CN105664679A - DBD plasma exhaust-gas treatment equipment - Google Patents
DBD plasma exhaust-gas treatment equipment Download PDFInfo
- Publication number
- CN105664679A CN105664679A CN201610019793.0A CN201610019793A CN105664679A CN 105664679 A CN105664679 A CN 105664679A CN 201610019793 A CN201610019793 A CN 201610019793A CN 105664679 A CN105664679 A CN 105664679A
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- gas treatment
- dbd
- treatment equipment
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- dbd plasma
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/304—Hydrogen sulfide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/406—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses DBD (Dielectiric Barrier Discharges) plasma exhaust-gas treatment equipment. The DBD plasma exhaust-gas treatment equipment comprises a pretreatment tower, a DBD plasma reactor, a post-treatment tower, and an exhaust pipe. The DBD plasma reactor comprises three-stage discharge plasma reactors. Detachable discharge tubes are arranged in the DBD plasma reactors. Each discharge tube comprises an inner electrode, an external electrode, an insulation medium inner layer, an insulation medium external layer and a built-in power supply, wherein the insulation medium inner layer is in a detachable structure; and a surface, close to the external electrode, of the insulation medium inner layer is coated with a catalyst. The structure is simple, mixing pollutants can be simultaneously eliminated, no secondary pollution is generated, energy saving and environmental protection requirements can be satisfied, main pollutants such as a volatile organic compound (VOC), dioxin, an inorganic substance, hydrogen sulfide, ammonia gas, and sulfur alcohol can be effectively removed, various putrid odors can be removed, and deodorization efficiency can reach as high as more than 99%.
Description
Technical field
The invention belongs to technical field of waste gas treatment, be specifically related to a kind of plasma waste gas treatment equipment.
Background technology
Two English (Dioxin), also known as dioxa glutinous rehmannia, a kind of colorless and odorless, liposoluble substance that toxicity is serious, two English are actually an abbreviation of two English classes, what it referred to is not a kind of one matter, but the two big class organic compound comprising numerous congener or isomer that structure and character are all much like. Two English include 210 kinds of compounds, and this kind of material is highly stable, and fusing point is higher, it is extremely difficult to be dissolved in water, it is possible to be dissolved in majority of organic solvent, are the liposoluble substances of colorless and odorless, so being very easy to accumulate in vivo, harm is serious.
Two English source complexity in atmospheric environment, wherein the burning of field of Environment Protection produces (including pharmaceutical wastewater to burn, the incineration of waste in chemical plant, consumer waste incineration, coal-burning power plant etc.). Doped fuel, coal, the timber of preservative treatment and oil product, the particularly Biohazard Waste of various garbage in ignition temperature lower than 300-400 DEG C. The processes such as the production link of igelite, paper, chlorine and some pesticide, smelting iron and steel, catalyst high temperature chlorine activation all can discharge two English in environment. Two English are also present in some Pesticidal products as impurity, such as Pentachorophenol, 5-T etc.
The removal of two English also has different measures, as pyrolytic, chilling avoid resynthesis, low temperature active charcoal absorption etc., the method can meet existing discharge standard substantially, but when environmental protection standard improves constantly (close to EU criteria), setting up a set of low energy consumption, high efficiency and two stable English removal devices is current urgent problem.
Dielectric barrier discharge (DielectricBarrierDischarges is called for short DBD) is named again voltolising, is a kind of typical nonequilibrium state AC gas discharge. DBD plasma be a kind of reliably, atmospheric pressure normality produces nonequilibrium, one is widely used in that ozone synthesis, high-power purple be outer and vacuum ultraviolet light source, water process and the method for the field such as environmental conservation and economy.
DBD industrial waste gas of plasma treatment technology, is the new revolution in the green technology development and application field generally acknowledged in current international coverage. Owing to it to the efficient-decomposition of contaminant molecule and processes the features such as energy consumption is low, the process for industrial waste gas opens a new thinking.
Summary of the invention
The present invention introduces catalyst on the basis of DBD plasma technique, and it is different according to organic exhaust gas composition, use different catalyst, make that plasma technique operating condition is gentleer, energy consumption reduces further, and can effectively suppress the generation of intermediate by-products. The invention provides a kind of simple in construction, the plasma waste gas treatment equipment that purification efficiency is high.
The technical solution used in the present invention is: a kind of DBD plasma organic waste gas treatment equipment, including pretreater, DBD plasma reactor, finishing column, exhaustor, being sequentially connected by pipeline between described pretreater, plasma reactor, finishing column, exhaustor and connect, described DBD plasma reactor includes one-level discharging plasma reactor, two-stage discharge plasma reactor and three grades of discharging plasma reactors.
Further, it is equipped with dismountable discharge tube in described one-level discharging plasma reactor, two-stage discharge plasma reactor and three grades of discharging plasma reactors, described discharge tube includes interior electrode, external electrode, dielectric internal layer, dielectric outer layer and built-in power, described dielectric internal layer is between inner and outer electrodes, and described dielectric internal layer has catalyst near the surface-coated of external electrode.
Further, described discharge tube also includes dielectric middle level, described dielectric middle level and dielectric outer layer composition double-layer hollow structure, described external electrode is positioned at described double-layer hollow structure, and there is catalyst in described dielectric middle level near the surface-coated of interior electrode.
Further, described dielectric is the material that dielectric constant is high, and described catalyst is for being MnO2、TiO2And metal oxide containing precious metals.
Further, one end of described discharge tube is provided with screw thread, it is provided with bracing frame in described discharge tube, the other end of described discharge tube is provided with dismountable fixing plug, support frame as described above and the described fixing cutting ferrule being provided with beyond the Great Wall for fixing described dielectric internal layer, the centre of described fixed cover is provided with interior electrode contact, and the end face of described fixing plug is provided with external electrode contact.
Further, it is provided with air compressor machine, cleaner and/or air accumulator in described pretreater.
Further, described cleaner is pulsed sack cleaner or electrostatic precipitator.
Further, it is provided with increasing apparatus, absorbent charcoal adsorber and/or spray equipment in described finishing column.
Further, also including blower fan, described blower fan is positioned at the exit of described plasma reactor, and after processing with acceleration, gas is discharged and reduced the pressure in low-temperature plasma body, accelerates the speed of the waste gas whole device of entrance.
Further, it is provided with heat sink in described plasma reactor.
Beneficial effects of the present invention: 1. simple in construction, and mixed pollutants (some situation also has synergism), non-secondary pollution can be eliminated simultaneously, the needs of energy-conserving and environment-protective can be met. 2. effectively removing the major pollutants such as volatile organic matter (VOC), inorganic matter, hydrogen sulfide, ammonia, thio-alcohol and various foul smell, deodorization efficiency reaches as high as more than 99%.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the structural representation of discharge tube in the present invention;
Fig. 3 is the Section A-A figure of Fig. 2;
Fig. 4 is the left view of Fig. 2;
Fig. 5 is the right view of Fig. 2.
In figure, 1 is pretreater, 2 is air inlet pipe, 3 is one-level discharging plasma reactor, 4 is two-stage discharge plasma reactor, 5 is three grades of discharging plasma reactors, 6 is discharge tube, 7 is DBD plasma reactor, 8 is blower fan, 9 is finishing column, 10 is exhaustor, 11 is bracing frame, 12 is screw thread, 13 is dielectric outer layer, 14 is external electrode, 15 is dielectric middle level, 16 is interior electrode, 17 is dielectric internal layer, 18 is fixing plug, 19 is cutting ferrule, 20 is interior electrode contact, 21 is gas outlet, 22 air inlets, 23 is external electrode contact.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
As Figure 1-5, the DBD plasma waste gas treatment equipment of the present invention includes air inlet pipe 2, pretreater 1, DBD plasma reactor 7, blower fan 8, finishing column 9, exhaustor 10, is sequentially connected by pipeline and connects between described air inlet pipe, pretreater, plasma reactor, blower fan, finishing column, exhaustor. Described DBD plasma reactor includes one-level discharging plasma reactor 3, two-stage discharge plasma reactor 4 and three grades of discharging plasma reactors 5, is equipped with dismountable discharge tube 6 in plasma reactors at different levels.
Described discharge tube includes interior electrode 16, external electrode 14, dielectric internal layer 17, dielectric middle level 15, dielectric outer layer 13 and built-in power (not marking in figure), dielectric is the material that the dielectric constant such as quartzy, ceramic is high, described dielectric internal layer is between inner and outer electrodes, described dielectric middle level and dielectric outer layer composition double-layer hollow structure, described external electrode is positioned at described double-layer hollow structure, being coated with catalyst on described dielectric internal layer, catalyst can be MnO2、TiO2And metal oxide containing precious metals, one end of described discharge tube is provided with screw thread 12, between discharge tube and DBD plasma reactor be screw thread in succession. Bracing frame 11 it is provided with in described discharge tube, the other end of described discharge tube is provided with fixing plug 18, fixing plug is also threadeded with between dielectric outer tube, support frame as described above and the described fixing cutting ferrule 19 being provided with beyond the Great Wall for fixing described dielectric, the centre of described fixing plug is provided with interior electrode contact 20, and the end face of fixing plug is provided with external electrode contact 23.
In this example, being provided with air compressor machine, cleaner and air accumulator in pretreater, cleaner therein is pulsed sack cleaner or electrostatic precipitator. Increasing apparatus, absorbent charcoal adsorber and spray equipment it is provided with in finishing column. Being provided with blower fan in the exit of described DBD plasma reactor, after processing with acceleration, gas is discharged and is reduced the pressure in low-temperature plasma body, accelerates the speed of the waste gas whole device of entrance.
In waste gas treatment process, organic exhaust gas is after air compressor machine compresses, enter pulsed sack cleaner or electrostatic precipitator dedusting, in DBD plasma reactor, waste gas sequentially passes through air inlet 22 and the gas outlet 21 of discharge tube in one-level discharging plasma reactor, two-stage discharge plasma reactor and three grades of discharging plasma reactors. Power supply in discharge tube is independent built-in power, and the damage of single discharge tube is without influence on the treatment effect of DBD plasma reactor. The exit of DBD plasma reactor is provided with blower fan, accelerates the discharge of waste gas.
Waste gas after treatment, sequentially passes through increasing apparatus, absorbent charcoal adsorber and spray equipment, in finishing column, exhaust gas residues is further processed, and discharges by exhaustor.
The present invention is simple to operate, treating capacity is big, can effectively process poisonous and difficult degradation material, can meet the needs of energy-conserving and environment-protective. And stable and reliable operation, it is not necessary to personal management and regular maintenance, only need to make regular check on, energy consumption is low, windage < 50pa.
The explanation of above example is only intended to help to understand method and the core concept thereof of the present invention. The above is only the preferred embodiment of the present invention, should be understood that, finiteness due to literal expression, and objectively there is unlimited concrete structure, for those skilled in the art, under the premise without departing from the principles of the invention, it is also possible to make some improvement, retouching or change, it is also possible to above-mentioned technical characteristic is combined by rights; These improve retouching, change or combination, or the not improved design by invention and technical scheme directly apply to other occasion, are regarded as protection scope of the present invention.
Claims (10)
1.DBD plasma waste gas treatment equipment, it is characterized in that, including pretreater, DBD plasma reactor, finishing column, exhaustor, being sequentially connected by pipeline between described pretreater, plasma reactor, finishing column, exhaustor and connect, described DBD plasma reactor includes one-level discharging plasma reactor, two-stage discharge plasma reactor and three grades of discharging plasma reactors.
2. DBD plasma waste gas treatment equipment according to claim 1, it is characterized in that, it is equipped with dismountable discharge tube in described one-level discharging plasma reactor, two-stage discharge plasma reactor and three grades of discharging plasma reactors, described discharge tube includes interior electrode, external electrode, dielectric internal layer, dielectric outer layer and built-in power, described dielectric internal layer is between inner and outer electrodes, and described dielectric internal layer has catalyst near the surface-coated of external electrode.
3. DBD plasma waste gas treatment equipment according to claim 2, it is characterized in that, described discharge tube also includes dielectric middle level, described dielectric middle level and dielectric outer layer composition double-layer hollow structure, described external electrode is positioned at described double-layer hollow structure, and there is catalyst in described dielectric middle level near the surface-coated of interior electrode.
4. the DBD plasma waste gas treatment equipment according to any one of Claims 2 or 3, it is characterised in that described dielectric is the material that dielectric constant is high, and described catalyst is for being MnO2、TiO2And metal oxide containing precious metals.
5. DBD plasma waste gas treatment equipment according to claim 4, it is characterized in that, one end of described discharge tube is provided with screw thread, it is provided with bracing frame in described discharge tube, the other end of described discharge tube is provided with dismountable fixing plug, support frame as described above and the described fixing cutting ferrule being provided with beyond the Great Wall for fixing described dielectric internal layer, the centre of described fixed cover is provided with interior electrode contact, and the end face of described fixing plug is provided with external electrode contact.
6. DBD plasma waste gas treatment equipment according to claim 4, it is characterised in that be provided with air compressor machine, cleaner and/or air accumulator in described pretreater.
7. DBD plasma exhaust treatment system according to claim 6, it is characterised in that described cleaner is pulsed sack cleaner or electrostatic precipitator.
8. DBD plasma waste gas treatment equipment according to claim 4, it is characterised in that be provided with increasing apparatus, absorbent charcoal adsorber and/or spray equipment in described finishing column.
9. DBD plasma waste gas treatment equipment according to claim 4, it is characterised in that also including blower fan, described blower fan is positioned at the exit of described plasma reactor.
10. DBD plasma waste gas treatment equipment according to claim 4, it is characterised in that be provided with heat sink in described plasma reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610019793.0A CN105664679A (en) | 2016-01-13 | 2016-01-13 | DBD plasma exhaust-gas treatment equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610019793.0A CN105664679A (en) | 2016-01-13 | 2016-01-13 | DBD plasma exhaust-gas treatment equipment |
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| CN105664679A true CN105664679A (en) | 2016-06-15 |
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| CN201610019793.0A Pending CN105664679A (en) | 2016-01-13 | 2016-01-13 | DBD plasma exhaust-gas treatment equipment |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105920994A (en) * | 2016-07-11 | 2016-09-07 | 安徽紫杉环境科技有限公司 | Balanced feedback type odor collecting and deodorizing device of sewage plant |
| CN106287753A (en) * | 2016-08-10 | 2017-01-04 | 苏州普泽生态环保科技有限公司 | A kind of method and apparatus of high-temperature plasma waste gas from incinerator |
| CN106748647A (en) * | 2016-11-23 | 2017-05-31 | 亚洲硅业（青海）有限公司 | A kind of carbon dioxide low-temperature plasma hydrogenization method methyl alcohol preparation technology |
| CN107253808A (en) * | 2017-07-14 | 2017-10-17 | 合肥耀世同辉科技有限公司 | A kind of hospital's sewage and waste water treatment device |
| CN107433132A (en) * | 2017-09-06 | 2017-12-05 | 哈尔滨工程大学 | A kind of boat diesel engine tail gas nitrogen oxide removing means and removal methods |
| WO2018004329A1 (en) * | 2016-06-27 | 2018-01-04 | Tnb Research Sdn Bhd | An ionization device with variable holding mechanisms for gases or air treatment systems |
| CN107715664A (en) * | 2017-11-27 | 2018-02-23 | 沈阳工业大学 | A kind of system and method for group technology processing spraying waste gas |
| CN107715663A (en) * | 2017-11-27 | 2018-02-23 | 沈阳工业大学 | A kind of system and method for adsorption type low temperature plasma advanced treating foul gas |
| CN108246058A (en) * | 2017-11-08 | 2018-07-06 | 中国矿业大学(北京) | Mercury is removed before a kind of cement kiln synergic processing flying dust kiln He the purifier of bioxin |
| CN109224767A (en) * | 2018-10-10 | 2019-01-18 | 孙冉冉 | A kind of novel papermaking emission-control equipment |
| CN114025460A (en) * | 2021-10-25 | 2022-02-08 | 广州大学 | Plasma jet device |
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| CN1809413A (en) * | 2003-06-17 | 2006-07-26 | 日铁矿业株式会社 | Gas processing method and gas processing apparatus utilizing oxidation catalyst and low-temperature plasma |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018004329A1 (en) * | 2016-06-27 | 2018-01-04 | Tnb Research Sdn Bhd | An ionization device with variable holding mechanisms for gases or air treatment systems |
| CN105920994A (en) * | 2016-07-11 | 2016-09-07 | 安徽紫杉环境科技有限公司 | Balanced feedback type odor collecting and deodorizing device of sewage plant |
| CN106287753A (en) * | 2016-08-10 | 2017-01-04 | 苏州普泽生态环保科技有限公司 | A kind of method and apparatus of high-temperature plasma waste gas from incinerator |
| CN106748647A (en) * | 2016-11-23 | 2017-05-31 | 亚洲硅业（青海）有限公司 | A kind of carbon dioxide low-temperature plasma hydrogenization method methyl alcohol preparation technology |
| CN107253808A (en) * | 2017-07-14 | 2017-10-17 | 合肥耀世同辉科技有限公司 | A kind of hospital's sewage and waste water treatment device |
| CN107433132A (en) * | 2017-09-06 | 2017-12-05 | 哈尔滨工程大学 | A kind of boat diesel engine tail gas nitrogen oxide removing means and removal methods |
| CN107433132B (en) * | 2017-09-06 | 2020-09-25 | 哈尔滨工程大学 | Device and method for removing nitrogen oxides in tail gas of marine diesel engine |
| CN108246058B (en) * | 2017-11-08 | 2020-08-21 | 中国矿业大学(北京) | Purification device for removing mercury and dioxin in front of fly ash kiln by synergistic treatment of cement kiln |
| CN108246058A (en) * | 2017-11-08 | 2018-07-06 | 中国矿业大学(北京) | Mercury is removed before a kind of cement kiln synergic processing flying dust kiln He the purifier of bioxin |
| CN107715664A (en) * | 2017-11-27 | 2018-02-23 | 沈阳工业大学 | A kind of system and method for group technology processing spraying waste gas |
| CN107715663A (en) * | 2017-11-27 | 2018-02-23 | 沈阳工业大学 | A kind of system and method for adsorption type low temperature plasma advanced treating foul gas |
| CN109224767A (en) * | 2018-10-10 | 2019-01-18 | 孙冉冉 | A kind of novel papermaking emission-control equipment |
| CN114025460A (en) * | 2021-10-25 | 2022-02-08 | 广州大学 | Plasma jet device |
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Address after: Tongzi high tech Zone of Hunan province Changsha slope road 410205 No. 185 Hunan Province Public Security Bureau household service center building A room 105 Applicant after: Changsha plus Environmental Protection Technology Co., Ltd. Address before: Tongzi high tech Zone of Hunan province Changsha slope road 410205 No. 185 Hunan Province Public Security Bureau household service center building A room 105 Applicant before: CHANGSHA SHANGYI ELECTRONIC TECHNOLOGY CO., LTD. |
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Application publication date: 20160615 |