CN105457329A - Cyclohexane oxidation tail gas recycling device - Google Patents
Cyclohexane oxidation tail gas recycling device Download PDFInfo
- Publication number
- CN105457329A CN105457329A CN201410423585.8A CN201410423585A CN105457329A CN 105457329 A CN105457329 A CN 105457329A CN 201410423585 A CN201410423585 A CN 201410423585A CN 105457329 A CN105457329 A CN 105457329A
- Authority
- CN
- China
- Prior art keywords
- gas
- valve
- tail gas
- knockout drum
- level
- 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
Abstract
The invention relates to a cyclohexane oxidation tail gas energy utilization, organic solvent recovery and gas component separation recovery device in cyclohexanone production. The tail gas containing nitrogen, oxygen and organic components and having pressure is subjected to pressure reduction separation, doing work by expansion, membrane separation and the like to realize gas-liquid separation, the tail gas energy is fully utilized to do work, and useful gas components are recovered. The device provided by the invention can be applied to tail gas treatment of the cyclohexane oxidation process in cyclohexanone production, recovers cyclohexane, cyclohexanol and other organic components therein, reduces the raw material consumption of the device, and cuts down the discharge of organic matters to alleviate the environmental protection pressure, separates and purifies the nitrogen in the tai gas to realize resource recycling, and also can utilize oxidation tail gas to generate kinetic energy to serve as the running power of other equipment, thus reducing energy consumption.
Description
Technical field
The present invention relates to chemical emission recovery and utilization technology field, be specifically related to a kind of Cyclohexanone Production cyclohexane oxidized tail gas Energy harvesting, organic solvent reclaims and the device of nitrogen/oxygen separation recovery.
Background technology
The tail gas of Cyclohexanone Production cyclohexane oxidation operation from stills for air blowing, general processing method be by this tail gas by after the useful organic component such as cyclohexane, cyclohexanol of tail gas absorber recovery section again by Cemented filling to torch emptying.Nitrogen ~ 97% in tail gas behind absorption tower, oxygen ~ 2%, organic component ~ 0.45% such as cyclohexane, pressure 1.1 ~ 1.2Mpa, temperature 3 ~ 4 DEG C.The pimelinketone device oxidized tail gas discharge capacity 16000 ~ 20000Nm of 100000 tons/year of scales
3/ h, tail gas emptying amount and pressure are more greatly and wherein containing organic components such as valuable higher cyclohexane, cyclohexanol, and direct emptying can be wasted in a large number can resource and produce certain influence to environment.If the organic solvent taking practical mode to be used by tail gas pressure or to reclaim wherein and gas component, resource, protection of the environment etc. all important function can be had to effectively utilizing.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of cyclohexane oxidation off-gas recycle device is provided, the organic solvent in tail gas and divided gas flow component can be collected, and the pressure acting of tail gas can be utilized to obtain energy.
The object of the present invention is achieved like this: a kind of cyclohexane oxidation off-gas recycle device, comprise connected successively by pipeline have the first-level buffer knockout drum of wire mesh demister, level 2 buffering knockout drum, coalescing separator, tail gas pre-heater, heater exhaust gas, decompressor and release flare.
Described heater exhaust gas outlet is separately provided with two branch roads and truncates gas overbottom pressure gas position and membrane separator through valve respectively; Oxygen rich gas after UF membrane and nitrogen go to oxygen rich air and nitrogen gas position through valve respectively.
Be provided with high-speed switch B valve before described first-level buffer knockout drum, be separately provided with bypass high-speed switch A valve and be connected to torch by pipeline.
First class pressure control valve and secondary pressure control valve is respectively arranged with after described first-level buffer knockout drum, level 2 buffering knockout drum.
Described decompressor is provided with temperature control adjusting valve.
Be respectively equipped with one-level recovery valve, secondary recovery valve and three grades of recovery valve gate open pipings bottom described first-level buffer knockout drum, level 2 buffering knockout drum and coalescing separator and be connected to solvent recovery tank.
A kind of cyclohexane oxidation off-gas recycle device provided by the invention, has following beneficial effect:
1, reclaim the organic solvent such as cyclohexane, cyclohexanol in oxidized tail gas, can be recycled cyclohexanone production system, reduces pimelinketone device consumption of raw materials.Can surrounding enviroment be improved because organic component content in emission gases reduces simultaneously, alleviate the pollution to environment, the Environmental Protection Level of lifting device.
2, utilize the pressure of oxidized tail gas to drive expander end rotate and then be converted into dog point kinetic energy, this kinetic energy can be used for the power of compressor as air pressurized, saves power consumption; Hot-air after compression carries out heat exchange as the thermal source of heater exhaust gas and tail gas, improves the temperature of tail gas, saves the consumption of steam.
3, the portion gas after removing organic matter uses other devices (as boiler soot-blowing gas) with alternative compressed air, can reduce compressed air consumption.
4, the nitrogen after UF membrane and oxygen rich gas can be back to use in production system, can use the displacement etc. in Cyclohexanone Production as nitrogen, and oxygen rich gas can use cyclohexane oxidation operation as oxygen source.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Structure of the present invention as shown in Figure 1, a kind of cyclohexane oxidation off-gas recycle device, comprise connected successively by pipeline have the first-level buffer knockout drum 3 of wire mesh demister, level 2 buffering knockout drum 6, coalescing separator 9, tail gas pre-heater 12, heater exhaust gas 13, decompressor 20 and release flare 23.Heater exhaust gas 13 exports and is separately provided with two branch roads and truncates gas overbottom pressure gas position and valve 14 striping separator 15 through valve 18 respectively; Oxygen rich gas after UF membrane and nitrogen go to oxygen rich air and nitrogen gas position through valve 16 and valve 17 respectively.Be provided with high-speed switch B valve 2 before first-level buffer knockout drum 3, be separately provided with bypass high-speed switch A valve 1 and be connected to torch 23 by pipeline.First class pressure control valve 5 and secondary pressure control valve 8 is respectively arranged with after first-level buffer knockout drum 3, level 2 buffering knockout drum 6.Decompressor 20 is provided with temperature control adjusting valve 21.Be respectively equipped with one-level recovery valve 4, secondary recovery valve 7 and three grades of recovery valves 10 bottom first-level buffer knockout drum 3, level 2 buffering knockout drum 6 and coalescing separator 9 and be connected to solvent recovery tank 11 by pipeline.
Operation principle of the present invention is as follows:
During normal production, oxidized tail gas removes follow-up relevant device through acceleration switching valve 2, and acceleration switching valve 1 is only opened and made tail gas directly by torch emptying under device abnormal conditions.Organic solvent is reclaimed in first-level buffer knockout drum 3, level 2 buffering knockout drum 6 and coalescing separator 9; Tail gas pre-heater 12 adopts Steam Heating tail gas, and heater exhaust gas 13 adopts hot air tail gas; Partial tail gas after heating does work through decompressor 20 and drives compressor to air pressurized, ability to be utilized, partial tail gas directly can use production desired area by branch road valve 18, also has partial tail gas after membrane separator 15, to obtain nitrogen and oxygen rich gas can be back to use in production.
Normal production timer ruuning situation: its Pressure Drop is low to moderate 0.9 ~ 1.0Mpa by one-level decompression valve 5 and partial organic substances can be made to liquefy because temperature reduces and then can gas-liquid separation after the oxidized tail gas of pressure 1.1 ~ 1.2MPa enters first-level buffer knockout drum 3, tail gas enters level 2 buffering knockout drum 6 again and by second depressurized control valve 8, its Pressure Drop is low to moderate 0.7 ~ 0.8MPa partial organic substances can be made again to liquefy, tail gas then enter coalescing separator 9 separable fall residual organic substances in tail gas.Tail gas can enter the place such as decompressor 20, membrane separator 15 in preheater 12 after Steam Heating, decompressor 20 can drive compressor to pressurize to air, hot-air after pressurization enters heater exhaust gas 13 makes exhaust temperature raise, now can close the steam of tail gas pre-heater 12, just can meet the intensification demand of tail gas by means of only heater exhaust gas 13.Tail gas main component after intensification is nitrogen and oxygen, and part can directly use as compressed air, and part isolates nitrogen through membrane separator 15 and oxygen rich air is back to use pimelinketone device.The organic matter be separated is collected in solvent recovery tank 11 and is also back to use pimelinketone device.
Claims (6)
1. a cyclohexane oxidation off-gas recycle device, is characterized in that: comprise connected successively by pipeline have the first-level buffer knockout drum (3) of wire mesh demister, level 2 buffering knockout drum (6), coalescing separator (9), tail gas pre-heater (12), heater exhaust gas (13), decompressor (20) and release flare (23).
2. heater exhaust gas according to claim 1 (13) outlet is separately provided with two branch roads and truncates gas overbottom pressure gas position and valve (14) striping separator (15) through valve (18) respectively; Oxygen rich gas after UF membrane and nitrogen go to oxygen rich air and nitrogen gas position through valve (16) and valve (17) respectively.
3. be provided with high-speed switch B valve (2) before first-level buffer knockout drum (3) according to claim 1, be separately provided with bypass high-speed switch A valve (1) and be connected to torch (23) by pipeline.
4. be respectively arranged with first class pressure control valve (5) and secondary pressure control valve (8) after first-level buffer knockout drum (3) according to claim 1, level 2 buffering knockout drum (6).
5. decompressor according to claim 1 (20) is provided with temperature control adjusting valve (21).
6. first-level buffer knockout drum (3) according to claim 1, level 2 buffering knockout drum (6) and coalescing separator (9) bottom are respectively equipped with one-level recovery valve (4), secondary recovery valve (7) and three grades of recovery valve (10) and are connected to solvent recovery tank (11) by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410423585.8A CN105457329A (en) | 2014-08-26 | 2014-08-26 | Cyclohexane oxidation tail gas recycling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410423585.8A CN105457329A (en) | 2014-08-26 | 2014-08-26 | Cyclohexane oxidation tail gas recycling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105457329A true CN105457329A (en) | 2016-04-06 |
Family
ID=55595755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410423585.8A Pending CN105457329A (en) | 2014-08-26 | 2014-08-26 | Cyclohexane oxidation tail gas recycling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105457329A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016854A (en) * | 2016-06-29 | 2016-10-12 | 湖北三宁化工股份有限公司 | PC decarbonization process PC liquid pressure energy recovery method and device |
| CN106352658A (en) * | 2016-10-27 | 2017-01-25 | 刘克军 | Oxidized-tail-gas treating device for cyclohexanone device and application thereof |
| CN106362548A (en) * | 2016-10-10 | 2017-02-01 | 湖南百利工程科技股份有限公司 | Treating method of oxidized tail gas in process of manufacturing cyclohexanone with cyclohexane oxidation method |
| CN107469615A (en) * | 2017-08-31 | 2017-12-15 | 成都普瑞得科技有限公司 | A kind of oxidizing cyclohexanone tail gas clean-up and method of comprehensive utilization and system |
| US10865175B1 (en) | 2020-06-07 | 2020-12-15 | King Saud University | Method of synthesizing cyclohexanone |
-
2014
- 2014-08-26 CN CN201410423585.8A patent/CN105457329A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016854A (en) * | 2016-06-29 | 2016-10-12 | 湖北三宁化工股份有限公司 | PC decarbonization process PC liquid pressure energy recovery method and device |
| CN106362548A (en) * | 2016-10-10 | 2017-02-01 | 湖南百利工程科技股份有限公司 | Treating method of oxidized tail gas in process of manufacturing cyclohexanone with cyclohexane oxidation method |
| CN106352658A (en) * | 2016-10-27 | 2017-01-25 | 刘克军 | Oxidized-tail-gas treating device for cyclohexanone device and application thereof |
| CN106352658B (en) * | 2016-10-27 | 2022-06-07 | 刘克军 | Oxidation tail gas treatment device for cyclohexanone device and application thereof |
| CN107469615A (en) * | 2017-08-31 | 2017-12-15 | 成都普瑞得科技有限公司 | A kind of oxidizing cyclohexanone tail gas clean-up and method of comprehensive utilization and system |
| US10865175B1 (en) | 2020-06-07 | 2020-12-15 | King Saud University | Method of synthesizing cyclohexanone |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105457329A (en) | Cyclohexane oxidation tail gas recycling device | |
| CN202297109U (en) | Total recycle low-pressure hydrogen recovery device | |
| CN101691320B (en) | Device for purifying and recycling methane and carbon dioxide from landfill gas | |
| CN101349150A (en) | Well head accompanying gas on site recovery purification method | |
| CN204051046U (en) | A kind of cyclohexane oxidation off-gas recycle device | |
| CN203964550U (en) | In carbon disulfide preparation process, from hydrogen sulfide tail gas, reclaim the device of carbon disulfide | |
| CN104006629B (en) | Carbon disulfide preparation process reclaims from hydrogen sulfide tail gas the method and device of carbon disulfide | |
| CN104194852A (en) | High-yield light hydrocarbon recovery method from low-pressure natural gas | |
| CN203577568U (en) | Tail gas recycling device | |
| CN104482396B (en) | BOG recovery system with cold storage function | |
| CN205710634U (en) | A kind of decarbonization desulfurization system of synthetic natural gas | |
| CN103395744B (en) | Rapid hydrogen extraction driving method for pressure swing adsorption hydrogen production system | |
| CN106799112B (en) | The method of high efficiente callback phenol-acetone device oxidized tail gas energy | |
| CN203892160U (en) | Process device for making up shortage of inflation quantity of air compressors in summer | |
| CN204337833U (en) | Ammonia oil separating and reclaiming device | |
| CN204121953U (en) | Tasteless reclaimed rubber desulfidation tail gas cleaning system | |
| CN200986178Y (en) | Pressure charging type vapor recovery device | |
| CN203954988U (en) | A kind of butadiene device for recovering tail gas | |
| CN203108394U (en) | Cyclohexane oxidized tail gas treatment system | |
| CN206621901U (en) | A kind of riboflavin extracts device for recovering tail gas | |
| CN107365606B (en) | Energy-saving zero-emission multipurpose molecular sieve dehydration device | |
| CN202446969U (en) | Water cooling type variable pressure waste gas absorption recycling device | |
| CN205024191U (en) | Recovery unit of unqualified gas of LNG mill operation | |
| CN207498327U (en) | A kind of equipment for being pressurized film purifying biogas and preparing natural gas | |
| CN205368196U (en) | Aftertreatment recovery unit of n butane oxidation method production cis -butenedioic anhydride |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160406 |
|
| WD01 | Invention patent application deemed withdrawn after publication |