CN102958264A - Plasma generation device and method based on back corona creeping-surface breakdown of catalyst as well as application thereof - Google Patents
Plasma generation device and method based on back corona creeping-surface breakdown of catalyst as well as application thereof Download PDFInfo
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Abstract
The invention discloses a plasma generation device based on back corona creeping-surface breakdown of a catalyst. The plasma generation device comprises a plasma generator and a high-voltage power supply, wherein high-low-voltage electrode pairs consisting of corona electrodes and porous electrodes are arranged in the plasma generator; a high specific resistance catalyst layer is arranged between the high-low-voltage electrode pairs; and a high-voltage power supply is connected with the high-low-voltage electrode pairs. The invention further discloses a plasma generation method. According to the plasma generation method, basic conditions of a charge accumulated on the catalyst are provided by adopting a high specific resistance catalyst which has low possibility of releasing the charge; the charge generated by corona discharge forms back corona creeping-surface breakdown on the high specific resistance catalyst layer and generates a plasma on the creeping surface of the catalyst, so that the plasma is tightly combined with the catalyst.
Description
Technical field
The invention belongs to plasma generation technique field, be specifically related to a kind of plasma producing apparatus and method based on the anti-corona surface breakdown of catalyst.
Background technology
Plasma is to ionize fully or partial ionization, charge number are bordering on the material aggregation attitude of equal positive and negative charged particle and neutral particle.Plasma can produce active component, causes the physical change and the chemical reaction that are difficult to realize in the conventional chemical reaction.Plasma and catalyst promote the carrying out of catalytic reaction in conjunction with producing synergy.
The low temperature plasma production method has a variety of, such as highfield, laser, microwave, high-energy particle bombardment, heating etc.Corona discharge and dielectric barrier discharge are the most frequently used low temperature plasma production methods.The subject matter of corona discharge is that the energy of the method injecting reactor is lower, and the plasma of generation is very faint, and very inhomogeneous, its highfield, ionization and near luminous existing only in the electrode; And that the subject matter of dielectric barrier discharge is efficiency is low.In the electric precipitation field, in the electric cleaner running a kind of back corona phenomenon that reduces the electric precipitation effect can appear.The mechanism of production of this phenomenon is: electric cleaner is charged to the dust in the air-flow, and charged dust is collected into pole plate under electric field action; When the ratio resistance of dust was higher, the electric charge on the dust was difficult to be discharged on the pole plate, causes charge accumulation, when field intensity reached approximately 10kV/cm between dust layer and the dust collecting pole plate, the dust layer part was breakdown, and the point-like discharge occurs, produce corona light by gas discharge, back corona phenomenon occurs.By the mechanism of production of anti-corona as can be known, anti-corona can produce plasma.When anti-corona occured, corona current increased rapidly, so that discharge power increases, thus, anti-corona can be used for producing high-density plasma.If produce anti-corona at catalyst, plasma and catalyst are combined closely, strengthen the synergy of plasma and catalyst.
At present, the purified treatment of the organic exhaust gas of low concentration, Wind Volume, the technology such as conventional process technology such as absorption, absorption, thermocatalytic and burning exist to some extent that treatment effeciency is low, energy consumption is high and the problem such as operating cost is high.Low Temperature Plasma Treating organic exhaust gas efficient is high, cost is low, is considered to a kind of very promising purification treatment technology.The plasma-catalytic technology is used for organic waste-gas purification and processes existing more research, and its plasma occurring mode mainly adopts dielectric barrier discharge, corona discharge and pulsed discharge, and reactor is divided into one-part form and two-part by structure.The characteristics of one-part form are that catalyst places in the plasma slab, and the combination of plasma and catalyst is better, but have the byproduct emission problem.The characteristics of two-part are after catalyst places plasma slab, only have long-life species could arrive catalytic reaction zone, and the aerosol that leading portion produces can be deposited on catalyst surface, covering active sites, reduction exhaust purification efficiency.The plasma-catalytic technology of open report mainly is based on and produces first plasma at present, remakes for this pattern of catalyst.Because the active particle life-span of plasma generation is extremely short, most active particles are just withered away before arriving catalyst surface, a little less than the interaction of plasma and catalyst.Simultaneously, the generation of active particle needs consumed energy with extinction in the plasma slab, and this has also reduced the energy efficiency of reactor.
Summary of the invention
For the existing above-mentioned technological deficiency of prior art, the invention provides a kind of plasma producing apparatus and method based on the anti-corona surface breakdown of catalyst, can directly produce a large amount of plasmas at catalyst, for both synergies provide favourable condition.
A kind of plasma producing apparatus based on the anti-corona surface breakdown of catalyst comprises plasma generator and high voltage source; Be provided with the high-low pressure electrode pair that is comprised of corona electrode and porous electrode in the described plasma generator, be provided with the high specific resistance catalyst layer between described high-low pressure electrode pair, described high voltage source is connected with the high-low pressure electrode pair.
Described high specific resistance catalyst layer adopts than resistance greater than 1 * 10
7The solid catalyst of Ω cm is such as aluminium oxide etc.; This type of catalyst principal character is that the valence electron of material is not easy free migration, also is not easy conduction under high voltage electric field.
Described corona electrode is point electrode or line electrode, is the electrode of point, pin, line or net such as form.
The supply power mode of described high voltage source adopts direct current supply, Alternating Current Power Supply, pulse power supply, DC stacked Alternating Current Power Supply, dc pulse superposition power supply or exchanges the superimposed pulse power supply.
High voltage source is connected with the high-low pressure electrode pair, and its connected mode can be adjusted according to actual needs, both can be connected with corona electrode, also can be connected with porous electrode, also can be connected with porous electrode with corona electrode simultaneously.The high voltage source power supply both can produce corona discharge at the corona electrode place, can apply high voltage electric field to corona discharging area and catalyst layer again, and the electric charge that orders about the corona discharge generation is charged to the high specific resistance catalyst.
Preferably, be provided with auxiliary electrode between described corona electrode and the high specific resistance catalyst layer, can make Electric Field Distribution more even, suppress corona discharge and develop to sparkover; Described auxiliary electrode is connected with accessory power supply, can provide anti-corona to trigger electric field, promotes the anti-corona surface breakdown of catalyst.Accessory power supply is connected with auxiliary electrode, jointly the high specific resistance catalyst layer is worked with the high voltage source that is connected on the high-low pressure electrode pair, and anti-corona is occured; When accessory power supply adopts interchange or the pulse power, mainly work to trigger anti-corona and occur; When the field intensity of the high voltage source generation that applies on the high-low pressure electrode pair enough made the anti-corona surface breakdown of catalyst occur, accessory power supply can be disconnected; At this moment, auxiliary electrode plays again to distribute electric field as suspension electrode.
Preferably, the catalyst in the described high specific resistance catalyst layer is cellular or pumiceous texture; The catalyst of this class formation can provide more duct and surface area, thereby more electric charge attaching surface is provided, and makes catalyst easier of charged.
Preferably, described auxiliary electrode adopts the electrode of loose structure; Have larger machining area, make Electric Field Distribution more even, the partial discharge point also is provided simultaneously, to the facilitation that plays of corona discharge and catalyst corona.
A kind of plasma method for generation based on the anti-corona surface breakdown of catalyst, as follows:
The high-low pressure electrode pair that structure is comprised of corona electrode and porous electrode, and the high specific resistance catalyst layer is set between the high-low pressure electrode pair;
To the power supply of high-low pressure electrode pair, produce corona discharge at corona electrode by high voltage source; Corona discharging area and high specific resistance catalyst layer are applied high voltage electric field, order about electric charge that corona discharge produces charged and in the catalyst layer accumulation to described catalyst layer, the electric charge of accumulation produces additional electric field at catalyst layer; The stack of described additional electric field and high voltage electric field is so that the field intensity of catalyst layer meets or exceeds catalyst along the disruptive field intensity of face gas, thereby causes the anti-corona surface breakdown of catalyst, so that catalyst is along the face gas discharge, and then produces plasma.
A kind of organic waste-gas purification processing method of using above-mentioned plasma producing apparatus is as follows:
Produce corona discharge by the high voltage source power supply at corona electrode, so that gas is ionized near the corona electrode, thereby produce a large amount of electric charges;
Corona discharging area and high specific resistance catalyst layer are applied high voltage electric field, order about electric charge charged and in catalyst layer accumulation to described catalyst layer, the electric charge of accumulation produces additional electric field at catalyst layer; The stack of additional electric field and high voltage electric field is so that the field intensity of catalyst layer meets or exceeds catalyst along the disruptive field intensity of face gas, thereby causes the anti-corona surface breakdown of catalyst, so that catalyst is along the face gas discharge, and then produces plasma;
Organic exhaust gas is passed into plasma generator, make waste gas first by corona discharging area, the plasma that utilizes corona discharge to produce carries out preliminary treatment to organic exhaust gas; Make pretreated organic exhaust gas by the high specific resistance catalyst layer, organic exhaust gas under the plasma body cooperative effect that catalyst and anti-corona produce by catalytic decomposition to realize purified treatment, at last the gas after the purified treatment is discharged from plasma generator.
The present invention has adopted the high specific resistance catalyst of difficult release electric charge, the primary condition that provides electric charge to accumulate at catalyst; The electric charge that has utilized corona discharge to produce, anti-corona surface breakdown occurs at the high specific resistance catalyst layer, produce plasma at catalyst along face, this not only makes the catalyst outer surface produce plasma, simultaneously produced plasma at hole, duct and corresponding catalyst through catalyst layer along face, so that plasma and catalyst are combined closely.Producing simultaneously plasma by corona discharge and the anti-corona surface breakdown of high specific resistance catalyst among the present invention, is the plasma-catalytic system of one-part form and two-period form of being coupled.Be applied to purification organic waste gas treatment, one section preliminary treatment and two sections intensive treatment can be combined effectively; Corona discharge produces a large amount of active species, organic exhaust gas is carried out preliminary treatment, make an organic gas part be broken down into inorganic matter or be decomposed into small organic molecule, part polymerization in the high activity reaction atmosphere forms aerosol, also produces simultaneously the strong oxidizing property species such as ozone; The high specific resistance catalyst of corona discharge and back segment consists of two-part plasma-catalytic system in general sense, can process organic waste-gas purification, and ozone decomposes generation active oxygen, efficiently decomposing organic matter at catalyst; The anti-corona surface breakdown of high specific resistance catalyst forms the plasma-catalytic reaction zone, directly produce plasma at catalyst, this is one-part form plasma-catalytic system, and be very closely plasma-catalytic system of catalyst and plasma combination, be conducive to improve the purified treatment effect of organic exhaust gas.
Utilize the present invention to process organic exhaust gas, effectively solved aerocolloidal problem in the plasma-catalytic degradation organic waste gas process, the aerosol that the Corona discharge Treatment process produces is electrically charged, so that aerosol more easily is trapped on the catalyst with air-flow during by catalyst layer, because anti-corona is that original position produces on catalyst, and aerosol is decomposed under the synergy of plasma and catalyst.
Description of drawings
Fig. 1 is the structural representation of generating means the first execution mode of the present invention.
Fig. 2 is the structural representation of generating means the second execution mode of the present invention.
Fig. 3 is the structural representation of the third execution mode of generating means of the present invention.
Embodiment
In order more specifically to describe the present invention, below in conjunction with the drawings and the specific embodiments technical scheme of the present invention is elaborated.
As shown in Figure 1, a kind of plasma producing apparatus based on the anti-corona surface breakdown of catalyst, the high-low pressure electrode pair, auxiliary electrode 2, accessory power supply 6 and the high specific resistance catalyst layer 3 that comprise plasma generator 7, high voltage source 5, formed by corona electrode 1 and porous electrode 4; Wherein:
The high-low pressure electrode pair is located in the plasma generator 7, and two electrode spacings are 3cm; High specific resistance catalyst layer 3 is located between the high-low pressure electrode pair; Auxiliary electrode 2 is located between corona electrode 1 and the high specific resistance catalyst layer 3, and with the spacing of corona electrode 1 be 2cm; Accessory power supply 6 one ends link to each other with auxiliary electrode 2, other end ground connection; High voltage source 5 one ends link to each other with corona electrode 1, other end ground connection; Porous electrode 4 ground connection.
Corona electrode 1 adopts the stainless steel wire electrode, and linear diameter is that 1mm, length are 8cm;
High specific resistance catalyst layer 3 adopts cellular aluminium oxide catalyst, and presses close to mutually with porous electrode 4, and its external diameter, thickness and aperture are respectively 10cm, 10mm and 1mm;
Cellular aluminium oxide catalyst adopts boehmite (AlOOH.nH
2O, 0＜n＜1) as alumina precursor, extrusion modling prepares the cellular oxidative alumina supporter, adopts cladding process that manganese dioxide-catalyst is loaded on the carrier again, makes cellular aluminium oxide catalyst.The ratio resistance value that records aluminium oxide catalyst is 1 * 10
8Ω cm.
The foaming nickel screen of load manganese dioxide adopts the infusion process preparation, and the electrode of making is the sintered body of metal and oxide, has good electric conductivity, can be used as auxiliary electrode.
The method that the present embodiment plasma occurs is: connect DC power supply, output voltage is-35kV to occur corona around the corona discharge on the stainless steel wire electrode, stainless steel wire; Auxiliary electrode becomes evenly the field intensity between auxiliary electrode and the stainless (steel) wire electrode electric field redistribution between the high-low pressure electrode, makes to occur local anti-corona on the catalyst layer, the electric discharge phenomena of the visible flicker in catalyst duct; Make pulse power supply, output voltage are-10kV that frequency is 10Hz, catalyst layer is applied additional electric field, make the catalyst layer field intensity surpass the gas breakdown field intensity, after every subpulse output, all occur the anti-corona of large tracts of land in catalyst layer surface, the duct, gas discharge produces plasma.
Adopt oscilloscope to test real-time discharging current, the average current of ammeter electric discharge.When the anti-corona of catalyst occured, oscilloscope can detect very large pulse current.When not adopting the high specific resistance catalyst, only corona occurs at the corona electrode place, do not produce plasma between auxiliary electrode and the stainless (steel) wire electrode.Current density during the anti-corona surface breakdown of corona discharge catalyst is 3 times when not adopting the high specific resistance catalyst, and its plasma generation power is 3 times of the latter as can be known, and plasma generation density significantly improves.
Use the method for present embodiment purification organic waste gas treatment: simulate organic exhaust gas with styrene, under the normal temperature and pressure, concentration of styrene is 100ppm, flow 2L/min; Connect DC power supply and the pulse power, direct current supply voltage-35kV, pulse power supply-10kV (10Hz) produce corona discharge at stainless steel wire electrode place, produce anti-corona at catalyst layer; Organic exhaust gas is passed into plasma generator, make it be introduced into corona discharging area, styrene is pretreated, and part can be broken down into H
2O and CO
2, part can be oxidized to the not exclusively catabolite such as formaldehyde, formic acid, benzoic acid and benzaldehyde, and produces a large amount of aerosols, also produces simultaneously ozone; After the pretreated gas of process entered catalyst layer, aerosol was trapped on the catalyst layer, under the synergy of plasma catalyst, styrene and incomplete catabolite are by catalytic decomposition, ozone is also by catalyst decomposes, the active oxygen that catalytic decomposition of ozone produces, but decomposing organic matter; After tested, through the processing of corona discharge and the anti-corona of catalyst, styrene is removed efficient and is reached 97%.
As shown in Figure 2, a kind of plasma producing apparatus based on the anti-corona surface breakdown of catalyst, the high-low pressure electrode pair, auxiliary electrode 2 and the high specific resistance catalyst layer 3 that comprise plasma generator 8, high voltage source, formed by corona electrode 1 and porous electrode 4; Wherein:
The high-low pressure electrode pair is located in the plasma generator 8, and two electrode spacings are 3cm; High specific resistance catalyst layer 3 is located between the high-low pressure electrode pair; Auxiliary electrode 2 is located between corona electrode 1 and the high specific resistance catalyst layer 3, and with the spacing of corona electrode 1 be 16mm; High voltage source links to each other with corona electrode 1, porous electrode 4 ground connection.
High voltage source adopts DC power supply 5 to form with the pulse power 7 stacks by the coupling circuit 6 that is comprised of electronic components such as diode and electric capacity, and the output of coupling circuit 6 is connected with corona electrode 1 after the stack;
Corona electrode 1 adopts the stainless (steel) wire electrode, and diameter is that 4cm, thickness 1 are mm;
High specific resistance catalyst layer 3 adopts Si-Al molecular sieve catalyst (particle diameter 3mm), and covers on the porous electrode 4, and thickness is 10mm, is 6 * 10 than resistance value
8Ω cm;
The foamed alumina electrode of loaded Ag-MnOx catalyst mixes the Ag-MnOx catalyst for adopting coprecipitation to make Powdered Ag-MnOx catalyst with aluminium colloidal sol, adopt cladding process with on the Ag-MnOx catalyst cupport foamed alumina again; Because foamed alumina catalyst containing metal silver has good electric conductivity, can be used as auxiliary electrode.
The method that the present embodiment plasma occurs is: connect DC power supply and the pulse power, and direct current output-40kV, pulse output-20kV, frequency 1000Hz, corona discharge on the stainless (steel) wire electrode, corona appears in the stainless (steel) wire bottom; Auxiliary electrode is as suspension electrode, with the electric field redistribution between the high-low pressure electrode, make the field intensity between auxiliary electrode and the stainless (steel) wire electrode become even, make the catalyst layer field intensity surpass the gas breakdown field intensity after the pulse power output of stack, all occur the anti-corona of large tracts of land between catalyst surface, space, gas discharge produces plasma.
Use the method for present embodiment purification organic waste gas treatment: simulate organic exhaust gas with styrene, under the normal temperature and pressure, concentration of styrene is 200ppm, flow 500mL/min; Connect DC power supply and the pulse power, direct current output-40kV, pulse output-20kV, frequency 1000Hz produce corona discharge at stainless (steel) wire electrode place, produce anti-corona at catalyst layer; Organic exhaust gas is passed into plasma generator, make it be introduced into corona discharging area, styrene is pretreated, and part can be broken down into H
2O and CO
2, part can be oxidized to the not exclusively catabolite such as formaldehyde, formic acid, benzoic acid and benzaldehyde, and produces a large amount of aerosols, also produces simultaneously ozone; After the pretreated gas of process entered catalyst layer, aerosol was trapped on the catalyst layer, under the synergy of plasma catalyst, styrene and incomplete catabolite are by catalytic decomposition, ozone is also by catalyst decomposes, the active oxygen that catalytic decomposition of ozone produces, but decomposing organic matter; After tested, through the processing of corona discharge and the anti-corona of catalyst, styrene is removed efficient and is reached 99%.
As shown in Figure 3, a kind of plasma producing apparatus based on the anti-corona surface breakdown of catalyst, the high-low pressure electrode pair, auxiliary electrode 2, accessory power supply 6 and the high specific resistance catalyst layer 3 that comprise plasma generator 7, high voltage source 5, formed by corona electrode 1 and porous electrode 4; Wherein:
The high-low pressure electrode pair is located in the plasma generator 7, and two electrode spacings are 3cm; High specific resistance catalyst layer 3 is located between the high-low pressure electrode pair; Auxiliary electrode 2 is located between corona electrode 1 and the high specific resistance catalyst layer 3, and with the spacing of corona electrode 1 be 15mm; High voltage source 5 one ends link to each other with corona electrode 1, and the other end links to each other with porous electrode 4; Accessory power supply 6 one ends link to each other with auxiliary electrode 2, other end ground connection.
Corona electrode 1 adopts the stainless pin electrode, and diameter is 0.5mm; Many stainless pins are evenly distributed on the porous plate (diameter and thickness are respectively 8cm and 5mm), and the tip is in same plane;
High specific resistance catalyst layer 3 adopts cuboid honeycomb-like cordierite catalyst, and bed-plate dimension is long 10cm, and wide 10cm, thickness are 5mm, and the aperture is 1mm;
The honeycomb-like cordierite catalyst is for adopting coprecipitation to make Powdered Co-MnOx catalyst, the Co-MnOx catalyst is mixed with aluminium colloidal sol, wherein (Co+Mn): the Al mass ratio is 1: 4, adopt cladding process that mixed catalyst is loaded on the honeycomb-like cordierite carrier, the ratio resistance value that records catalyst is 3.2 * 10 again
10Ω cm.
The method that the present embodiment plasma occurs is: connect AC power, corona appears in direct current output 30kV around the corona discharge on the stainless pin electrode, stainless pin; Auxiliary electrode becomes evenly the field intensity between auxiliary electrode and the stainless (steel) wire electrode electric field redistribution between the high-low pressure electrode, makes to occur local anti-corona on the catalyst layer, the electric discharge phenomena of the visible flicker in catalyst duct; Make pulse power supply, output voltage are-10kV that frequency is 10Hz, catalyst layer is applied additional high voltage electric field, make the catalyst layer field intensity surpass the gas breakdown field intensity, after every subpulse output, all occur the anti-corona of large tracts of land in catalyst surface, the duct, gas discharge produces plasma.
Use the method for present embodiment purification organic waste gas treatment: with toluene, styrene and formaldehyde mist simulation organic exhaust gas, under the normal temperature and pressure, the concentration of toluene, styrene and formaldehyde is respectively 50ppm, 150ppm and 200ppm, flow 2L/min; Connect AC power and the pulse power, alternating supply voltage 30kV, pulse power supply-10kV (10Hz) produce corona discharge at stainless pin electrode place, produce anti-corona at catalyst layer; Organic exhaust gas is passed into plasma producing apparatus, make it be introduced into corona discharging area, organic gas is pretreated, and part can be broken down into H
2O and CO
2, part can be oxidized to the not exclusively catabolite such as formaldehyde, formic acid, benzoic acid and benzaldehyde, and produces a large amount of aerosols, also produces simultaneously ozone; After the pretreated gas of process entered catalyst layer, aerosol was trapped on the catalyst layer, under the synergy of plasma catalyst, organic gas and incomplete catabolite are by catalytic decomposition, ozone is also by catalyst decomposes, the active oxygen that catalytic decomposition of ozone produces, but decomposing organic matter; After tested, through the processing of corona discharge and the anti-corona of catalyst, the removal efficient of toluene, styrene and formaldehyde is respectively 93%, 97% and 98%.
Claims (7)
1. the plasma producing apparatus based on the anti-corona surface breakdown of catalyst comprises plasma generator and high voltage source; It is characterized in that: be provided with the high-low pressure electrode pair that is comprised of corona electrode and porous electrode in the described plasma generator, be provided with the high specific resistance catalyst layer between described high-low pressure electrode pair, described high voltage source is connected with the high-low pressure electrode pair.
2. plasma producing apparatus according to claim 1 is characterized in that: be provided with auxiliary electrode between described corona electrode and the high specific resistance catalyst layer.
3. plasma producing apparatus according to claim 2, it is characterized in that: described auxiliary electrode is connected with accessory power supply.
4. plasma producing apparatus according to claim 1, it is characterized in that: the catalyst in the described high specific resistance catalyst layer is cellular or pumiceous texture.
5. it is characterized in that according to claim 2 or 3 described plasma producing apparatus: described auxiliary electrode adopts the electrode of loose structure.
6. plasma method for generation based on the anti-corona surface breakdown of catalyst, as follows:
The high-low pressure electrode pair that structure is comprised of corona electrode and porous electrode, and the high specific resistance catalyst layer is set between the high-low pressure electrode pair;
To the power supply of high-low pressure electrode pair, produce corona discharge at corona electrode by high voltage source; Corona discharging area and high specific resistance catalyst layer are applied high voltage electric field, order about electric charge that corona discharge produces charged and in the catalyst layer accumulation to described catalyst layer, the electric charge of accumulation produces additional electric field at catalyst layer; The stack of described additional electric field and high voltage electric field is so that the field intensity of catalyst layer meets or exceeds catalyst along the disruptive field intensity of face gas, thereby causes the anti-corona surface breakdown of catalyst, so that catalyst is along the face gas discharge, and then produces plasma.
7. the organic waste-gas purification processing method of an application such as the described plasma producing apparatus of the arbitrary claim of claim 1 to 4 is as follows:
Produce corona discharge by the high voltage source power supply at corona electrode, so that gas is ionized near the corona electrode, thereby produce a large amount of electric charges;
Corona discharging area and high specific resistance catalyst layer are applied high voltage electric field, order about electric charge charged and in catalyst layer accumulation to described catalyst layer, the electric charge of accumulation produces additional electric field at catalyst layer; The stack of additional electric field and high voltage electric field is so that the field intensity of catalyst layer meets or exceeds catalyst along the disruptive field intensity of face gas, thereby causes the anti-corona surface breakdown of catalyst, so that catalyst is along the face gas discharge, and then produces plasma;
Organic exhaust gas is passed into plasma generator, make waste gas first by corona discharging area, the plasma that utilizes corona discharge to produce carries out preliminary treatment to organic exhaust gas; Make pretreated organic exhaust gas by the high specific resistance catalyst layer, organic exhaust gas under the plasma body cooperative effect that catalyst and anti-corona produce by catalytic decomposition to realize purified treatment, at last the gas after the purified treatment is discharged from plasma generator.
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