METHOD OF PRODUCING ETHYLENE FROM NATURAL GAS Russian patent published in 2009 - IPC C07C11/04 C10G15/12 

FIELD: chemistry.

SUBSTANCE: active particles are synthesised on the first stage: in a plasmatron - atomic hydrogen, in a forreactor - methyl radicals, under the effect on natural gas, coming into a pyrolysis reactor, from which ethylene with acetylene impurities is produced, which, without separation from pyrolysis gas, is selectively hydrogenated into ethylene on the next stage in the presence of a catalyst in gaseous phase, with subsequent separation of concentrated ethylene from the hydrogenation products using low temperature rectification method, return of part of methane and hydrogen mixture from the hydrogenation stage to the pyrolysis stage in the forreactor and use of a balance quantity of methane and hydrogen mixture to produce electrical energy or as an end product. Content of methane in the methane and hydrogen mixture, fed into the forreactor, does not exceed 13 wt %.

EFFECT: increased output of ethylene with low energy consumption.

4 cl, 1 ex, 1 dwg