CN114191950A - Quick clearing device of plasma formaldehyde discharges - Google Patents
Quick clearing device of plasma formaldehyde discharges Download PDFInfo
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- CN114191950A CN114191950A CN202210015513.4A CN202210015513A CN114191950A CN 114191950 A CN114191950 A CN 114191950A CN 202210015513 A CN202210015513 A CN 202210015513A CN 114191950 A CN114191950 A CN 114191950A
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- formaldehyde
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 168
- 239000012530 fluid Substances 0.000 claims description 24
- 238000005192 partition Methods 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 description 18
- 239000003570 air Substances 0.000 description 14
- 239000007789 gas Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 239000002912 waste gas Substances 0.000 description 7
- 230000015556 catabolic process Effects 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000006065 biodegradation reaction Methods 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 238000003905 indoor air pollution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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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
- B01D53/323—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 by electrostatic effects or by high-voltage electric fields
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a rapid formaldehyde removing device for discharge plasma, which is characterized by comprising a ventilating device, a plurality of plasma reactor chambers and a high-voltage power supply, wherein the plasma reactor chambers are arranged in the ventilating device, an air inlet of each plasma reactor chamber is communicated with an air inlet of the ventilating device, and an air outlet of each plasma reactor chamber is communicated with an air outlet of the ventilating device. The invention can not only ensure the formaldehyde removal efficiency, but also realize the treatment of the large-flow formaldehyde-containing gas, and has the advantages of compact structure, low cost, high efficiency and wide application field.
Description
Technical Field
The invention belongs to the field of air purification, and particularly relates to a quick formaldehyde removing device for discharge plasma.
Background
Formaldehyde, as a typical Volatile Organic Compound (VOCs), is a main source of indoor air pollution, has high toxicity, can generate various effects on human health, can stimulate eyes, respiratory systems and skin mucous membranes after being inhaled for a short time, and even can cause cancers after being inhaled for a long time.
The current common modes for treating formaldehyde mainly comprise a physical adsorption method, a biodegradation method, a catalytic oxidation method and the like. The physical adsorption method mainly uses substances with porous structures and high specific surface areas to adsorb formaldehyde, substances with formaldehyde adsorption effects in the market comprise activated carbon, diatom ooze, activated alumina, molecular sieves and the like, and the physical adsorption method has the defects that the formaldehyde removal capacity is limited, a carrier is easily saturated, and secondary pollution is generated due to desorption after saturation. The biodegradation method utilizes plants or microorganisms to purify the air environment, has the characteristics of nature, environmental protection, simple operation and the like, and is mainly suitable for treating formaldehyde in a low concentration range. The catalytic oxidation method is to remove harmful gases by oxidation under the action of a catalyst, and although the efficiency is high, the catalyst is easy to deactivate.
Chinese patent application 2016105309612 discloses a "low-temperature plasma formaldehyde sterilizer and formaldehyde removal method", in which a closed plasma cavity needs to be evacuated and heated, the cavity is sterilized at a constant temperature and humidity, then mixed chemical steam is discharged and enters an electrolytic tank, and after air drying, plasma is opened for formaldehyde removal. The system is complex and has a limited formaldehyde degradation rate.
The term "treating formaldehyde-containing waste gas by using the corona-back strengthening low-temperature plasma technology" published by Shenxinjun et al in Shenyang university journal of Industrial university [ J ].2020,42(5) describes that formaldehyde is treated by electric discharge in a needle-plate electrode reactor, which can remove formaldehyde, but has limited formaldehyde removal efficiency due to short discharge channel and limited effect in treating large flow formaldehyde gas.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a rapid formaldehyde removing device for discharge plasma, wherein a plasma discharge device with a continuous discharge channel is designed in a ventilation device, and the length of the discharge channel is increased, so that the formaldehyde removing efficiency can be ensured, and the treatment of a large-flow formaldehyde-containing gas can be realized.
The invention mainly adopts the technical scheme that:
a quick formaldehyde removing device for discharge plasma comprises a ventilation device, a plurality of plasma reactor chambers and a high-voltage power supply, wherein the plasma reactor chambers are arranged in the ventilation device, an air inlet of each plasma reactor chamber is communicated with an air inlet of the ventilation device through a pipeline, and an air outlet of each plasma reactor chamber is communicated with an air outlet of the ventilation device through a pipeline;
be equipped with a plurality of baffles, a plurality of needle electrodes, board electrode and insulating roof in every plasma reactor chamber, it is a plurality of the baffle is installed in the plasma reactor chamber, form continuity fluid channel, insulating roof is installed plasma reactor chamber top, and is located continuity fluid channel's top, the board electrode is installed plasma reactor chamber bottom, and be located continuity fluid channel's bottom, it is a plurality of the needle electrode is pegged graft on the insulating roof, and is located in the continuity fluid channel, the needle electrode passes through electrode connection end with the board electrode and is connected outside high voltage power supply.
Preferably, the plurality of partition plates are two planar spiral insulating partition plates, and the two planar spiral insulating partition plates are nested with each other to isolate the plasma reaction chamber to form a continuous spiral fluid channel.
Preferably, the plasma reactor chamber is of cylindrical configuration.
Preferably, the spiral number of the plane spiral insulating partition plate is 1-2.
Preferably, the plurality of the partition plates are two plane insulating partition plates, and the two plane insulating partition plates are arranged in the plasma reactor chamber in parallel to form a continuous S-shaped fluid channel.
Preferably, the plasma reactor chamber is of rectangular configuration.
Preferably, the insulating top plate is 5mm thick.
Preferably, the high voltage power supply is characterized in that the discharge voltage is 15-20 kV.
Has the advantages that: the invention provides a quick formaldehyde removing device for discharge plasma, which has the following advantages:
(1) the fluid channel is of an S-shaped or spiral structure and is arranged in the ventilation device, so that the path of the formaldehyde gas degraded by the plasma is increased, the effect of degrading the formaldehyde by the corona discharge plasma is fully exerted, and the rapid and full degradation of the large-flow formaldehyde gas is realized;
(2) the invention is suitable for the treatment of the waste gas containing formaldehyde from low concentration to high concentration, micro flow to large flow, and has wide application range and less limitation;
(3) the invention has the advantages of compact structure, low manufacturing cost, simplicity, portability and wide application field.
Drawings
FIG. 1 is a schematic view (top view) of the internal structure of embodiment 1 of the present invention
Fig. 2 is a side view of the structure of a plasma reactor chamber according to embodiment 1 of the present invention;
FIG. 3 is a schematic view (top view) of the internal structure of embodiment 2 of the present invention;
fig. 4 is a side view of the structure of a plasma reactor chamber according to embodiment 2 of the present invention;
FIG. 5 is a graph of formaldehyde removal measurements at different concentrations for example 2;
FIG. 6 is a graph of formaldehyde removal measurements for different flow rates of example 2.
In the figure: the plasma reactor comprises a ventilation device 1, a plasma reactor chamber 2, a planar partition plate 2-1, a needle electrode 2-2, a plate electrode 2-3, an insulating top plate 2-4, a planar spiral insulating partition plate 2-5 and a high-voltage power supply 3.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example 1
As shown in fig. 1-2, a rapid formaldehyde removing device for discharge plasma comprises a ventilation device 1, a plasma reactor chamber 2 and a high voltage power supply 3, wherein the plasma reactor chamber 2 has a cylindrical structure, an outer diameter of 100mm and a height of 40 mm; the plasma reactor cavity 2 is arranged in the ventilation device 1, an air inlet of the plasma reactor cavity 2 is communicated with an air inlet of the ventilation device 1 through a pipeline, an air outlet of the plasma reactor cavity 2 is communicated with an air outlet of the ventilation device 1 through a pipeline, two planar spiral insulating partition plates 2-5, a plurality of needle electrodes 2-2, plate electrodes 2-3 and insulating top plates 2-4 are arranged in the plasma reactor cavity 2, the number of turns of the two planar spiral insulating partition plates 2-5 is 2, the two planar spiral insulating partition plates 2-5 are mutually nested, the plasma reactor cavity 2 is isolated to form a continuous spiral fluid channel, the width of the cross section of the isolated spiral fluid channel is 30 +/-3 mm, and the insulating top plates 2-4 are arranged at the top of the plasma reactor cavity 2, the plate electrodes 2-3 are arranged at the bottom of the plasma reactor cavity 2 and at the bottom of the continuous spiral fluid channel, the needle electrodes 2-2 are arranged and inserted on the insulating top plate 2-4 and are positioned in the continuous spiral fluid channel, and the needle electrodes 2-2 are arranged along the continuous spiral fluid channel with the distance of 10 mm; the pin electrode 2-2 and the plate electrode 2-3 are connected to an external high voltage power supply 3 through an electrode connection end, in this embodiment 1, the thickness of the insulating top plate 2-4 is 5mm, the length of the pin electrode 2-2 is 10mm, and the discharge voltage of the high voltage power supply 3 is 18.5 kV.
Example 2
As shown in fig. 3-4, a rapid formaldehyde removing device for discharge plasma comprises a ventilation device 1, a plasma reactor chamber 2 and a high voltage power supply 3, wherein the size of the plasma reactor chamber 2 is 110mm × 30mm × 40mm, the plasma reactor chamber 2 is installed in the ventilation device 1, an air inlet of the plasma reactor chamber 2 is communicated with an air inlet of the ventilation device 1, an air outlet of the plasma reactor chamber 2 is communicated with an air outlet of the ventilation device 1, two planar partition plates 2-1, a plurality of pin electrodes 2-2, a plate electrode 2-3 and an insulating top plate 2-4 are arranged in the plasma reactor chamber 2, the planar partition plates 2-1 are installed in the plasma reactor chamber 2 in parallel to form an S-shaped fluid channel, the plasma reactor comprises a plasma reactor cavity 2, an insulating top plate 2-4, plate electrodes 2-3, needle electrodes 2-2, an external high-voltage power supply 3, an electrode connecting end and an electrode connecting end, wherein the insulating top plate 2-4 is arranged at the top of the plasma reactor cavity 2 and is located at the top of an S-shaped fluid channel, the plate electrodes 2-3 are arranged at the bottom of the plasma reactor cavity 2 and are located at the bottom of the S-shaped fluid channel, the needle electrodes 2-2 are connected to the insulating top plate 2-4 in an inserted mode and are located in the S-shaped fluid channel, the needle electrodes 2-2 are arranged in an array of 10 rows and 3 rows, the row spacing is 10mm, the row spacing is 8mm, the needle electrodes 2-2 and the plate electrodes 2-3 are connected with the external high-voltage power supply 3 through the electrode connecting end, in the embodiment 1, the thickness of the insulating top plate 2-4 is 5mm, the length of the needle electrodes 2-2 is 10mm, and the discharge voltage of the high-voltage power supply 3 is 18.5 kV.
The working principle of the invention is as follows:
according to the invention, a high-voltage power supply 3 is utilized to apply voltage between the needle electrode and the plate electrode in the continuous fluid channel, so that corona discharge is formed in the plasma reactor cavity 2. The waste gas containing formaldehyde enters the plasma reactor cavity 2 from the gas inlet of the plasma reactor cavity 2 through the gas inlet of the ventilation device 1, then passes through the continuous fluid channel of the plasma reactor cavity 2, the formaldehyde gas in the waste is removed, and the purified gas flows out of the gas outlet of the plasma reactor cavity and is discharged through the gas outlet of the ventilation device.
The formaldehyde-containing waste gas of different concentrations was introduced into the formaldehyde rapid removal apparatus of example 2 while maintaining the flow rate of the formaldehyde-containing waste gas at 30L/min and the discharge voltage of the high-voltage power supply at 18.5kV, and the removal rates of formaldehyde at different concentrations were measured, and the results are shown in fig. 5. As can be seen from the figure, when the initial concentration of formaldehyde is less than or equal to 40ppm, the formaldehyde degradation rate can reach more than 40%, and when the concentration of formaldehyde is 20ppm, the formaldehyde degradation rate can reach more than 85%, and a high energy efficiency ratio can be maintained.
The formaldehyde removal rates at different flow rates were measured while feeding formaldehyde-containing waste gas at different flow rates to the formaldehyde rapid removal apparatus of example 2 and maintaining the initial concentration of the formaldehyde-containing waste gas at 26.2 ± 0.2ppm and the discharge voltage of the high-voltage power supply at 18.5kV, and the results are shown in fig. 6. When the gas flow is 15L/min, the formaldehyde removal rate can reach 90%, and when the flow rate is 30L/min, the energy efficiency ratio is the maximum, and the formaldehyde removal rate reaches 48%. Therefore, when the size of the plasma reaction chamber is increased or a plurality of plasma reaction chambers are connected in parallel, the treatment rate can be further improved, and the formaldehyde degradation rate can be further improved.
The ventilation device is used for extracting ambient air and realizing air circulation, belongs to the existing device, and therefore, the specific structure is not detailed.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A quick formaldehyde removing device for discharge plasma is characterized by comprising a ventilating device, a plurality of plasma reactor chambers and a high-voltage power supply, wherein the plasma reactor chambers are arranged in the ventilating device, an air inlet of each plasma reactor chamber is communicated with an air inlet of the ventilating device through a pipeline, and an air outlet of each plasma reactor chamber is communicated with an air outlet of the ventilating device through a pipeline;
be equipped with a plurality of baffles, a plurality of needle electrodes, board electrode and insulating roof in every plasma reactor chamber, it is a plurality of the baffle is installed in the plasma reactor chamber, form continuity fluid channel, insulating roof is installed plasma reactor chamber top, and is located continuity fluid channel's top, the board electrode is installed plasma reactor chamber bottom, and be located continuity fluid channel's bottom, it is a plurality of the needle electrode is pegged graft on the insulating roof, and is located in the continuity fluid channel, the needle electrode passes through electrode connection end with the board electrode and is connected outside high voltage power supply.
2. The rapid formaldehyde removing device for the discharge plasma according to claim 1, wherein the plurality of the partition plates are two planar spiral insulating partition plates, and the two planar spiral insulating partition plates are nested with each other to isolate the plasma reaction chamber to form a continuous spiral fluid channel.
3. The rapid formaldehyde removing device as claimed in claim 2, wherein the plasma reactor chamber is cylindrical.
4. The rapid formaldehyde removing device as claimed in claim 2, wherein the spiral number of the spiral insulating partition board is 1-2.
5. The rapid formaldehyde removing device as claimed in claim 1, wherein the plurality of partitions are two planar insulating partitions, and the two planar insulating partitions are installed in parallel in the plasma reactor chamber to form a continuous S-shaped fluid channel.
6. The rapid formaldehyde removal device as claimed in claim 5, wherein the plasma reactor chamber has a rectangular structure.
7. The rapid formaldehyde removing device as claimed in claim 1, wherein the insulating top plate has a thickness of 5 mm.
8. The rapid formaldehyde removing device as claimed in claim 1, wherein the high voltage power supply has a discharge voltage of 15-20 kV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210015513.4A CN114191950A (en) | 2022-01-07 | 2022-01-07 | Quick clearing device of plasma formaldehyde discharges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210015513.4A CN114191950A (en) | 2022-01-07 | 2022-01-07 | Quick clearing device of plasma formaldehyde discharges |
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| Publication Number | Publication Date |
|---|---|
| CN114191950A true CN114191950A (en) | 2022-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210015513.4A Pending CN114191950A (en) | 2022-01-07 | 2022-01-07 | Quick clearing device of plasma formaldehyde discharges |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003001103A (en) * | 2001-06-19 | 2003-01-07 | Daikin Ind Ltd | Plasma reactor |
| US20060156985A1 (en) * | 2003-06-27 | 2006-07-20 | Yukio Miyairi | Apparatus for method of treating exhaust gas |
| JP2011206705A (en) * | 2010-03-30 | 2011-10-20 | Yamatake Corp | Gas treatment apparatus |
| CN104128077A (en) * | 2014-07-14 | 2014-11-05 | 西安交通大学 | Double-layer sleeve type corona plasma generating device |
| CN104162336A (en) * | 2014-08-22 | 2014-11-26 | 成都代代吉前瞻科技股份有限公司 | Efficient combined dust collector |
| CN204672108U (en) * | 2015-05-12 | 2015-09-30 | 连云港佑源医药设备制造有限公司 | A kind of plasma formaldehyde removing device |
| CN105003981A (en) * | 2015-08-13 | 2015-10-28 | 河海大学常州校区 | Air purification device adopting cooperation of plasma, ultrasonic technology and catalysis |
| CN105289297A (en) * | 2015-12-08 | 2016-02-03 | 浙江浙大环境工程有限公司 | Plasma reaction device and method for treating organic waste gases |
| US20170056543A1 (en) * | 2014-02-14 | 2017-03-02 | Lorraine Ingrid Baldry | Air decontamination device & method |
| CN108392951A (en) * | 2018-04-10 | 2018-08-14 | 佛山市三水万瑞达环保科技有限公司 | A kind of low temperature plasma gas purifier |
| CN208431874U (en) * | 2018-02-05 | 2019-01-25 | 深圳市太鸟科技有限公司 | A kind of low concentration formaldehyde air purifier |
| CN209226662U (en) * | 2018-10-26 | 2019-08-09 | 南京易德高臭氧有限公司 | Spiral centrifugal generator |
-
2022
- 2022-01-07 CN CN202210015513.4A patent/CN114191950A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003001103A (en) * | 2001-06-19 | 2003-01-07 | Daikin Ind Ltd | Plasma reactor |
| US20060156985A1 (en) * | 2003-06-27 | 2006-07-20 | Yukio Miyairi | Apparatus for method of treating exhaust gas |
| JP2011206705A (en) * | 2010-03-30 | 2011-10-20 | Yamatake Corp | Gas treatment apparatus |
| US20170056543A1 (en) * | 2014-02-14 | 2017-03-02 | Lorraine Ingrid Baldry | Air decontamination device & method |
| CN104128077A (en) * | 2014-07-14 | 2014-11-05 | 西安交通大学 | Double-layer sleeve type corona plasma generating device |
| CN104162336A (en) * | 2014-08-22 | 2014-11-26 | 成都代代吉前瞻科技股份有限公司 | Efficient combined dust collector |
| CN204672108U (en) * | 2015-05-12 | 2015-09-30 | 连云港佑源医药设备制造有限公司 | A kind of plasma formaldehyde removing device |
| CN105003981A (en) * | 2015-08-13 | 2015-10-28 | 河海大学常州校区 | Air purification device adopting cooperation of plasma, ultrasonic technology and catalysis |
| CN105289297A (en) * | 2015-12-08 | 2016-02-03 | 浙江浙大环境工程有限公司 | Plasma reaction device and method for treating organic waste gases |
| CN208431874U (en) * | 2018-02-05 | 2019-01-25 | 深圳市太鸟科技有限公司 | A kind of low concentration formaldehyde air purifier |
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| CN209226662U (en) * | 2018-10-26 | 2019-08-09 | 南京易德高臭氧有限公司 | Spiral centrifugal generator |
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Application publication date: 20220318 |