Electrochemical catalyst converter

Abstract

The invention provides an electrochemical catalyst converter for removing oxynitrides (NOx), carbon monoxide (CO), hydrocarbons (HCs) and particulate materials (PM) from an exhaust gas. The electrochemical catalyst converter comprises: at least a cell modulate which comprises a cathode, an anode, a membrane electrode group and a heating unit, wherein the membrane electrode group is positioned between the cathode and the anode, the heating unit is embedded in the cell module, and the cathode comprises an oxidation catalyst; a reduction gas input unit connected with one side of the anode and a reduction gas output unit connected with the other side of the anode; a reduction gas cycle pump connected with the reduction gas input unit and the reduction output unit respectively; and an exhaust gas input unit connected with one side of the cathode and an exhaust gas output unit connected with the other side of the cathode, wherein the oxynitrides in the exhaust gas decompose to form nitrogen through electrochemical promotion, and carbon monoxide, the hydrocarbons and the particulate materials form carbon dioxide and water through catalyzing by the oxidation catalyst.

Description

technical field [0001] The present invention relates to an electrochemical catalytic converter (or called an electrochemical catalytic converter), especially an electric converter capable of effectively reducing the content of nitrogen oxides, carbon monoxide, hydrocarbons and particulate matter in exhaust gas, so as to control the emission of exhaust gas. Chemical catalyst converter. Background technique [0002] Fresh and clean air is one of the basic elements of human life. Breathing clean and pollution-free air can ensure the stable and healthy survival of human beings. Although the improvement of science and technology has driven the rapid development of the economy, the exhaust emissions from vehicles and various factories have indeed caused air pollution, which has a great impact on the air quality of human life. Among them, heavy factories and motor vehicles are the main sources of many pollutants. [0003] Taking motor vehicles as an example, although the emission...

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Problems solved by technology

However, in addition to storage of toxic ammonia gas, there is no risk of leakage, and its incomplete reaction will cause secondary pollution; moreover, the selective catalytic reduction system is bulky, and most of them must be equipped with sophisticated sensors for auxiliary control

[0008] In addition, "Electrochemical catalytic reduction cell for the reduction of NOx in an O 2 -containing exhaust emission" discloses a device for removing nitrogen oxides alone, which uses electrochemical catalytic reduction reaction and cooperates with vanadium pentaoxide (V 2 o 5 ) catalyst catalyzes and assists the conversion of nitrogen oxides into nitrogen; the device must be supplied with an external power supply to cause one of the electrochemical cells in the device to operate, which not only consumes energy but also cannot achieve the goal of simultaneously removing harmful gases in the exhaust gas

[0009] In addition, Chinese Patent Application No. 201010232080.5 "Electrochemical Catalytic Converter for Controlling Exhaust Gas Emissions and Power Generation", which is another creative technology of the inventor of this case, discloses a converter that can convert exhaust gas into electrical energy. Convert harmful substances in exhaust gas into non-polluting substances, and achieve the purpose of generating electricity; however, the device must be supplied with fuel to cause a solid oxide fuel cell in the device to operate, so that not only consumes fuel but also when used in motor vehicles A fuel treatment system must be installed, which will increase the fixed and operating costs, and will reduce the service life of the device due to carbon deposition caused by the fuel

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