Device and method for treating automobile exhaust with air plasma

Abstract

The invention relates to a device for treating automobile exhaust with an air plasma. The device comprises a high-voltage direct-current power supply and two insulating plates, wherein the two insulating plates are disposed oppositely; one insulating plate is provided with at least one exhaust inlet; the other insulating plate is provided with at least one exhaust outlet; a grounding electrode and a plurality of conductive tubes are disposed between the two insulating plates; the grounding electrode is connected with a grounding end of the high-voltage direct-current power supply; the plurality of conductive tubes are connected with a high-voltage end of the high-voltage direct-current power supply; the plurality of conductive tubes are annularly distributed; and each conductive tube is provided with a plurality of steel needles along the length direction. The invention also relates to a method for treating the automobile exhaust with the air plasma. According to the device and the method, a large treatment space can be obtained, the device can be rapidly mounted on an exhaust pipe of an automobile, the automobile exhaust is treated conveniently at any time in any place, the vehicle-mounted effect can be realized, the automobile exhaust is efficiently decomposed and the treatment energy consumption is low.

Description

technical field [0001] The invention relates to a device and method for treating automobile tail gas with air plasma. Background technique [0002] In recent years, low-temperature plasma physics and applications have become an important science and engineering with global influence, which has a huge impact on the development of high-tech economy and the transformation of traditional industries. For example, with the rapid development of electronic communications, about one-third of microelectronic devices are processed by plasma technology; 90% of plastic packaging materials must be treated and modified by low-temperature plasma. Scientists predict that there will be breakthroughs in low-temperature plasma science and technology in the 21st century. It is estimated that the potential market of low-temperature plasma technology in the fields of semiconductor industry, polymer film, material corrosion protection, plasma electronics, plasma synthesis, plasma metallurgy, plasm...

AI Technical Summary

Problems solved by technology

Among them, the three-way catalytic converter is an internationally recognized mainstream technology that can greatly reduce the pollutants emitted by gasoline vehicles. However, vehicles using three-way catalytic converters must use unleaded gasoline and require that the air-fuel ratio of the engine can be accurately controlled. The application of this type of converter is limited

For vehicle diesel engines, since the particulate matter in the exhaust needs to be oxidized, and the treatment of nitrogen oxides needs to be reduced in order to meet the high standard emission requirements, the NH3-SCR system is mainly used to reduce nitrogen oxides at this stage. substances, but the use of this system often has the problem of catalyst sulfur poisoning

Therefore, with the increasingly stringent emission standards of automobile exhaust, catalytic conversion technology and NH3-SCR technology can no longer meet the development needs of future high-tech automobiles

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