The vigorous development of the transportation industry has resulted in the annual increase in the price of exhaust gas exhaust gas treatment equipment. The automobile exhaust mainly contains harmful substances such as NO-, hydrocarbons, and CO. These pollutants can cause photochemical reactions in the environment and cause the appearance of photochemical smog. Therefore, it is necessary to adopt appropriate methods to control the automobile exhaust. First, nitrogen oxides The first is to control the emission of N0-, such as motor vehicles, boilers and industrial production. In the automotive and boiler exhaust areas, the most important prevention method is used. At the moment, the vehicle equipment is cleaned. The denitrification of flue gas can be roughly divided into catalytic recovery, liquid absorption, adsorption, and so on. The nitric acid tail gas of many large and medium-sized chemical fertilizer plants in China has also used catalytic recovery denitrification equipment. Second, other harmful gases There are also fluorine-containing exhaust gas, organic exhaust gas, and odorous exhaust gas treatment equipment prices in the atmospheric environment. Fluorine-containing waste gas purification more choice of absorption method, such as water absorption method, alkali absorption method, dry adsorption method. Organic waste gas and odor are very harmful to the atmosphere, and most of them are extremely toxic or carcinogenic substances. Usually, they are treated by physical and chemical methods such as absorption and adsorption, and chemical methods such as catalytic incineration and biological treatment methods. Third, particulate matter Solid particles in the air mainly come from dust on the ground, construction, industrial production, and fuel incineration. Dust generated from the combustion of smoke, dust, and industrial production, such as fuel and other substances, is the primary objective of pollution prevention and control. There are two main methods of control that have been adopted. The first is to change the composition of fuel, improve the incineration method, and improve the utilization of fuel to reduce particulate emissions. For example, hydroelectric power is used instead of thermal power generation. The second is equipment dust removal equipment, which removes particulate matter before it is discharged into the atmosphere to reduce air pollution. Fourth, sulfur oxides The focus of prevention and control of sulfur oxides is S02, and more prevention and control technologies such as fuel desulphurization, desulfurization of incineration process or flue gas desulfurization, and price dispersion and dilution of high stack gas treatment equipment are adopted.
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