CN207478233U - A kind of waste gas recovering device - Google Patents
A kind of waste gas recovering device Download PDFInfo
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- CN207478233U CN207478233U CN201721303412.8U CN201721303412U CN207478233U CN 207478233 U CN207478233 U CN 207478233U CN 201721303412 U CN201721303412 U CN 201721303412U CN 207478233 U CN207478233 U CN 207478233U
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- 239000002912 waste gas Substances 0.000 title claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 237
- 238000001816 cooling Methods 0.000 claims abstract description 100
- 239000002808 molecular sieve Substances 0.000 claims abstract description 63
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000002156 mixing Methods 0.000 claims abstract description 42
- 238000007766 curtain coating Methods 0.000 claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 230000008929 regeneration Effects 0.000 claims abstract description 13
- 238000011069 regeneration method Methods 0.000 claims abstract description 13
- 239000000498 cooling water Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000009423 ventilation Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 238000004064 recycling Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 abstract description 16
- 239000012535 impurity Substances 0.000 abstract description 14
- 239000000203 mixture Substances 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 12
- 238000011084 recovery Methods 0.000 description 12
- 238000007710 freezing Methods 0.000 description 5
- 230000008014 freezing Effects 0.000 description 5
- WFKAJVHLWXSISD-UHFFFAOYSA-N isobutyramide Chemical compound CC(C)C(N)=O WFKAJVHLWXSISD-UHFFFAOYSA-N 0.000 description 5
- 238000005498 polishing Methods 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 238000010792 warming Methods 0.000 description 5
- 238000003795 desorption Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002466 imines Chemical class 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- OHLUUHNLEMFGTQ-UHFFFAOYSA-N N-methylacetamide Chemical compound CNC(C)=O OHLUUHNLEMFGTQ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005576 amination reaction Methods 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a kind of waste gas recovering devices；Heat exchanger, filter and gas mixing zone are sequentially communicated composition imidization exhaust gas treatment unit in waste gas recovering device；Curtain coating section heat exchanger, gas mixing zone, cooling freezer condenser, gas-liquid separate component, molecular sieve concentration runner treatment region recycle successively with heat exchanger connects composition mixed gas processing unit；Heat exchanger, heater, molecular sieve concentration runner renewing zone, cooler and gas mixing zone are sequentially communicated composition heating regeneration unit；Molecular sieve concentration runner cooling zone and gas mixing zone are sequentially communicated composition cooling unit；In waste gas recovering device in imidization exhaust gas treatment unit and mixed gas processing unit, cool down to gas and filter and intercept solid impurity, the load of molecular sieve concentration runner can be mitigated significantly, prolonged the service life.
Description
Technical field
The utility model is related to a kind of waste gas recovering devices, belong to waste gas recovery technical field.
Background technology
There are 100 a plurality of Production Line for Polyimide Film in the whole nation at present, and annual production capacity often produces one ton more than 10000 tons
Imines film will consume four tons of solvent (mainly N, N-dimethylacetylamide), i.e., about at least about to consume within 1 year 40000 tons it is molten
Agent, solvent are a kind of medium, and solvent will dry volatilization after film forming.It is domestic usually to be recycled with water cooling/condensation recycling, spray
The methods of the volatilization gas that generates of recycling, the rate of recovery reaches about 40-60%, and also some producers have carried out doing for circulation and stress
Method considerably increases the rate of recovery, but is difficult to concentration of emission 35mg/m in the prior art3Standard, therefore arrange every year to big
Gas also has 10000-20000 tons of solvent exhaust gas.
The method recycling exhaust gas solvent that the related patents applied in recent years, wherein proposition adsorption runner concentrate, has apparent
Effect, i.e., the exhaust gas part sent workshop is sent directly into runner as regeneration hot wind, after cooling with other portion
Exhaust gas is divided to be sent into runner processing after merging cooling.But solid impurity that runner is easily generated in production process blocks, need by
The frequency that runner removes cleaning is very high, and the shortcomings that removing cleaning one is trouble, shortcoming second is that the service life of runner is also limited,
Because of the industry this problem in the urgent need to address.
Utility model content
For overcome the deficiencies in the prior art, first of the utility model is designed to provide a kind of waste gas recovery dress
It puts, the device is for exhaust gas caused by polyimide film production process and is handled, wherein imidization exhaust gas treatment unit
In mixed gas processing unit, cool down to gas and filter and intercept solid impurity, solid impurity filtration treatment twice,
The load of molecular sieve concentration runner can be mitigated significantly, extend service life.
Second of the utility model is designed to provide a kind of gas recovery method, in this method to imidization exhaust gas into
Row cooling carries out cooling freezing processing with filtration treatment, to mixed gas and gas-liquid separating treatment, processed gas meet back
With condition without detonation, production line circulating and recovering can be sent back to again, do not discharged externally.
Realizing first purpose of the utility model can be reached by adopting the following technical scheme that：A kind of waste gas recovery dress
It puts, including：Heat exchanger, filter, curtain coating section heat exchanger, gas mixing zone, cooling freezer condenser, gas-liquid separate component,
Molecular sieve concentration runner, heater and cooler；The molecular sieve concentration runner includes cooling zone, renewing zone and treatment region；
The heat exchanger, filter and gas mixing zone are sequentially communicated and form imidization exhaust gas treatment unit；
The curtain coating section heat exchanger, gas mixing zone, cooling freezer condenser, gas-liquid separate component, molecular sieve concentration
Runner treatment region is connected with heat exchanger and forms mixed gas processing unit；
The heat exchanger, heater, molecular sieve concentration runner renewing zone, cooler and gas mixing zone are sequentially communicated and group
Into heating regeneration unit；
The molecular sieve concentration runner cooling zone and gas mixing zone are sequentially communicated and form cooling unit.
Further, the heat exchanger includes First Heat Exchanger and the second heat exchanger；
The First Heat Exchanger, the second heat exchanger, filter and gas mixing zone are sequentially communicated and form imidization exhaust gas
Processing unit；
The curtain coating section heat exchanger, gas mixing zone, cooling freezer condenser, gas-liquid separate component, molecular sieve concentration
Runner treatment region and the second heat exchanger are connected and form mixed gas processing unit；
Second heat exchanger, First Heat Exchanger, heater, molecular sieve concentration runner renewing zone, cooler and gas mix
Area is closed to be sequentially communicated and form heating regeneration unit；
The molecular sieve concentration runner cooling zone and gas mixing zone are sequentially communicated and form cooling unit.
Further, at least two filter screens are equipped in the filter, at least two filter screen is according to ventilation direction
Arrangement, the mesh number of mesh are gradually increased according to ventilation direction.
Further, the gas-liquid separate component is liquid barrier.
Further, it is described cooling freezer condenser include according to ventilation direction connection first circulation cooling water heat exchanger,
Second circulation cooling water heat exchanger and circulating frozen water- to-water heat exchanger.
Further, in mixed gas processing unit, the outlet side of the heat exchanger is equipped with treatment region frequency control wind turbine.
Further, it heats in regeneration unit, the outlet side of the cooler is equipped with renewing zone frequency control wind turbine.
Further, in cooling unit, the outlet side of the molecular sieve concentration runner cooling zone is equipped with cooling zone frequency conversion control
Wind turbine processed.
Realizing second purpose of the utility model can be reached by adopting the following technical scheme that：
A kind of gas recovery method, including：
Imidization exhaust gas polishing steps：Imidization exhaust gas is cooled down and filtration treatment successively, obtains processed Asia
Amination exhaust gas；
Mixed gas processing step：Curtain coating section exhaust gas is subjected to cooling processing and is mixed with processed imidization exhaust gas,
Obtain mixed gas；Mixed gas is divided into mixed gas main road and mixing after carrying out cooling freezing and gas-liquid separating treatment successively
Gas bypassing；Mixed gas main road removes dimethylacetylamide and heating treatment successively；Mixed gas master after heating treatment
Road is again divided into the first main road and the second main road, and the first main road sends production line back to after heating treatment；
Gas heating stepses：In mixed gas processing step, the second main road is heated successively, desorption and regeneration and cooling
Afterwards, it is mixed with the curtain coating section exhaust gas through cooling processing and processed imidization exhaust gas；
Gas cooling step：In mixed gas processing step, mixed gas bypass for molecular sieve concentration runner into
Row cooling, the curtain coating section exhaust gas then handled with cooling re-mix.
Further, imidization exhaust gas polishing steps：Imidization exhaust gas is passed through heat exchanger and filter, Ran Houtong successively
Enter gas mixing zone；
Mixed gas processing step：Curtain coating section exhaust gas is passed through curtain coating section heat exchanger and gas mixing zone successively, is obtained
Mixed gas；Mixed gas is divided into mixed gas main road after being passed through cooling freezer condenser and gas-liquid separate component successively and mixes
Close gas bypassing；Mixed gas main road is passed through molecular sieve concentration runner treatment region and heat exchanger successively；By the mixing of heat exchanger
Gas main road is again divided into the first main road and the second main road, and the first main road sends production line back to after being passed through curtain coating section heat exchanger；
Gas heating stepses：In mixed gas processing step, the second main road is passed through heater successively, molecular sieve concentration turns
Take turns renewing zone, cooler and gas mixing zone；
Gas cooling step：In mixed gas processing step, mixed gas bypass is passed through molecular sieve concentration runner successively
Cooling zone and gas mixing zone.
Further, the heat exchanger includes First Heat Exchanger and the second heat exchanger；
Imidization exhaust gas polishing steps：Imidization exhaust gas is passed through First Heat Exchanger, the second heat exchanger and filter successively；
Mixed gas processing step：Mixed gas is divided into after being passed through cooling freezer condenser and gas-liquid separate component successively
Mixed gas main road and mixed gas bypass；Mixed gas main road is passed through molecular sieve concentration runner treatment region and the second heat exchange successively
Device；
Gas heating stepses：In mixed gas processing step, the second main road be passed through successively First Heat Exchanger, heater,
Molecular sieve concentration runner renewing zone, cooler and gas mixing zone.
Further, the outlet side of the heat exchanger is equipped with treatment region frequency control wind turbine；The treatment region frequency control
Wind turbine promotes mixed gas main road to pass through molecular sieve concentration runner treatment region；
The outlet side of the cooler is equipped with renewing zone frequency control wind turbine；The renewing zone frequency control wind turbine promotes
Two main roads pass through molecular sieve concentration runner renewing zone；
The outlet side of the molecular sieve concentration runner cooling zone is equipped with cooling zone frequency control wind turbine；The cooling zone frequency conversion
Control wind turbine promotes mixed gas bypass to pass through molecular sieve concentration runner cooling zone.
Wherein, First Heat Exchanger, the second heat exchanger and curtain coating section heat exchanger are gas gas heat transmission equipment, and function is to pass through
Metal transmits heat, and the gas heat all the way of high temperature is passed to the gas all the way of low temperature, and the gas do not gone the same way has independent pipe
Heat transmission only occurs in First Heat Exchanger and the second heat exchanger for road；
Wherein, first circulation cooling water heat exchanger, second circulation cooling water heat exchanger, circulating frozen water- to-water heat exchanger and cooling
Device is gas water heat transmission equipment, and heat, which occurs, by external flow and the gas being passed through transmits, to adjust gas temperature.
Compared with prior art, the beneficial effects of the utility model are：
1st, the waste gas recovering device of the utility model is cooled down and is filtered to exhaust gas in imidization exhaust gas treatment unit,
Solid impurity is intercepted；
2nd, the waste gas recovering device of the utility model in mixed gas processing unit, be down to low by the organic principle in exhaust gas
Temperature is liquefied below dew point so that the solid impurity in exhaust gas enters liquid by spray film drop package, then passes through gas-liquid separation
Component removes liquid and solid impurity, and effective intercept process is carried out to solid impurity, can mitigate molecular sieve concentration significantly and turn
The load of wheel, prolongs the service life；
3rd, cooled down in the gas recovery method of the utility model to imidization exhaust gas and filtration treatment, to mixed gas
Cooling freezing processing and gas-liquid separating treatment are carried out, cooling may be such that gas liquefaction as liquid, and liquid is wrapped in solid impurity, and
Gas-liquid separation processing detaches liquid, while remove solid impurity with gas, can mitigate molecular sieve concentration runner significantly
Load；
4th, the waste gas recovering device of the utility model and gas recovery method treated gas sends back to production line use,
Closed circuit does not discharge, energy conservation and environmental protection.
Description of the drawings
Fig. 1 is the gas circuit schematic diagram of the waste gas recovering device of embodiment 1；
Fig. 2 is the flow diagram of embodiment 3；
In figure, 11, First Heat Exchanger；12nd, the second heat exchanger；2nd, filter；3rd, it is cast section heat exchanger；4th, gas mixing
Area；5th, freezer condenser is cooled down；51st, first circulation cooling water heat exchanger；52nd, second circulation cooling water heat exchanger；53rd, it recycles cold
Freeze water- to-water heat exchanger；6th, gas-liquid separate component；7th, molecular sieve concentration runner；71st, cooling zone；711st, cooling zone frequency control wind turbine；
72nd, renewing zone；721st, renewing zone frequency control wind turbine；73rd, treatment region；731st, treatment region frequency control wind turbine；8th, heater；9、
Cooler.
Specific embodiment
In the following, with reference to attached drawing and specific embodiment, the utility model is described further：
Embodiment 1：
As shown in Figure 1：A kind of waste gas recovering device, including：First Heat Exchanger 11, the second heat exchanger 12, filter 2, stream
Prolong section heat exchanger 3, gas mixing zone 4, cooling freezer condenser 5, gas-liquid separate component 6, molecular sieve concentration runner 7, heating
Device 8 and cooler 9；
Molecular sieve concentration runner 7 includes cooling zone 71, renewing zone 72 and treatment region 73.
First Heat Exchanger 11, the second heat exchanger 12, filter 2 and gas mixing zone 4 are sequentially communicated and form imidization and give up
Gas disposal unit；
As preferred embodiment, 100 mesh filter screens, 200 mesh filter screens and 300 mesh filter screens are equipped in filter 2,
Three filter screens are according to ventilation direction arrangement (strainer is not shown in figure).
It is cast section heat exchanger 3, gas mixing zone 4, cooling freezer condenser 5, gas-liquid separate component 6, molecular sieve concentration
Runner treatment region 73, the second heat exchanger 12 are connected by gas circuit with curtain coating section heat exchanger 3 and form mixed gas processing unit；
As preferred embodiment, gas-liquid separate component 6 is liquid barrier；
As preferred embodiment, cooling freezer condenser 5 includes the first circulation cooling water according to the connection of ventilation direction
Heat exchanger 51, second circulation cooling water heat exchanger 52 and circulating frozen water- to-water heat exchanger 53；First in cooling freezer condenser 5 follows
Ring cooling water heat exchanger 51 is 2-5 DEG C lower than interior water temperature with the cooling water temperature of second circulation cooling water heat exchanger 52, with cooling
Water heat exchange mode cools down to mixed gas, and the gradient that cooling freezer condenser 5 is then completed with circulating frozen water- to-water heat exchanger 53 drops
Gas temperature can be greatly lowered in temperature function, to ensure that temperature is in exhaust dew point hereinafter, in circulating frozen water- to-water heat exchanger 53
Chilled water temperature is 5-15 DEG C, is 5-20 DEG C through cooling down treated the gas temperature of freezer condenser 5；
As preferred embodiment, the outlet side of the second heat exchanger 12 is equipped with treatment region frequency control wind turbine 731；Processing
Area's frequency control wind turbine 731 promotes mixed gas to pass through molecular sieve concentration runner treatment region 73；
First circulation cooling water heat exchanger 51, second circulation cooling water heat exchanger 52 in the waste gas recovering device of the present embodiment
The cooling water of connection cooling tower is tentatively cooled down, and then circulating frozen water- to-water heat exchanger 53 connects the cryogenic freezing of refrigerator
Exhaust gas effectively can be cooled to dew point by water, on per hour under the air quantity of ten thousand stere still can by organic principle efficient liquefaction,
The step for also greatly reduce the load of molecular sieve concentration runner 7.
Second heat exchanger 12, First Heat Exchanger 11, heater 8, molecular sieve concentration runner renewing zone 72, cooler 9 are gentle
Body mixed zone 4 is sequentially communicated and forms heating regeneration unit；
It as preferred embodiment, heats in regeneration unit, the outlet side of cooler 9 is equipped with renewing zone frequency control wind
Machine 721；The rush of renewing zone frequency control wind turbine 721 passes the gas through molecular sieve concentration runner renewing zone 72.
Molecular sieve concentration runner cooling zone 71 and gas mixing zone 4 are sequentially communicated and form cooling unit；
As preferred embodiment, in cooling unit, 71 outlet side of molecular sieve concentration runner cooling zone is equipped with cooling zone
Frequency control wind turbine 711；Cooling zone frequency control wind turbine 711 promotes mixed gas to pass through molecular sieve concentration runner cooling zone 71.
Using three frequency control wind turbines in the waste gas recovering device of the present embodiment, air quantity is more effectively controlled, so as to effectively
Ground balances the air quantity ratio and energy consumption of each processing unit, is technically a much progress.
Embodiment 2：
A kind of gas recovery method, including：
Imidization exhaust gas polishing steps：Imidization exhaust gas is carried out successively at heat exchange (cooling of imidization exhaust gas) and filtering
Reason, obtains processed imidization exhaust gas；
Mixed gas processing step：Will curtain coating section exhaust gas carry out heat exchange (cooling of curtain coating section exhaust gas) processing and with through processing
Imidization exhaust gas mixing, obtain mixed gas；Mixed gas carries out cooling freezing (mixed gas cooling) and gas-liquid point successively
From be divided into after processing mixed gas main road and mixed gas bypass；Mixed gas main road remove successively dimethylacetylamide and with
Untreated imidization exhaust gas carries out heat exchange (heating of mixed gas main road)；Mixed gas main road after heat exchange process
The first main road and the second main road are again divided into, the first main road carries out heat exchange process (heating of the first main road) with curtain coating section exhaust gas
After send production line back to；
Gas heating stepses：In mixed gas processing step, the second main road heated successively (heating of the second main road),
After desorption and regeneration and cooling (cooling of the second main road), with the curtain coating section exhaust gas handled through heat exchange (cooling) and processed imines
Change exhaust gas mixing；
Gas cooling step：In mixed gas processing step, mixed gas bypass for molecular sieve concentration runner into
Row cooling, then the curtain coating section exhaust gas with being handled through heat exchange (cooling) re-mixes.
Embodiment 3：
Embodiment 3 is that the waste gas recovering device of embodiment 1 is applied to the gas recovery method of embodiment 2：
With reference to Fig. 1 and with reference to Fig. 2, polyimide film production process discharges two strands of exhaust gas, one is produced from imidization
Raw, another stock is generated from curtain coating section；About 240 DEG C of the exhaust gas temperature generated from imidization section, the exhaust gas temperature generated from curtain coating section
About 150 DEG C of degree.
Imidization exhaust gas polishing steps：Imidization exhaust gas is passed through First Heat Exchanger successively, and (imidization exhaust gas is cooled to
140-180 DEG C), the second heat exchanger (imidization exhaust gas is cooled to 50-100 DEG C) and filter, obtain processed imidization and give up
Gas then passes to gas mixing zone；
The function of First Heat Exchanger and the second heat exchanger is to transmit heat by metal, and the gas heat all the way of high temperature is passed
The gas all the way of low temperature is passed, the gas do not gone the same way has independent pipeline, only occurs in First Heat Exchanger and the second heat exchanger
Heat is transmitted, energy saving for retracting device by this method；First Heat Exchanger and the second heat exchanger carry out gradient to imidization exhaust gas
Cooling, greatly improves cooling extent, and in the imidization exhaust gas of high temperature, solid impurity is also at vapor state, and cooling is conducive to it
It is condensed into solid；The function of filter is that the solid condensed out in imidization exhaust gas by cooling is removed in a manner of filtering is miscellaneous
Matter lowers the load of molecular sieve concentration runner significantly.
Mixed gas processing step：Curtain coating section exhaust gas is passed through curtain coating section heat exchanger (curtain coating section exhaust gas cooling 50- successively
80 DEG C) and gas mixing zone (being mixed with processed imidization exhaust gas), obtain mixed gas；Mixed gas is passed through cooling successively
It is divided into mixed gas after freezer condenser (mixed gas is cooled to 5-20 DEG C) and gas-liquid separate component (gas-liquid separation processing)
Main road and mixed gas bypass；Mixed gas main road is passed through molecular sieve concentration runner treatment region (absorption dimethylacetylamide) successively
With the second heat exchanger (mixed gas main road is warming up to 50-100 DEG C)；By the second heat exchanger, (mixed gas main road is warming up to 50-
100 DEG C) mixed gas main road be again divided into the first main road and the second main road, the first main road is passed through curtain coating section heat exchanger
Production line is sent back to after (the first main road is warming up to 100-140 DEG C)；
The function of being cast section heat exchanger is to curtain coating section exhaust gas (cooling) and the first main road (heating) heat exchange, is cast section
Exhaust gas mixes in gas mixing zone with the gas through imidization exhaust gas treatment unit, heating regeneration unit and cooling unit processing
It closes, obtains mixed gas；Mixed gas is after cooling freezer condenser (cooling), the organic principle such as dimethylacetamide in exhaust gas
Amine is liquefied by (DMAC) as drop, and drop has wrapped up solid impurity, and gas-liquid separate component is lower by drop gear and collects；Molecular sieve
The function of concentration runner treatment region is to adsorb dimethylacetylamide (DMAC) remaining in mixed gas, is made two in mixed gas
The concentration of methylacetamide (DMAC) substantially reduces, then imidization exhaust gas (cooling) and mixed gas master in the second heat exchanger
Road (heating) heat exchange, the first main road send production line back to, and the second main road enters gas heating stepses.
Gas heating stepses：In mixed gas processing step, the second main road is passed through First Heat Exchanger (the second main road successively
Be warming up to 150-180 DEG C), heater (the second main road is warming up to 180 DEG C), molecular sieve concentration runner renewing zone (desorption and regeneration),
Cooler (the second main road is cooled to 50-100 DEG C) and gas mixing zone (processed curtain coating section exhaust gas and processed imidization
Exhaust gas mixes)；
Imidization exhaust gas (cooling) and the second main road (heating) carry out heat exchange in First Heat Exchanger；The function of heater is
Such as 180 DEG C of the temperature to reach control is heated to gas, molecular sieve concentration runner renewing zone is passed through and gas is concentrated
And runner heats up；Due to the effect of high-temperature gas, the DMAC being attracted in molecular sieve concentration runner is desorbed, and molecular sieve obtains
Regeneration；The outlet side of molecular sieve concentration runner renewing zone is equipped with renewing zone frequency control wind turbine；Renewing zone frequency control wind turbine promotees
High-temperature gas is made to pass through molecular sieve concentration runner renewing zone；The function of cooler is to being discharged from molecular sieve concentration runner renewing zone
Gas cooled down, be then passed to gas mixing zone, recirculate.
Gas cooling step：In mixed gas processing step, mixed gas bypass is passed through molecular sieve concentration runner successively
(the curtain coating section exhaust gas through heat exchange process mixes again for cooling zone (cooling down to molecular sieve concentration runner) and gas mixing zone
It closes)；
The outlet side of molecular sieve concentration runner cooling zone is equipped with cooling zone frequency control wind turbine；Cooling zone frequency control wind turbine
Mixed gas is promoted to pass through molecular sieve concentration runner cooling zone；Gas through over-molecular sieve concentration runner cooling zone cools down runner
And restore adsorption capacity.
Waste gas recovering device is combined implementation with gas recovery method by the present embodiment, first with imidization exhaust gas treatment unit at
Imidization exhaust gas is managed, filters fraction solids impurity therein；The unit is constantly passed through imidization exhaust gas；It is handled with mixed gas single
Member will curtain coating section exhaust gas and processed imidization exhaust gas mixing removal DMAC drops and remaining part solid impurity；To heat again
Raw unit is sent into high-temperature gas, has the function that desorption removal DMAC；Turned with cooling unit by the concentration of gas cooling molecular sieve
Cooling zone is taken turns, to restore the adsorption function of runner.
For those skilled in the art, technical solution that can be as described above and design are made other each
Kind is corresponding to be changed and deforms, and all these change and deform the guarantor that should all belong to the utility model claims
Within the scope of shield.
Claims (6)
1. a kind of waste gas recovering device, which is characterized in that including：Heat exchanger, filter, curtain coating section heat exchanger, gas mixing
Area, cooling freezer condenser, gas-liquid separate component, molecular sieve concentration runner, heater and cooler；The molecular sieve concentration turns
Wheel includes cooling zone, renewing zone and treatment region；
The heat exchanger, filter and gas mixing zone are sequentially communicated and form imidization exhaust gas treatment unit；
The curtain coating section heat exchanger, gas mixing zone, cooling freezer condenser, gas-liquid separate component, molecular sieve concentration runner
Treatment region is connected with heat exchanger and forms mixed gas processing unit；
The heat exchanger, heater, molecular sieve concentration runner renewing zone, cooler and gas mixing zone are sequentially communicated and form and add
Hot recycling unit；
The molecular sieve concentration runner cooling zone and gas mixing zone are sequentially communicated and form cooling unit.
2. waste gas recovering device as described in claim 1, which is characterized in that the heat exchanger includes First Heat Exchanger and second
Heat exchanger；
The First Heat Exchanger, the second heat exchanger, filter and gas mixing zone are sequentially communicated and form imidization exhaust-gas treatment
Unit；
The curtain coating section heat exchanger, gas mixing zone, cooling freezer condenser, gas-liquid separate component, molecular sieve concentration runner
Treatment region and the second heat exchanger are connected and form mixed gas processing unit；
Second heat exchanger, First Heat Exchanger, heater, molecular sieve concentration runner renewing zone, cooler and gas mixing zone
It is sequentially communicated and forms heating regeneration unit；
The molecular sieve concentration runner cooling zone and gas mixing zone are sequentially communicated and form cooling unit.
3. waste gas recovering device as described in claim 1, which is characterized in that at least two filterings are equipped in the filter
Net, at least two filter screen are arranged according to ventilation direction, and the mesh number of mesh is gradually increased according to ventilation direction.
4. waste gas recovering device as described in claim 1, which is characterized in that the cooling freezer condenser is included according to ventilation side
To the first circulation cooling water heat exchanger, second circulation cooling water heat exchanger and circulating frozen water- to-water heat exchanger of connection.
5. waste gas recovering device as described in claim 1, which is characterized in that in mixed gas processing unit, the heat exchanger
Outlet side be equipped with treatment region frequency control wind turbine.
6. waste gas recovering device as described in claim 1, which is characterized in that in cooling unit, the molecular sieve concentration runner
The outlet side of cooling zone is equipped with cooling zone frequency control wind turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721303412.8U CN207478233U (en) | 2017-09-30 | 2017-09-30 | A kind of waste gas recovering device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721303412.8U CN207478233U (en) | 2017-09-30 | 2017-09-30 | A kind of waste gas recovering device |
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| Publication Number | Publication Date |
|---|---|
| CN207478233U true CN207478233U (en) | 2018-06-12 |
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ID=62479708
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| CN201721303412.8U Expired - Fee Related CN207478233U (en) | 2017-09-30 | 2017-09-30 | A kind of waste gas recovering device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107715645A (en) * | 2017-09-30 | 2018-02-23 | 广州市鑫衡运科技有限公司 | A kind of waste gas recovering device and gas recovery method |
| CN109489460A (en) * | 2018-11-27 | 2019-03-19 | 重庆大学 | A kind of ash-laden gas stage purification residual neat recovering system and dedusting store heat-exchanger rig |
-
2017
- 2017-09-30 CN CN201721303412.8U patent/CN207478233U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107715645A (en) * | 2017-09-30 | 2018-02-23 | 广州市鑫衡运科技有限公司 | A kind of waste gas recovering device and gas recovery method |
| CN109489460A (en) * | 2018-11-27 | 2019-03-19 | 重庆大学 | A kind of ash-laden gas stage purification residual neat recovering system and dedusting store heat-exchanger rig |
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Effective date of registration: 20180730 Address after: 510000 Dongguan Zhuang Road, Tianhe District, Guangzhou, Guangdong 110 Patentee after: Li Hanyi Address before: 510000 Room 303, 3rd floor, 8 Titian street, Tang Xi, Baiyun District, Guangzhou, Guangdong Patentee before: Guangzhou Xinheng Transport Technology Co., Ltd. |
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