CN113082972B - Pulse plasma composite multistage water film deodorization device and deodorization method for breeding house - Google Patents
Pulse plasma composite multistage water film deodorization device and deodorization method for breeding house Download PDFInfo
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- CN113082972B CN113082972B CN202110200441.6A CN202110200441A CN113082972B CN 113082972 B CN113082972 B CN 113082972B CN 202110200441 A CN202110200441 A CN 202110200441A CN 113082972 B CN113082972 B CN 113082972B
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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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
- B01D53/14—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 absorption
- B01D53/1406—Multiple stage absorption
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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
- B01D53/32—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 electrical effects other than those provided for in group B01D61/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/304—Hydrogen sulfide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/406—Ammonia
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/818—Employing electrical discharges or the generation of a plasma
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Abstract
The invention belongs to the technical field of gas purification, and relates to gas deodorization equipment for aquaculture, in particular to a pulse plasma composite multistage water film deodorization device and a deodorization method for a breeding house. Including a sealed box, the inside cavity of box forms the cavity, and system respectively has air inlet and gas outlet in its lateral wall, its characterized in that: the cavity of box forms gas passage to the gas outlet direction by the air inlet in, a plurality of filter plate subassemblies are installed to the interval in this gas passage, every the filter plate subassembly all install along gas passage's cross-section direction, can cover gas passage's cross-section completely, a plurality of filter plate subassemblies in at least one as water film attached plate, this water film attached plate is used for forming the curtain formula water film, installs at least one plasma generation subassembly between adjacent filter plate subassembly.
Description
Technical Field
The invention belongs to the technical field of gas purification, and relates to gas deodorization equipment for aquaculture, in particular to a pulse plasma composite multistage water film deodorization device and a deodorization method for a breeding house.
Background
With the increase of consumption level and the change from high carbohydrate to high protein diet concept, the demand of the residents in China for meat foods is increasingly increased, and the large-scale livestock breeding is also flourished and developed. With the rapid development of the livestock industry and the large-scale breeding, the pollution phenomenon of the surrounding environment caused by a large amount of stink generated by a centralized livestock house is more serious. In order to meet the requirements of environmental protection and livestock breeding, corresponding deodorization equipment for breeding houses is produced.
The malodorous components generated in the livestock breeding process are complex, and mostly contain ammonia, sulfides, amines and some fatty acid chemicals, and the current treatment modes of the odors are roughly divided into the following modes. One is ventilation, that is, air is discharged by an air inducing device, and corresponding acid and alkaline liquid are sprayed in a breeding house in a matching way for treatment, but the method is easy to cause secondary pollution. Another type is the use of deodorization, commonly used methods such as washing, thermal oxidation, etc. The washing method is easy to form secondary pollution in the treatment process. The thermal oxidation method can use oxidant for deodorization, but needs to consume a large amount of oxidant, and the treatment cost is too high.
Therefore, a new deodorizing device should be designed to solve the disadvantages occurring in the prior art.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a closed type cultivation house pulse plasma composite multistage water film deodorization device which is reasonable in structure, adopts plasma to accord with water film combination and is based on the oxidation and adsorption principles.
The technical scheme adopted by the invention is as follows:
breed and give up with compound multistage water film deodorizing device of pulse plasma, including a sealed box, the inside cavity of box forms the cavity, and it has air inlet and gas outlet, its characterized in that to make respectively in its lateral wall: form gas passage by the air inlet to the gas outlet direction in the cavity of box, a plurality of filter plate subassemblies are installed at the interval in this gas passage, every the filter plate subassembly all install along gas passage's cross-section direction, can cover gas passage's cross-section completely, the filter plate subassembly of nearly air inlet is as the water film attachment plate, this water film attachment plate is used for forming the curtain formula water film, and the filter plate subassembly of nearly gas outlet is as defogging board, and this defogging board is used for condensation steam and follows the lower extreme water conservancy diversion, spray set is installed to the side position of water film attachment plate to install at least one plasma generation subassembly before its side of admitting air.
Furthermore, the spraying device comprises a spray head and a pipeline, the water inlet end of the pipeline is communicated with the liquid source, and the spray head sprays towards the filter plate assembly from the water outlet end of the pipeline.
Furthermore, each filter plate assembly comprises a plurality of plate-type structures which are arranged side by side, each plate-type structure is fixed in parallel, and gas can pass through the plate-type structures in one filter plate assembly layer by layer.
Further, the plasma generating assembly comprises a cathode and an anode, wherein the cathode is positioned between the anodes and is arranged at intervals in parallel with the anodes, the cathode is made of an insulating material and is used for loading high-voltage direct current, and the anode is used for grounding.
Furthermore, the cathode adopts a strip-shaped structure, and the length of the cathode in the length direction is not less than the size of the filter plate assemblies in the same direction.
Furthermore, the anode is of a movable structure, and a dust removing device is arranged beside the anode.
Furthermore, the anode is made of conductive metal wires, the conductive metal wires form a closed ring structure, a guide wheel is respectively installed at the corner position of the closed ring structure, and any guide wheel is linked with an external driving device.
Furthermore, a dust removal device is arranged beside the metal wire and is in close contact with the outside of the metal wire.
The deodorization method applying the pulse plasma composite multistage water film deodorization device for the breeding house comprises the following steps of 1: preparing and selecting a solution sprayed by a spraying device according to the components of the gas, wherein if the gas is weakly acidic, alkaline liquid is adopted, if the gas is weakly alkaline, weakly acidic liquid is adopted, and if the gas is neutral, neutral or adsorptive liquid is adopted;
and 2, step: starting a spraying device to form a dense curtain type water film on the surface of the water film attachment plate;
and 3, step 3: applying a high-voltage direct-current load to a cathode of the plasma generation assembly;
and 4, step 4: the malodorous gas is led into the box body through the air inlet and is oxidized through a generating gap where the plasma generating component is positioned;
and 5: sequentially passing through one-stage or multi-stage water film adhering plates;
step 6: and finally, carrying out gas-liquid separation through the demisting plate, condensing the liquid and discharging the condensed liquid outwards, and leading out the gas from the gas outlet.
The invention has the advantages and positive effects that:
in the invention, a sealed box body is used as a cavity in the installation base coal gas to form a gas channel along the gas flow direction, and a gas inlet and a gas outlet are respectively manufactured at two sides of the gas channel and used as gas outlet for gas inlet. A plurality of filter plate assemblies arranged in the filter plate assembly form a multi-stage structure, pressure loss is small in the gas flowing process, and therefore step-by-step processing is achieved. Any one or more of the filter plate assemblies can be selected as a water film attachment plate, and the water film attachment plate can respectively adopt acidic, alkaline, neutral or adsorbent and other liquids to form a curtain type water film according to the gas to be treated, so that the water film attachment plate is fully contacted with the gas, the neutralization or adsorption effect is greatly improved, malodorous substances in the gas are transferred to the liquid, and further the recovery and treatment are convenient. The plasma generating assembly does not consume oxidant, has strong oxidizing property, can oxidize gases such as ammonia gas and hydrogen sulfide in the gases, and can make the treatment effect of a subsequent curtain type water film better if being matched with alkaline liquid.
In the present invention, a plurality of filter plate assemblies may be differently used in consideration of dehumidification and defogging effects. The side close to the air inlet is matched with a spraying device to form a water film attachment plate, and the side close to the air outlet is used as a filter plate or a spoiler.
In the invention, the filter plate component is made of a plate type structure with filter holes, and the use mode of installing a plurality of filter plates side by side has a plurality of advantages. For example, the specific surface area of the water film can be increased to facilitate the absorption of the oxidized gas, the flow guiding direction of the gas can be changed to ensure that gas molecules are more fully contacted with the curtain-type water film under the action of inertia, and meanwhile, the strength of the adjacent plate-type structure can also be improved, and the deformation and the fracture under the action of airflow can be avoided. In the invention, the anode and the cathode are matched to be used as a plasma generation assembly, and a high-frequency pulse electric field is formed in the discharge gap, so that the power consumption is low. The cathode and the anode can be arranged in a plurality of positions, so that discharge points are promoted, and the ozone preparation efficiency is higher.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a portion of a plasma generation assembly;
FIG. 3 is a schematic view of a filter plate assembly cooperating with a spray device to form a water film attachment plate;
FIG. 4 is a schematic illustration of the construction of the filter plate assembly;
FIG. 5 is a schematic view of a panel construction;
fig. 6 is a schematic view of a multilayer panel construction that causes gas flow redirection.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be illustrative, not limiting and are not intended to limit the scope of the invention.
The invention discloses a pulse plasma composite multistage water film deodorization device for a breeding house, which comprises a sealed box body 4, wherein a hollow cavity is formed in the box body, and a gas inlet and a gas outlet 6 are respectively formed in the side wall of the hollow cavity.
In this embodiment, three filter plate assemblies are installed in order in the cavity of box, and then form tertiary structure. The side near the air inlet is taken as a first stage, the middle part is taken as a second stage, and the side near the air outlet is taken as a third stage. For dehumidification and defogging, only the primary and secondary are used as water film adhering plates. And a spraying device and a plasma generation assembly are arranged between the first stage and the gas inlet and between the first stage and the second stage.
In this embodiment, the box is mounted on the upper end of a support 7, and a plurality of water outlets 9 are integrally mounted on the lower end of the box.
In this embodiment, in order to facilitate the recovery of the liquid, a drain pipe is installed at the drain port of the casing, and the drain pipe is also communicated with the liquid source to form a circulation. In order to filter the water, a filtering device is arranged on the water outlet side of the liquid source, namely the front end of the water inlet of the pipeline.
In this embodiment, a spraying device is installed beside the filter plate assembly used as the water film attachment plate, the spraying device includes a nozzle and a pipeline 8, a water inlet end of the pipeline is communicated with the liquid source, and the nozzle sprays water to the filter plate assembly for a water outlet end of the pipeline. The spray head is preferably a conical spray head 14.
In this embodiment, the filter plate assembly is manufactured by using a plate structure with filter holes.
In this embodiment, each filter plate assembly comprises a plurality of plate structures arranged side by side, each plate structure is parallel to each other and fixed, and gas can pass through the plurality of plate structures in one filter plate assembly layer by layer.
In this embodiment, the filter plate assembly includes an inner frame 15, an outer frame 17 and a plate structure 16, and the plate structure is pressed and fixed between the inner frame and the outer frame. The middle parts of the inner frame and the outer frame are all hollowed out to form hollowed-out areas 18.
In this embodiment, the plate-type structure is made of a light-weight thin plate, and the structure of the plate-type structure is as shown in fig. 5, the light-weight thin plate is made of regular folds, a plurality of hole-shaped structures 19 are uniformly formed at intervals in the light-weight thin plate, and the angles of the gas flow channels formed outside each hole-shaped structure of the same plate-type structure are the same. The design aim is to improve the specific surface area of the plate-type structure, so that more liquid can be attached to the plate-type structure, and the attachment time of the liquid is prolonged as much as possible.
In this embodiment, the hole-like structures formed by the plurality of plate structures within the same filter plate assembly are offset, as shown in fig. 6. Preferably 5-10 layers, so that the plate-type structures are sequentially arranged in different flow guide directions to provide support for each other, higher water film surface area under the same water injection amount is realized, meanwhile, the airflow is redirected for many times when passing through each layer of plate-type structure, and gas molecules are fully contacted and absorbed with the water film due to inertia. The preferred plate structure can adopt a loincloth Green dust remover or a plate assembly in a loincloth cell Lin Chuchen remover.
In this embodiment, the plasma generating assembly comprises a cathode 11 and an anode 10, the cathode is positioned between the anodes and spaced apart from the anode in parallel, the cathode is made of an insulating material for carrying a high voltage direct current, and the anode is connected to ground.
In this embodiment, a plurality of high-voltage insulators 3 are uniformly installed outside the box body at intervals, the high-voltage insulators are arranged in rows, a main beam is installed at the lower end of each high-voltage insulator, two tubular members are installed at the lower end of the main beam at intervals in parallel, and the main beam and the tubular members are used as cathodes.
In this embodiment, the anode is made of a conductive metal wire, and a stainless steel wire is used in this embodiment. The stainless steel wire forms a rectangular closed loop structure, a guide wheel 13 is respectively arranged at the four corners of the stainless steel wire, and any guide wheel is linked with an external driving device.
The driving device comprises a main shaft 2, the main shaft is driven by a motor 12, a plurality of gears 1 are sleeved at even intervals along the axial outer part of the main shaft, each gear is linked with a guide wheel through a chain, the extending direction of the main shaft is vertical to a closed loop structure formed by stainless steel wires, and the guide wheel driven by the main shaft is used as a driving wheel.
In this embodiment, the dust removing device may be a brush installed at the side of the anode, but the brush head of the brush needs to be closely contacted with the outer surface of the stainless steel wire, so as to strip off dust and particles. In this embodiment, the cathode is a strip structure, and the length in the longitudinal direction of the cathode should not be less than the size of the filter plate assemblies in the same direction.
The working process of the invention is as follows:
when the invention is used, the method comprises the following steps:
step 1: preparing and selecting a solution sprayed by a spraying device according to the components of the gas, wherein if the gas is weakly acidic, alkaline liquid is adopted, if the gas is weakly alkaline, weakly acidic liquid is adopted, and if the gas is neutral, neutral or adsorptive liquid is adopted;
step 2: starting a spraying device to form a dense curtain type water film on the surface of the water film attaching plate;
and step 3: applying a high voltage dc load to the cathode of the plasma generating assembly;
and 4, step 4: the malodorous gas is led into the box body through the air inlet and is oxidized through a generating gap where the plasma generating component is positioned;
and 5: sequentially passing through one-stage or multi-stage water film adhering plates;
step 6: finally, gas-liquid separation is carried out through a demisting plate, the liquid is condensed and discharged outside, and the gas is led out from a gas outlet;
and 7: liquid flowing down from the lower end of the water film attachment plate and liquid condensed from the lower end of the demisting plate are collected and then are guided out from the water outlet to flow back for circulation.
In the invention, a sealed box body is used as a cavity in the installation base coal gas to form a gas channel along the gas flow direction, and a gas inlet and a gas outlet are respectively manufactured at two sides of the gas channel and used as gas outlet for gas inlet. A plurality of filter plate assemblies arranged in the filter plate assembly form a multi-stage structure, pressure loss is small in the gas flowing process, and therefore step-by-step processing is achieved. Any one or more of a plurality of filter plate assemblies can be selected as water film attachment plates, and the water film attachment plates can respectively adopt acidic, alkaline, neutral or adsorbent and other liquids to form curtain water films according to the gas to be treated, so that the water film attachment plates are fully contacted with the gas, the neutralization or adsorption effect is greatly improved, the malodorous substances in the gas are transferred to the liquid, and further the recovery and treatment are convenient. The plasma generating assembly does not consume oxidant, has strong oxidizing property, can oxidize gases such as ammonia gas and hydrogen sulfide in the gases, and can make the treatment effect of a subsequent curtain type water film better if being matched with alkaline liquid.
In the present invention, a plurality of filter plate assemblies may be differentiated for dehumidification and defogging effects. The side close to the air inlet is matched with a spraying device to form a water film attachment plate, and the side close to the air outlet is used as a filter plate or a spoiler.
In the invention, the filter plate component is made of a plate type structure with filter holes, and the use mode of installing a plurality of filter plates side by side has a plurality of advantages. For example, the specific surface area of the water film can be increased to facilitate the absorption of oxidized gas, the flow guiding direction of the gas can be changed to ensure that gas molecules are more fully contacted with the curtain-type water film under the action of inertia, and meanwhile, the strength of the adjacent plate-type structure can be improved to avoid deformation and fracture under the action of airflow. In the invention, the anode and the cathode are matched to be used as a plasma generation assembly, and a high-frequency pulse electric field is formed in the discharge gap, so that the power consumption is low. The cathode and the anode can be arranged in a plurality of positions, so that discharge points are promoted, and the ozone preparation efficiency is higher.
Claims (2)
1. The utility model provides a breed house and use compound multistage water film deodorizing device of pulse plasma which characterized in that: including a sealed box, the inside cavity of box forms the cavity, and system respectively has air inlet and gas outlet in its lateral wall, its characterized in that: a gas channel is formed in the cavity of the box body from the gas inlet to the gas outlet, a plurality of filter plate assemblies are arranged in the gas channel at intervals, each filter plate assembly is arranged along the section direction of the gas channel and can completely cover the section of the gas channel, the filter plate assembly close to the gas inlet is used as a water film attachment plate which is used for forming a curtain type water film, the filter plate assembly close to the gas outlet is used as a demisting plate which is used for condensing water vapor and guiding the flow along the lower end, a spraying device is arranged at the side position of the water film attachment plate, and at least one plasma generation assembly is arranged in front of the gas inlet side of the water film attachment plate;
three filter plate assemblies are sequentially arranged in a cavity of the box body to form a three-stage structure, wherein the side close to the air inlet is taken as a first stage, the middle part is taken as a second stage, and the side close to the air outlet is taken as a third stage; for dehumidification and defogging, only the primary and the secondary are used as water film adhering plates; a spraying device and a plasma generating assembly are arranged between the first stage and the gas inlet and between the first stage and the second stage;
the porous structures formed by a plurality of plate-type structures in the same filter plate assembly are arranged in a staggered manner and are 5-10 layers, so that the plate-type structures are sequentially arranged according to different flow guide directions, airflow is repeatedly redirected when passing through each layer of plate-type structure, and the plate-type structures adopt plate-type assemblies in the loincloth greens dust remover;
the plasma generating assembly comprises a cathode and an anode, wherein the cathode is positioned between the anodes and is arranged in parallel at intervals, the cathode is made of an insulating material and is used for loading high-voltage direct current, and the anode is used for grounding; the anode is of a movable structure, and an ash removal device is arranged beside the anode; the cathode adopts a strip structure, and the length in the length direction of the cathode is not less than the size of the filter plate components in the same direction; the anode is made of conductive metal wires, the conductive metal wires form a closed ring structure, a guide wheel is respectively arranged at the corner position of the closed ring structure, and any guide wheel is linked with an external driving device;
a dust removal device is arranged beside the metal wire and is in close contact with the outside of the metal wire; the dust removing device adopts a brush which is arranged beside the anode, but the brush head part of the brush needs to be tightly contacted with the outer surface of the stainless steel wire, so that dust and particles are peeled off;
the high-voltage insulator type power supply comprises a box body, wherein a plurality of high-voltage insulators are uniformly arranged outside the box body at intervals, the high-voltage insulators are arranged in rows, a main beam is arranged at the lower end of each high-voltage insulator, two tubular pieces are arranged at the lower end of each main beam in parallel at intervals, and the main beams and the tubular pieces are used as cathodes;
the driving device comprises a main shaft, the main shaft is driven by a motor, a plurality of gears are sleeved at equal intervals along the axial outer part of the main shaft, each gear is linked with a guide wheel through a chain, the extending direction of the main shaft is vertical to a closed loop structure formed by stainless steel wires, and the driven guide wheel is used as a driving wheel;
the spraying device comprises a spray head and a pipeline, wherein the water inlet end of the pipeline is communicated with the liquid source, and the spray head sprays towards the filter plate component from the water outlet end of the pipeline.
2. The deodorization method of the pulsed plasma composite multistage water film deodorization device for a breeding house according to claim 1, characterized in that: the method comprises the following steps:
step 1: preparing and selecting a solution sprayed by a spraying device according to the components of the gas, wherein if the gas is weakly acidic, alkaline liquid is adopted, if the gas is weakly alkaline, weakly acidic liquid is adopted, and if the gas is neutral, neutral or adsorptive liquid is adopted;
and 2, step: starting a spraying device to form a dense curtain type water film on the surface of the water film attaching plate;
and 3, step 3: applying a high voltage dc load to the cathode of the plasma generating assembly;
and 4, step 4: the malodorous gas is led into the box body through the air inlet and is oxidized through a generating gap where the plasma generating component is positioned;
and 5: sequentially passing through one-stage or multi-stage water film adhering plates;
step 6: and finally, carrying out gas-liquid separation through the demisting plate, condensing the liquid and discharging the condensed liquid outwards, and leading out the gas from the gas outlet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110200441.6A CN113082972B (en) | 2021-02-23 | 2021-02-23 | Pulse plasma composite multistage water film deodorization device and deodorization method for breeding house |
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| CN202110200441.6A CN113082972B (en) | 2021-02-23 | 2021-02-23 | Pulse plasma composite multistage water film deodorization device and deodorization method for breeding house |
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| CN113251554A (en) * | 2021-07-09 | 2021-08-13 | 雷神等离子科技(杭州)有限公司 | Sterilization and disinfection control method and device |
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| CN2597063Y (en) * | 2003-01-27 | 2004-01-07 | 丁荣吾 | Air pollution purifying equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0741140B2 (en) * | 1990-12-19 | 1995-05-10 | 東洋製罐株式会社 | Method and device for removing solvent from exhaust of paint baking drying furnace |
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- 2021-02-23 CN CN202110200441.6A patent/CN113082972B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB269790A (en) * | 1926-10-04 | 1927-04-28 | Visco Engineering Company Ltd | Improvements in apparatus for treating air or gas with liquid |
| CN2597063Y (en) * | 2003-01-27 | 2004-01-07 | 丁荣吾 | Air pollution purifying equipment |
| KR101341479B1 (en) * | 2013-05-03 | 2013-12-13 | 한국기계연구원 | Apparatus for treating harmful gas using metal mesh plate |
| CN105381662A (en) * | 2015-11-27 | 2016-03-09 | 刘文东 | Novel self-cleaning dust-removing water film filtering plate |
| CN208340955U (en) * | 2018-08-28 | 2019-01-08 | 格瑞福德国际节能技术（北京）有限公司 | A kind of mobile collection electrode of the rope curtain of lateral arrangement |
| CN110756031A (en) * | 2019-11-26 | 2020-02-07 | 重庆明道环保科技有限公司 | Odor purification integrated device |
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