CN220715321U - Discontinuous VOC waste gas treatment device - Google Patents
Discontinuous VOC waste gas treatment device Download PDFInfo
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- CN220715321U CN220715321U CN202322142594.7U CN202322142594U CN220715321U CN 220715321 U CN220715321 U CN 220715321U CN 202322142594 U CN202322142594 U CN 202322142594U CN 220715321 U CN220715321 U CN 220715321U
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- 239000002912 waste gas Substances 0.000 title claims abstract description 61
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 110
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 68
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000003795 desorption Methods 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000010887 waste solvent Substances 0.000 claims abstract description 24
- 238000001179 sorption measurement Methods 0.000 claims abstract description 17
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 16
- 238000011049 filling Methods 0.000 claims abstract description 14
- 238000004880 explosion Methods 0.000 claims abstract description 12
- 238000003860 storage Methods 0.000 claims abstract description 11
- 238000005485 electric heating Methods 0.000 claims abstract description 10
- 238000013022 venting Methods 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 28
- 238000005338 heat storage Methods 0.000 claims description 24
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 238000007664 blowing Methods 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 abstract description 8
- 239000012855 volatile organic compound Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 238000005265 energy consumption Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000008030 elimination Effects 0.000 description 4
- 238000003379 elimination reaction Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012824 chemical production Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000002688 persistence Effects 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002894 chemical waste Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004200 deflagration Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Incineration Of Waste (AREA)
Abstract
The waste gas source is communicated with an exhaust fan, an emergency discharge valve, an air inlet valve, a explosion venting piece and a water seal protection tank, and the output end of the water seal protection tank is communicated with a flame arrester, an waste gas blower and a peak-eliminating and valley-filling device; the peak-load eliminating device comprises an active carbon adsorption device and a nitrogen desorption device; the active carbon adsorption device comprises a carbon tank group, wherein the carbon tank group comprises a carbon tank A, a carbon tank B, a carbon tank C, a carbon tank D and a carbon tank E, the carbon tank group is respectively communicated with a nitrogen circulating desorption fan and an explosion-proof electric heating chamber, and a condensing fan is arranged before the output of the nitrogen circulating desorption fan and the explosion-proof electric heating chamber is communicated with a chilled water heat exchange condensing device and a chilled water heat exchange condensing device through pipelines; the output end of the chilled water heat exchange condensing device is communicated with the three combustion chambers RTO through a waste solvent storage tank, and a waste solvent burner is arranged at the position where the waste solvent storage tank is connected with the three combustion chambers RTO; the carbon tank C is sequentially communicated with the RTO fan and the flame arrester, and the output end of the flame arrester is communicated with the regenerator A, the regenerator B and the regenerator C in parallel.
Description
Technical Field
The utility model relates to the technical field of VOC waste gas, in particular to a discontinuous VOC waste gas treatment device.
Background
When the tail gas similar to the chemical reaction kettle is treated, the exhaust gas of the reaction kettle is not continuous, the exhaust time of each reaction kettle is concentrated, the exhaust is complete within 10 minutes, the rest of the reaction kettle can not be exhausted for a long time, and the exhaust gas is exhausted when the next exhaust is needed; in the chemical production process, a plurality of reaction kettles are arranged, and the reaction kettles can have a plurality of conditions of 1 exhaust, 2 simultaneous exhausts, a plurality of simultaneous exhausts and the like, and can also have the condition that the reaction kettles are not in exhaust; under the working condition, the VOC concentration in the concentrated collected waste gas can be greatly fluctuated, and the emission has no obvious rule;
when the exhaust is concentrated, the VOC concentration is extremely high, and can exceed one fourth of the explosion lower limit of the exhaust gas, namely 25 percent LEL, so that the safety risk exists and the processing capacity of back-end equipment is also exceeded; when the reaction kettle has small exhaust amount and even no exhaust, the concentration of the exhaust gas is very low, which is lower than the energy consumption required by the RTO to maintain the operation of the reaction kettle, and additional fuel is required; if the concentration of the waste gas under the working condition is not subjected to peak elimination treatment, the safety risk is extremely high; at present, the pretreatment modes of the waste gas mainly comprise the following modes:
(1) Pre-condensing the waste gas, and controlling the concentration of the waste gas entering the RTO by controlling the condensing temperature; the method is only suitable for the conditions of higher boiling point and smaller air quantity (generally less than 2000 m) 3 /h) because of the great energy consumption of condensation, there are limitations in application;
(2) The waste gas is adsorbed, the hot air is adopted for desorption after the adsorption, the desorbed waste gas enters RTO, when the low concentration is improved, the concentration of the waste gas entering the RTO can be improved, and the energy consumption of the RTO when the low concentration is reduced; however, the method is only suitable for the situation that the distribution of high concentration and low concentration is more regular, because the desorption of the activated carbon can only be concentrated under the situation that the concentration of the waste gas is lower; safety risks may occur if the desorbed exhaust gas and the high concentration exhaust gas enter the RTO together, however, the emission in most chemical industries is irregular, so the application of the method is limited;
(3) Washing with water; the method is only suitable for the condition that VOC components in the waste gas are dissolved in water and the peak concentration of the waste gas is not very high, and has limitation in application;
in the prior art, application number 2022226290284 discloses VOC waste gas treatment equipment, which is convenient for workers to clean a filter screen in a filter frame and for workers to replace an active carbon plate;
application number 2022202587104 discloses VOCs waste gas treatment equipment, which has a plurality of treatment technologies such as combustion treatment, biological treatment, spray treatment, ultraviolet oxidation treatment and the like, and is wide in application range, and the application number is convenient for absorbing untreated organic substances and inorganic substances through an activated carbon fiber block, a silica gel ventilation sleeve, a first biochar column and a second biochar column, so that the emission standard of waste gas is improved, and the practicability is strong;
the prior art does not relate to the treatment of discontinuous exhaust gas, how to solve the discontinuous waste gas treatment with large concentration difference, lacks proper technical treatment measures, causes the back-end equipment to overload operation, does not reach the exhaust gas standard or causes the equipment to be scrapped in advance, and needs improvement, so that a discontinuous VOC waste gas treatment device is needed to overcome the technical defects.
Disclosure of Invention
In view of the above, the present utility model is directed to providing a discontinuous VOC exhaust gas treatment apparatus, which solves the problem of the influence of the concentration variation of the VOC exhaust gas treatment engineering on the back-end treatment equipment; when the concentration of the waste gas is high, the waste gas directly enters the RTO, so that the safety risk exists, and the active carbon system adsorbs excessive VOC components in the waste gas to play a role in removing peak value of the concentration of the waste gas; when the concentration of the waste gas is low, the VOC concentration in the waste gas is insufficient to meet the self energy consumption of the RTO, and at the moment, the waste solvent after the activated carbon is adsorbed and condensed is used as fuel to be supplemented into the RTO to play a role in filling grains with the concentration of the waste gas; the method has the effects of eliminating peak and filling valley for the change of the concentration of the waste gas, ensures the safe operation of the back-end RTO equipment and reduces the operation energy consumption.
The present application aims to solve one of the problems in the background art.
The technical scheme adopted by the utility model is that in order to achieve the above purpose and other related purposes, the following technical scheme is provided:
in chemical production, the exhaust of the vacuum pump and the reaction kettle is intermittent, and when the process equipment is opened, the exhaust concentration is high and exceeds the treatment capacity of RTO; when the process equipment is not exhausted, the concentration of the exhaust gas is low, RTO can not even maintain spontaneous combustion, and a large amount of energy sources need to be supplemented; in order to overcome the peak working condition of the application, the application arranges a set of peak eliminating and valley filling device at the front end of the RTO to realize the purposes of peak eliminating and valley filling;
a discontinuous VOC waste gas treatment device is characterized in that a waste gas source is sequentially communicated with an exhaust fan, an emergency discharge valve, an air inlet valve, a explosion venting piece and a water seal protection tank, and the output end of the water seal protection tank is communicated with a flame arrester, a waste gas blower and a peak-eliminating and valley-filling device;
the peak-load eliminating device comprises an active carbon adsorption device and a nitrogen desorption device;
the active carbon adsorption device comprises a carbon tank group, wherein the carbon tank group comprises a carbon tank A, a carbon tank B, a carbon tank C, a carbon tank D and a carbon tank E, the carbon tank group is respectively communicated with a nitrogen circulating desorption fan and an explosion-proof electric heating chamber, the output of the nitrogen circulating desorption fan and the explosion-proof electric heating chamber is communicated with a chilled water heat exchange condensing device through at least one pipeline, and a condensing fan is arranged before the at least one pipeline is communicated with the chilled water heat exchange condensing device;
the output end of the chilled water heat exchange condensing device is communicated with the three combustion chambers RTO through a waste solvent storage tank, and a waste solvent burner is arranged at the position where the waste solvent storage tank is connected with the three combustion chambers RTO;
the carbon tank C is sequentially communicated with the RTO fan and the flame arrester, and the output end of the flame arrester is communicated with the regenerator A, the regenerator B and the regenerator C in parallel.
The application provides a technical scheme still has following technical feature:
preferably, the output ends of the heat storage chamber A, the heat storage chamber B and the heat storage chamber C are sequentially communicated with the high-temperature mixing chamber and the chimney.
Preferably, the three-combustion-chamber RTO is connected with a regenerator A, a regenerator B and a regenerator C, and the output end of the three-combustion-chamber RTO is communicated with an emergency temperature release valve, a high-temperature mixing chamber and a chimney.
Preferably, an emergency discharge valve, an air inlet valve and a fresh air valve are sequentially arranged between the carbon tank C and the RTO fan.
Preferably, a gas burner is arranged on the three-chamber RTO.
Preferably, the three-chamber RTO is provided with a explosion venting port.
Preferably, the air inlet pipelines of the heat storage chamber A, the heat storage chamber B and the heat storage chamber C are connected with air inlet valves, the air outlet pipelines of the heat storage chamber A, the heat storage chamber B and the heat storage chamber C are connected with air outlet valves, the heat storage chamber A, the heat storage chamber B and the heat storage chamber C are communicated between the blowing fans, and blowing valves are arranged between the blowing fans and the blowing fans.
The utility model has the following beneficial effects:
the peak and valley filling device is additionally arranged at the front end of RTO equipment, the peak and valley filling device adopts an active carbon adsorption technology and a nitrogen desorption technology, and the waste solvent after desorption and condensation is used as the supplementary fuel of RTO;
the peak-eliminating and valley-filling device comprises an activated carbon adsorption device and a nitrogen desorption device, wherein the waste gas firstly enters activated carbon for adsorption treatment after being collected, so that the effect of eliminating peak values is achieved, the concentration of the waste gas entering RTO can be effectively treated, and the waste gas is safe and stable to operate; the activated carbon is operated in a mode of 3 absorption and 1 desorption for standby, 3 activated carbon tanks are used for absorption, and 2 activated carbon tanks are used for desorption and standby, so that the persistence of the peak eliminating effect of the activated carbon is ensured, and the number of specific activated carbon boxes is determined according to specific air quantity, components and concentration;
the active carbon is desorbed by adopting hot nitrogen, the desorbed high-concentration gas is condensed by adopting level 2, the VOC is condensed into liquid state, and the liquid state is stored in a waste solvent storage tank; when the concentration of the waste gas is low, the RTO cannot maintain spontaneous combustion, and fuel is required to be supplemented at the moment, so that the waste solvent can be combusted through a waste solvent burner and supplemented into the RTO, and the consumption of the natural gas at the moment is reduced; thereby achieving the effect of eliminating peak and filling valley of waste gas.
Drawings
FIG. 1 is a schematic diagram of a discontinuous VOC exhaust treatment device in accordance with the present utility model;
FIG. 2 is a schematic view of FIG. 1 rotated 90;
in the figure:
1. waste gas source
2. Water seal protective tank
3. Carbon tank group
4. Chilled water heat exchange condensing device
5. Three-combustor RTO
6. Chimney
31. Carbon tank A
32. Carbon tank B
33. Carbon tank C
34. Carbon tank D
35. Carbon tank E
51. Regenerator A
52. Regenerator B
53. Regenerator C
54. Blowing machine
55. Purge valve
56. Emergency temperature release valve
61. High temperature mixing chamber
101. Exhaust fan
102. Emergency discharge valve
103. Air inlet valve
104. Explosion venting sheet
201. Flame arrester
202. Exhaust air blower
301. Explosion-proof electric heating chamber
302. Nitrogen gas circulation desorption fan
303. RTO fan
304. Flame arrester
401. Waste solvent storage tank
402. Condensing fan
403. Waste solvent burner
404. A gas burner.
Detailed Description
The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present utility model and are not intended to be limiting.
In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
As shown in fig. 1 and 2, a discontinuous VOC waste gas treatment device is provided, wherein a waste gas source 1 is sequentially communicated with an exhaust fan 101, an emergency discharge valve 102, an air inlet valve 103, a explosion venting piece 104 and a water-sealed protective tank 2, and the output end of the water-sealed protective tank 2 is communicated with a flame arrester 201, a waste gas blower 202 and a peak-eliminating and valley-filling device;
the peak-load eliminating device comprises an active carbon adsorption device and a nitrogen desorption device;
the activated carbon adsorption device comprises a carbon tank group 3, wherein the carbon tank group 3 comprises a carbon tank A31, a carbon tank B32, a carbon tank C33, a carbon tank D34 and a carbon tank E35, the carbon tank group 3 is respectively communicated with a nitrogen gas circulation desorption fan 302 and an explosion-proof electric heating chamber 301, the output of the nitrogen gas circulation desorption fan 302 and the output of the explosion-proof electric heating chamber 301 are communicated with a chilled water heat exchange condensing device 4 through at least one pipeline, and a condensing fan 402 is arranged before the at least one pipeline is communicated with the chilled water heat exchange condensing device 4;
the output end of the chilled water heat exchange condensing device 4 is communicated with a three-combustion-chamber RTO5 through a waste solvent storage tank 401, and a waste solvent burner 403 is arranged at the position where the waste solvent storage tank 401 is connected with the three-combustion-chamber RTO 5;
the carbon tank C33 is sequentially communicated with the RTO fan 303 and the flame arrester 304, and the output end of the flame arrester 304 is communicated with the regenerator A51, the regenerator B52 and the regenerator C53 in parallel.
When the method is implemented, the water seal, the flame arrester and the safety measure of the explosion venting sheet are arranged on the pipeline at the front end of the active carbon, and the active carbon bed needs temperature detection to ensure safety; through peak elimination and valley filling, firstly, waste gas is collected by an active carbon adsorption device, and then enters active carbon for adsorption treatment, so that the effect of eliminating peaks is achieved, the concentration of waste gas entering RTO can be effectively treated, and the device is safe and stable to operate; the activated carbon is operated in a mode of 3 absorption and 1 removal for standby, 3 activated carbon tanks are used for absorption, and 2 activated carbon tanks are used for desorption and standby, so that the persistence of the peak eliminating effect of the activated carbon is ensured, and the number of specific activated carbon tanks is determined according to specific air quantity, components and concentration
Specifically, the output ends of the regenerators A51, B52 and C53 are sequentially communicated with the high-temperature mixing chamber 61 and the chimney 6; the three-combustion-chamber RTO5 is connected with a regenerator A51, a regenerator B52 and a regenerator C53, and the output end of the three-combustion-chamber RTO5 is communicated with an emergency temperature release valve 56, a high-temperature mixing chamber 61 and a chimney 6; an emergency discharge valve, an air inlet valve and a fresh air valve are sequentially arranged between the carbon tank C33 and the RTO fan 303; a gas burner 404 is arranged on the three-combustion-chamber RTO 5; the three combustion chambers RTO5 are provided with explosion venting ports; the air inlet pipelines of the heat storage chamber A51, the heat storage chamber B52 and the heat storage chamber C53 are connected with air inlet valves, the air outlet pipelines of the heat storage chamber A51, the heat storage chamber B52 and the heat storage chamber C53 are connected with air outlet valves, the heat storage chamber A51, the heat storage chamber B52 and the heat storage chamber C53 are communicated with the cleaning blower 54, and cleaning valves 55 are arranged between the cleaning blower 54;
the implementation process is as follows:
(1) The chemical waste gas is firstly discharged into 5 active carbon adsorption towers (3 is absorbed, 1 is removed, 1 is reserved for later use, the specific number is according to specific items) through an exhaust fan, and after the peak of the active carbon adsorption is eliminated, the waste gas enters RTO for thermal oxidation treatment;
(2) The exhaust gas enters the front end pipeline of the activated carbon tank and is required to be sequentially provided with an exhaust fan, an emergency exhaust valve, an air inlet cut-off valve, a explosion venting piece, a water seal protective tank, a flame arrester and a blower; the emergency discharge valve and the air inlet cut-off valve ensure that waste gas can be discharged in an emergency under abnormal conditions and does not enter the back-end equipment; the explosion venting sheet ensures that under abnormal conditions (such as explosion), the pressure of the pipeline is abnormally increased, and the pressure of the pipeline is timely released, so that equipment is protected; the water-sealed tank and the flame arrester belong to double insurance, and aim to protect front-end process equipment from being influenced under the conditions of deflagration, fire disaster and the like of rear-end equipment, and ensure safety; the fan is used for providing power for the waste gas;
(3) The waste gas enters an active carbon adsorption tower for pretreatment, the active carbon can adsorb VOC components in the waste gas, when the concentration of the waste gas reaches a peak, the active carbon can eliminate about 80-90% of peak concentration, and 10-20% of the waste gas safely enters RTO treatment, so that the peak elimination aim is achieved;
(4) The activated carbon is adsorbed for a certain time, the peak eliminating capacity is reduced, and the activated carbon needs to be desorbed at the moment, and the application adopts hot nitrogen desorption, so that the hot nitrogen desorption has the advantages of recovering the waste solvent with low water content and being beneficial to subsequent utilization;
(5) The thermal nitrogen desorption flow is as follows: closing an exhaust valve of the carbon tank, and replacing air in the tank with nitrogen until the oxygen content of the gas in the carbon tank is less than 1%; after replacement, nitrogen gas is heated to about 120 ℃ by a nitrogen gas circulating desorption fan and explosion-proof electric heating, the nitrogen gas passes through an active carbon bed layer under the drive of the desorption fan, and the adsorbed VOC starts to be desorbed under the action of high temperature of the active carbon bed layer; under the condition that the VOC concentration in the nitrogen circulating air reaches a certain concentration, the condensing fan starts to work, a small amount of gas (generally 20% of desorption air quantity) is extracted from the high-concentration waste gas in the desorption pipeline through the condensing pipeline, the gas is condensed in two stages, the first stage is precooled through cooling water heat exchange, the second stage adopts a chilled water heat exchange condensing device, and the specific condensing temperature is determined according to VOC components; the condensed gas is returned to the desorption pipeline and heated to about 120 ℃ to continuously desorb the activated carbon; collecting the condensed waste solvent into a waste solvent storage tank;
(6) When the concentration of waste gas is very low, in order to reduce the consumption of RTO fuel gas, a set of waste solvent burner is arranged on RTO, and RTO heat can be provided by burning waste solvent, so that the effect of reducing RTO energy consumption at low concentration is achieved; the method and the device have the function of filling the valleys while eliminating the peaks;
(7) The waste gas after front-end activated carbon peak elimination treatment safely enters RTO treatment, and 3 tower RTO is taken as an example in the application;
(8) Two-stage LEL are installed before entering RTO, and the waste gas LEL before entering RTO is detected in real time, so that the concentration of the waste gas entering RTO cannot exceed 20% LEL, and safety is guaranteed; if the pressure exceeds the preset pressure, an emergency discharge valve at the front end of the RTO is opened, an air inlet valve is closed, a fresh air valve is opened, and the RTO enters a fresh air mode, so that safety is ensured;
(9) The treated waste gas is discharged through a chimney after reaching the standard.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (7)
1. The discontinuous VOC waste gas treatment device is characterized in that a waste gas source (1) is sequentially communicated with an exhaust fan (101), an emergency discharge valve (102), an air inlet valve (103), a explosion venting piece (104) and a water seal protection tank (2), and the output end of the water seal protection tank (2) is communicated with a flame arrester (201), a waste gas blower (202) and a peak-eliminating and valley-filling device;
the peak-load eliminating device comprises an active carbon adsorption device and a nitrogen desorption device;
the activated carbon adsorption device comprises a carbon tank group (3), wherein the carbon tank group (3) comprises a carbon tank A (31), a carbon tank B (32), a carbon tank C (33), a carbon tank D (34) and a carbon tank E (35), the carbon tank group (3) is respectively communicated with a nitrogen gas circulation desorption fan (302) and an explosion-proof electric heating chamber (301), the nitrogen gas circulation desorption fan (302) and the output of the explosion-proof electric heating chamber (301) are communicated with a chilled water heat exchange condensing device (4) through at least one pipeline, and a condensing fan (402) is arranged before the at least one pipeline is communicated with the chilled water heat exchange condensing device (4);
the output end of the chilled water heat exchange condensing device (4) is communicated with the three-combustion-chamber RTO (5) through a waste solvent storage tank (401), and a waste solvent burner (403) is arranged at the position where the waste solvent storage tank (401) is connected with the three-combustion-chamber RTO (5);
the carbon tank C (33) is sequentially communicated with the RTO fan (303) and the flame arrester (304), and the output end of the flame arrester (304) is communicated with the regenerator A (51), the regenerator B (52) and the regenerator C (53) in parallel.
2. A device for treating discontinuous VOC exhaust gas according to claim 1, characterized in that the output ends of regenerator a (51), regenerator B (52), regenerator C (53) are connected in sequence to a high temperature mixing chamber (61), chimney (6).
3. A device for treating discontinuous VOC exhaust gas according to claim 2, characterized in that the three-combustion-chamber RTO (5) is connected with regenerator a (51), regenerator B (52), regenerator C (53), and the output end of the three-combustion-chamber RTO (5) is connected with an emergency temperature release valve (56), a high temperature mixing chamber (61), and a chimney (6).
4. A device for treating discontinuous VOC exhaust gas according to claim 3, characterized in that an emergency exhaust valve, an intake valve and a fresh air valve are arranged in sequence between the carbon tank C (33) and the RTO fan (303).
5. A discontinuous VOC exhaust gas treatment apparatus according to claim 4 wherein a gas burner (404) is provided on the three-chamber RTO (5).
6. A discontinuous VOC off-gas treatment apparatus according to claim 5 wherein the three-chamber RTO (5) is provided with a vent.
7. The discontinuous VOC waste gas treatment device as claimed in claim 6, wherein the air inlet pipelines of the heat storage chambers A (51), B (52) and C (53) are connected with air inlet valves, the air outlet pipelines of the heat storage chambers A (51), B (52) and C (53) are connected with air outlet valves, the heat storage chambers A (51), B (52) and C (53) are communicated with the clean air blower (54), and the clean air blower (54) is provided with clean air blowing valves (55).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322142594.7U CN220715321U (en) | 2023-08-09 | 2023-08-09 | Discontinuous VOC waste gas treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322142594.7U CN220715321U (en) | 2023-08-09 | 2023-08-09 | Discontinuous VOC waste gas treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220715321U true CN220715321U (en) | 2024-04-05 |
Family
ID=90485806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322142594.7U Active CN220715321U (en) | 2023-08-09 | 2023-08-09 | Discontinuous VOC waste gas treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220715321U (en) |
-
2023
- 2023-08-09 CN CN202322142594.7U patent/CN220715321U/en active Active
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