What are the categories of coal chemical products?

Coal chemical industry is the main raw material for the production of coal chemical products industry, according to the different production processes and products are mainly divided into coal coking, coal calcium carbide, coal gasification and coal liquefaction of four product chains. Among them, coal coking, coal calcium carbide, coal gasification of ammonia, etc. belongs to the traditional coal chemical industry, coal gasification of alcohol ether fuel, coal liquefaction, coal gasification of olefins can be attributed to the field of modern coal chemical industry. Different varieties of coal are applied to different product chains, coking coal is given priority for coal coking, lignite and bituminous coal with lower coal liquefaction is given priority for coal liquefaction, high-quality and clean coal resources are given priority to be used as fuels for power generation, civil use and industrial furnaces, high sulfur coal and other low-quality coals are mainly used for coal gasification, and anthracite bituminous coal is given priority for fertilizers.