CN104264255B - Waste water heat energy utilization method suitable for viscose staple fiber industry - Google Patents
Waste water heat energy utilization method suitable for viscose staple fiber industry Download PDFInfo
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- CN104264255B CN104264255B CN201410556295.0A CN201410556295A CN104264255B CN 104264255 B CN104264255 B CN 104264255B CN 201410556295 A CN201410556295 A CN 201410556295A CN 104264255 B CN104264255 B CN 104264255B
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- 238000000034 method Methods 0.000 title claims abstract description 246
- 239000000835 fiber Substances 0.000 title claims abstract description 56
- 229920000297 Rayon Polymers 0.000 title claims abstract description 45
- 239000002351 wastewater Substances 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 535
- 230000008569 process Effects 0.000 claims abstract description 199
- 239000013589 supplement Substances 0.000 claims abstract description 67
- 238000004519 manufacturing process Methods 0.000 claims abstract description 49
- 239000000498 cooling water Substances 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 17
- 230000023556 desulfurization Effects 0.000 claims abstract description 17
- 238000007380 fibre production Methods 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims description 45
- 238000009833 condensation Methods 0.000 claims description 44
- 230000005494 condensation Effects 0.000 claims description 44
- 239000008234 soft water Substances 0.000 claims description 43
- 238000002360 preparation method Methods 0.000 claims description 38
- 238000012856 packing Methods 0.000 claims description 34
- 238000004061 bleaching Methods 0.000 claims description 31
- 239000002253 acid Substances 0.000 claims description 29
- 239000010865 sewage Substances 0.000 claims description 29
- 239000002964 rayon Substances 0.000 claims description 28
- 239000006210 lotion Substances 0.000 claims description 23
- 238000007670 refining Methods 0.000 claims description 23
- 238000005201 scrubbing Methods 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 14
- 238000004064 recycling Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 6
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 238000009421 internal insulation Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 13
- 239000002918 waste heat Substances 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 8
- 238000011084 recovery Methods 0.000 abstract description 8
- 238000004065 wastewater treatment Methods 0.000 abstract description 4
- 238000004806 packaging method and process Methods 0.000 abstract 2
- 238000009991 scouring Methods 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 36
- 238000005406 washing Methods 0.000 description 25
- QGJOPFRUJISHPQ-UHFFFAOYSA-N carbon disulfide Substances S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 16
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 14
- 230000000694 effects Effects 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 9
- 239000003292 glue Substances 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000009413 insulation Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 230000001351 cycling effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229910052979 sodium sulfide Inorganic materials 0.000 description 3
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- 238000009892 machine bleaching Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D13/00—Complete machines for producing artificial threads
- D01D13/02—Elements of machines in combination
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The invention discloses a waste water heat energy utilization method suitable for viscose staple fiber industry, which comprises the treatment process of heat exchange and reutilization of waste hot water in the viscose staple fiber production, wherein the waste hot water comprises plasticizing tank overflow water, the treatment process comprises the step-by-step heat exchange of plasticizing tank supplement water, desulfurization liquid and packaging cooling water in sequence by using the plasticizing tank overflow water, the packaging cooling water is sent to a cutter after heat exchange, scouring water is obtained after the use of a refiner, and the scouring water is returned to the cutter or sent to a plasticizing tank supplement water tank to be used as the plasticizing tank supplement water. The invention can realize the comprehensive recovery and utilization of various waste hot water, can also carry out heat exchange treatment on specific media needing to be heated in the production of viscose staple fibers, fully utilizes the waste heat of the waste hot water, can promote the energy-saving and consumption-reducing work of enterprises on the premise of no flow loss on the basis of the existing process wastewater treatment, and has good social benefit and economic value.
Description
Technical field
The present invention is a kind of waste water heat energy utilization method being applicable to short rayon fiber industry, is specifically related to short rayon fiber and produces
During wastewater utilization flow process for the purpose of energy-saving and cost-reducing, belong to viscose staple fibre production field.
Background technology
" energy consumption " is the important indicator that current era evaluates an Enterprise Integrated competitiveness, and each enterprise is all " energy-conservation fall
Consumption " it is considered as the existence of oneself originally, from drop cost declining, with best management and technology, realize the maximization of energy-saving benefit.
As a example by viscose staple fibre produces, its production process has substantial amounts of spent hot water and discharges, if directly blowdown or simple heat exchange
Reclaim, will have substantial amounts of heat energy loss, be unfavorable for that enterprise reduces production cost.For existing short fiber production process, we know
Road, the spent hot water in short fine production process includes: packing cooling water, drying steam condensate (SC), acid station multiple-effect evaporation water, refine are given up
Water, plasticizing groove overflow water, CS2Six kinds of waste water such as pre-cold water produce, and these waste water have part to be simply back to produce, and have portion
Dividing then to be discharged and dispose, cause the waste of water resource, wherein, the reuse flow process of effluent part is as follows:
(1) packing cooling water, its reuse flow process is as it is shown in figure 1, packing cooling water is delivered to after indirectly cooling down hydraulic oil temperature again
Refine tank field is used as the washing of fiber, and this flow process is the conventional flow process in short fine production, has the disadvantages that packing coolant water temperature
Spend the lowest 30～40 DEG C, but refine washing process temperature is all at 50～70 DEG C, if packing cooling water is directly added into refine
Tank field certainly will affect washing water temperature for fiber wash, to ensure that it then will certainly be heated by wash temperature, continues
And cause waste of steam, improve production cost.
(2) drying condensation water, its reuse flow process as in figure 2 it is shown, dry after steam condensate (SC) first delivers to condensation water collection tank,
Delivering to refine tank field again and be used as the washing of fiber, this flow process has the disadvantage that drying steam condensate (SC) temperature is higher, generally
It is 85～95 DEG C, but refine washing process temperature is all at 50～70 DEG C, if drying steam condensate (SC) is directly added into fining pot
District certainly will make wash temperature higher for fiber wash, affects fiber quality, also improves employee's operating environment temperature, also makes simultaneously
Become the waste of heat energy, be unfavorable for that produce is smoothed out.
(3) acid station multiple-effect evaporation water, its reuse flow process is as it is shown on figure 3, acid station after multiple-effect evaporation water collected by collecting tank, is sent
To plastifying groove, supplement water as plasticizing groove and use, if patent documentation CN203295671U(mono-kind plasticizing groove is with supplementing water supply dress
Put, 2013.11.20) disclose a kind of reduction soft water (supplementing water) and the water supply installation of steam consumption, will add utilizing heater
After heat acid station multiple-effect water inject plasticizing groove after, can adapt to plasticizing groove technology controlling and process while, save fiber production cost and
Energy consumption, this flow process has the disadvantage that the parameters such as acid station multiple-effect evaporation coolant-temperature gage, acid concentration, flow are evaporated by acid station
The impact of technique has unstability, in actual production process, often has influence on the technology controlling and process of plasticizing groove, and the moment needs
Employee pays close attention to adjustment, adds control difficulty, and labor intensity is big.
(4) refining wastewater, as shown in Figure 4, refining wastewater delivers to heat exchanger to its reuse flow process, for the chemical industry during producing
Pharmaceutical preheats, the refining wastewater after heat exchange be used as again cut-out rush hair water (by cutting machine cut off chopped fiber rushed by pipeline
Water to lower operation (giving fine groove) is referred to as rushing hair water), this flow process has the disadvantage that refining wastewater total amount is relatively big, usually
150～200m3/ h, rushes the consumption of hair water, it is impossible to making full use of, redundance is directly drained, and causes much larger than heat exchange and cut-out
The waste of resource and loss.
(5) plasticizing groove overflow water, its reuse flow process is as it is shown in figure 5, soft water is carried out by plasticizing groove overflow water by heat exchanger
Preheating, to obtain hot soft water required in production process, this flow process has the disadvantage that the plasticizing groove overflow water after heat exchange also
Having certain temperature, heat energy is not fully utilized, and is emitted in sewage disposal by the plasticizing groove overflow water after heat exchange, also can make
Become environmental protection pressure, improve production cost.
In viscose glue production field, existing method of wastewater treatment includes: the acid waste water produced viscose glue in industry enters
The process of row, this processing scheme can remove zinc, sulfide and solid suspension in waste water effectively, makes up to discharge mark
Standard, such as patent documentation CN1792858(process for treating acidic waste water of viscose fibre industry, 2006.06.28)；Viscose glue is produced work
Waste water in industry carries out integrated treatment, has considered the salkali waste during viscose rayon produces, the governing problem of zinc-containing water, had both reached
To the comprehensive utilization of resource, reduce again waste discharge, in producing such as patent documentation CN101343124(comprehensive control viscose rayon
The method and apparatus of waste water and gas, 2009.01.14), at patent documentation CN103864260A(wastewater from viscose fiber producing
Reason method, 2014.06.18), patent documentation CN102351379A (a kind of viscose fiber waste water treatment method, 2012.02.15)
Deng.Knowable to the content of above-mentioned patent documentation, in existing method of wastewater treatment, not do not carry out waste water residual heat reclaiming and
Recycling, is performing while above-mentioned waste water processing scheme, waste water with waste heat be not the most efficiently utilized, for
This, the present invention arises at the historic moment.
Summary of the invention
It is an object of the invention to provide a kind of waste water heat energy utilization method being applicable to short rayon fiber industry, this method gram
Take and existing short fine produced present in waste heat heat exchange process that heat exchange process is short, layout is single, residue heat energy is underused
Defect, realizes its heat energy by the specific medium of stage-by-stage heat exchange (such as: plasticizing groove supplements water, doctor solution and packing cooling water)
Make full use of, on the basis of can processing based on existing technique waste water, carry out on the premise of without flow loss, promotion enterprise
Energy-saving and cost-reducing work, practical effect is good.
The present invention is achieved through the following technical solutions: a kind of waste water heat energy utilization method being applicable to short rayon fiber industry,
This method overcomes and existing short fine produces present in waste heat heat exchange process that heat exchange process is short, layout is single, residue heat energy does not fills
Dividing the defects such as utilization, the need in making heat energy medium (spent hot water) produce system step by step add thermal medium and carry out step heat exchange, make heat
Can obtain fully absorbing utilization, this method includes spent hot water in short rayon fiber production is carried out the process of heat exchange and recycling
Journey, described spent hot water includes plastifying groove overflow water, in actual mechanical process, it is known that plasticizing groove overflow water is mainly
By plasticizing groove acid bath overflow, its temperature is higher, if only just discharging after simple heat exchange processes, its heat does not then have
It is fully utilized, easily causes the waste of the energy, to this end, described processing procedure includes using plasticizing groove overflow water the most right
Plasticizing groove supplements water, doctor solution and packing cooling water and carries out stage-by-stage heat exchange, and described packing cooling water is delivered to cut after heat exchange
Cutter machine, then obtain after being used by refiner and rush hair water, the described mao water that rushes is back to cutter machine or delivers to plastify groove and supplement water pot
Being used as plasticizing groove and supplement water use, in the present invention, the heat energy of plasticizing groove overflow water can not only be carried out by stage-by-stage heat exchange by step
Utilize, in addition to plasticizing groove being supplemented water, doctor solution and packing cooling water and heats, saved the consumption of steam, same with this
Time, rush hair water and also can recycle, such as, be back to cutter machine and be used as to grip water use or deliver to plastify groove to supplement water pot use
Make plasticizing groove and supplement water use, when actually used, rush hair water and taken up by rushing a mao water pot, permit depending on actual process condition,
Rushing hair water and also can carry out above-mentioned recycling simultaneously, practicality is extremely strong.
For preferably realizing the stage-by-stage heat exchange of plasticizing groove overflow water, described processing procedure comprises the steps:
A: arrange first-class heat exchanger, supplements water deliver to carry out in first-class heat exchanger by plasticizing groove overflow water and plasticizing groove respectively
Heat exchange process, heat exchange process after, it is thus achieved that plasticizing groove supplement hot water deliver to plastify groove, this step overcome in prior art use
Plasticizing groove is supplemented the mode of operation that water heats by steam, it is to avoid the consumption of steam, saves the energy, and heat exchange obtains after processing
Plasticizing groove overflow water at low temperature then deliver to secondary heat exchanger, complete the operation of step B；
B: deliver in secondary heat exchanger by the doctor solution that desulfurization station uses, utilizes the plasticizing groove overflow obtained in step A low
Warm water carries out heat exchange process to it, and in short fine industry, doctor solution liquid is to be exclusively used in the elemental sulfur removed on fiber, and heat exchange processes
After, the temperature of doctor solution raises, and is applicable to desulfurization station temperature and controls the technological requirement at 55～68 DEG C, it is not necessary to re-uses steam
To doctor solution heating and thermal insulation, after heat exchange processes, desulfurization station delivered to by doctor solution, and plasticizing groove overflow water at low temperature then delivers to three grades of heat exchange
Device, completes the operation of step C；
C: packing cooling water is delivered in three grades of heat exchangers, utilizes the plasticizing groove overflow water at low temperature pair after heat exchange in step B
It carries out heat exchange process, after heat exchange processes, it is thus achieved that acid overflow water, delivers to sewage plant, and packing cooling water then delivers to cutter machine, complete
Becoming the operation of step D, the packing cooling water delivering to cutter machine can be used as gripping water use, and described gripping water is for being viscose glue reaction
The long fibre of rear generation cuts into water during chopped fiber, and this water has at certain pressure, when practical operation, cutting machine used
Being flow type cutting machine, strand, when entrance enters cutting machine, is that exceptionally straight straight line enters cut-out to be ensured of strand
Machine, i.e. can use gripping water (0.5Mpa pressure) by strand toward cutting machine to carry (punching)
D: after described packing cooling water is delivered to refiner use by cutter machine, it is thus achieved that rushing hair water, the described mao water that rushes returns
Be back to cutter machine or deliver to plastify groove supplement water pot be used as plasticizing groove supplement water use, the described mao water that rushes is in refiner,
The chopped fiber water cut off by cutter machine is flushed to lower operation (to fine groove) by pipeline and obtains, and rushing hair water has higher temperature,
Its temperature is the highest, is more beneficial to the evacuation of fiber in refiner, in this step, rush hair water recyclable enter rush hair water pot in repeat
Utilize, as be back to cutter machine be used as grip water use or deliver to plastify groove supplement water pot be used as plasticizing groove supplement water use.
In the production process of short rayon fiber, it is usually 60m from the flow of plasticizing groove plasticizing groove overflow water out3/ h,
And at first-class heat exchanger, the water yield of the plasticizing groove overflow water needed for plasticizing groove is supplemented water heat exchange is less than again above-mentioned flow, because of
This, for avoiding plastifying the waste of groove overflow water, the present invention is communicated with collecting tank on described plasticizing groove, and in this collecting tank
Portion's isolation arranges two subregions, and described subregion is respectively to be collected the high-temperature region of plasticizing groove overflow water and collects through first-class heat exchanger
The low-temperature space of the plasticizing groove overflow water at low temperature after heat exchange, in actual use, first plasticizing groove overflow water overflows from plasticizing groove
Flowing in the high-temperature region of collecting tank, be then sent to first-class heat exchanger and supplement plasticizing groove water and carry out heat exchange, obtain after heat exchange moulds
Changing in the low-temperature space that groove overflow water at low temperature then delivers to collecting tank, high-temperature region and low-temperature space are isolated by overflow plate respectively, when
When the flow of plasticizing groove overflow water is excessive, plasticizing groove overflow water unnecessary in high-temperature region directly can overflow to low temperature by overflow plate
District, is re-fed into secondary heat exchanger, and overflow plate can be avoided plastifying the mixing between groove overflow water and plasticizing groove overflow water at low temperature, prevents
Both cause the reduction of part heat transfer effect because of mixing, and during use, overflow plate also can realize the mutual of high-temperature region and low-temperature space
Switching, in being effective to ensure that collecting tank, thermal medium is not drained rapidly, and practical effect is good.
In the production of short rayon fiber, the multiple-effect water at acid station can be used as plastifying groove and supplements water use, to this end, the present invention is in institute
The plasticizing groove stated supplements and is also associated with multiple-effect water pot on water pot, and described multiple-effect water pot is the collecting tank taking up acid station multiple-effect water.
The present invention is reasonable in design, utilizes the need in short fine production to add the temperature difference of thermal medium, it is carried out step arrangement,
Then by plasticizing groove overflow water (thermal medium), it being carried out stage-by-stage heat exchange, its heat-exchanging process flow process is as follows: in described step
In rapid A, before first-class heat exchanger heat exchange processes, the temperature of described plasticizing groove overflow water is 90～95 DEG C, described plasticizing groove
The temperature supplementing water is 60～65 DEG C, and after first-class heat exchanger heat exchange processes, the temperature of plasticizing groove overflow water at low temperature is 75～80
DEG C, it is 75～80 DEG C that plasticizing groove supplements the temperature of hot water；
In described step B, before secondary heat exchanger heat exchange processes, the temperature of described doctor solution is 55～60 DEG C,
After secondary heat exchanger heat exchange processes, the temperature of doctor solution is 65～70 DEG C, and the temperature of plasticizing groove overflow water at low temperature is 70～80
℃；
In described step C, before three grades of heat exchanger heat exchange processors, the temperature of described packing cooling water be 10～
20 DEG C, after three grades of heat exchanger heat exchange processors, the temperature of packing cooling water is 45～50 DEG C, and the temperature of acid overflow water is 50
～60 DEG C.
At the production field of short rayon fiber, described spent hot water also includes refine sewer and refine overflow hot water, wherein,
Refine sewer is to the sewer after fiber wash, after viscose glue generates fiber by chemical reaction, with more above fiber
Impurity (elemental sulfur etc.), and these impurity need the water by uniform temperature or medicinal liquid solution carry out washing could remove；Refine
Overflow hot water be by the water wash zone of refiner to fiber dimension carry out then flowing in a collecting tank after stream is washed, carry out recycling and
Obtaining, described refiner is a washing facility: it includes water wash zone, desulfurization zone (sodium sulfide body lotion), bleaching district (hydrogen peroxide
Body lotion), a Ge Gong17Ge district such as the district that oils (oil preparation bath), in the present invention, described heat exchange processes and also comprises the steps:
A: refined water heat exchanger and refining heat water-to-water heat exchanger are set, respectively refine sewer and production soft water are delivered to refine
Water-to-water heat exchanger carries out heat exchange process, and after heat exchange processes, refine sewer delivers to sewage plant, and production soft water is then delivered to refine hot water and changed
Hot device, completes the operation of step b；
B: deliver in refining heat water-to-water heat exchanger by refine overflow hot water, changes the production soft water after heat exchange in step a
Heat treatment, heat exchange process after, it is thus achieved that production soft water send into system soft water, refine overflow hot water then delivers to sewage plant, above-mentioned
During heat exchange processes, refined water heat exchanger and refining heat water-to-water heat exchanger are serially connected, and carry out heat exchange, refine blowdown with producing soft water
The heat energy of water and refine overflow hot water delivers to sewage plant again after being utilized effectively, both not only can be utilized to greatest extent to give up
The heat energy of hot water, moreover it is possible to the effective use temperature producing soft water that improves, production soft water temperature rises fast, more decreases meanwhile
The steam usage amount of post-order process, energy-saving and emission-reduction.
In described step a, refined water-to-water heat exchanger heat exchange process before, the temperature of described refine sewer be 55～
60 DEG C, the described temperature producing soft water is 10～20 DEG C, after refined water-to-water heat exchanger heat exchange processes, and the temperature of refine sewer
Being 35～40 DEG C, without value, therefore deliver to sewage plant, the temperature producing soft water is 30～35 DEG C；
In described step b, before refined hot water heat exchanger heat exchange processes, the temperature of described refine overflow hot water is
55～60 DEG C, after refined hot water heat exchanger heat exchange processes, the temperature of refine overflow hot water is 35～40 DEG C, without exploitation value
Value, therefore delivers to sewage plant, and the temperature producing soft water is 35～40 DEG C.
At the production field of short rayon fiber, described spent hot water also includes pre-cold water, and this pre-cold water is that Carbon bisulfide reclaims
Cooling water, Carbon bisulfide recovery process is: be evaporated by the Carbon bisulfide in tow (evaporating temperature 95～98 with steam
DEG C), then sent into condenser by closed conduit, owing to the condensation temperature of Carbon bisulfide is 46.5 DEG C, so need to be in condenser
Water filling, makes Carbon bisulfide and water vapour thereof condense out, reclaims, and the cooling water that this condenses out is pre-cold water, at this
In invention, described heat exchange processes and also includes: arranges pre-cold-water heat exchanger, delivers to pre-by pre-cold water and refiner bleaching liquid respectively
Cold-water heat exchanger carries out heat exchange process, and after heat exchange processes, pre-cold water delivers to refiner scrubbing section, and essence then delivered to by refiner bleaching liquid
Refining machine bleaching district, above-mentioned heat exchange processes the heat energy more than needed that reasonably make use of pre-cold water, both heated refiner bleaching liquid and (has saved
Use steam) meet again washing process requirement, by short rayon fiber production technology it is known that refiner bleaching liquid can be selected for double
Oxygen water, has the effect of bleaching, and newly-generated fiber is only inadequate by sodium sulfide glue sulfur, therefore, for meeting fibre whiteness
Requirement, i.e. uses hydrogen peroxide to bleach fiber.
Before pre-cooled water-to-water heat exchanger processes, the temperature of described pre-cold water is 80～85 DEG C, described refiner bleaching liquid
Temperature be 50～55 DEG C, pre-cooled water-to-water heat exchanger process after, the temperature of pre-cold water is 65～70 DEG C, and its water temperature meets washing work
Skill requirement, therefore refiner scrubbing section will be put into after its heat exchange, the temperature of refiner bleaching liquid is 56～60 DEG C.
At the production field of short rayon fiber, described spent hot water also includes drying condensation water, this drying condensation water mainly by
Fiber dehumidifying is produced by dehydrator, and therefore, in the present invention, described heat exchange processes and also includes: arrange condensed water heat exchanger,
After drying condensation water is delivered to oil preparation chuck, then deliver to condensed water heat exchanger, the oil preparation body lotion delivering to condensed water heat exchanger is entered
Row heat exchange processes, and after heat exchange processes, drying condensation water delivers to refiner scrubbing section, and system petrol station then delivered to by oil preparation body lotion, above-mentioned
Heat exchange processes and reasonably make use of drying condensation Shuifu County waste heat energy, is not only incubated oil preparation, and heated oil preparation body lotion, (saving makes
With steam) while, also meet the requirement of refiner washing process, when actually used, drying condensation water first passes through oil
Agent chuck is for the insulation of refine oil preparation, and its technological requirement temperature is 60～65 DEG C, by the drying condensation water after oil preparation chuck
Temperature is maintained at more than 75 DEG C, delivers to condensed water heat exchanger the most again and carries out heat exchange with oil preparation body lotion, operates the simplest.Viscous
In the short fine production of glue, the effect of oil preparation body lotion is to be lubricated fiber, it is to avoid fiber produces electrostatic, and fiber is tied a knot, and is conducive to
The use of downstream client.
Before condensed water-to-water heat exchanger processes, the temperature of described drying condensation water is 85～90 DEG C, described oil preparation body lotion
Temperature be 50～53 DEG C, condensed water-to-water heat exchanger process after, the temperature of drying condensation water is 65～75 DEG C, meet refine washing
Technological requirement, therefore put into refiner scrubbing section, the temperature of oil preparation body lotion is 60～65 DEG C.
In the technological process of above-mentioned spent hot water, the conveying of each medium (such as: drying condensation water, pre-cold water etc.) both from
The pressure of pump, certainly, it is possible to actual according to equipment arranges position, liquid level difference carry, in the production of short rayon fiber
Cheng Zhong, owing to the yield of each hot and cold medium is different with consumption, enters at the front/rear tank body that also can arrange that it carries out heat exchange process
Row is collected, and has the effect of buffering.In each heat exchange processing procedure, the heat transmission equipment related to such as: first-class heat exchanger, secondary heat exchange
Device, pre-cold-water heat exchanger etc., can use the mode of separate unit or multiple stage series/parallel to be configured, mainly changing according to heat transmission equipment
Hot side is long-pending and determines, if the heat exchange area of heat transmission equipment is relatively big, can use separate unit heat transmission equipment, if heat exchange area is less, and efficiency
Relatively low, then can use multiple stage heat transmission equipment mode in parallel or series, when actually used, above-mentioned heat transmission equipment can be selected for board-like changing
Hot device, pipe heat exchanger, all kinds of heat exchangers such as finned.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) heat energy comprehensive cyclic utilization method involved in the present invention be according to short rayon fiber produce in, various spent hot waters
(such as: plasticizing groove condensed water, refine sewer, refine overflow hot water, drying condensation water, pre-cold water) heat content and purposes are not
With, it is respectively adopted different recovery process, realizes during short rayon fiber produces, specifically adding the heat exchange process that thermal medium is carried out,
Sufficiently make use of the waste heat of spent hot water, on the basis of can processing based on existing technique waste water, on the premise of without flow loss
Carry out, promote the energy-saving and cost-reducing work of enterprise, there is good social benefit and economic worth.
(2) heat energy that the present invention relates to plastify groove overflow water is recycled technology, by plasticizing groove overflow water step by step
The processing mode of heat exchange realizes making full use of of heat energy, adds including thermoplastification groove supplements water, doctor solution and gripping water
Heat, compensate for existing plasticizing groove overflow water waste heat and energy waste that water resource fails to be fully recycled and causes,
There is good economic worth.
(3) present invention can realize rushing the recycling of hair water, rushes the hair water pot mao water that liquidates reclaim, then by arranging
Delivering to cutter machine, continuing to be fed into refiner as gripping water and carry out the cut-out of fiber, when actually used, due to cutter machine also
Having the addition that the cooling water of packing after heat exchange is lasting, therefore, also have more than needed for rushing the water of hair, the present invention drains into dirt outside changing
The mode of water station, premised on saving water resource, by rush in hair water pot rush mao water after filtering deliver to plastify groove supplement water pot,
Being used as plasticizing groove and supplement water use, practicality is extremely strong.
(4) present invention is by arranging multiple-effect water pot, through multiple-effect water pot, the multiple-effect water at acid station can be delivered to plastify groove and supplement water
Tank is used as plasticizing groove and supplements water use, has not only saved the consumption of water resource, simultaneously, it is thus also avoided that answer multiple-effect water to be directly discharged to
Sewage plant and the environmental protection pressure that causes, advantageously reduce the production cost of enterprise, great social benefit.
(5) present configuration is simple, is collected from plasticizing groove plasticizing groove overflow water collecting tank out, inside it by
Overflow plate subregion forms high-temperature region and low-temperature space, and when actually used, overflow plate can avoid plastifying groove overflow water and plasticizing groove overflows
Mixing between stream water at low temperature, prevents both from causing the reduction of part heat transfer effect because of mixing, and Practical Performance is good.
(6) present invention is reasonable in design, and in producing for convenience of short rayon fiber, each hot and cold medium carries out at heat exchange smoothly
Reason, the forward and backward tank body that also can arrange at each heat transmission equipment is collected respectively, has the effect of buffering.
(7) the present invention relates to the heat energy of refine sewer and refine overflow hot water be recycled technology, use series connection to change
Its heat energy is processed by the mode of heat, and the heat energy at refine sewer and refine overflow hot water obtains profit effectively (to greatest extent)
While with, moreover it is possible to improve the firing rate producing soft water temperature, refine sewer after heat exchange and refine overflow hot water through changing
After heat, temperature is 35～45 DEG C, without value, can be immediately discharged to sewage plant and process.
(8) the present invention relates to the heat energy of pre-cold water be recycled technology, the heat more than needed of pre-cold water is fully utilized in adding
The refiner bleaching liquid (such as: hydrogen peroxide) that fiber is bleached by heat, saves and refiner bleaching liquid is heated required steaming
Vapour, pre-cold water is after heat exchange processes, and its temperature can reach between 65～70 DEG C, meets the washing process requirement of refiner, therefore,
Pre-cold water after heat exchange is sent to refiner scrubbing section, meets energy-saving and cost-reducing production theory.
(9) the invention still further relates to the heat energy of drying condensation water be recycled technology, during this reuse, oil can be realized
The insulation of agent, heating oil preparation body lotion, the drying condensation water after heat exchange also meets aqueous technological requirement simultaneously, can be fed directly to be
System washing erect-position also puts into production, and operates the simplest.
Accompanying drawing explanation
Fig. 1 is the reuse FB(flow block) of packing cooling water in prior art.
Fig. 2 is the reuse FB(flow block) of drying condensation water in prior art.
Fig. 3 is the reuse FB(flow block) of acid station multiple-effect evaporation water in prior art.
Fig. 4 is the reuse FB(flow block) of refining wastewater in prior art.
Fig. 5 is the reuse FB(flow block) plastifying groove overflow water in prior art.
Fig. 6 is the process flow block diagram of plasticizing groove overflow water of the present invention.
Fig. 7 is the process flow block diagram of refining wastewater of the present invention.
Fig. 8 is pre-cold water of the present invention and the process flow block diagram of drying condensation water.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1:
The present invention relates to a kind of waste water heat energy utilization method being applicable to short rayon fiber industry, this technique includes viscose glue short
In fine production, spent hot water carries out the processing procedure of heat exchange and recycling, and wherein, spent hot water includes plastifying groove overflow water, in existing skill
In art, the waste heat of plasticizing groove overflow water generally uses heat exchange process as shown in Figure 5 to process, from plasticizing groove plasticizing out
Groove overflow water, temperature is 90～95 DEG C, and after simple heat exchange, plasticizing groove overflow water also leaves waste heat, and temperature is 70～80 DEG C, i.e.
Being disposed to sewage plant process, its heat energy is not fully utilized, to this end, the present embodiment uses following heat exchange stream
Journey, it may be assumed that plasticizing groove overflow water is carried out step heat exchange, use plasticizing groove overflow water successively plasticizing groove is supplemented water, doctor solution with
And packing cooling water carries out stage-by-stage heat exchange, the heat energy of plasticizing groove overflow water is utilized, in this place in reason flow process,
Packing cooling water delivers to cutter machine after heat exchange, then obtains after being used by refiner and rush hair water, and the described mao water that rushes is back to cut
Cutter machine or deliver to plastify groove supplement water pot be used as plasticizing groove supplement water use.
Embodiment 2:
The present embodiment is with the difference of embodiment 1: in the present embodiment, and it is right that the stage-by-stage heat exchange of plasticizing groove overflow water includes
Plasticizing groove supplements water, doctor solution and grips the stage-by-stage heat exchange of water, and it is as follows that it processes step:
A: arrange first-class heat exchanger, supplements water deliver to carry out in first-class heat exchanger by plasticizing groove overflow water and plasticizing groove respectively
Heat exchange process, heat exchange process after, it is thus achieved that plasticizing groove supplement hot water deliver to plastify groove, it is thus achieved that plasticizing groove overflow water at low temperature then give
To secondary heat exchanger, complete the operation of step B；
B: deliver in secondary heat exchanger by the doctor solution that desulfurization station uses, utilizes the plasticizing groove overflow obtained in step A low
Warm water carries out heat exchange process to it, and after heat exchange processes, desulfurization station delivered to by doctor solution, and plasticizing groove overflow water at low temperature is then delivered to three grades and changed
Hot device, completes the operation of step C；
C: packing cooling water is delivered in three grades of heat exchangers, utilizes the plasticizing groove overflow water at low temperature pair after heat exchange in step B
It carries out heat exchange process, after heat exchange processes, it is thus achieved that acid overflow water, delivers to sewage plant, and packing cooling water then delivers to cutter machine, complete
Become the operation of step D；
D: after described packing cooling water is delivered to refiner use by cutter machine, it is thus achieved that rushing hair water, the described mao water that rushes returns
Be back to cutter machine or deliver to plastify groove supplement water pot be used as plasticizing groove supplement water use.
Embodiment 3:
The present embodiment is with the difference of embodiment 1: in the present embodiment, and it is right that the stage-by-stage heat exchange of plasticizing groove overflow water includes
Plasticizing groove supplements water, sodium sulfide body lotion and grips the stage-by-stage heat exchange of water, meanwhile, is communicated with collecting tank, in it on plasticizing groove
Portion is arranged to two subregions, respectively high-temperature region and low-temperature space by overflow plate isolation.
The process step of the plasticizing groove overflow water that the present embodiment relates to includes:
(1) the plasticizing groove overflow water overflow in plasticizing groove is to the high-temperature region of collecting tank, the temperature of described plasticizing groove overflow water
It it is 95 DEG C；
(2) respectively plasticizing groove overflow water and plasticizing groove that temperature is 65 DEG C that temperature in high-temperature region is 95 DEG C are supplemented water and send
Heat exchange process is carried out, after heat exchange processes, it is thus achieved that temperature is that the plasticizing groove of 80 DEG C supplements hot water and delivers to plasticizing to first-class heat exchanger
Groove, it is thus achieved that temperature is that the groove overflow water at low temperature that plastifies of 85 DEG C then delivers to the low-temperature space of collecting tank；
(3) by plasticizing groove overflow water at low temperature that temperature in low-temperature space is 85 DEG C and the doctor solution at desulfurization station that temperature is 60 DEG C
Delivering to carry out in secondary heat exchanger heat exchange process, after heat exchange processes, the temperature of doctor solution is 70 DEG C, delivers to desulfurization station, plastifies groove
The temperature of overflow water at low temperature is 80 DEG C, standby；
(4) plasticizing groove overflow water at low temperature and the packing that temperature is 20 DEG C that the temperature that above-mentioned steps obtains is 80 DEG C are cooled down
Water delivers to carry out in three grades of heat exchangers heat exchange process, after heat exchange processes, it is thus achieved that temperature is the acid overflow water of 60 DEG C, delivers to sewage
Stand, it is thus achieved that the gripping water that temperature is 50 DEG C then deliver to cutter machine be used as grip water use.
(5) obtain packing cooling water through above-mentioned steps to be delivered to refiner by cutter machine and be used as to grip after water uses, it is thus achieved that punching
Mao Shui, and arrange and rush hair water pot and reclaim, this punching hair water may return to cutter machine and recycles or deliver to plastify groove and supplement water
Tank is used as plasticizing groove and supplements water use.
Embodiment 4:
The present embodiment is with the difference of embodiment 3: in addition to the recycling of plasticizing groove overflow water, the present embodiment further relates to
Refine sewer and the energy recovery of refine overflow hot water.
Refine sewer and the process step of refine overflow hot water that the present embodiment relates to include:
(1) refined water heat exchanger and refining heat water-to-water heat exchanger be set, respectively by refine sewer that temperature is 55～60 DEG C
Deliver to refined water heat exchanger with the production soft water that temperature is 20 DEG C and carry out heat exchange process, after heat exchange processes, the temperature of refine sewer
Degree is 40 DEG C, and this temperature, without value, can be fed directly to sewage plant, and after production soft water heat exchange, temperature is then 35 DEG C；
(2) production soft water and the refine overflow hot water that temperature is 60 DEG C that the temperature that above-mentioned steps obtains is 35 DEG C are delivered to
Refining heat water-to-water heat exchanger carries out heat exchange process, after heat exchange processes, it is thus achieved that the temperature producing soft water be 40 DEG C, meet washing work
Skill requirement, sends into system soft water and puts into production, and the temperature of refine overflow hot water is down to, and delivers to 40 DEG C, without value, and can
It is fed directly to sewage plant process.
Embodiment 5:
The present embodiment is with the difference of embodiment 3: in addition to the recycling of plasticizing groove overflow water, the present embodiment further relates to
The energy recovery of pre-cold water.
The process step of the pre-cold water that the present embodiment relates to includes: arrange pre-cold-water heat exchanger, is 85 DEG C by temperature respectively
Pre-cold water and refiner bleaching liquid that temperature is 55 DEG C deliver to pre-cold-water heat exchanger and carry out heat exchange process, after heat exchange processes, in advance
The temperature of cold water is 70 DEG C, can deliver to refiner scrubbing section, and the temperature of refiner bleaching liquid is 60 DEG C, can deliver to refiner bleaching
District, in the present embodiment, refiner bleaching liquid can be selected for hydrogen peroxide.
Embodiment 6:
The present embodiment is with the difference of embodiment 3: in addition to the heat energy of plasticizing groove overflow water is recycled, the present embodiment
Further relate to the energy recovery of drying condensation water.
The process step of the pre-cold water that the present embodiment relates to includes: arrange condensed water heat exchanger, by the baking that temperature is 90 DEG C
Dry condensed water is delivered to oil preparation chuck and is incubated for refine oil preparation, is remained at by the temperature of the drying condensation water after oil preparation chuck
More than 75 DEG C, and deliver to condensed water heat exchanger, the oil preparation body lotion that temperature is 53 DEG C delivering to condensed water heat exchanger is carried out heat exchange
Processing, after heat exchange processes, the temperature of drying condensation water is down to 75 DEG C, meets refine washing technological requirement, therefore is put into washing
Erect-position, i.e. delivers to refiner scrubbing section, and the temperature of oil preparation body lotion is 65 DEG C, and delivers to system petrol station.
Embodiment 7:
The spent hot water that the present embodiment relates to include plastify groove condensed water, refine sewer, refine overflow hot water, pre-cold water,
Drying condensation water, its heat energy handling process is as follows:
The handling process of plasticizing groove condensed water as shown in Figure 6, including three grades of heat exchange and the cycling and reutilization that rushes hair water, its
In, one-level heat exchange process includes: the high-temperature region of the plasticizing groove overflow water first overflow in plasticizing groove to collecting tank, this plasticizing groove overflows
The temperature of flowing water is 90 DEG C, and flow is 50m3/h；Use delivery pump respectively by plasticizing groove overflow that temperature in high-temperature region is 90 DEG C
Water and the plasticizing groove that temperature is 60 DEG C supplement water and deliver to carry out in first-class heat exchanger heat exchange process, supplement water for adapting to plasticizing groove
Heat exchange efficiency, plasticizing groove supplements the flow of water should meet 50m3/ h, after heat exchange processes, it is thus achieved that temperature is that the plasticizing groove of 75 DEG C supplements
Hot water deliver to plastify groove, it is thus achieved that temperature be 75 DEG C plasticizing groove overflow water at low temperature again by delivery pump with 50m3The flow of/h is delivered to receive
The low-temperature space of collection groove；Secondary heat exchange includes: by plasticizing groove overflow water at low temperature and temperature that temperature in above-mentioned low-temperature space is 75 DEG C be
The doctor solution at the desulfurization station of 55 DEG C delivers to carry out in secondary heat exchanger heat exchange process, and for meeting heat exchange efficiency, doctor solution should be with
50m3The flow of/h delivers to secondary heat exchanger, and after heat exchange processes, the temperature of doctor solution is 65 DEG C, delivers to desulfurization station, and plasticizing groove overflows
The temperature of stream water at low temperature is 70 DEG C, and flow is 50m3/h；Three grades of heat exchange include: be 70 DEG C mould by the temperature that above-mentioned steps obtains
Change groove overflow water at low temperature with 50m3The flow of/h and temperature are 10 DEG C, flow is 20m3The packing cooling water of/h delivers to three grades of heat exchange
Device carries out heat exchange process, after heat exchange processes, it is thus achieved that temperature is the acid overflow water of 50 DEG C, with 50m3The flow of/h delivers to sewage
Stand, it is thus achieved that the gripping water that temperature is 45 DEG C then with 20m3The flow of/h is delivered to cutter machine and is used as to grip water use.In the present invention
In, packing cooling water is delivered to after refiner uses, to obtain and rush hair water, and rush hair water pot and reclaim, reclaim by cutter machine
Obtain rush mao water may return to cutter machine continue to serve as grip water recycle, or, can deliver to plastify groove supplement water pot use
Make plasticizing groove and supplement water use, when actually used, for reducing the environmental protection pressure that sewage plant is caused by acid station multiple-effect water, also can set
Put multiple-effect water pot, by tank collect acid station multiple-effect water deliver to plastify groove supplement water pot be used as plasticizing groove supplement water use, also have
There is saving water resource consumption, reduce the advantage of enterprise's production cost.
Data in above-mentioned flow process are added up, as shown in table 1:
Table 1
The heat energy handling process of refine sewer and refine overflow hot water is as it is shown in fig. 7, refine sewer and refine overflow
The most refined water-to-water heat exchanger of hot water and refining heat water-to-water heat exchanger carry out heat exchange, refined water heat exchanger and refining heat water-to-water heat exchanger phase
Mutually series connection, its heat transfer process is as follows: temperature is the refine sewer of 55 DEG C and the production soft water that temperature is 10 DEG C is sent to refine
Water-to-water heat exchanger carries out heat exchange process, and after heat exchange processes, the temperature of refine sewer is 35 DEG C, and this temperature, can without value
Being fed directly to sewage plant, after production soft water heat exchange, temperature is then 30 DEG C；It is 55 by the production soft water after above-mentioned heat exchange and temperature
DEG C refine overflow hot water deliver to refining heat water-to-water heat exchanger is carried out heat exchange process, after heat exchange processes, it is thus achieved that produce soft water
Temperature is 35 DEG C, meets washing process requirement, sends into system soft water and puts into production, and the temperature of refine overflow hot water is down to, and delivers to
35 DEG C, without value, sewage plant can be fed directly to and process.
Data in above-mentioned flow process are added up, as shown in table 2:
Table 2
As shown in Figure 8, the process step of the pre-cold water that the present embodiment relates to includes the heat energy handling process of pre-cold water: utilize
Pre-cold-water heat exchanger to temperature is the pre-cold water of 80 DEG C respectively and the refiner bleaching liquid that temperature is 50 DEG C carries out heat exchange process, changes
After heat treatment, the temperature of pre-cold water is 65 DEG C, can deliver to refiner scrubbing section, and the temperature of refiner bleaching liquid is 56 DEG C, can send
Bleaching district to refiner, in the present embodiment, refiner bleaching liquid can be selected for hydrogen peroxide.
Data in above-mentioned flow process are added up, as shown in table 3:
Table 3
The heat energy handling process of drying condensation water as shown in Figure 8, the process step of the drying condensation water that the present embodiment relates to
Including: first, the drying condensation water that temperature is 85 DEG C is delivered to oil preparation chuck and is used for the insulation of refine oil preparation, after oil preparation chuck
The temperature of drying condensation water remain at more than 75 DEG C, and deliver to condensed water heat exchanger, to the temperature delivering to condensed water heat exchanger
Degree is that the oil preparation body lotion of 50 DEG C carries out heat exchange process, and after heat exchange processes, the temperature of drying condensation water is down to 65 DEG C, meets refined water
Washing technological requirement, therefore put into washing erect-position, deliver to refiner scrubbing section, the temperature of oil preparation body lotion is 60 DEG C, and deliver to be
System petrol station.
Data in above-mentioned flow process are added up, as shown in table 4:
Table 4
Embodiment 8:
The spent hot water that the present embodiment relates to include plastify groove condensed water, refine sewer, refine overflow hot water, pre-cold water,
Drying condensation water, its heat energy handling process is as follows:
The heat energy handling process of plasticizing groove condensed water as shown in Figure 6, including three grades of heat exchange and the cycling and reutilization that rushes hair water,
Wherein, one-level heat exchange process includes: the high-temperature region of the plasticizing groove overflow water first overflow in plasticizing groove to collecting tank, this plasticizing groove
The temperature of overflow water is 92 DEG C, and flow is 60m3/h；Delivery pump is used to be overflow by the plasticizing groove that temperature in high-temperature region is 92 DEG C respectively
Flowing water and the plasticizing groove that temperature is 62 DEG C supplement water and deliver to carry out in first-class heat exchanger heat exchange process, supplement water for adapting to plasticizing groove
Heat exchange efficiency, plasticizing groove supplements the flow of water and should meet 60m3/ h, after heat exchange processes, it is thus achieved that temperature is that the plasticizing groove of 77 DEG C is mended
Fill hot water deliver to plastify groove, it is thus achieved that temperature be 80 DEG C plasticizing groove overflow water at low temperature again by delivery pump with 60m3The flow of/h is delivered to
The low-temperature space of collecting tank；Secondary heat exchange includes: by plasticizing groove overflow water at low temperature that temperature in above-mentioned low-temperature space is 80 DEG C and temperature
Being that the doctor solution at the desulfurization station of 57 DEG C delivers to carry out in secondary heat exchanger heat exchange process, for meeting heat exchange efficiency, doctor solution should be with
60m3The flow of/h delivers to secondary heat exchanger, and after heat exchange processes, the temperature of doctor solution is 67 DEG C, delivers to desulfurization station, and plasticizing groove overflows
The temperature of stream water at low temperature is 75 DEG C, and flow is 60m3/h；Three grades of heat exchange include: be 75 DEG C mould by the temperature that above-mentioned steps obtains
Change groove overflow water at low temperature with 60m3The flow of/h and temperature are 15 DEG C, flow is 30m3The gripping water of/h is delivered in three grades of heat exchangers
Carry out heat exchange process, after heat exchange processes, it is thus achieved that temperature is the acid overflow water of 55 DEG C, with 60m3The flow of/h delivers to sewage plant,
The gripping water that temperature is 47 DEG C obtained is then with 30m3The flow of/h is delivered to cutter machine and is used as to grip water use.In the present invention,
Packing cooling water is delivered to after refiner uses, to obtain and rush hair water, and rush hair water pot and reclaim by cutter machine, and recovery obtains
Rush mao water may return to cutter machine continue to serve as grip water recycle, or, can deliver to plastify groove supplement water pot be used as mould
Change groove and supplement water use, when actually used, for reducing the environmental protection pressure that sewage plant is caused by acid station multiple-effect water, also can arrange many
Effect water pot, by tank collect acid station multiple-effect water deliver to plastify groove supplement water pot be used as plasticizing groove supplement water use, also there is joint
About water resources consumption, reduces the advantage of enterprise's production cost.
Data in above-mentioned flow process are added up, as shown in table 5:
Table 5
The heat energy handling process of refine sewer and refine overflow hot water is as it is shown in fig. 7, refine sewer and refine overflow
The most refined water-to-water heat exchanger of hot water and refining heat water-to-water heat exchanger carry out heat exchange, refined water heat exchanger and refining heat water-to-water heat exchanger phase
Mutually series connection, its heat transfer process is as follows: temperature is the refine sewer of 57 DEG C and the production soft water that temperature is 15 DEG C is sent to refine
Water-to-water heat exchanger carries out heat exchange process, and after heat exchange processes, the temperature of refine sewer is 34 DEG C, and this temperature, can without value
Being fed directly to sewage plant, after production soft water heat exchange, temperature is then 32 DEG C；It is 57 by the production soft water after above-mentioned heat exchange and temperature
DEG C refine overflow hot water deliver to refining heat water-to-water heat exchanger is carried out heat exchange process, after heat exchange processes, it is thus achieved that produce soft water
Temperature is 36 DEG C, meets washing process requirement, sends into system soft water and puts into production, and the temperature of refine overflow hot water is down to, and delivers to
38 DEG C, without value, sewage plant can be fed directly to and process.
Data in above-mentioned flow process are added up, as shown in table 6:
Table 6
As shown in Figure 8, the process step of the pre-cold water that the present embodiment relates to includes the heat energy handling process of pre-cold water: utilize
Pre-cold-water heat exchanger to temperature is the pre-cold water of 82 DEG C respectively and the refiner bleaching liquid that temperature is 52 DEG C carries out heat exchange process, changes
After heat treatment, the temperature of pre-cold water is 67 DEG C, can deliver to refiner scrubbing section, and the temperature of refiner bleaching liquid is 58 DEG C, can send
Bleaching district to refiner, in the present embodiment, refiner bleaching liquid can be selected for hydrogen peroxide.
Data in above-mentioned flow process are added up, as shown in table 7:
Table 7
The heat energy handling process of drying condensation water as shown in Figure 8, the process step of the drying condensation water that the present embodiment relates to
Including: first, the drying condensation water that temperature is 87 DEG C is delivered to oil preparation chuck and is used for the insulation of refine oil preparation, after oil preparation chuck
The temperature of drying condensation water remain at more than 75 DEG C, and deliver to condensed water heat exchanger, to the temperature delivering to condensed water heat exchanger
Degree is that the oil preparation body lotion of 51 DEG C carries out heat exchange process, and after heat exchange processes, the temperature of drying condensation water is down to 70 DEG C, meets refined water
Washing technological requirement, therefore put into washing erect-position, deliver to refiner scrubbing section, the temperature of oil preparation body lotion is 62 DEG C, and deliver to be
System petrol station.
Data in above-mentioned flow process are added up, as shown in table 8:
Table 8
Embodiment 9:
The spent hot water that the present embodiment relates to include plastify groove condensed water, refine sewer, refine overflow hot water, pre-cold water,
Drying condensation water, its heat energy handling process is as follows:
The heat energy handling process of plasticizing groove condensed water as shown in Figure 6, including three grades of heat exchange and the cycling and reutilization that rushes hair water,
Wherein, one-level heat exchange process includes: the high-temperature region of the plasticizing groove overflow water first overflow in plasticizing groove to collecting tank, this plasticizing groove
The temperature of overflow water is 93 DEG C, and flow is 55m3/h；Delivery pump is used to be overflow by the plasticizing groove that temperature in high-temperature region is 93 DEG C respectively
Flowing water and the plasticizing groove that temperature is 64 DEG C supplement water and deliver to carry out in first-class heat exchanger heat exchange process, supplement water for adapting to plasticizing groove
Heat exchange efficiency, plasticizing groove supplements the flow of water and should meet 55m3/ h, after heat exchange processes, it is thus achieved that temperature is that the plasticizing groove of 78 DEG C is mended
Fill hot water deliver to plastify groove, it is thus achieved that temperature be 82 DEG C plasticizing groove overflow water at low temperature again by delivery pump with 55m3The flow of/h is delivered to
The low-temperature space of collecting tank；Secondary heat exchange includes: by plasticizing groove overflow water at low temperature that temperature in above-mentioned low-temperature space is 82 DEG C and temperature
Being that the doctor solution at the desulfurization station of 58 DEG C delivers to carry out in secondary heat exchanger heat exchange process, for meeting heat exchange efficiency, doctor solution should be with
55m3The flow of/h delivers to secondary heat exchanger, and after heat exchange processes, the temperature of doctor solution is 69 DEG C, delivers to desulfurization station, and plasticizing groove overflows
The temperature of stream water at low temperature is 78 DEG C, and flow is 55m3/h；Three grades of heat exchange include: be 78 DEG C mould by the temperature that above-mentioned steps obtains
Change groove overflow water at low temperature with 55m3The flow of/h and temperature are 18 DEG C, flow is 25m3The gripping water of/h is delivered in three grades of heat exchangers
Carry out heat exchange process, after heat exchange processes, it is thus achieved that temperature is the acid overflow water of 58 DEG C, with 55m3The flow of/h delivers to sewage plant,
The gripping water that temperature is 48 DEG C obtained is then with 25m3The flow of/h is delivered to cutter machine and is used as to grip water use.In the present invention,
Packing cooling water is delivered to after refiner uses, to obtain and rush hair water, and rush hair water pot and reclaim by cutter machine, and recovery obtains
Rush mao water may return to cutter machine continue to serve as grip water recycle, or, can deliver to plastify groove supplement water pot be used as mould
Change groove and supplement water use, when actually used, for reducing the environmental protection pressure that sewage plant is caused by acid station multiple-effect water, also can arrange many
Effect water pot, by tank collect acid station multiple-effect water deliver to plastify groove supplement water pot be used as plasticizing groove supplement water use, also there is joint
About water resources consumption, reduces the advantage of enterprise's production cost.
Data in above-mentioned flow process are added up, as shown in table 9:
Table 9
The heat energy handling process of refine sewer and refine overflow hot water is as it is shown in fig. 7, refine sewer and refine overflow
The most refined water-to-water heat exchanger of hot water and refining heat water-to-water heat exchanger carry out heat exchange, refined water heat exchanger and refining heat water-to-water heat exchanger phase
Mutually series connection, its heat transfer process is as follows: temperature is the refine sewer of 58 DEG C and the production soft water that temperature is 18 DEG C is sent to refine
Water-to-water heat exchanger carries out heat exchange process, and after heat exchange processes, the temperature of refine sewer is 38 DEG C, and this temperature, can without value
Being fed directly to sewage plant, after production soft water heat exchange, temperature is then 34 DEG C；It is 58 by the production soft water after above-mentioned heat exchange and temperature
DEG C refine overflow hot water deliver to refining heat water-to-water heat exchanger is carried out heat exchange process, after heat exchange processes, it is thus achieved that produce soft water
Temperature is 37 DEG C, meets washing process requirement, sends into system soft water and puts into production, and the temperature of refine overflow hot water is down to, and delivers to
38 DEG C, without value, sewage plant can be fed directly to and process.
Data in above-mentioned flow process are added up, as shown in table 10:
Table 10
As shown in Figure 8, the process step of the pre-cold water that the present embodiment relates to includes the heat energy handling process of pre-cold water: utilize
Pre-cold-water heat exchanger to temperature is the pre-cold water of 84 DEG C respectively and the refiner bleaching liquid that temperature is 54 DEG C carries out heat exchange process, changes
After heat treatment, the temperature of pre-cold water is 68 DEG C, can deliver to refiner scrubbing section, and the temperature of refiner bleaching liquid is 59 DEG C, can send
Bleaching district to refiner, in the present embodiment, refiner bleaching liquid can be selected for hydrogen peroxide.
Data in above-mentioned flow process are added up, as shown in table 11:
Table 11
The heat energy handling process of drying condensation water as shown in Figure 8, the process step of the drying condensation water that the present embodiment relates to
Including: first, the drying condensation water that temperature is 88 DEG C is delivered to oil preparation chuck and is used for the insulation of refine oil preparation, after oil preparation chuck
The temperature of drying condensation water remain at more than 75 DEG C, and deliver to condensed water heat exchanger, to the temperature delivering to condensed water heat exchanger
Degree is that the oil preparation body lotion of 52 DEG C carries out heat exchange process, and after heat exchange processes, the temperature of drying condensation water is down to 69 DEG C, meets refined water
Washing technological requirement, therefore put into washing erect-position, deliver to refiner scrubbing section, the temperature of oil preparation body lotion is 64 DEG C, and deliver to be
System petrol station.
Data in above-mentioned flow process are added up, as shown in table 12:
Table 12
The above, be only presently preferred embodiments of the present invention, and the present invention not does any pro forma restriction, every depends on
Any simple modification of being made above example according to the technical spirit of the present invention, equivalent variations, each fall within the protection of the present invention
Within the scope of.
Claims (10)
1. being applicable to a waste water heat energy utilization method for short rayon fiber industry, this method includes used heat in short rayon fiber production
Water carries out the processing procedure of heat exchange and recycling, and described spent hot water includes plastifying groove overflow water, and described processing procedure includes
Using plasticizing groove overflow water that plasticizing groove supplements water, doctor solution and packing cooling water successively and carry out stage-by-stage heat exchange, described beats
Bag cooling water delivers to cutter machine after heat exchange, then obtains after being used by refiner and rush hair water, and the described mao water that rushes is back to cutting knife
Machine or deliver to plastify groove supplement water pot be used as plasticizing groove supplement water use,
Described processing procedure comprises the steps:
A: arrange first-class heat exchanger, supplements water deliver to carry out in first-class heat exchanger heat exchange by plasticizing groove overflow water and plasticizing groove respectively
Process, heat exchange process after, it is thus achieved that plasticizing groove supplement hot water deliver to plastify groove, it is thus achieved that plasticizing groove overflow water at low temperature then deliver to two
Level heat exchanger, completes the operation of step B；
B: deliver in secondary heat exchanger by the doctor solution that desulfurization station uses, utilizes the plasticizing groove overflow water at low temperature obtained in step A
It is carried out heat exchange process, and after heat exchange processes, desulfurization station delivered to by doctor solution, and plasticizing groove overflow water at low temperature then delivers to three grades of heat exchange
Device, completes the operation of step C；
C: packing cooling water is delivered in three grades of heat exchangers, utilizes in step B the plasticizing groove overflow water at low temperature after heat exchange that it is entered
Row heat exchange processes, after heat exchange processes, it is thus achieved that acid overflow water, delivers to sewage plant, and packing cooling water is then delivered to cutter machine, completed step
The operation of rapid D；
D: after described packing cooling water is delivered to refiner use by cutter machine, it is thus achieved that rushing hair water, the described mao water that rushes is back to
Cutter machine or deliver to plastify groove supplement water pot be used as plasticizing groove supplement water use.
A kind of waste water heat energy utilization method being applicable to short rayon fiber industry the most according to claim 1, it is characterised in that:
Being communicated with collecting tank on described plasticizing groove, and arrange two subregions in this collecting tank internal insulation, described subregion is respectively
For collecting the high-temperature region of plasticizing groove overflow water and collecting the low-temperature space of the plasticizing groove overflow water at low temperature after first-class heat exchanger heat exchange.
A kind of waste water heat energy utilization method being applicable to short rayon fiber industry the most according to claim 1, it is characterised in that:
Supplementing at described plasticizing groove and be also associated with multiple-effect water pot on water pot, described multiple-effect water pot is the collection taking up acid station multiple-effect water
Tank.
A kind of waste water heat energy utilization method being applicable to short rayon fiber industry the most according to claim 1, it is characterised in that:
In described step A, before first-class heat exchanger heat exchange processes, the temperature of described plasticizing groove overflow water is 90～95 DEG C, institute
It is 60～65 DEG C that the plasticizing groove stated supplements the temperature of water, after first-class heat exchanger heat exchange processes, and the temperature of plasticizing groove overflow water at low temperature
Degree is 75～80 DEG C, and it is 75～80 DEG C that plasticizing groove supplements the temperature of hot water；
In described step B, before secondary heat exchanger heat exchange processes, the temperature of described doctor solution is 55～60 DEG C, through two
After level heat exchanger heat exchange processes, the temperature of doctor solution is 65～70 DEG C, and the temperature of plasticizing groove overflow water at low temperature is 70～80 DEG C；
In described step C, before three grades of heat exchanger heat exchange processors, the temperature of described packing cooling water is 10～20
DEG C, after three grades of heat exchanger heat exchange processors, the temperature of packing cooling water is 45～50 DEG C, the temperature of acid overflow water be 50～
60℃。
5. according to a kind of waste water heat energy utilization method being applicable to short rayon fiber industry described in any one of Claims 1 to 4, its
It is characterised by: described spent hot water also includes refine sewer and refine overflow hot water, and described heat exchange process also includes as follows
Step:
A: refined water heat exchanger and refining heat water-to-water heat exchanger are set, respectively refine sewer and production soft water are delivered to refined water and changed
Hot device carries out heat exchange process, and after heat exchange processes, refine sewer delivers to sewage plant, produces soft water and then delivers to refine hot water heat exchange
Device, completes the operation of step b；
B: deliver in refining heat water-to-water heat exchanger by refine overflow hot water, is carried out at heat exchange the production soft water after heat exchange in step a
Reason, heat exchange process after, it is thus achieved that production soft water send into system soft water, refine overflow hot water then delivers to sewage plant.
A kind of waste water heat energy utilization method being applicable to short rayon fiber industry the most according to claim 5, it is characterised in that:
In described step a, before refined water-to-water heat exchanger heat exchange processes, the temperature of described refine sewer is 55～60 DEG C, institute
State produce soft water temperature be 10～20 DEG C, refined water-to-water heat exchanger heat exchange process after, the temperature of refine sewer be 35～
40 DEG C, the temperature producing soft water is 30～35 DEG C；
In described step b, refined hot water heat exchanger heat exchange process before, the temperature of described refine overflow hot water be 55～
60 DEG C, after refined hot water heat exchanger heat exchange processes, the temperature of refine overflow hot water is 35～40 DEG C, and the temperature producing soft water is
35～40 DEG C.
7. according to a kind of waste water heat energy utilization method being applicable to short rayon fiber industry described in any one of Claims 1 to 4, its
It is characterised by: described spent hot water also includes that pre-cold water, described heat exchange process and also includes: arrange pre-cold-water heat exchanger, respectively
Pre-cold water and refiner bleaching liquid being delivered to pre-cold-water heat exchanger and carries out heat exchange process, after heat exchange processes, pre-cold water delivers to refine
Machine scrubbing section, refiner bleaching district then delivered to by refiner bleaching liquid.
A kind of waste water heat energy utilization method being applicable to short rayon fiber industry the most according to claim 7, it is characterised in that:
Before pre-cooled water-to-water heat exchanger processes, the temperature of described pre-cold water is 80～85 DEG C, and the temperature of described refiner bleaching liquid is
50～55 DEG C, pre-cooled water-to-water heat exchanger process after, the temperature of pre-cold water is 65～70 DEG C, the temperature of refiner bleaching liquid be 56～
60℃。
9. according to a kind of waste water heat energy utilization method being applicable to short rayon fiber industry described in any one of Claims 1 to 4, its
It is characterised by: described spent hot water also includes that drying condensation water, described heat exchange process and also includes: arrange condensed water heat exchanger,
After drying condensation water is delivered to oil preparation chuck, then deliver to condensed water heat exchanger, the oil preparation body lotion delivering to condensed water heat exchanger is entered
Row heat exchange processes, and after heat exchange processes, drying condensation water delivers to refiner scrubbing section, and system petrol station then delivered to by oil preparation body lotion.
A kind of waste water heat energy utilization method being applicable to short rayon fiber industry the most according to claim 9, its feature exists
In: before condensed water-to-water heat exchanger processes, the temperature of described drying condensation water is 85～90 DEG C, the temperature of described oil preparation body lotion
Being 50～53 DEG C, after condensed water-to-water heat exchanger processes, the temperature of drying condensation water is 65～75 DEG C, and the temperature of oil preparation body lotion is 60
～65 DEG C.
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| CN105420830A (en) * | 2015-12-11 | 2016-03-23 | 宜宾丝丽雅股份有限公司 | Spinning wash bowl waste water utilization system |
| CN107383209B (en) * | 2017-08-30 | 2023-07-25 | 宜宾丝丽雅集团有限公司 | Water circulation equipment for ageing procedure in viscose fiber production |
| CN108150998A (en) * | 2017-12-22 | 2018-06-12 | 芜湖德司节能科技有限公司 | A kind of boiler blowdown water heat energy utilization method |
| CN109457313A (en) * | 2018-11-14 | 2019-03-12 | 全球能源互联网研究院有限公司 | The recyclable device and method of steam are overflowed in a kind of polyacrylonitrile fibril preparation |
| CN110885084A (en) * | 2019-12-11 | 2020-03-17 | 宜宾丝丽雅股份有限公司 | Condensation recycling method and system for carbon disulfide in viscose fiber production |
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