CN104791052A - Plasma automobile exhaust treatment device - Google Patents
Plasma automobile exhaust treatment device Download PDFInfo
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- CN104791052A CN104791052A CN201510116010.6A CN201510116010A CN104791052A CN 104791052 A CN104791052 A CN 104791052A CN 201510116010 A CN201510116010 A CN 201510116010A CN 104791052 A CN104791052 A CN 104791052A
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- electrode
- offgas duct
- exhaust pipe
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Abstract
The invention discloses a plasma automobile exhaust treatment device which comprises an exhaust pipe. A gas inlet is formed in one end of the exhaust pipe, and a gas outlet is formed in the other end of the exhaust pipe. A power source is installed above the exhaust pipe. The exhaust pipe comprises an exhaust pipe outer wall, a grounding electrode, two insulation layers and a high-voltage electrode. The high-voltage electrode is arranged in the outer wall of the upper portion of the exhaust pipe, and the grounding electrode is arranged in the outer wall of the lower portion of the exhaust pipe. The other side of the grounding electrode and the other side of the high-voltage electrode are each provided with one insulation layer. A discharge channel is formed between the two insulation layers. The power source is connected with the grounding electrode and the high-voltage electrode. The power source and the grounding electrode are both grounded. The power source is switched on when the automobile is started, the grounding electrode and the high-voltage electrode are powered on, and exhaust enters the gas inlet, is ionized and decomposed by the discharging channel, and then is exhausted by the gas outlet. The decomposition rate of exhaust pollutants exceeds 92%, and the insulation layer is made of glass fiber reinforced plastics and is low in weight and cost.
Description
Technical field
The present invention relates to technical field of waste gas treatment, specifically a kind of plasma automobile exhaust gas processing apparatus.
Background technique
Gaseous effluent not only smell is strange, and make us dizzy, feel sick, affect the healthy of people.When vehicle is few, the self cleaning capacity of air still can dissolve the toxin of automobile discharge.But along with the sharply increase of automobile quantity, traffic congestion gets married normal potluck, convenient, comfortable, the efficient advantage that automobile should possess gradually offset by too much vehicle." automobile disaster " is formed, and no small harm is done especially for the vehicle exhaust brought thus.Scientific analysis shows, containing hundreds of different compound in vehicle exhaust, pollutant wherein has solid aerosol, carbon monoxide, carbon dioxide, hydrocarbon, oxynitrides, lead and oxygen sulfur compound etc.Larger than own wt 3 times of the harmful exhaust that a car is discharged for 1 year.Britain's air cleaning and environmental protection association once delivered research report and claimed, and compared with traffic accident victim, Britain dies from air-polluting people every year will have more 10 times.
Conventional method is eliminated the scheme of these harmful components in vehicle exhaust and is mainly contained two kinds: a kind of be improve motor combustion manner to reduce the discharge of harmful gas; Another kind adopts catalytic converter by the cleaning harmful gas in tail gas.That early stage employing is more is three-way catalyst (English Three-Way Catalyst by name), is called for short TWC.The characteristic of this catalyzer is with carbon monoxide, hydrocarbon and the nitrogen oxide in a kind of catalyzer energy simultaneously purifying automobile tail gas, but in order to play its catalytic performance, air fuel ratio often must be controlled near 14.6 ± 0.1, this catalytic cleaner has higher purification ratio, but needs the closed-loop feedback systems such as lambda sensor, multi-point fuel electrospray, electronic ignition and match.But along with the development of science and technology in the last few years and the publicity of each medium, plasma vent gas treatment technology is more and more known by people.
Plasma is made up of a large amount of positive negative charged particles and neutral particle, and shows the gas of the highly ionized of collective behavior.Wherein partially or completely ionized gas, and free electron and ion the summation with positive and negative electric charge offset completely, macroscopically present neutral electricity.By plasma flame temperature classifications, plasma can be divided into high-temperature plasma and low temperature plasma, low temperature plasma can be divided into thermal plasma and cold plasma again.Low temperature plasma can along with generation that is a large amount of, miscellaneous active particle in production process, comprising six kinds of typical particles, i.e. and the atom of the atom of electronics, positive ion, negative ion, excited state or molecule, ground state or molecule and photon.These active substances make low temperature plasma play significant role in the waste gas treatment of the sterilization of biomedical sector, sterilization and field of environment engineering and sewage furification field.
Low temperature plasma exhaust gas treatment technology is applied in vehicle maintenance service, there are some difficult points.One-time investment is slightly high, and especially when adopting dielectric barrier discharge method, what medium wherein generally adopted is all metallic material, especially as platinum-rhodium alloy, expensive, and general-utility car cannot be implemented at all.Although have the exhaust gas processing device utilizing plasma technique on a small quantity on the market at present, the method adopted is corona discharge method, and the plasma density of generation is not high, cannot meet the purification requirement of vehicle exhaust far away.
Summary of the invention
The object of the present invention is to provide a kind of with low cost, effective plasma automobile exhaust gas processing apparatus of vent gas treatment, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technological scheme:
A kind of plasma automobile exhaust gas processing apparatus, comprise offgas duct, one end of offgas duct is suction port, the other end of offgas duct is air outlet, is provided with power supply above offgas duct, and offgas duct comprises offgas duct outer wall, ground electrode, isolation layer and high-field electrode, high-field electrode is provided with in the offgas duct outer wall of top, be provided with ground electrode in the offgas duct outer wall of below, the opposite side of ground electrode and high-field electrode is equipped with isolation layer, forms discharge channel between two isolation layers; Power supply connects ground electrode, high-field electrode respectively, power supply and the equal ground connection of ground electrode, isolation layer adopts glass steel material, while automobile starting, power supply also starts, ground electrode and high-field electrode energising, tail gas enters from suction port, and through ionization, the decomposition reaction of discharge channel, the tail gas after process is discharged from air outlet.
Compared with prior art, the invention has the beneficial effects as follows: the present invention makes exhaust pollutant decompose more than 92%, and isolation layer adopts glass steel material, light weight and cost is low.The present invention significantly can reduce the discharge of harmful gas in vehicle exhaust, and reach the object of protection of the environment, it is with low cost, effective.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
In figure: 1-suction port, 2-air outlet, 3-power supply, 4-offgas duct, 5-offgas duct outer wall, 6-ground electrode, 7-isolation layer, 8-high-field electrode, 9-discharge channel.
Embodiment
Below in conjunction with the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
Refer to Fig. 1, in the embodiment of the present invention, a kind of plasma automobile exhaust gas processing apparatus, comprise offgas duct 4, one end of offgas duct 4 is suction port 1, the other end of offgas duct 4 is air outlet 2, power supply 3 is installed above offgas duct 4, for give offgas duct 4 inside ground electrode 6 and high-field electrode 8 power, offgas duct 4 comprises offgas duct outer wall 5, ground electrode 6, isolation layer 7 and high-field electrode 8, high-field electrode 8 is provided with in the offgas duct outer wall 5 of top, ground electrode 6 is provided with in the offgas duct outer wall 5 of below, the opposite side of ground electrode 6 and high-field electrode 8 is equipped with isolation layer 7, discharge channel 9 is formed between two isolation layers 7.Power supply 3 connects ground electrode 6, high-field electrode 8 respectively, power supply 3 and ground electrode 6 all ground connection.In the present invention, isolation layer 7 adopts glass steel material, glass fibre reinforced plastics high-strength light, and relative density, between 1.5 ~ 2.0, only have 1/4 ~ 1/5 of carbon steel, but tensile strength is close, even exceedes carbon steel, and specific strength can compared with high-grade alloy steel.Corrosion-resistant: FRP is good anticorrosive material, there is good resistivity to the acid of air, water and general concentration, alkali, salt and multiple oils and solvent.Be applied to the All aspects of of chemical anticorrosion, replace carbon steel, stainless steel, timber, non-ferrous metal etc.Good electrical property: be excellent insulating material, is used for manufacturing insulator.Still good dielectricity can be protected under high frequency.Microwave transparent is good, is widely used in radome.Thermal characteristics is good: FRP thermal conductivity is low, is 1.25 ~ 1.67kJ/(mhK under room temperature), only having 1/100 ~ 1/1000 of metal, is excellent thermoinsulation material.
Under the effect of extra electric field, what isolation layer electric discharge produced takes in a large number and can bombard contaminant molecule by electronics, first electronics obtains energy from electric field, by ionizing energy trasfer in molecule or atom, the molecule or the atom that obtain energy are excited, there is moieties to be ionized simultaneously, thus become active group; Afterwards these active groups and molecule or atom, between active group and active group, mutual collision rift generates stable product and heat.In addition, high-energy electron also by the stronger materials capture of the electron affinity such as halogen and oxygen, can become negative ion.This kind of negative ion has good chemism, plays an important role in chemical reaction.By physics, the chemical reaction of series of complex, make complicated macromolecule contaminant change simple Small molecular safe material into, or make poisonous and harmful substance be transformed into material that is nontoxic or the low evil of low toxicity, thus pollutant is degraded removal.
The processing method of plasma automobile exhaust gas processing apparatus, step comprises:
1) automobile engine starting, produces tail gas, and power supply 3 works and powers simultaneously.
2) high-field electrode 8 and ground electrode 6 discharge, between two isolation layers be made up of glass fibre reinforced plastics 7, produce plasma fast, and plasma is full of rapidly discharge channel 9.
3) tail gas enters discharge channel 9 from the suction port 1 of offgas duct 4, by Ionized process, the solid-state and gaseous composition in tail gas is effectively separated, and is directly discharged by solid granulates wherein; High-energy electron in gaseous composition and plasma, ion, free radicals and the effect of excited state molecule isoreactivity particle, make gaseous composition decompose within the extremely short time, and follow-up various reactions occur to reach the object of degradation of contaminant.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.
In addition, be to be understood that, although this specification is described according to mode of execution, but not each mode of execution only comprises an independently technological scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technological scheme in each embodiment also through appropriately combined, can form other mode of executions that it will be appreciated by those skilled in the art that.
Claims (1)
1. a plasma automobile exhaust gas processing apparatus, comprise offgas duct (4), one end of offgas duct (4) is suction port (1), the other end of offgas duct (4) is air outlet (2), it is characterized in that, offgas duct (4) top is provided with power supply (3), offgas duct (4) comprises offgas duct outer wall (5), ground electrode (6), isolation layer (7) and high-field electrode (8), high-field electrode (8) is provided with in the offgas duct outer wall (5) of top, ground electrode (6) is provided with in the offgas duct outer wall (5) of below, the opposite side of ground electrode (6) and high-field electrode (8) is equipped with isolation layer (7), discharge channel (9) is formed between two isolation layers (7), power supply (3) connects ground electrode (6), high-field electrode (8) respectively, power supply (3) and ground electrode (6) all ground connection, isolation layer (7) adopts glass steel material, while automobile starting, power supply (3) also starts, ground electrode (6) and high-field electrode (8) energising, tail gas enters from suction port (1), and through ionization, the decomposition reaction of discharge channel (9), the tail gas after process is discharged from air outlet (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510116010.6A CN104791052A (en) | 2015-03-17 | 2015-03-17 | Plasma automobile exhaust treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510116010.6A CN104791052A (en) | 2015-03-17 | 2015-03-17 | Plasma automobile exhaust treatment device |
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| CN104791052A true CN104791052A (en) | 2015-07-22 |
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| CN201510116010.6A Pending CN104791052A (en) | 2015-03-17 | 2015-03-17 | Plasma automobile exhaust treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134340A (en) * | 2015-09-24 | 2015-12-09 | 重庆市科学技术研究院 | Titanium pipe electric purification device for automobile exhaust gas |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101229484A (en) * | 2007-10-29 | 2008-07-30 | 江苏大学 | Corona discharge plasma reactor used for treating vehicle exhaust |
| CN102814109A (en) * | 2012-08-29 | 2012-12-12 | 西安交通大学 | Device for waste gas treatment based on dielectric barrier corona discharge plasmas |
| CN103111167A (en) * | 2013-02-04 | 2013-05-22 | 韩汶冀 | High-voltage plasma purifier |
| CN104162348A (en) * | 2013-05-20 | 2014-11-26 | 孙红梅 | Plasma purifier provided with core-shell porous spherical filtering filling material |
-
2015
- 2015-03-17 CN CN201510116010.6A patent/CN104791052A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101229484A (en) * | 2007-10-29 | 2008-07-30 | 江苏大学 | Corona discharge plasma reactor used for treating vehicle exhaust |
| CN102814109A (en) * | 2012-08-29 | 2012-12-12 | 西安交通大学 | Device for waste gas treatment based on dielectric barrier corona discharge plasmas |
| CN103111167A (en) * | 2013-02-04 | 2013-05-22 | 韩汶冀 | High-voltage plasma purifier |
| CN104162348A (en) * | 2013-05-20 | 2014-11-26 | 孙红梅 | Plasma purifier provided with core-shell porous spherical filtering filling material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134340A (en) * | 2015-09-24 | 2015-12-09 | 重庆市科学技术研究院 | Titanium pipe electric purification device for automobile exhaust gas |
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Application publication date: 20150722 |
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