CN110093464A - A kind of blast furnace slag flushing residual heat heating and steam disappear white system and method - Google Patents
A kind of blast furnace slag flushing residual heat heating and steam disappear white system and method Download PDFInfo
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- CN110093464A CN110093464A CN201910303588.0A CN201910303588A CN110093464A CN 110093464 A CN110093464 A CN 110093464A CN 201910303588 A CN201910303588 A CN 201910303588A CN 110093464 A CN110093464 A CN 110093464A
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- water
- steam
- flushing cinder
- flushing
- hot
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
- F28C1/16—Arrangements for preventing condensation, precipitation or mist formation, outside the cooler
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
- F28F25/08—Splashing boards or grids, e.g. for converting liquid sprays into liquid films; Elements or beds for increasing the area of the contact surface
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention proposes that a kind of blast furnace slag flushing residual heat heating and steam disappear white system and method, the system includes that disappear white integration unit, flushing cinder pond, induced cooling tower, washing slag water of hot-blast stove, flushing cinder mouth, steam takes hot systems and hot-blast stove chimney, and the steam white integration unit that disappears includes exhaust fan, mixed zone, demister, spraying layer, packing layer and collecting-tank；Washing slag water in flushing cinder pond is first delivered to washing slag water and takes hot systems, exchanges heat with heating circulation water, effectively recycles low grade residual heat resource；The washing slag water low temperature exhaust heat heating of present invention recycling 30%, solves the problems, such as plant area and neighbouring resident's winter heating；Steam of flushing cinder is condensed using water spray system, hot-blast stove fume and uncooled steam of flushing cinder is recycled to be mixed to form unsaturated flue gas, white plume is eliminated, solves environmental issue；Using the condensed water of generation as the moisturizing in flushing cinder pond, system water consumption is also reduced.
Description
[technical field]
The present invention relates to the technical field of the coloured plume purification of industry, especially a kind of blast furnace slag flushing residual heat heating and steam
Disappear white system and method.
[background technique]
In recent years, have more than 20 provinces and cities and area is put into effect coloured plume improvement and required, current coloured plume Treatment process road
Line mainly has condensation, heating, three kinds of reheating of condensation, and fluoroplastics, titanium tube, 2205 etc., condensing mode can be selected in heat exchange equipment material
Optional water spray, phase transformation knockouts, slurries condensation etc..In the high temperature furnace slag that metallurgy industry, blast furnace generate, water is used substantially
The mode of quenching is cooled down, and washing slag water can generate a large amount of water vapour when contacting high temperature sludge.In the process, about 40% high temperature sludge
Heat is pulled away in the form of steam of flushing cinder, and about 80 DEG C of temperature.Serious heat waste is not only caused, a large amount of white cigarettes are also generated,
Thermal pollution and visual pollution are caused, corporate image is influenced.Meanwhile containing a large amount of H in blast furnace slag flushing steam2S、SO2, the row such as slag wool
Object is put, serious corrosion and corrosion are caused to blast furnace main equipment and auxiliary device.Although metallurgy industry pollutant is arranged in recent years
It puts requirement to be increasingly stringenter, but white cigarette is eliminated by existing equipment and is difficult to accomplish.
Currently, most blast furnace slag flushing mouths do not set the white equipment that disappears.It is influenced by communication front-end equipment and operation process, one
A little common white process equipments that take off can not be suitable for the coloured plume improvement of flushing cinder mouth, therefore is badly in need of a kind of new white system that disappears, with
Meet the improvement demand of blast furnace slag flushing mouth, especially in the area of water resources shortage, solves insufficient water sources, water supply difficulty etc. and ask
Topic is realized and is saved water.
[summary of the invention]
The object of the invention is to solve the problems of the prior art, propose that a kind of blast furnace slag flushing residual heat heating and steam disappear
White system and method can make full use of washing slag water low grade residual heat, and can substantially reduce system water consumption.
To achieve the above object, disappear white system, including heat the invention proposes a kind of blast furnace slag flushing residual heat heating and steam
Disappear white integration unit, flushing cinder pond, induced cooling tower, washing slag water of wind furnace, flushing cinder mouth, steam takes hot systems and hot-blast stove cigarette
Chimney, the steam white integration unit that disappears includes exhaust fan, mixed zone, demister, spraying layer, packing layer and collecting-tank；
The steam of flushing cinder outlet of the flushing cinder mouth is connected with the steam white integration unit that disappears, from the steam of flushing cinder of flushing cinder mouth out
Disappear white integration unit into steam, demister is entered after spraying layer spraying cooling and removes water mist, enters back into mixed zone, and comes from
The hot-blast stove fume of hot-blast stove mixes, and forms unsaturated flue gas, is discharged into atmosphere through exhaust fan after；
The water outlet of the induced cooling tower is connected with spraying layer, steam disappear white integration unit spraying layer by machine power
Aerating and cooling tower supplies water, and the condensed water of shower water and generation converges at collecting-tank, the water outlet of the collecting-tank respectively with flushing cinder
Pond, induced cooling tower are connected, and the water in collecting-tank returns to induced cooling tower and is recycled, and partially convey through shunting
To flushing cinder pond；
The flushing cinder water out in the flushing cinder pond takes hot systems to be connected with washing slag water, and the washing slag water takes the water outlet of hot systems
Mouth is connected with flushing cinder mouth, and the washing slag water in flushing cinder pond is first delivered to washing slag water and takes hot systems, exchanges heat with heating circulation water
Afterwards, flushing cinder mouth is continued on to, the flushing cinder water out of the flushing cinder mouth is connected with flushing cinder pond, the slag-water slurry in flushing cinder mouth
It is delivered to the recycling of flushing cinder pond.Washing slag water takes hot systems to heat using exhaust heat of slag flushing water, effectively recycles low-grade remaining
Thermal resource.
It has been sequentially arranged exhaust fan, mixed zone, demisting from top to bottom in white integration unit preferably, the steam disappears
Mixed gas in mixed zone is arranged Xiang great Qi by device, spraying layer, packing layer and collecting-tank, the exhaust fan.
Preferably, the collecting-tank is provided with pH meter and liquidometer.
Preferably, described filler layer is ceramic material, the steam of flushing cinder and shower water countercurrently passed through is inscribed in packing layer
Touching heat exchange.
Preferably, the number of plies of the spraying layer is 2 layers or more, interlamellar spacing is 3~3.5m.
Preferably, the demister is 2 layers or more ridge type demisters, interlamellar spacing is not less than 1.5m.
Preferably, the mixed zone and hot-blast stove smoke discharging pipe bypass connect, by spraying layer discharge steam of flushing cinder with
The uniform mixing of hot fume.
A kind of blast furnace slag flushing residual heat heating and steam disappear white method, specifically includes the following steps:
S1. enter steam from the steam of flushing cinder that flushing cinder mouth is discharged to disappear white integration unit, be sprayed by spraying layer；
S2. the flue gas after spraying layer spraying cooling enters demister removing droplet, enters back into mixed zone；
S3. in mixed zone, uncooled steam of flushing cinder is mixed with the hot fume from hot-blast stove, is formed unsaturated
Flue gas is finally discharged by exhaust fan；
S4. remaining flue gas of the hot-blast stove is by hot-blast stove smoke stack emission；
S5. the disappear spraying layer of white integration unit of the steam is supplied water by induced cooling tower, the condensed water convergence of generation
In the collecting-tank；
S6. the water in the collecting-tank returns to induced cooling tower and is recycled, and is partially delivered to washing slag water through shunting
Pond, as washing slag water moisturizing；
S7. the washing slag water in the flushing cinder pond is first delivered to washing slag water and takes hot systems, exchanges heat with heating circulation water；
S8. flushing cinder mouth is continued on to from the washing slag water that the washing slag water takes hot systems to be discharged carry out water quenching flushing cinder；
S9. the slag-water slurry being discharged from the flushing cinder mouth is delivered to the recycling of flushing cinder pond.
Beneficial effects of the present invention: blast furnace slag flushing residual heat heating and steam provided by the invention disappear white system and method, will
The high temperature steam of flushing cinder that flushing cinder mouth comes out carries out spray process, and vapor (steam) temperature is reduced to 50 DEG C, a large amount of condensed waters, and depth is precipitated
Blast furnace slag flushing steam is purified, the discharge amount of the pollutants such as hydrogen sulfide, sulfur dioxide is reduced；Shower water and condensation are collected by collecting-tank
Water is recycled into induced cooling tower, flushing cinder pond is partially delivered to, as washing slag water moisturizing；Utilize flushing cinder hydro-thermal
Amount is heating system heat supply, takes full advantage of washing slag water low grade residual heat；Uncooled flushing cinder is mixed using hot-blast stove fume to steam
Vapour forms unsaturated flue gas, avoids the energy consumption of flue gas reheat process.The design and optimization of system, both can be in flue gas condensing
Large quantity of moisture is recycled in the process, substantially reduces system water consumption, while washing slag water low temperature is made full use of during flue gas reheat
Waste heat realizes that economically viable water quenching flush slag treatment process eliminates the white plume circulatory system, solves environmental issue.
Feature and advantage of the invention will be described in detail by embodiment combination attached drawing.
[Detailed description of the invention]
Fig. 1 is that blast furnace slag flushing residual heat heating and steam of the present invention disappear the structural schematic diagram of white system；
In figure: 1- hot-blast stove, 2- flushing cinder mouth, 3- steam disappear white integration unit, 3.1- exhaust fan, the mixed zone 3.2-, 3.3-
Demister, 3.4- spraying layer, 3.5- packing layer, 3.6- collecting-tank, 4- flushing cinder pond, 5- induced cooling tower, 6- washing slag water
Take hot systems, 7- hot-blast stove chimney.
[specific embodiment]
The white system as shown in Figure 1, blast furnace slag flushing residual heat heating of the present invention and steam disappear, including sequentially connected hot-blast stove 1,
Disappear white integration unit 3, flushing cinder pond 4, induced cooling tower 5, washing slag water of flushing cinder mouth 2, steam takes hot systems 6 and hot-blast stove cigarette
Chimney 7.The steam disappear white integration unit 3 include exhaust fan 3.1, mixed zone 3.2, demister 3.3, spraying layer 3.4, packing layer
3.5 and collecting-tank 3.6.
Wherein, pH meter and liquidometer is arranged in collecting-tank 3.6；
Wherein, packing layer 3.5 is ceramic material；
Wherein, spraying layer 3.4 is 2 layers of spray, interlamellar spacing 3.5m, nozzle interlaced arrangement；
Wherein, demister 3.3 is 2 layers of ridge type demister, interlamellar spacing 2m；
Wherein, mixed zone 3.2 is void tower arrangement, inside only sets hot wind nozzle.
A kind of blast furnace slag flushing residual heat heating and steam disappear white method, comprising the following steps:
1) about 100 DEG C of washing slag water come out from flushing cinder mouth 2, are delivered to flushing cinder pond 4 by pulp water conveyance conduit, while defeated
Blast furnace slag after cooling is sent, prevents from blocking；
2) the steam condensed water generated in white integration unit 3 that disappears is about 40~50 DEG C, converges in collecting-tank 3.6, returns
Induced cooling tower 5 is recycled, and part shunts and is delivered to flushing cinder pond 4；
3) 80~100 DEG C of washing slag water come out from flushing cinder pond 4, take hot systems 6 into washing slag water, exchange heat with heat user
After cool down, 60~65 DEG C of washing slag water after cooling, be delivered to flushing cinder mouth 2 carry out water quenching flushing cinder；
4) enter heating water supply about 80 DEG C, about 60 DEG C of heating return water that washing slag water takes hot systems 6, after heating hot pipe network
It recycles；
5) about 100 DEG C of steam of flushing cinder temperature come out from flushing cinder mouth 2 disappear white integration unit 3 into steam, lead to from bottom to top
Packing layer 3.5, spraying layer 3.4, demister 3.3 are crossed, by induced cooling tower 5 for water spray, 30~32 DEG C of water temperature, makes flushing cinder
Vapor (steam) temperature is greatly reduced to 40~50 DEG C, and a large amount of condensed waters are precipitated；
6) it continues through steam from the condensed steam of flushing cinder of demister 3.3 to disappear the mixed zone 3.2 of white integration unit 3, punching
Slag steam is mixed with the hot fume from hot-blast stove 1 is warming up to 60~65 DEG C, forms unsaturated flue gas, and pass through exhaust fan
3.1 are discharged into atmosphere, and realization disappears white；
7) remaining flue gas of hot-blast stove is discharged into atmosphere through hot-blast stove chimney 7.
Above-described embodiment is the description of the invention, is not limitation of the invention, after any pair of simple transformation of the present invention
Scheme all belong to the scope of protection of the present invention.
Claims (8)
- The white system 1. a kind of blast furnace slag flushing residual heat heating and steam disappear, it is characterised in that: including hot-blast stove (1), flushing cinder mouth (2), Disappear white integration unit (3), flushing cinder pond (4), induced cooling tower (5), washing slag water of steam takes hot systems (6) and hot-blast stove cigarette Chimney (7), the steam white integration unit (3) that disappears includes exhaust fan (3.1), mixed zone (3.2), demister (3.3), spraying layer (3.4), packing layer (3.5) and collecting-tank (3.6)；The steam of flushing cinder outlet of the flushing cinder mouth (2) is connected with the steam white integration unit (3) that disappears, from flushing cinder mouth (2) rushing out Slag steam enters steam and disappears white integration unit (3), and demister (3.3) are entered after spraying layer (3.4) spraying cooling and remove water mist, Mixed zone (3.2) are entered back into, are mixed with the hot-blast stove fume from hot-blast stove (1), unsaturated flue gas are formed, through exhaust fan after (3.1) it is discharged into atmosphere；The water outlet of the induced cooling tower (5) is connected with spraying layer (3.4), and steam disappears the sprays of white integration unit (3) Layer (3.4) is supplied water by induced cooling tower (5), and the condensed water of shower water and generation converges at collecting-tank (3.6), described to catchment The water outlet in pond (3.6) is connected with flushing cinder pond (4), induced cooling tower (5) respectively, and the water in collecting-tank (3.6) returns Induced cooling tower (5) is recycled, and is partially delivered to flushing cinder pond (4) through shunting；The flushing cinder water out of the flushing cinder pond (4) takes hot systems (6) to be connected with washing slag water, and the washing slag water takes hot systems (6) Water outlet be connected with flushing cinder mouth (2), the washing slag water in flushing cinder pond (4) is first delivered to washing slag water and takes hot systems (6), with heating It after recirculated water is exchanged heat, continues on to flushing cinder mouth (2), flushing cinder water out and flushing cinder pond (4) phase of the flushing cinder mouth (2) Even, the slag-water slurry in flushing cinder mouth (2) is delivered to flushing cinder pond (4) recycling.
- The white system 2. a kind of blast furnace slag flushing residual heat heating as described in claim 1 and steam disappear, it is characterised in that: the steam The white integration unit (3) that disappears is interior to be sequentially arranged exhaust fan (3.1), mixed zone (3.2), demister (3.3), spraying layer from top to bottom (3.4), packing layer (3.5) and collecting-tank (3.6), the exhaust fan (3.1) arrange the mixed gas in mixed zone (3.2) to big Gas.
- The white system 3. a kind of blast furnace slag flushing residual heat heating as claimed in claim 1 or 2 and steam disappear, it is characterised in that: described Collecting-tank (3.6) is provided with pH meter and liquidometer.
- The white system 4. a kind of blast furnace slag flushing residual heat heating as claimed in claim 1 or 2 and steam disappear, it is characterised in that: described Packing layer (3.5) is ceramic material, and the steam of flushing cinder and shower water countercurrently passed through is in packing layer (3.5) interior contact heat-exchanging.
- The white system 5. a kind of blast furnace slag flushing residual heat heating as claimed in claim 1 or 2 and steam disappear, it is characterised in that: described The number of plies of spraying layer (3.4) is 2 layers or more, and interlamellar spacing is 3~3.5m.
- The white system 6. a kind of blast furnace slag flushing residual heat heating as claimed in claim 1 or 2 and steam disappear, it is characterised in that: described Demister (3.3) is 2 layers or more ridge type demisters, and interlamellar spacing is not less than 1.5m.
- The white system 7. a kind of blast furnace slag flushing residual heat heating as claimed in claim 1 or 2 and steam disappear, it is characterised in that: described Mixed zone (3.2) and the bypass connection of hot-blast stove (1) smoke discharging pipe, the steam of flushing cinder that spraying layer (3.4) are discharged and hot fume Uniformly mixing.
- A kind of white method 8. blast furnace slag flushing residual heat heating and steam disappear, it is characterised in that: specifically includes the following steps:S1. enter steam from the steam of flushing cinder that flushing cinder mouth (2) are discharged to disappear white integration unit (3), be sprayed by spraying layer (3.4) Leaching；S2. the flue gas after spraying layer (3.4) spraying cooling enters demister (3.3) removing droplet, enters back into mixed zone (3.2)；S3. in mixed zone (3.2), uncooled steam of flushing cinder is mixed with the hot fume from hot-blast stove (1), is formed not Saturated flue gas is finally discharged by exhaust fan (3.1)；S4. described remaining flue gas of hot-blast stove (1) is discharged by hot-blast stove chimney (7)；S5. the steam disappear white integration unit (3) spraying layer (3.4) by induced cooling tower (5) supply water, the condensation of generation Water converges at the collecting-tank (3.6)；S6. the water in the collecting-tank (3.6) returns to induced cooling tower (5) and is recycled, and is partially delivered to punching through shunting Pulp water pond (4), as washing slag water moisturizing；S7. the washing slag water in the flushing cinder pond (4) is first delivered to washing slag water and takes hot systems (6), is changed with heating circulation water Heat；S8. flushing cinder mouth (2) are continued on to from the washing slag water that the washing slag water takes hot systems (6) to be discharged and carries out water quenching flushing cinder；S9. the slag-water slurry being discharged from the flushing cinder mouth (2) is delivered to flushing cinder pond (4) recycling.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910303588.0A CN110093464A (en) | 2019-04-16 | 2019-04-16 | A kind of blast furnace slag flushing residual heat heating and steam disappear white system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910303588.0A CN110093464A (en) | 2019-04-16 | 2019-04-16 | A kind of blast furnace slag flushing residual heat heating and steam disappear white system and method |
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| CN201910303588.0A Pending CN110093464A (en) | 2019-04-16 | 2019-04-16 | A kind of blast furnace slag flushing residual heat heating and steam disappear white system and method |
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Cited By (2)
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| CN110975496A (en) * | 2019-12-25 | 2020-04-10 | 中冶京诚工程技术有限公司 | Environment-friendly white-removing system for blast furnace granulated slag |
| CN114849269A (en) * | 2020-11-18 | 2022-08-05 | 福建立宜信科技股份有限公司 | Combined fog dispersal device and method with good water collection effect |
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| CN110975496B (en) * | 2019-12-25 | 2024-02-02 | 中冶京诚工程技术有限公司 | Environment-friendly white removing system for granulated slag of blast furnace |
| CN114849269A (en) * | 2020-11-18 | 2022-08-05 | 福建立宜信科技股份有限公司 | Combined fog dispersal device and method with good water collection effect |
| CN114849269B (en) * | 2020-11-18 | 2024-04-12 | 福建立宜信科技股份有限公司 | Combined defogging device and method with good water collecting effect |
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Inventor after: Wang Gan Inventor after: Zhou Yuefeng Inventor after: Feng Guohua Inventor after: Du Yiqian Inventor after: Chen Tiejiong Inventor after: Wu Shendong Inventor before: Wang Gan Inventor before: Zhou Yuefeng Inventor before: Feng Guohua Inventor before: Du Yiqian Inventor before: Chen Tiejiong Inventor before: Wu Shendong |
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Application publication date: 20190806 |