CN105134340A - Titanium pipe electric purification device for automobile exhaust gas - Google Patents
Titanium pipe electric purification device for automobile exhaust gas Download PDFInfo
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- CN105134340A CN105134340A CN201510621411.7A CN201510621411A CN105134340A CN 105134340 A CN105134340 A CN 105134340A CN 201510621411 A CN201510621411 A CN 201510621411A CN 105134340 A CN105134340 A CN 105134340A
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- titanium
- pipe
- plasma reactor
- power supply
- purification pipe
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Abstract
The invention discloses a titanium pipe electric purification device for automobile exhaust gas. The device comprises a titanium purification pipe, a plasma reactor and an inversion power supply, wherein the titanium purification pipe is mounted at an automobile exhaust pipe part; the plasma reactor is arranged in the titanium purification pipe; the current input end of the plasma reactor is connected with the output end of the inversion power supply; the inversion power supply is connected with a 12 V power supply or a 24 V power supply of an automobile; direct currents are converted into alternating currents through the inversion power supply, and after voltage boosting and rectification, high-voltage direct currents are output; the plasma reactor has an electrostatic precipitation process function. According to the invention, the better effect of removing pollutants in the automobile exhaust gas by using a plasma technology is realized, and the plasma purification technology has a better application prospect in the actual process of removing dust in the automobile exhaust gas.
Description
Technical field
The present invention relates to purifying vehicle exhaust field, particularly relate to a kind of vehicle exhaust titanium pipe electric depurant.
Background technique
Along with the quickening of the high speed development of China's economic and the level of urbanization, living standards of the people improve constantly, and the vehicle guaranteeding organic quantity of China increases rapidly, and by by the end of June, 2015, national vehicle guaranteeding organic quantity reaches 2.71 hundred million.In a lot of cities of China, automobile pollution has become the one of the main reasons affecting air quality, wherein clearly includes the emphasis that the hydrocarbon (HC) of Environmental capacity, carbon monoxide (CO), nitrogen oxide (NOx) and exhaust gas particulate (PM) are monitoring and research in.
Although the application of the new technologies such as turbosupercharging in recent years, common rail injection, VVT makes the pollutant emission of automobile greatly reduce, but meet China's five-stage of increasingly stringent, the 6th stage emission regulation, except improving further except emission controls by improving combustion technology, it is so an important link that the investigation and application of exhaust gas aftertreatment techniques is appointed.At present three-element catalytic and particle disposal etc. are mainly contained to the post-processing technology of exhaust, but all also there is certain problem.
Summary of the invention
The present invention is intended at least solve the technical problem existed in prior art, especially innovatively proposes a kind of vehicle exhaust titanium pipe electric depurant.
In order to realize above-mentioned purpose of the present invention, the invention provides a kind of vehicle exhaust titanium pipe electric depurant, it comprises: titanium purification pipe, plasma reactor, inverter;
Described titanium purification pipe is installed on automobile exhaust pipe position, in described titanium purification pipe, plasma reactor is set, described plasma reactor current input terminal connects inverter output terminal, described inverter connects automobile 12V or 24V power supply, by inverter, DC inversion is passed through boosting again for exchanging, after over commutation, high voltage direct current exports, and described plasma reactor carries out the process function of electrostatic precipitation.
Described vehicle exhaust titanium pipe electric depurant, preferably, use the corona molybdenum filament of titanium purification pipe and titanium purification pipe inside center, described inverter comprises: transformer and rectifier;
Described transformer one end connects power supply, and the described transformer the other end connects rectifier input, and described rectifier output end connects plasma reactor.
Described vehicle exhaust titanium pipe electric depurant, preferably, described plasma reactor is molybdenum filament, and described molybdenum filament is arranged on titanium purification pipe axial position as discharging electrode.
Described vehicle exhaust titanium pipe electric depurant, preferably, described titanium purification pipe is titanium alloy pipe.
Described vehicle exhaust titanium pipe electric depurant, preferably, described titanium purification pipe is installed on silencing apparatus front end or the rear end of automobile exhaust pipe, can purify PM2.5.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
The pollutant that the present invention uses plasma technique to remove in automobile exhaust has good effect, in actual vehicle exhaust dedusting, and, plasma for purification technology has good application prospect.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is general illustration of the present invention;
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " longitudinal direction ", " transverse direction ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In describing the invention, unless otherwise prescribed and limit, it should be noted that, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
As shown in Figure 1, the invention provides a kind of vehicle exhaust titanium pipe electric depurant, it comprises: titanium purification pipe, plasma reactor, inverter;
Described titanium purification pipe is installed on automobile exhaust pipe position, in described titanium purification pipe, plasma reactor is set, described plasma reactor current input terminal connects inverter output terminal, described inverter connects automobile 12V or 24V power supply, by inverter, DC inversion is being passed through boosting for exchanging, after over commutation, high voltage direct current exports, and described plasma reactor carries out the process function of electrostatic precipitation.
Described vehicle exhaust titanium pipe electric depurant, preferably, use the corona molybdenum filament of titanium purification pipe and titanium purification pipe inside center to carry out purification run, described inverter comprises: transformer and rectifier;
Described transformer one end connects power supply, and the described transformer the other end connects rectifier input, and described rectifier output end connects plasma reactor.
Described vehicle exhaust titanium pipe electric depurant, preferably, described plasma reactor is molybdenum filament, and described molybdenum filament is arranged on titanium purification pipe axial position as discharging electrode.Described molybdenum filament two ends are fixed by stoneware pipe fixing frame, and described stoneware pipe fixing frame is through titanium purification pipe.
Described vehicle exhaust titanium pipe electric depurant, preferably, described titanium purification pipe is titanium alloy pipe.
Described vehicle exhaust titanium pipe electric depurant, preferably, described titanium purification pipe is installed on silencing apparatus front end or the rear end of automobile exhaust pipe, can purify PM2.5.
In any gas that kelvin temperature is non-vanishing, the ionization of total some atoms of existence, they are accelerated acquisition energy in the electric field of external source in a certain way, when the ionization potential of its energy higher than gas atom, ionization will be caused and produce ion and electronics, thus forming the molecular aggregates of grain such as electronics, ion, atom, molecule and free radicals.
Plasma cleaning gas is difference to some extent according to the difference of vehicle emission component, and in motor vehicle exhaust emission, inorganic matter and organic components have tens kinds, the major pollutants that wherein content is maximum mainly HC, CO, NOx and PM particulate.As electron energy > 10eV in plasma, and electron energy be greater than tail gas molecular chemistry key in conjunction with energy time, the active ion of high energy directly can be broken down into monatomic molecule, when electron energy < 10eV time, oxidation reaction plays a part main.Therefore, the energy of active particle and the bond energy of gas very large on the impact purified.Table 1 represents common vehicle exhaust active particle bond energy table.
The energy of table 1 active particle and gas bond energy table
Note: bond energy 1eV=1.602 × 10
-19j
Automobile exhaust, after action of plasma, produces OH, HO, O, O that a series of oxidability is extremely strong
3deng Strong oxdiative material.The meeting of these active substances is effective is CO by contamination transform such as HC, NOx, the PM in vehicle exhaust
2and H
2o etc.
1) HC purification mechanism:
2HC+5O→2CO
2+2H
2O
HC+3OH→CO
2+2H
2O
HC+O
3→CO
2+H
2O
2) CO purification mechanism:
CO+O→CO
2
CO+2OH→CO
2+H
2O
3CO+O
3→3CO
2
3) purification mechanism of NO:
NO+2O·→NO
2
NO+2OH·→NO
2+H
2O
NO+HO
2·→NO
2+OH·
3NO+O
3·→3NO
2
4) PM purification mechanism:
2CO+2O→2CO
2
C+4OH→CO
2+2H
2O
3C+2O
3→3CO
2
2C+2NO
2→N
2+2CO
2
For the purification of PM, except a series of chemical reaction, its in the electric field charged and deposition are also important reasons.In electric field, particulate charged a kind of is that the absorption of electric field intermediate ion is charged, another kind of then be charged due to the collision diffusion of ion, but is electric-field charge mostly.When gas flow is through plasma, the Charge particle with opposed polarity just produces deposition respectively to the electrode movement of opposed polarity due to the effect of electric field force, thus the ion in tail gas (example) is purified.
Plasma reactor, high-frequency and high-voltage power supply and control system.Fig. 1 indicates the overall structure of plasma exhaust gas treatment device, and the tail gas that motor car engine produces is discharged through plasma exhaust gas treatment device.
When DC high-voltage is added in cylinder electrode and discharging electrode center by plasma device, form coronal discharge, electronics and the gas atom in the electric field with certain speed collide, and when the energy with electronics reaches excitation level, just make gas atom ionize.Meanwhile, when electronics and ion impact, atom and atomic collision all cause atomic ionization, are oxidized, the chemical reaction of the series of complex such as decomposition, thus reduce the discharge of gas pollutant.
This plasma device is installed in series in automobile exhaust system, power source is connected during work, on electrode, formed the high pressure of volt up to ten thousand by rectification and transformer, in device, form electric field, carry out purified treatment again to the exhaust contaminant after three-element catalytic process.
The present invention adopts a regular price gasoline car as research object, if diesel-oil vehicle effect is more obvious, vehicle main information and key instrument equipment are as shown in table 2 and table 3.
Table 2 vehicle main information
| Project | Information |
| Class of vehicle | M1 |
| Engine power | 69kW |
| Engine displacement | 1.4L |
| Drive pattern | Preposition forerunner |
| Distance travelled | 60743㎞ |
Table 3 key instrument equipment
| Device name | Equipment model | Manufacturer |
| Environmental test chamber | Nonstandard | Germany IMTECH |
| Chassis dynamometer | 4100 | Precious gram of the U.S. |
| System for testing discharge | MEXA7200LE | Japan HORIBA |
3.2 testing program
This is under different front devices, compares the effect under this plasma processing apparatus no electric circuit and "on" position in hot situation respectively.
As can be seen from test result, at plasma processing apparatus after energising plays a role, pollutant quality in automobile exhaust reduces significantly, and the amplitude that THC, CO, NOx reduce reaches 10.4%, 26.5% and 20.4% respectively, tentatively reaches corresponding technique effect.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (5)
1. a vehicle exhaust titanium pipe electric depurant, is characterized in that, comprising: titanium purification pipe, plasma reactor, inverter;
Described titanium purification pipe is installed on automobile exhaust pipe position, in described titanium purification pipe, plasma reactor is set, described plasma reactor current input terminal connects inverter output terminal, described inverter connects automobile 12V or 24V power supply, by inverter, DC inversion is passed through boosting again for exchanging, after over commutation, high voltage direct current exports, and described plasma reactor carries out the process function of electrostatic precipitation.
2. vehicle exhaust titanium pipe electric depurant according to claim 1, is characterized in that, use the corona molybdenum filament of titanium purification pipe and titanium purification pipe inside center, described inverter comprises: transformer and rectifier;
Described transformer one end connects power supply, and the described transformer the other end connects rectifier input, and described rectifier output end connects plasma reactor.
3. vehicle exhaust titanium pipe electric depurant according to claim 1, it is characterized in that, described plasma reactor is molybdenum filament, and described molybdenum filament is arranged on titanium purification pipe axial position as discharging electrode.
4. vehicle exhaust titanium pipe electric depurant according to claim 1, it is characterized in that, described titanium purification pipe is titanium alloy pipe.
5. vehicle exhaust titanium pipe electric depurant according to claim 1, is characterized in that, described titanium purification pipe is installed on silencing apparatus front end or the rear end of automobile exhaust pipe, can purify PM2.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510621411.7A CN105134340A (en) | 2015-09-24 | 2015-09-24 | Titanium pipe electric purification device for automobile exhaust gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510621411.7A CN105134340A (en) | 2015-09-24 | 2015-09-24 | Titanium pipe electric purification device for automobile exhaust gas |
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| Publication Number | Publication Date |
|---|---|
| CN105134340A true CN105134340A (en) | 2015-12-09 |
Family
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| CN201510621411.7A Pending CN105134340A (en) | 2015-09-24 | 2015-09-24 | Titanium pipe electric purification device for automobile exhaust gas |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673139A (en) * | 2016-03-21 | 2016-06-15 | 东北电力大学 | Automobile exhaust treatment device and method based on dielectric barrier discharge plasma |
| CN107288718A (en) * | 2016-04-13 | 2017-10-24 | 东北林业大学 | Automobile exhaust purifier |
| CN113544364A (en) * | 2018-10-22 | 2021-10-22 | 上海必修福企业管理有限公司 | Exhaust gas treatment system and method |
| CN115236147A (en) * | 2022-06-28 | 2022-10-25 | 浙江缘森生态环境科技有限公司 | Gas content monitoring device for automobile exhaust and using method |
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Application publication date: 20151209 |