CN214131027U - Chemical waste gas filtering device - Google Patents
Chemical waste gas filtering device Download PDFInfo
- Publication number
- CN214131027U CN214131027U CN202022285996.9U CN202022285996U CN214131027U CN 214131027 U CN214131027 U CN 214131027U CN 202022285996 U CN202022285996 U CN 202022285996U CN 214131027 U CN214131027 U CN 214131027U
- Authority
- CN
- China
- Prior art keywords
- protecting sheathing
- filter
- catalytic combustion
- filters
- waste gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 72
- 239000007789 gas Substances 0.000 title claims abstract description 40
- 239000002894 chemical waste Substances 0.000 title claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000007084 catalytic combustion reaction Methods 0.000 claims abstract description 35
- 238000005507 spraying Methods 0.000 claims abstract description 22
- 239000007921 spray Substances 0.000 claims abstract description 17
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims abstract description 12
- 238000002485 combustion reaction Methods 0.000 claims abstract description 10
- 239000003054 catalyst Substances 0.000 claims abstract description 9
- 239000000919 ceramic Substances 0.000 claims abstract description 9
- 230000001681 protective effect Effects 0.000 claims description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 230000008901 benefit Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims 1
- 239000002912 waste gas Substances 0.000 abstract description 19
- 239000003595 mist Substances 0.000 abstract 1
- 238000009298 carbon filtering Methods 0.000 description 20
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000002440 industrial waste Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010815 organic waste Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001573 beryllium compounds Chemical class 0.000 description 1
- QGJOPFRUJISHPQ-NJFSPNSNSA-N carbon disulfide-14c Chemical compound S=[14C]=S QGJOPFRUJISHPQ-NJFSPNSNSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000010812 mixed waste Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model discloses a chemical industry exhaust gas filter equipment, filter protecting sheathing, spark arrester and catalytic combustion including base, spraying and filter protecting sheathing, active carbon and filter protecting sheathing, the bottom that sprays and filter protecting sheathing one side is equipped with the air inlet, the bottom fixed mounting of connecting rod has the shower head, the inside bottom movable mounting that sprays and filter protecting sheathing has the filter screen, the inside fixed mounting that active carbon filters protecting sheathing has the active carbon filter, be equipped with the spark arrester that the cooperation was used on the breather pipe, catalytic combustion filters protecting sheathing's inside difference fixed mounting has combustion heater, the ceramic catalyst line body of honeycomb and heat exchanger. The utility model discloses a shower head, active carbon filter, combustion heater, honeycomb ceramic catalyst line body and heat exchanger have realized that the device can the direct filtration mist, have improved the quality of filtering waste gas.
Description
Technical Field
The utility model relates to a waste gas filtering technology field specifically is a chemical industry waste gas filter equipment.
Background
Industrial waste gas, which is a generic term for various pollutant-containing gases discharged into the air during the combustion and production processes of fuels in plant areas of enterprises, includes: carbon dioxide, carbon disulfide, hydrogen sulfide, fluoride, nitrogen oxide, chlorine, hydrogen chloride, carbon monoxide, sulfuric acid (fog), plumbous mercury, beryllium compound, smoke dust and productive dust, which are discharged into the atmosphere and pollute the air, wherein the substances enter the human body through different respiratory tracts, some substances are directly harmful and have accumulation action and can seriously harm the health of people, different substances have different influences, the industrial waste gas treatment refers to the work of pretreating waste gas generated in industrial places such as factories and workshops before the waste gas is discharged to the outside so as to reach the standard of national waste gas discharge, the discharge of the waste gas is intensified along with the rapid development of industry, the waste gas is discharged into the atmosphere without being treated and forms pollution under certain conditions, the chemical waste gas often contains a plurality of pollutant types and has complex physical and chemical properties, toxicity is also different, and traditional exhaust-gas treatment equipment function is single, only can be applicable to a waste gas and handle, and chemical waste gas exists and handles not thorough not enough, consequently remains a large amount of harmful substance, influences the atmospheric quality, seriously pollutes the environment and influences the health, needs a chemical waste gas filter equipment now, but current chemical waste gas filter equipment has many problems or defects:
the existing industrial waste gas filtering device has single performance, so that the gas filtering of the device is incomplete, and the filtering quality is reduced; and certain resources are wasted during the filtration period, and the energy sources cannot be recycled.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a chemical waste gas filter equipment to solve the problem that the chemical waste gas filter equipment inefficiency that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a chemical waste gas filtering device comprises a base, a spraying and filtering protective shell, an active carbon filtering protective shell, a flame arrester and a catalytic combustion filtering protective shell, wherein the top of the base is respectively and fixedly provided with the spraying and filtering protective shell, the active carbon filtering protective shell and the catalytic combustion filtering protective shell, the bottom of one side of the spraying and filtering protective shell is provided with an air inlet, the top of one side of the spraying and filtering protective shell is provided with a connecting rod extending to the inside through a water inlet, the bottom of the connecting rod is fixedly provided with a spray head, the bottom of the inside of the spraying and filtering protective shell is movably provided with a filter screen, the filter screen is provided with filter paper, the spraying and filtering protective shell is fixedly connected with the active carbon filtering protective shell through a three-way connecting pipe at the top, the inside of the active carbon filtering protective shell is fixedly provided with six groups of active carbon filter plates, the utility model discloses a catalytic combustion filter protective housing, including active carbon filter protective housing, catalytic combustion filter protective housing, breather pipe intercommunication, be equipped with the spark arrester that the cooperation was used on the breather pipe, catalytic combustion filter protective housing's inside fixed mounting has combustion heater, honeycomb ceramic catalyst line body and heat exchanger respectively, hot water delivery port and the cold water inlet that extend catalytic combustion filter protective housing are installed respectively to the top and the bottom of heat exchanger, the gas outlet is installed to one side of catalytic combustion filter protective housing.
Preferably, all be equipped with the control valve that the cooperation was used on air inlet and the gas outlet, activated carbon filters protective housing and catalytic combustion and filters protective housing and all passes through metal supporting leg and base fixed mounting.
Preferably, the front fixed mounting that sprays and filters protecting sheathing has the control box, be equipped with the control mechanism that the cooperation was used on the control box, and the control box pass through the wire respectively with spray and filter protecting sheathing, active carbon and filter protecting sheathing, spark arrester and catalytic combustion and filter protecting sheathing electric connection.
Preferably, the front of spraying and filtering the protecting sheathing bottom is equipped with the outlet that the cooperation was used, the both ends of filter screen are through buckle and spraying and filtering protecting sheathing movable mounting.
Preferably, the active carbon filters protecting sheathing and catalytic combustion filters protecting sheathing both ends and all passes through pipe connection fixedly connected with breather pipe, and the positive movable mounting of active carbon filters protecting sheathing has the movable protection door, the benefit air-cooler that communicates with the breather pipe is installed at the top of base.
Preferably, the front surface of the catalytic combustion filtering protective shell is provided with a warning board which is used in a matched mode, and the hot water outlet and the cold water inlet are provided with butt joints which are used in a matched mode.
Compared with the prior art, the utility model discloses an innovation point effect is: this chemical waste gas filter equipment is reasonable, has following advantage:
(1) through the matching use of the spray header, the filter paper, the activated carbon filter plate, the flame arrester, the combustion heater and the honeycomb ceramic catalyst line body, the mixed waste gas can be filtered instead of single gas filtration, so that the mixed gas can be subjected to layered filtration, particles and dust contained in the waste gas can be well filtered and precipitated, and harmful pollutants such as benzene, alcohol, ketone, ester, gasoline and the like can be better decomposed, the condition that the waste gas is discharged when the waste gas is not filtered in place is avoided, and the integral use range of the device is improved;
(2) through the heat exchanger that is equipped with in the device, in filtering process, produced steam can heat the cold water that gets into from the cold water inlet, derives from the hot water delivery port again after the heating, carries out reutilization with heat energy, has reached the purpose of cyclic utilization energy, has improved the holistic feature of environmental protection of device, has enlarged the practicality of device.
Drawings
Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;
fig. 2 is a schematic front view of the structure of the present invention;
fig. 3 is a schematic view of the partial cross-sectional structure of the present invention.
In the figure: 1. a base; 101. an air inlet; 102. a control valve; 103. a three-way connecting pipe; 104. a pipe interface; 105. a breather pipe; 106. supplementing a cold air blower; 107. an air outlet; 2. spraying and filtering the protective shell; 201. a water inlet; 202. a connecting rod; 203. a shower head; 204. filtering paper; 205. Filtering with a screen; 206. a water outlet; 207. a control box; 3. an active carbon filtration protective shell; 301. An activated carbon filter plate; 302. a metal support leg; 4. a flame arrestor; 5. a catalytic combustion filtration protective housing; 501. a combustion heater; 502. a honeycomb ceramic catalyst wire body; 503. a heat exchanger; 504. a hot water outlet; 505. a cold water inlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides an embodiment: a chemical waste gas filtering device comprises a base 1, a spraying and filtering protective shell 2, an active carbon filtering protective shell 3, a flame arrester 4 and a catalytic combustion filtering protective shell 5, wherein the spraying and filtering protective shell 2, the active carbon filtering protective shell 3 and the catalytic combustion filtering protective shell 5 are fixedly installed at the top of the base 1 respectively, and the active carbon filtering protective shell 3 and the catalytic combustion filtering protective shell 5 are fixedly installed with the base 1 through metal supporting legs 302;
the bottom of one side of the spraying and filtering protective shell 2 is provided with an air inlet 101, the front of the spraying and filtering protective shell 2 is fixedly provided with a control box 207, the control box 207 is provided with a control mechanism which is matched with the control box, the control box 207 is respectively and electrically connected with the spraying and filtering protective shell 2, the activated carbon filtering protective shell 3, the flame arrester 4 and the catalytic combustion filtering protective shell 5 through leads, two ends of the activated carbon filtering protective shell 3 and the catalytic combustion filtering protective shell 5 are both fixedly connected with a vent pipe 105 through a pipeline interface 104, and the front of the activated carbon filtering protective shell 3 is movably provided with a movable protective door;
the air inlet 101 and the air outlet 107 are both provided with control valves 102 which are matched for use, the top of one side of the spraying and filtering protective shell 2 is provided with a connecting rod 202 which extends to the inside through a water inlet 201, the bottom of the connecting rod 202 is fixedly provided with a spraying head 203, the bottom end inside the spraying and filtering protective shell 2 is movably provided with a filter screen 205, filter paper 204 is placed on the filter screen 205, the spraying and filtering protective shell 2 is fixedly connected with the active carbon filtering protective shell 3 through a three-way connecting pipe 103 at the top, six groups of active carbon filter plates 301 are fixedly arranged inside the active carbon filtering protective shell 3, the active carbon filtering protective shell 3 is communicated with the catalytic combustion filtering protective shell 5 through an air pipe 105, the air pipe 105 is provided with a flame arrester 4 which is matched for use, and the top of the base 1 is provided with an air supplementing and cooling fan 106 which is communicated with the air pipe 105;
a combustion heater 501, a honeycomb ceramic catalyst line body 502 and a heat exchanger 503 are respectively and fixedly installed inside the catalytic combustion filtering protective shell 5, in the filtering process, the generated hot air can heat cold water entering from a cold water inlet 505 through the heat exchanger 503, the cold water is guided out from a hot water outlet 504 after being heated, the heat energy is secondarily utilized, the purpose of recycling energy is achieved, a hot water outlet 504 and a cold water inlet 505 which extend out of the catalytic combustion filtering protective shell 5 are respectively installed at the top and the bottom of the heat exchanger 503, butt joints used in a matched mode are respectively arranged on the hot water outlet 504 and the cold water inlet 505, an air outlet 107 is installed on one side of the catalytic combustion filtering protective shell 5, a warning board used in a matched mode is arranged on the front face of the catalytic combustion filtering protective shell 5, and the heat exchanger 503 is a device for transferring partial heat of hot fluid to, the heat exchange is formed due to the temperature difference between the hot water in the pipeline and the cold hot water in the container, namely the heat balance of the primary and secondary physics, and the heat of the high-temperature object is always transferred to the low-temperature object, so that the heat of the water in the pipeline is exchanged to the cold water in the container.
The working principle is as follows: when the device is used, firstly, the spray header 203, the flame arrester 4, the combustion heater 501, the honeycomb ceramic catalyst line body 502 and the heat exchanger 503 are respectively started to work simultaneously through the control box 207, the control valve 102 is opened to enable mixed gas to be filtered to enter the spray filtering protective shell 2 from the air inlet 101 for pretreatment, acid (alkaline) gas in waste gas is removed according to acid-base neutralization reaction, the pH value of a solution is automatically controlled according to the pH value, chemicals are automatically added, part of water-soluble substances, particles and the like in the waste gas are pretreated and purified, gas-phase substances are converted into liquid-phase substances, the gas is effectively and fully contacted with circulating water through the spray header 203, the particles and the like in the waste gas are effectively removed, and waste water after working can be discharged through the water outlet 206;
secondly, the gas after spraying and filtering enters the activated carbon filtering protective shell 3 and is subjected to secondary filtering on the waste gas through the activated carbon filtering plate 301, the waste gas of benzene, alcohol, ketone, ester and gasoline organic solvents in the waste gas is adsorbed through the activated carbon filtering plate 301, and in order to facilitate the use effect of the activated carbon filtering plate 301, the activated carbon filtering plate 301 can be replaced at regular time through a movable door on the front side of the activated carbon filtering protective shell 3 so as to ensure the use effect of the activated carbon filtering plate 301;
finally, the organic waste gas after the second filtration enters the catalytic combustion filtration protective housing 5 after being filtered by the flame arrester 4 for final filtration, when the organic waste gas is heated to a temperature suitable for catalysis by the combustion heater 501, the organic components in the waste gas are oxidized and decomposed into carbon dioxide and water under the action of the honeycomb ceramic catalyst wire body 502, a large amount of heat energy is released at the same time, the purified gas converts the heat energy into cold air flow through the heat exchanger 503, and the cooled gas is discharged from the gas outlet 107.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a chemical industry exhaust gas filter equipment, includes base (1), sprays filtration protecting sheathing (2), activated carbon filters protecting sheathing (3), spark arrester (4) and catalytic combustion filtration protecting sheathing (5), its characterized in that: the top of base (1) is fixed mounting respectively has the spray filtration protecting sheathing (2), activated carbon filters protecting sheathing (3) and catalytic combustion filters protecting sheathing (5), the spray bottom of filtering protecting sheathing (2) one side is equipped with air inlet (101), the spray top of filtering protecting sheathing (2) one side is installed through water inlet (201) and is extended to inside connecting rod (202), the bottom fixed mounting of connecting rod (202) has shower head (203), the inside bottom movable mounting of spray filtration protecting sheathing (2) has filter screen (205), filter paper (204) have been put on filter screen (205), the spray filtration protecting sheathing (2) are taken over (103) and activated carbon filtration protecting sheathing (3) fixed connection through the tee bend at top, the inside fixed mounting of activated carbon filtration protecting sheathing (3) has six groups of activated carbon filter (301), activated carbon filters between protecting sheathing (3) and the catalytic combustion filters protecting sheathing (5) through breather pipe (105) intercommunication, be equipped with spark arrester (4) that the cooperation was used on breather pipe (105), the inside difference fixed mounting of catalytic combustion filters protecting sheathing (5) has combustion heater (501), honeycomb ceramic catalyst line body (502) and heat exchanger (503), hot water delivery port (504) and cold water inlet (505) that extend catalytic combustion filters protecting sheathing (5) are installed respectively to the top and the bottom of heat exchanger (503), gas outlet (107) are installed to one side of catalytic combustion filters protecting sheathing (5).
2. The chemical waste gas filtering device according to claim 1, wherein: all be equipped with control valve (102) that the cooperation was used on air inlet (101) and gas outlet (107), activated carbon filters protecting sheathing (3) and catalytic combustion filters protecting sheathing (5) and all passes through metal supporting leg (302) and base (1) fixed mounting.
3. The chemical waste gas filtering device according to claim 1, wherein: the front fixed mounting that sprays and filter protecting sheathing (2) has control box (207), be equipped with the control mechanism that the cooperation was used on control box (207), and control box (207) through the wire respectively with spray and filter protecting sheathing (2), active carbon filter protecting sheathing (3), spark arrester (4) and catalytic combustion filter protecting sheathing (5) electric connection.
4. The chemical waste gas filtering device according to claim 1, wherein: the front of spraying and filtering protective housing (2) bottom is equipped with outlet (206) that the cooperation was used, the both ends of filter screen (205) are through buckle and spraying and filtering protective housing (2) movable mounting.
5. The chemical waste gas filtering device according to claim 1, wherein: activated carbon filters protecting sheathing (3) and catalytic combustion filters protecting sheathing (5) both ends and all passes through pipe connection (104) fixedly connected with breather pipe (105), and the positive movable mounting of activated carbon filtration protecting sheathing (3) has the movable protective door, benefit air-cooler (106) with breather pipe (105) intercommunication are installed at the top of base (1).
6. The chemical waste gas filtering device according to claim 1, wherein: the front of catalytic combustion filters protective housing (5) is equipped with the warning sign that the cooperation was used, all be equipped with the butt joint mouth that the cooperation was used on hot water delivery port (504) and cold water inlet (505).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022285996.9U CN214131027U (en) | 2020-10-14 | 2020-10-14 | Chemical waste gas filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022285996.9U CN214131027U (en) | 2020-10-14 | 2020-10-14 | Chemical waste gas filtering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214131027U true CN214131027U (en) | 2021-09-07 |
Family
ID=77558456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022285996.9U Expired - Fee Related CN214131027U (en) | 2020-10-14 | 2020-10-14 | Chemical waste gas filtering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214131027U (en) |
-
2020
- 2020-10-14 CN CN202022285996.9U patent/CN214131027U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210907 |
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| CF01 | Termination of patent right due to non-payment of annual fee |