CN220478503U - High-concentration organic waste gas high-efficiency absorption rectifying device - Google Patents
High-concentration organic waste gas high-efficiency absorption rectifying device Download PDFInfo
- Publication number
- CN220478503U CN220478503U CN202420097096.7U CN202420097096U CN220478503U CN 220478503 U CN220478503 U CN 220478503U CN 202420097096 U CN202420097096 U CN 202420097096U CN 220478503 U CN220478503 U CN 220478503U
- Authority
- CN
- China
- Prior art keywords
- absorption tower
- waste gas
- centrifugal extractor
- primary
- pipeline
- 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.)
- Active
Links
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 106
- 239000007789 gas Substances 0.000 title claims abstract description 40
- 239000010815 organic waste Substances 0.000 title claims abstract description 32
- 239000007788 liquid Substances 0.000 claims description 29
- 239000002904 solvent Substances 0.000 claims description 7
- 239000002912 waste gas Substances 0.000 abstract description 13
- 238000000746 purification Methods 0.000 abstract description 7
- 239000003960 organic solvent Substances 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 239000007921 spray Substances 0.000 description 6
- 238000009835 boiling Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 239000012855 volatile organic compound Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- JLTDJTHDQAWBAV-UHFFFAOYSA-N N,N-dimethylaniline Chemical compound CN(C)C1=CC=CC=C1 JLTDJTHDQAWBAV-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Landscapes
- Extraction Or Liquid Replacement (AREA)
Abstract
The utility model relates to the technical field of organic waste gas recovery, in particular to a high-concentration organic waste gas efficient absorption rectifying device. The high-concentration organic waste gas high-efficiency absorption rectifying device comprises a primary absorption tower and an extractant storage tank, wherein the primary absorption tower is connected with a secondary absorption tower through a pipeline, the primary absorption tower is connected with a tertiary centrifugal extractor through a primary circulating pump, the tertiary centrifugal extractor is connected with the secondary absorption tower through a primary centrifugal extractor, the extractant storage tank is connected with the primary centrifugal extractor through an extractant conveying pump, and the secondary absorption tower is connected with the primary absorption tower through a secondary circulating pump. The device utilizes the absorption tower, the extraction principle and the rectification system to absorb, extract and rectify the organic components, thereby not only improving the purification efficiency of the waste gas, but also recycling the organic solvent in the waste gas and greatly improving the utilization rate of the waste gas.
Description
Technical Field
The utility model relates to the technical field of organic waste gas recovery, in particular to a high-concentration organic waste gas efficient absorption rectifying device.
Background
VOCs, volatile organic compounds, are a common class of atmospheric pollutants produced in the industries of paint production, chemical fiber industry, metal coating, chemical coating, shoe and leather making, plywood manufacturing, tire manufacturing, and the like. The harmful volatile organic compounds mainly comprise acetone, toluene, phenol, dimethylaniline, formaldehyde, n-hexane, ethyl acetate, ethanol and the like. The organic waste gas treatment process preferably selects a waste gas purification treatment method with low cost, low energy consumption and no secondary pollution, fully utilizes the waste heat of waste gas and realizes the recycling of resources. Generally, petrochemical enterprises generally adopt methods of condensation, absorption, combustion and the like to purify waste gas due to the high exhaust concentration of the petrochemical enterprises due to the particularity of production activities. And the exhaust gas concentration in the industries of printing and the like is low, and waste gas purification treatment is carried out by adopting methods of adsorption, catalytic combustion and the like.
In the prior art, the most adopted VOCs treatment processes, such as RCO (catalytic heat storage combustion), RTO, CO, TO and other equipment, are thermal oxidation or catalytic oxidation processes, and decompose organic matters into CO 2 And H 2 O, has high purification efficiency, but cannot recover the organic solvent. And the solvent recovered by the activated carbon or zeolite adsorption condensation recovery process is a mixed solvent, and other processes have low purification efficiency and unstable operation.
Disclosure of Invention
According to the defects in the prior art, the utility model aims to provide the high-efficiency absorption rectification device for the high-concentration organic waste gas, which utilizes the absorption tower, the extraction principle and the rectification system to absorb, extract and rectify organic components, so that the purification efficiency of the waste gas is improved, the organic solvent in the waste gas is recycled, and the utilization rate of the waste gas is greatly improved.
The utility model is realized by adopting the following technical scheme:
the high-concentration organic waste gas high-efficiency absorption rectifying device comprises a primary absorption tower and an extractant storage tank, wherein the primary absorption tower is connected with a secondary absorption tower through a pipeline, the primary absorption tower is connected with a tertiary centrifugal extractor through a primary circulating pump, the tertiary centrifugal extractor is connected with the secondary absorption tower through a primary centrifugal extractor, the extractant storage tank is connected with the primary centrifugal extractor through an extractant conveying pump, and the secondary absorption tower is connected with the primary absorption tower through a secondary circulating pump.
The primary absorption tower is connected with an organic waste gas inlet pipeline, the bottom of the primary absorption tower is connected with a primary circulating pump through a pipeline, and the primary circulating pump is connected with the primary absorption tower through a pipeline.
The top of the secondary absorption tower is connected with a gas phase discharge pipeline, the bottom of the secondary absorption tower is connected with a secondary circulating pump through a pipeline, and the secondary circulating pump is connected with the secondary absorption tower through a pipeline.
The first-stage absorption tower and the second-stage absorption tower are provided with an air inlet, an air outlet, a spray opening and a liquid outlet. The air inlet of the primary absorption tower is connected with the organic waste gas inlet pipeline, the air outlet at the top of the primary absorption tower is connected with the air inlet of the secondary absorption tower, the liquid outlet at the bottom of the primary absorption tower is connected with the inlet of the primary circulating pump, and the outlet of the primary circulating pump is connected with the spray outlet of the primary absorption tower.
The three-stage centrifugal extractor is connected with a rectifying tower through a preheater, and the rectifying tower is connected with a reboiler and a solvent tank.
The rectifying tower is connected with a condenser through a preheater, and the condenser is connected with the intermediate tank through a pipeline.
The cold side outlet of the preheater is connected to the spray interface at the upper part of the rectifying tower, the interface at the bottom of the rectifying tower is connected with the cold side inlet of the reboiler, the cold side outlet at the top of the reboiler is connected with the reflux port of the rectifying tower, the hot side inlet of the reboiler is connected with low-pressure steam, and the liquid outlet at the lower part of the rectifying tower is connected with the liquid inlet of the solvent tank.
The intermediate tank is connected with the vacuum pump through the gas-liquid separator, and the intermediate tank is connected with the extractant storage tank through the finished product conveying pump.
A return pipeline is arranged between the secondary circulating pump and the primary absorption tower, and a pipeline for entering the tertiary centrifugal extractor is arranged between the primary circulating pump and the tertiary centrifugal extractor.
And a pipeline for feeding the first-stage centrifugal extractor is arranged between the extractant conveying pump and the first-stage centrifugal extractor, and a second-stage centrifugal extractor is arranged between the third-stage centrifugal extractor and the first-stage centrifugal extractor.
The working principle of the utility model is as follows:
firstly, organic waste gas enters a first-stage absorption tower, most organic components are absorbed after being absorbed by absorption liquid sprayed by a first-stage circulating pump, the organic waste gas enters a second-stage absorption tower again, the absorption liquid sprayed by the second-stage circulating pump is absorbed again, and the rest organic components are absorbed. The secondary circulating pump conveys part of absorption liquid into the primary absorption tower according to the concentration, the primary circulating pump conveys saturated absorption liquid into the tertiary centrifugal extractor according to the concentration, then sequentially enters the secondary centrifugal extractor and the primary centrifugal extractor, the extractor storage tank conveys the extractant into the primary centrifugal extractor through the extractant conveying pump, then sequentially enters the secondary centrifugal extractor and the tertiary centrifugal extractor, the saturated absorption liquid and the extractant are extracted and separated in the centrifugal extractor, the organic components and the extractant enter the preheater, the separated water enters the secondary absorption tower, the organic components and the extractant enter the rectifying tower after the temperature of the preheater rises, flow from top to bottom, enter the bottom of the rectifying tower, the extractant with low boiling point is evaporated into gas in the reboiler, and then enters the preheater for heat exchange and cooling, then the extractant is cooled through the condenser, the extractant is condensed into liquid and enters the intermediate tank, and the vacuum pump pumps the rectifying tower through the gas-liquid separator to reduce the boiling point of the extractant. When the liquid in the intermediate tank reaches a certain liquid level, the condensed extractant is conveyed into the extractant storage tank through the finished product conveying pump. Wherein, the first-stage absorption tower and the second-stage absorption tower are provided with an air inlet, an air outlet, a spray opening and a liquid outlet. The air inlet of the primary absorption tower is connected with the organic waste gas inlet pipeline, the air outlet at the top of the primary absorption tower is connected with the air inlet of the secondary absorption tower, the liquid outlet at the bottom of the primary absorption tower is connected with the inlet of the primary circulating pump, and the outlet of the primary circulating pump is connected with the spray outlet of the primary absorption tower.
Compared with the prior art, the utility model has the beneficial effects that:
by adopting the high-concentration organic waste gas high-efficiency absorption rectification device, the absorption tower, the extraction principle and the rectification system are utilized to absorb, extract and rectify organic components, so that the purification efficiency of waste gas is improved, the organic solvent in the waste gas is recovered, and the utilization rate of the waste gas is greatly improved.
Drawings
FIG. 1 is a schematic structural diagram of a high-concentration organic waste gas efficient absorption rectification device of the utility model;
in the figure: 1. a first-stage absorption tower; 2. a primary circulation pump; 3. a secondary absorption tower; 4. a secondary circulation pump; 5. a first-stage centrifugal extractor; 6. a secondary centrifugal extractor; 7. a three-stage centrifugal extractor; 8. an extractant storage tank; 9. an extractant delivery pump; 10. a preheater; 11. a rectifying tower; 12. a reboiler; 13. a condenser; 14. an intermediate tank; 15. a gas-liquid separator; 16. a vacuum pump; 17. a finished product conveying pump; 18. organic waste gas enters the pipeline; 19. a gas phase discharge line; 20. feeding into a three-stage centrifugal extractor pipeline; 21. feeding into a first-stage centrifugal extractor pipeline; 22. a return conduit; 23. a solvent tank.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings, in order to make the objects and technical solutions of the present utility model more apparent.
Example 1
As shown in figure 1, the high-concentration organic waste gas high-efficiency absorption rectifying device comprises a primary absorption tower 1 and an extractant storage tank 8, wherein the primary absorption tower 1 is connected with a secondary absorption tower 3 through a pipeline, the primary absorption tower 1 is connected with a tertiary centrifugal extractor 7 through a primary circulating pump 2, the tertiary centrifugal extractor 7 is connected with the secondary absorption tower 3 through a primary centrifugal extractor 5, the extractant storage tank 8 is connected with the primary centrifugal extractor 5 through an extractant conveying pump 9, and the secondary absorption tower 3 is connected with the primary absorption tower 1 through a secondary circulating pump 4. The primary absorption tower 1 is connected with an organic waste gas inlet pipeline 18, the bottom of the primary absorption tower 1 is connected with the primary circulating pump 2 through a pipeline, and the primary circulating pump 2 is connected with the primary absorption tower 1 through a pipeline. The top of the secondary absorption tower 3 is connected with a gas phase discharge pipeline 19, the bottom of the secondary absorption tower 3 is connected with a secondary circulating pump 4 through a pipeline, and the secondary circulating pump 4 is connected with the secondary absorption tower 3 through a pipeline. The three-stage centrifugal extractor 7 is connected with a rectifying tower 11 through a preheater 10, and the rectifying tower 11 is connected with a reboiler 12 and a solvent tank 23. The rectifying column 11 is connected to a condenser 13 through a preheater 10, and the condenser 13 is connected to an intermediate tank 14 through a pipe. The cold side outlet of the preheater 10 is connected to the upper spray interface of the rectifying tower 11, the bottom interface of the rectifying tower 11 is connected with the cold side inlet of the reboiler 12, the top cold side outlet of the reboiler 12 is connected with the reflux inlet of the rectifying tower 11, the hot side inlet of the reboiler 12 is connected with low-pressure steam, and the liquid outlet of the lower part of the rectifying tower 11 is connected with the liquid inlet of the solvent tank 23. The intermediate tank 14 is connected with a vacuum pump 16 through a gas-liquid separator 15, and the intermediate tank 14 is connected with the extractant storage tank 8 through a finished product delivery pump 17. A return pipeline 22 is arranged between the secondary circulating pump 4 and the primary absorption tower 1, and a tertiary centrifugal extractor pipeline 20 is arranged between the primary circulating pump 2 and the tertiary centrifugal extractor 7. A pipeline 21 for feeding the primary centrifugal extractor is arranged between the extractant conveying pump 9 and the primary centrifugal extractor 5, and a secondary centrifugal extractor 6 is arranged between the tertiary centrifugal extractor 7 and the primary centrifugal extractor 5.
The high-concentration organic waste gas high-efficiency absorption rectification device comprises the following steps in operation:
(1) Firstly, organic waste gas enters a first-stage absorption tower 1, most organic components are absorbed after being absorbed by absorption liquid sprayed by a first-stage circulating pump 2, the organic waste gas enters a second-stage absorption tower 3 again, the absorption liquid sprayed by a second-stage circulating pump 4 is absorbed again, and the rest organic components are absorbed; (2) The secondary circulating pump 4 conveys part of absorption liquid into the primary absorption tower 1 according to the concentration, the primary circulating pump 2 conveys saturated absorption liquid into the tertiary centrifugal extractor 7 according to the concentration, then sequentially enters the secondary centrifugal extractor 6 and the primary centrifugal extractor 5, the extractant storage tank 8 conveys extractant into the primary centrifugal extractor 5 through the extractant conveying pump 9, then sequentially enters the secondary centrifugal extractor 6 and the tertiary centrifugal extractor 7, the saturated absorption liquid and the extractant are extracted and separated in the centrifugal extractor, organic components and the extractant enter the preheater 10, and separated water enters the secondary absorption tower 3; (3) The organic components and the extractant flow into the rectifying tower 11 from top to bottom after the temperature of the preheater 10 is raised, the extractant with low boiling point is evaporated into gas in the reboiler 12 and is discharged from the top of the rectifying tower 11, the gas enters the preheater 10 to exchange heat and cool, the temperature is lowered through the condenser 13, the extractant is condensed into liquid and enters the intermediate tank 14, and the vacuum pump 16 pumps negative pressure to the rectifying tower 11 through the gas-liquid separator 15, so that the boiling point of the extractant can be lowered; (4) When the liquid in the intermediate tank 14 reaches a certain level, the condensed extractant is transported to the extractant tank 8 by the product transport pump 17.
Claims (8)
1. The utility model provides a high-efficient absorption rectifying device of high concentration organic waste gas, a serial communication port, including one-level absorption tower (1), extractant storage tank (8), one-level absorption tower (1) link to each other with second grade absorption tower (3) through the pipeline, one-level absorption tower (1) link to each other with tertiary centrifugal extractor (7) through one-level circulating pump (2), tertiary centrifugal extractor (7) link to each other with second grade absorption tower (3) through one-level centrifugal extractor (5), extractant storage tank (8) link to each other with one-level centrifugal extractor (5) through extractant delivery pump (9), second grade absorption tower (3) link to each other with one-level absorption tower (1) through second grade circulating pump (4).
2. The high-concentration organic waste gas efficient absorption rectifying device according to claim 1, wherein the first-stage absorption tower (1) is connected with an organic waste gas inlet pipeline (18), the bottom of the first-stage absorption tower (1) is connected with a first-stage circulating pump (2) through a pipeline, and the first-stage circulating pump (2) is connected with the first-stage absorption tower (1) through a pipeline.
3. The high-concentration organic waste gas efficient absorption rectifying device according to claim 1, wherein the top of the secondary absorption tower (3) is connected with a gas phase discharge pipeline (19), the bottom of the secondary absorption tower (3) is connected with a secondary circulating pump (4) through a pipeline, and the secondary circulating pump (4) is connected with the secondary absorption tower (3) through a pipeline.
4. The high-concentration organic waste gas efficient absorption rectifying device according to claim 1, wherein the three-stage centrifugal extractor (7) is connected with the rectifying tower (11) through a preheater (10), and the rectifying tower (11) is connected with a reboiler (12) and a solvent tank (23).
5. The high-concentration organic waste gas efficient absorption rectifying device according to claim 4, wherein the rectifying tower (11) is connected with a condenser (13) through a preheater (10), and the condenser (13) is connected with an intermediate tank (14) through a pipeline.
6. The high-concentration organic waste gas efficient absorption rectifying device according to claim 5, wherein the intermediate tank (14) is connected with the vacuum pump (16) through the gas-liquid separator (15), and the intermediate tank (14) is connected with the extractant storage tank (8) through the finished product conveying pump (17).
7. The high-concentration organic waste gas efficient absorption rectifying device according to claim 1, wherein a return pipeline (22) is arranged between the secondary circulating pump (4) and the primary absorption tower (1), and a three-stage centrifugal extractor pipeline (20) is arranged between the primary circulating pump (2) and the three-stage centrifugal extractor (7).
8. The high-concentration organic waste gas efficient absorption rectifying device according to claim 1, wherein a primary centrifugal extractor pipeline (21) is arranged between the extractant conveying pump (9) and the primary centrifugal extractor (5), and a secondary centrifugal extractor (6) is arranged between the tertiary centrifugal extractor (7) and the primary centrifugal extractor (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420097096.7U CN220478503U (en) | 2024-01-16 | 2024-01-16 | High-concentration organic waste gas high-efficiency absorption rectifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420097096.7U CN220478503U (en) | 2024-01-16 | 2024-01-16 | High-concentration organic waste gas high-efficiency absorption rectifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220478503U true CN220478503U (en) | 2024-02-13 |
Family
ID=89829782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420097096.7U Active CN220478503U (en) | 2024-01-16 | 2024-01-16 | High-concentration organic waste gas high-efficiency absorption rectifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220478503U (en) |
-
2024
- 2024-01-16 CN CN202420097096.7U patent/CN220478503U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204294073U (en) | A kind of VOCs Volatile Gas recycle device | |
| CN111302899B (en) | Ammonia and tertiary butanol recovery device and method in cyclohexanone ammoximation production process | |
| CN210974475U (en) | Tert-butyl alcohol recovery device for ammoximation reaction | |
| CN102115436B (en) | Method for recovering acetone from dilute acetone water solution by reduced-pressure steam stripping type rectification | |
| CN111410251A (en) | Industrial wastewater treatment system based on low-temperature mass transfer concentration technology | |
| CN110252088B (en) | Recovery system of aniline in tail gas | |
| CN106823692A (en) | A kind of ammonia-contaminated gas zero-emission and ammonia reclaiming process | |
| CN113457381A (en) | Energy-saving process for capturing and recovering carbon dioxide from chimney exhaust gas | |
| CN220478503U (en) | High-concentration organic waste gas high-efficiency absorption rectifying device | |
| CN113813623A (en) | MVR concentration and rectification system and recovery method of DMAC waste liquid | |
| CN110437052B (en) | System for recovering acetaldehyde from esterification wastewater to prepare acetic acid and preparation method | |
| CN202246576U (en) | Low-temperature condensation absorption recycling device for oil gas | |
| CN217041955U (en) | Oil gas recovery device for tank cleaning operation of storage tank | |
| CN216890175U (en) | Energy-saving DMF waste water recovery system | |
| CN217220919U (en) | CO 2 And N 2 Composite trapping and purifying system | |
| CN202398261U (en) | Multiple-absorption-tower multiple-spray full oil recycling device | |
| CN214829037U (en) | Device for producing dilute nitric acid by magnesium nitrate method | |
| CN215138328U (en) | Tail gas recovery device of methyl ethyl ketone rectifying device | |
| CN201899967U (en) | Comprehensive oil gas recovery device | |
| CN210438401U (en) | Oil gas recovery system adopting cold heat exchanger | |
| CN210506160U (en) | NMP retrieves and hypergravity rectification purification system in lithium cell production | |
| CN217773735U (en) | Water-soluble organic waste gas treatment system | |
| CN215654609U (en) | High-efficient infiltration processing system of organic gas | |
| CN213589751U (en) | Waste gas collecting and treating system in hydrogen peroxide production process | |
| CN214261256U (en) | VOCs who compresses condensation, nitrogen oxygen membrane, organic steam membrane combination retrieves and nitrogen gas retrieval and utilization device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |