CN104128064A - Process and device for treating petroleum ether-containing waste gas generated in ibuprofen synthesis process - Google Patents
Process and device for treating petroleum ether-containing waste gas generated in ibuprofen synthesis process Download PDFInfo
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- CN104128064A CN104128064A CN201410385831.5A CN201410385831A CN104128064A CN 104128064 A CN104128064 A CN 104128064A CN 201410385831 A CN201410385831 A CN 201410385831A CN 104128064 A CN104128064 A CN 104128064A
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- benzinum
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- petroleum ether
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- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 56
- 239000002912 waste gas Substances 0.000 title claims abstract description 31
- 239000003208 petroleum Substances 0.000 title claims abstract description 21
- HEFNNWSXXWATRW-UHFFFAOYSA-N Ibuprofen Chemical compound CC(C)CC1=CC=C(C(C)C(O)=O)C=C1 HEFNNWSXXWATRW-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 230000008569 process Effects 0.000 title claims abstract description 15
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 13
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 13
- 229960001680 ibuprofen Drugs 0.000 title abstract 3
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 59
- 239000007789 gas Substances 0.000 claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000000926 separation method Methods 0.000 claims abstract description 15
- 238000003860 storage Methods 0.000 claims abstract description 14
- 238000004064 recycling Methods 0.000 claims abstract description 11
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 83
- 239000000243 solution Substances 0.000 claims description 10
- 239000003518 caustics Substances 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 8
- 239000003513 alkali Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 230000008929 regeneration Effects 0.000 claims 1
- 238000011069 regeneration method Methods 0.000 claims 1
- 239000002440 industrial waste Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005406 washing Methods 0.000 abstract 3
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 11
- 239000007921 spray Substances 0.000 description 6
- 238000011084 recovery Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- XMIIGOLPHOKFCH-UHFFFAOYSA-N 3-phenylpropionic acid Chemical compound OC(=O)CCC1=CC=CC=C1 XMIIGOLPHOKFCH-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical group C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229960001760 dimethyl sulfoxide Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Substances OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000041 non-steroidal anti-inflammatory agent Substances 0.000 description 1
- 229940021182 non-steroidal anti-inflammatory drug Drugs 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000007170 pathology Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to a process and a device for treating petroleum ether-containing waste gas generated in the ibuprofen synthesis process and an effective method for recycling petroleum ether generated in the production process by use of the device. The device comprises the following components: a gas inlet (1), an alkaline washing tower (2), an alkaline liquid storage tank (3), a capturing tower (4), a capturing agent storage tank (5), a preheater (6), a separation unit (7), a capturing agent recycling tank (8) and a petroleum ether storage tank (9). A method for removing the petroleum ether in the industrial waste gas by use of the capturing device comprises the following steps: the petroleum ether-containing waste gas is introduced into the alkaline washing tower by a blower and is subjected to alkaline washing to obtain purified petroleum ether gas; the purified petroleum ether gas is introduced into the capturing tower, a capturing agent is introduced into the capturing tower in which the petroleum ether gas is captured by use of the capturing agent so as to obtain mixed liquid of the petroleum ether and the capturing agent, the obtained mixed liquid of the petroleum ether and the capturing agent is treated by adopting a separation process, the petroleum ether and the capturing agent can be effectively separated in the separation unit (7), the petroleum ether is extracted from the top of the tower, and capturing liquid is extracted from the bottom of the tower; the obtained capturing liquid enters the capturing tower in a circulating manner for achieving the cyclic utilization of the capturing agent. The technical method for capturing the petroleum ether in the ibuprofen synthesis process is economic and environmentally-friendly.
Description
Technical field
The invention belongs to pharmaceutical industry separation and purification field, relate to a kind of a kind of method containing the seizure of benzinum waste gas and separating of agent for capturing and benzinum, particularly trap setting and this device seizure pharmaceuticals industry waste gas PetroChina Company Limited. ether of use.
Background technology
Along with China's industrialization degree improves constantly, national economy develops rapidly, and the ecological environment that industrial activity is depended on for existence on us has produced serious impact.Be that resource utilization is low on the one hand, cause the serious waste of resource; Be that pollutant discharges in a large number on the other hand, cause the destruction of ecological environment, have or even catastrophic failure, people's normal life in the deterioration serious threat of the waste of resource and environment, directly has influence on the sustainable development of China's economy.Improve resource utilization, reduce disposal of pollutants, the environmental protection that exploiting economy is feasible and utilization of waste as resource technology, develop a circular economy, and structure resources conservation, friendly environment society are had important practical significance.
Atmosphere pollution is one of at present the most outstanding environmental problem of China, and industrial waste gas is an important sources of atmosphere pollution.Large capacity industrial waste gas enters atmosphere, and environmental quality is declined, and brings serious harm to health.Organic exhaust gas in industrial waste gas enters after human body by respiratory tract and skin, can cause temporary and permanent pathology to organs and systems such as people's breathing, blood, livers, its composition mainly comprises various hydro carbons, alcohols, aldehydes, acids, ketone and amine etc., these dusty gas particle diameters are little, concentration is high, easy enrichment, and the exploitation of economically viable treatment process has great significance to the improvement of dusty gas.Brufen is phenylpropionic acid NSAIDs, has the advantages such as the good and side effect of result for the treatment of is little.Brufen, since late 1970s listing, has obtained fast development, in extensive use all over the world.And in brufen synthesis procedure, there is a large amount of waste gas containing benzinum, this waste gas PetroChina Company Limited. ether content is high, if direct discharge must cause the problem such as pollution and the wasting of resources of atmospheric environment.
Administer the commonplace method of organic exhaust gas both at home and abroad and mainly contain two classes: a class is absorption method.This method is to pass through physical method, under uniform temperature, pressure, carry out separation of VOCs (VOCs) by the method such as selective absorbent and permoselective membrane, mainly comprise active carbon adsorption, pressure-variable adsorption, condensation method and biomembrance process etc.; Another kind of is null method.This method is by chemistry or biological respinse, uses up, organic matter is converted into water and carbon dioxide by heat, catalyst and microorganism etc., mainly comprises thermal oxide, catalytic combustion, biological oxidation, corona method, plasma decomposes method, light decomposition method etc.
The agent for capturing that the present invention filters out can remove the benzinum in brufen synthesis procedure efficiently, and reduction energy consumption, waste gas PetroChina Company Limited. ether is reclaimed to resource, and this technology has the outstanding advantages such as organic efficiency is high, operating cost is low, equipment investment expense is few, maintenance period is long.。
Summary of the invention
[technical problem that will solve]
The object of this invention is to provide a kind of technique and device containing benzinum waste gas in brufen synthesis procedure of processing
Another object of the present invention is to provide the method that uses described device to catch waste gas PetroChina Company Limited. ether.
[technical scheme]
The present invention overcomes shortcoming in prior art, a kind of technique and device containing benzinum waste gas in brufen synthesis procedure of processing proposed, carry and encircleed stable except the serialization catch process route containing benzinum waste gas in brufen synthesis procedure, the device of realizing above-mentioned technical process is originally provided.The present invention utilizes the capture device of independent development, screens suitable agent for capturing and catches the benzinum in waste gas.Enter seizure tower containing benzinum waste gas, in tower, agent for capturing catches benzinum, forms and catches liquid.Described seizure liquid is entered to next separative element from catching tower discharge.Isolate benzinum and agent for capturing at separative element.Agent for capturing after separation is used for recycling.The benzinum catch rate of capture unit of the present invention is up to 90%.The present invention filters out several conventional agent for capturing, catches respectively the experiment of benzinum waste gas, has finally determined a kind of agent for capturing A effective, that Stability Analysis of Structures is easy to separation that catches.This agent for capturing to the capturing efficiency of benzinum up to more than 90%.Reduce the air pollution that the discharge of benzinum waste gas causes and saved efficient resource simultaneously.Realize the doulbe-sides' victory of environmental benefit and economic benefit.
The present invention has selected efficient agent for capturing A applicatory, provide a kind of technique simple, be easy to the device of the seizure industrial waste gas PetroChina Company Limited. ether of realizing and use this device to remove the method for industrial waste gas PetroChina Company Limited. ether.
The present invention is achieved through the following technical solutions: a kind of seizure removes the device of industrial waste gas PetroChina Company Limited. ether, it is characterized in that this device comprises following part:
Air inlet (1); Caustic wash tower (2); Alkali lye storage tank (3); Catch tower (4), agent for capturing storage tank (5); Preheater (6); Separative element (7); Agent for capturing recycling can (8); Benzinum storage tank (9), according to another preferred embodiment of the present invention, is characterized in that the method comprises the steps:
(1) waste gas containing benzinum is passed into caustic wash tower through air blast, obtain pure benzinum gas through alkali cleaning; (2) pure benzinum gas is passed into seizure tower;
(3) agent for capturing passes into seizure tower, and in tower, agent for capturing catches benzinum gas, obtains the mixed solution of benzinum and agent for capturing;
(4) after benzinum catches completely, the mixed liquor at the bottom of tower is passed into storage tank, enter into separation circuit;
(5) squeeze into separative element containing the mixed solution of benzinum and seizure liquid through pump, in tower, two kinds of materials effectively separate, overhead extraction benzinum, and at the bottom of tower, extraction catches liquid.The seizure liquid circulation obtaining enters seizure tower, realizes recycling of agent for capturing.
According to another preferred embodiment of the present invention, it is characterized in that: caustic wash tower, seizure tower are atmospheric tower, and it is strong that tower top pressure maintains 0kPa ~ 2kPa(gauge pressure), it is strong that tower bottom pressure maintains 2kPa ~ 20kPa(gauge pressure); Separative element is transformer kiosk, and maintain-100kPa ~ 0kPa(gauge pressure of tower top pressure is strong), maintain-100kPa ~ 2kPa(gauge pressure of tower bottom pressure is strong).
According to another preferred embodiment of the present invention, it is characterized in that: benzinum feeding temperature is 0-80 DEG C, this exhaust-gas treatment amount is 100-2000m
3/ h, waste gas PetroChina Company Limited. ether mass percent is 0.1%-20%, and agent for capturing design maximum stream flow is 0-2000kg/h, processes the seizure tower containing benzinum waste gas, and its effective depth is 3-10m; The effective depth of separative element is 5-15m.
According to another preferred embodiment of the present invention, it is characterized in that: catch the interior temperature 0-100 DEG C of tower of tower, in the tower of separative element, temperature is 0-200 DEG C.
According to another preferred embodiment of the present invention, it is characterized in that: use the method to catch the benzinum in waste gas, catching the concentration containing petroleum ether solution obtaining at the bottom of tower is 1%-3.9%, and benzinum catch rate reaches more than 90%.
Of the present invention containing benzinum waste gas remove technology specifically describe as follows:
Under normal temperature, enter caustic wash tower containing the waste gas of benzinum through air blast, pass into alkali lye and clean benzinum waste gas.Alkali lye is sodium hydroxide solution.Benzinum gas after solution purification passes into benzinum and catches tower material from charging at the bottom of tower, and feeding temperature is 0-80 DEG C.Pure analysis agent for capturing is squeezed into seizure tower through pump.Agent for capturing adopts spray mode to catch benzinum gas.In seizure tower, benzinum gas upwards moves, and agent for capturing moves downwards, in the process at the bottom of the mixed solution forming after agent for capturing contacts with benzinum gas flow to tower, carry out multistage quality transmission, the mixed liquor that benzinum obtains after catching completely enters separation circuit.In separative element, two kinds of materials effectively separate, overhead extraction benzinum, and at the bottom of tower, extraction catches liquid.The seizure liquid circulation obtaining enters seizure tower, realizes recycling of agent for capturing.
[beneficial effect]
The present invention compared with prior art, mainly contains following beneficial effect:
(1) the present invention has improved the removal effect of brufen synthesis procedure PetroChina Company Limited. ether.Adopt this invention can realize efficiently removing of benzinum gas, after the present invention processes, the catch rate of benzinum is up to more than 90%;
(2) the present invention, by efficiently the removing of benzinum, has reduced the processing cost of brufen synthesis procedure containing benzinum industrial waste gas;
(3) the present invention has avoided causing atmosphere pollution containing benzinum toxic emission.The benzinum that the present invention obtains can re-use in chemical reaction link, has reduced the waste of efficient resource in avoiding environmental pollution;
(4) the present invention has reduced the consumption of agent for capturing, has reduced production cost.The present invention in separative element, realizes benzinum and the efficient of agent for capturing separates, and the benzinum of overhead extraction reclaims for subsequent use, and at the bottom of tower, the agent for capturing of extraction is circulated back to seizure tower, realizes recycling of agent for capturing.
Brief description of the drawings
Further illustrate the present invention below in conjunction with the drawings and specific embodiments
Accompanying drawing 1 is schematic flow sheet of the present invention:
In figure: air inlet (1); Caustic wash tower (2); Alkali lye storage tank (3); Catch tower (4), agent for capturing storage tank (5); Preheater (6); Separative element (7); Agent for capturing recycling can (8); Benzinum storage tank (9).
Detailed description of the invention
Below working of an invention case:
embodiment 1:get petroleum ether solution 80 g and pass into seizure tower through air blast, the effective depth that catches tower is 3m, and it is strong that tower top pressure maintains 0kPa(gauge pressure), it is strong that tower bottom pressure maintains 2kPa(gauge pressure).Catch liquid-N methyl pyrrolidone 300g and spray from tower top, in seizure tower, carry out removing of benzinum, feeding temperature is 30 DEG C, catches after a period of time, forms the mixed liquor of benzinum and agent for capturing.Benzinum residue 35g.Benzinum catch rate reaches 56.25%.Mixed liquor, in pump is squeezed into separative element, carries out the efficient separation of benzinum-agent for capturing in separative element, and the effective depth of separative element is 5m, and maintain-80kPa(of tower top pressure gauge pressure is strong), maintain-100kPa(of tower bottom pressure gauge pressure is strong).After separating, the rate of recovery of agent for capturing is 60%.
embodiment 2:get petroleum ether solution 50 g and pass into seizure tower through air blast, the effective depth that catches tower is 5m, and it is strong that tower top pressure maintains 0kPa(gauge pressure), it is strong that tower bottom pressure maintains 1kPa(gauge pressure).Catch liquid-butyl glycol ether 500g and spray from tower top, in seizure tower, carry out removing of benzinum, feeding temperature is 15 DEG C, catches after a period of time, forms the mixed liquor of benzinum and agent for capturing.Benzinum residue 33g.Benzinum catch rate reaches 34%.Mixed liquor, in pump is squeezed into separative element, carries out the efficient separation of benzinum-agent for capturing in separative element, and the effective depth of separative element is 8m, and maintain-80kPa(of tower top pressure gauge pressure is strong), maintain-90kPa(of tower bottom pressure gauge pressure is strong).After separating, the rate of recovery of agent for capturing is 53%.
embodiment 3:get petroleum ether solution 90 g and pass into seizure tower through air blast, the effective depth that catches tower is 6m, and it is strong that tower top pressure maintains 0kPa(gauge pressure), it is strong that tower bottom pressure maintains 1kPa(gauge pressure).Catch liquid-methyl-sulfoxide 400g and spray from tower top, in seizure tower, carry out removing of benzinum, feeding temperature is 25 DEG C, catches after a period of time, forms the mixed liquor of benzinum and agent for capturing.Benzinum residue 55g.Benzinum catch rate reaches 38.9%.Mixed liquor, in pump is squeezed into separative element, carries out the efficient separation of benzinum-agent for capturing in separative element, and the effective depth of separative element is 9m, and maintain-80kPa(of tower top pressure gauge pressure is strong), maintain-90kPa(of tower bottom pressure gauge pressure is strong).After separating, the rate of recovery of agent for capturing is 66%.
embodiment 4:get petroleum ether solution 105 g and pass into seizure tower through air blast, the effective depth that catches tower is 7m, and it is strong that tower top pressure maintains 0kPa(gauge pressure), it is strong that tower bottom pressure maintains 1.5kPa(gauge pressure).Catch liquid-ethylene glycol 550g and spray from tower top, in seizure tower, carry out removing of benzinum, feeding temperature is 38 DEG C, catches after a period of time, forms the mixed liquor of benzinum and agent for capturing.Benzinum residue 73g.Benzinum catch rate reaches 30.5%.Mixed liquor, in pump is squeezed into separative element, carries out the efficient separation of benzinum-agent for capturing in separative element, and the effective depth of separative element is 10m, and maintain-70kPa(of tower top pressure gauge pressure is strong), maintain-90kPa(of tower bottom pressure gauge pressure is strong).After separating, the rate of recovery of agent for capturing is 71%.
embodiment 5:get petroleum ether solution 100 g and pass into seizure tower through air blast, the effective depth that catches tower is 8m, and it is strong that tower top pressure maintains 0kPa(gauge pressure), it is strong that tower bottom pressure maintains 1kPa(gauge pressure).Catch liquid A600g and spray from tower top, in seizure tower, carry out removing of benzinum, feeding temperature is 35 DEG C, catches after a period of time, forms the mixed liquor of benzinum and agent for capturing.Benzinum residue 5g.Benzinum catch rate reaches 95%.Mixed liquor, in pump is squeezed into separative element, carries out the efficient separation of benzinum-agent for capturing A in separative element, and the effective depth of separative element is 13m, and maintain-80kPa(of tower top pressure gauge pressure is strong), maintain-90kPa(of tower bottom pressure gauge pressure is strong).After separating, the rate of recovery of agent for capturing is 91%.
Claims (8)
1. process the device containing benzinum waste gas in brufen synthesis procedure, it is characterized in that this device comprises following part:
Air inlet (1); Caustic wash tower (2); Alkali lye storage tank (3); Catch tower (4); Agent for capturing storage tank (5); Preheater (6); Separative element (7); Agent for capturing recycling can (8); Benzinum storage tank (9).
2. right to use requires the trap setting described in 1 to catch the method containing benzinum waste gas in brufen synthesis procedure, it is characterized in that the method comprises the steps:
(1) benzinum waste gas is passed into caustic wash tower through air blast, obtain pure benzinum gas through alkali cleaning;
(2) pure benzinum gas is passed into seizure tower;
(3) agent for capturing passes into seizure tower, and in tower, agent for capturing catches benzinum gas, obtains the mixed liquor of benzinum and agent for capturing;
(4) after benzinum catches completely, the mixed liquor at the bottom of tower is passed into storage tank, enter into separation circuit;
(5) squeeze into separative element containing the mixed solution of benzinum and seizure liquid through pump, in tower, two kinds of materials effectively separate, overhead extraction benzinum, and at the bottom of tower, extraction catches liquid, and the seizure liquid obtaining circulation enters seizure tower, realizes recycling of agent for capturing.
3. method according to claim 2, is characterized in that: caustic wash tower, seizure tower are atmospheric tower, and it is strong that tower top pressure maintains 0kPa ~ 2kPa(gauge pressure), it is strong that tower bottom pressure maintains 2kPa ~ 20kPa(gauge pressure); Separative element is transformer kiosk, and maintain-100kPa ~ 0kPa(gauge pressure of tower top pressure is strong), maintain-100kPa ~ 2kPa(gauge pressure of tower bottom pressure is strong).
4. method according to claim 3, is characterized in that: the feeding temperature containing benzinum waste gas is 0-80 DEG C, and waste gas PetroChina Company Limited. ether mass percent is 0.1%-20%.
5. method according to claim 3, is characterized in that: process the seizure tower containing benzinum waste gas, its effective depth is 3-10m; The effective depth of separative element is 5-15m.
6. method according to claim 3, is characterized in that: catch Ta Tanei temperature 0-100 DEG C, in the tower of separative element, temperature is 0-200 DEG C.
7. method according to claim 3, is characterized in that: use the method to catch the benzinum in waste gas, catching the concentration containing petroleum ether solution obtaining at the bottom of tower is 1%-3.9%, and benzinum catch rate reaches more than 90%.
8. method according to claim 3, is characterized in that: after this PROCESS FOR TREATMENT, the regeneration rate of agent for capturing, up to more than 90%, can effectively be realized recycling of agent for capturing.
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| CN105001050A (en) * | 2015-05-06 | 2015-10-28 | 青岛科技大学 | Recovery processing method for methyl alcohol and ethyl alcohol in carboxymethyl cellulose flash distillation tail gas |
| CN105001051A (en) * | 2015-05-13 | 2015-10-28 | 青岛科技大学 | Method for treatment of carboxymethyl cellulose centrifugal tail gas containing ethyl alcohol on basis of heat integration |
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