CN102359422A - Method for improving tail gas cleanup by utilizing plasma jet as engine intake - Google Patents
Method for improving tail gas cleanup by utilizing plasma jet as engine intake Download PDFInfo
- Publication number
- CN102359422A CN102359422A CN2011102792035A CN201110279203A CN102359422A CN 102359422 A CN102359422 A CN 102359422A CN 2011102792035 A CN2011102792035 A CN 2011102792035A CN 201110279203 A CN201110279203 A CN 201110279203A CN 102359422 A CN102359422 A CN 102359422A
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- CN
- China
- Prior art keywords
- plasma
- tail gas
- plate
- engine
- plasma jet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000010531 catalytic reduction reaction Methods 0.000 claims abstract description 8
- 238000002485 combustion reaction Methods 0.000 claims abstract description 4
- 210000000515 tooth Anatomy 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 2
- 230000007306 turnover Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 11
- 238000000746 purification Methods 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000004913 activation Effects 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 230000005281 excited state Effects 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 208000018875 hypoxemia Diseases 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The invention provides a novel plasma purification method of engine tail gas. In the method, a low-temperature plasma generating device is arranged between an air filter and an engine so that the traditional engine intake is plasma jet instead of ordinary air flow; and by utilizing the special chemical activation characteristics of plasma, the plasma jet can be involved in the whole tail gas purification process from combustion to catalytic reduction. The plasma generating device can be used for overcoming the defect that severe working conditions, such as high temperature, high voltage, low oxygen and the like, can affect the generation and reaction of plasma in the traditional plasma generating device arranged in an exhaust pipe behind the engine, thus being beneficial to efficient finish of the tail gas purification work.
Description
Said technical field
The present invention relates to engine exhaust emission environmental purification field, especially carry out the method for engine tail gas purification with low-temperature plasma stream.
Background technique
At present, in engine exhaust emission technology such as automobile, use the low-temperature plasma device,, be contained in the outlet pipe behind the motor, participate in the purification of tail gas, obtain certain effect in conjunction with catalysis device.But because outlet pipe postposition and condition are very special, its high temperature, high pressure, hypoxemia, being harmful to plasma jet is the generation and the reaction of the extremely strong species of chemisms such as electronics, ion, excited state molecule, free radicals.The plasma purification technics is used in the motor exhaust environment protection treating inadequately, remained to be found out the better application method.
Summary of the invention
Technological scheme of the present invention is that the low-temperature plasma generating means is preposition, is contained between air-strainer and the engine air inlet tube, after the air process filter cleaner filtration that motor needs; Promptly get into the low-temperature plasma device; These common air excite the electronics that becomes multiple gases immediately, ion, excited state molecule, free radicals etc. through corona, and form plasma jet jointly in the low-temperature plasma device; They get into motor at integral body, participate in participating in NO after burning and the burning
XThe reaction that intensifies with harmful matters such as HC.Can quicken to make harmful nitrogen oxide to be changed to harmless N through catalytic reduction again
2, make harmful HC become harmless CO
2And water.
The invention has the beneficial effects as follows, can be easily the air inlet of motor be become plasma jet by traditional air stream, after catalytic reduction quickens harmful gas is become innocuous gas, accomplish purifying in burning, method is easy.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 is technological scheme figure of the present invention
Fig. 2 is the structural representation of corona pole plate in the low-temperature plasma generating means among Fig. 1.
Specific embodiments
In Fig. 1, when air inlet after air-strainer filters, get into the low-temperature plasma generating means, normal air is through the corona electron bombard, moment becomes the plasma jet that electronics, ion, polar molecule, free radicals etc. are formed.Their chemism is strong, and get in the engine combustion process, and be discharged to participate in the overall process in the outlet pipe combustion reaction and catalytic reduction reaction, since plasma effect, NO
XIncreased activity: NO → NO
2, HC increased activity: C
XH
Y+ O
2→ C
XH
YO
2, when getting into catalyst-assembly, since the catalyst selectivity catalytic reduction, NO
X(NO or NO
2)+C
XH
YO
Z+ O
2→ N
2+ CO
2+ H
2O.
So, harmful NO
XWith HC, NO
2, harmful gas such as CO, end reaction is N
2, CO
2, H
2O class innocuous gas.Accomplish the purification back and enter atmosphere by outlet pipe.
In order to strengthen the generation of plasma jet, before the catalytic reduction reaction device, also can install a cover plasma generator additional, to optimize purifying effect.
In Fig. 2, A, B all are metal plates, and A is a tabula rasa, and B is a tooth plate.A, the alternate equidistance of B plate are arranged, mutually insulated, and B version turnover two ends respectively dash has row's pointed tooth, and two row's pointed tooths all are contracted in the A plate end line.When each logical-(+) of A, B two plates or+during (-) high voltage direct current, the relative A plate of B plate crown produces corona, the air of entering is under the electron bombardment of corona zone, moment forms plasma jet.
In Fig. 1, the high-voltage DC power supply of low-temperature plasma generating means by the generator powered of this car, and boosts through known direct current high-frequency circuit, matches required magnitude of voltage.
Claims (3)
1. an engine exhaust emission combines catalytic reduction device to accomplish the method that purifies with plasma apparatus; It is characterized in that plasma generator; Be contained between air-strainer and the motor; Make the air inlet of motor become plasma jet by traditional air stream, and participate in the overall process combustion reaction and catalytic reduction reaction.
2. method according to claim 1, the power supply that it is characterized in that the low-temperature plasma generating means is by the supply of boosting of this car generator.
3. method according to claim 1 and 2; The low-temperature plasma generating means mainly is that, equidistance alternate by A, B sheet metal arranged and formed; A, B plate mutually insulated; B plate air-flow turnover two ends respectively dash has row's pointed tooth, and two row's pointed tooths all are contracted in the A plate end line, when A, two editions each logical-(+) of B or+the relative A plate of each crown during (-) high voltage direct current on the B plate produces corona.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102792035A CN102359422A (en) | 2011-09-20 | 2011-09-20 | Method for improving tail gas cleanup by utilizing plasma jet as engine intake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102792035A CN102359422A (en) | 2011-09-20 | 2011-09-20 | Method for improving tail gas cleanup by utilizing plasma jet as engine intake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102359422A true CN102359422A (en) | 2012-02-22 |
Family
ID=45584792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102792035A Pending CN102359422A (en) | 2011-09-20 | 2011-09-20 | Method for improving tail gas cleanup by utilizing plasma jet as engine intake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102359422A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050485A (en) * | 2016-08-04 | 2016-10-26 | 广西玉柴机器股份有限公司 | Plasma system of natural gas engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2373572Y (en) * | 1999-06-11 | 2000-04-12 | 赵思宾 | Clarifier for purifying vehicle organic matter burned waste gas |
| CN1648425A (en) * | 2004-12-02 | 2005-08-03 | 南京大学 | Integral Low Temperature Plasma Catalytic Reactor for Exhaust Gas Purification |
| CN101757842A (en) * | 2010-03-16 | 2010-06-30 | 仲立军 | Low temperature plasma waste gas cleaning device |
-
2011
- 2011-09-20 CN CN2011102792035A patent/CN102359422A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2373572Y (en) * | 1999-06-11 | 2000-04-12 | 赵思宾 | Clarifier for purifying vehicle organic matter burned waste gas |
| CN1648425A (en) * | 2004-12-02 | 2005-08-03 | 南京大学 | Integral Low Temperature Plasma Catalytic Reactor for Exhaust Gas Purification |
| CN101757842A (en) * | 2010-03-16 | 2010-06-30 | 仲立军 | Low temperature plasma waste gas cleaning device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050485A (en) * | 2016-08-04 | 2016-10-26 | 广西玉柴机器股份有限公司 | Plasma system of natural gas engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DD01 | Delivery of document by public notice |
Addressee: Yin Xieqian Document name: Notification of Passing Preliminary Examination of the Application for Invention |
|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120222 |