CN101797476A - Waste gas treatment device and method based on functions of low-temperature plasma and activated carbon - Google Patents
Waste gas treatment device and method based on functions of low-temperature plasma and activated carbon Download PDFInfo
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- CN101797476A CN101797476A CN 201010124933 CN201010124933A CN101797476A CN 101797476 A CN101797476 A CN 101797476A CN 201010124933 CN201010124933 CN 201010124933 CN 201010124933 A CN201010124933 A CN 201010124933A CN 101797476 A CN101797476 A CN 101797476A
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Abstract
The invention provides waste gas treatment device and method based on functions of low-temperature plasma and activated carbon, wherein the device mainly comprises low-temperature plasma catalyzing modules, activated carbon modules and a fan; and the treatment method comprises the following steps of: sucking waste gas by adopting the fan, enabling the waste gas to sequentially pass through the low-temperature plasma catalyzing modules and the activated carbon modules, and finally discharging the waste gas into atmosphere. The waste gas is fully purified and reaches the discharge standard through the processes of dust removal, low-temperature plasma catalysis and degradation, activated carbon adsorption and the like. The invention can not only ensure the full purification of undegraded waste gas components in the discharging gap of the low-temperature plasma catalyzing modules, but also fully utilize the low-temperature plasma catalysis to reduce the adsorption load of the activated carbon to prolong the service cycle of the activated carbon, and even can realize the in-situ regeneration of the activated carbon. Moreover, the invention also can reduce the quantity of plasma module and the filling amount of the activated carbon so as to relatively reduce one-time investment and running cost, and has the advantages of excellent and stable purification effect, low one-time investment and low running cost.
Description
Technical field
The invention belongs to environmental protection technical field, refer in particular to a kind of based on low temperature plasma catalysis and synergistic emission-control equipment of active carbon and method.
Background technology
Organic exhaust gas mainly comes from industrial processes and prevention and cure of pollution place, mainly comprises an organic exhaust gas that produces such as industrial waste gas such as lacquer spraying waste gas, toy and shoemaking workshop waste gas and garbage transfer station, sewage treatment plant, fruit depots.Contain volatile organic matter (VOC) and foul gas compositions such as benzene series thing, formaldehyde, ethene in this organic wastewater, environmental quality and health have been caused huge harm, its problem of environmental pollution has caused the great attention of national governments and environmental administration.
Processing method for organic exhaust gas mainly contains absorption (mainly adopting active carbon), absorption, catalytic combustion, biological method and plasma technique etc. both at home and abroad.Wherein charcoal absorption, catalytic combustion, biological method are the processing modes of using always.For the processing of organic exhaust gas, its key issue is how to realize good treatment effect and lower investment and the unification between the operating cost, and the simple property of operating process.The investment cost of charcoal absorption is lower, and treatment effect is good, is that the most frequently used organic exhaust gas is handled engineering.But because charcoal absorption needs regeneration after saturated, and technology such as heat regeneration commonly used at present generally can't be carried out in-situ regeneration to active carbon, thus adopt the operating cost of charcoal absorption higher, and complicated operating process.The bioremediation investment is all lower with operating cost, but the operation complexity, floor space is big, has the possibility of secondary pollution.Catalytic combustion method exists absorption and concentrates-process of desorption burning again, and equipment volume is bigger, and noble metal catalyst price height is once invested problems such as big.
In recent years, adopt lower temperature plasma technology to handle the concern that organic exhaust gas more and more is subjected to industry, this technical finesse effect is better, and operating cost is low, and operational administrative is easy, takes up an area of few.But adopt the construction investment of lower temperature plasma technology processing organic exhaust gas higher, and it is bigger to handle in the waste gas of back the pollutant levels transient change in the pulsed discharge process, and the stability of treatment effect is not enough, also can produce ozone in addition, cause secondary pollution, obviously be unfavorable for practical application.
Summary of the invention
The present invention is directed to the existing deficiency of above-mentioned prior art, it is a kind of based on low temperature plasma catalysis and synergistic emission-control equipment of active carbon and method that main purpose is to provide, can solve active carbon regenerative operation complexity effectively, operating cost height and the momentary fluctuation of lower temperature plasma technology treatment effect are big and the problem of secondary pollution arranged.
For realizing above-mentioned purpose, the present invention takes following technical scheme:
A kind of emission-control equipment based on low temperature plasma and active carbon comprises the low temperature plasma catalytic module, active carbon module, the blower fan that connect successively; This low temperature plasma catalytic module excites activity of such catalysts at discharge process, with the degradation organic waste gas pollutant, simultaneously the active carbon module is carried out in-situ regeneration.
Described low temperature plasma catalytic module closely links to each other with the active carbon module and integral type is assembled in the same chamber.
Described low temperature plasma catalytic module adopts the streamer-discahrge low-temperature plasma generator, and this generator comprises that high-voltage pulse power source and metal make the anodal and tabular negative pole of needle-like discharge, and load has catalyst on this tabular negative pole.
Catalyst on the described tabular negative pole adopts nano catalytic material or contains the noble metal catalyst of Pd, Pt, Ag.
Described active carbon module adopts granular activated carbon, Powdered Activated Carbon or NACF.
Described blower fan and active carbon module are the integral type assemblings or are connected by pipeline.
The inlet end integral type of described low temperature plasma catalytic module is assembled or is connected with the pretreated dedusting module of a pair of waste gas by pipeline.
Described dedusting module adopts sack cleaner, electrostatic precipitation or gravitational dust collection.
A kind of based on low temperature plasma catalysis and the synergistic waste gas processing method of active carbon, wherein, waste gas passes through low temperature plasma catalytic module, active carbon module successively under the swabbing action of blower fan, enter atmosphere at last; This low temperature plasma catalytic module excites activity of such catalysts at discharge process, to reach the degradation organic waste gas pollutant, simultaneously the active carbon module is carried out in-situ regeneration.Further described low temperature plasma catalytic module adopts the streamer-discahrge low-temperature plasma generator, this generator comprises that high-voltage pulse power source and metal make the anodal and tabular negative pole of needle-like discharge, described catalyst cupport is on this tabular negative pole, after high-voltage pulse power source is opened, positive pole discharges, and the catalyst activity on the negative pole is excited.
The invention has the advantages that: low temperature plasma is combined the associated treatment organic exhaust gas with catalytic degradation, charcoal absorption; The high energy electron, ion, the free radical high energy particles such as (as O, OH, H) that utilize low temperature plasma to produce at first can directly be degraded to organic exhaust gas; Ultraviolet light and high energy particle that next streamer-discahrge low-temperature plasma generator discharge process is produced can excite activity of such catalysts, the degradation organic waste gas pollutant; And low temperature plasma catalysis can be carried out in-situ regeneration to active carbon.Adopt catalyst can make full use of ultraviolet light and the high energy particle that the low-temperature plasma generator discharge process is produced, significantly improve the degradation capability of low temperature plasma exhaust emission; Utilize the adsorption capacity of active carbon, on the one hand the residual gas after the Low Temperature Plasma Treating is carried out deep purifying, guarantee treatment effect, ozone of eliminating low temperature plasma on the other hand and being produced and high energy particle are to the influence of air quality.The three organically combines, and synergy is handled organic exhaust gas, can obtain high treatment efficiency, need not the regeneration of active carbon dystopy, once invest and effects such as operating cost is low, easy and simple to handle, non-secondary pollution.The present invention can be widely used in the organic exhaust gas that places such as handling industrial production workshop, garbage transfer station, sewage treatment plant, fruit depots produces.
Description of drawings
Fig. 1 is the structural representation of low temperature plasma catalysis of the present invention and active carbon associated treatment exhaust device.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is further described.
Embodiment 1:
As shown in Figure 1, a kind of emission-control equipment based on low temperature plasma and active carbon comprises the dirt module 1, low temperature plasma catalytic module 2, active carbon module 3, the blower fan 4 that connect successively, wherein:
(1) this dedusting module 1 is to adopt simple and easy sack cleaner, can certainly adopt electrostatic precipitation or gravitational dust collection; This low temperature plasma catalytic module 2 adopts the corona plasma generator, it is furnished with high-voltage pulse power source 21, discharge positive pole and negative pole, this discharge positive pole and negative pole are made by steel plate, this positive pole, negative pole adopt pin and plate structure respectively, load contains noble metal (also can be Pt or the Ag etc.) catalyst of Pd on the negative plate, the pulse frequency of this high-voltage pulse power source 21 is f=33kHz, peak impulse voltage U=15kY; Active carbon module 3 adopts granular activated carbon packed bed (diameter 0.07-0.12mm).Dedusting module 1, low temperature plasma catalytic module 2 and active carbon module 3 threes closely link to each other and the integral type assembling.
(2) adopt simulation to contain the lacquer spraying waste gas of toluene, the import mass concentration is 160mg/m
3, gas flow is controlled at 300-1000m
3/ h.
(3) open low daughter and fan power switch after, waste gas passes through dedusting module 1, low temperature plasma catalytic module 2, active carbon module 3 successively under the swabbing action of blower fan 4, after blower fan 4 enter in the atmosphere.The time of staying of gas in reactor is about 2s, and the activity of such catalysts that ultraviolet light that is produced at streamer-discahrge low-temperature plasma generator discharge process and high energy particle can excite the noble metal of contained Pd on the negative pole is with the degradation organic waste gas pollutant; Low temperature plasma catalysis simultaneously can be carried out in-situ regeneration to active carbon.
(4) after testing, in blower fan 4 exit sample analysis residual toluene concentration, record the interior residual toluene concentration of 8h and be lower than 10mg/m3 substantially, clearance is more than 90%.
Embodiment 2:
(1) the present embodiment difference from Example 1 is not adopt the catalyst difference of institute's load on dedusting module and the negative pole; Specific as follows: as to adopt corona plasma in the low temperature plasma catalytic module, discharge positive pole and negative pole are made by steel plate, adopt pin and plate structure respectively, load contains nano titanic oxide catalyst (also can adopt other nano catalytic material) on the negative plate, wherein, the pulse frequency of the low temperature plasma catalytic module mesohigh pulse power is f=50kHz, peak impulse voltage U=20kV; The active carbon module adopts NACF packed bed (v=0.3m/s, active carbon filling thickness 0.2m).The low temperature plasma catalytic module closely links to each other with the active carbon module and the integral type assembling.
(2) adopt simulation formaldehyde volatilization waste gas, the import mass concentration is 120mg/m
3, gas flow is controlled at 300-500m
3/ h.
(3) open low daughter and fan power switch after, waste gas passes through dedusting module, low temperature plasma catalytic module, active carbon module successively under the swabbing action of blower fan, after blower fan enter in the atmosphere.The time of staying of gas in reactor is about 1s.
(4), record the interior residual formaldehyde concentration of 8h and be lower than 5mg/m substantially in blower fan exit sample analysis residual formaldehyde concentration
3, clearance is more than 95%.
Can learn that from above-mentioned two embodiment the present invention adopts low temperature plasma catalysis and active carbon associated treatment waste gas, wherein adopt blower fan suction waste gas, waste gas passes through low temperature plasma catalytic module, active carbon module successively, enters atmosphere at last.Waste gas fully purifies qualified discharge through processes such as dedusting, low temperature plasma catalytic degradation, charcoal absorptions.Synergy by low temperature plasma catalysis and active carbon is handled waste gas, not only can guarantee the do not degrade abundant purification of waste gas components of low temperature plasma catalytic module discharging gap, and can make full use of low temperature plasma catalysis reduction charcoal absorption load, prolong the life cycle of active carbon, even can realize the in-situ regeneration of active carbon.Adopt low temperature plasma catalysis and activated carbon combined processing waste gas, can reduce the plasma module number, reduce the loadings of active carbon simultaneously, so just reduced once investment and operating cost relatively, obtain better effect.This invention waste gas purification is respond well and stable, once invests lowly, and operating cost is low.
The above, it only is preferred embodiment of the present invention, be not that technical scope of the present invention is imposed any restrictions, so every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any trickle modification, equivalent variations and modification that above embodiment did.
Claims (10)
1. the emission-control equipment based on low temperature plasma and active carbon is characterized in that: comprise the low temperature plasma catalytic module, active carbon module, the blower fan that connect successively; This low temperature plasma catalytic module excites activity of such catalysts at discharge process, with the degradation organic waste gas pollutant, simultaneously the active carbon module is carried out in-situ regeneration.
2. according to the described emission-control equipment based on low temperature plasma and active carbon of claim 1, it is characterized in that: described low temperature plasma catalytic module closely links to each other with the active carbon module and integral type is assembled in the same chamber.
3. according to claim 1 or 2 described emission-control equipments based on low temperature plasma and active carbon, it is characterized in that: described low temperature plasma catalytic module adopts the streamer-discahrge low-temperature plasma generator, this generator comprises that high-voltage pulse power source and metal make the anodal and tabular negative pole of needle-like discharge, and load has catalyst on this tabular negative pole.
4. according to the described emission-control equipment based on low temperature plasma and active carbon of claim 3, it is characterized in that: the catalyst on the described tabular negative pole adopts nano catalytic material or contains the noble metal catalyst of Pd, Pt or Ag.
5. according to the described emission-control equipment based on low temperature plasma and active carbon of claim 1, it is characterized in that: described active carbon module adopts granular activated carbon, Powdered Activated Carbon or NACF.
6. according to the described emission-control equipment based on low temperature plasma and active carbon of claim 1, it is characterized in that: described blower fan and active carbon module are the integral type assemblings or are connected by pipeline.
7. according to the described emission-control equipment based on low temperature plasma and active carbon of claim 1, it is characterized in that: the inlet end integral type of described low temperature plasma catalytic module is assembled or is connected with the pretreated dedusting module of a pair of waste gas by pipeline.
8. according to the described emission-control equipment based on low temperature plasma and active carbon of claim 6, it is characterized in that: described dedusting module adopts sack cleaner, electrostatic precipitation or gravitational dust collection.
9. one kind based on low temperature plasma catalysis and the synergistic waste gas processing method of active carbon, and it is characterized in that: waste gas passes through low temperature plasma catalytic module, active carbon module successively under the swabbing action of blower fan, enter atmosphere at last; Wherein this low temperature plasma catalytic module excites activity of such catalysts at discharge process, to reach the degradation organic waste gas pollutant, simultaneously the active carbon module is carried out in-situ regeneration.
10. described based on low temperature plasma catalysis and the synergistic waste gas processing method of active carbon according to claim 9, it is characterized in that: described low temperature plasma catalytic module adopts the streamer-discahrge low-temperature plasma generator, this generator comprises that high-voltage pulse power source and metal make the anodal and tabular negative pole of needle-like discharge, described catalyst cupport is on this tabular negative pole, after high-voltage pulse power source is opened, positive pole discharges, and the catalyst activity on the negative pole is excited.
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| CN103285719A (en) * | 2013-05-24 | 2013-09-11 | 北京航空航天大学 | Method for treating chlorohydrocarbon-containing gas by low-temperature plasma |
| CN103721510A (en) * | 2013-12-13 | 2014-04-16 | 江苏中科睿赛污染控制工程有限公司 | VOCs high-efficiency processing method |
| CN103920362A (en) * | 2014-04-22 | 2014-07-16 | 常州友达环保科技有限公司 | Exhaust gas treatment device and method by virtue of online desorption and degradation |
| CN105521705A (en) * | 2016-01-22 | 2016-04-27 | 中科新天地（合肥）环保科技有限公司 | Method for treating organic waste gas through low-temperature plasma concerted catalysis |
| CN105536457A (en) * | 2016-01-11 | 2016-05-04 | 宁波大学 | Method for treating malodorous gas produced during fish meal processing |
| CN106268206A (en) * | 2015-05-28 | 2017-01-04 | 刘颖姝 | Gas cleanup component and containing its gas purifier |
| CN106979526A (en) * | 2016-01-19 | 2017-07-25 | 天津科技大学 | A kind of VOCs is catalyzed the low temperature plasma quick igniting method of self-sustaining burning |
| CN107029527A (en) * | 2017-05-27 | 2017-08-11 | 南京大学环境规划设计研究院有限公司 | A kind of fitting space peculiar smell purification method and device |
| CN108261896A (en) * | 2018-02-06 | 2018-07-10 | 山东盛唐环保科技有限公司 | A kind of purification method of low-temperature plasma exhaust gas |
| CN109012063A (en) * | 2018-07-17 | 2018-12-18 | 天津市远卓环境工程股份有限公司 | Low temperature spiral corona plasma foul gas processing unit |
| CN109395765A (en) * | 2018-10-09 | 2019-03-01 | 南京工业大学 | Preparation and application of catalyst suitable for low-temperature plasma treatment of organic waste gas |
| 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 |
| CN110064291A (en) * | 2019-05-07 | 2019-07-30 | 中冶华天工程技术有限公司 | Integrated form low concentration foul waste gas processing unit |
| CN111810275A (en) * | 2020-06-05 | 2020-10-23 | 大庆德斯曼环保设备有限公司 | Tail gas purifier of fuel oil engine |
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| CN112316679A (en) * | 2020-10-20 | 2021-02-05 | 中国科学院地球环境研究所 | Low-temperature plasma VOCs purification device and method |
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| CN103285719A (en) * | 2013-05-24 | 2013-09-11 | 北京航空航天大学 | Method for treating chlorohydrocarbon-containing gas by low-temperature plasma |
| CN103285719B (en) * | 2013-05-24 | 2015-11-18 | 北京航空航天大学 | A kind of Low Temperature Plasma Treating is containing the method for the gas of chlorohydrocarbon |
| CN103721510A (en) * | 2013-12-13 | 2014-04-16 | 江苏中科睿赛污染控制工程有限公司 | VOCs high-efficiency processing method |
| CN103920362A (en) * | 2014-04-22 | 2014-07-16 | 常州友达环保科技有限公司 | Exhaust gas treatment device and method by virtue of online desorption and degradation |
| CN106268206A (en) * | 2015-05-28 | 2017-01-04 | 刘颖姝 | Gas cleanup component and containing its gas purifier |
| CN105536457A (en) * | 2016-01-11 | 2016-05-04 | 宁波大学 | Method for treating malodorous gas produced during fish meal processing |
| CN105536457B (en) * | 2016-01-11 | 2018-03-27 | 宁波大学 | The processing method of foul gas in a kind of fish meal processing |
| CN106979526A (en) * | 2016-01-19 | 2017-07-25 | 天津科技大学 | A kind of VOCs is catalyzed the low temperature plasma quick igniting method of self-sustaining burning |
| CN105521705A (en) * | 2016-01-22 | 2016-04-27 | 中科新天地（合肥）环保科技有限公司 | Method for treating organic waste gas through low-temperature plasma concerted catalysis |
| CN107029527A (en) * | 2017-05-27 | 2017-08-11 | 南京大学环境规划设计研究院有限公司 | A kind of fitting space peculiar smell purification method and device |
| CN108261896A (en) * | 2018-02-06 | 2018-07-10 | 山东盛唐环保科技有限公司 | A kind of purification method of low-temperature plasma exhaust gas |
| CN109012063A (en) * | 2018-07-17 | 2018-12-18 | 天津市远卓环境工程股份有限公司 | Low temperature spiral corona plasma foul gas processing unit |
| CN109395765A (en) * | 2018-10-09 | 2019-03-01 | 南京工业大学 | Preparation and application of catalyst suitable for low-temperature plasma treatment of organic waste gas |
| 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 |
| CN110064291A (en) * | 2019-05-07 | 2019-07-30 | 中冶华天工程技术有限公司 | Integrated form low concentration foul waste gas processing unit |
| CN111810275A (en) * | 2020-06-05 | 2020-10-23 | 大庆德斯曼环保设备有限公司 | Tail gas purifier of fuel oil engine |
| CN111974180A (en) * | 2020-06-17 | 2020-11-24 | 金华市中荷环保科技有限公司 | Large-scale reactor of low temperature plasma |
| CN111974180B (en) * | 2020-06-17 | 2022-04-22 | 金华市中荷环保科技有限公司 | Large-scale reactor of low temperature plasma |
| CN112316679A (en) * | 2020-10-20 | 2021-02-05 | 中国科学院地球环境研究所 | Low-temperature plasma VOCs purification device and method |
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Application publication date: 20100811 |