Natural gas chemical industry is the industry of producing chemical products from natural gas, which is an integral part of fuel chemical industry. Since natural gas and petroleum belong to the hydrocarbon resources buried underground, and sometimes they are symbiotic mineral deposits, and their processing technology and products are closely related to each other, natural gas chemical industry can also be classified as petrochemical industry. Natural gas chemical industry generally includes the purification and separation of natural gas, chemical processing (processing and utilization of methane, ethane, propane and other alkanes contained in it)