CN110013757A - The Combined type safety processing unit and method of the hydrogeneous periodic off-gases of aromatic hydrogenation system - Google Patents
The Combined type safety processing unit and method of the hydrogeneous periodic off-gases of aromatic hydrogenation system Download PDFInfo
- Publication number
- CN110013757A CN110013757A CN201810019300.2A CN201810019300A CN110013757A CN 110013757 A CN110013757 A CN 110013757A CN 201810019300 A CN201810019300 A CN 201810019300A CN 110013757 A CN110013757 A CN 110013757A
- Authority
- CN
- China
- Prior art keywords
- gases
- periodic
- hydrogenation system
- hydrogeneous
- aromatic hydrogenation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- 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
-
- 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
- B01D53/26—Drying gases or vapours
-
- 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
-
- 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
- B01D2257/00—Components to be removed
- B01D2257/10—Single element gases other than halogens
- B01D2257/108—Hydrogen
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
Abstract
The present invention relates to the Combined type safety processing units and method of a kind of hydrogeneous periodic off-gases of aromatic hydrogenation system, and safety is poor caused by mainly solving the problems, such as hydrogenated tail gas direct emission in the prior art.The present invention by using a kind of hydrogeneous periodic off-gases of aromatic hydrogenation system Combined type safety processing unit and method, aromatic hydrogenation system periodic off-gases are after gas-liquid separator separates, gas phase enters VOC absorber, and the periodic off-gases by absorption enter back into hydrogen treat device, final qualified discharge；Active carbon fiber in the VOC absorber, the aromatic hydrocarbons in periodic off-gases is adsorbed, hydrogen treat device is low-temperature catalytic oxidation reactor, and reactor inlet is designed using venturi type, the technical solution that gas access is equipped with back-fire relief silk screen preferably solves the above problem, can be used for handling in hydrogeneous periodic off-gases.
Description
Technical field
The present invention relates to the Combined type safety processing units and method of a kind of hydrogeneous periodic off-gases of aromatic hydrogenation system.
Background technique
Hydrogenation process is common technology type in Chemical Manufacture, and majority participates in reaction using hydrogen, itself is had higher
Risk, meanwhile, the vent gas treatment after reaction often contains hydrogen, it may have certain risk.It is hydrocracked equal refinery technique
Tail hydrogen take the mode that cycle utilizes, and the lesser chemical plant installations of scale often direct emission is required with safety and environmental protection
It improves, needs to propose a kind of safe hydrogenated tail gas processing technique.In hydrogen peroxide production process, a large amount of aromatic hydrocarbons are used
And production medium of the anthraquinone type organic as hydrogen peroxide, the first step of production is exactly hydrogenation, in traditional mode of production work
In skill, general direct emission in hydrogenated tail gas, both having there is security risk, there is also environmental issues.Also there is patent to refer to hydrogen in recent years
The method of gas reuse, such as a kind of hydrogenation apparatus of CN201520803287.1- and a kind of system for producing hydrogen peroxide and
The CN106629622A- a kind of method for hydrogenation and hydrogenation apparatus of hydrogeneous anthraquinone working solution, but these patents are only referred to hydrogen and return
With being not directed to the safe handling of periodic off-gases when must discharge.This patent proposes a kind of for aromatic hydrocarbons system hydrogenation periodic off-gases
The system of safe handling can ensure the safety of vent gas treatment operation.
Summary of the invention
The first technical problem to be solved by the present invention is safety caused by hydrogenated tail gas direct emission in the prior art
Property poor problem, a kind of Combined type safety processing unit of new hydrogeneous periodic off-gases of aromatic hydrogenation system is provided, there is safety
The preferable advantage of property.The second technical problem to be solved by the present invention is to provide a kind of corresponding with one of the technical issues of solution
The hydrogeneous periodic off-gases of aromatic hydrogenation system Combined type safety processing method.
One of in order to solve the above problem, it speeds to put The technical solution adopted by the invention is as follows: a kind of aromatic hydrogenation system is hydrogeneous
The Combined type safety processing unit of gas, aromatic hydrogenation system periodic off-gases feeding line are connected with gas-liquid separator, gas-liquid separator
Top gas phase outlet line is connected with VOC absorber, and VOC absorber outlet line is connected with hydrogen treat device, at the hydrogen
Reason device is low-temperature catalytic oxidation reactor, and reactor inlet is designed using venturi type, and gas access is equipped with back-fire relief silk screen.
In order to solve the above problem two, it speeds to put The technical solution adopted by the invention is as follows: a kind of aromatic hydrogenation system is hydrogeneous
The Combined type safety processing method of gas, for aromatic hydrogenation system periodic off-gases after gas-liquid separator separates, gas phase enters VOC (volatilization
Property organic matter) absorber, the periodic off-gases by absorption enter back into hydrogen treat device, final qualified discharge；In the VOC absorber
Active carbon fiber adsorbs the aromatic hydrocarbons in periodic off-gases.
In above-mentioned technical proposal, it is preferable that VOC adsorber feed mouth is equipped with feed distributor, and distributor uses sieve pore
Formula structure, the sieve pore gross area are not less than the sectional area of suction line.
In above-mentioned technical proposal, it is preferable that aromatic hydrocarbons volume content is 5~7% in aromatic hydrogenation system periodic off-gases；VOC inhales
The VOC volume content of adnexa outlet is 0.05~0.5%.
In above-mentioned technical proposal, it is preferable that condensate drain section is arranged in low-temperature catalytic oxidation reactor lower part pipeline, periodically drains,
And liquidometer is set, pass through liquid level change monitoring catalytic oxidation situation.
In above-mentioned technical proposal, it is preferable that the hydrogen volume score in aromatic hydrogenation system periodic off-gases is 5~30%.
In above-mentioned technical proposal, it is preferable that the operating condition of VOC absorber be 10~40 DEG C of temperature, pressure 0.1~
0.5MPa, 300~1000h of air speed-1。
In above-mentioned technical proposal, it is preferable that the hydrogen volume score in hydrogen treat device exit gas is 0.1~2%.
In above-mentioned technical proposal, it is preferable that VOC absorber outlet line installs VOC in-line analyzer, monitors its content,
Switch absorber if when standard is not achieved.
In above-mentioned technical proposal, it is preferable that the operating condition of low-temperature catalytic oxidation reactor is 10~40 DEG C of temperature, pressure
0.1~0.5MPa, 300~1000h of air speed-1。
The present invention provides safe and reliable control and operating method for the processing of the hydrogenated tail gas of system containing aromatic hydrocarbons, can be effective
Prevent hydrogenated tail gas fires and carries secretly aromatic hydrocarbons material bring environmental issue, and the whole peace of hydrogenation process process is effectively ensured
Entirely, preferable technical effect is achieved.
Detailed description of the invention
Fig. 1 is the flow diagram of the method for the invention.
In Fig. 1,1. gas-liquid separator 2.VOC absorber, 3. hydrogen reactor 4.VOC content analyzer, 5. signal adapter
6. 7. switch valve of switch valve, 8. liquid level detector, 9. aromatic hydrogenation system periodic off-gases.
The present invention will be further described below by way of examples, but is not limited only to the present embodiment.
Specific embodiment
[embodiment 1]
A kind of Combined type safety processing method of the hydrogeneous periodic off-gases of aromatic hydrogenation system, as shown in Figure 1, aromatic hydrogenation system
For periodic off-gases after gas-liquid separator separates, gas phase enters VOC absorber, and the periodic off-gases by absorption enter back into hydrogen treat device,
Final qualified discharge；Active carbon fiber in the VOC absorber, adsorbs the aromatic hydrocarbons in periodic off-gases, and hydrogen treat device is low temperature
Catalyst oxidation reactor, reactor inlet are designed using venturi type, and gas access is equipped with back-fire relief silk screen.
The operating condition of VOC absorber is 10 DEG C of temperature, pressure 0.1MPa, air speed 300h-1.Aromatic hydrogenation system periodic off-gases
Middle aromatic hydrocarbons volume content is 5%；VOC adsorber feed mouth is equipped with feed distributor, and distributor uses sieve mesh type structure, sieve pore
The gross area is not less than the sectional area of suction line.VOC absorber outlet line installs VOC in-line analyzer, monitors its content, if
Then switch absorber when standard is not achieved.The VOC volume content of VOC absorber outlet is 0.05%.
Condensate drain section is arranged in low-temperature catalytic oxidation reactor lower part pipeline, periodically drains, and set liquidometer, is changed by liquid level
Monitor catalytic oxidation situation.The operating condition of low-temperature catalytic oxidation reactor is 10 DEG C of temperature, pressure 0.1MPa, air speed
300h-1。
Hydrogen volume score in aromatic hydrogenation system periodic off-gases is 5%.Hydrogen in hydrogen treat device exit gas
Fraction is 0.1%.
[embodiment 2]
A kind of Combined type safety processing method of the hydrogeneous periodic off-gases of aromatic hydrogenation system, as shown in Figure 1, aromatic hydrogenation system
For periodic off-gases after gas-liquid separator separates, gas phase enters VOC absorber, and the periodic off-gases by absorption enter back into hydrogen treat device,
Final qualified discharge；Active carbon fiber in the VOC absorber, adsorbs the aromatic hydrocarbons in periodic off-gases, and hydrogen treat device is low temperature
Catalyst oxidation reactor, reactor inlet are designed using venturi type, and gas access is equipped with back-fire relief silk screen.
The operating condition of VOC absorber is 20 DEG C of temperature, pressure 0.1MPa, air speed 500h-1.Aromatic hydrogenation system periodic off-gases
Middle aromatic hydrocarbons volume content is 5%；VOC adsorber feed mouth is equipped with feed distributor, and distributor uses sieve mesh type structure, sieve pore
The gross area is not less than the sectional area of suction line.VOC absorber outlet line installs VOC in-line analyzer, monitors its content, if
Then switch absorber when standard is not achieved.The VOC volume content of VOC absorber outlet is 0.05%.
Condensate drain section is arranged in low-temperature catalytic oxidation reactor lower part pipeline, periodically drains, and set liquidometer, is changed by liquid level
Monitor catalytic oxidation situation.The operating condition of low-temperature catalytic oxidation reactor is 20 DEG C of temperature, pressure 0.1MPa, air speed
500h-1。
Hydrogen volume score in aromatic hydrogenation system periodic off-gases is 10%.Hydrogen in hydrogen treat device exit gas
Fraction is 0.3%.
[embodiment 3]
A kind of Combined type safety processing method of the hydrogeneous periodic off-gases of aromatic hydrogenation system, as shown in Figure 1, aromatic hydrogenation system
For periodic off-gases after gas-liquid separator separates, gas phase enters VOC absorber, and the periodic off-gases by absorption enter back into hydrogen treat device,
Final qualified discharge；Active carbon fiber in the VOC absorber, adsorbs the aromatic hydrocarbons in periodic off-gases, and hydrogen treat device is low temperature
Catalyst oxidation reactor, reactor inlet are designed using venturi type, and gas access is equipped with back-fire relief silk screen.
The operating condition of VOC absorber is 20 DEG C of temperature, pressure 0.3MPa, air speed 400h-1.Aromatic hydrogenation system periodic off-gases
Middle aromatic hydrocarbons volume content is 5.5%；VOC adsorber feed mouth is equipped with feed distributor, and distributor uses sieve mesh type structure, sieve
The hole gross area is not less than the sectional area of suction line.VOC absorber outlet line installs VOC in-line analyzer, monitors its content,
Switch absorber if when standard is not achieved.The VOC volume content of VOC absorber outlet is 0.1%.
Condensate drain section is arranged in low-temperature catalytic oxidation reactor lower part pipeline, periodically drains, and set liquidometer, is changed by liquid level
Monitor catalytic oxidation situation.The operating condition of low-temperature catalytic oxidation reactor is 20 DEG C of temperature, pressure 0.3MPa, air speed
400h-1。
Hydrogen volume score in aromatic hydrogenation system periodic off-gases is 20%.Hydrogen in hydrogen treat device exit gas
Fraction is 0.6%.
[embodiment 4]
A kind of Combined type safety processing method of the hydrogeneous periodic off-gases of aromatic hydrogenation system, as shown in Figure 1, aromatic hydrogenation system
For periodic off-gases after gas-liquid separator separates, gas phase enters VOC absorber, and the periodic off-gases by absorption enter back into hydrogen treat device,
Final qualified discharge；Active carbon fiber in the VOC absorber, adsorbs the aromatic hydrocarbons in periodic off-gases, and hydrogen treat device is low temperature
Catalyst oxidation reactor, reactor inlet are designed using venturi type, and gas access is equipped with back-fire relief silk screen.
The operating condition of VOC absorber is 30 DEG C of temperature, pressure 0.4MPa, air speed 800h-1.Aromatic hydrogenation system periodic off-gases
Middle aromatic hydrocarbons volume content is 5.5%；VOC adsorber feed mouth is equipped with feed distributor, and distributor uses sieve mesh type structure, sieve
The hole gross area is not less than the sectional area of suction line.VOC absorber outlet line installs VOC in-line analyzer, monitors its content,
Switch absorber if when standard is not achieved.The VOC volume content of VOC absorber outlet is 0.3%.
Condensate drain section is arranged in low-temperature catalytic oxidation reactor lower part pipeline, periodically drains, and set liquidometer, is changed by liquid level
Monitor catalytic oxidation situation.The operating condition of low-temperature catalytic oxidation reactor is 30 DEG C of temperature, pressure 0.4MPa, air speed
800h-1。
Hydrogen volume score in aromatic hydrogenation system periodic off-gases is 30%.Hydrogen in hydrogen treat device exit gas
Fraction is 2%.
[embodiment 5]
A kind of Combined type safety processing method of the hydrogeneous periodic off-gases of aromatic hydrogenation system, as shown in Figure 1, aromatic hydrogenation system
For periodic off-gases after gas-liquid separator separates, gas phase enters VOC absorber, and the periodic off-gases by absorption enter back into hydrogen treat device,
Final qualified discharge；Active carbon fiber in the VOC absorber, adsorbs the aromatic hydrocarbons in periodic off-gases, and hydrogen treat device is low temperature
Catalyst oxidation reactor, reactor inlet are designed using venturi type, and gas access is equipped with back-fire relief silk screen.
The operating condition of VOC absorber is 40 DEG C of temperature, pressure 0.5MPa, air speed 1000h-1.Aromatic hydrogenation system speeds to put
Aromatic hydrocarbons volume content is 7% in gas；VOC adsorber feed mouth is equipped with feed distributor, and distributor uses sieve mesh type structure, sieve
The hole gross area is not less than the sectional area of suction line.VOC absorber outlet line installs VOC in-line analyzer, monitors its content,
Switch absorber if when standard is not achieved.The VOC volume content of VOC absorber outlet is 0.5%.
Condensate drain section is arranged in low-temperature catalytic oxidation reactor lower part pipeline, periodically drains, and set liquidometer, is changed by liquid level
Monitor catalytic oxidation situation.The operating condition of low-temperature catalytic oxidation reactor is 40 DEG C of temperature, pressure 0.5MPa, air speed
1000h-1。
Hydrogen volume score in aromatic hydrogenation system periodic off-gases is 30%.Hydrogen in hydrogen treat device exit gas
Fraction is 1.7%.
Obviously, using method of the invention, the hydrogen content in hydrogeneous periodic off-gases can be reduced to 0.1%, effectively
It ensure that discharge safety, and environmental protection, there is biggish technical advantage.
Claims (10)
1. a kind of Combined type safety processing unit of the hydrogeneous periodic off-gases of aromatic hydrogenation system, aromatic hydrogenation system periodic off-gases feed pipe
Line is connected with gas-liquid separator, and gas-liquid separator top gas phase outlet line is connected with VOC absorber, VOC absorber outlet
Line is connected with hydrogen treat device, and the hydrogen treat device is low-temperature catalytic oxidation reactor, and reactor inlet uses venturi type
Design, gas access are equipped with back-fire relief silk screen.
2. a kind of Combined type safety processing method of the hydrogeneous periodic off-gases of aromatic hydrogenation system, aromatic hydrogenation system periodic off-gases are through gas-liquid
After separator separation, gas phase enters VOC absorber, and the periodic off-gases by absorption enter back into hydrogen treat device, final qualified discharge；
Active carbon fiber in the VOC absorber adsorbs the aromatic hydrocarbons in periodic off-gases.
3. the Combined type safety processing method of the hydrogeneous periodic off-gases of aromatic hydrogenation system according to claim 2, it is characterised in that
VOC adsorber feed mouth is equipped with feed distributor, and distributor uses sieve mesh type structure, and the sieve pore gross area is not less than suction line
Sectional area.
4. the Combined type safety processing method of the hydrogeneous periodic off-gases of aromatic hydrogenation system according to claim 2, it is characterised in that
Aromatic hydrocarbons volume content is 5~7% in aromatic hydrogenation system periodic off-gases；VOC absorber outlet VOC volume content be 0.05~
0.5%.
5. according to claim 1, the Combined type safety processing method of the 2 hydrogeneous periodic off-gases of aromatic hydrogenation system, feature exist
Condensate drain section is set in low-temperature catalytic oxidation reactor lower part pipeline, periodically drains, and set liquidometer, is urged by liquid level change monitoring
Oxidation situation.
6. the Combined type safety processing method of the hydrogeneous periodic off-gases of aromatic hydrogenation system according to claim 2, it is characterised in that
Hydrogen volume score in aromatic hydrogenation system periodic off-gases is 5~30%.
7. the Combined type safety processing method of the hydrogeneous periodic off-gases of aromatic hydrogenation system according to claim 2, it is characterised in that
The operating condition of VOC absorber is 10~40 DEG C of temperature, 0.1~0.5MPa of pressure, 300~1000h of air speed-1。
8. the Combined type safety processing method of the hydrogeneous periodic off-gases of aromatic hydrogenation system according to claim 2, it is characterised in that
Hydrogen volume score in hydrogen treat device exit gas is 0.1~2%.
9. the Combined type safety processing method of the hydrogeneous periodic off-gases of aromatic hydrogenation system according to claim 2, it is characterised in that
VOC absorber outlet line install VOC in-line analyzer, monitor its content, when standard is not achieved if switch absorber.
10. wanting the Combined type safety processing method of 1, the 2 hydrogeneous periodic off-gases of aromatic hydrogenation system according to right, it is characterised in that
The operating condition of low-temperature catalytic oxidation reactor is 10~40 DEG C of temperature, 0.1~0.5MPa of pressure, 300~1000h of air speed-1。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810019300.2A CN110013757A (en) | 2018-01-09 | 2018-01-09 | The Combined type safety processing unit and method of the hydrogeneous periodic off-gases of aromatic hydrogenation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810019300.2A CN110013757A (en) | 2018-01-09 | 2018-01-09 | The Combined type safety processing unit and method of the hydrogeneous periodic off-gases of aromatic hydrogenation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110013757A true CN110013757A (en) | 2019-07-16 |
Family
ID=67187781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810019300.2A Pending CN110013757A (en) | 2018-01-09 | 2018-01-09 | The Combined type safety processing unit and method of the hydrogeneous periodic off-gases of aromatic hydrogenation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110013757A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6790802B1 (en) * | 2001-11-05 | 2004-09-14 | Uop Llc | Cyclic catalyst regeneration process using adsorption and desorption on vent stream |
| CN101195080A (en) * | 2006-12-09 | 2008-06-11 | 中国科学院兰州化学物理研究所 | Method for eliminating carbon monoxide and hydrogen gas by catalysis in aerobic condition |
| CN101306293A (en) * | 2007-11-05 | 2008-11-19 | 山东洪业化工集团有限公司 | End gas treating method of cyclohexanone production system |
| CN202638033U (en) * | 2012-07-06 | 2013-01-02 | 莱芜钢铁集团有限公司 | Benzene hydrogenation tail gas treatment smoke abatement device |
| CN103131466A (en) * | 2011-11-25 | 2013-06-05 | 中国石油天然气股份有限公司 | Aromatic hydrocarbon-rich wax oil hydrotreating method |
-
2018
- 2018-01-09 CN CN201810019300.2A patent/CN110013757A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6790802B1 (en) * | 2001-11-05 | 2004-09-14 | Uop Llc | Cyclic catalyst regeneration process using adsorption and desorption on vent stream |
| CN101195080A (en) * | 2006-12-09 | 2008-06-11 | 中国科学院兰州化学物理研究所 | Method for eliminating carbon monoxide and hydrogen gas by catalysis in aerobic condition |
| CN101306293A (en) * | 2007-11-05 | 2008-11-19 | 山东洪业化工集团有限公司 | End gas treating method of cyclohexanone production system |
| CN103131466A (en) * | 2011-11-25 | 2013-06-05 | 中国石油天然气股份有限公司 | Aromatic hydrocarbon-rich wax oil hydrotreating method |
| CN202638033U (en) * | 2012-07-06 | 2013-01-02 | 莱芜钢铁集团有限公司 | Benzene hydrogenation tail gas treatment smoke abatement device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102913918B (en) | Catalytic combustion processing method of high-concentration organic exhaust gas | |
| CN110092004B (en) | Combined oxygen consumption type and molecular sieve type fuel tank inerting device | |
| CN206868010U (en) | A kind of safety device for VOCs Treatment process | |
| CN104628059B (en) | The device of continuous supercritical water gasification dimazine spent liquor | |
| CN208700568U (en) | The purification devices of ultra-pure hydrogen in production of polysilicon | |
| CN102423601B (en) | Tail gas treatment device for cyclohexane oxidation system and treatment method thereof | |
| CN110013757A (en) | The Combined type safety processing unit and method of the hydrogeneous periodic off-gases of aromatic hydrogenation system | |
| CN104073311B (en) | Methane purification purification system | |
| CN110013733A (en) | Aromatic hydrogenation system periodic off-gases VOC absorption and tail hydrogen secure processing device and method | |
| CN217163845U (en) | Cyclohexanol dehydrogenation tail gas treatment equipment | |
| CN109200616B (en) | Method for treating tail gas in hydrogen peroxide production process | |
| CN115341226A (en) | Pretreatment method for preparing ultrapure hydrogen | |
| CN110013735B (en) | Safe adsorption treatment device and method for hydrogen-containing purge gas | |
| CN214612673U (en) | Waste argon recycling device of cold rolling annealing furnace protective gas supply system | |
| CN115232645A (en) | Refining process and equipment for recovering hydrochloric acid in chlorinated paraffin production process | |
| CN105895183B (en) | Carbon containing 14 waste gas processing method and system | |
| CN108862205A (en) | A kind of dioxygen water preparation apparatus | |
| CN106082145B (en) | The device and method that nitrogen is collected from cyclohexane oxidation off-gas | |
| CN106831304A (en) | A kind of method and device for improving catalysis drying gas ethylbenzene efficiency | |
| CN205933230U (en) | Collect device of nitrogen gas in follow cyclohexane oxidation tail gas | |
| CN205435373U (en) | Device of organic gas resource recovery processing | |
| CN110013758A (en) | Hydrogenated tail gas safe reuse and processing method in hydrogenation apparatus | |
| CN203971695U (en) | Mixture pressure water elution sublimate system | |
| CN220779679U (en) | Tail gas damage system for gaseous phosgene preparation | |
| CN211393847U (en) | Hydrogen chloride gas purifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190716 |