Comprehensive utilization of coal

1, coal gasification is the process of converting coal into combustible gas. At high temperature, coal reacts with steam to obtain gases such as carbon monoxide, H2 and methane, and the generated gases can be used as fuel or chemical raw material gas.

2. Coal liquefaction is the process of converting coal into liquid fuel. Under certain conditions, coal can react with hydrogen to obtain liquid fuel, clean fuel oil and chemical raw materials.

3. Dry distillation of coal is to isolate coal from air, strengthen heat, and make it undergo complex changes to obtain coke, coal tar, coke oven gas, crude ammonia, crude benzene, etc.

Extended data

Historically, coal has been used as an energy source, mainly for burning power generation and/or heating, and also for industrial purposes, such as refining metals or producing fertilizers and many chemical products. As a fossil fuel, the formation of coal is that ancient plants were buried in the ground before decomposition, converted into peat, lignite, sub-bituminous coal, bituminous coal and anthracite.

Hydrocarbons produced by coal act under the pressure and temperature conditions of crustal movement air, producing carbonized fossil minerals, that is, coal is a plant fossil. This involves a long-term biological and geological process.