CN1785485A - Plasma discharge catalytic air purifier - Google Patents
Plasma discharge catalytic air purifier Download PDFInfo
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- CN1785485A CN1785485A CN 200510114204 CN200510114204A CN1785485A CN 1785485 A CN1785485 A CN 1785485A CN 200510114204 CN200510114204 CN 200510114204 CN 200510114204 A CN200510114204 A CN 200510114204A CN 1785485 A CN1785485 A CN 1785485A
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Abstract
A plasma discharging-catalyzing cleaner for cleaning air by removing dust, degradating VDC and sterilization has a plasma discharging-catalyzing region, where plasma discharging can generate plasma and UV ray for catalyzing the semiconductor photocatalyst chosen from TiO2, ZnO, ZnS, Fe2O3, CdS, CdSe and WO3 to generate free hydroxy radicals, which can degradate harmful gas and kill bacteria.
Description
Technical field:
Plasma discharge catalytic air purifier belongs to environmental protection and medicine and hygiene fields, specially refers to the air purifying process field.
Background technology:
Along with the progress of science and technology and the development of human civilization, the air quality that the mankind depend on for existence is but descending, and especially room air pollution is also being increasingly sharpened.Room air pollution mainly is that harmful biodegradable organic compounds pollutes and microbial contamination.These pollutions can cause multiple disease, as leukaemia, cancer etc.Therefore, human settlements green environment how to create a cleaning is the cardinal task that is related to the healthy even life security of broad masses of the people.
In order to purify contaminated air, people have developed various air purifiers.Indoor air cleaner mainly is to be divided into cleaning type air purifier, degerming formula air purifier and to remove three types of VOC (VOC) formula air purifiers.The air purifier of selling on the domestic market mainly is the cleaning type air purifier at present, though the photo-catalytic air cleaner of Chu Xianing had the function of degraded VOC on principle in recent years, actual efficiency is very undesirable.
By retrieval, in existing document, do not utilize the purification techniques of plasma discharge catalytic degraded pernicious gas.
Summary of the invention:
The objective of the invention is to, proposed a kind of plasma discharge catalytic air purifying process, the present invention is dedusting well, and the VOC that can degrade effectively again, and energy sterilization are the novel air purification techniques that integrates three functions.
The invention is characterized in, a plasma discharge catalytic district is arranged after the dedusting area of clarifier, this plasma discharge catalytic district is that plasma discharge produces plasma and ultraviolet light carries out catalysis to semiconductor light-catalyst, produces that hydroxyl radical free radical is degraded to pernicious gas and the plasma discharge catalytic district of sterilization.
The electrode that the corona discharge electrode that can produce plasma and load have semiconductor light-catalyst is contained in described plasma discharge catalytic district.
The catalysis subarea is contained in described plasma discharge catalytic district, the electrode that the corona discharge electrode that is arranged in order and load have semiconductor light-catalyst is contained in this catalysis subarea on the vertical direction of gas circuit, described load has between the electrode of semiconductor light-catalyst parallel with one another, has two adjacent loads between the electrode of semiconductor light-catalyst corona discharge electrode parallel with one another is arranged.
Two or more catalysis subareas of series connection successively on gas circuit are contained in described plasma discharge catalytic district, and stagger in the position of the corona discharge electrode in adjacent catalysis subarea and load electrode that semiconductor light-catalyst is arranged.
Above-mentioned corona discharge electrode can be zigzag, star, prickle shape, fishbone, line electrode or pin electrode.It can be net electrode, plate electrode, template electrode, pipe electrode or cellular electrode that load has the electrode of semiconductor light-catalyst.
Described semiconductor light-catalyst is:
TiO
2, ZnO, ZnS, Fe
2O
3, CdS, CdSe or WO
3Particle, or
Be doped with any one or a few the TiO among precious metals pt, Pd, Au, Rh or the Ag
2, ZnO, ZnS, Fe
2O
3, CdS, CdSe or WO
3Particle, or
By TiO
2, ZnO, ZnS, Fe
2O
3, CdS, CdSe or WO
3The composite semiconductor light-catalyst of compound composition between particle, or
By TiO
2, ZnO, ZnS, Fe
2O
3, CdS, CdSe or WO
3In the particle any one or a few and ZnO
2, HgS, PbS,, AgI, SnO
2, SiO
2, ZrO
2Or Al
2O
3In the composite semiconductor light-catalyst of any one or a few compound composition.
Described dedusting area can adopt the corona discharge of severe non-uniform electric field to produce plasma, makes dust charged, and corona discharge electrode is zigzag, star, prickle shape, fishbone, line electrode or pin electrode, and another electrode is plate electrode or template electrode.Described dedusting area can also adopt dust removal by filtration or absorption dedusting.
Described dedusting area can be the two-region, and the I district is a charging area, and the II district is a dust collection section.At this moment plasma discharge catalytic air purifier has just become three district's plasma discharge catalytic air purifiers, and the I district is a charging area, and the II district is a dust collection section, and the III district is a catalytic domain.
Experiment showed, effectively dedusting of plasma discharge catalytic air purifier proposed by the invention, and effectively degrade VOC and sterilization, reached its intended purposes.
Description of drawings:
Fig. 1 is three district's plasma discharge catalytic air purifier schematic diagrames, and Fig. 1 (a) is a front view, and Fig. 1 (b) is a vertical view.
Fig. 2 is the structural representation of another kind of three district's plasma discharge catalytic air purifiers, and catalytic domain has only a catalysis subarea among the figure, and Fig. 2 (a) is a front view, and Fig. 2 (b) is a vertical view.
Fig. 3 is the structural representation that Fig. 2 catalytic domain contains 3 catalysis subareas.
1 is zigzag point electrode among the above-mentioned figure, and 2 is plate electrode, and 3 is the net electrode, and 4 is zigzag point electrode group.
The specific embodiment:
" plasma discharge catalytic air purifier " that the present invention proposes is divided into two parts, dedusting area and plasma discharge catalytic district.Dedusting area can be divided into single district's dedusting and two kinds of structures of two-region dedusting again.For single district's dedusting, dedusting area produces plasma by the corona discharge of severe non-uniform electric field, plasma is attached on the dust and makes dust do directed movement under electric field force and mechanical force (wind-force produces in by blower fan or central air conditioner system) effect, and dust is attracted on the electrode; For the two-region dedusting, dedusting area is divided into charging area and dust collection section again, wherein charging area is identical with the dedusting area of above-mentioned single district's dedusting, in charging area, there is not the dust of Ex-all under electric field force and mechanical force, to arrive dust collection section, by the electrode absorption of gathering dust of dust collection section, so the efficiency of dust collection of two-region dedusting is than the efficiency of dust collection height of single district's dedusting.Dedusting area also can adopt filters and adsorption form.The plasma discharge catalytic district with the semiconductor light-catalyst particle (as TiO
2, ZnO, ZnS, Fe
2O
3, CdS, CdSe, WO
3Deng) adopt anti-oxidant AB glue to be carried on the stainless (steel) wire electrode (can have many orders to arrange), photocatalyst particles can produce a large amount of electronics one hole under plasma (can produce a large amount of plasmas and the ultraviolet light) catalysis of the corona discharge generation of severe non-uniform electric field right, and the water reaction of hole and catalyst surface generates the extremely strong hydroxyl radical free radical of oxidability.The oxidation-reduction potential of hydroxyl radical free radical is 2.80V, and almost the strongest with occurring in nature oxidability fluorine (its oxidation-reduction potential is 2.87V) is suitable, therefore, it can the nearly all organic matter of oxidation, even permineralization, simultaneously, hydroxyl radical free radical is killing pathogenic bacteria virus effectively.Because plasma and ultraviolet light that this district adopts the corona discharge of severe non-uniform electric field to produce carry out catalysis to catalyst simultaneously, its catalytic action will be far above simple photocatalysis, thereby efficient and the sterilization effect of the VOC that degrades are better than simple photocatalysis.In order to improve the catalytic capability of catalyst, above-mentioned semiconductor light-catalyst TiO
2, ZnO, ZnS, Fe
2O
3, CdS, CdSe, WO
3Deng in the noble metals such as Pt, Pd, Au, Rh, Ag that can mix; In order to increase specific area, improve reaction rate, can compound composition composite semiconductor light-catalyst between above-mentioned semiconductor light-catalyst, or above-mentioned semiconductor light-catalyst can with ZnO
2, HgS, PbS,, AgI, SnO
2, SiO
2, ZrO
2, Al
2O
3Etc. compound composition composite semiconductor light-catalyst.
Fig. 1 is the internal structure schematic diagram of three district's plasma discharge catalytic air purifiers.
The I district is a charging area, adopts the corona discharge of severe non-uniform electric field to produce plasma, makes dust charged, and corona electrode is a zigzag point electrode, and corona electrode also can be star, prickle shape, fishbone, line electrode or pin electrode etc.; Another electrode is a plate electrode, also can be template electrode etc.Voltage can be DC voltage, or pulse voltage etc.
The II district is a dust collection section, adopts uniform electric field or non-uniform electric field slightly, and electrode is a plate electrode, also can be template electrode, cylindrical electrode combination etc.Voltage can be DC voltage, or pulse voltage etc.
The III district is a catalytic domain, adopt the corona discharge of severe non-uniform electric field to produce plasma and ultraviolet light, simultaneously catalyst is carried out catalysis, its catalytic action will be far above simple photocatalysis, thereby the efficient of degraded VOC and the effect of sterilization are better than simple photocatalysis.Corona electrode is a zigzag point electrode, and corona electrode also can be star, prickle shape, fishbone, line electrode or pin electrode etc.The electrode of supported catalyst is stainless (steel) wire electrode (can have many) among the figure, also can be plate electrode, template electrode, pipe electrode or cellular electrode etc., is beneficial to air and flows; The electrode structure in III district also can be identical with the I district, at this moment can be with catalyst cupport on plate electrode.
Another kind of scheme as shown in Figure 2, wherein the I district is consistent with Fig. 1 with the II district, III has adopted in the district another kind of mode, plate electrode (or other electrode) by zigzag point electrode group (or other corona discharge electrode) and load semiconductor catalyst is arranged in order on the vertical direction of gas circuit, parallel with one another between the plate electrode, zigzag point electrode group parallel with one another is arranged between two adjacent plate electrodes.
Catalytic domain among Fig. 2 can have two or more catalysis subareas to be composed in series on gas circuit, as shown in Figure 3.The internal structure in each subarea is the same with the catalytic domain of Fig. 2, and the electrode between the adjacent catalysis subarea staggers mutually, the plate electrode in a catalysis subarea after the zigzag point electrode group correspondence in promptly previous catalysis subarea; The sawtooth in catalysis subarea point electrode group after the plate electrode correspondence in last catalysis subarea.The gas that does not contact with plate electrode semiconductor-on-insulator photochemical catalyst by last catalysis subarea zigzag point electrode position just has an opportunity to contact with semiconductor light-catalyst in one catalysis subarea, back like this, thereby has improved the ability of degraded VOCs and sterilization.If a turbulent device is set in gas circuit, effect can be better.
Equally, the corona discharge electrode in Fig. 2 and the scheme shown in Figure 3 also can be star, prickle shape, fishbone, line electrode or pin electrode etc., and the electrode of supported catalyst also can be template electrode, cylindrical electrode combination, net electrode, pipe electrode etc.
Blower fan among the figure is in order to make air guided motion, if use in central air conditioner system, and can be without blower fan.
Claims (10)
1, plasma discharge catalytic air purifier, contain dedusting area, it is characterized in that, after described dedusting area, also has a plasma discharge catalytic district, this plasma discharge catalytic district is that plasma discharge produces plasma and ultraviolet light carries out catalysis to semiconductor light-catalyst, produces that hydroxyl radical free radical is degraded to pernicious gas and the plasma discharge catalytic district of sterilization.
2, plasma discharge catalytic air purifier as claimed in claim 1 is characterized in that, the electrode that the corona discharge electrode that can produce plasma and load have semiconductor light-catalyst is contained in described plasma discharge catalytic district.
3, plasma discharge catalytic air purifier as claimed in claim 2, it is characterized in that, the catalysis subarea is contained in the plasma discharge catalytic district, the electrode that the corona discharge electrode that is arranged in order and load have semiconductor light-catalyst is contained in this catalysis subarea on the vertical direction of gas circuit, described load has between the electrode of semiconductor light-catalyst parallel with one another, has two adjacent loads between the electrode of semiconductor light-catalyst corona discharge electrode parallel with one another is arranged.
4, plasma discharge catalytic air purifier as claimed in claim 3, it is characterized in that, two or more catalysis subareas of series connection successively on gas circuit are contained in the plasma discharge catalytic district, and stagger in the position of the corona discharge electrode in adjacent catalysis subarea and load electrode that semiconductor light-catalyst is arranged.
As claim 2,3 or 4 described plasma discharge catalytic air purifiers, it is characterized in that 5, described corona discharge electrode is zigzag, star, prickle shape, fishbone, line electrode or pin electrode.
As claim 2,3 or 4 described plasma discharge catalytic air purifiers, it is characterized in that 6, it is net electrode, plate electrode, template electrode, pipe electrode or cellular electrode that described load has the electrode of semiconductor light-catalyst.
7, the described plasma discharge catalytic air purifier of claim 1 is characterized in that, described semiconductor light-catalyst is: TiO
2, ZnO, ZnS, Fe
2O
3, CdS, CdSe or WO
3Particle, or
Be doped with any one or a few the TiO among precious metals pt, Pd, Au, Rh or the Ag
2, ZnO, ZnS, Fe
2O
3, CdS, CdSe or WO
3Particle, or
By TiO
2, ZnO, ZnS, Fe
2O
3, CdS, CdSe or WO
3The composite semiconductor light-catalyst of compound composition between particle, or
By TiO
2, ZnO, ZnS, Fe
2O
3, CdS, CdSe or WO
3In the particle any one or a few and ZnO
2, HgS, PbS,, AgI, SnO
2, SiO
2, ZrO
2Or Al
2O
3In the composite semiconductor light-catalyst of any one or a few compound composition.
8, plasma discharge catalytic air purifier as claimed in claim 1, it is characterized in that, described dedusting area adopts the corona discharge of severe non-uniform electric field to produce plasma, make dust charged, corona discharge electrode is zigzag, star, prickle shape, fishbone, line electrode or pin electrode, and another electrode is plate electrode or template electrode.
9, plasma discharge catalytic air purifier as claimed in claim 1 is characterized in that, described dedusting area adopts dust removal by filtration or absorption dedusting.
10, plasma discharge catalytic air purifier as claimed in claim 1 is characterized in that, described dedusting area is the two-region, and first district is a charging area, and second district is a dust collection section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101142049A CN100404109C (en) | 2005-05-20 | 2005-10-21 | Plasma discharge catalytic air purifier |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510011748 CN1712114A (en) | 2005-05-20 | 2005-05-20 | Plasma discharging and catalyzing air purifier |
| CN200510011748.2 | 2005-05-20 | ||
| CNB2005101142049A CN100404109C (en) | 2005-05-20 | 2005-10-21 | Plasma discharge catalytic air purifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1785485A true CN1785485A (en) | 2006-06-14 |
| CN100404109C CN100404109C (en) | 2008-07-23 |
Family
ID=36783149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101142049A Expired - Fee Related CN100404109C (en) | 2005-05-20 | 2005-10-21 | Plasma discharge catalytic air purifier |
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| Country | Link |
|---|---|
| CN (1) | CN100404109C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927026A (en) * | 2009-06-24 | 2010-12-29 | 上海科林环保工程技术有限公司 | Plasma air cleaning, sterilizing and disinfecting device |
| CN101318127B (en) * | 2007-06-08 | 2011-04-13 | 上海牧而建筑科技有限公司 | Composite titanium dioxide visible light catalyst and preparation method thereof |
| CN103551017A (en) * | 2013-10-22 | 2014-02-05 | 上海海事大学 | Conductive catalytic electrode for direct current corona discharge gas purifier and preparation method thereof |
| CN104645401A (en) * | 2015-01-16 | 2015-05-27 | 德清新明辉电光源有限公司 | Deodorant lamp for refrigerator |
| CN106064417A (en) * | 2016-07-28 | 2016-11-02 | 东南大学 | VOCs removing means in a kind of sheet material |
| CN107149857A (en) * | 2016-03-02 | 2017-09-12 | 北京大学 | Multi-layer planar corona low temperature plasma air cleaning unit |
| CN107360659A (en) * | 2017-07-13 | 2017-11-17 | 珠海格力电器股份有限公司 | A kind of plasma generator and clarifier |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2284105Y (en) * | 1996-11-08 | 1998-06-17 | 蒙里声 | Annular point pulse plasama duster |
| CN2586527Y (en) * | 2002-11-04 | 2003-11-19 | 上海嘉顿环保科技有限公司 | Plasma nanometer catalytic air super purifier |
| KR20040064819A (en) * | 2003-01-10 | 2004-07-21 | 엘지전자 주식회사 | Air cleaner using plasma |
-
2005
- 2005-10-21 CN CNB2005101142049A patent/CN100404109C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101318127B (en) * | 2007-06-08 | 2011-04-13 | 上海牧而建筑科技有限公司 | Composite titanium dioxide visible light catalyst and preparation method thereof |
| CN101927026A (en) * | 2009-06-24 | 2010-12-29 | 上海科林环保工程技术有限公司 | Plasma air cleaning, sterilizing and disinfecting device |
| CN103551017A (en) * | 2013-10-22 | 2014-02-05 | 上海海事大学 | Conductive catalytic electrode for direct current corona discharge gas purifier and preparation method thereof |
| CN104645401A (en) * | 2015-01-16 | 2015-05-27 | 德清新明辉电光源有限公司 | Deodorant lamp for refrigerator |
| CN107149857A (en) * | 2016-03-02 | 2017-09-12 | 北京大学 | Multi-layer planar corona low temperature plasma air cleaning unit |
| CN106064417A (en) * | 2016-07-28 | 2016-11-02 | 东南大学 | VOCs removing means in a kind of sheet material |
| CN107360659A (en) * | 2017-07-13 | 2017-11-17 | 珠海格力电器股份有限公司 | A kind of plasma generator and clarifier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100404109C (en) | 2008-07-23 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20151021 |
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| EXPY | Termination of patent right or utility model |