CN1698937A - Low-temperature plasma air purification catalytic reactor and its preparation process - Google Patents
Low-temperature plasma air purification catalytic reactor and its preparation process Download PDFInfo
- Publication number
- CN1698937A CN1698937A CN 200510066535 CN200510066535A CN1698937A CN 1698937 A CN1698937 A CN 1698937A CN 200510066535 CN200510066535 CN 200510066535 CN 200510066535 A CN200510066535 A CN 200510066535A CN 1698937 A CN1698937 A CN 1698937A
- Authority
- CN
- China
- Prior art keywords
- weight
- net
- catalyst
- stainless steel
- temperature
- 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.)
- Pending
Links
Images
Abstract
This invention discloses a low-temperature plasma air purification catalytic reactor, in addition to a preparing method, which can be used for removing the secondary pollution of O3 and cleaning air with volatile organics. The reactor comprises a corona discharge power and several pipe-type or plate-pipe type corona discharge devices connected in parallel, wherein inside the anode of the corona discharge devices has a catalyst web whose shape and size is corresponding to the anode, and the web comprises stainless steel cloth and catalyst layer covering the cloth; the catalyst layer comprises the carrier material and active component, wherein the carrier material comprises gamma-Al2O3,CeO2,La2O3 and ZrO2, while the active component comprises one or two elements of Pd, Rh, Pt.
Description
Technical Field
The invention relates to a low-temperature plasma air purification catalytic reactor and a preparation process thereof.
Background
Along with the continuous improvement of living standard, people have higher and higher requirements on indoor air quality, the main purposes of the existing air purification technology are smoke dust and organic matter removal, sterilization, disinfection and deodorization, the air purification technology can be divided into a plurality of technologies such as filtration, absorption, activated carbon adsorption, high-voltage static electricity, low-temperature plasma, ultraviolet rays, photocatalyst and the like according to the working principle, and the existing technology is often the combination of one or more of the technical means. Some medium and coarse particles can be removed by adopting a filtering technology, but the aerosol is difficult to remove; the absorption technology is adopted to remove organic matters, the organic matters need to be periodically replaced, and the environment is polluted when the absorption liquid is poured; the most activated carbon is used for adsorption, but the activated carbon needs to be replaced after the adsorption is saturated, so that the use is inconvenient; when using activated carbon catalysts, because of C and O3A chemical reaction occurs, and the reaction equation is: the active carbon is consumed, and secondary pollution CO is generated; o is generated when low-temperature plasma and high-voltage electrostatic dust collection are adopted3The need to specially arrange a catalytic reactor for removing O3The structure becomes huge, the catalytic reactor needs to be heated to meet the working requirement, and the catalytic reactor has poor purification effect on organic matters with low concentration and large air volume, and is large in energy consumption and uneconomical; when the combination technology of ultraviolet rays and photocatalyst is adopted, the actual effect is not good, certain water molecules are needed, the reaction is not thorough, and secondary pollution exists.
Disclosure of Invention
Object of the Invention
The invention aims to solve the technical problem of providing a high-efficiency energy-saving3Secondary pollution, can treat air with low volatile organic matter content and large air volume, and can be used for a long time, and the low-temperature plasma air purification catalytic reactor has stable performance and convenient maintenance.
The invention aims to solve another technical problem of providing a preparation process of a low-temperature plasma air purification catalytic reactor.
Disclosure of Invention
In order to solve the problems, the invention provides a low-temperature plasma air purification catalytic reactor, which comprises a corona discharge high-voltage power supply and more than one corona discharger, wherein the corona discharger is of a pipeline type or plate line type structure, the corona dischargers are connected in parallel, a catalyst lining net is arranged on the inner side of a positive electrode of each corona discharger, the shape and the size of the catalyst lining net correspond to those of the positive electrode of each corona discharger, the catalyst lining net is composed of a stainless steel wire net and a catalyst layer coated on the stainless steel wire net, the catalyst layer is composed of a carrier material and active ingredients, and the carrier material comprises 100 parts by weight of gamma-Al2O310 to 15 parts by weight of CeO23 to 5 parts by weight of La2O32 parts by weight of ZrO2The active component is composed of any one or two of Pd, Rh and Pt elements in an amount of 0.1-0.5 parts by weight.
Preferably, the catalyst lining net in the anode tube of the pipeline corona discharger can be cylindrical, and the outer diameter of the cylindrical catalyst lining net is slightly smaller than the inner diameter of the anode tube; the catalyst lining net in the positive tube of the plate-line corona discharger can also be plate-shaped, and the area of the plate-shaped catalyst lining net is slightly smaller than that of the positive plate.
Preferably, the catalyst backing net can be in contact with the inner wall of the positive electrode of the corona discharger.
Preferably, a catalyst coating with the thickness of 3-5 μm can be arranged on the inner wall of the positive electrode of the pipeline type or plate-line type corona discharger, the catalyst coating contains one or two of Pd, Rh and Pt elements, and the positive electrode plate is prepared by the following process steps:
① roughening the blank sheet;
② washing with water after removing oil, corroding in oxalic acid, then anodizing, washing and drying;
③ coating Pd black, Rh black or Pt black directly on the positive plate, orH is sprayed or brushed on the positive plate with the concentration of 10 g/L2PtCL6、PdCl2Or RhCl3After the solution is dried and reduced by hydrogen, the temperature of the reduction reaction is 300 ℃ when the solution is sprayed or coated with Pd or Rh element, the temperature of the reduction reaction is 450 to 500 ℃ when the solution is sprayed or coated with Pt element, and the reduction time is 2 hours.
The weight portions refer to g, kg, ton and the like.
The corona wire of the corona discharger can be made of molybdenum wire or stainless steel wire, and the anode can be made of aluminum plate or stainless steel plate.
The invention also provides a preparation process for the low-temperature plasma air purification catalytic reactor, wherein the preparation of the catalyst comprises the following steps:
① making stainless steel wire net into plate or rolling into cylinder and welding the seam of the cylinder;
② corroding the stainless steel net obtained in step ① in oxalic acid, washing with clear water, anodizing, and forming an oxide film on the stainless steel wire;
③ taking 100 parts by weight of gamma-Al2O3Adding water for wetting, stirring, adding 1 part by weight of HNO3Pulping, adding 1 part by weight of binder, and then adding 10-15 parts by weight of CeO2Powder, 3&5 parts by weight of La2O3Powder of 2 parts by weight of ZrO2Uniformly stirring the powder to form slurry, immersing the stainless steel mesh obtained in the step ② into the obtained slurry, taking out after 3-5 minutes, blowing off redundant paint parts by using compressed air, drying for two hours at the temperature of 100 ℃, and sintering for one hour at the temperature of 500 ℃;
④ stainless steel wire net obtained in the above step is put in H with the concentration of 10 g/L2PtCL6、PdCl2、RhCl3Soaking in one or more compound solutions for 3-5 min, taking out, drying at 100 deg.C for two hours, sintering at 500 deg.C for one hour, and reducing with hydrogen gas when the soaked metal is Pd or Rh elementWhen the element is used, the temperature of the reduction reaction is 300 ℃, when the impregnated metal is Pt element, the temperature of the reduction reaction is 450 to 500 ℃, and the reduction time is 2 hours.
The power supply adopted by the invention is as follows: the DC voltage is 7-10 KV, and the pulse voltage is 7-20 KV.
When sintering, a tube furnace can be adopted for continuous feeding and discharging, the middle section of the furnace is a constant temperature section, and the constant temperature is 500 ℃.
The binder used in the present invention may be Al (NO)3)3·9H2O。
The working principle of the low-temperature plasma air purification catalytic reactor is as follows:
air enters a corona discharger and passes through an ionization field between a positive electrode and a negative electrode from an anode tube of the pipeline type corona discharger or between an upper polar plate and a lower polar plate of the plate-line type corona discharger, a large amount of high-energy electrons are generated after the corona discharger is electrified, the high-energy electrons collide volatile organic matters in the air to form organic free radicals and fragments, the substances have high chemical activity, meanwhile, the high-energy electrons also collide oxygen in the air to form oxygen atoms and ozone molecules, the substances have high oxidation capacity, and a catalyst on a stainless steel wire net adsorbs the substances to perform catalytic reaction, so that harmful volatile organic matters in the air are reacted into harmless carbon dioxide and water, and the ozone is reacted into oxygen; meanwhile, the catalyst can also adsorb ammonia in the air to react with oxygen togenerate nitrogen and water, so that organic volatile matters and ammonia in the air are changed into harmless substances, the air is purified, secondary pollution such as ozone is avoided, and the reaction equation is as follows:
the reaction equation for benzene elimination:
the reaction equation for eliminating ammonia gas:
reaction equation for ozone elimination:
the reaction equation for eliminating formaldehyde:
organic volatiles in the air are converted to harmless carbon dioxide and water by ① and ⑤ reactions;
the ammonia in the air is converted into harmless nitrogen and water through ②;
ozone is converted to oxygen by the reactions of ③ and ④, thereby eliminating secondary pollution.
The invention has the advantages that:
(1) the invention achieves the aim by placing the catalyst lining on the inner side of the polar plate of the corona discharger, thereby leading the product of the invention to have compact structure.
(2) The invention can process air with low organic content and large air quantity by accelerating chemical reaction with catalyst under the condition of generating low-temperature plasma.
(3) The catalyst of the invention can be used for a long time, does not need to be replaced more frequently, and is convenient to maintain.
(4) The technical scheme of the invention is realized without the intervention of moisture in the air, so that the air purification effect is not influenced by the moisture content in the air.
(5) The invention changes the ozone generated by the high-energy electrons impacting the air into harmless oxygen through catalytic reaction, thereby having no secondary pollution of the ozone.
Drawings
FIG. 1 is a schematic diagram of an in-line corona discharger;
FIG. 2 is a schematic diagram of an inline corona discharger assembly;
FIG. 3 is a schematic diagram of a plate-line corona discharger;
FIG. 4 is a schematic diagram of a plate-line corona discharger assembly;
wherein, figure 1 is an anode tube, 2 is a corona wire, 3 is a catalyst coating, 4 is a catalyst net, 5 is a power supply, and 6 is a corona electrode frame formed by stainless steel bars.
Detailed Description
The examples of the present invention are only for explaining the present invention and do not limit the present invention.
Example 1
Taking a stainless steel wire mesh containing 25% of Cr, wherein the wire diameter is 0.3mm, and the side length of a mesh is 1mm, rolling the stainless steel wire mesh into a barrel, and welding a seam; corroding in oxalic acid, washing with clear water, anodizing and forming an oxide film on the filament; taking 100 parts by weight of gamma-Al2O3Adding water for wetting, stirring uniformly, and adding 1 part by weight of concentrated HNO3Pulping, adding 1 weight part of binder Al (NO)3)3·9H2O, then adding 10 parts by weight of CeO2Powder, 3 parts by weight of La2O3Powder of 2 parts by weight of ZrO2Stirring the powder to obtain slurry, soaking the oxidized stainless steel mesh in the slurry for 3 min, blowing off the excessive paint with compressed air, drying at 100 deg.C for two hr, and collecting the filtrateDrying, namely, automatically and continuously feeding and discharging materials by adopting a tube furnace, wherein the sintering time of the materials in and out of the furnace is one hour, the furnace is divided into constant-temperature sections, and the constant-temperature is 500 ℃.
Sintering the stainless steel wire mesh with the coating obtained in the step, and adding H with the concentration of 10 g/L2PtCl6Soaking in the solution for 3 min, taking out, drying at 100 deg.C for two hours, sintering at 500 deg.C in a tubular furnace for one hour, and reducing with hydrogen at 450 deg.C for 2 hours.
Referring to fig. 1 and 2, the catalyst net (4) is placed in an anode tube (1) made of aluminum, and the catalyst roll (4) can be in contact with the inner wall of the anode tube (1). All the anode tubes (1) are connected in parallel and tightly squeezed to enable the outer walls of the anode tubes (1) to be tightly contacted, and are arranged on a frame seat made of plastic, corona wires (2) made of molybdenum wires are arranged on the central line of the anode tubes (1), then all the corona wires (2) are connected in parallel through stainless steel rods (6), the corona wires (2) can be adjusted and tightly squeezed through springs, the corona wires (2) are prevented from being broken due to the fact that the aluminum tubes (1) are stretched in the working state when the temperature changes, and the assembled corona dischargers which are connected in parallel are connected in series with a power supply (5) with the direct current voltage of 7-10 KV and the pulse voltage of 7-20 KV.
The product obtained in the embodiment is numbered 1, and the purification effect is shown in tables 1-4.
Similarly, when the metal element on the stainless steel wire mesh is Pd or Rh, the same effect can be obtained.
Example 2
Referring to fig. 1 and 2, when a product is prepared by using the method described in example 1, the inner wall of the cathode tube may be treated to make a layer of catalyst with a chemical component of Pt attached to the inner wall of the cathode tube, and the process includes the following steps:
(1) roughening an aluminum plate, sanding the surface by using sand paper, removing oil, washing by using water, corroding in 2% oxalic acid, anodizing, washing and drying;
(2) and (2) spraying a Pt element salt solution with the concentration of 10 g/L on the aluminum plate obtained in the step (1), drying, and then reducing by using hydrogen, wherein the reduction reaction temperature is 480 ℃, and the reduction time is 2 hours.
The aluminum plate can also be directly brushed with Pt black to make the thickness of the Pt black 5 μm.
The product obtained in the embodiment is numbered 2, and the purification effect is shown in tables 1-4.
Similarly, the same effect can be obtained when the chemical composition of the catalyst on the inner wall of the positive electrode tube is Pd or Rh element.
Example 3
Taking a stainless steel screen containing Cr 25% with the wire diameter of 0.3mm and the side length of a mesh of 1mm, and processing the stainless steel screenThe net is made into a plate shape atCorroding in 6 percent oxalic acid, washing with clear water, anodizing and forming an oxide film on the silk; taking 100 parts by weight of gamma-Al2O3Adding water for wetting, stirring uniformly, and adding 1 part by weight of concentrated HNO3Pulping, adding 1 weight part of binder Al (NO)3)3·9H2O, then adding 15 weight portions of CeO2Powder, 5 parts by weight of La2O3Powder of 2 parts by weight of ZrO2The powder is stirred evenly to form slurry, then the oxidized stainless steel mesh is immersed into the obtained slurry, the slurry is taken out after 4 minutes, the redundant coating part is blown off by compressed air, and then the slurry is dried for two hours at the temperature of 100 ℃, and then the drying is carried out, a tube furnace can be adopted for continuous feeding and discharging, the middle section of the furnace is a constant temperature section, and the constant temperature is 500 ℃.
Subjecting the stainless steel wire mesh obtained in the step to RhCl treatment at the concentration of 10 g/L3The solution of (a) is immersed for 4 minutes, taken out and dried for two hours at the temperature of 100 ℃, then sintered for one hour at the temperature of 500 ℃, and then reduced for two hours by hydrogen, wherein the temperature of the reduction reaction is 300 ℃.
Referring to fig. 3 and 4, the catalyst mesh (4) formed in a plate shape is placed inside the positive electrode plate (1) formed of stainless steel, and the catalyst mesh (4) formed in a plate shape can contact the inner wall of the positive electrode plate (1). All the positive plates (1) are tightly connected in parallel and are tightly contacted, then the positive plates are arranged on a frame seat made of plastic, corona wires (2) made of stainless steel wires are arranged between the positive plates (1), then all the corona wires (2) are connected in parallel by using stainless steel rods (6), the corona wires (2) can be tightly adjusted and squeezed by using springs, the corona wires (2) are prevented from being broken due to the extension of an aluminum pipe in a working state due to temperature change, and the assembled corona discharger connected in parallel is connected with a power supply (5) with the direct current voltage of 7-10 KV and the pulse voltage of 7-20 KV in series.
The product obtained in the embodiment is numbered 3, and the purification effect is shown in tables 1-4.
Similarly, when the catalyst active component on the stainless steel screen is Pd or Pt, the same effect can be achieved.
Example 4
Referring to fig. 3 and 4, when the product is prepared by the method of example 3, the inner wall of the stainless steel positive plate can be treated to make a layer of catalyst containing Pd element as chemical component attached to the inner wall of the positive plate, and the process includes the following steps:
(1) roughening a stainless steel plate, sanding the surface by using sand paper, removing oil, washing by using water, corroding in 5% oxalic acid, then anodizing, washing and drying;
(2) and (2) spraying or brushing a Pd element salt solution with the concentration of 10 g/L on the stainless steel plate obtained in the step (1), drying, and reducing by using hydrogen at the reduction reaction temperature of 300 ℃ for 2 hours.
The aluminum plate may also be coated with Pd black directly so that the thickness of the Pd black is 3 μm.
The product obtained in the embodiment is numbered 4, and the purification effect is shown in tables 1-4.
Similarly, the same effect can be obtained when the catalytic chemical composition on the inner wall of the positive electrode tube is Pt or Rh.
TABLE 1 purifying effect for removing ammonia gas from air
Detection standard: GB50325-2001.6.0.4
TABLE 2 purifying effect for removing formaldehyde from air
Detection standard: GB50325-2001.6.0.4
TABLE 3 purifying effect for removing benzene from air
Detection standard: GB50325-2001.6.0.4
TABLE 4 ozone removal effect under operating conditions
Detection standard was CJ/T3028.2-94 using iodometry.
The experimental data are obtained by testing in a standard 30 cubic meter laboratory.
Claims (8)
1. The utility model provides a low temperature plasma air purification catalytic reactor, includes corona discharge high voltage power supply and more than one corona discharger, the corona discharger be pipeline formula or board line formula structure, the corona discharger between adopt parallel mode to connect, its characterized in that there is a catalyst lining net positive pole inboard of corona discharger, the shape and the size of catalyst lining net are corresponding with positive shape and the size of corona discharger, the catalyst lining net comprises stainless steel net and the catalytic layer of cladding on stainless steel net, the catalytic layer includes carrier material and active ingredient, carrier material is by 100 parts by weight gamma-Al2O310 to 15 parts by weight of CeO23 to 5 parts by weight of La2O32 parts by weight of ZrO2The active component comprises 0.1-0.5 weight part of any one or two of Pd, Rh and Pt elements.
2. The low-temperature plasma air purification catalytic reactor as claimed in claim 1, wherein the catalyst backing net in the anode tube of the in-line corona discharger is cylindrical, and the outer diameter of the cylindrical catalyst backing net is slightly smaller than the inner diameter of the anode tube.
3. The low-temperature plasma air purification catalytic reactor as claimed in claim 1, wherein the catalyst backing net in the positive electrode tube of the plate-line corona discharger is plate-shaped, and the area of the plate-shaped catalyst backing net is slightly smaller than that of the positive electrode plate.
4. The low temperature plasma air purification catalytic reactor according to claim 2 or 3, wherein the catalyst backing net may be in contact with an inner wall of the positive electrode of the corona discharger.
5. The low-temperature plasma air purification catalytic reactor as claimed in claim 1, wherein a catalyst layer with a thickness of 3-5 μm is arranged on the inner wall of the positive electrode of the pipeline type or plate-line type corona discharger, and the catalyst layer contains one or two of Pd, Rh and Pt elements, and is prepared by the following process steps:
① roughening the blank sheet;
② washing with water after removing oil, corroding in oxalic acid, then anodizing, washing and drying;
③ the positive plate is coated with Pd black, Rh black or Pt black directly or with H at a concentration of 10 g/l2PtCL6、PdCl2Or RhCl3After the solution is dried and reduced by hydrogen, the temperature of the reduction reaction is 300 ℃ when the solution is sprayed or coated with Pd or Rh element, the temperature of the reduction reaction is 450 to 500 ℃ when the solution is sprayed or coated with Pt element, and the reduction time is 2 hours.
6. The low-temperature plasma air purification catalytic reactor as claimed in claim 1, wherein the corona wire of the corona discharger is made of molybdenum wire or stainless steel wire, and the positive plate is made of aluminum plate or stainless steel plate.
7. The process for preparing a low-temperature plasma air purification catalytic reactor as claimed in claim 1, wherein the manufacturing of the catalyst backing net comprises the following steps:
① making stainless steel wire net into plate or rolling into cylinder and welding the seam of the cylinder;
② corroding the stainless steel net obtained in step ① in oxalic acid, washing with clear water, anodizing, and forming an oxide film on the stainless steel wire;
③ taking 100parts by weight of gamma-Al2O3Adding water for wetting, stirring uniformly, and adding 1 part by weight of concentrated HNO3Pulping, adding 1 part by weight of binder, and then adding 10-15 parts by weight of CeO2Powder, 3-5 parts by weight of La2O3Powder of 2 parts by weight of ZrO2The powder is mixed evenly into slurry, which is prepared from
②, soaking the stainless steel net obtained in the step into the obtained slurry, taking out after 3-5 minutes, blowing off the redundant coating part by using compressed air, drying for two hours at the temperature of 100 ℃, and sintering for one hour at the temperature of 500 ℃;
④ stainless steel wire net obtained in the above step is put in H with the concentration of 10 g/L2PtCL6、PdCl2、RhCl3Soaking one or more than one compound solution in the solution for 3-5 minutes, taking out, drying for two hours at the temperature of 100 ℃, then sintering for one hour at the temperature of 500 ℃, and then reducing by using hydrogen, wherein when the soaked metal is Pd or Rh element, the temperature of the reduction reaction is 300 ℃; when the impregnated metal is Pt element, the reduction reaction temperature is 450 to 500 ℃, and the reduction time is 2 hours.
8. The process of claim 7, wherein the binder is Al (NO)3)3·9H2O。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510066535 CN1698937A (en) | 2005-04-28 | 2005-04-28 | Low-temperature plasma air purification catalytic reactor and its preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510066535 CN1698937A (en) | 2005-04-28 | 2005-04-28 | Low-temperature plasma air purification catalytic reactor and its preparation process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1698937A true CN1698937A (en) | 2005-11-23 |
Family
ID=35475286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510066535 Pending CN1698937A (en) | 2005-04-28 | 2005-04-28 | Low-temperature plasma air purification catalytic reactor and its preparation process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1698937A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102958264A (en) * | 2012-11-20 | 2013-03-06 | 浙江大学 | Plasma generation device and method based on back corona creeping-surface breakdown of catalyst as well as application thereof |
| CN104959004A (en) * | 2015-06-30 | 2015-10-07 | 成都市新都区鑫悦空气净化设备厂 | Electric ion field for paint mist treatment |
| CN104959005A (en) * | 2015-06-30 | 2015-10-07 | 成都市新都区鑫悦空气净化设备厂 | Electric ion field for paint mist treatment |
| CN105879671A (en) * | 2016-06-01 | 2016-08-24 | 清华大学合肥公共安全研究院 | Low-temperature plasma air-sterilizing purification module |
| KR101779985B1 (en) * | 2014-11-13 | 2017-09-19 | 한국기계연구원 | Plasma reactor |
| CN107252627A (en) * | 2017-06-27 | 2017-10-17 | 中煤科工集团西安研究院有限公司 | A kind of VOCs handling process and equipment |
| CN108654836A (en) * | 2018-04-19 | 2018-10-16 | 昆明理工大学 | The method and apparatus of magnetic strength electrofiltration dedusting cooperating with low-temperature plasma for purification toxic gas |
| CN108993499A (en) * | 2018-07-19 | 2018-12-14 | 天津大学 | A kind of preparation method of the rare earth metal oxide catalyst of the monatomic Pt of load of constant temperature catalyzing degradation VOCs |
| CN109013231A (en) * | 2018-05-24 | 2018-12-18 | 北京航空航天大学 | The method of catalytic decomposition of ozone material is coated on the collecting polar plate of electrostatic outdoor fresh air or indoor air purification |
| CN110152481A (en) * | 2019-04-11 | 2019-08-23 | 南京大学环境规划设计研究院股份公司 | It is a kind of can in-situ regeneration VOCs adsorption photochemical catalysis and ozone cooperative purification method and device |
-
2005
- 2005-04-28 CN CN 200510066535 patent/CN1698937A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102958264B (en) * | 2012-11-20 | 2015-04-22 | 浙江大学 | Plasma generation device and method based on back corona creeping-surface breakdown of catalyst as well as application thereof |
| CN102958264A (en) * | 2012-11-20 | 2013-03-06 | 浙江大学 | Plasma generation device and method based on back corona creeping-surface breakdown of catalyst as well as application thereof |
| KR101779985B1 (en) * | 2014-11-13 | 2017-09-19 | 한국기계연구원 | Plasma reactor |
| CN104959004A (en) * | 2015-06-30 | 2015-10-07 | 成都市新都区鑫悦空气净化设备厂 | Electric ion field for paint mist treatment |
| CN104959005A (en) * | 2015-06-30 | 2015-10-07 | 成都市新都区鑫悦空气净化设备厂 | Electric ion field for paint mist treatment |
| CN105879671B (en) * | 2016-06-01 | 2018-08-28 | 清华大学合肥公共安全研究院 | Low temperature plasma air sterilization cleaning module |
| CN105879671A (en) * | 2016-06-01 | 2016-08-24 | 清华大学合肥公共安全研究院 | Low-temperature plasma air-sterilizing purification module |
| CN107252627A (en) * | 2017-06-27 | 2017-10-17 | 中煤科工集团西安研究院有限公司 | A kind of VOCs handling process and equipment |
| CN108654836A (en) * | 2018-04-19 | 2018-10-16 | 昆明理工大学 | The method and apparatus of magnetic strength electrofiltration dedusting cooperating with low-temperature plasma for purification toxic gas |
| CN109013231A (en) * | 2018-05-24 | 2018-12-18 | 北京航空航天大学 | The method of catalytic decomposition of ozone material is coated on the collecting polar plate of electrostatic outdoor fresh air or indoor air purification |
| CN108993499A (en) * | 2018-07-19 | 2018-12-14 | 天津大学 | A kind of preparation method of the rare earth metal oxide catalyst of the monatomic Pt of load of constant temperature catalyzing degradation VOCs |
| CN110152481A (en) * | 2019-04-11 | 2019-08-23 | 南京大学环境规划设计研究院股份公司 | It is a kind of can in-situ regeneration VOCs adsorption photochemical catalysis and ozone cooperative purification method and device |
| CN110152481B (en) * | 2019-04-11 | 2023-10-27 | 南京大学环境规划设计研究院集团股份公司 | VOCs adsorption photocatalysis and ozone synergistic purification method and device capable of in-situ regeneration |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1698937A (en) | Low-temperature plasma air purification catalytic reactor and its preparation process | |
| CN105597529B (en) | A kind of technique and device of low-temperature plasma synergistic two-stage catalytic degradation industrial organic exhaust gas | |
| CN105864908A (en) | Multistage plasma air purifier | |
| CN1895752A (en) | Device for catalyzing and purifying indoor harmful gas | |
| CN1788839A (en) | Foamed aluminum carried titanium dioxide catalyst, its preparation method and uses | |
| CN102744077B (en) | Preparation method of sintered metal fiber bundle catalyst, catalyst and device | |
| CN1562795A (en) | Photoelectrocatalysis and oxidation device for treating organic substance in water | |
| CN109046019A (en) | A kind of the volatile organic compounds processing unit and method of low energy consumption | |
| CN202762284U (en) | Low-temperature plasma reaction tube for harmful gas purification | |
| CN112870910B (en) | VOC gas electro-adsorption-catalytic degradation device and technology | |
| CN2656867Y (en) | High-adsorptivity multifunctional air purifier | |
| CN105879671B (en) | Low temperature plasma air sterilization cleaning module | |
| CN207042249U (en) | The device of photocatalysis treatment volatile organic matter | |
| CN202724994U (en) | Device for governing waste gas by plasma catalysis | |
| CN1276224C (en) | Multifunctional air purifier with high adsorbability | |
| JP4806108B2 (en) | Deodorizing device | |
| CN110038425B (en) | graphene-TiO 2 Photocatalytic air purifier | |
| KR20230088398A (en) | Air purifying device and air purifying method | |
| CN209138347U (en) | A kind of volatile organic compounds processing unit of low energy consumption | |
| CN110193337A (en) | A kind of photochemical catalyst fiber felt fixed-bed type Photoreactor and preparation method thereof | |
| CN201361582Y (en) | Air purifier | |
| CN107866216B (en) | Catalyst, and process and device for purifying formaldehyde by using same | |
| CN106352424B (en) | Wide-spectrum ultraviolet sterilization system | |
| CN203555979U (en) | Non-uniform dielectric barrier discharge/nano TiO2 air-conditioning system cleaning and sterilizing device | |
| CN210545704U (en) | Electric purification equipment and air purifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |