CN104162348B - Be provided with the plasma purifier of nucleocapsid structure porous ball filter packing - Google Patents
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- CN104162348B CN104162348B CN201310186966.4A CN201310186966A CN104162348B CN 104162348 B CN104162348 B CN 104162348B CN 201310186966 A CN201310186966 A CN 201310186966A CN 104162348 B CN104162348 B CN 104162348B
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Abstract
The invention belongs to low temperature plasma application field, be specifically related to a kind of plasma purifier that is provided with nucleocapsid structure porous ball filter packing. It is characterized in that nucleocapsid structure porous ball is located between plasma discharge electrode, both as filter packing, is again electric discharge target. The porous ball of nucleocapsid structure comprises conductor core, insulation shell and catalyst coat. Insulation shell is loose structure, and surface area is large, tells attached ability strong, be applicable to doing filter packing, and conductor core is easily by electric field polarization, is suitable as target and is applied in gas discharge gap. The present invention divides and has utilized nucleocapsid structure porous ball to have strong adsorption capacity and photo-catalysis capability to pollutant, and the strong capacity of decomposition of plasma to pollutant, both can significantly improve single purification efficiency, can keep again the cleannes on porous ball surface, strong adsorption capacity and photo-catalysis capability the moment, can be widely used in sewage disposal, healthy water production and activated water and produce, and industrial tail gas, vehicle exhaust and indoor air purification.
Description
Technical field
The invention belongs to low temperature plasma application field, be specifically related to a kind of plasma purifier that is provided with nucleocapsid structure porous ball filter packing.
Background technology
Ceramic porous ball, medical stone porous ball and quartzy porous ball etc. have the material of high porosity and high surface, and pollutant is had to very strong adsorption capacity, are widely used in water filtering system as filter packing always. But, adopting at present in the water filtering system of porous ball as filter packing, filter material all, without effective self cleaning method, need to regularly replace new porous ball filter packing. Regular maintenance, not only increases material cost, also increases the maintenance cost of filtration system, and, user is used and brought inconvenience. Once safeguard not in time, not only can not purify water, also may cause the secondary pollution at water source, security is without guarantee, and user's acceptance is not high, has affected the large-scale promotion application of this type of water filtering system. Therefore, porous ball filtration system must arrange instant self-cleaning function, do not allow pollutant be trapped in for a long time porous ball surface, guarantee that on the one hand filtration system can keep cleannes and the strong adsorption capacity on porous ball surface the moment in long-term use, security is secure; Save on the other hand the expense of a large amount of maintenance costs and replacing porous ball filter packing, improved its usage economy of filtration system.
But porous ball itself is passive filter packing, itself do not possess the ability of decomposition or cleaning surface contaminant, only collect and do not process, need consideration and the combination of other active cleaning systems could realize the instant self-cleaning function of system.
In recent years, lower temperature plasma technology is as a kind of emerging pollutant treatment technology, there is the features such as flow process is short, efficiency is high, applied widely, be widely used in the synthetic and activated water field of industrial waste gas processing, dedusting, vehicle exhaust processing, wastewater treatment, ozone. Low temperature plasma body technique is mainly based on atmospheric pressure plasma discharge technology, utilize deep oxidation and the decomposition reaction of pollution sources in ozone, oxygen atom, the free group of hydroxyl isoreactivity and atmosphere or the water that atmosphere pressure discharging produces, reach the object that removes harmful substance in atmosphere or water, follow ultraviolet photolysis, shock wave simultaneously, thereby remove organic matter, killing pathogenic bacteria in atmosphere or water. Utilize various living radicals and ultraviolet strong oxidation and sterilizing effect in plasma, degraded organic contamination source, sedimentation metal ion, killing pathogenic bacteria, pollution sources to life and industrial discharge all have general applicability, volume compact, invest low, be not subject to environmental limitations, be subject to extensive accreditation.
But, current disclosed plasma water treatment facilities and method all exist efficiency on the low side, the problems such as specific energy consumption height, single clean-up effect is far below expection, and reason is to be all based on dielectric barrier discharge, corona discharge, spark discharge or thermal equilibrium plasma for the treatment of the plasma device of sewage at present. On the one hand because air pressure is high, electric discharge can only be in local zonule activated plasma, and, collision frequency is high, free path is short, in plasma, living radical diffusivity is poor, the life-span is short, is not easy to pollution sources haptoreaction in abundant and water, therefore, the utilization rate of living radical is not high, causes treatment effeciency low; Current are fast by discharge gap on the other hand, and pollutant and plasma are too of short duration time of contact, or have part pollutant to have no chance to contact with plasma, just do not left region of discharge by plasma decomposes, and therefore, single clean-up effect is not good. The simple strength of discharge that increases there is no remarkable result to improving single clean-up effect, can further increase on the contrary energy consumption, how to make the pollutant long period be trapped in region of discharge and fully contacts with plasma, is only the effective way that improves single clean-up effect.
Porous ball has strong adsorption capacity to pollutant, plasma has strong capacity of decomposition, the two is in conjunction with having complementarity: the preferential adsorption fouling thing of porous ball, make pollutant can not leave fast region of discharge with current or air-flow, make pollutant and plasma have abundant touch opportunity and resolving time, significantly improve single clean-up effect; The strong capacity of decomposition energy settle accounts immediately of plasma is adsorbed in the pollutant on porous ball surface, makes all contamination-free accumulations in prolonged application of porous ball surface, and the moment keeps surperficial cleannes and strong adsorption capacity.
Porous ball is placed in to region of discharge as filter packing, can ties up discharge space and current or gas channel, for ensuring enough discharge spaces and current or gas channel, must strengthen sparking electrode spacing. But, the spacing relation in direct ratio of discharge voltage and two electrodes, electrode spacing increases, discharge voltage also increases thereupon, and, between electrode, add the more much higher hole of dielectric constant ball, as Ceramic Balls porous ball, medical stone porous ball and quartzy porous ball etc., highfield mainly drops on porous ball, can further improve discharge voltage, and too high discharge voltage can increase plasma generator cost and energy consumption. Need to take measures, both increased interelectrode nominal spacing, obtain enough discharge spaces and current or gas channel, and between electrode, put into the porous ball filler of high-k, do not increase again actual discharge electrode spacing, and, drop on voltage on porous ball account for discharge voltage ratio can't be high.
Summary of the invention
The object of the invention is by nucleocapsid structure porous ball filter packing is filled in the discharge gap between sparking electrode, optimize discharging efficiency and the single purification efficiency of plasma purification device. Nucleocapsid structure porous ball has the architectural feature of metal core, porous media shell and photocatalyst surface, porous surface has high surface area, and, surface has applied nano-crystalline photocatalysis agent layer, further increase surface area, strengthen adsorption ability, nano-crystalline photocatalysis agent can also absorb the ultraviolet light from plasma, auxiliary decomposing pollutant; The metal core of nucleocapsid structure porous ball has good conductance, polarized in electric field, serves as electric discharge target in region of discharge, and actual discharge spacing is reduced into:
L=L0-N*D
Wherein, L is actual discharge spacing, L0For nominal electrode spacing, N is the porous ball number of inserting on sparking electrode line, and D is the diameter of porous ball metal core.
On the one hand nucleocapsid structure porous ball, as the filter packing of region of discharge, has high porosity and high surface area, plays adsorption fouling thing, purifies water or the effect of gas, improves single clean-up effect; On the other hand, porous ball serves as again two groups of targets between sparking electrode, dwindles actual discharge electrode spacing, reduces discharge voltage, improves discharging efficiency.
Described a kind of plasma purifier that is provided with nucleocapsid structure porous ball filter packing, as shown in Figure 1, comprise filter packing 101, ground electrode 102, high-field electrode 103, outer medium tube 104, interior medium tube 105, high voltage source 106, water inlet/gas port 107, water outlet/gas port 108; It is characterized in that being filled with filter packing 101 in the discharge gap between outer medium tube 104 and the interior medium tube 105 of coaxial configuration; In filter packing 101, be provided with nucleocapsid structure porous ball; Nucleocapsid structure porous ball is made up of metal core 201, insulation shell 202 and photocatalytic coating 203, and metal core 201 intimate have been wrapped up the insulation shell 202 of loose structure, and insulation shell 202 surfaces are provided with nano-crystalline photocatalysis agent coating 203; Outer medium tube 104 outer surfaces are provided with ground electrode 102, ground electrode 102 and high voltage source 106 are altogether, in interior medium tube 105, be provided with high-field electrode 103, high-field electrode 103 connects the high-voltage output end of high voltage source 106, outer medium tube 104 1 end openings, are provided with into water/gas port 107, together with the tube wall burn-back of the other end and interior medium tube 105, be provided with water outlet/gas port 108 near interface, the other end of interior medium tube 105 is self-enclosed. Nucleocapsid structure porous ball is arranged in the discharge gap between electrode as filter packing, nucleocapsid structure porous ball has strong adsorption capacity and photo-catalysis capability to pollutant, be combined with the plasma with strong capacity of decomposition, single clean-up effect can be significantly improved, and the cleannes on porous ball surface, strong adsorption capacity and photo-catalysis capability can be kept the moment; Nucleocapsid structure porous ball as the target of discharging structure, can increase discharge gap width simultaneously, obtains large volume plasma, also can significantly not increase discharge voltage, thereby raising discharging efficiency, therefore, has optimized discharging efficiency and the single clean-up effect of plasma purification device.
In discharge gap between outer medium tube 104 and the interior medium tube 105 of described coaxial configuration, be provided with porous ball filter packing, porous ball diameter range is at 3-20mm. Discharge gap width is relevant with clarifier purposes (water purifies or gas purification) to operating air pressure, selects sizeable filter packing according to electric discharge width and clarifier purposes, and the preferential scope of porous ball diameter is at 3-20mm.
Described filter packing 101 is nucleocapsid structure porous balls, or nucleocapsid structure porous ball and one or several fillers that mix with any ratio in medical stone porous ball, ceramic porous ball and quartzy porous ball. Filter packing 101 doubles as the target of electric discharge, therefore, must comprise nucleocapsid structure porous ball, according to the catalysis characteristics of the purposes of clarifier and porous ball, also can mix one or several in medical stone porous ball, ceramic porous ball and quartzy porous ball, to strengthen purification efficiency.
Described nucleocapsid structure porous ball is by metallized metal core 201, porous ceramics insulation shell 202 and TiO2Nano-crystalline photocatalysis agent coating 203 forms, as shown in Figure 2. As electric discharge target metal core except having electric conductivity, can also there is magnetic, for water purify, also may obtain magnetization healthy water.
Described outer medium tube 104 and interior medium tube 105 are coaxial configurations, and its Main Ingredients and Appearance is SiO2Or Al2O3. Medium tube must insulate, and is not easy again out water to be caused to secondary pollution by plasma etching, SiO simultaneously2And Al2O3The inexpensive glass body having good stability or the ceramic body material of commonly using.
Described water outlet/gas port 108 has one or more, is arranged on outer medium tube 104 and interior medium tube 105 and burns near interface. Water inlet/gas port 107 and water outlet/gas port 108 should set up coaxial discharge pipe two ends separately, allow the move distance of water/gas in plasma maximize, strengthen treatment effeciency, because water outlet/gas port 108 diameters intake/gas port 107 is little, be necessary to arrange 1-3 more, increase water/gas and discharge ability.
The outer medium tube 104 of described coaxial configuration is vertical placements with interior medium tube 105. When clarifier is applied to water purification, water need to flow through discharge gap from top to bottom by gravity, and therefore, clarifier needs vertical placement.
Air pressure range in discharge gap between described outer medium tube 104 and interior medium tube 105 is that atmosphere is pressed onto 103Pa. According to the requirement of clarifier purposes article on plasma volume density, temperature and volume, and discharge gap width, the preferably operating air pressure of discharge gap, in the time that plasma purifier is used for water activation processing, discharge gap operating air pressure can be low to moderate 103Pa。
Discharge gap width range between described outer medium tube (104) and interior medium tube (105) is 5-50mm. In discharge gap, insert stuffing material at needs, the width of discharge gap needs suitably to increase width, the selection of cooperating air pressure, and discharge gap width range can regulate between 5-50mm.
Brief description of the drawings
Fig. 1, be provided with the plasma purifier vertical section schematic diagram of nucleocapsid structure porous ball filter packing.
Fig. 2, nucleocapsid structure porous ball tangent plane schematic diagram.
101-filter packing in figure, 102-ground electrode, 103-high-field electrode, the outer medium tube of 104-, medium tube in 105-, 106-high voltage source, 107-water inlet/gas port, 108-water outlet/gas port, 201-metal core, 202-insulation shell, 203-catalyst coat.
Detailed description of the invention
The specific embodiment of the present invention is as shown in Figure 1:
The filter packing of making 101 is applied to as shown in Figure 1 in plasma water/gas body purifier. Electric discharge device agent structure is, coaxial burn-back two quartz ampoules are together respectively as outer medium tube 104 and the interior medium tube 105 of discharging, the outer ground electrode 102 that is provided with of outer medium tube 104, in interior medium tube, be provided with high-field electrode 103, nucleocapsid structure porous ball filter packing 101 is located in the discharge gap between outer medium tube 104 and interior medium tube 105, the High voltage output termination high-field electrode 103 of high voltage source, high voltage source and ground electrode 102 are altogether. Outer medium tube 104 upward openings are water inlet/gas port 107, and bottom side opening is water outlet/gas port 108.
Claims (9)
1. be provided with a plasma purifier for nucleocapsid structure porous ball filter packing, comprise filter packing (101), ground electrode (102), high-field electrode (103), outer medium tube (104), interior medium tube (105), high voltage source (106), water inlet/gas port (107), water outlet/gas port (108); It is characterized in that being filled with filter packing (101) in the discharge gap between outer medium tube (104) and the interior medium tube (105) of coaxial configuration; Filter packing is provided with nucleocapsid structure porous ball in (101); Nucleocapsid structure porous ball is made up of metal core (201), insulation shell (202) and photocatalytic coating (203), metal core (201) intimate has been wrapped up the insulation shell (202) of loose structure, and insulation shell (202) surface is provided with nano-crystalline photocatalysis agent coating (203); Outer medium tube (104) outer surface is provided with ground electrode (102), ground electrode (102) and high voltage source (106) are altogether, in interior medium tube (105), be provided with high-field electrode (103), high-field electrode (103) connects the high-voltage output end of high voltage source (106), outer medium tube (104) one end openings, be provided with into water/gas port (107), together with the tube wall burn-back of the other end and interior medium tube (105), be provided with water outlet/gas port (108) near interface, the other end of interior medium tube (105) is self-enclosed.
2. the plasma purifier that is provided with nucleocapsid structure porous ball filter packing as claimed in claim 1, in discharge gap between outer medium tube (104) and the interior medium tube (105) of the coaxial configuration described in it is characterized in that, be provided with porous ball filter packing, porous ball diameter range is at 3-20mm.
3. the plasma purifier that is provided with nucleocapsid structure porous ball filter packing as claimed in claim 1, it is characterized in that described filter packing (101) is nucleocapsid structure porous ball, or nucleocapsid structure porous ball and one or several fillers that mix with any ratio in medical stone porous ball, ceramic porous ball and quartzy porous ball.
4. the plasma purifier that is provided with nucleocapsid structure porous ball filter packing as claimed in claim 1, is characterized in that described nucleocapsid structure porous ball is made up of metal core (201), porous ceramics insulation shell (202) and TiO2 nano-crystalline photocatalysis agent coating (203).
5. the plasma purifier that is provided with nucleocapsid structure porous ball filter packing as claimed in claim 1, is characterized in that described outer medium tube (104) and interior medium tube (105) are coaxial configurations, and its Main Ingredients and Appearance is SiO2Or Al2O3。
6. the plasma purifier that is provided with nucleocapsid structure porous ball filter packing as claimed in claim 1, is characterized in that described water outlet/gas port (108) has one or more, is arranged on outer medium tube (104) and interior medium tube (105) and burns near interface.
7. the plasma purifier that is provided with nucleocapsid structure porous ball filter packing as claimed in claim 1, is characterized in that the outer medium tube (104) of described coaxial configuration is vertical placement with interior medium tube (105).
8. the plasma purifier that is provided with nucleocapsid structure porous ball filter packing as claimed in claim 1, is characterized in that the air pressure range in the discharge gap between described outer medium tube (104) and interior medium tube (105) is that atmosphere is pressed onto 103Pa。
9. the plasma purifier that is provided with nucleocapsid structure porous ball filter packing as claimed in claim 1, is characterized in that the discharge gap width range between described outer medium tube (104) and interior medium tube (105) is 5-50mm.
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| CN104791052A (en) * | 2015-03-17 | 2015-07-22 | 西安鹏光环保科技有限责任公司 | Plasma automobile exhaust treatment device |
| CN105498529A (en) * | 2016-01-22 | 2016-04-20 | 中科新天地（合肥）环保科技有限公司 | Low-temperature plasma concerted catalysis discharging device for adsorbing and treating organic waste gas |
| CN107309089B (en) * | 2017-07-27 | 2023-06-06 | 重庆科技学院 | Purifying device adopting static electricity to remove impurities |
| CN111495107B (en) * | 2020-04-18 | 2021-07-02 | 嵊州市万睿科技有限公司 | Waste gas adsorption device based on saturated and automatic replacement of filter material |
| WO2022247350A1 (en) * | 2021-05-25 | 2022-12-01 | 珠海格力电器股份有限公司 | Gaseous pollutant removal structure, discharge structure and gas purification device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1807271A (en) * | 2006-01-27 | 2006-07-26 | 哈尔滨工业大学 | Method for removing difficultly degradable organic substance from packed bed in high voltage pulse electric field |
| CN203264538U (en) * | 2013-05-20 | 2013-11-06 | 孙红梅 | Plasma purifier provided with core-shell-structure porous ball filter packing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1807271A (en) * | 2006-01-27 | 2006-07-26 | 哈尔滨工业大学 | Method for removing difficultly degradable organic substance from packed bed in high voltage pulse electric field |
| CN203264538U (en) * | 2013-05-20 | 2013-11-06 | 孙红梅 | Plasma purifier provided with core-shell-structure porous ball filter packing |
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Effective date of registration: 20191122 Address after: 214000 88-518 Huian Road, Liangxi District, Wuxi City, Jiangsu Province Patentee after: Jiangsu Xianjing Plasma Technology Research Institute Co.,Ltd. Address before: 200433 Shanghai city Yangpu District State Road 1450 Lane 15, room 1402 Patentee before: Sun Hongmei |
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Denomination of invention: A plasma purifier equipped with a core-shell structure porous ball filter filler Effective date of registration: 20230329 Granted publication date: 20160518 Pledgee: Bank of Jiangsu Limited by Share Ltd. Wuxi branch Pledgor: Jiangsu Xianjing Plasma Technology Research Institute Co.,Ltd. Registration number: Y2023320000166 |