CN101850214A - Plasma-catalytic oxidation refuse burning and cracking tail gas purification device - Google Patents
Plasma-catalytic oxidation refuse burning and cracking tail gas purification device Download PDFInfo
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- CN101850214A CN101850214A CN200910051019A CN200910051019A CN101850214A CN 101850214 A CN101850214 A CN 101850214A CN 200910051019 A CN200910051019 A CN 200910051019A CN 200910051019 A CN200910051019 A CN 200910051019A CN 101850214 A CN101850214 A CN 101850214A
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- plasma
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Abstract
The invention relates to a plasma-catalytic oxidation refuse burnt and cracked tail gas purification device comprising a set of plasma-catalytic oxidation and purification device arranged in the tail gas discharging position of a refuse burning furnace or a refuse cracking furnace. The plasma-catalytic oxidation and purification device is characterized in that a tank body of the plasma-catalytic oxidation and purification device is connected with an air outlet of the burning furnace or the cracking furnace through a pipeline and a reducer. Harmless tail gas treated by the purification device is discharged after achieving standards; the front stage in the tank body is provided with a discharge toothed plate and a dust connecting plate which form a plasma electric field, and two electrodes of the plasma electric field are connected with a strong-pulse plasma power supply; and the back stage in the tank body is provided with a catalyst assembly, an oxidant assembly and a catalytic oxidation device shell which form a catalytic oxidation device. The tail gas purification device has the obvious effect of purifying the burnt tail gas and fundamentally eliminates secondary pollution generated in the thermal treatment process of house refuses.
Description
Technical field
Patent of the present invention relates to the air contaminant treatment technical field, concrete relates to a kind of poisonous and harmful exhaust gas cleaner that matches with consumer waste incineration or pyrolysis furnace.
Background technology
Along with increasing rapidly of China's economic, the improving constantly of people's personal consumption level, the output of application of city life garbage constantly increases, and brings very big destruction for city and rural environment and threatens human health and existence.
At present, countries in the world are all in the method for studying domestic rubbish disposal:
General landfill method, composting process, burning method, cracking process, the bioanalysis etc. of adopting.Wherein, burning method, cracking process more meet the strategy of sustainable development.Yet, can produce various toxic and harmfuls, especially dioxin and heavy metal etc. in burning or the cracking process and cause irreversible secondary pollution the environment and the mankind.Therefore, application of city life garbage burns or cracking tail gas adopts advanced efficient grade purification techniques, and is significant.
The application of city life garbage burning is identical substantially with the general industrial waste gas purification apparatus with cracking tail gas purification device, but the exhaust gas component that produces in burning or the cracking process is extremely complicated, and the special complex technique of necessary employing could qualified discharge.
Take a broad view of domestic and international consumer waste incineration or the cracking tail gas purification technology generally comprises: dry cleaning method, wet purification method and three kinds of technology of the half dry type method of purification.
1, dry cleaning technology--the cleaning system that-employing dry type aeration tower and sack cleaner or electrostatic precipitator combine.
The dry cleaning device is simple to operate, and construction investment and operating cost are all lower, but dry method dioxin and organic exhaust gas (TVOC) purification efficiency is low, abroad seldom adopts.
2, wet cleaning device purification techniques---adopt lime stone slurry as absorbent, absorb the toxic and harmful in the tail gas.It can effectively remove pollutant, can qualified discharge.
Wet cleaning device technique flow process complexity, one-time investment height, operating cost height, the fouling of ubiquity burn into, obstruction and sewage, waste residue, secondary pollution problems.Except that large-scale domestic garbage burning electricity generation factory, middle-size and small-size burning, pyrolysis furnace generally do not adopt.
3, half dry type purifier purification techniques---between wet type and dry type, it utilizes the spray-drying principle to purify acid waste gas, adds sack cleaner and removes dust.
Half dry type has flow process weak point, simplicity of design, power consumption is low, investment is less, operating cost is low, no waste gas, no waste residue, non-secondary pollution, but exist desulfuration efficiency low, defectives such as difficulty is big are stopped up, are moved in organic waste-gas purification DeGrains such as dioxin, the easy fouling of jet pipe.
The half dry type purification techniques is applicable to medium-sized or above garbage incinerating power plant, and small-sized rubbish burns, cracking tail gas purification and be not suitable for.
Because various purification styles are difficult to be applicable to small-sized rubbish burning disposal factory, so small-sized rubbish burning disposal factory is difficult to use on a large scale.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the drawback and the problem that exist in existing consumer waste incineration or the cracking tail gas purification technology, and a kind of plasma-catalytic oxidation refuse burning and cracking tail gas purification device is provided.
This device is handled under the condition of 10-20 ton house refuse in separate unit day, can realize the specification requirement of qualified discharge in second level period: because this contrive equipment, with plasma and two compound one of new and high technology of catalytic oxidation, demonstrate fully the advance of technology, the continuation of reasonable structure and quality, special structure design makes only 5M of the miniaturization of cleaning equipment volume, tank-volumes
3, floor space is 3M only
2, easy and simple to handle, the non-secondary pollution of this device.
In order to address the above problem technical scheme of the present invention is such:
Plasma-catalytic oxidation refuse burning and cracking tail gas purification device, exhaust emissions place at incinerator or pyrolysis furnace, one cover plasma-catalytic oxidation purifier casing is set, it is characterized in that, plasma-catalytic oxidation purifier casing is connected with incinerator or pyrolysis furnace air outlet with reducer pipe by pipeline; Tail gas after the waste incineration is handled the back qualified discharge through purifier; The box house prime is provided with discharge tooth plate and the collecting plate that forms the plasma electric field, and the two poles of the earth of plasma electric field connect the flash plasma power supply; Level is provided with catalyst assembly, oxidant assembly and the catalytic oxidizing equipment housing that forms catalytic oxidizing equipment behind the box house.
Described flash plasma power supply, pulse rise time＜50uS, pulsewidth＜5uS, power: 500-1000V, high voltage pulse: 15000-30000V, pulse frequency: 35-50KHz.
Described plasma electric field is big spacing discharge, and the discharge plate spacing is 20-50mm, and discharge plate tooth and space width are 20-30mm.
Described catalyst assembly, catalyst wherein sinter graininess according to a certain percentage into by noble metal, metal oxide and binding agent and constitute; Noble metal is one or more of platinum, palladium, rhodium, and metal oxide is one or more of manganese dioxide, silver oxide, iron oxide; Described catalyst is a carrier with the rare earth, floods a certain proportion of liquor potassic permanganate, and synthetic diameter is the pellet type catalyst of 4mm.
Described oxidant assembly, oxidant wherein are that 4-8mm uses pottery (alundum (Al) impregnated with particles liquor potassic permanganate by diameter then, form through oven for drying again.Catalyst and oxidant are mixed use by a certain percentage.
Beneficial effect: exhaust gas cleaner of the present invention, the incineration tail gas good purification, under the condition that have in consumer waste incineration or cracking tail gas that pollutant kind is many, complicated component, concentration is high, can not only satisfy and dispel flue dust, heavy metal and stench peculiar smell, can also realize degradation of organic substances, decompose inorganic waste gases, have more the unique function that the dioxin violent in toxicity is reduced several times of dischargings of national standard.Substantially eliminate the secondary pollution that produces in the domestic garbage was harmlessly treated process, realized the zero-emission of heavy metal and dioxin substantially.
Description of drawings
Describe the present invention in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is the structural representation of plasma-catalytic oxidation refuse burning and cracking tail gas purification device application places of the present invention.
Fig. 2 is a plasma-catalytic oxidation refuse burning and cracking tail gas purification device external structure schematic diagram of the present invention.
Fig. 3 is a plasma-catalytic oxidation refuse burning and cracking tail gas purification device internal structure schematic diagram of the present invention.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Referring to Fig. 1 and Fig. 2
In an incineration treatment of garbage factory, be provided with a small-sized incinerator 1, the exhaust emissions place of incinerator 1 is connected with the casing 3 of a plasma-catalytic oxidation purifier, and the other end of casing 3 also connects the chimney 2 of an exhaust emissions.The exhaust emissions place of incinerator 1 is by guide pipeline connect box 3, and guide pipeline is by horn mouth connect box 3, and the other end of casing 3 also connects chimney 2 by horn mouth.Tail gas after the waste incineration purifies the back discharging through casing.
Referring to Fig. 3
Described flash plasma power supply, pulse rise time＜50uS, pulsewidth＜5uS, power: 500-1000V, high voltage pulse: 15000-30000V, pulse frequency: 35-50KHz
Described plasma electric field is big spacing discharge, and tooth plate is apart from being 20-50mm, and tooth-tooth pitch is 20-30mm.Corona discharge pulse is pulse voltage of stack between two uneven electric fields, because the front and back of pulse voltage are along extremely steep, pulse width is in the extremely short burst length, fierce, high-frequency corona discharge pulse take place around corona, produce the plasma of high concentration.Include a large amount of high energy electrons, ion, excited state molecule and free radical in the plasma, the energy of these active particles is higher than the bond energy of gas molecule, frequent collision takes place in they and dioxin organic matter, dioxin generation scission of link is dissociated and forms the free radical fragment of many short chains.
Described catalytic oxidant assembly, wherein catalyst sinters graininess into by a certain percentage by noble metals such as platinum, palladium, rhodium and metal oxide such as manganese dioxide, silver oxide, iron oxide and active carbon, binding agent etc.Catalyst is a carrier with the rare earth, floods a certain proportion of liquor potassic permanganate, synthesizes at diameter in 4mm graininess catalytic oxidant through scientific technology.The oxidant micropore is many, and adsorptivity is strong, and specific area is about 600-800M
2/ g, oxidisability is strong, can be CO with the stench peculiar smell in the flue gas and other organic pollution redox
2, and H
2O, and the organic substance of the efficient oxidation remnants make it final qualified discharge.Oxidant is then formed through oven for drying by diameter 2-8mm pottery (alundum (Al) impregnated with particles liquor potassic permanganate again, and catalyst and oxidant are mixed by a certain percentage.
Described catalytic oxidizing equipment is inserted the catalytic oxidant of mixing in the catalytic oxidation housing.
Described plasma electric field directly inserts in the purifier casing.
Described catalytic oxidizing equipment directly inserts in the plasma purifier casing.
Exhaust gas cleaner of the present invention, the incineration tail gas good purification, under the condition that have in consumer waste incineration and cracking tail gas that pollutant kind is many, complicated component, concentration is high, can not only satisfy and dispel flue dust, heavy metal and stench peculiar smell, can also realize decomposing organic and inorganic waste gas, have more the unique function that the dioxin violent in toxicity is reduced several times of dischargings of national standard.Substantially eliminate the secondary pollution that produces in the domestic garbage was harmlessly treated process, realized the zero-emission of heavy metal and dioxin substantially.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (5)
1. plasma-catalytic oxidation refuse burning and cracking tail gas purification device, exhaust emissions place at incinerator or pyrolysis furnace, the casing that one cover has the plasma-catalytic oxidation purifier is set, it is characterized in that, plasma-catalytic oxidation purifier casing, be connected with incinerator or pyrolysis furnace air outlet with reducer pipe by pipeline, the tail gas of waste incineration or pyrolysis furnace is handled the back discharging through purifier; The box house prime is provided with discharge tooth plate and the collecting plate that forms the plasma electric field, and the two poles of the earth of plasma electric field connect the flash plasma power supply; Level is provided with catalyst assembly, oxidant assembly and the catalytic oxidizing equipment housing that forms catalytic oxidizing equipment behind the box house.
2. plasma-catalytic oxidation refuse burning and cracking tail gas purification device according to claim 1, it is characterized in that, described flash plasma power supply, pulse rise time＜50uS, pulsewidth＜5uS, power: 500-1000V, high voltage pulse: 15000-30000V, pulse frequency: 35-50KHz.
3. plasma-catalytic oxidation refuse burning and cracking tail gas purification device according to claim 2 is characterized in that, described plasma electric field is big spacing discharge, and discharge tooth plate spacing is 20-50mm, and discharge tooth plate tooth and space width are 20-30mm.
4. plasma-catalytic oxidation refuse burning and cracking tail gas purification device according to claim 1 is characterized in that, the catalyst in the catalyst assembly sinters graininess according to a certain percentage into by noble metal, metal oxide and binding agent and constitutes; Noble metal is one or more of platinum, palladium, rhodium, and metal oxide is one or more of manganese dioxide, silver oxide, iron oxide and active carbon; Described catalyst is a carrier with the rare earth, floods a certain proportion of liquor potassic permanganate, and synthetic diameter is the graininess catalytic oxidant of 4mm.
5. plasma-catalytic oxidation refuse burning and cracking tail gas purification device according to claim 4, it is characterized in that, oxidant in the oxidant assembly is then formed through oven for drying for 4-8mm ceramic particle dipping liquor potassic permanganate by diameter again, and catalyst and oxidant are mixed by a certain percentage.
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| CN2009100510198A CN101850214B (en) | 2009-05-12 | 2009-05-12 | Plasma-catalytic oxidation refuse burning and cracking tail gas purification device |
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| CN2009100510198A CN101850214B (en) | 2009-05-12 | 2009-05-12 | Plasma-catalytic oxidation refuse burning and cracking tail gas purification device |
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| CN101850214A true CN101850214A (en) | 2010-10-06 |
| CN101850214B CN101850214B (en) | 2012-11-21 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102861758A (en) * | 2012-09-26 | 2013-01-09 | 西安建筑科技大学 | Pyrogenic decomposition smoke low-temperature plasma purification equipment and method of household garbage |
| CN104474991A (en) * | 2014-12-18 | 2015-04-01 | 林允杜 | Plasma reaction furnace equipment for waste treatment |
| CN105233641A (en) * | 2015-10-21 | 2016-01-13 | 中国科学院北京综合研究中心 | Deep purifying method and device for dioxin and mercury which are generated in waste incineration |
| CN105854552A (en) * | 2016-06-03 | 2016-08-17 | 上海第升环保科技有限公司 | Device for incinerating dioxin and odor in tail gas |
| CN109631050A (en) * | 2018-12-28 | 2019-04-16 | 山东金艺珠宝有限公司 | A kind of noble metal production garbage combustion device and its operating method |
| CN110935299A (en) * | 2019-12-13 | 2020-03-31 | 河北工业大学 | Method and device for decomposing dioxin in incineration flue gas by coupling catalysis of low-temperature plasma |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4222469C1 (en) * | 1992-07-08 | 1994-01-27 | Gossler Kg Oscar | Method and device for the thermal treatment of gas, in particular thermal and / or catalytic afterburning of exhaust gas |
| US20050118079A1 (en) * | 2003-10-24 | 2005-06-02 | Kunimasa Muroi | Method and apparatus for gas treatment using non-equilibrium plasma |
| CN200945492Y (en) * | 2006-02-12 | 2007-09-12 | 赵龙章 | Burning plasma innocuous waste disposal system |
| CN201154290Y (en) * | 2007-11-21 | 2008-11-26 | 中山大学 | Rotary discharging non-thermal plasma cleaning equipment for waste organic gas |
-
2009
- 2009-05-12 CN CN2009100510198A patent/CN101850214B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102861758A (en) * | 2012-09-26 | 2013-01-09 | 西安建筑科技大学 | Pyrogenic decomposition smoke low-temperature plasma purification equipment and method of household garbage |
| CN104474991A (en) * | 2014-12-18 | 2015-04-01 | 林允杜 | Plasma reaction furnace equipment for waste treatment |
| CN105233641A (en) * | 2015-10-21 | 2016-01-13 | 中国科学院北京综合研究中心 | Deep purifying method and device for dioxin and mercury which are generated in waste incineration |
| CN105854552A (en) * | 2016-06-03 | 2016-08-17 | 上海第升环保科技有限公司 | Device for incinerating dioxin and odor in tail gas |
| CN109631050A (en) * | 2018-12-28 | 2019-04-16 | 山东金艺珠宝有限公司 | A kind of noble metal production garbage combustion device and its operating method |
| CN109631050B (en) * | 2018-12-28 | 2021-03-12 | 山东金艺珠宝有限公司 | Precious metal production garbage incineration device and operation method thereof |
| CN110935299A (en) * | 2019-12-13 | 2020-03-31 | 河北工业大学 | Method and device for decomposing dioxin in incineration flue gas by coupling catalysis of low-temperature plasma |
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| CN101850214B (en) | 2012-11-21 |
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