CN112870909A - VOC waste gas recovery collecting system - Google Patents
VOC waste gas recovery collecting system Download PDFInfo
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- CN112870909A CN112870909A CN202110092249.XA CN202110092249A CN112870909A CN 112870909 A CN112870909 A CN 112870909A CN 202110092249 A CN202110092249 A CN 202110092249A CN 112870909 A CN112870909 A CN 112870909A
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- activated carbon
- fixedly connected
- carbon adsorption
- liquid nitrogen
- adsorption tank
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- 238000011084 recovery Methods 0.000 title claims abstract description 45
- 239000002912 waste gas Substances 0.000 title claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 112
- 238000001179 sorption measurement Methods 0.000 claims abstract description 60
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 137
- 239000007788 liquid Substances 0.000 claims description 98
- 229910052757 nitrogen Inorganic materials 0.000 claims description 63
- 238000009833 condensation Methods 0.000 claims description 39
- 230000005494 condensation Effects 0.000 claims description 39
- 239000007789 gas Substances 0.000 claims description 34
- 239000002699 waste material Substances 0.000 claims description 29
- 229910052799 carbon Inorganic materials 0.000 claims description 20
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 11
- 238000012546 transfer Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 abstract description 2
- 239000012855 volatile organic compound Substances 0.000 description 41
- 238000003795 desorption Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0033—Other features
- B01D5/0051—Regulation processes; Control systems, e.g. valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0078—Condensation of vapours; Recovering volatile solvents by condensation characterised by auxiliary systems or arrangements
- B01D5/009—Collecting, removing and/or treatment of the condensate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/40096—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating by using electrical resistance heating
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a VOC waste gas recovery and collection system, which comprises an activated carbon adsorption tank, wherein the left side of the activated carbon adsorption tank is fixedly connected with an air inlet filter cylinder, the outer surface of the air inlet filter cylinder is fixedly connected with an air inlet electric vacuum valve, the activated carbon adsorption tank is provided with a system electric control box, the right side of the activated carbon adsorption tank is fixedly connected with a vacuum air pump, an air exhaust electric vacuum valve is arranged between the activated carbon adsorption tank and the vacuum air pump, the upper part of the activated carbon adsorption tank is fixedly connected with an electric heater, the upper surface of the activated carbon adsorption tank is fixedly connected with a first temperature sensor, the upper surface of the activated carbon adsorption tank is fixedly connected with an air pressure sensor, the VOC waste gas recovery and collection system can condense and recover a recyclable organic solvent, in addition, harmful components in waste gas are cleaned, the emission standard is reached, and the harm to the environment is reduced to the greatest extent, it has reasonable structure, safety and reliability.
Description
Technical Field
The invention relates to the technical field of industrial waste gas recovery, in particular to a VOC waste gas recovery and collection system.
Background
Volatile organic compounds, VOC for short. With the rapid development of industrial economy, the discharge amount of VOC is larger and larger, the air environment is seriously polluted, and the living environment of people is influenced, so the national emission standard for the treatment of VOC is stricter and stricter.
Most of the existing VOC recycling technology is to adsorb VOC gas through active carbon, the active carbon is saturated in adsorption, the active carbon is periodically replaced, and the active carbon is handed to enterprises with treatment qualification for treatment, so that the method is high in cost and cannot be recycled. And heating the activated carbon with saturated adsorption under the protection of water vapor or other inert gases to perform VOC desorption, and condensing and recycling. The method needs additional water vapor or inert gas, has complex process and wastes resources.
Disclosure of Invention
The invention aims to provide a VOC waste gas recovery and collection system, which aims to solve the problems that the method for providing the existing recovery device in the background art is high in cost, cannot be recycled, can generate extra water vapor or inert gas, is complex in process and wastes resources.
In order to achieve the purpose, the invention provides the following technical scheme: a VOC waste gas recovery and collection system comprises an activated carbon adsorption tank, wherein the left side of the activated carbon adsorption tank is fixedly connected with an air inlet filter cylinder, the outer surface of the air inlet filter cylinder is fixedly connected with an air inlet electric vacuum valve, the activated carbon adsorption tank is provided with a system electric control box, the right side of the activated carbon adsorption tank is fixedly connected with a vacuum air pump, an air exhaust electric vacuum valve is arranged between the activated carbon adsorption tank and the vacuum air pump, the activated carbon adsorption tank is fixedly connected with an electric heater, the upper surface of the activated carbon adsorption tank is fixedly connected with a first temperature sensor, the upper surface of the activated carbon adsorption tank is fixedly connected with an air pressure sensor, a liquid nitrogen condensation recovery device is arranged behind the vacuum air pump, a liquid nitrogen tank is arranged in the liquid nitrogen condensation recovery device, the upper surface of the liquid nitrogen tank is provided with a liquid nitrogen outlet valve, and the left side of the liquid nitrogen outlet valve is provided with a liquid nitrogen, the utility model discloses a liquid nitrogen condensation recovery device, including liquid nitrogen condensation recovery device, VOC gas condensation pipeline, and VOC gas condensation pipeline's inside fixedly connected with second temperature sensor, second temperature sensor's right side is provided with the liquid nitrogen admission line, and the right side of liquid nitrogen admission line is provided with the nitrogen gas pipeline of giving vent to anger, liquid nitrogen condensation recovery device's inside fixedly connected with waste liquid storage storehouse, and the upper end fixedly connected with waste liquid in waste liquid storage storehouse collects the valve to the lower extreme fixedly connected with waste liquid collection valve in waste liquid storage storehouse, the upper end of active carbon adsorption jar is connected with the electronic vacuum valve of giving vent to anger, and is connected with the fan of airing exhaust on the electronic vacuum valve of giving.
Preferably, the air inlet electric vacuum valve, the air outlet electric vacuum valve and the air exhaust electric vacuum valve are internally provided with sealing gaskets.
Preferably, the activated carbon adsorption tank is internally provided with activated carbon, and the electric heater is fixedly connected to the lower surface of the inside of the activated carbon adsorption tank.
Preferably, the pipe orifice at the upper end of the activated carbon adsorption tank is connected with an exhaust fan.
Preferably, the inside fixedly connected with transfer line of liquid nitrogen condensation recovery unit, and second temperature sensor, liquid nitrogen admission line and nitrogen gas pipeline fixed connection of giving vent to anger are in transfer line's upper end to the waste liquid collects the valve setting at transfer line and waste liquid storage storehouse.
Preferably, the liquid nitrogen pressure gauge is fixedly connected to the upper surface of the liquid nitrogen tank.
Preferably, the electric heaters are uniformly distributed in the activated carbon adsorption tank, and the spacing distances between the electric heaters are the same.
Preferably, the VOC gas condensation pipeline is formed between the liquid conveying pipelines in a spiral structure, and the VOC gas condensation pipeline is provided with a liquid outlet.
Compared with the prior art, the invention has the beneficial effects that: this VOC waste gas recovery collecting system can condense and retrieve circulated organic solvent, clears up the harmful ingredient in the waste gas in addition, reaches emission standard, and the at utmost reduces environmental hazard nature, its rational in infrastructure, safe and reliable:
1. the invention is divided into two units of a VOC gas adsorption unit and a VOC gas vacuum condensation recovery unit, the functions of the two units are changed by opening and closing three vacuum electric valves, the time division is clear when the VOC gas is treated, and the control is simple and convenient;
2. according to the invention, the VOC gas is adsorbed by the activated carbon, the temperature in the adsorption pipe is controlled by controlling the start and stop of the heater by the temperature sensor, the VOC gas is desorbed on the basis of not influencing the activity of the activated carbon, the degree of automation and intelligent control is high, and the resource utilization of the activated carbon is saved;
3. the invention adopts the vacuum air pump to pump away the air in the adsorption tank, so that the interior of the adsorption tank reaches a vacuum environment, thereby being beneficial to the desorption of the VOC gas and avoiding the explosion risk of the VOC gas at high temperature, and having simple and safe operation;
4. the condensation recovery device provided by the invention adjusts the condensation recovery temperature by monitoring the temperature feedback of the liquid nitrogen temperature sensor in the condensation tank and controlling the opening of the electric vacuum valve for releasing the liquid nitrogen, has higher intelligence, and can effectively recycle high-value VOC.
Drawings
FIG. 1 is a view of a VOC waste gas recovery and collection system provided by the present invention;
FIG. 2 is an enlarged view of point A of FIG. 1 according to the present invention;
FIG. 3 is a top view of a system provided by the present invention;
FIG. 4 is a structural diagram of an internal pipeline of the liquid nitrogen condensation and recovery device provided by the invention;
FIG. 5 is a schematic left sectional view of the electric intake vacuum valve according to the present invention.
In the figure: 1. an air intake filter cartridge; 2. an intake electric vacuum valve; 3. an activated carbon adsorption tank; 4. a system electric control box; 5. an exhaust fan; 6. a liquid nitrogen condensing and recycling device; 7. a liquid nitrogen tank; 8. a liquid nitrogen pressure gauge; 9. a vacuum pump; 10. an electric heater; 11. a first temperature sensor; 12. an air pressure sensor; 13. an air outlet electric vacuum valve; 14. an electric vacuum valve for air suction; 15. a liquid nitrogen gas outlet valve; 21. a second temperature sensor; 22. a liquid nitrogen inlet pipe; 23. a nitrogen outlet pipeline; 24. a VOC gas condensing conduit; 25. a waste liquid collection valve; 26. a waste liquid collection valve; 27. waste liquid storage storehouse.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a VOC waste gas recovery and collection system comprises an air inlet filter cylinder 1, an air inlet electric vacuum valve 2, an active carbon adsorption tank 3, a system electric control box 4, an exhaust fan 5, a liquid nitrogen condensation recovery device 6, a liquid nitrogen tank 7, a liquid nitrogen pressure gauge 8, a vacuum air pump 9, an electric heater 10, a first temperature sensor 11, an air pressure sensor 12, an air outlet electric vacuum valve 13, an air outlet electric vacuum valve 14, a liquid nitrogen air outlet valve 15, a second temperature sensor 21, a liquid nitrogen air inlet pipeline 22, a nitrogen air outlet pipeline 23, a VOC gas condensation pipeline 24, a waste liquid collecting valve 25, a waste liquid collecting valve 26 and a waste liquid storage bin 27, wherein the air inlet filter cylinder 1 is fixedly connected to the left side of the active carbon adsorption tank 3, the air inlet electric vacuum valve 2 is fixedly connected to the outer surface of the air inlet filter cylinder 1, the system electric control box 4 is arranged on the active carbon adsorption tank 3, the vacuum air pump 9 is fixedly connected to the right side, an air exhaust electric vacuum valve 14 is arranged between the active carbon adsorption tank 3 and the vacuum air pump 9, an electric heater 10 is fixedly connected to the upper part of the active carbon adsorption tank 3, a first temperature sensor 11 is fixedly connected to the upper surface of the active carbon adsorption tank 3, an air pressure sensor 12 is fixedly connected to the upper surface of the active carbon adsorption tank 3, a liquid nitrogen condensation recovery device 6 is arranged behind the vacuum air pump 9, a liquid nitrogen tank 7 is arranged in the liquid nitrogen condensation recovery device 6, a liquid nitrogen outlet valve 15 is arranged on the upper surface of the liquid nitrogen tank 7, a liquid nitrogen pressure gauge 8 is arranged on the left side of the liquid nitrogen outlet valve 15, a VOC gas condensation pipeline 24 is fixedly connected to the inside of the liquid nitrogen condensation recovery device 6, a second temperature sensor 21 is fixedly connected to the inside of the VOC condensation pipeline 24, a liquid nitrogen inlet pipeline 22 is arranged on the right side of the second temperature sensor 21, and a nitrogen outlet pipeline 23 is arranged on the right, the inside fixedly connected with waste liquid storage storehouse 27 of liquid nitrogen condensation recovery unit 6, and the upper end fixedly connected with waste liquid of waste liquid storage storehouse 27 collects valve 25 to valve 26 is collected to the lower extreme fixedly connected with waste liquid of waste liquid storage storehouse 27, and the upper end of activated carbon adsorption jar 3 is connected with the electronic vacuum valve 13 of giving vent to anger, and is connected with air exhaust fan 5 on the electronic vacuum valve 13 of giving vent to anger.
The inside of admitting air electronic vacuum valve 2, the electronic vacuum valve 13 of giving vent to anger and the electronic vacuum valve 14 of bleeding is provided with sealed the pad, can be convenient for guarantee that the electronic vacuum valve 2 of admitting air, the electronic vacuum valve 13 of giving vent to anger and the electronic vacuum valve 14's of bleeding gas tightness is good for when the lower vacuum state of the inside atmospheric pressure of adsorption tanks, can not lead to the air in the pipeline to get into in the adsorption tanks, the electric operation degree of automation is higher.
The inside active carbon that is equipped with of active carbon adsorption jar 3, and electric heater 10 fixed connection is at the lower surface of the inside of active carbon adsorption jar 3, can be convenient for adsorb VOC gas.
The mouth of pipe setting of the upper end of active carbon adsorption jar 3 is connected with air exhaust fan 5, can be convenient for when adsorbing VOC, air exhaust fan 5 operation produces the negative pressure and discharges the pure air after the absorption to the atmosphere.
The inside fixedly connected with transfer line of liquid nitrogen condensation recovery unit 6, and second temperature sensor 21, liquid nitrogen admission line 22 and nitrogen gas outlet pipe 23 fixed connection are in the upper end of transfer line to the waste liquid collects valve 25 and sets up at transfer line and waste liquid storage storehouse 27, can be convenient for can be stable carry the liquid nitrogen in liquid nitrogen condensation recovery unit 6.
The liquid nitrogen pressure gauge 8 is fixedly connected to the upper surface of the liquid nitrogen tank 7, and can be used for conveniently detecting the pressure of liquid nitrogen inside the liquid nitrogen tank 7.
The working principle is as follows: when adsorbing VOC gas, the air inlet electric vacuum valve 2 and the air outlet electric vacuum valve 13 are both opened, the exhaust fan 5 runs, industrial waste gas enters the activated carbon adsorption tank 3 through the air inlet electric vacuum valve 2, VOC in the waste gas is adsorbed and treated by activated carbon, and the remaining pure air is discharged to the atmosphere through the air outlet electric vacuum valve 13 by the exhaust fan 5;
when the VOC gas is recovered, the air inlet electric vacuum valve 2 and the air outlet electric vacuum valve 13 are both closed, the air exhaust electric vacuum valve 14 is opened, the vacuum air pump 9 and the liquid nitrogen condensation recovery device 6 run, the air pressure value in the active carbon adsorption tank 3 is reduced to the preset value, then the electric heater 10 is started and stopped under the control of the temperature feedback value of the first temperature sensor 11, and the active carbon adsorption activity loss during the overhigh temperature is prevented. Under the combined action of high temperature and vacuum environment, VOC gas quickly desorbs active carbon and enters a liquid nitrogen condensation recovery device 6 to be recycled;
when the system works, the system electric control box 4 recovers and collects the whole VOC waste gas, and the interior of the system electric control box is composed of a PLC module and an electric element, so that the whole system is controlled to automatically run, the start and stop of the electric heater 10 can be automatically controlled according to the temperature value fed back by the first temperature sensor 11, and the desorption temperature of the activated carbon in the adsorption tank is well controlled;
according to the air pressure feedback value of the air pressure sensor 12, whether the vacuum degree environment is good or not is judged, VOC gas desorption is carried out, condensation in the liquid nitrogen condensation recovery device 6 is adjusted according to the temperature value fed back by the second temperature sensor 21 and the opening degree of the liquid nitrogen gas outlet valve 15 and can be set by the temperature, and the content which is not described in detail in the specification belongs to the prior art which is well known by persons skilled in the art.
It is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of convenience and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and are not to be considered limiting of the scope of the present invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a VOC waste gas recovery collecting system, includes activated carbon adsorption jar (3), its characterized in that: the left side of the activated carbon adsorption tank (3) is fixedly connected with an air inlet filter cylinder (1), the outer surface of the air inlet filter cylinder (1) is fixedly connected with an air inlet electric vacuum valve (2), a system electric control box (4) is arranged on the activated carbon adsorption tank (3), the right side of the activated carbon adsorption tank (3) is fixedly connected with a vacuum air pump (9), an air exhaust electric vacuum valve (14) is arranged between the activated carbon adsorption tank (3) and the vacuum air pump (9), an electric heater (10) is fixedly connected to the upper part of the activated carbon adsorption tank (3), the upper surface of the activated carbon adsorption tank (3) is fixedly connected with a first temperature sensor (11), an air pressure sensor (12) is fixedly connected to the upper surface of the activated carbon adsorption tank (3), a liquid nitrogen condensation recovery device (6) is arranged behind the vacuum air pump (9), and a liquid nitrogen tank (7) is arranged in the liquid nitrogen condensation recovery device (6), the upper surface of the liquid nitrogen tank (7) is provided with a liquid nitrogen gas outlet valve (15), the left side of the liquid nitrogen gas outlet valve (15) is provided with a liquid nitrogen pressure gauge (8), the inside of the liquid nitrogen condensation recovery device (6) is fixedly connected with a VOC gas condensation pipeline (24), the inside of the VOC gas condensation pipeline (24) is fixedly connected with a second temperature sensor (21), the right side of the second temperature sensor (21) is provided with a liquid nitrogen gas inlet pipeline (22), the right side of the liquid nitrogen gas inlet pipeline (22) is provided with a nitrogen gas outlet pipeline (23), the inside of the liquid nitrogen condensation recovery device (6) is fixedly connected with a waste liquid storage bin (27), the upper end of the waste liquid storage bin (27) is fixedly connected with a waste liquid collecting valve (25), the lower end of the waste liquid storage bin (27) is fixedly connected with a waste liquid collecting valve (26), the upper end of the active carbon adsorption tank (3) is connected with an, and the air outlet electric vacuum valve (13) is connected with an air exhaust fan (5).
2. A VOC exhaust gas recovery collection system according to claim 1 wherein: and sealing gaskets are arranged in the air inlet electric vacuum valve (2), the air outlet electric vacuum valve (13) and the air exhaust electric vacuum valve (14).
3. A VOC exhaust gas recovery collection system according to claim 1 wherein: the activated carbon adsorption tank (3) is internally provided with activated carbon, and the electric heater (10) is fixedly connected to the lower surface of the inside of the activated carbon adsorption tank (3).
4. A VOC exhaust gas recovery collection system according to claim 1 wherein: and an air exhaust fan (5) is arranged and connected at a pipe orifice at the upper end of the activated carbon adsorption tank (3).
5. A VOC exhaust gas recovery collection system according to claim 1 wherein: the inside fixedly connected with transfer line of liquid nitrogen condensation recovery unit (6), and second temperature sensor (21), liquid nitrogen admission line (22) and nitrogen gas outlet pipe way (23) fixed connection are in the upper end of transfer line to waste liquid collects valve (25) and sets up at transfer line and waste liquid storage storehouse (27).
6. A VOC exhaust gas recovery collection system according to claim 1 wherein: and the liquid nitrogen pressure gauge (8) is fixedly connected to the upper surface of the liquid nitrogen tank (7).
7. A VOC exhaust gas recovery collection system according to claim 1 wherein: the electric heaters (10) are uniformly distributed in the activated carbon adsorption tank (3), and the spacing distances among the electric heaters (10) are the same.
8. A VOC exhaust gas recovery collection system according to claim 1 wherein: the VOC gas condensation pipeline (24) is formed between the liquid conveying pipelines in a spiral structure, and 2 liquid outlets are formed in the VOC gas condensation pipeline (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110092249.XA CN112870909A (en) | 2021-01-23 | 2021-01-23 | VOC waste gas recovery collecting system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110092249.XA CN112870909A (en) | 2021-01-23 | 2021-01-23 | VOC waste gas recovery collecting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114405222A (en) * | 2021-11-26 | 2022-04-29 | 南通众益鑫化工有限公司 | Novel compound tail gas absorption is handled and is used recovery device |
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2021
- 2021-01-23 CN CN202110092249.XA patent/CN112870909A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE4013409A1 (en) * | 1990-04-26 | 1991-10-31 | Teschlade Johannes Bernhard Di | Multistage condensation plant for removing wastes from exhaust air - plants removes solvents and volatile materials from air from the cleaning of tanks and road tankers |
| CN203803328U (en) * | 2014-05-14 | 2014-09-03 | 宁波弘景环保科技有限公司 | Organic solvent waste gas processing system |
| CN104028075A (en) * | 2014-05-31 | 2014-09-10 | 蔡博 | Device and process for recycling organic gas through low-pressure dry-type indirect heating desorption |
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| CN114405222A (en) * | 2021-11-26 | 2022-04-29 | 南通众益鑫化工有限公司 | Novel compound tail gas absorption is handled and is used recovery device |
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