CN210964511U - VOC gas active carbon adsorption comprehensive treatment system - Google Patents
VOC gas active carbon adsorption comprehensive treatment system Download PDFInfo
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- CN210964511U CN210964511U CN201921430196.2U CN201921430196U CN210964511U CN 210964511 U CN210964511 U CN 210964511U CN 201921430196 U CN201921430196 U CN 201921430196U CN 210964511 U CN210964511 U CN 210964511U
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- active carbon
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- activated carbon
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 154
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 62
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 29
- 238000000746 purification Methods 0.000 claims abstract description 68
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims description 41
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 2
- 238000004887 air purification Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 14
- 239000007789 gas Substances 0.000 description 51
- 239000012855 volatile organic compound Substances 0.000 description 16
- 238000010521 absorption reaction Methods 0.000 description 7
- 208000028659 discharge Diseases 0.000 description 6
- 239000000178 monomer Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- HIXDQWDOVZUNNA-UHFFFAOYSA-N 2-(3,4-dimethoxyphenyl)-5-hydroxy-7-methoxychromen-4-one Chemical compound C=1C(OC)=CC(O)=C(C(C=2)=O)C=1OC=2C1=CC=C(OC)C(OC)=C1 HIXDQWDOVZUNNA-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model discloses a VOC gas active carbon adsorption integrated processing system that treatment effect is good, include: precooling apparatus, active carbon purify analytic device in vacuum, shallow cold charge device, cryrogenic device and liquid storage pot, precooling apparatus's one end is connected with the oil gas intake pipe, precooling apparatus's the other end is connected with active carbon purifies analytic device in vacuum through first gas-supply pipe, active carbon purifies analytic device in vacuum and is connected with shallow cold charge device through the second gas-supply pipe, shallow cold charge device is connected with cryrogenic device through the third gas-supply pipe, cryrogenic device is connected with first gas-supply pipe through the muffler, shallow cold charge device still is connected with cryrogenic device through first transfer line, cryrogenic device is connected with the liquid storage pot through the second transfer line be provided with the blast pipe on the analytic device in active carbon purification vacuum.
Description
Technical Field
The utility model relates to an exhaust-gas treatment field especially relates to a VOC gaseous active carbon adsorption integrated processing system.
Background
VOC gas refers to volatile organic compounds, but the definition in the environmental sense refers to an active class of volatile organic compounds, i.e., a class of volatile organic compounds that can cause harm. It includes benzene series, organic chloride, freon series, organic ketone, amine, alcohol, ether, ester, acid and petroleum hydrocarbon compound. At present, the equipment generally adopted by the mixed oil gas comprises five steps of a precooling device, an activated carbon adsorption device, a shallow cooling device, a deep cooling device and a collecting device, wherein a surface cooling heat exchanger in the precooling device, an activated carbon purification tank in the activated carbon adsorption device, a shallow cooling heat exchanger in the shallow cooling device and a deep cooling heat exchanger in the deep cooling device all adopt a single structure, the switching use cannot be realized, once any single device is damaged, the whole machine is required to be shut down for maintenance, the delay time is long, the replacement is inconvenient, meanwhile, the existing activated carbon adsorption device has poor adsorption effect, only can realize a passive adsorption function, the secondary discharge is easy to cause, the purification effect is poor, in addition, the activated carbon wall body in the existing activated carbon purification tank cannot change the self temperature, the high-temperature failure is easy to occur when the temperature is too high, and the low-temperature failure is easy to occur when the temperature is too low in, the adsorption effect is not ideal, the waste gas treatment effect is greatly reduced, and the national discharge standard of VOC gas cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: provides a VOC gas active carbon adsorption comprehensive treatment system with good treatment effect.
In order to solve the technical problem, the utility model discloses a technical scheme is: VOC gaseous active carbon adsorption integrated processing system includes: precooling apparatus, active carbon purify analytic device in vacuum, shallow cold charge device, cryrogenic device and liquid storage pot, precooling apparatus's one end is connected with the oil gas intake pipe, precooling apparatus's the other end is connected with active carbon purifies analytic device in vacuum through first gas-supply pipe, active carbon purifies analytic device in vacuum and is connected with shallow cold charge device through the second gas-supply pipe, shallow cold charge device is connected with cryrogenic device through the third gas-supply pipe, cryrogenic device is connected with first gas-supply pipe through the muffler, shallow cold charge device still is connected with cryrogenic device through first transfer line, cryrogenic device is connected with the liquid storage pot through the second transfer line be provided with the blast pipe on the analytic device in active carbon purification vacuum.
In order to better solve the technical problem, the utility model discloses a further technical scheme is: the active carbon purifies vacuum analytical equipment and includes the active carbon purification jar of two parallelly connected settings, the one end of two active carbon purification jars is connected with first gas-supply pipe through second inlet branch pipe respectively be provided with first stop valve on two second inlet branch pipes, the other end of two active carbon purification jars is given vent to anger the branch pipe through the second respectively and is connected with the blast pipe two seconds are given vent to anger and are provided with the second stop valve on the branch pipe respectively two active carbon purification jars are provided with the vacuum pump between the middle part, the extraction opening of vacuum pump is connected with two active carbon purification jars through the exhaust tube respectively be provided with the third stop valve on two exhaust tubes respectively, the gas outlet of vacuum pump is connected with the second gas-supply pipe.
In order to better solve the technical problem, the utility model discloses a further technical scheme is: the precooling device comprises two surface-cooling heat exchangers arranged in parallel, one ends of the two surface-cooling heat exchangers are respectively connected with the oil-gas inlet pipe through first gas inlet branch pipes, and the other ends of the two surface-cooling heat exchangers are respectively connected with first gas conveying pipes through first gas outlet branch pipes.
In order to better solve the technical problem, the utility model discloses a further technical scheme is: the structure of the activated carbon purification tank comprises: the purifying tank body the inside chamber that admits air that is provided with of one end of the purifying tank body, the chamber that admits air is connected with second air inlet branch pipe through the air inlet the inside chamber of giving vent to anger that is provided with of the other end of the purifying tank body, it is connected with the second branch pipe of giving vent to anger to go out the air outlet chamber the internal a plurality of active carbon wall bodies that evenly are provided with of purifying tank between chamber and the chamber of giving vent to anger be provided with heat exchange coil pipe in the active carbon wall body respectively, active carbon wall body is stretched out at heat exchange coil pipe's both ends and is connected with heat exchanger unit be provided with the purification chamber in the purifying tank body between two adjacent active carbon wall bodies respectively purify the chamber and give vent to anger.
In order to better solve the technical problem, the utility model discloses a further technical scheme is: the heat exchanger unit adopts a heating unit.
In order to better solve the technical problem, the utility model discloses a further technical scheme is: the heat exchange unit adopts a refrigerating unit.
The utility model has the advantages that: the VOC gas active carbon adsorption comprehensive treatment system is compact in structure, a surface cooling heat exchanger in a precooling device, an active carbon purification tank in an active carbon adsorption device, a shallow cooling heat exchanger in the shallow cooling device and a deep cooling heat exchanger in the deep cooling device are all designed in a parallel double-body structure, any one monomer can be switched to another monomer for use after being damaged, online maintenance and replacement can be realized, the work efficiency is not delayed, the replacement is convenient, meanwhile, the active carbon purification tank adopts a structure of absorbing and vacuumizing simultaneously, mixed oil gas can be actively analyzed, the adsorption is more sufficient, the purification effect is good, in addition, a heat exchange coil is adopted in the active carbon wall to be connected with a heat exchange unit, incomplete absorption can occur when the temperature is higher than 32 ℃ in summer, the heat exchange unit connected with the heat exchange coil adopts a refrigerating unit, and the temperature of the active carbon wall can be reduced, the absorption effect of the activated carbon wall body is ensured. In winter, when the temperature is lower than 0 ℃, the exchange liquid is easy to freeze, and the heat exchange unit connected with the heat exchange coil adopts a heating unit, so that the temperature of the activated carbon wall can be controlled to be more than 10 ℃, the exchange adsorption effect is ensured, and the national discharge standard of VOC gas is met.
Drawings
Fig. 1 is the schematic structural diagram of the VOC gas activated carbon adsorption comprehensive treatment system.
Fig. 2 is a schematic structural view of the activated carbon purification tank of fig. 1.
Fig. 3 is a schematic cross-sectional structure of fig. 2.
Fig. 4 is a rear view structural diagram of fig. 2.
Fig. 5 is a schematic sectional structure view of the activated carbon wall in fig. 3.
In the figure: 1. the system comprises a precooling device, 111, a surface-cooled heat exchanger, 112, a first air inlet branch pipe, 113, a first air outlet branch pipe, 2, an activated carbon purification vacuum analysis device, 21, an activated carbon purification tank, 211, a purification tank body, 212, an air inlet cavity, 213, an air inlet, 214, an air outlet cavity, 215, an air outlet, 216, an activated carbon wall body, 217, a heat exchange coil, 218, a purification cavity, 219, a vacuumizing pipeline, 22, a second air inlet branch pipe, 23, a first stop valve, 24, a second air outlet branch pipe, 25, a second stop valve, 26, a vacuum pump, 27, an air exhaust pipe, 28, a third stop valve, 3, a shallow cooling device, 4, a cryogenic device, 5, a liquid storage tank, 6, an oil and gas inlet pipe, 7, a first air pipe, 8, a second air pipe, 9, a third air pipe, 10, a return air pipe, 11, a first liquid conveying pipe, 12, a second liquid conveying pipe, 13 and.
Detailed Description
The following detailed description of the present invention will be made in conjunction with the accompanying drawings and specific embodiments.
As shown in fig. 1, the VOC gas activated carbon adsorption integrated processing system includes: precooling apparatus 1, active carbon purify analytic device 2 in vacuum, shallow cold charge device 3, cryrogenic device 4 and liquid storage pot 5, precooling apparatus 1's one end is connected with oil gas intake pipe 6, precooling apparatus 1's the other end is connected with active carbon purifies analytic device 2 in vacuum through first gas-supply pipe 7, active carbon purifies analytic device 2 in vacuum and is connected with shallow cold charge device 3 through second gas-supply pipe 8, shallow cold charge device 3 is connected with cryrogenic device 4 through third gas-supply pipe 9, cryrogenic device 4 is connected with first gas-supply pipe 7 through muffler 10, shallow cold charge device 3 still is connected with cryrogenic device 4 through first transfer line 11, cryrogenic device 4 is connected with liquid storage pot 5 through second transfer line 12 be provided with blast pipe 13 on the analytic device 2 in active carbon purification vacuum.
As shown in fig. 1, in this example, the activated carbon purification vacuum desorption apparatus 2 includes two activated carbon purification tanks 21 arranged in parallel, one end of each of the two activated carbon purification tanks 21 is connected with the first air delivery pipe 7 through a second air inlet branch pipe 22, the two second inlet branch pipes 22 are respectively provided with a first stop valve 23, the other ends of the two activated carbon purification tanks 21 are respectively connected with the exhaust pipe 13 through second outlet branch pipes 24, the two second outlet branch pipes 24 are respectively provided with a second stop valve 25, a vacuum pump 26 is arranged between the middle parts of the two activated carbon purification tanks 21, the pumping ports of the vacuum pump 26 are respectively connected with the two activated carbon purification tanks 21 through pumping pipes 27, and the two air exhaust pipes 27 are respectively provided with a third stop valve 28, and the air outlet of the vacuum pump 26 is connected with the second air conveying pipe 8.
As shown in fig. 1, in this example, the pre-cooling device 1 includes two surface-cooling heat exchangers 111 arranged in parallel, one end of each of the two surface-cooling heat exchangers 111 is connected to the oil-gas inlet pipe 6 through a first inlet branch pipe 112, and the other end of each of the two surface-cooling heat exchangers 111 is connected to the first gas pipe 7 through a first outlet branch pipe 113.
As shown in fig. 2, 3, 4, and 5, in this example, the structure of the activated carbon purification tank 21 includes: the air inlet cavity 212 is arranged in one end of the purification tank body 211, the air inlet cavity 212 is connected with the second air inlet branch pipe 22 through an air inlet 213, the air outlet cavity 214 is arranged in the other end of the purification tank body 211, the air outlet cavity 214 is connected with the second air outlet branch pipe 24 through an air outlet 215, a plurality of activated carbon wall bodies 216 are uniformly arranged in the purification tank body 211 between the air inlet cavity 212 and the air outlet cavity 214, heat exchange coil pipes 217 are respectively arranged in the activated carbon wall bodies 216, the activated carbon wall bodies 216 are extended out of two ends of each heat exchange coil pipe 217 to be connected with a heat exchanger unit, purification cavities 218 are respectively arranged in the purification tank body 211 between two adjacent activated carbon wall bodies 216, and vacuum pumping pipelines 219 connected with air exhaust pipes 27 are respectively arranged in the purification cavities 218 and the air outlet cavities 214.
In winter, when the temperature is lower than 0 ℃, the exchange liquid is easy to freeze, and the heat exchange unit adopts a heating unit, so that the temperature of the activated carbon wall can be controlled to be more than 10 ℃, and the exchange adsorption effect is ensured.
In summer, when the temperature is higher than 32 ℃, the incomplete absorption condition can occur, and the heat exchange unit adopts a refrigerating unit, so that the temperature of the activated carbon wall body can be reduced, and the absorption effect of the activated carbon wall body is ensured.
When the device works, VOC mixed oil gas enters the precooling device 1 from the oil gas inlet pipe 6, two surface-cooling heat exchangers 111 arranged in parallel in the precooling device 1 can be switched to use, in the precooling device 1, the mixed oil gas sequentially passes through the first air inlet branch pipe 112, the surface-cooling heat exchangers 111 and the first air outlet branch pipe 113 to reach the first air delivery pipe 7, the surface-cooling heat exchangers 11 can precool the mixed oil gas to control the temperature of the mixed oil gas to be between 0 and 20 ℃, the precooled mixed oil gas enters the active carbon purification vacuum analysis device 2 through the first air delivery pipe 7, two active carbon purification tanks 21 arranged in parallel in the active carbon purification vacuum analysis device 2 can be switched to use, in the active carbon purification vacuum analysis device 2, the first stop valve 23, the second stop valve 25 and the third stop valve 28 connected to one of the active carbon purification tanks 21 are closed, open the first stop valve 23, the second stop valve 25 and the third stop valve 28 of connecting on another active carbon evolution jar 21, the mixed oil gas in the first gas-supply pipe 7 passes through second inlet branch pipe 22 in proper order, behind active carbon purification jar 21 and the second outlet branch pipe 24 through blast pipe 13 with clean gas discharge, active carbon purification jar 21 can carry out analysis absorption to organic matter and fluid in the mixed oil gas, thereby produce clean gas and discharge, carry out analysis absorbent in-process need the evacuation at active carbon purification jar 21 to the mixed oil gas, and meanwhile, start vacuum pump 26, vacuum pump 26 carries out the evacuation through exhaust tube 27 to active carbon purification jar 21. In the activated carbon purification tank 21, the mixed oil gas in the second air inlet branch pipe 22 enters the air inlet cavity 212 through the air inlet 213, and sequentially passes through the plurality of activated carbon walls 216 and the purification cavity 218 between two adjacent activated carbon walls 216 to reach the air outlet cavity 214, the activated carbon walls 216 can adsorb organic matters and oil in the oil-liquid mixed gas, and the clean gas enters the air outlet 215 from the air outlet cavity 214 and is then discharged from the second air outlet branch pipe 24 and the exhaust pipe 13.
The gas to be analyzed is vacuumized by a vacuum pump 26, the purification cavity 218 and the gas outlet cavity 214 are vacuumized by a vacuumizing pipeline 21, the pumped gas enters the shallow cooling device 3 through a second gas conveying pipe 8, the shallow cooling device controls the temperature of the mixed oil gas to be between minus 30 ℃ and minus 37 ℃ for shallow cooling condensation, then the mixed oil gas enters the deep cooling device 4 through a third gas conveying pipe 9, the deep cooling heat exchanger 41 controls the temperature of the mixed oil gas to be between minus 75 ℃ and minus 95 ℃ for deep cooling condensation, then the mixed oil gas is conveyed into the liquid storage tank 5 through a second liquid conveying pipe 12 for final collection, a small amount of oil gas flows back into the first gas conveying pipe 7 through a gas return pipe 10, and the mixed oil gas after initial precooling is conveyed into the active carbon purification vacuum analysis device 2 together.
The VOC gas active carbon adsorption comprehensive treatment system is compact in structure, a surface cooling heat exchanger in a precooling device, an active carbon purification tank in an active carbon adsorption device, a shallow cooling heat exchanger in the shallow cooling device and a deep cooling heat exchanger in the deep cooling device are all designed in a parallel double-body structure, any one monomer can be switched to another monomer for use after being damaged, online maintenance and replacement can be realized, the work efficiency is not delayed, the replacement is convenient, meanwhile, the active carbon purification tank adopts a structure of absorbing and vacuumizing simultaneously, mixed oil gas can be actively analyzed, the adsorption is more sufficient, the purification effect is good, in addition, a heat exchange coil is adopted in the active carbon wall to be connected with a heat exchange unit, incomplete absorption can occur when the temperature is higher than 32 ℃ in summer, the heat exchange unit connected with the heat exchange coil adopts a refrigerating unit, and the temperature of the active carbon wall can be reduced, the absorption effect of the activated carbon wall body is ensured. In winter, when the temperature is lower than 0 ℃, the exchange liquid is easy to freeze, and the heat exchange unit connected with the heat exchange coil adopts a heating unit, so that the temperature of the activated carbon wall can be controlled to be more than 10 ℃, the exchange adsorption effect is ensured, and the national discharge standard of VOC gas is met.
Claims (6)
- VOC gaseous active carbon adsorption integrated processing system, its characterized in that: the method comprises the following steps: precooling apparatus (1), active carbon purification vacuum analytical apparatus (2), shallow cooling apparatus (3), cryogenic device (4) and liquid storage pot (5), the one end of precooling apparatus (1) is connected with oil gas intake pipe (6), the other end of precooling apparatus (1) is connected with active carbon purification vacuum analytical apparatus (2) through first gas-supply pipe (7), active carbon purification vacuum analytical apparatus (2) is connected with shallow cooling apparatus (3) through second gas-supply pipe (8), shallow cooling apparatus (3) is connected with cryogenic device (4) through third gas-supply pipe (9), cryogenic device (4) is connected with first gas-supply pipe (7) through muffler (10), shallow cooling apparatus (3) still is connected with cryogenic device (4) through first gas-supply pipe (11), cryogenic device (4) is connected with liquid storage pot (5) through second transfer line (12), an exhaust pipe (13) is arranged on the active carbon purification vacuum analysis device (2).
- 2. A VOC gas activated carbon adsorption integrated processing system according to claim 1, wherein: the active carbon purification vacuum analysis device (2) comprises two active carbon purification tanks (21) which are arranged in parallel, one ends of the two active carbon purification tanks (21) are respectively connected with a first gas pipe (7) through second gas inlet branch pipes (22), first stop valves (23) are respectively arranged on the two second gas inlet branch pipes (22), the other ends of the two active carbon purification tanks (21) are respectively connected with a gas exhaust pipe (13) through second gas outlet branch pipes (24), second stop valves (25) are respectively arranged on the two second gas outlet branch pipes (24), a vacuum pump (26) is arranged between the middle parts of the two active carbon purification tanks (21), the gas exhaust ports of the vacuum pump (26) are respectively connected with the two active carbon purification tanks (21) through gas exhaust pipes (27), and third stop valves (28) are respectively arranged on the two gas exhaust pipes (27), and the air outlet of the vacuum pump (26) is connected with the second air conveying pipe (8).
- 3. A VOC gas activated carbon adsorption integrated processing system according to claim 2, wherein: the precooling device (1) comprises two meter cooling heat exchangers (111) which are arranged in parallel, one ends of the two meter cooling heat exchangers (111) are respectively connected with the oil gas inlet pipe (6) through first gas inlet branch pipes (112), and the other ends of the two meter cooling heat exchangers (111) are respectively connected with first gas conveying pipes (7) through first gas outlet branch pipes (113).
- 4. A VOC gas activated carbon adsorption integrated processing system according to claim 3, wherein: the structure of the activated carbon purification tank (21) comprises: the air purification device comprises a purification tank body (211), wherein an air inlet cavity (212) is arranged in one end of the purification tank body (211), the air inlet cavity (212) is connected with a second air inlet branch pipe (22) through an air inlet (213), an air outlet cavity (214) is arranged in the other end of the purification tank body (211), the air outlet cavity (214) is connected with a second air outlet branch pipe (24) through an air outlet (215), a plurality of activated carbon wall bodies (216) are uniformly arranged in the purification tank body (211) between the air inlet cavity (212) and the air outlet cavity (214), heat exchange coils (217) are respectively arranged in the activated carbon wall bodies (216), the activated carbon wall bodies (216) are extended out from two ends of each heat exchange coil (217) to be connected with a heat exchanger unit, and purification cavities (218) are respectively arranged in the purification tank body (211) between two adjacent activated carbon wall bodies (216), and a vacuum pumping pipeline (219) connected with the air pumping pipe (27) is respectively arranged in the purification cavity (218) and the air outlet cavity (214).
- 5. A VOC gas activated carbon adsorption integrated processing system according to claim 4, wherein: the heat exchanger unit adopts a heating unit.
- 6. A VOC gas activated carbon adsorption integrated processing system according to claim 4, wherein: the heat exchange unit adopts a refrigerating unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921430196.2U CN210964511U (en) | 2019-08-30 | 2019-08-30 | VOC gas active carbon adsorption comprehensive treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921430196.2U CN210964511U (en) | 2019-08-30 | 2019-08-30 | VOC gas active carbon adsorption comprehensive treatment system |
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| CN210964511U true CN210964511U (en) | 2020-07-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110508096A (en) * | 2019-08-30 | 2019-11-29 | 盐城明天和创环保节能科技有限公司 | VOC gas activated carbon adsorption total system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110508096A (en) * | 2019-08-30 | 2019-11-29 | 盐城明天和创环保节能科技有限公司 | VOC gas activated carbon adsorption total system |
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