CN108392938A - A kind of intaglio printing VOCs Processing tecchnics and its equipment - Google Patents
A kind of intaglio printing VOCs Processing tecchnics and its equipment Download PDFInfo
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- CN108392938A CN108392938A CN201810445868.0A CN201810445868A CN108392938A CN 108392938 A CN108392938 A CN 108392938A CN 201810445868 A CN201810445868 A CN 201810445868A CN 108392938 A CN108392938 A CN 108392938A
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- case
- tail gas
- box
- catalysis oxidation
- inlet pipe
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- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 53
- 238000007639 printing Methods 0.000 title claims abstract description 23
- 230000003647 oxidation Effects 0.000 claims abstract description 72
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 72
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 62
- 238000001179 sorption measurement Methods 0.000 claims abstract description 59
- 238000001914 filtration Methods 0.000 claims abstract description 39
- 230000003197 catalytic effect Effects 0.000 claims abstract description 21
- 238000011045 prefiltration Methods 0.000 claims abstract description 21
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000945 filler Substances 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 146
- 238000003795 desorption Methods 0.000 claims description 28
- 238000010521 absorption reaction Methods 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 8
- 241001466460 Alveolata Species 0.000 claims description 4
- 241000264877 Hippospongia communis Species 0.000 claims description 4
- 239000000872 buffer Substances 0.000 claims description 4
- 239000003054 catalyst Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 229910052763 palladium Inorganic materials 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 241000220317 Rosa Species 0.000 claims description 3
- 239000006096 absorbing agent Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000010970 precious metal Substances 0.000 claims description 3
- 239000002918 waste heat Substances 0.000 claims description 3
- 238000000746 purification Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 239000013589 supplement Substances 0.000 abstract description 3
- 239000002904 solvent Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 239000000976 ink Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 125000001967 indiganyl group Chemical group [H][In]([H])[*] 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/76—Gas phase processes, e.g. by using aerosols
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/102—Platinum group metals
- B01D2255/1023—Palladium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/70—Non-metallic catalysts, additives or dopants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Dispersion Chemistry (AREA)
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention discloses a kind of intaglio printing VOCs Processing tecchnics and its equipment, including air inlet pipe, one end side of the air inlet pipe is connected with pre-filtering case, adsorption box, catalysis oxidation case and tail gas baffle-box, the pre-filtering case is internally provided with prefilter, and it is connected to by the first communicating pipe between pre-filtering case and adsorption box, that states adsorption box is internally provided with adsorption stuffing, the adsorption box is connected to catalysis oxidation case, it is provided with catalytic filler in the catalysis oxidation case, it is provided with electrical heating net in the catalytic filler, the side of the catalysis oxidation case is equipped with ozone generator, it is connected to by ozone air inlet pipe between the ozone generator and catalysis oxidation case, it is communicated with tail gas escape pipe at the top of the catalysis oxidation case.The present invention makes full use of the heat of VOCs catalysis oxidations, reduces the energy supplement in catalytic oxidation process, economizes on resources, and VOCs exhaust gas can achieve the effect that the tail gas non-secondary pollution of purification efficiency height, energy-saving safe and catalysis oxidation.
Description
Technical field
The present invention relates to VOCs Treatment process field more particularly to a kind of intaglio printing VOCs Processing tecchnics and its equipment.
Background technology
The major product of packages printing factory is the printed matter of various plastic films, and colour is largely used in production
The solvent or diluent (solvent) of ink and organic solvent or diluent, ink is mainly toluene, ethyl acetate and a small amount of butanone.These solvents are in product
Become exhaust gas (VOCs) in production process to be largely discharged, VOCs produces photochemical fog and secondary dirt under action of ultraviolet light
Object is contaminated, phenomena such as acid rain, photochemical pollution, city haze and it has direct relationship, seriously threatens ecological environment, direct shadow
Ring health safety.Therefore, it finds efficient, reliable method and administers volatile organic waste gas, oneself becomes currently urgent and is essential
It solves the problems, such as.
A kind of VOCs governance process technologies of printing industry are proposed in patent CN201710707417.5, including are walked as follows
Suddenly：Gas sampling：By air-introduced machine collect ink tank air draft, the middle low concentration gas that generates of air draft and environment air draft, by drawing
Wind turbine collects the intermediate concentration exhaust gas that baking oven air draft generates；Runner thickening-purification technology：The middle low concentration gas of collection is passed through into runner
Thickening-purification technology device is concentrated and is purified, and concentrated gas, purified gas direct emission are obtained after desorption；Solvent recovery or
Oxidation is destroyed：The intermediate concentration exhaust gas of collection and concentrated gas are subjected to purification and solvent recovery by solvent recovery unit, or
Oxidation destruction is carried out using oxidation apparatus for destroying, complex treatment process aoxidizes in Destruction, needs to consume compared with multiple-energy-source,
And the tail gas conversion ratio of its processing VOCs is not high, vent gas treatment is incomplete, is commonly present secondary pollution, we design one kind thus
Intaglio printing VOCs Processing tecchnics and its equipment, to solve the above problems.
Invention content
The purpose of the present invention is to solve the higher and vent gas treatment existing in the prior art that consumes energy, not exclusively there are two
The shortcomings that secondary pollution, and a kind of intaglio printing VOCs Processing tecchnics and its equipment proposed.
To achieve the goals above, present invention employs following technical solutions：
One end side of a kind of intaglio printing VOCs abatement equipments, including air inlet pipe, the air inlet pipe is connected with pre-filtering
Case, adsorption box, catalysis oxidation case and tail gas baffle-box, the pre-filtering case are internally provided with prefilter, and pre-filtering case
It is connected to by the first communicating pipe between adsorption box, the adsorption box is internally provided with adsorption stuffing, and the adsorption box passes through
Second communicating pipe was connected to catalysis oxidation case, and the catalysis oxidation case is internally provided with catalytic filler, the catalytic filler
It is internally provided with electrical heating net, the side of the catalysis oxidation case is provided with ozone generator, the ozone generator and catalysis
It is connected to by ozone air inlet pipe between oxidation case, tail gas escape pipe, and catalysis oxidation is communicated at the top of the catalysis oxidation case
Case is connected to by tail gas escape pipe with tail gas baffle-box, and the tail gas baffle-box is internally provided with exhaust gas filter, and tail gas
Desorption inlet pipe is communicated on baffle-box, the tail gas baffle-box is connected to by desorption inlet pipe with adsorption box, it is described be desorbed into
It is communicated with cooling air inlet pipe on tracheae, and is provided with gas temperature buffer in desorption inlet pipe, is offered on the adsorption box
Gas outlet, and gas outlet is arranged in side of the adsorption stuffing far from the first communicating pipe.
Preferably, the mounting structure of the prefilter inside the pre-filtering case and the tail gas filtering inside tail gas baffle-box
The mounting structure of device is identical, is both provided with opening at the top of the pre-filtering case and tail gas baffle-box, and opening is provided with case
Lid.
Preferably, one end of the case lid and the open at one end of tail gas baffle-box are side walls hinged, and the case lid is far from hinged
One end be provided with two groups of fixed plates, and fixed plate is fixed case lid by screw, is respectively provided on four groups of side walls of the case lid
There is sealing strip.
Preferably, described to be provided with two groups of mounting plates with pre-filtering case and the inside of tail gas baffle-box, described in two groups
Mounting plate is symmetrical arranged the both sides of opening, and two groups of round holes are offered on mounting plate, and connecting rod is provided in round hole, described
Mounting plate is connected with fixed frame by connecting rod, and the pre-filtering case respectively will be with pre-filtering by fixed frame with tail gas baffle-box
Device is fixed with exhaust gas filter.
Preferably, the fixed frame is made of two and half frames, the normal c-type structure of half frame described in two groups, and c-opening phase
Right, the c-opening both ends of half frame described in two groups are respectively connected with latch, and are connected by lock-screw between latch.
A kind of intaglio printing VOCs Processing tecchnics, include the following steps：
S1：Tail gas pre-processes and absorption：Discarded will be passed through Rose Box in adsorption box, by with absorber and adsorption stuffing
Pre-filtering and absorption are carried out, the clean gas after absorption between gas outlet by being discharged；
S2：Tail gas is desorbed：The adsorption stuffing of VOCs has been adsorbed after desorption inlet pipe is passed through 70~100 DEG C of catalysis oxidations
After tail gas, VOCs is detached from from adsorption stuffing；
S3：End gas catalytic oxidation：Concentrated gas after desorption is passed through in catalysis oxidation case, through the catalysis in catalysis oxidation case
The temperature of agent filler catalysis oxidation, the electrical heating net in catalysis oxidation case is increased between 120~200 DEG C；
S4：Tail gas waste heat recycles：By the tail gas after catalysis oxidation after the filtering of tail gas baffle-box, pass through desorption inlet pipe tune
By the way that adsorption stuffing is desorbed in air-suction trunk after temperature, and tail gas temperature adjustment is between 70~100 DEG C.
Preferably, the adsorption stuffing in step S1 in adsorption box is Alveolate activated carbon.
Preferably, catalytic filler is to be urged using ceramic honey comb as the precious metal palladium of carrier is compound in catalysis oxidation case in step S3
Agent.
Compared with prior art, the beneficial effects of the invention are as follows：
1, in the present invention, by tail gas baffle-box by after the exhaust collection of VOCs catalysis oxidations, and pass through desorption inlet pipe
It is passed through in adsorption box, adsorption stuffing is desorbed, make full use of the heat of VOCs catalysis oxidations, reduce in catalytic oxidation process
Energy supplement, economize on resources.
2, in the present invention, VOCs is catalytically oxidized to by CO by ozone and catalytic filler2With H2Organic gas in O, VOCs
Conversion ratio is higher, and VOCs exhaust gas can reach the effect of purification efficiency height, energy-saving safe and the tail gas non-secondary pollution of catalysis oxidation
Fruit.
3, in the present invention, the prefilter in pre-filtering case in installation and is replaced with the exhaust gas filter in tail gas baffle-box
When, prefilter is respectively fixed prefilter and tail gas baffle-box by fixed frame with exhaust gas filter, prefilter with
The installation of exhaust gas filter and dismounting are convenient, make the easy to change of prefilter and exhaust gas filter, effective to improve VOCs's
The filter efficiency of pre-filtering and catalysis oxidation tail gas.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of intaglio printing VOCs abatement equipments proposed by the present invention；
Fig. 2 is enlarged drawing at the A in Fig. 1；
Fig. 3 is the fixed frame structural schematic diagram in a kind of intaglio printing VOCs abatement equipments proposed by the present invention；
Fig. 4 is the tail gas baffle-box structure top view in a kind of intaglio printing VOCs abatement equipments proposed by the present invention.
In figure：1 air inlet pipe, 2 pre-filtering casees, 3 prefilters, 4 first communicating pipes, 5 adsorption boxes, 6 adsorption stuffings, 7 second
Communicating pipe, 8 catalysis oxidation casees, 9 catalytic fillers, 10 electrical heating nets, 11 ozone generators, 12 ozone air inlet pipe, 13 tail gas buffering
Case, 131 case lids, 132 fixed plates, 133 sealing strips, 134 mounting plates, 135 connecting rods, 136 fixed frames, 1,361 half frames, 1362 locks
Tight plate, 1363 lock-screws, 14 exhaust gas filters, 15 desorption inlet pipes, 16 cooling air inlet pipe, 17 gas flow temperature buffers, 18
Gas outlet, 19 tail gas escape pipes.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1-4, a kind of intaglio printing VOCs abatement equipments, including air inlet pipe 1, one end side connection of air inlet pipe 1
There are pre-filtering case 2, adsorption box 5, catalysis oxidation case 8 and tail gas baffle-box 13, pre-filtering case 2 to be internally provided with prefilter 3,
And be connected to by the first communicating pipe 4 between pre-filtering case 2 and adsorption box 5, adsorption box 5 is internally provided with adsorption stuffing 6, absorption
Case 5 is connected to by the second communicating pipe 7 with catalysis oxidation case 8, and catalysis oxidation case 8 is internally provided with catalytic filler 9, catalytic filler
9 are internally provided with electrical heating net 10, and the side of catalysis oxidation case 8 is provided with ozone generator 11, ozone generator 11 with urge
Change and be connected to by ozone air inlet pipe 12 between aoxidizing case 8, the top of catalysis oxidation case 8 is communicated with tail gas escape pipe 19, and is catalyzed
Oxidation case 8 is connected to by tail gas escape pipe 19 with tail gas baffle-box 13, and tail gas baffle-box 13 is internally provided with exhaust gas filter
14, the installation knot of the mounting structure and the exhaust gas filter 14 inside tail gas baffle-box 13 of the prefilter 3 inside pre-filtering case 2
Structure is identical, and pre-filtering case 2 and the top of tail gas baffle-box 13 are both provided with opening, and opening is provided with case lid 131, case lid
131 one end and the open at one end of tail gas baffle-box 13 are side walls hinged, and case lid 131 is provided with two groups far from hinged one end and fixes
Plate 132, and fixed plate 132 is fixed case lid 131 by screw, and sealing strip 133 is both provided on four groups of side walls of case lid 131,
Two groups of mounting plates 134 are provided with the inside of pre-filtering case 2 and tail gas baffle-box 13, two groups of mounting plates 134 are symmetrical arranged
The both sides of opening, and two groups of round holes are offered on mounting plate 134, connecting rod 135 is provided in round hole, mounting plate 134 is logical
It crosses connecting rod 135 and is connected with fixed frame 136, pre-filtering case 2 respectively will be with pre-filtering by fixed frame 136 with tail gas baffle-box 13
Device 3 is fixed with exhaust gas filter 14, and fixed frame 136 is made of two and half frames 1361, the normal c-type structure of two and half frames 1361, and C
Type opening is opposite, and the c-opening both ends of two and half frames 1361 are respectively connected with latch 1362, and pass through lock between latch 1362
Tight screw 1363 connects, and desorption inlet pipe 15 is communicated on tail gas baffle-box 13, and tail gas baffle-box 13 passes through desorption inlet pipe
15 are connected to adsorption box 5, cooling air inlet pipe 16 are communicated in desorption inlet pipe 15, and be provided with gas temperature in desorption inlet pipe 15
Buffer 17 is spent, offers gas outlet 18 on adsorption box 5, and gas outlet 18 was arranged in adsorption stuffing 6 far from the first communicating pipe 4
Side.
A kind of intaglio printing VOCs Processing tecchnics, include the following steps：
S1：Tail gas pre-processes and absorption：Discarded will be passed through Rose Box in adsorption box, by with absorber and adsorption stuffing
Pre-filtering and absorption are carried out, the clean gas after absorption between gas outlet by being discharged；
S2：Tail gas is desorbed：The adsorption stuffing of VOCs has been adsorbed after desorption inlet pipe is passed through 70~100 DEG C of catalysis oxidations
After tail gas, VOCs is detached from from adsorption stuffing；
S3：End gas catalytic oxidation：Concentrated gas after desorption is passed through in catalysis oxidation case, through the catalysis in catalysis oxidation case
The temperature of agent filler catalysis oxidation, the electrical heating net in catalysis oxidation case is increased between 120~200 DEG C；
S4：Tail gas waste heat recycles：By the tail gas after catalysis oxidation after the filtering of tail gas baffle-box, pass through desorption inlet pipe tune
By the way that adsorption stuffing is desorbed in air-suction trunk after temperature, and tail gas temperature adjustment is between 70~100 DEG C, in step S1 in adsorption box
Adsorption stuffing be Alveolate activated carbon, catalytic filler is using ceramic honey comb as your gold of carrier in catalysis oxidation case in step S3
Belong to palladium composite catalyst.
Embodiment 1：VOCs tail gas leads to air inlet pipe 1 and is passed through in pre-filtering case 2, is carried out VOCs tail gas by prefilter 3
Pre-filtering is handled, and filtered VOCs tail gas is passed through by the first communicating pipe 4 in adsorption box 5, and the absorption in adsorption box 5 is passed through
VOCs tail gas is adsorbed clean gas and is discharged by gas outlet 18 by filler 6 (Alveolate activated carbon), and adsorption stuffing 6 adsorbs
After saturation, the high-temperature tail gas after catalysis oxidation of being divulged information by desorption inlet pipe 15 is passed through in adsorption box 5, makes VOCs tail gas from absorption
It is desorbed on filler 6, and the VOCs tail gas after desorption is passed through by the second communicating pipe 7 in catalysis oxidation case 8, and VOCs tail gas is made to urge
Change generation catalysis oxidation in oxidation case 8 and is converted to CO2With H2O, and the high-temperature tail gas after catalysis oxidation is logical by tail gas escape pipe 19
Enter in tail gas baffle-box 13, and by desorption inlet pipe 15, so that high-temperature tail gas is passed through in adsorption box 3 and be desorbed, in desorption
In most of the time, the operation of catalytic combustion device does not have to supplement energy, and most of thermal current of its discharge is used in
On desorption and regeneration in adsorption box 5, and then the heat relatively adequately generated using VOCs end gas catalytic oxidations.
Embodiment 2：VOCs tail gas is passed through in catalysis oxidation case 8, generates ozone by ozone generator 11, and pass through ozone
Air inlet pipe 12 by electrical heating net 10 by catalysis oxidation case 8, giving VOCs tail gas heatings, and pass through ozone, catalytic filler 9
(using ceramic honey comb as the precious metal palladium composite catalyst of carrier) is by VOCs end gas catalytic oxidations at CO2With H2In O, VOCs tail gas
Organic gas conversion ratio it is higher, VOCs exhaust gas can reach the tail gas of purification efficiency high, energy-saving safe and catalysis oxidation without secondary
The effect of pollution.
Embodiment 3：Prefilter 3 in pre-filtering case 2 and the exhaust gas filter 14 in tail gas baffle-box 13 installation with
When replacement, prefilter 3 is respectively consolidated prefilter 3 and tail gas baffle-box 13 by fixed frame 136 with exhaust gas filter 14
It is fixed, specifically latch 1362 is fixed by lock-screw 1363, and then two and half frames 1361 is made to hold prefilter 3 and tail tightly
Air filter 14, and during two and half frames 1361 holding, slided on mounting plate 134 by connecting rod 135, make two and half frames
1361 movements and fix stably, and then make the fix stably of prefilter 3 and exhaust gas filter 14, and prefilter 3 and tail gas
The installation of filter 14 and dismounting are convenient, and then make the easy to change of prefilter 3 and exhaust gas filter 14.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of intaglio printing VOCs abatement equipments, including air inlet pipe (1), which is characterized in that one end one of the air inlet pipe (1)
Side is connected with pre-filtering case (2), adsorption box (5), catalysis oxidation case (8) and tail gas baffle-box (13), the pre-filtering case (2)
It is internally provided with prefilter (3), and is connected to by the first communicating pipe (4) between pre-filtering case (2) and adsorption box (5), it is described
Adsorption box (5) is internally provided with adsorption stuffing (6), and the adsorption box (5) passes through the second communicating pipe (7) and catalysis oxidation case
(8) it is connected to, the catalysis oxidation case (8) is internally provided with catalytic filler (9), and catalytic filler (9) are internally provided with
Electrical heating net (10), the side of the catalysis oxidation case (8) are provided with ozone generator (11), the ozone generator (11) with
It is connected to by ozone air inlet pipe (12) between catalysis oxidation case (8), tail gas outlet is communicated at the top of the catalysis oxidation case (8)
It manages (19), and catalysis oxidation case (8) is connected to by tail gas escape pipe (19) with tail gas baffle-box (13), the tail gas baffle-box
(13) be internally provided with exhaust gas filter (14), and desorption inlet pipe (15), the tail are communicated on tail gas baffle-box (13)
Gas baffle-box (13) is connected to by desorption inlet pipe (15) with adsorption box (5), and cooling is communicated on the desorption inlet pipe (15)
Air inlet pipe (16), and gas temperature buffer (17) is provided in desorption inlet pipe (15), it is offered out on the adsorption box (5)
Gas port (18), and gas outlet (18) setting is in side of the adsorption stuffing (6) far from the first communicating pipe (4).
2. a kind of intaglio printing VOCs abatement equipments according to claim 1, which is characterized in that the pre-filtering case (2)
The mounting structure phase of the mounting structure of internal prefilter (3) exhaust gas filter (14) internal with tail gas baffle-box (13)
Together, it is both provided with opening at the top of the pre-filtering case (2) and tail gas baffle-box (13), and opening is provided with case lid (131).
3. a kind of intaglio printing VOCs abatement equipments according to claim 2, which is characterized in that the case lid (131)
The open at one end of one end and tail gas baffle-box (13) is side walls hinged, and the case lid (131) is provided with two groups far from hinged one end
Fixed plate (132), and fixed plate (132) is fixed by case lid (131) by screw, on four groups of side walls of the case lid (131)
It is provided with sealing strip (133).
4. a kind of intaglio printing VOCs abatement equipments according to claim 2, which is characterized in that described and pre-filtering case
(2) two groups of mounting plates (134) are provided with the inside of tail gas baffle-box (13), mounting plate (134) described in two groups is symmetrically set
The both sides of opening are set, and offer two groups of round holes on mounting plate (134), connecting rod (135), the peace are provided in round hole
Loading board (134) is connected with fixed frame (136), the pre-filtering case (2) and tail gas baffle-box (13) difference by connecting rod (135)
It will be fixed with prefilter (3) and exhaust gas filter (14) by fixed frame (136).
5. a kind of intaglio printing VOCs abatement equipments according to claim 4, which is characterized in that the fixed frame (136)
It is made of two and half frames (1361), the normal c-type structure of half frame (1361) described in two groups, and c-opening is opposite, half frame described in two groups
(1361) c-opening both ends are respectively connected with latch (1362), and pass through lock-screw (1363) between latch (1362)
Connection.
6. a kind of intaglio printing VOCs Processing tecchnics, which is characterized in that include the following steps：
S1：Tail gas pre-processes and absorption：It is passed through discarded in Rose Box and adsorption box, by being carried out with absorber and adsorption stuffing
Pre-filtering and absorption, the clean gas after absorption between gas outlet by being discharged；
S2：Tail gas is desorbed：Tail gas of the adsorption stuffing of VOCs after desorption inlet pipe is passed through 70~100 DEG C of catalysis oxidations is adsorbed
Afterwards, VOCs is detached from from adsorption stuffing；
S3：End gas catalytic oxidation：Concentrated gas after desorption is passed through in catalysis oxidation case, is filled out through the catalyst in catalysis oxidation case
Expect that catalysis oxidation, the temperature of the electrical heating net in catalysis oxidation case are increased between 120~200 DEG C；
S4：Tail gas waste heat recycles：By the tail gas after catalysis oxidation after the filtering of tail gas baffle-box, after desorption inlet pipe temperature adjustment
By the way that adsorption stuffing is desorbed in air-suction trunk, and tail gas temperature adjustment is between 70~100 DEG C.
7. a kind of intaglio printing VOCs Processing tecchnics according to claim 6, which is characterized in that in step S1 in adsorption box
Adsorption stuffing be Alveolate activated carbon.
8. a kind of intaglio printing VOCs Processing tecchnics according to claim 6, which is characterized in that catalysis oxidation in step S3
Catalytic filler is using ceramic honey comb as the precious metal palladium composite catalyst of carrier in case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810445868.0A CN108392938A (en) | 2018-05-11 | 2018-05-11 | A kind of intaglio printing VOCs Processing tecchnics and its equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810445868.0A CN108392938A (en) | 2018-05-11 | 2018-05-11 | A kind of intaglio printing VOCs Processing tecchnics and its equipment |
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| CN108392938A true CN108392938A (en) | 2018-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810445868.0A Pending CN108392938A (en) | 2018-05-11 | 2018-05-11 | A kind of intaglio printing VOCs Processing tecchnics and its equipment |
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