CN103994483B - Rare earth catalyst low temperature plasma cooking fume purifying method and device - Google Patents
Rare earth catalyst low temperature plasma cooking fume purifying method and device Download PDFInfo
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- 210000002381 Plasma Anatomy 0.000 title claims abstract description 123
- 239000003517 fume Substances 0.000 title claims abstract description 51
- 239000003054 catalyst Substances 0.000 title claims abstract description 42
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 31
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 29
- 238000010411 cooking Methods 0.000 title claims abstract description 14
- 239000000779 smoke Substances 0.000 claims abstract description 68
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 35
- 238000000889 atomisation Methods 0.000 claims abstract description 31
- 238000004140 cleaning Methods 0.000 claims abstract description 15
- 238000000746 purification Methods 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N al2o3 Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 10
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- 238000011068 load Methods 0.000 claims description 8
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- 231100000614 Poison Toxicity 0.000 claims description 4
- 229910001884 aluminium oxide Inorganic materials 0.000 claims description 3
- 238000010494 dissociation reaction Methods 0.000 claims description 3
- 230000005593 dissociations Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 14
- 231100000719 pollutant Toxicity 0.000 abstract description 14
- 230000037250 Clearance Effects 0.000 abstract description 6
- 230000035512 clearance Effects 0.000 abstract description 6
- 230000035943 smell Effects 0.000 abstract description 4
- 230000002688 persistence Effects 0.000 abstract description 2
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- 239000000463 material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
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- 239000006233 lamp black Substances 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
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- 235000019634 flavors Nutrition 0.000 description 2
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- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- -1 nitrogen containing compound Chemical class 0.000 description 2
- 230000000505 pernicious Effects 0.000 description 2
- 238000006557 surface reaction Methods 0.000 description 2
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- 210000004072 Lung Anatomy 0.000 description 1
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- 125000001931 aliphatic group Chemical group 0.000 description 1
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- 229910001429 cobalt ion Inorganic materials 0.000 description 1
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical group [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 description 1
- 230000002153 concerted Effects 0.000 description 1
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Abstract
The invention discloses a kind of rare earth catalyst low temperature plasma cooking fume purifying method and device.Small part kitchen fume enters plasma after drying and produces district, the plasma that atomization electric discharge produces enters adsoption catalysis coordinated with plasma purifying area, major part kitchen fume directly enters adsoption catalysis coordinated with plasma purifying area, fully contact after-purification with plasma, the oil smoke be cleaned is discharged to outdoor from oil smoke outlet.Device comprises plate-hole-plate corona atomization discharge plasma and produces district, adsoption catalysis coordinated with plasma purifying area, housing; Described housing is provided with oil smoke import, lower oil smoke import, oil smoke outlet.The present invention relies on rare earth catalyst cooperating with low-temperature plasma for purification kitchen fume, and oil smoke clearance is up to 99.5%, and peculiar smell clearance reaches 80%, and pollutant levels all meet " cooking fume discharge standard " requirement after treatment.Be that discharge plate or adsorption stuffing are not vulnerable to pollute, corrode, ensure that the persistence of device performance.
Description
Technical field
The present invention relates to a kind of lower temperature plasma technology by rare earth catalyst, and the various pernicious gases in degraded kitchen fume, efficient dispelling abnormal flavor and sterilization fume purifier of fume.
Background technology
Along with the development of China's economy, the tertiary industry is surging forward, and catering trade also develops rapidly, has also caused the problem of environment aspect thus.Current, a large amount of oil flue waste gas great majority produced in cooking process are typically piped directly to outdoor by smoke exhaust ventilator and ventilating fan, and the material such as mist of oil, flue dust adheres on lampblack absorber and ventilating fan, cause cleaning abnormal difficult.The more important thing is, the multiple harmful substances in oil smoke is unprocessed to be discharged in air, destroys air quality situation.Current cooking oil fume pollutes one of three large public hazards being listed in China city.Both there is the particle (TSP) of suspended state in oil smoke, there is gaseous organic substance again.Pollutant sum can reach kind more than 200, mainly comprises unsaturated hydro carbons, saturated hydrocarbons, aliphatic acid, aldehydes, aromatic series and sulfur-bearing, nitrogen-containing compound and heterocyclic compound etc.Research shows: the multiple toxic chemicals contained in oil smoke has lungs toxicity, immunotoxicity, genetoxic, carcinogenic mutagenicity etc. to body, serious harm health.
Existing cooking fume control equipment is mainly divided into electrostatic precipitation equipment, filter plant, inertial separation equipment, although they have his own strong points, but also all there is the defect of self, such as: energy consumption is high, pollutant removal is limited in scope, easily cause secondary pollution, difficult in maintenance etc.Lack one and efficiently can remove fine oil droplets, also can remove gaseous contaminant, oil droplet viscosity can be overcome simultaneously, operation steady in a long-term, and energy dispelling abnormal flavor, secondary pollution can not be produced, be easy to the cooking fume control equipment of maintenance.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of this invention is to provide rare earth catalyst low temperature plasma cooking fume purifying method and device.This device is installed on lampblack absorber blast pipe place, according to the supporting various fixed form of the variety classes of lampblack absorber blast pipe, such as by inventive shell shell tapping or wear into matsurface or install auxiliary retaining element.The present invention can, by lampblack absorber air stream efflux, make oil smoke enter this device, makes the oil smoke after purification drain into outdoor simultaneously.
Rare earth catalyst low temperature plasma cooking fume purifying method, small part kitchen fume enters plasma after drying and produces district, the plasma that atomization electric discharge produces enters adsoption catalysis coordinated with plasma purifying area, major part kitchen fume directly enters adsoption catalysis coordinated with plasma purifying area, fully contact after-purification with plasma, the oil smoke be cleaned is discharged to outdoor from oil smoke outlet.
Described adsoption catalysis coordinated with plasma purifying area adopts the rare earth catalyst (LaCoO of porous ball load
3).
Described plasma produces district and adopts plate-hole-board-like corona atomization discharge reactor.
Rare earth catalyst low temperature plasma cooker hood, comprises plate-hole-plate corona atomization discharge plasma and produces district, adsoption catalysis coordinated with plasma purifying area, housing; Described housing is provided with oil smoke import, lower oil smoke import, oil smoke outlet, small part kitchen fume enters plate-hole-plate corona by upper oil smoke import and is atomized discharge plasma generation district, the plasma that atomization electric discharge produces enters adsoption catalysis coordinated with plasma purifying area, major part kitchen fume directly enters adsoption catalysis coordinated with plasma purifying area from lower oil smoke import, and the oil smoke after purification is discharged by oil smoke outlet.
Described plate-hole-plate corona atomization discharge plasma produces district and comprises screen pack, drier, flow controller, equal drift net, plate-hole-plate corona atomization discharge electrode, described screen pack, drier, flow controller, equal drift net is connected in turn, kitchen fume to be evolved enters plate-hole-plate corona by equal drift net and is atomized between discharge electrode, described plate-hole-plate corona atomization discharge electrode comprises hardboard electrode, micropore, insulating plate, grounded plate electrode, hardboard electrode and grounded plate electrode are separated by insulating plate, described insulating plate is provided with micropore, the plasma that described plate-hole-plate corona atomization discharge electrode produces enters adsoption catalysis coordinated with plasma purifying area by the passage on porous plate.
Be installed with 3 equally spaced micropores in the middle of described insulating plate, diameter is 0.5mm.
Described insulating plate is made up of pottery.
Described adsoption catalysis coordinated with plasma purifying area comprises detachable draw-off tray, oleophobic barrier plate, porous aggregate, catalyst coat, surface is attracted to containing in the porous aggregate of catalyst coat after major part kitchen fume is entered by lower oil smoke import, fully contacted with kitchen fume by the plasma that plate-hole-board-like corona atomization discharge plasma generation district enters, by the free radical that produces in interparticle collision and dissociation process and the chemical bond rupture polluting molecular collision and make contaminant molecule, after degraded poisonous and harmful substance, finally export outside discharge chamber by oil smoke, remaining greasy dirt particle flows into detachable draw-off tray from oleophobic barrier plate under gravity.
Described porous aggregate is aluminium oxide, and described catalyst coat adopts rare earth based perovskite composite oxides (LaCoO
3).
Described porous aggregate adopts porous spherical structure.
The useful benefit that the present invention has, rely on rare earth catalyst cooperating with low-temperature plasma for purification kitchen fume, oil smoke clearance is up to 99.5%, and peculiar smell clearance reaches 80%, and pollutant levels all meet " cooking fume discharge standard " requirement after treatment.Be that discharge plate or adsorption stuffing are not vulnerable to pollute, corrode, ensure that the persistence of device performance.In the present invention, smoke particle is atomized charged droplet by electrostatic coalescence and power condensation and catches and form larger particle, thus can be collected pole plate and trap smoothly.The low temperature plasma that the electric discharge of discharge electrode atomizing corona produces, has certain effect to removal pernicious gas, can remove the smell in oil smoke to a great extent.On passive electrode surface because the effect of atomized drop makes the mobility of the particle being deposited on passive electrode surface strengthen, make it can be automatically dirty along passive electrode, because the tack adhesion of oil smoke is at the blocked up inverse corona caused of the oil smoke layer on passive electrode surface when doing so avoids long-play, and the effect of clean pole plate can be reached, solve a difficult problem for the pole plate cleaning difficulty of viscosity fume purifying.The present invention produces plasma for purification oil flue waste gas by atomizing corona electric discharge, in the electric discharge of discharge electrode atomizing corona, only needs a small amount of water just can keep the clean of pole plate, can improve the service life of purifier.
Accompanying drawing explanation
Fig. 1 is the structural representation of rare earth catalyst low temperature plasma cooker hood of the present invention;
Fig. 2 is the structural representation of oil smoke porch of the present invention;
Fig. 3 is the power line schematic diagram that plate-hole of the present invention-board-like corona is atomized between discharge reactor and pole plate;
Fig. 4 is porous plate of the present invention structure;
In figure, screen pack 1, drier 2, flow controller 3, all drift net 4, hardboard electrode 5, micropore 6, insulating plate 7, grounded plate electrode 8, plasma generator 9, housing 10, upper oil smoke import 11, lower oil smoke import 12, detachable draw-off tray 13, oleophobic barrier plate 14, porous aggregate 15, catalyst coat 16, oil smoke outlet 17, power line 18, porous plate 19, passage 20.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described further.
Rare earth catalyst low temperature plasma cooking fume purifying method, small part kitchen fume enters plasma after drying and produces district, the plasma that atomization electric discharge produces enters adsoption catalysis coordinated with plasma purifying area, major part kitchen fume directly enters adsoption catalysis coordinated with plasma purifying area, fully contact after-purification with plasma, the oil smoke be cleaned is discharged to outdoor from oil smoke outlet.The plasma that small part kitchen fume produces is the necessary requirement of concerted catalysis.
As Fig. 1, shown in Fig. 2, rare earth catalyst low temperature plasma cooker hood of the present invention comprises plate-hole-plate corona atomization discharge plasma and produces district and adsoption catalysis coordinated with plasma purifying area, a small amount of kitchen fume enters plate-hole-plate corona by upper oil smoke import 11 and is atomized discharge plasma generation district, the plasma that plasma generator 9 is atomized electric discharge generation enters adsoption catalysis coordinated with plasma purifying area by the passage 20 on porous plate 19, the oil smoke be cleaned exports 17 by oil smoke and is discharged to outdoor, trace greasy dirt particle flows into detachable draw-off tray 13 from oleophobic barrier plate 14.
Described plate-hole-plate corona atomization discharge plasma produces district and comprises screen pack 1, drier 2, flow controller 3, all drift net 4, hardboard electrode 5, micropore 6, insulating plate 7, grounded plate electrode 8.Kitchen fume is entered by the upper oil smoke import 11 of inventive shell 10, screen pack 1 hinders large particulate matter to enter product plasma slab, after drying pipe 2 drying, entering plate-hole-plate corona by equal drift net 4 is atomized between discharge electrode, hardboard electrode 5 and grounded plate electrode 8 are separated by insulating plate 7, electric field near micropore 6 is very strong, produces heat-flash effect, can realize partial breakdown and form corona discharge pulse near micropore 6.The plasma produced enters adsoption catalysis coordinated with plasma purifying area from the passage 20 porous plate 19.
Preferably, be installed with 3 equally spaced apertures in the middle of described insulating plate, diameter is 0.5mm.
Preferably, described insulating plate is made up of pottery.
Preferably, described porous plate 19 as shown in Figure 3, is uniformly distributed a large amount of passage 20 and enables the plasma of generation enter adsoption catalysis coordinated with plasma purifying area evenly, rapidly.
As shown in Figure 4, the insulation board of plate-hole-board-like corona atomization discharge reactor has 3 micropores 6, and the power line 18 of its plate electrode distributes as shown in Figure 4, and near micropore 6, electric-field intensity increases, and is more easily discharged, to form plasma channel in micropore 6 place.The present invention, for increasing region of discharge, adopts 3 well format, is equivalent to 6 needle plate electrode reactors and works simultaneously.
Described adsoption catalysis coordinated with plasma purifying area comprises detachable draw-off tray 13, oleophobic barrier plate 14, porous aggregate 15, catalyst coat 16.Major part kitchen fume is entered by the lower oil smoke import 12 of inventive shell 10, is attracted to surface containing LaCoO
3catalyst coat 16 aluminum oxide porous filler 15 in, be atomized electric discharge generation plasma by plate-hole-board-like corona fully to contact with oil smoke, the chemical bond rupture making contaminant molecule is collided by the free radical that produces in interparticle collision and dissociation process and contaminant molecule, reach the object of degraded poisonous and harmful substance, finally exported outside 17 discharge chambers by oil smoke.Remaining micro-greasy dirt particle flows into detachable draw-off tray 13 from oleophobic barrier plate 14 under gravity, the periodic cleaning of detachable draw-off tray 13.
Preferably, described porous aggregate 15 is aluminium oxide, and active oxidation Lu porous material possesses huge surface area, and adsorption capacity is large, selective good, be conducive to mist and be separated.And there is enough mechanical strengths, heat endurance and chemical stability, simultaneously less expensive.Porous ball has strong suction-operated to pollutants from cooking fume, and plasma has very strong capacity of decomposition, and the two complementarity is good, Al
2o
3porous ball Preferential adsorption pollutant, make it can not leave purifying area fast with air-flow, pollutant fully contacts with plasma, and possesses the enough reaction time.Plasma is the clean pollutant being adsorbed in porous sphere in time, and make porous ball surface permanent keep clean, contamination-free is piled up, and has lasting adsorption capacity.
Preferably, described porous aggregate 15 adopts porous spherical structure, rare earth catalyst (LaCoO
3) be carried on loose structure alumina support on be conducive to plasma degradation oil smoke, specific area and the larger catalyst of pore volume add the adsorption of active particle at catalyst and the possibility of enrichment that reactant and plasma discharge produce, the probability of both raisings effective collision and the possibility of surface reaction, high specific area is also conducive to reactant and product quick adsorption and desorption on a catalyst simultaneously.
Preferably, described catalyst coat 16 adopts rare earth based perovskite composite oxides (LaCoO
3), by by rare earth based perovskite composite oxides (LaCoO
3) be carried on and have on the alumina catalyst support of high-specific surface area, its specific area can be improved, and then promote catalytic effect, mix La simultaneously and suppress the migration of Al in perovskite crystalline lattice.
Rare earth based perovskite composite oxides (LaCoO
3) as catalyst coat, there is good heat endurance and oxidation activity, by part, miserable assorted or substituting cobalt ion or oxonium ion, make ionic radius difference produce defect or room, can improve catalytic activity.
Preferably, plate-hole-board-like corona atomization discharge reactor adopts atomization electric discharge, and the present invention produces plasma for purification oil flue waste gas by atomizing corona electric discharge, discharges at discharge electrode atomizing corona, only need a small amount of water just can keep the clean of pole plate, the service life of purifier can be improved.
Preferably, described catalyzing cooperation plasma technique, a large amount of high activity species that corona discharge produces have caused the catalyst on sorbing material surface, reduce the activation energy of reaction, promote the complete oxidation of pollutant.Lower temperature plasma technology is combined with catalytic process, improves the efficiency of process and the selective of target product.
Because the living radical life period of plasma and generation thereof is short, plasma produces to be separated with fume purifying part and is not substantially used in the prior art, of the present inventionly solves this application difficult problem by the following method:
(1) rely on and filler is shifted out plasma generation district's shortening electrode spacing to increase 3 well format of the insulation board employing of voltage and plate-hole-board-like corona atomization discharge reactor, increase region of discharge (being equivalent to 6 needle plate electrode reactors simultaneously work), greatly can improve the generation probability of plasma, to continue producing active material entering adsoption catalysis coordinated with plasma purifying area continuously.
(2) by air stream efflux and the two interregional concentrated voids of lampblack absorber self, the plasma that electrion is produced enters adsoption catalysis coordinated with plasma purifying area fast.
(3) LaCoO is adopted
3rare earth catalyst coordinated with plasma technology, can be reduced the activation energy of reaction, and improve plasma to the oxidation effectiveness of pollutant, the lifting of unit detergent power is enough to the minimizing making up its content.
(4) Al is adopted
2o
3porous ball sorbing material can increase the adsorption of active particle at catalyst and the possibility of enrichment of reactant and plasma discharge generation, the probability of both raisings effective collision and the possibility of surface reaction, simultaneously, the time of staying of pollutant in proper extension oil smoke, and plasma can continue to produce, also ensure that removing to effective of pollutant.
Described rare earth catalyst low temperature plasma cooker hood comprises plate-hole-plate corona atomization discharge plasma and produces district and adsoption catalysis coordinated with plasma purifying area.Fume purifier of fume is divided into two regions, plasma produces and is separated with fume purifying part, possesses following advantage: (1), can prevent oil smoke from sticking to electrode surface in a large number, causes electrode fouling, avoid that oil reservoir is blocked up causes inverse corona simultaneously, play the effect of guard electrode; (2), by filler shift out plasma and produce district, can shorten interelectrode distance, be convenient to apply higher pulse voltage, improve the probability that plasma produces, discharge voltage increases, and shows good synergy between catalyst and plasma; (3), make the porous aggregate containing rare earth catalyst coating leave electrion region, porous aggregate can be avoided damaged under elevated pressure conditions, the performance of adsorbent, catalyst can be kept for a long time simultaneously; (4), intercept the air feed that part oil smoke produces plasma, oil smoke pretreatment amount can be reduced, reduce the applied load of screen pack, drier, flow controller, all drift net, make it to be convenient to safeguard; (5), the oil smoke at oil smoke blast pipe top relative to the oil smoke of lower part, easier cleaning of keeping dry under pretreatment measure, this contributes to the operation of plasma system.
District and adsoption catalysis coordinated with plasma purifying area is produced based on plate-hole-plate corona that plasma produces and fume purifying part separate design obtains being atomized discharge plasma in the present invention, be enough to the restrictive condition overcoming plasma itself, and its every advantage place possessed, cooking fume control equipment before the present invention exceedes for the purification efficiency of oil smoke.
In order to the enough time of staying ensureing that in exhaust velocity that lampblack absorber normally runs, oil smoke, pollutant is fully purified simultaneously.Below by the condition of example in detail process of the present invention.
embodiment 11) the present invention adopts based on plate-hole-plate corona atomization discharge plasma generation district and adsoption catalysis coordinated with plasma purifying area, adopts atomizing corona discharge mode to produce plasma.
2) regulate power pulse voltage to be 10KV, discharge frequency is 50Hz.
3) sorbing material Al in adsoption catalysis coordinated with plasma purifying area
2o
3filling rate be 70%.
4) sorbing material Al
2o
3catalyst coat---rare earth based perovskite composite oxides (LaCoO
3) load capacity is 15%.
5) a small amount of kitchen fume is entered by the upper oil smoke import of inventive shell, by screen pack, after the drying of drying pipe, enter between hardboard electrode and grounded plate electrode by equal drift net, near insulating plate micropore, form corona discharge pulse, produce plasma.
6) on insulating plate, micro-pore diameter is 0.05mm.
7) plasma enters adsoption catalysis coordinated with plasma purifying area from the passage 20 porous plate 19.
8) most kitchen fume is entered by the lower oil smoke import of inventive shell in addition, be attracted to surface containing in the porous aggregate of catalyst coat, fully contacted with oil smoke by the plasma that plate-hole-board-like corona atomization electric discharge product ion plasma enters, Synergistic degradation poisonous and harmful substance.
9) from oil smoke outlet sampling, measure oil smoke discharge concentration, calculate fume purifying efficiency, and analyze each pollutant component content.
embodiment 2
Other conditions are constant, change the pulse voltage 10KV of power supply in the step (2) in embodiment 1 into 8KV.
embodiment 3
Other conditions are constant, change the pulse voltage 10KV of power supply in the step (2) in embodiment 1 into 12KV.
embodiment 4
Other conditions are constant, by sorbing material Al in step (3) in embodiment 1
2o
3filling rate be 70% change 60% into.
embodiment 5
Other conditions are constant, by sorbing material Al in step (3) in embodiment 1
2o
3filling rate be 70% change 80% into.
embodiment 6
Other conditions are constant, by the rare earth based perovskite composite oxides (LaCoO in step (4) in embodiment 1
3) load capacity is 15% change 12% into.
embodiment 7
Other conditions are constant, by the rare earth based perovskite composite oxides (LaCoO in step (4) in embodiment 1
3) load capacity is 15% change 18% into.
embodiment 8
Other conditions are constant, by the rare earth based perovskite composite oxides (LaCoO in step (4) in embodiment 1
3) load capacity is 15% change 21% into.
embodiment 9
Other conditions are constant, are that 0.05mm changes 0.01mm into by micro-pore diameter on the insulating plate in step (6) in embodiment 1.
embodiment 10
Other conditions are constant, are that 0.05mm changes 1.0mm into by micro-pore diameter on the insulating plate in step (6) in embodiment 1.
The polluter optimum condition in rare earth catalyst low temperature plasma cooker hood of the present invention in kitchen fume is confirmed: power pulse voltage is 12KV by example, discharge frequency is 50Hz, sorbing material Al in adsoption catalysis coordinated with plasma purifying area
2o
3filling rate be 70%, rare earth based perovskite composite oxides (LaCoO
3) load capacity is 15%, on the insulation board of plate-hole-board-like corona atomization discharge reactor, micro-pore diameter is 0.05mm, and oil smoke clearance is under this condition up to 99.5%, and peculiar smell clearance reaches 80%.
Claims (10)
1. a rare earth catalyst low temperature plasma cooking fume purifying method, it is characterized in that, small part kitchen fume enters plasma after drying and produces district, the plasma that atomization electric discharge produces enters adsoption catalysis coordinated with plasma purifying area, major part kitchen fume directly enters adsoption catalysis coordinated with plasma purifying area, fully contact after-purification with plasma, the oil smoke be cleaned is discharged to outdoor from oil smoke outlet.
2. method according to claim 1, is characterized in that, described adsoption catalysis coordinated with plasma purifying area adopts the rare earth catalyst of porous ball load.
3. method according to claim 1, is characterized in that, described plasma produces district and adopts plate-hole-board-like corona atomization discharge reactor.
4. a rare earth catalyst low temperature plasma cooker hood, is characterized in that, it comprises plate-hole-plate corona atomization discharge plasma and produces district, adsoption catalysis coordinated with plasma purifying area, housing (10); Described housing (10) is provided with oil smoke import (11), lower oil smoke import (12), oil smoke outlet (17), small part kitchen fume enters plate-hole-plate corona by upper oil smoke import (11) and is atomized discharge plasma generation district, the plasma that atomization electric discharge produces enters adsoption catalysis coordinated with plasma purifying area, major part kitchen fume directly enters adsoption catalysis coordinated with plasma purifying area from lower oil smoke import (12), and the oil smoke after purification is discharged by oil smoke outlet (17).
5. device according to claim 4, it is characterized in that, described plate-hole-plate corona atomization discharge plasma produces district and comprises screen pack (1), drier (2), flow controller (3), equal drift net (4), plate-hole-plate corona atomization discharge electrode, described screen pack (1), drier (2), flow controller (3), equal drift net (4) is connected in turn, kitchen fume to be clean enters plate-hole-plate corona by equal drift net (4) and is atomized between discharge electrode, described plate-hole-plate corona atomization discharge electrode comprises hardboard electrode (5), micropore (6), insulating plate (7), grounded plate electrode (8), hardboard electrode (5) and grounded plate electrode (8) are separated by insulating plate (7), described insulating plate (7) is provided with micropore (6), the plasma that described plate-hole-plate corona atomization discharge electrode produces enters adsoption catalysis coordinated with plasma purifying area by the passage (20) on porous plate (19).
6. device according to claim 5, is characterized in that, be installed with 3 equally spaced micropores (6) in the middle of described insulating plate (7), diameter is 0.5mm.
7. device according to claim 5, is characterized in that, described insulating plate (7) is made up of pottery.
8. device according to claim 5, it is characterized in that, described adsoption catalysis coordinated with plasma purifying area comprises detachable draw-off tray (13), oleophobic barrier plate (14), porous aggregate (15), catalyst coat (16), surface is attracted to containing in the porous aggregate (15) of catalyst coat (16) after major part kitchen fume is entered by lower oil smoke import (12), fully contacted with kitchen fume by the plasma that plate-hole-board-like corona atomization discharge plasma generation district enters, by the free radical that produces in interparticle collision and dissociation process and the chemical bond rupture polluting molecular collision and make contaminant molecule, after degraded poisonous and harmful substance, finally export outside (17) discharge chamber by oil smoke, remaining greasy dirt particle flows into detachable draw-off tray (13) from oleophobic barrier plate (14) under gravity.
9. device according to claim 8, is characterized in that, described porous aggregate (15) is aluminium oxide, and described catalyst coat (16) adopts rare earth based perovskite composite oxides.
10. device according to claim 8, is characterized in that, described porous aggregate (15) adopts porous spherical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN101234284A (en) * | 2007-11-09 | 2008-08-06 | 北京工业大学 | Atomizing corona plasma flue gas purifying equipment |
| CN101653683A (en) * | 2009-09-11 | 2010-02-24 | 陈明功 | Oil and smoke purifier of low-temperature plasma synergistic modified filtering membrane |
| DE102011082925A1 (en) * | 2011-09-19 | 2013-03-21 | BSH Bosch und Siemens Hausgeräte GmbH | Fume extraction device for removing and cleaning cooking fume in kitchen, has control unit which influences operating state of plasma source, and determination unit determines flow condition of extraction device |
| CN204063192U (en) * | 2014-04-18 | 2014-12-31 | 南通大学 | Rare earth catalyst low temperature plasma cooker hood |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101234284A (en) * | 2007-11-09 | 2008-08-06 | 北京工业大学 | Atomizing corona plasma flue gas purifying equipment |
| CN101653683A (en) * | 2009-09-11 | 2010-02-24 | 陈明功 | Oil and smoke purifier of low-temperature plasma synergistic modified filtering membrane |
| DE102011082925A1 (en) * | 2011-09-19 | 2013-03-21 | BSH Bosch und Siemens Hausgeräte GmbH | Fume extraction device for removing and cleaning cooking fume in kitchen, has control unit which influences operating state of plasma source, and determination unit determines flow condition of extraction device |
| CN204063192U (en) * | 2014-04-18 | 2014-12-31 | 南通大学 | Rare earth catalyst low temperature plasma cooker hood |
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Effective date of registration: 20190709 Address after: 2000 No. 389 Gaodong Second Road, Pudong New Area, Shanghai Patentee after: Shanghai Kai hang Tong Li Marine Equipment Co., Ltd. Address before: No. 9, Nantong City, Jiangsu, Jiangsu Patentee before: Nantong University |