CN103994483A - Method for purifying cooking oil fumes through rare earth catalysis low-temperature plasma technology, and apparatus thereof - Google Patents

Method for purifying cooking oil fumes through rare earth catalysis low-temperature plasma technology, and apparatus thereof Download PDF

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CN103994483A
CN103994483A CN201410156758.4A CN201410156758A CN103994483A CN 103994483 A CN103994483 A CN 103994483A CN 201410156758 A CN201410156758 A CN 201410156758A CN 103994483 A CN103994483 A CN 103994483A
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plasma
plate
oil smoke
corona
coordinated
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CN103994483B (en
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沈拥军
施佳鸣
高丹丹
徐伟
马嘉嶺
潘玉伟
冯云华
韩硕
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Shanghai Kai Hang Tong Li Marine Equipment Co Ltd
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Nantong University
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Abstract

The invention discloses a method for purifying cooking oil fumes through a rare earth catalysis low-temperature plasma technology, and an apparatus thereof. Few cooking oil fumes are dried, the dried cooking oil fumes enter a plasma after generation zone, plasmas generated through atomization discharge enter an adsorption catalysis cooperated plasma purification zone, most cooking oil fumes directly enter the adsorption catalysis cooperated plasma purification zone, fully contact with the plasmas and are purified, and purified oil fumes are discharged to the outside from an oil fume outlet. The apparatus comprises a plate-hole-plate corona atomization discharge plasma generation zone, the adsorption catalysis cooperated plasma purification zone and a shell; and the shell is provided with an upper oil fume inlet, a lower oil fume inlet and the oil fume outlet. The method and the apparatus purify the cooking oil fumes depended on the rare earth catalysis cooperated low temperature plasmas, the highest oil fume removal rate reaches 99.5%, the peculiar smell removal rate reaches 80%, and the concentration of each of pollutants after treatment meets requirements of Discharge Standard of Cooking Fume. A discharge electrode plate and an adsorption filler are not polluted or corroded, so the durability of the performances of the apparatus is guaranteed.

Description

Rare earth catalyst low temperature plasma cooking fume purifying method and device
Technical field
The present invention relates to a kind of lower temperature plasma technology by rare earth catalyst, and the fume purifier of fume of the various pernicious gases in degraded kitchen fume, efficient dispelling abnormal flavor and sterilization.
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 thus the problem of environment aspect.Current, a large amount of oil flue waste gas great majority that produce in cooking process are directly discharged to outdoor by smoke exhaust ventilator and ventilating fan, and the materials such as mist of oil, flue dust adhere on lampblack absorber and ventilating fan, cause cleaning extremely difficult.The more important thing is, unprocessed being discharged in atmosphere of multiple harmful substances in oil smoke, has destroyed air quality situation.Cooking oil fume pollutes and has been listed in one of the three large public hazards in China city at present., there is again gaseous organic substance in the particle (TSP) that had both had suspended state in oil smoke.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 poisonous chemical composition containing in oil smoke has lungs toxicity, immunotoxicity, genetoxic, carcinogenic mutagenicity etc., serious harm health to body.
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 and a kind ofly can efficiently remove tiny oil droplet, can remove gaseous contaminant yet, can overcome oil droplet viscosity, operation steady in a long-term, and can dispelling abnormal flavor, can not produce secondary pollution, be easy to the cooking fume control equipment safeguarded simultaneously.
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 forms of the variety classes of lampblack absorber blast pipe, such as by housing shell tapping of the present invention or wear into matsurface or auxiliary retaining element is installed.The present invention can make oil smoke enter this device by lampblack absorber air stream efflux, makes the oil smoke after purifying drain into outdoor simultaneously.
Rare earth catalyst low temperature plasma cooking fume purifying method, small part kitchen fume enters after drying plasma and produces district, the plasma of atomization discharge generation enters adsoption catalysis coordinated with plasma purifying area, most of kitchen fume directly enters adsoption catalysis coordinated with plasma purifying area, fully contact after-purification with plasma, the oil smoke being 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 that plate-hole-plate corona atomization discharge plasma 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 atomization discharge plasma by upper oil smoke import and produces district, the plasma of atomization discharge generation enters adsoption catalysis coordinated with plasma purifying area, most of kitchen fume directly enters adsoption catalysis coordinated with plasma purifying area from lower oil smoke import, and the oil smoke after purification exports discharge by oil smoke.
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, all drift net is connected in turn, kitchen fume to be evolved is entered between plate-hole-plate corona atomization discharge electrode by equal drift net, described plate-hole-plate corona atomization discharge electrode comprises hardboard electrode, micropore, insulation is dull and stereotyped, grounded plate electrode, hardboard electrode and grounded plate electrode are insulated flat board and separate, described insulation flat board 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.
In the middle of described insulation flat board, be installed with 3 equally spaced micropores, diameter is 0.5mm.
Described insulation flat board is made by pottery.
Described adsoption catalysis coordinated with plasma purifying area comprises detachable draw-off tray, oleophobic barrier plate, porous aggregate, catalyst coat, after entering by lower oil smoke import, most of kitchen fume is attracted in the porous aggregate that contains catalyst coat in surface, the plasma being entered by plate-hole-board-like corona atomization discharge plasma generation district fully contacts with kitchen fume, by the free radical that produces in interparticle collision and dissociation process and the chemical bond rupture that pollutes molecular collision and make contaminant molecule, after degraded poisonous and harmful substance, finally by outside oil smoke outlet discharge chamber, last greasy dirt particle flows into detachable draw-off tray from oleophobic barrier plate under Action of Gravity Field.
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%, 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, corrosion, guaranteed the persistence of device performance.In the present invention, smoke particle is atomized charged droplet capture and is formed larger particle by static coalescence and power condensation, thereby can be collected pole plate and trap smoothly.The low temperature plasma of discharge electrode atomizing corona discharge generation, has certain effect to removing pernicious gas, can remove to a great extent the smell in oil smoke.The mobility that makes to be deposited on the particle on passive electrode surface due to the effect of atomized drop on passive electrode surface strengthens, make it can be automatically dirty along passive electrode, while so just having avoided long-play due to the tack adhesion of the oil smoke blocked up anti-corona causing of oil smoke layer on passive electrode surface, and can reach the effect of clean pole plate, the pole plate that has solved viscosity fume purifying cleans a difficult difficult problem.The present invention, by atomizing corona discharge generation plasma for purification oil flue waste gas, in the electric discharge of discharge electrode atomizing corona, only needs a small amount of water just can keep the clean of pole plate, the service life that can improve 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 of the present invention porch;
Fig. 3 is the power line schematic diagram between plate-hole of the present invention-board-like corona atomization discharge reactor and pole plate;
Fig. 4 is porous plate structure of the present invention;
In figure, screen pack 1, drier 2, flow controller 3, equal drift net 4, hardboard electrode 5, micropore 6, insulation flat board 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.
The specific embodiment
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 after drying plasma and produces district, the plasma of atomization discharge generation enters adsoption catalysis coordinated with plasma purifying area, most of kitchen fume directly enters adsoption catalysis coordinated with plasma purifying area, fully contact after-purification with plasma, the oil smoke being cleaned is discharged to outdoor from oil smoke outlet.The plasma that small part kitchen fume produces is the essential condition of concerted catalysis.
As Fig. 1, shown in Fig. 2, rare earth catalyst low temperature plasma cooker hood of the present invention comprises that plate-hole-plate corona atomization discharge plasma produces district and adsoption catalysis coordinated with plasma purifying area, a small amount of kitchen fume enters plate-hole-plate corona atomization discharge plasma by upper oil smoke import 11 and produces district, the plasma of plasma generator 9 atomization discharge generation enters adsoption catalysis coordinated with plasma purifying area by the passage 20 on porous plate 19, the oil smoke being cleaned is discharged to outdoor by oil smoke outlet 17, 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, equal drift net 4, hardboard electrode 5, micropore 6, insulation flat board 7, grounded plate electrode 8.Kitchen fume enters by the upper oil smoke import 11 of housing 10 of the present invention, screen pack 1 hinders large particulate matter and enters product plasma slab, after drying pipe 2 is dry, by equal drift net 4, entered between plate-hole-plate corona atomization discharge electrode, hardboard electrode 5 is insulated dull and stereotyped 7 with grounded plate electrode 8 and separates, near electric field micropore 6 is very strong, produces heat-flash effect, can realize partial breakdown and form corona discharge pulse near micropore 6.The passage 20 of the plasma producing from porous plate 19 enters adsoption catalysis coordinated with plasma purifying area.
Preferably, in the middle of described insulation flat board, be installed with 3 equally spaced apertures, diameter is 0.5mm.
Preferably, described insulation flat board is made by pottery.
Preferably, described porous plate 19 as shown in Figure 3, is uniformly distributed a large amount of passages 20 and makes the plasma producing can enter evenly, rapidly adsoption catalysis coordinated with plasma purifying area.
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 in micropore 6 places, to form plasma channel.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.Most of kitchen fume enters by the lower oil smoke import 12 of housing 10 of the present invention, is attracted to surface and contains LaCoO 3the aluminum oxide porous filler 15 of catalyst coat 16 in, by plate-hole-board-like corona atomization discharge generation plasma, fully contacted with oil smoke, by free radical and the contaminant molecule producing in interparticle collision and dissociation process, collide the chemical bond rupture that makes contaminant molecule, the object that reaches degraded poisonous and harmful substance, is finally exported outside 17 discharge chambers by oil smoke.Last micro-greasy dirt particle flows into detachable draw-off tray 13 from oleophobic barrier plate 14 under Action of Gravity Field, detachable draw-off tray 13 periodic cleanings.
Preferably, described porous aggregate 15 is aluminium oxide, and active oxidation Lu porous material possesses huge surface area, and adsorption capacity is large, selectively good, be conducive to mist separation.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 3the preferential adsorption fouling thing of porous ball, makes it can not leave fast purifying area with air-flow, and pollutant fully contacts with plasma, and possesses the enough reaction time.Plasma is the clean pollutant that is adsorbed in porous sphere in time, makes the permanent maintenance in porous ball surface clean, and 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 the alumina support of loose structure and be conducive to plasma degradation oil smoke, the catalyst that specific area and pore volume are larger has increased the active particle of reactant and plasma discharge generation in the adsorption of catalyst and the possibility of enrichment, improve the probability of both effective collisions and the possibility of surface reaction, high specific area is also conducive to reactant and product quick adsorption and desorption on 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 the alumina catalyst support with high-specific surface area, can improve its specific area, 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 different defect or the rooms of producing of ionic radius, can improve catalytic activity.
Preferably, plate-hole-board-like corona atomization discharge reactor adopts atomization electric discharge, and the present invention, by atomizing corona discharge generation plasma for purification oil flue waste gas, discharges at discharge electrode atomizing corona, only need a small amount of water just can keep the clean of pole plate, the service life that can improve purifier.
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, have reduced the activation energy of reaction, promote the complete oxidation of pollutant.Lower temperature plasma technology is combined with catalytic process, has improved the selective of the efficiency of process and target product.
Because the living radical life period of plasma and generation thereof is short, plasma generation is not used in the prior art substantially with fume purifying part is separated, this application difficult problem that solves by the following method of the present invention:
(1) rely on filler is shifted out to 3 well format that shortening electrode spacing in plasma generation district adopts to increase the insulation board of voltage and plate-hole-board-like corona atomization discharge reactor, increase region of discharge (be equivalent to 6 needle plate electrode reactors works simultaneously), can greatly improve the generation probability of plasma, to continue to produce active material, enter continuously adsoption catalysis coordinated with plasma purifying area.
(2), by air stream efflux and the two interregional intensive spaces of lampblack absorber self, the plasma that electrion is produced can enter adsoption catalysis coordinated with plasma purifying area fast.
(3) adopt LaCoO 3rare earth catalyst coordinated with plasma technology, can reduce the activation energy reacting, and improves the oxidation effectiveness of plasma to pollutant, and the lifting of unit detergent power is enough to make up the minimizing of its content.
(4) adopt Al 2o 3porous ball sorbing material can increase the active particle of reactant and plasma discharge generation in the adsorption of catalyst and the possibility of enrichment, improve the probability of both effective collisions 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 guaranteed removing to effective of pollutant.
Described rare earth catalyst low temperature plasma cooker hood comprises that plate-hole-plate corona atomization discharge plasma produces district and adsoption catalysis coordinated with plasma purifying area.Fume purifier of fume is divided into two regions, plasma generation is separated with fume purifying part, possesses following advantage: (1), can prevent that oil smoke from sticking to electrode surface in a large number, causes electrode fouling, avoided that oil reservoir is blocked up causes anti-corona simultaneously, played the effect of guard electrode; (2), filler is shifted out to plasma generation district, can shorten interelectrode distance, be convenient to apply higher pulse voltage, improve the probability of plasma generation, discharge voltage increases, and shows good synergy between catalyst and plasma; (3), make the porous aggregate that contains rare earth catalyst coating leave electrion region, can avoid porous aggregate damaged under condition of high voltage, the performance of adsorbent, catalyst can access permanent maintenance simultaneously; (4), intercepting part oil smoke produces the air feed of plasma, can reduce oil smoke pretreatment amount, reduces screen pack, drier, flow controller, equal applied loads of drift net, make it to be convenient to safeguard; (5), the oil smoke at oil smoke blast pipe top is with respect to the oil smoke of lower part, the cleaning of more easily keeping dry under pretreatment measure, this contributes to the operation of plasma system.
Plate-hole-plate corona atomization discharge plasma based on plasma generation and fume purifying part separate design being obtained in the present invention produces district and adsoption catalysis coordinated with plasma purifying area, be enough to overcome the restrictive condition of plasma itself, with and every advantage place of being possessed, cooking fume control equipment before the present invention surpasses for the purification efficiency of oil smoke.
For the enough time of staying that guarantee that in the normal exhaust velocity of moving of lampblack absorber, oil smoke, pollutant is fully purified simultaneously.Condition below by example in detail processing of the present invention.
embodiment 11) the present invention adopts plate-hole-plate corona atomization discharge plasma generation district and adsoption catalysis coordinated with plasma purifying area for basic, adopts atomizing corona discharge mode to produce plasma.
2) regulating power pulse voltage is 10KV, and 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 enters by the upper oil smoke import of housing of the present invention, by screen pack, after drying pipe is dry, by equal drift net, entered between hardboard electrode and grounded plate electrode, near insulation is flat plate microporous, form corona discharge pulse, produce plasma.
6) the dull and stereotyped upper micro-pore diameter of insulation is 0.05mm.
7) passage 20 of plasma from porous plate 19 enters adsoption catalysis coordinated with plasma purifying area.
8) the lower oil smoke import of most kitchen fume by housing of the present invention enters in addition, be attracted in the porous aggregate that contains catalyst coat in surface, by the plasma that plate-hole-board-like corona atomization electric discharge product ion plasma enters, fully contacted Synergistic degradation poisonous and harmful substance with oil smoke.
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 in embodiment 1 (2) into 8KV.
embodiment 3
other conditions are constant, change the pulse voltage 10KV of power supply in the step in embodiment 1 (2) into 12KV.
embodiment 4
Other conditions are constant, by sorbing material Al in step (3) in embodiment 1 2o 3filling rate be 70% to change 60% into.
embodiment 5
Other conditions are constant, by sorbing material Al in step (3) in embodiment 1 2o 3filling rate be 70% to 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% to 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% to 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% to change 21% into.
embodiment 9
Other conditions are constant, by micro-pore diameter on the insulation flat board in step (6) in embodiment 1, are that 0.05mm changes 0.01mm into.
embodiment 10
Other conditions are constant, by micro-pore diameter on the insulation flat board in step (6) in embodiment 1, are that 0.05mm changes 1.0mm into.
By example, confirm the polluter optimum condition in rare earth catalyst low temperature plasma cooker hood of the present invention in kitchen fume: power pulse voltage is 12KV, 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 the oil smoke clearance under this condition is 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 after drying plasma and produces district, the plasma of atomization discharge generation enters adsoption catalysis coordinated with plasma purifying area, most of kitchen fume directly enters adsoption catalysis coordinated with plasma purifying area, fully contact after-purification with plasma, the oil smoke being 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 (LaCoO of porous ball load 3).
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 that plate-hole-plate corona atomization discharge plasma 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 atomization discharge plasma by upper oil smoke import (11) and produces district, the plasma of atomization discharge generation enters adsoption catalysis coordinated with plasma purifying area, most of kitchen fume directly enters adsoption catalysis coordinated with plasma purifying area from lower oil smoke import (12), and the oil smoke after purification exports (17) by oil smoke and discharges.
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), all drift net (4) is connected in turn, kitchen fume to be evolved is entered between plate-hole-plate corona atomization discharge electrode by equal drift net (4), described plate-hole-plate corona atomization discharge electrode comprises hardboard electrode (5), micropore (6), insulation dull and stereotyped (7), grounded plate electrode (8), hardboard electrode (5) is insulated flat board (7) with grounded plate electrode (8) and separates, described insulation dull and stereotyped (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, in the middle of described insulation dull and stereotyped (7), is installed with 3 equally spaced micropores (6), and diameter is 0.5mm.
7. device according to claim 5, is characterized in that, described insulation dull and stereotyped (7) is made by 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), after entering by lower oil smoke import (12), most of kitchen fume is attracted in the porous aggregate (15) that contains catalyst coat (16) in surface, the plasma being entered by plate-hole-board-like corona atomization discharge plasma generation district fully contacts with kitchen fume, by the free radical that produces in interparticle collision and dissociation process and the chemical bond rupture that pollutes molecular collision and make contaminant molecule, after degraded poisonous and harmful substance, finally by outside oil smoke outlet (17) discharge chamber, last greasy dirt particle flows into detachable draw-off tray (13) from oleophobic barrier plate (14) under Action of Gravity Field.
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 (LaCoO 3).
10. device according to claim 8, is characterized in that, described porous aggregate (15) adopts porous spherical structure.
CN201410156758.4A 2014-04-18 2014-04-18 Rare earth catalyst low temperature plasma cooking fume purifying method and device Active CN103994483B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110508110A (en) * 2019-08-23 2019-11-29 厦门理工学院 The effectively ionized concerted catalysis indoor air purification method of rotating electric-discharging original position self-cleaning type

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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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110508110A (en) * 2019-08-23 2019-11-29 厦门理工学院 The effectively ionized concerted catalysis indoor air purification method of rotating electric-discharging original position self-cleaning type

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