A method for reducing dust removal electric field couplings, comprising the following steps: selecting a dust removal electric field anode and/or dust removal electric field cathode parameter to reduce a number of electric field couplings. A dust removal electric field anode and/or dust removal electric field cathode size is selected so that the number of electric field couplings is less than or equal to 3. The number of electric field couplings is reduced, electric field energy consumption is low, electric field coupling consumption for an aerosol, water mist, oil mist and loose smooth particulate matter is reduced, and electric field energy is saved

A system for removing dust in air (101) comprises a dust removal system inlet (1011), a dust removal system outlet, and an electric field device (1014). The electric field device (1014) comprises an electric field device inlet (3085), an electric field device outlet (3088), a dust removal electric field cathode (3081), and a dust removal electric field anode (3082). The dust removal electric field cathode (3081) and the dust removal electric field anode (3082) are configured to generate an ionizing dust removal electric field. The electric field device (1014) further comprises an auxiliary electric field unit. The ionizing dust removal electric field comprises a flow channel (3086). The auxiliary electric field unit is configured to generate an auxiliary electric field that is not perpendicular to the flow channel (3086). The system for removing dust in air (101) can effectively remove particles in the air.

Disclosed is an engine exhaust dust removing system and method. The engine exhaust dust removing system comprises an exhaust dust removing system inlet, an exhaust dust removing system outlet and an exhaust electric field device. The engine exhaust dust removing system has a good dust removing effect, and can effectively remove particulate matter from engine exhaust gas.

Disclosed is an engine exhaust dust removing system and method. The engine exhaust dust removing system comprises an exhaust dust removing system inlet, an exhaust dust removing system outlet and an exhaust electric field device. The engine exhaust dust removing system has a good dust removing effect, and can effectively remove particulate matter from engine exhaust gas.

An engine exhaust gas ozone purification method, comprising: mixing a ozone stream and an exhaust stream to react, and removing nitric acid in a reaction product of the ozone stream and the exhaust stream mixture. A gas that has a nitric acid mist is caused to flow through a first electrode (301). When the gas that has the nitric acid mist flows through the first electrode (301), the first electrode (301) charges the nitric acid mist in the gas, and a second electrode (302) applies an attractive force to the charged nitric acid mist, so that the nitric acid mist is moved toward the second electrode (302) until the nitric acid mist adheres onto the second electrode (302). The present engine exhaust gas ozone purification method does not need to add a large amount of urea, and the purification effect is good.

A system and method for purifying engine exhaust by using ozone; the system for purifying engine exhaust by using ozone comprises a reaction field (202), which is used to mix an ozone stream and an exhaust stream for reaction; the system has an excellent purification effect without needing to add a large amount of urea.

An exhaust gas ozone purification method, specifically comprising: enabling a mixing reaction between an ozone stream and an exhaust gas stream, and removing nitric acid from mixed reaction products between the ozone stream and the exhaust gas stream by using an electrocoagulation device. The electrocoagulation device comprises: a first electrode (301) electrifying water spray of nitric acid; and a second electrode (302) applying an attraction force to the electrified water spray. The method can realize the purification of exhaust gas.

An exhaust gas ozone purification method, specifically comprising: enabling a mixing reaction between an ozone stream and an exhaust gas stream, and removing nitric acid from mixed reaction products between the ozone stream and the exhaust gas stream by using an electrocoagulation device. The electrocoagulation device comprises: a first electrode (301) electrifying water spray of nitric acid; and a second electrode (302) applying an attraction force to the electrified water spray. The method can realize the purification of exhaust gas.

Disclosed is a vehicle-mounted exhaust gas and air dedust removal system, comprising an exhaust gas inlet, an air inlet and an electric field device (1021). The vehicle-mounted exhaust gas and air dust removal system is capable of purifying exhaust gas and introduced air simultaneously.

Disclosed is a vehicle-mounted exhaust gas and air dedust removal system, comprising an exhaust gas inlet, an air inlet and an electric field device (1021). The vehicle-mounted exhaust gas and air dust removal system is capable of purifying exhaust gas and introduced air simultaneously.