| abstract |
FIELD: chemistry. n SUBSTANCE: invention relates to a method of producing ethylene and electrical energy from natural gas through direct oxidation of natural gas and then feeding the waste gas into an electric power installation. The method involves feeding the initial stream of natural gas to the step for synthesis of ethylene via oxidative condensation of methane, which is carried out in the presence of oxide catalysts at temperature 700°C-950°C, pressure 1-10 atm and molar ratio of methane to oxygen in the interval from 2:1 to 10:1. Further, ethylene, the remaining portion of the gas stream containing unreacted methane and combustible products hydrogen and CO are extracted from the reaction mixture and fed into the electric power installation in which electrical energy and heat are regenerated. Energy, which is released during synthesis of ethylene via oxidative condensation of methane in form of heat content of vapour and other heat carriers, is recycled together with energy generated by the electric power installation, which is powered by natural methane gas which has not reacted in the ethylene synthesis reactor. n EFFECT: method provides economic and technological advantages compared to existing production processes. n 5 cl, 1 dwg |