2 gasification. Gasification refers to the conversion of industrial or civil fuel as well as chemical synthesis of raw materials.3 cryogenic distillation. Low temperature tar and low temperature coke oven gas can be prepared by low temperature carbonization of coal or oil shale at the temperature of 550 DEG C.4 hydrogenation liquefaction. The coal, the catalyst and the heavy oil are mixed together, and the organic matter in the coal is destroyed at high temperature and high pressure, and the hydrogen is converted into low molecular liquid and gaseous products.
Coal is an important energy source and an important raw material for metallurgical and chemical industry
Coking. In the coal carbonization furnace, air heating, organic matter in coal with the increase of temperature is gradually decomposed, the volatile substances in gaseous or vapor state to escape, as coke oven gas and coal tar, non volatile solid residues for coke. Coke oven gas is a kind of fuel and an important chemical raw material. Coal tar can be used in the production of chemical fertilizers, pesticides, synthetic fiber, synthetic rubber, paints, dyes, pharmaceuticals, explosives, etc.. Coke is mainly used in blast furnace ironmaking and casting, but also can be used to produce nitrogen fertilizer, calcium carbide. Calcium carbide is plastic, synthetic fiber, synthetic rubber and other synthetic chemical products.
