CN219848889U - Active carbon vacuum high-efficiency desorption device suitable for organic gas recovery - Google Patents
Active carbon vacuum high-efficiency desorption device suitable for organic gas recovery Download PDFInfo
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- CN219848889U CN219848889U CN202321321891.1U CN202321321891U CN219848889U CN 219848889 U CN219848889 U CN 219848889U CN 202321321891 U CN202321321891 U CN 202321321891U CN 219848889 U CN219848889 U CN 219848889U
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- China
- Prior art keywords
- carbon tank
- gas
- absorption tower
- device suitable
- outlet end
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 41
- 238000011084 recovery Methods 0.000 title claims abstract description 13
- 238000003795 desorption Methods 0.000 title claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 45
- 238000010521 absorption reaction Methods 0.000 claims abstract description 39
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 19
- 239000008187 granular material Substances 0.000 claims description 12
- 230000001502 supplementing effect Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 17
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 6
- 239000002912 waste gas Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002351 wastewater Substances 0.000 abstract description 3
- 238000004065 wastewater treatment Methods 0.000 abstract description 3
- 238000010926 purge Methods 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000012855 volatile organic compound Substances 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model belongs to the field of waste gas recovery and treatment, and relates to an active carbon vacuum efficient desorption device suitable for organic gas recovery, which comprises a granular carbon tank, wherein a tail gas inlet and a nitrogen gas inlet are arranged at the top of the granular carbon tank, a tail gas fan is connected to a clean gas outlet end at one side of the bottom of the granular carbon tank, a dry vacuum pump is connected to a gas outlet end at the other side of the bottom of the granular carbon tank, an outlet end of the dry vacuum pump is connected with an absorption tower, and an outlet end of the absorption tower is connected with the tail gas inlet at the top of the granular carbon tank. The utility model has scientific and reasonable design, adopts negative pressure analysis, is more thorough than the conventional steam analysis, and has no analysis residue; the whole process is carried out under the low-temperature condition, and the whole process is not required to be heated, so that the method is safer and more environment-friendly; the whole process does not produce waste water and secondary pollution; the auxiliary nitrogen protection gas can be used for occasions without wastewater treatment systems, and has good application effect on the treatment of waste gas with small air quantity and large air quantity.
Description
Technical Field
The utility model belongs to the field of waste gas recovery and treatment, relates to an organic gas adsorption and recovery technology, and particularly relates to an active carbon vacuum efficient desorption device suitable for organic gas recovery.
Background
The technology for recycling organic gas in the prior art mainly comprises the following steps: cryogenic process, membrane concentration process, and adsorption condensation recovery process.
The organic gas recovery device in the cryogenic process needs to operate at the temperature of-35 ℃ to-75 ℃, has extremely high energy consumption, has high requirements on equipment materials and correspondingly high investment and operation cost, and is rarely used in developed countries.
The membrane concentration method has the advantages of low cost, low energy consumption, no secondary pollution, small occupied area, no need of stopping installation and maintenance, long continuous working period and the like. However, the membrane concentration method has high equipment cost and limited application range.
The adsorption condensation recovery method mainly adopts steam analysis, has higher energy consumption, has limited service life of the activated carbon adsorption material, generally needs to be used for dangerous waste treatment after replacement for about 1-2 years, and generates high dangerous waste disposal cost.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, and provides the vacuum efficient desorption device for the activated carbon, which is suitable for recycling the organic gas, can ensure thorough analysis each time, can effectively prolong the service life of the activated carbon while having no residue in analysis, is phase-change and energy-saving, and has the advantages of low cost of replacement of auxiliary materials, no wastewater generation in the whole treatment process, no waste water treatment equipment and no cost.
The utility model solves the technical problems by adopting the following technical scheme:
the utility model provides an active carbon vacuum high-efficient desorption device suitable for organic gas retrieves, includes the granule carbon tank top is provided with tail gas air inlet and nitrogen gas air inlet, is connected with the tail gas fan at granule carbon tank bottom one side clean gas exit end, is connected with the dry-type vacuum pump at granule carbon tank bottom opposite side gas exit end, and the absorption tower is connected to the exit end of this dry-type vacuum pump, the exit end of absorption tower links to each other with the tail gas air inlet at granule carbon tank top.
The lower part of the absorption tower is provided with a liquid supplementing valve, a liquid discharging valve and a circulating pump, and one side of the absorption tower is provided with a low-temperature condenser.
And a pressure transmitter is arranged on the granular carbon tank to realize interlocking with the dry vacuum pump.
The utility model has the advantages and positive effects that:
the utility model has scientific and reasonable design, adopts negative pressure analysis, is more thorough than the conventional steam analysis, and has no analysis residue; the whole process is carried out under the low-temperature condition, and the whole process is not required to be heated, so that the method is safer and more environment-friendly; the whole process does not produce waste water and secondary pollution; the auxiliary nitrogen protection gas can be used for occasions without wastewater treatment systems, and has good application effect on the treatment of waste gas with small air quantity and large air quantity.
Drawings
Figure 1 is a schematic view of the structure of the device of the utility model,
1, a granular carbon tank, 2, an absorption tower, 3, a circulating pump, 4, a low-temperature condenser, 5, a dry vacuum pump, 6 and a tail gas fan.
Detailed Description
The utility model will now be described in further detail by way of specific examples, which are given by way of illustration only and not by way of limitation, with reference to the accompanying drawings.
The utility model provides an active carbon vacuum high-efficient desorption device suitable for organic gas retrieves, is shown as the figure 1, includes granule carbon tank 1 top is provided with tail gas air inlet and nitrogen gas air inlet, is connected with tail gas fan 6 in granule carbon tank 1 bottom one side clean gas exit end, is connected with dry vacuum pump 5 at granule carbon tank 1 bottom opposite side gas exit end, and absorption tower 2 is connected to the exit end of this dry vacuum pump 5, the exit end of absorption tower 2 links to each other with the tail gas air inlet at granule carbon tank 1 top.
The lower part of the absorption tower 2 is provided with a liquid supplementing valve, a liquid discharging valve and a circulating pump 3.
A low temperature condenser 4 is provided on one side of the absorption tower 2.
And a pressure transmitter and a dry vacuum pump 5 are arranged on the granular carbon tank 1 to realize interlocking, so that the parsed organic gas is directly circulated back to the tail gas inlet.
When the device is used, tail gas enters the particle carbon tank 1 from the tank top of the particle carbon tank 1 and is discharged from the side surface of the bottom, the outlet of the particle carbon tank is divided into two paths, one path is clean gas and is directly discharged, the other path is connected with the dry vacuum pump 5, the dry vacuum pump 5 is used for pumping negative pressure to the particle carbon tank 1 to minus 80KPa, the outlet of the dry vacuum pump 5 is connected with the absorption tower 2, the absorption tower is provided with the circulating pump 3 and the low-temperature condenser 4, 7 ℃ low-temperature water is required to be introduced into the low-temperature condenser 4, the absorption liquid of the absorption tower 2 is cooled, the temperature of the indirectly cooled tail gas is reduced to 20 ℃, the low-temperature enhanced absorption effect is achieved, the noncondensable gas containing a small amount of VOCs after 99% of VOCs is absorbed by the absorption tower 2, the noncondensable gas is directly circulated to the tail gas inlet, the absorption tower is required to be periodically supplemented with absorption liquid, the absorption liquid can be periodically replaced by organic solvents such as ethanol and methylene dichloride, and the like, and the absorption liquid is required to be discharged to a designated storage after the absorption is saturated.
The vacuum high-efficiency desorption of the activated carbon comprises three processes: and a nitrogen purging stage, a vacuum pump vacuumizing stage and an absorption tower for absorption.
(1) Nitrogen purging: firstly, introducing nitrogen into the granular carbon tank 1 for purging, purging air in the granular carbon tank by adopting the nitrogen, wherein the purging time is generally 30 minutes, and firstly, purging the air in the granular carbon tank;
(2) and a vacuum pump vacuumizing stage: the evacuation stage uses a dry vacuum pump 5 to evacuate the particulate carbon canister 1 from two positions at different heights. In the process of vacuumizing the granular carbon tank 1, the negative pressure of the carbon tank needs to be pumped to be lower than 80KPa, the vacuumizing time is generally set to be 60 minutes, and the granular carbon tank is provided with a pressure transmitter which is interlocked with the dry vacuum pump 5 to maintain the absolute negative pressure state of the carbon tank. When the negative pressure is reached, the dry pump is shut down, and when the negative pressure is higher than 80KPa, the dry vacuum pump is started to start pumping the negative pressure to the carbon tank.
(3) Absorption stage of absorption tower: and (3) introducing ethanol absorption liquid into the absorption tower 2 for continuous cyclic absorption, wherein the cyclic absorption time is generally set to 2-4 hours, VOCs in tail gas are continuously absorbed by the absorption liquid through continuous circulation, when the concentration of the absorption liquid reaches 6%, a liquid discharge valve is opened to discharge the absorption liquid, then an absorption liquid supplementing valve is opened to supplement new absorption liquid, the liquid supplementing is finished, and the liquid supplementing valve is closed.
Although the embodiments of the present utility model and the accompanying drawings have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the utility model and the appended claims, and therefore the scope of the utility model is not limited to the embodiments and the disclosure of the drawings.
Claims (4)
1. Active carbon vacuum high-efficient desorption device suitable for organic gas retrieves, its characterized in that: including granule carbon tank (1) top is provided with tail gas air inlet and nitrogen gas air inlet, is connected with tail gas fan (6) in clean gas outlet end in granule carbon tank (1) bottom one side, is connected with dry vacuum pump (5) at the gas outlet end of granule carbon tank (1) bottom opposite side, and absorption tower (2) are connected to the exit end of this dry vacuum pump (5), the exit end of absorption tower (2) links to each other with the tail gas air inlet at granule carbon tank (1) top.
2. The activated carbon vacuum efficient desorption device suitable for organic gas recovery according to claim 1, wherein: the lower part of the absorption tower (2) is provided with a liquid supplementing valve, a liquid discharging valve and a circulating pump (3).
3. The activated carbon vacuum efficient desorption device suitable for organic gas recovery according to claim 1, wherein: a low-temperature condenser (4) is arranged at one side of the absorption tower (2).
4. The activated carbon vacuum efficient desorption device suitable for organic gas recovery according to claim 1, wherein: and a pressure transmitter and a dry vacuum pump (5) are arranged on the granular carbon tank (1) in an interlocking way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321321891.1U CN219848889U (en) | 2023-05-29 | 2023-05-29 | Active carbon vacuum high-efficiency desorption device suitable for organic gas recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321321891.1U CN219848889U (en) | 2023-05-29 | 2023-05-29 | Active carbon vacuum high-efficiency desorption device suitable for organic gas recovery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219848889U true CN219848889U (en) | 2023-10-20 |
Family
ID=88334245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321321891.1U Active CN219848889U (en) | 2023-05-29 | 2023-05-29 | Active carbon vacuum high-efficiency desorption device suitable for organic gas recovery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219848889U (en) |
-
2023
- 2023-05-29 CN CN202321321891.1U patent/CN219848889U/en active Active
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