Introduction to coal chemical industry

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This post was last edited by **Reference Materials** on 2012-6-30 19:41. 【Keywords】 Reference Materials, China Reference Materials Network, China National Reference Materials Center, Beijing Reference Materials Center. Summary: Coal gasification plays an important role in coal chemical industry; it is used to produce various gaseous fuels and represents a clean source of energy that helps improve people’s living standards and contribute to environmental protection； The syngas produced by gasification is a raw material for various products such as synthetic liquid fuels. Direct coal liquefaction, namely coal hydrogenation liquefaction under high pressure, can produce synthetic oil and chemical products. During oil shortages, liquefied coal products will replace current natural oil. An industry that converts coal into gaseous, liquid, and solid products or semi-products through chemical methods, which are then further processed into chemical and energy products. Including coking, calcium carbide chemistry, gasification, etc. As global oil resources continue to decline, coal chemical industry holds broad prospects. The process of converting coal into gaseous, liquid, and solid fuels as well as chemicals through chemical processing, using coal as the raw material. It mainly includes coal gasification, liquefaction, carbonization, as well as tar processing and calcium carbide-acetylene chemical industries. Among the production technologies available in coal chemical industry, coking is the earliest applied process, and it remains an important part of the chemical industry to this day. Coal gasification plays an important role in coal chemical industry; it is used to produce various gaseous fuels and represents a clean source of energy that helps improve people’s living standards and contribute to environmental protection ； The syngas produced by gasification is a raw material for various products such as synthetic liquid fuels. Direct coal liquefaction, namely coal hydrogenation liquefaction under high pressure, can produce synthetic oil and chemical products. During oil shortages, liquefied coal products will replace current natural oil. Coal chemical industry began in the second half of the 18th century, and a complete coal chemical system was established in the 19th century. Entering the 20th century, many organic chemicals derived from agricultural and forestry products were produced using coal as a raw material, and coal chemistry became an important part of the chemical industry. After World War II, the petrochemical industry developed rapidly, and the production of many chemicals shifted from using coal as a raw material to using oil and natural gas, thereby weakening the role of coal-based chemistry in the chemical industry. The chemical structure of the organic matter in coal consists of large molecular structures with aromatic rings as the core units, connected to each other by bridge bonds and containing various functional groups. Through thermal and catalytic processing, coal can be converted into various fuels and chemical products. Coking is the earliest applied method and remains the most important one to this day; its main purpose is to produce coke for metallurgical use, while also generating by-products such as gas, as well as aromatic compounds like benzene, toluene, xylene, and naphthalene. Coal gasification also holds an important role in coal chemical industry; it is used to produce city gas and various fuel gases, as well as syngas ； Processes such as low-temperature carbonization of coal, direct coal liquefaction, and indirect coal liquefaction primarily produce liquid fuels.