A dust removal method for engine exhaust gas includes the steps of using an exhaust gas ionization dust removal electric field to gather particles in the exhaust gas, and using same to charge an exhaust gas electret element (205). The exhaust gas electret element (205) is close to or is provided at an outlet of an exhaust gas electric field device (1021). The dust removal method for engine exhaust gas can efficiently treat the engine exhaust gas and exhaust gas emissions.

An engine exhaust dust removal system includes an exhaust dust removal system inlet, an exhaust dust removal system outlet and an exhaust electric field device. The engine exhaust dust removal system has a good dust removal effect and is able to effectively remove particulate matters from the engine exhaust.

An engine exhaust dust removal system includes an exhaust dust removal system inlet, an exhaust dust removal system outlet and an exhaust electric field device. The engine exhaust dust removal system has a good dust removal effect and is able to effectively remove particulate matters from the engine exhaust.

An exhaust system that includes a catalytic converter, selective catalytic reduction system, a muffler and, for certain applications, a diesel particulate filter that each include at least one filter that has an electric heating element, a metallic coating and a plurality of metal rods extending therethrough. The combination of elements are configured to heat the internal housings of the exhaust system and disrupt the direction of flow of exhaust gases which contain harmful toxic gases and pollutants and aid in removing and/or reducing said toxic gases and pollutants.

An air dust removal system (101) and method, comprising a dust removal system inlet, a dust removal system outlet, and an electric field device. The electric field device comprises an electric field device inlet (1011), an electric field device outlet (1012), a dust removal electric field cathode (10142), and a dust removal electric field anode (10141). The dust removal electric field cathode (10142) and the dust removal electric field anode (10141) are used to generate an ionizing dust removal electric field. The present air dust removal system (101) and method may effectively remove particulate matter from the air.

An engine tail gas ozone purifying system and method. The engine tail gas ozone purifying system comprises reaction fields (220, 202) used for mixture reaction of an ozone stream and a tail gas stream. A large amount of urea does not need to be added and the purification effect is good.

An exhaust gas dust removal system, comprising a dust removal system inlet, a dust removal system outlet and an electric field apparatus, the electric field apparatus comprising an electric field apparatus inlet, an electric field apparatus outlet, a dust removal electric field cathode and a dust removal electric field anode, the dust removal electric field cathode and the dust removal electric field anode being used for producing an ionising dust removal electric field. A dust collection area of the dust removal electric field anode is larger than a discharge area of the dust removal electric field cathode, so that an asymmetric electrode attraction force is produced between the electrodes, to reduce electric field couplings.

An exhaust gas dust removal system, comprising a dust removal system inlet, a dust removal system outlet and an electric field apparatus, the electric field apparatus comprising an electric field apparatus inlet, an electric field apparatus outlet, a dust removal electric field cathode and a dust removal electric field anode, the dust removal electric field cathode and the dust removal electric field anode being used for producing an ionising dust removal electric field. A dust collection area of the dust removal electric field anode is larger than a discharge area of the dust removal electric field cathode, so that an asymmetric electrode attraction force is produced between the electrodes, to reduce electric field couplings.

Abstract: An air dust removal system (101), comprising a dust removal system inlet, a dust removal system outlet, and an electric field device (1014). The electric field device (1014) comprises an electric field device inlet (1011), an electric field device outlet, a dust removal electric field cathode (10142) and a dust removal electric field anode (10141), the dust removal electric field cathode (10142) and the dust removal electric field anode (10141) being used for generating an ionizing dust removal electric field. The dust removal electric field anode (10141) comprises a first anode portion (101412) and a second anode portion (101411), the first anode portion (101412) being close to the electric field device inlet (1011), the second anode portion (101411) being close to the electric field device outlet, and at least one cathode support plate (10143) being provided between the first anode portion (101412) and the second anode portion (101411). The air dust removal system (101) is able to effectively remove particulate matters in the air.

An air dust removing method, comprising the follow steps: providing an electret element (205) in a position without dust in an electric field when an ionization dust removing electric field has a power-on driving voltage; when the ionization dust removing electric field has no power-on driving voltage, using the electret element (205) to absorb particulate matters in the air.