The exhaust gas emitted by the factory mainly refers to the general term for various pollutant-containing pollutant gases that are discharged into the air during the fuel combustion, production process and production workshop in the factory area. Industrial exhaust gas is also divided into gaseous exhaust gas and particulate exhaust gas. Species. With the development of modern industry and transportation, the amount of substances that are continuously emitted into the atmosphere is increasing, and the types are more and more complicated, causing dramatic changes in the composition of the atmosphere.
The gaseous exhaust gas mainly includes nitrogen-containing organic exhaust gas, sulfur-containing exhaust gas, and hydrocarbon organic exhaust gas. Nitrogen-containing exhaust gas: This type of exhaust gas will cause damage to the air components and change the gas composition ratio. The atmosphere is a mixture of nitrogen, oxygen, carbon dioxide, water vapor, and solid impurity particles. Calculated by volume, under standard conditions, nitrogen accounts for 78.08%, oxygen accounts for 20.94%, argon accounts for 0.93%, and the volume of other gases is negligible. For example, when a volcanic eruption, a large amount of dust and carbon dioxide are ejected into the atmosphere, causing smoke to spread in the volcanic eruption area; large-scale forest fires caused by natural causes such as lightning will also increase the content of carbon dioxide and smoke.
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In industrial production, the combustion of petroleum products is huge, and the nitrogen content in petroleum products is large. The exhaust gas will contain a large amount of nitrogen oxides. If it is discharged into the air, it will increase the content of air nitrogen oxides, which will affect the atmospheric circulation; sulfur-containing exhaust gas : Sulfur-containing exhaust gas will cause direct harm to the living environment. This is because it can form acidic substances when combined with water in the air, causing acid rain. Hydrocarbon organic waste gas: This type of waste gas is collectively called hydrocarbons, and is mainly composed of carbon atoms and hydrogen atoms.
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There are many types of pollutants discharged into the atmosphere by industry, and their properties are complex, including soot and carbon compounds. Transportation: Cars, trains, and ships are the main means of transportation today, and the exhaust gas from coal or oil is also an important pollutant. Living stoves and heating boilers: A large number of civilian living stoves and heating boilers in the city need to consume a large amount of coal. During the combustion of coal, a large amount of dust, carbon monoxide and other harmful substances are polluted to pollute the atmosphere.