CN102614762A - Plasma-based waste gas treatment system - Google Patents
Plasma-based waste gas treatment system Download PDFInfo
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- CN102614762A CN102614762A CN2012101210737A CN201210121073A CN102614762A CN 102614762 A CN102614762 A CN 102614762A CN 2012101210737 A CN2012101210737 A CN 2012101210737A CN 201210121073 A CN201210121073 A CN 201210121073A CN 102614762 A CN102614762 A CN 102614762A
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Abstract
The invention discloses a plasma-based waste treatment system which comprises a pretreatment system, a master control system, a direct current high-voltage pulse power supply, a reductant-oxidant feeding system, a direct current high-voltage narrow pulse discharge system, a combined salt trapping system, a catalysis and oxidation catalyst system and an exhausting system. The pretreatment system carries out gas-water separation and gas-dust separation; the direct current high-voltage narrow pulse discharge system generates substances with strong oxidative activity, organic matters in waste water react with the substances with strong oxidative activity and are oxidized immediately to cause molecule recombination so that macromolecular organic matters become micromolecular organic matters or carbon dioxide and water and the emission standard is reached.
Description
Technical field
The present invention relates to exhaust gas treatment technology, be specifically related to a kind of plasma exhaust treatment system based on lower temperature plasma technology.
Background technology
The low temperature plasma body technique is a kind of new substance modification and deep oxidation technology.Low temperature plasma is the high energy electron that produces through gas phase, discharge in water, forms electron avalanche, causes local electronic high temperature thus, directly acts on nuisance molecular chemistry key, produces OH, H, O, O in the discharge field simultaneously
3Etc. the strong oxidizing property material harmful substance is carried out modification and deep oxidation, thereby reach effect low-cost, that high efficiency is administered foul gas and waste gas.
At present, lower temperature plasma technology commonly used has: glow discharge, high direct voltage pulsed discharge, dielectric barrier discharge, the low temperature plasma method is widely used in foul gas, waste gas and field of waste water treatment.Conventional technology is compared, and the clear superiority of lower temperature plasma technology has: applied range, process structure is simple, treatment effeciency is high, and energy consumption is low, have sterilization, deodorizing, sterilization effect etc.
Though handling at waste gas, foul gas, glow discharge, dielectric barrier discharge have certain application; But glow discharge belongs to low pressure discharge; Be difficult to serialization production, production cost height; Therefore suitability for industrialized production be can't be widely used in, laboratory, lighting product and semi-conductor industry etc. are only limited at present; The high direct voltage pulsed discharge belongs to corona discharge, and the reliable burst pulse DC high-voltage power supply of main at present shortcoming reaches plasma discharge reactor having efficiently; Dielectric barrier discharge causes creepage phenomenon because of medium easy blocking and pollution, the short circuit of guiding discharge loop, and also the pressure loss is bigger.Though above technology has certain technical advantage, but in application, also show technological deficiency separately.
Summary of the invention
Technical problem to be solved by this invention provides a kind of plasma exhaust treatment system, utilizes the high voltage narrow pulse plasma technology to realize the industrial applications that waste gas or foul gas are handled.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of plasma exhaust treatment system comprises preprocessing system, the high direct voltage pulse power, reductant-oxidant add-on system, high direct voltage burst pulse discharge system, group salt trapping system, catalysis and oxidation catalyst system and gas extraction system, wherein,
Preprocessing system carries out air water to collecting the mixture that contains dust, water, vapour, foul gas, waste gas, gas dirt separates, and the waste gas after will handling inputs to high direct voltage burst pulse discharge system, catalysis and oxidation catalyst system successively;
High direct voltage pulse power input standard electric alternating current is pressed, and output is greater than the pulse power of 5MW, to satisfy the continual and steady job requirements of high direct voltage burst pulse discharge system;
High direct voltage burst pulse discharge system provides discharge voltage by the high direct voltage pulse power, produces a large amount of strong oxidation activity particles and active particle, intensive ultraviolet, high temperature cavity, is used for the organic moment oxidation of waste gas;
The reductant-oxidant add-on system is at a high direct voltage burst pulse discharge system discharge interpolation reductant-oxidant; Nuisance in the waste gas is passed through the chain rupture of molecular chemistry key; Molecular recombination is separated out for the inorganic salts crystallization, and collects the inorganic salts crystallization of separating out through group salt trapping system;
Catalysis links to each other with high direct voltage burst pulse discharge system with the oxidation catalyst system; Receive strong oxidation activity particle and waste gas; Step of going forward side by side is carried out deep oxidation reaction, makes in the waste gas that most larger molecular organics or ring-type organic matter degradation are small organic molecule or carbon dioxide and water;
Gas extraction system links to each other with the oxidation catalyst system with catalysis, is used for exhaust emissions.
Also comprise master control system, be connected with above-mentioned each system respectively, control automatically through the embedded Control mode.
Said high direct voltage burst pulse discharge system is composed in parallel by several combined type line cartridge type mechanism units, and wherein, its negative pole is the metal or metal alloy compound cylinder, just very through the central alloying metal silk of metal or metal alloy compound cylinder.
Said combined type line cartridge type mechanism unit is vertical the installation or the level installation, and guarantees negative pole compound cylinder ground connection.
Adopt plasma exhaust treatment system of the present invention, have following advantage:
1, satisfies the working stability demand of high direct voltage burst pulse plasma through the high direct voltage pulse power.
2, adopt the high direct voltage burst pulse discharge system of combined type line cartridge type mechanism, because middle unobstructed, pressure loss is minimum, and gas, the discharge passed through are big, and operating cost is low.And in discharge process, high energy electron towards a direction motion, reduces the loss of electron interaction at a high speed, and metal ion generates the inorganic salts material, to reach the purpose of removing nuisance in waste gas and the foul gas to anodal enrichment.
3, directly utilize O3,0, OH, the H2O2 isoreactivity material of high direct voltage burst pulse discharge generation, can also deodorization and sterilization equipment, and do not need attachment devices such as ozone generator, directly reduced operating cost.
4, use through the stack of catalysis and oxidation catalyst system and high direct voltage burst pulse discharge system, deep oxidation, effect optimization improve the effect of removing stench and waste gas in independent use or inorganic combined treatment effect.
Description of drawings
Be elaborated below in conjunction with accompanying drawing and specific embodiment the present invention:
Fig. 1 is the theory diagram of exhaust treatment system of the present invention.
Fig. 2 is the structural representation of combined type line cartridge type mechanism unit of the present invention.
The specific embodiment
As shown in Figure 1; Exhaust treatment system of the present invention mainly comprises preprocessing system 001, master control system 002, the high direct voltage pulse power 003, reductant-oxidant add-on system 004, high direct voltage burst pulse discharge system 005, group salt trapping system 006, catalysis and oxidation catalyst system 007 and gas extraction system 008; Wherein
001 pair of preprocessing system is collected mixtures such as containing dust, water, vapour, foul gas, waste gas and is carried out air water, the separation of gas dirt, and the waste gas after will handling inputs to high direct voltage burst pulse discharge system 005, catalysis and oxidation catalyst system 007 successively;
The high direct voltage pulse power 003 input standard electric alternating current is pressed (alternating voltage of 220V or 380V); Plasma core module Multiple Combination through quick stack such as electromagnetic energy and AC/DC module and control system etc.; Output is greater than the pulse power of 5MW, thereby can satisfy the continual and steady job requirements of high direct voltage burst pulse discharge system 005;
High direct voltage burst pulse discharge system 005 provides discharge voltage by the 002 high direct voltage pulse power, under the effect of a high direct voltage burst pulse discharge high energy electron that produces, produces a large amount of like OH, O, O
3, H
2O
2Organic free radical isoreactivity particle, intensive ultraviolet, high temperature cavity etc. strong oxidation activity particle and fracture harmful substance molecular chemistry key.Particularly the strong oxidizing property of OH, O and chemical reactivity can be used for organic moment oxidation in the waste gas;
Add NH through reductant-oxidant add-on system 004 in high direct voltage burst pulse discharge system 005 discharge field
3, reductant-oxidant such as S, NO, with the NO in the waste gas
X, SO
XThrough the chain rupture of molecular chemistry key, molecular recombination is separated out for the inorganic salts crystallization Deng nuisance, through group salt trapping system 006, collects the inorganic salts crystallization of separating out;
Catalysis links to each other with high direct voltage burst pulse discharge system 005 with oxidation catalyst system 007; Receive strong oxidation activity particle and waste gas; Step of going forward side by side is carried out deep oxidation reaction; Make in the waste gas that most larger molecular organics or ring-type organic matter degradation are small organic molecule or carbon dioxide and water, be used for exhaust emissions.
Above-mentioned reaction expression is following:
e+O
2→2O+e
e+O
2→O
2 ++2e
e+H
2O→OH+H+e
H
2S+O
2、O
2-、O
2+→SO
3+H
2O
NH
3+O
2、O
2-、O
2+→NOx+H
2O
VOCs+O
2、O
2-、O
2+→CO
2+H
2O
And gas extraction system 008 links to each other with oxidation catalyst system 007 with catalysis, and the tail gas that reaches emission request after the reaction treatment is discharged.
In addition, also treatment system comprises master control system 002, is connected with above-mentioned each system respectively, controls automatically through the embedded Control mode, need not the special messenger and keeps an eye on.
And above-mentioned high direct voltage burst pulse discharge system is to be composed in parallel by as shown in Figure 2 several combined type line cartridge type mechanism units 1; Wherein, Its negative pole 2 (earth electrode) is the metal or metal alloy compound cylinder; Positive pole 3 (sparking electrodes) are the alloying metal silk through the metal or metal alloy cylindrical center, and reductant-oxidant adds passage two groups of discharge tubes are coupled together, and reductant-oxidant adds mouth and adds channel middle for reductant-oxidant; Among Fig. 24 adds mouth for reductant-oxidant, and 5 is insulated terminal.Because unobstructed in the middle of this discharge unit, pressure loss is minimum, the throughput of passing through is big, and operating cost is low.In addition, each said combined type line cartridge type mechanism unit 1 can adopt vertical installation or level to install, and guarantees that negative pole cylinder ground connection is good.
Specifically illustrate in the face of the present invention down:
Embodiment 1,
The percolate foul smell is handled.Deodoration system hydrogen sulfide entrance concentration changing condition.Test period foul smell peak value: 19ppm, a year flat value is about: 5.2ppm.Adopt a kind of stench and exhaust treatment system, power is 2 kilowatts, DC voltage 32000V, discharge frequency 360 times/second, air velocity 50M
3Through behind a kind of stench and the exhaust treatment system, odor strength reduces greatly fast for/min, foul smell, and sense organ does not have stink.
Embodiment 2,
Certain insecticide factory's waste gas, main component: triethylamine 30ppm, n-butanol 80ppm, toluene 120ppm.Adopt a kind of waste gas and foul gas high direct voltage burst pulse plasma process system, 2 kilowatts of power, DC voltage 48000V, discharge frequency 400 times/second, air velocity 40M
3Through behind a kind of stench and the exhaust treatment system, odor strength reduces greatly fast for/min, foul smell, and sense organ does not have stink.Handle the back odor concentration and measure triethylamine 0.5ppm, n-butanol 5ppm, toluene 10ppm.
Certain pharmaceutical factory's waste gas, drain time are 2h/d, Main Ingredients and Appearance: methyl alcohol 60ppm, ammonia 100ppm, dimethyl methyl sulfone 75ppm.Adopt a kind of stench and exhaust treatment system, 2 kilowatts of power, DC voltage 40000V, discharge frequency 600 times/second, through behind a kind of stench and the exhaust treatment system, odor strength reduces greatly fast for air velocity 50M3/min, foul smell.Handle the back odor concentration and measure methyl alcohol 4ppm, ammonia 5ppm, toluene 5.5ppm.
In sum, plasma exhaust treatment system of the present invention has following advantage:
1, discharge system adopts the line core structure, has stopped the block media discharge plasma and has caused the creepage of discharge system because of stopping up, polluting, and can not cause the short circuit phenomenon of discharge loop, the discharge system long service life;
2, system does not have additive, can not cause secondary pollution;
3, automaticity is high, need not the special messenger and keeps an eye on;
4, stable, can move in 24 hours, and do not placed ambient influnence;
5, burst pulse rising edge fast (about 100ns), dutycycle is little;
6, power consumption is little, and processing cost is low;
7, stench and exhaust-gas treatment amount are big;
8, compact conformation, floor space is little, as handling 3000-5000M
3/ h air quantity VOC gas and foul gas device take up an area of only 3-5M
2, be fit to very much industrial applications.
But; Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the present invention; And be not to be used as qualification of the present invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (4)
1. plasma exhaust treatment system, its characteristic exists:
Comprise preprocessing system, the high direct voltage pulse power, reductant-oxidant add-on system, high direct voltage burst pulse discharge system, group salt trapping system, catalysis and oxidation catalyst system and gas extraction system, wherein,
Preprocessing system carries out air water to collecting the mixture that contains dust, water, vapour, foul gas, waste gas, gas dirt separates, and the waste gas after will handling inputs to high direct voltage burst pulse discharge system, catalysis and oxidation catalyst system successively;
High direct voltage pulse power input standard electric alternating current is pressed, and output is greater than the pulse power of 5MW, to satisfy the continual and steady job requirements of high direct voltage burst pulse discharge system;
High direct voltage burst pulse discharge system provides discharge voltage by the high direct voltage pulse power, produces a large amount of strong oxidation activity particles and active particle, intensive ultraviolet, high temperature cavity, is used for the organic moment oxidation of waste gas;
The reductant-oxidant add-on system is at a high direct voltage burst pulse discharge system discharge interpolation reductant-oxidant; Nuisance in the waste gas is passed through the chain rupture of molecular chemistry key; Molecular recombination is separated out for the inorganic salts crystallization, and collects the inorganic salts crystallization of separating out through group salt trapping system;
Catalysis links to each other with high direct voltage burst pulse discharge system with the oxidation catalyst system; Receive strong oxidation activity particle and waste gas; Step of going forward side by side is carried out deep oxidation reaction, makes in the waste gas that most larger molecular organics or ring-type organic matter degradation are small organic molecule or carbon dioxide and water;
Gas extraction system links to each other with the oxidation catalyst system with catalysis, is used for exhaust emissions.
2. plasma exhaust treatment system according to claim 1, its characteristic exists:
Also comprise master control system, be connected with above-mentioned each system respectively, control automatically through the embedded Control mode.
3. plasma exhaust treatment system according to claim 1, its characteristic exists:
Said high direct voltage burst pulse discharge system is composed in parallel by several combined type line cartridge type mechanism units, and wherein, its negative pole is the metal or metal alloy compound cylinder, just very through the central alloying metal silk of metal or metal alloy compound cylinder.
4. plasma exhaust treatment system according to claim 1, its characteristic exists:
Said combined type line cartridge type mechanism unit is vertical the installation or the level installation, and guarantees negative pole compound cylinder ground connection.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102895851A (en) * | 2012-11-01 | 2013-01-30 | 上海万强科技开发有限公司 | Electrolysis and cracking treatment method and system for volatile organic compounds (VOCs) |
| CN103706226A (en) * | 2013-12-31 | 2014-04-09 | 中国科学院高能物理研究所 | Smoke pollutant treatment device |
| CN113019119A (en) * | 2021-03-26 | 2021-06-25 | 上海统源科技有限公司 | Triple duplex reaction method in electrochemical atmosphere |
| CN114917710A (en) * | 2022-05-25 | 2022-08-19 | 浙江中烟工业有限责任公司 | Tobacco peculiar smell processing system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001164926A (en) * | 1999-12-14 | 2001-06-19 | Mitsubishi Motors Corp | Exhaust emission control device for internal combustion engine |
| KR20020000659A (en) * | 2000-06-27 | 2002-01-05 | 이달우 | Apparatus for purifying harmful gas in a reactor using streamer corona discharge driven by high voltage impulse power supply |
| JP2003190774A (en) * | 2001-12-26 | 2003-07-08 | Japan Science & Technology Corp | Discharge electrode fitted to gas treatment |
| CN101318629A (en) * | 2008-07-22 | 2008-12-10 | 章子三 | Process for recycling sulfur and reaching the mark of discharge with inside and outside water cooling Crouse tail gas |
-
2012
- 2012-04-23 CN CN 201210121073 patent/CN102614762B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001164926A (en) * | 1999-12-14 | 2001-06-19 | Mitsubishi Motors Corp | Exhaust emission control device for internal combustion engine |
| KR20020000659A (en) * | 2000-06-27 | 2002-01-05 | 이달우 | Apparatus for purifying harmful gas in a reactor using streamer corona discharge driven by high voltage impulse power supply |
| JP2003190774A (en) * | 2001-12-26 | 2003-07-08 | Japan Science & Technology Corp | Discharge electrode fitted to gas treatment |
| CN101318629A (en) * | 2008-07-22 | 2008-12-10 | 章子三 | Process for recycling sulfur and reaching the mark of discharge with inside and outside water cooling Crouse tail gas |
Non-Patent Citations (1)
| Title |
|---|
| 李杰等: "脉冲电晕放电烟气脱硫的影响因素", 《环境科学》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102895851A (en) * | 2012-11-01 | 2013-01-30 | 上海万强科技开发有限公司 | Electrolysis and cracking treatment method and system for volatile organic compounds (VOCs) |
| CN103706226A (en) * | 2013-12-31 | 2014-04-09 | 中国科学院高能物理研究所 | Smoke pollutant treatment device |
| CN113019119A (en) * | 2021-03-26 | 2021-06-25 | 上海统源科技有限公司 | Triple duplex reaction method in electrochemical atmosphere |
| CN114917710A (en) * | 2022-05-25 | 2022-08-19 | 浙江中烟工业有限责任公司 | Tobacco peculiar smell processing system |
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| CN102614762B (en) | 2013-12-25 |
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Effective date of registration: 20160202 Address after: 200335 room 8, building 33, No. 463, Canton Road, Shanghai, Changning District Patentee after: SHANGHAI DISHENG ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Address before: 201615, nine, Jing Jing Road, Songjiang hi tech park, Shanghai, Songjiang District. 41 Patentee before: Shanghai Wanqiang Technology Development Co.,Ltd. |
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Granted publication date: 20131225 Termination date: 20210423 |