CN108465354A - Low-temperature plasma synergistic is catalyzed reaction member and i.e. VOCs processing units and method based on the reaction member - Google Patents

Low-temperature plasma synergistic is catalyzed reaction member and i.e. VOCs processing units and method based on the reaction member Download PDF

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Publication number
CN108465354A
CN108465354A CN201810529135.5A CN201810529135A CN108465354A CN 108465354 A CN108465354 A CN 108465354A CN 201810529135 A CN201810529135 A CN 201810529135A CN 108465354 A CN108465354 A CN 108465354A
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positive
reaction member
low
temperature plasma
negative
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姚水良
吴欣月
陈挚宗
董若羽
沈怡洁
谢涵
廖美芳
沈平
沈一平
张欢欢
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Zhejiang Gongshang University
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Zhejiang Gongshang University
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    • B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
    • B01D53/323—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00 by electrostatic effects or by high-voltage electric fields
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    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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Abstract

The invention discloses a kind of low-temperature plasma synergistics to be catalyzed reaction member, including：The positive electrode plate and negative electrode plate of insulating film are carried, gas via is opened up on positive and negative electrode plate；Between positive and negative electrode plate and with through-hole ceramic honey comb；Corresponding to penetrate through-hole and surface carries several positive and negative needle mountain electrode bars of insulating film layer, positive and negative needle mountain electrode bar is adjacent and interlaced arrangement；Gap between positive and negative needle mountain electrode bar and corresponding through-hole is gas passage and discharge space.Invention additionally discloses a kind of VOCs processing units based on low-temperature plasma synergistic catalytic reactor, particulate matter filter element, low-temperature plasma synergistic catalysis reaction member and ozone decomposed are set gradually along flue gas flow direction be catalyzed reaction member including shell of reactor, in shell of reactor.Exhaust gas containing VOCs enters in device, successively through particulate matter filter element, low-temperature plasma synergistic catalysis reaction member and ozone decomposed catalysis reaction member processing, after purification outside gas exhausting device.

Description

Low-temperature plasma synergistic is catalyzed reaction member and i.e. based on the reaction member VOCs processing units and method
Technical field
The present invention relates to degradation VOCs technical fields, and in particular to a kind of low-temperature plasma synergistic catalytic reactor and That is VOCs processing units and method based on the reactor.
Background technology
Dielectric impedance gas plasma reactor according includes that the media fraction between an electrode pair and the electrode pair is gentle Body portion.When applying certain voltage between electrode pair, (i.e. electric energy is input to gas plasma precursor reactant by additional power source In device), the gas in gas plasma reactor according discharges, and the ingredient in gas is made to ionize.Dielectric impedance gas etc. from Daughter reactor can be used for as vehicle exhaust, flue gas, air, room air, various industrial exhaust gas gas purification, also may be used It is prepared for ozone.Power supply used is AC power, the pulse power or pulsed AC power.
For example, the Chinese invention application documents of Publication No. CN107185401A disclose a kind of equipment absorbing VOCS, Including ultrasonic generator, absorption plant, the ultrasonic generator is connected with receiving apparatus, the absorption plant it is interior in Portion is provided with the worm hole structural material channel of tetrahexahedron, and the bottom and top of the absorption plant are respectively arranged with air inlet And gas outlet, there is blend absorbent at the top and bottom of the worm hole structural material channel.Publication No. CN 105617860A's Chinese invention application documents disclose a kind of VOCs treatment process, specially：VOCs gases after high-efficiency dust remover dedusting are certainly Bottom enters in the reactor equipped with catalyst, enters at the top of hydrogen peroxide autoreactor and sprays on a catalyst, VOCs gases It is discharged from reactor head after stopping 10-15min in reactor, then is discharged after alkaline solution absorption.
Also have currently on the market and handle VOCs gases using low temperature plasma VOCs purifiers, but major part uses The corona discharge reactor or DBD reactors of non-dielectric barrier discharge (DBD), these reactors there are VOCs purification efficiencies it is low and The disadvantage of the generation of nanoparticles by-product etc..
Invention content
The technical problem to be solved in the present invention is to provide a kind of low-temperature plasma synergistics using needle mountain electrode to be catalyzed instead The method for answering device to realize low-temperature plasma synergistic catalytic degradation VOCs, with this method can be with efficient degradation VOCs gas Body, while the concentration that particulate matter in gas is discharged is low, environmental pollution is small.
A kind of low-temperature plasma synergistic catalysis reaction member, including：
The positive electrode plate and negative electrode plate of insulating film are carried, positive and negative electrode plate be separately connected high voltage power supply two are defeated Outlet opens up gas via on positive and negative electrode plate；
Ceramic honey comb between positive and negative electrode plate, the ceramic honey comb are described with being uniformly distributed and being axially perpendicular to The through-hole of electrode plate；
It is corresponding to penetrate the through-hole and several positive needle mountain electrode bars and negative needle mountain electrode bar of the surface with insulating film layer, just The bottom end of needle mountain electrode bar is fixed on positive electrode plate, needle tip is located in corresponding through-hole, and the bottom end of negative needle mountain electrode bar is fixed In on negative electrode plate, needle tip be located in corresponding through-hole, positive needle mountain electrode bar and negative needle mountain electrode bar is adjacent and interlaced arrangement； Gap between positive and negative needle mountain electrode bar and corresponding through-hole is gas passage and discharge space.
The ceramic partition between insulating film layer and the through-hole of ceramic honey comb on adjacent positive and negative electrode stick constitutes three media Barrier discharge reaction module.The low-temperature plasma synergistic catalysis reaction member of the present invention can be used for vehicle exhaust, flue gas, big The removal degradation of VOCs, achievees the purpose that high effect cleaning tail gas in gas, room air and various industrial exhaust gas.
Gas enters discharge space from the air inlet of discharge space, and it is empty that the through-hole on positive and negative electrode plate respectively constitutes electric discharge Between air inlet/outlet, by leaving discharge space from gas outlet after discharge space；Positive and negative electrode plate is exported by high voltage power supply Voltage applies electric fields on the gas of discharge space so that electric discharge phenomena occur for gas；High energy of the VOCs in extra electric field Electronics, which collides, generates excitation state (CnH2n+2) or dehydrogenation generation free radical (CnH2n+1), these excitation state and free radical are again It is reacted with active oxygen [O] (such as oxygen atom, ozone, OH etc.), generates CO and CO2And a small amount of reaction intermediate.
The present invention uses the purification techniques of low-temperature plasma synergistic catalysis oxidation VOCs, and the purification efficiency of VOCs is that nothing is urged 3-5 times when agent, and without the discharge of nanoparticles by-product, illustrate low-temperature plasma synergistic catalysis to clear up VOCs With prodigious application value.
Preferably, the shape of ceramic honey comb is cylinder type, cubic type or ball-type；Through-hole in the ceramic honey comb is circle Shape, triangle, square or hexagon.
Preferably, load has noble metal catalyst and base metal catalysts on the ceramic honey comb；Noble metal catalyst Load capacity is 0.1-1000 micrograms/cm2Through-hole inner surface accumulates；The load capacity of base metal catalysts is 1-10000 micrograms/cm2It is logical Internal surface of hole accumulates.Infusion process preparation can be used.
Noble metal catalyst is gold, platinum, palladium, silver or their mixture；Base metal catalysts include iron, copper, nickel, aluminium, Lead, zinc, tin, tungsten, magnesium, manganese, cerium or their mixture.
Ceramic percent opening is related with can be inserted into the quantity of electrode bar with through-hole diameter, the place of the excessively few then VOCs of electrode bar quantity Effect unobvious are managed, the quantity of electrode bar can excessively lead to the waste of the energy.For a wall thickness, if thickness is excessively thin, medium Easy to be breakdown, voltage is difficult to control；If thickness is blocked up, medium may be caused to be difficult to breakdown, influence the removal effect of VOCs Rate.Preferably, the percent opening of the ceramic honey comb be 20-80%, the partition between through-hole aperture 5-500mm, adjacent through-holes Thickness is 3-50mm.It is further preferred that the percent opening of the ceramic honey comb is 60-80%, through-hole aperture 5-50mm, adjacent logical Wall thickness is 3-10mm between hole.
Further, the growing between 10mm-3000mm of the ceramic honey comb, width between 10-1000mm, height is in 10- Between 3000mm.
High voltage power supply carries energy recovery function, and the voltage waveform of power supply output is pulse or exchange shape, voltage peak 1-100kV is adjustable, and frequency 1-1000Hz is adjustable.
Preferably, the positive needle mountain electrode bar and negative needle mountain electrode bar shape be cylindric cylinder, polygon cylinder or Spherical/concatenated cylinder of ellipse.
Preferably, the positive needle mountain electrode bar and negative needle mountain electrode bar press row interphase distribution, and the positive needle mountain electricity of adjacent column Pole stick and negative needle mountain electrode bar interlaced arrangement.The i.e. one row row of positive needle mountain electrode bar one bear needle mountain electrode bar and further arrange positive needle mountain electrode Stick, and so on.
For insulating film, if insulator film thickness is excessively thin, medium be easy it is breakdown, voltage be difficult to control；If insulating film thickness Thickness is spent, then medium may be caused to be difficult to breakdown, influence the removal efficiency of VOCs.Preferably, the positive needle mountain electrode bar and It is 1-500mm that the length of negative needle mountain electrode bar, which is 10-3000mm, outer diameter,；Positive needle mountain electrode bar and negative needle mountain electrode bar Insulating film layer thickness is 0.1-10mm.It is further preferred that the length of the positive needle mountain electrode bar and negative needle mountain electrode bar is equal It is 10-100mm for 100-500mm, outer diameter；The insulating film layer thickness of positive needle mountain electrode bar and negative needle mountain electrode bar is 0.1-1mm。
The material of needle mountain electrode bar is conductive metal, such as aluminium, iron, stainless steel；The surface of electrode bar is covered with insulating film layer, Such as aluminum oxide film, silicon oxide film, plastic film, ceramic membrane, rubber film, film thickness 0.1-10mm.
Through-hole on ceramic honey comb is uniformly distributed, the axial direction of all through-holes be mutually parallel and with just, pay electrode plate it is perpendicular. Ceramic honey comb surface carries micropore, there is certain adsorption function, is easy breakdown.Needle mountain electrode bar is inserted into ceramic honey comb, is pressed Row alternate positive and negative is arranged, and the positive and negative electrode stick interlaced arrangement of adjacent column.Electrode is the aluminium bar that aluminum oxide film layer is adhered on surface, Three dielectric barrier discharge reaction modules of adjacent electrode stick and pellumina-ceramics partition-pellumina structure composition therebetween. The cardinal principle that dielectric barrier discharge plasma generates decomposition and oxidation to organic molecule is to be generated in discharge process The free radical and ozone O of a large amount of strong oxidizing properties3Etc. high energy active particles, can constantly be collided with VOCs molecules, destroy its chemistry Key, to achieve the purpose that VOCs contaminant degradations.In addition, aluminum oxide film can also reduce the breakdown wind of ceramic honey comb Danger, plays anticreep effect.Catalyst is loaded on ceramic honey comb by infusion process, then passes through dielectric barrier discharge skill Art constitutes plasma body cooperative and is catalyzed reaction member, can effectively degrade VOCs gases.
The present invention also provides a kind of VOCs processing units based on low-temperature plasma synergistic catalytic reactor, including reaction Device shell, the shell of reactor is interior to set gradually particulate matter filter element, low temperature plasma association along flue gas flow direction It is catalyzed reaction member with catalysis reaction member and ozone decomposed.
Particulate matter filter device is installed in its import front end of VOCs processing units, and ozone decomposed catalytic reactor is installed in rear end, To achieve the purpose that the intermediate product of degradation VOCs decomposition, remove ozone to be fully cleaned up gas.
Preferably, wind turbine is set in the shell of reactor and positioned at ozone reaction unit downstream.
The particulate matter filter element is HEPA, electrostatic precipitator or bag filter；Ozone decomposed is catalyzed reaction member For equipped with MnO2, the catalyst such as Pt reaction unit, will not decomposed completely using residual ozone that electric discharge generates is decomposed VOCs is decomposed again.
The present invention also provides a kind of VOCs processing methods based on low-temperature plasma synergistic catalysis reaction, including walk as follows Suddenly：
Exhaust gas containing VOCs enters in device, single through particulate matter filter element, low-temperature plasma synergistic catalysis reaction successively Member and ozone decomposed are catalyzed reaction member, and the degranulation object in particulate matter filter element is anti-in low-temperature plasma synergistic catalysis It answers in unit and converts VOCs to CO2, will using the residual ozone for decomposing electric discharge generation in ozone decomposed catalysis reaction member The VOCs not decomposed completely is decomposed again, outside purified gas discharger.
When the voltage of supply is relatively low, although some gases have some ionization and free diffusion, because content is very little Electric current is too small, and the gas in reaction zone is insufficient to allow plasma reaction occur, and medium can not be breakdown, to be unable to reach Except the effect of VOCs；When the voltage of supply is relatively high, instrument is fragile, to which voltage needs to control in a rational range It is interior.When discharge frequency is too low, the removal efficiency of VOCs is not high；And the excessively high then more waste of energy of discharge frequency, the warp of violation The principle of Ji property.Preferably, voltage peak 1-100kV is adjustable in low-temperature plasma synergistic catalysis reaction member, frequency 1- 1000Hz is adjustable.It is further preferred that voltage peak 1-10kV is adjustable, frequency 1-100Hz is adjustable.It is further preferred that electric Voltage crest value 1-10kV is adjustable, and frequency 30-80Hz is adjustable.
The feed rate of VOCs is too low to cause gas treatment amount in the unit interval too low, then uses the economy of the reaction Benefit is not high；The feed rate of VOCs is excessively high to make residence time of the gas in reactor too short, can not handle completely VOCs gases, i.e. processing are not thorough.Preferably, the feed rate of the exhaust gas containing VOCs is 300-700m3/h。
Compared with prior art, the present invention has the advantages that：
1) plasma body cooperative nanocatalyst technology is used, which can improve the energy of plasma for purification VOCs Amount efficiency reduces VOCs and clears up energy consumption, saves system use cost.According to our achievement in research, there are currently no when catalyst for hair VOCs (benzene) resolution rate about 15% of DBD reactors, but the benzene under same discharge power of the DBD reactors after plus nano catalyst Resolution rate be up to 90% or more.
2) catalyst in electric discharge field can efficiently inhibit the generation of nanoscale aerosol particle object by-product, can VOCs is complete It is complete innoxious.According to our achievement in research, it is dynamic that air is will produce during the plasma abatement of VOCs (alkane and aromatic hydrocarbon) It is strong to atmospheric environment and human body to have no knowledge about these particulate matters in 100nm nanoparticles below at present for mechanics equivalent diameter The influence of health.It, can (concentration be 10 by nanoparticles using the catalyst that we develop7A/cm3) it is reduced to 102A/cm3 Below.
3) plasma generation high-voltage pulse power source has high-efficiency pulse generation technique and Energy Recovery Technology.Utilize this High-voltage pulse power source can save discharged power consumption about 10%-20%, can reduce the use cost of this system.
Description of the drawings
Fig. 1 is the structural schematic diagram of low-temperature plasma synergistic catalysis reaction member of the present invention.
Fig. 2 is the structural schematic diagram of ceramic honey comb of the present invention.
Fig. 3 is positive needle mountain electrode bar distribution schematic diagram on positive electrode plate of the present invention.
Fig. 4 is arrangement schematic diagram of the positive and negative needle mountain of the invention electrode bar in ceramic honey comb.
Fig. 5 is positive needle mountain electrode bar structural schematic diagram of the invention.
Fig. 6 is the schematic cross-section of positive needle mountain electrode bar cylindrical section of the invention.
Fig. 7 is the structural schematic diagram of VOCs processing units of the present invention.
Reference numeral as shown in the figure is as follows：
The gas accesses 1- 2- gas vent 3- particulate matter filter elements
4- low-temperature plasma synergistics are catalyzed reaction member 5- ozone decomposeds and are catalyzed reaction member 6- wind turbines
7- high voltage power supplies
41- positive electrode plate 42- negative electrode plate 43- ceramic honey combs
The positive needle mountain electrode bar 45- of 44- bear needle mountain electrode bar 46- gas vias
431- through-hole 441- electrode interior aluminium bar 442- electrode outer oxide films
Specific implementation mode
As shown in Fig. 1~Fig. 6, a kind of low-temperature plasma synergistic is catalyzed reaction member, including high voltage power supply, positive electrode plate 41, negative electrode plate 42, ceramic honey comb 43, positive needle mountain electrode bar 44 and negative needle mountain electrode bar 45, positive and negative electrode plate carry insulation Film, positive electrode plate connects the cathode output end of high voltage power supply by conducting wire, negative electrode plate connects the negative of negative electrode plate by conducting wire Pole output end.
Positive and negative electrode plate is arranged in parallel, and ceramic honey comb uniformly divides between positive and negative electrode plate in ceramic honey comb The axis of cloth through-hole 431, all through-holes is mutually parallel and perpendicular with positive and negative electrode plate.Positive needle mountain electrode bar bottom end is fixed on On positive electrode plate (as shown in Figure 3), negative needle mountain electrode bar bottom end is fixed on negative electrode plate (attached drawing omits, identical as Fig. 3), just (electrode bar corresponds to one in the corresponding through-hole for penetrating ceramic honey comb of the needle tip of needle mountain electrode bar and negative needle mountain electrode bar Through-hole), positive needle mountain electrode bar and negative needle mountain electrode bar are intervally arranged by row, and the positive needle mountain electrode bar of adjacent column and negative needle mountain electricity Pole stick is staggered (as shown in Figure 4).
The shape of ceramic honey comb is cylinder type, cubic type or ball-type；Through-hole in ceramic honey comb be circle, triangle, Square or hexagon.The growing between 10mm-3000mm of ceramic honey comb, width between 10-1000mm, height is in 10-3000mm Between, the percent opening of ceramic honey comb is 20-80%, between through-hole aperture 5-500mm, adjacent through-holes between wall thickness be 3- 50mm。
The structure of positive and negative needle mountain electrode bar is identical, and one end is tip-like, and needle mountain electrode bar is by electrode interior aluminium bar 441 With electrode outer oxide film 442 (as shown in Figure 5 and Figure 6).Positive and negative needle mountain electrode bar length is that 10-3000mm, outer diameter are 1-500mm；The insulating film layer thickness of positive needle mountain electrode bar and negative needle mountain electrode bar is 0.1-10mm.
Three dielectric barrier discharges of adjacent electrode stick and pellumina-ceramics partition-pellumina structure composition therebetween Reaction module, opens up gas via 46 on positive and negative electrode plate with corresponding needle mountain electrode bar staggered place, needle mountain electrode bar and corresponding logical Gap between hole is discharge space and gas passage, and gas via is respectively the inlet, outlet of gas passage.
As shown in fig. 7, being a kind of VOCs processing units, including shell of reactor, shell of reactor is vertically arranged, and bottom end is Gas feed 1, top are gas vent 2, and reactor enclosure body is interior to set gradually particulate matter filter element 3, low temperature along gas direction Plasma body cooperative is catalyzed reaction member 4, ozone decomposed catalysis reaction member 5 and wind turbine 6, and low-temperature plasma synergistic catalysis is anti- Unit 4 is answered to connect high voltage power supply 7.
Particulate matter filter element is HEPA, electrostatic precipitator or bag filter；Ozone decomposed catalysis reaction member is to take It is loaded with MnO2, the catalyst such as Pt reaction unit, utilize the VOCs that decomposes the residual ozone that electric discharge generates and will not decompose completely It decomposes again.Particulate matter filter element 3 and ozone decomposed catalysis reaction member 5 are the prior art, low temperature plasma association in itself With catalysis reaction member 4 using the reaction member such as Fig. 1~Fig. 6, needle mountain electrode bar is vertically arranged, and positive and negative electrode plate connects respectively Two output ends of high voltage power supply are connect, concrete structure repeats no more.
The gas plasma exoelectrical reaction of the loading salt catalyst of the present invention is illustrated by following two specific embodiments The concrete structure of device and the method used.
Embodiment 1
Power supply is opened, discharges after 3min, so that the gas of VOCs to be removed is flowed through reactor, VOCs can be obtained removal.Place After reason, power supply is closed.
The length of ceramic honey comb is respectively 150mm*100mm*200mm in the present embodiment, and hexagon opposite side is a length of 8mm, wall thickness 2mm, percent opening 69.5%.Load has trace level noble metal catalyst and alkali metal catalysis on ceramic honey comb Agent；Including MnO2、CeO2Deng；
The length of needle mountain electrode is 210mm, and the distance between two electrodes are 8.7mm；The material of needle mountain electrode is aluminium, table Face is covered with aluminum oxide film, film thickness 0.5mm；
Power supply used in low-temperature plasma synergistic catalytic reactor is the power supply of recovering energy source, the electricity of power supply output Corrugating is exchange shape, voltage peak 5kV, frequency 60Hz；
Plasma body cooperative nanocatalyst technology is used, it can be by the VOCs of DBD reactors when no catalyst The DBD reactors that (benzene) resolution rate about 15% is increased to after plus nano catalyst resolution rate of benzene under same discharge power is up to 90% or more, (concentration is 10 for the nanoparticles of generation7A/cm3) it is reduced to 102A/cm3Below.
Embodiment 2
Particulate matter filter element is electrostatic precipitator in the present embodiment；Ozone reactor is equipped with catalysis such as MnO2, Pt The reaction unit of agent；Fan delivery is in 300-700m3Between/h.A length of 500mm, width 500mm, the height of VOCs decomposition apparatus For 800mm.
The length of ceramic honey comb is respectively 150mm*100mm*200mm, a length of 8mm of hexagon opposite side, wall thickness 2mm, percent opening 69.5%.Load has trace level noble metal catalyst and base metal catalysts on ceramic honey comb；Including MnO2、 CeO2Deng.
The length of needle mountain electrode is 210mm, and the distance between two electrodes are 8.7mm；The material of needle mountain electrode is aluminium, table Face is covered with aluminum oxide film, film thickness 0.5mm.
The voltage waveform of the power supply of high-voltage pulse power source recovering energy source, power supply output is exchange shape, voltage peak 5kV, frequency 60Hz.
Exhaust gas containing VOCs enters system from the bottom inlet of system, after electrostatic precipitator removes particulate matter, then via Plasma catalytic reactor processing, most of VOCs are converted into CO2.Exhaust gas is again in postposition catalyst (load MnO2、CeO2Deng) It is middle to be decomposed the VOCs not decomposed completely again using the residual ozone for decomposing electric discharge generation.Last exhaust gas is excluded by wind turbine System outlet.Gas discharge after processing reaches《Discharge standard of air pollutants》The three-level mark of (GB 16297-1996) It is accurate.
The key technical indexes is as follows：
(1) plasma reactor outlet toluene concentration is less than 0.2mg/m3, total VOCs concentration is less than 0.6mg/m3；
(2) maximum processing gas amount：500m3/h；
(3) maximum power consumption：1500W.
The foregoing is merely the specific implementation cases of patent of the present invention, but the technical characteristic of patent of the present invention is not limited to This, any those skilled in the relevant art in the field of the invention, made by changes or modifications all cover the present invention it is special Among sharp range.

Claims (10)

1. a kind of low-temperature plasma synergistic is catalyzed reaction member, which is characterized in that including：
The positive electrode plate and negative electrode plate of insulating film are carried, positive and negative electrode plate is separately connected two output ends of high voltage power supply, Gas via is opened up on positive and negative electrode plate；
Ceramic honey comb between positive and negative electrode plate, the ceramic honey comb carry and are uniformly distributed and are axially perpendicular to the electrode The through-hole of plate；
It is corresponding to penetrate the through-hole and several positive needle mountain electrode bars and negative needle mountain electrode bar of the surface with insulating film layer, positive needle mountain The bottom end of electrode bar is fixed on positive electrode plate, needle tip is located in corresponding through-hole, and the bottom end of negative needle mountain electrode bar is fixed on negative On electrode plate, needle tip be located in corresponding through-hole, positive needle mountain electrode bar and negative needle mountain electrode bar is adjacent and interlaced arrangement；It is positive and negative Gap between needle mountain electrode bar and corresponding through-hole is gas passage and discharge space.
2. low-temperature plasma synergistic is catalyzed reaction member according to claim 1, which is characterized in that on the ceramic honey comb Load has noble metal catalyst and base metal catalysts；The load capacity of noble metal catalyst is 0.1-1000 micrograms/cm2Through-hole Internal surface area；The load capacity of base metal catalysts is 1-10000 micrograms/cm2Through-hole inner surface accumulates.
3. low-temperature plasma synergistic is catalyzed reaction member according to claim 1, which is characterized in that the ceramic honey comb Percent opening is 20-80%, between through-hole aperture 5-500mm, adjacent through-holes between wall thickness be 3-50mm.
4. low-temperature plasma synergistic is catalyzed reaction member according to claim 1, which is characterized in that the positive needle mountain electrode Stick and negative needle mountain electrode bar press row interphase distribution, and the positive needle mountain electrode bar of adjacent column and negative needle mountain electrode bar interlaced arrangement.
5. low-temperature plasma synergistic is catalyzed reaction member according to claim 1, which is characterized in that the positive needle mountain electrode It is 1-500mm that the length of stick and negative needle mountain electrode bar, which is 10-3000mm, outer diameter,；Positive needle mountain electrode bar and negative needle mountain electrode The insulating film layer thickness of stick is 0.1-10mm.
6. a kind of VOCs processing units being catalyzed reaction member based on low-temperature plasma synergistic, including shell of reactor, special Sign is, particulate matter filter element, any one of such as Claims 1 to 5 are set gradually along flue gas flow direction in the shell of reactor Low-temperature plasma synergistic catalysis reaction member and ozone decomposed described in claim are catalyzed reaction member.
7. VOCs processing units according to claim 6, which is characterized in that in the shell of reactor and be located at ozone reaction Wind turbine is arranged in unit downstream.
8. a kind of VOCs processing methods based on low-temperature plasma synergistic catalysis reaction, which is characterized in that include the following steps：
Exhaust gas containing VOCs enters in VOCs processing units, is catalyzed successively through particulate matter filter element, low-temperature plasma synergistic anti- Unit and ozone decomposed is answered to be catalyzed reaction member, the degranulation object in particulate matter filter element is urged in low-temperature plasma synergistic Change in reaction member and converts VOCs to CO2, smelly using the residue that electric discharge generates is decomposed in ozone decomposed catalysis reaction member Oxygen decomposes the VOCs not decomposed completely again, outside purified gas discharger.
9. VOCs processing methods according to claim 8, which is characterized in that low-temperature plasma synergistic is catalyzed in reaction member Voltage peak 1-100kV, frequency 1-1000Hz.
10. VOCs processing methods according to claim 8, which is characterized in that the feed rate of the exhaust gas containing VOCs is 300- 700m3/h。
CN201810529135.5A 2018-05-29 2018-05-29 Low-temperature plasma synergistic is catalyzed reaction member and i.e. VOCs processing units and method based on the reaction member Pending CN108465354A (en)

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