GAS PROCESSING AND GAS CHEMICAL COMPLEX Russian patent published in 2019 - IPC C10G5/00 B01D53/00 C07C7/00 

FIELD: oil and gas industry.

SUBSTANCE: gas processing and gas-chemical complex refers to processing of natural hydrocarbon gases with high content of nitrogen and can be used in gas industry under conditions of its intensive development. Natural gas is fed to the gas processing plant, successively purified from undesirable impurities, dried and subjected to low-temperature fractionation to obtain methane, ethane and a wide fraction of light hydrocarbons, wherein methane after compression is directed in form of commercial fuel gas to consumers, for own needs and / or natural gas liquefaction plant, ethane is used as raw material of pyrolysis plant of gas-chemical plant to produce ethylene, directed to production of commercial product of gas-chemical plant, including production of polyethylene, and / or other consumers, and methane-hydrogen fraction, which is divided into methane and hydrogen: methane is supplied in the form of commercial fuel gas to consumers and / or for own needs, part of hydrogen is directed to ammonia synthesis plant of ammonia and mineral fertilizer production plant, and other part – after preliminary preparation for production of commercial product of gas-chemical plant, in particular, to preparation of polymerization raw materials, wherein gas processing plant additionally includes nitrogen recovery unit and helium production unit, note here that nitrogen is fed to ammonia synthesis plant of ammonia and mineral fertilizer plant.

EFFECT: obtaining a wide range of commercial products with simultaneous reduction of environmental pollution by reduction of gases into atmosphere.

17 cl, 3 tbl, 1 dwg