The direct raw materials of basic organic chemical industry include hydrogen, carbon monoxide, methane, ethylene, acetylene, propylene, aliphatic hydrocarbons with carbon four or more, benzene, toluene, xylene, ethylbenzene, etc. Cracked gas, refinery gas, and coal gas from crude oil, petroleum fractions, or low-carbon alkanes can be separated and processed to make aliphatic hydrocarbon raw materials for different purposes; reformed gasoline from catalytic reforming, pyrolysis gasoline from hydrocarbon cracking As well as coal tar from coal dry distillation, aromatic hydrocarbon raw materials can be separated; appropriate petroleum fractions can also be directly used as raw materials for some products; other low-carbon alkanes other than methane can be separated from wet natural gas; from coal gasification and natural gas, refining Synthesis gas can be produced by steam reforming or partial oxidation of plant gas, petroleum fractions or crude oil; acetylene can be produced from calcium carbide produced from coke, or from natural gas and naphtha cracking. In addition, raw materials can also be obtained from agricultural and forestry by-products.
