CN205760609U - A kind of device for low-temperature plasma synergistic catalysis treatment organic exhaust gas - Google Patents

A kind of device for low-temperature plasma synergistic catalysis treatment organic exhaust gas Download PDF

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Publication number
CN205760609U
CN205760609U CN201620065657.0U CN201620065657U CN205760609U CN 205760609 U CN205760609 U CN 205760609U CN 201620065657 U CN201620065657 U CN 201620065657U CN 205760609 U CN205760609 U CN 205760609U
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low
temperature plasma
exhaust gas
plasma synergistic
organic exhaust
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CN201620065657.0U
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钱黎明
倪国华
冮殿亮
吴金莲
赵海燕
高志斌
刘大雪
李超
许福海
马金强
陆晓飞
郑瓛
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Zhongke Xintiandi (hefei) Environmental Protection Technology Co Ltd
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Zhongke Xintiandi (hefei) Environmental Protection Technology Co Ltd
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Abstract

The utility model discloses a kind of device for low-temperature plasma synergistic catalysis treatment organic exhaust gas, including the pretreatment unit set gradually, low-temperature plasma synergistic catalytic unit, adsorption reaction device and air-introduced machine, the outlet side of described air-introduced machine arranges discharge tower.This utility model is high to organic waste-gas purification efficiency, effective, is affected little by various environment and external condition, the biggest flow, low concentration, the organic exhaust gas of complicated component, and purification efficiency is high.

Description

A kind of device for low-temperature plasma synergistic catalysis treatment organic exhaust gas
Technical field
This utility model relates to environmental project and plasma science technical field, more specifically to one for low The device of organic exhaust gas is administered in isothermal plasma concerted catalysis.
Background technology
Along with socioeconomic development, the continuous quickening of process of industrialization, environment and energy problem are increasingly subject to people Concern.Large-scale commercial production and the discharge of people's daily life, can produce a large amount of organic exhaust gas in various degree, The living environment of the mankind is caused serious threat.At present, major part industrial organic exhaust gas has low concentration, Wind Volume, many The features such as component, traditional Processing tecchnics can not reach to administer requirement.
Traditional administering method includes absorption process, absorption method, condensation method and bioanalysis.The investment cost of activated carbon adsorption is relatively Low, and high treating effect, it is the most frequently used VOCs treatment engineering.But due to activated carbon adsorption saturated after need Regeneration, so the operating cost of employing activated carbon adsorption is higher, and operating process is complicated.Bioremediation investment and running cost With the most relatively low, but running operation complexity, floor space is big, there is the probability of secondary pollution.Catalytic combustion method also exists suction Attached concentration is desorbed the process of burning again, and equipment volume is relatively big, and catalyst price is high, once invests the problems such as big.
In recent years, lower temperature plasma technology has caused increasing concern, and plasma is referred to as except solid-state, liquid The 4th kind of material existing forms outside state and gaseous state, is made up of electronics, ion, free radical and neutral particle, overall guarantor Hold electric neutrality.In low-temperature plasma body, there is O, OH isoreactivity particle that substantial amounts of high energy electron and high energy electron produce, Then cause the physics of series of complex, chemical reaction, make the macromolecule contaminant of complexity be changed into simple small-molecule substance, Or make poisonous and harmful substance be changed into nontoxic or low toxicity low pest matter, the removal so that pollutant are degraded.Low temperature etc. Gas ions technology has that technique is simple, handling process is short, small investment, occupation of land is little, clearance is high, operating cost is low (mainly shows For the electricity charge), the feature such as applied widely.
When utilizing Low Temperature Plasma Treating organic exhaust gas and foul waste gas, also there is also some problems: 1, put relatively low Under piezoelectric voltage, inefficient to some constitutionally stable voc_s removals;2, the dusty gas time of staying is short;3, plasma The higher intermediate product of toxicity can be produced in purification process or it is the intermediate product than original molecule more difficult degradation, there is oxygen Change not exclusively and ozone remains the problem causing secondary pollution.
For the deficiency of above-mentioned single plasma treatment technique, we have proposed plasma body cooperative catalytic adsorption skill Art.This utility model is plasma, be catalyzed and adsorb the advantage superposition of three big technology, inferior position is complementary efficiently removes organic waste Gas technology.The purpose of this utility model is to provide a kind of low temperature plasma and catalyst combined removal organic exhaust gas integrated technology And application.
Utility model content
For the process of the organic exhaust gas of low concentration, atm number, complicated component in current industrial organic exhaust gas, it is provided that a kind of Device for low-temperature plasma synergistic catalysis treatment organic exhaust gas.
In order to realize above-mentioned technical purpose, this utility model adopts the following technical scheme that: a kind of for low temperature plasma The device of organic exhaust gas is administered in concerted catalysis, including the pretreatment unit set gradually, low-temperature plasma synergistic catalysis dress Put, adsorption reaction device and air-introduced machine, the outlet side of described air-introduced machine arranges discharge tower.
Further, described low-temperature plasma synergistic catalytic unit includes housing, and the bottom of described housing is arranged props up Spike, one end of described housing arranges air inlet, arranges low-temperature plasma synergistic catalysis region of discharge, described shell in described housing The other end of body arranges air outlet, and the sidewall of described housing arranges installing port.
Further, low-temperature plasma synergistic catalysis region is low-temperature plasma synergistic catalytic unit and catalyst collection Integral, the emergence pattern of described low temperature plasma uses double-dielectric barrier discharge pattern, and described catalyst carrier is fixed on Discharge of plasma in low temperature district.
Further, described low-temperature plasma synergistic catalytic unit uses palisade discharging structure, and described palisade discharges Structure vertical is placed in organic exhaust gas and enters passage, and described discharge power supply uses high voltagehigh frequency discharge power supply, and described catalyst is Noble metal.
Further, described high voltagehigh frequency discharge power supply input power is 220VAC, 50Hz, and it exports High Level AC Voltage Source voltage peak is 10kV, and high-tension transformer includes oil-immersed type transformer and dry-type transformer.
Technical characterstic of the present utility model and effect be:
1) catalyst is placed in plasma discharge by this utility model, and adsorption treatment has been done again in rear end.Avoid Simple plasma or adsorption system for the abundant not of VOCs treatment and absorb incomplete problem.It is greatly improved The effect of waste gas pollution control and treatment.
2) this utility model uses technology and device are applicable to the organic exhaust gas of low concentration, atm number, complicated component Process.
3) react at normal temperatures, it is not necessary to increase burning and heat riser.
4) catalyst plays the effect reducing reaction activity in the middle of low temperature plasma, and provides a reaction Space so that active substance and organic molecule fast reaction.An adsorption reaction district is added in rear end so that unreacted is completely Material continues reaction, process more complete, will not produce secondary pollution.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of low-temperature plasma synergistic catalytic unit.
Wherein, 1, pretreatment system;2, low-temperature plasma synergistic catalytic unit;3, adsorption reaction device;4, air-introduced machine; 5, discharge tower;6, air inlet;7, device case;8, installing port;9, low-temperature plasma synergistic catalysis region of discharge;10, air outlet; 11, device props up spike.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with embodiment, to this Utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain this practicality Novel, it is not used to limit this utility model.
This utility model provides a kind of device for low-temperature plasma synergistic catalysis treatment organic exhaust gas, its pretreatment System includes cooling process, dust removal process and dehumidification treatments.
Refer to Fig. 1 and Fig. 2, it is preferable that include pretreatment unit 1, the low-temperature plasma synergistic catalysis set gradually Device 2, adsorption reaction device 3 and air-introduced machine 4, the outlet side of air-introduced machine 4 arranges discharge tower 5.
Refer to Fig. 1 and Fig. 2, it is preferable that low-temperature plasma synergistic catalytic unit 2 includes housing 7, the end of housing 7 End arranges a spike 11, and one end of housing 7 arranges air inlet 6, arranges low-temperature plasma synergistic catalysis region of discharge 9 in housing 7, The other end of housing 7 arranges air outlet 10, and the sidewall of housing 7 arranges installing port 8.
Refer to Fig. 1 and Fig. 2, it is preferable that the low-temperature plasma synergistic catalysis region in step 2 is low temperature plasma Concerted catalysis device 2 and catalyst are integrated, and the emergence pattern of low temperature plasma uses double-dielectric barrier discharge pattern, urges Agent carrier is fixed on discharge of plasma in low temperature district.
Refer to Fig. 1 and Fig. 2, it is preferable that low-temperature plasma synergistic catalytic unit 2 uses planar discharging structure, planar Discharging structure vertical pendulum is placed on organic exhaust gas and enters passage, and discharge power supply uses high voltagehigh frequency discharge power supply, and your gold catalyst is Belong to.
Refer to Fig. 1 and Fig. 2, it is preferable that high voltagehigh frequency discharge power supply input power is 220VAC, 50Hz, it exports height Pressure AC supply voltage peak value is 10kV, and high-tension transformer includes oil-immersed type transformer and dry-type transformer.
Refer to Fig. 1 and Fig. 2, it is preferable that planar discharging structure is the discharge module of a standard, according to processing waste gas The parameter determination discharge module quantity such as kind, air quantity, concentration, put the number of plies etc..
Refer to Fig. 1, it is preferable that pretreatment system includes cooling process, dust removal process and dehumidification treatments.
The organic exhaust gas collected is entered in pretreatment system by pipeline, and pretreatment system includes waste gas cooling system, removes Dirt equipment and dehumidification equipment, can be device systems or how many integration of equipments so that pretreated organic exhaust gas Temperature, humidity, amount of dust are in optimal condition under low-temperature plasma synergistic catalytic action;
Pretreated gas sends into low-temperature plasma synergistic catalytic unit, utilizes low-temperature plasma synergistic catalysis to make Decompose with organic exhaust gas, generate harmless little molecule.
Discharge of plasma in low temperature module uses high-frequency and high-voltage power supply electric discharge, high-frequency and high-voltage power supply input requirements civil power 220VAC, 50Hz, export and be connected to face discharge module by high tension cable, and output peak value controls at below 10KV, FREQUENCY CONTROL At 10KHz 20KHz;This discharge power supply is in hgher efficiency, under the conditions of the low temperature plasma producing same energy density, and energy consumption Less.
Gas after being processed by low temperature plasma body concerted catalysis equipment sends into adsorption reaction device by airduct, utilizes Organic molecule that adsorbent reacts the most completely and high energy species, make the further oxidation Decomposition of organic molecule.This adsorption reaction District uses adsorbent as matrix, generally uses cellular modular structure, windage installation less, more convenient and replacing.
Free of contamination gas after decomposing oxidation by air-introduced machine and discharges tower qualified discharge.
Low-temperature plasma synergistic catalytic unit uses square structure, can use either in a horizontal or vertical structure, enters dress The gas putting inside is evenly distributed on device interior by shunting, then immediately proceeds to low-temperature plasma synergistic catalysis electric discharge District, this electric discharge uses double-dielectric barrier discharge pattern, and discharge module uses face discharging structure, the gas face passed through electric discharge mould Block, face discharge module at least one of which is covered with equipment cross section, and catalyst carrier is fixed on discharge of plasma in low temperature district;Catalyst is adopted Use noble metal catalyst.A series of touching is there is in the high energy active electrons that electrion produces with the steam in air, oxygen etc. Hit reaction and generate short-life high activity particle O, HO and superoxide ion etc..Short-life active particle carries out weight further Group generates such as O3And H2O2On these long-life high activity particles.High activity particle has certain polarization for catalyst surface Effect so that catalyst surface more uniformly refines, and improves the catalytic performance of catalyst.Catalyst carrier itself also has one Fixed adsorption, is adsorbed onto surface by contaminant gases and active particle, it is provided that the space needed for reaction, extend reaction time Between, reduce the activation energy of reaction, organic gas is degraded to small-molecule substance.This utility model is to organic waste-gas purification efficiency Height, effective, affected little by various environment and external condition, the biggest flow, low concentration, the organic waste of complicated component Gas, purification efficiency is high.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this Any amendment, equivalent and the improvement etc. made within the spirit of utility model and principle, should be included in this utility model Protection domain within.

Claims (4)

1. the device for low-temperature plasma synergistic catalysis treatment organic exhaust gas, it is characterised in that: include setting gradually Pretreatment unit (1), low-temperature plasma synergistic catalytic unit (2), adsorption reaction device (3) and air-introduced machine (4), described in draw The outlet side of blower fan (4) arranges discharge tower (5);
Described low-temperature plasma synergistic catalytic unit (2) includes housing (7), and the bottom of described housing (7) arranges a spike (11), one end of described housing (7) arranges air inlet (6), arranges low-temperature plasma synergistic catalysis electric discharge in described housing (7) District (9), the other end of described housing (7) arranges air outlet (10), and the sidewall of described housing (7) arranges installing port (8).
Device for low-temperature plasma synergistic catalysis treatment organic exhaust gas the most according to claim 1, its feature exists In: low-temperature plasma synergistic catalysis region be low-temperature plasma synergistic catalytic unit (2) and catalyst integrated, described The emergence pattern of low temperature plasma uses double-dielectric barrier discharge pattern, and described catalyst carrier is fixed on low temperature plasma Region of discharge.
Device for low-temperature plasma synergistic catalysis treatment organic exhaust gas the most according to claim 1, its feature exists In: described low-temperature plasma synergistic catalytic unit (2) uses palisade discharging structure, and described palisade discharging structure is vertically put Entering passage at organic exhaust gas, described discharge power supply uses high voltagehigh frequency discharge power supply, and described catalyst is noble metal catalyst.
Device for low-temperature plasma synergistic catalysis treatment organic exhaust gas the most according to claim 3, its feature exists In: described high voltagehigh frequency discharge power supply input power is 220VAC, 50Hz, and its output high-voltage ac power voltage peak is 10kV, high-tension transformer includes oil-immersed type transformer and dry-type transformer.
CN201620065657.0U 2016-01-22 2016-01-22 A kind of device for low-temperature plasma synergistic catalysis treatment organic exhaust gas Active CN205760609U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107126822A (en) * 2017-07-04 2017-09-05 长沙稻冰工程技术有限公司 Gas cleaning plant
CN109621706A (en) * 2018-12-18 2019-04-16 西安交通大学 A kind of coal chemical industry VOCs integrated treatment and heat energy utilization system and method
CN110302659A (en) * 2019-07-29 2019-10-08 中科新天地(合肥)环保科技有限公司 Low-temperature plasma synergistic biological treating waste gas system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107126822A (en) * 2017-07-04 2017-09-05 长沙稻冰工程技术有限公司 Gas cleaning plant
CN109621706A (en) * 2018-12-18 2019-04-16 西安交通大学 A kind of coal chemical industry VOCs integrated treatment and heat energy utilization system and method
CN109621706B (en) * 2018-12-18 2020-05-19 西安交通大学 System and method for comprehensive treatment and heat energy utilization of VOCs in coal chemical industry
CN110302659A (en) * 2019-07-29 2019-10-08 中科新天地(合肥)环保科技有限公司 Low-temperature plasma synergistic biological treating waste gas system
CN110302659B (en) * 2019-07-29 2022-03-11 中科新天地(合肥)环保科技有限公司 Low-temperature plasma synergistic biological waste gas treatment system

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