METHOD FOR COMBINED PYROLYSIS OF ETHANE RAW MATERIAL AND LIQUEFIED HYDROCARBONS Russian patent published in 2020 - IPC C10G9/00 C10G45/26 C10G21/20 

FIELD: petrochemical industry.

SUBSTANCE: invention relates to petrochemical industry, specifically to methods of producing ethylene by pyrolysis of hydrocarbon material. Invention relates to a method for combined pyrolysis of ethane raw material and liquefied hydrocarbons in the presence of water vapor with weight ratio of raw material: water vapor equal to 0.3–0.4 at 800–850 °C. Weight ratio of ethane raw material and liquefied hydrocarbons is maintained within 75–95:5–25, and water vapor is additionally added dimethylisopropanolamine, dimethylethanolamine, diethylamine, diethanolamine, monoethanol amine or mixtures thereof in amount of 0.0001–0.0005 wt% of pyrolysis stock, wherein the liquefied hydrocarbons used are propane, butane or mixtures thereof.

EFFECT: providing high stable output of ethylene at combined pyrolysis of ethane and liquefied hydrocarbons (propane, butane or their mixtures), expansion of raw material base and reduction of the process of coke formation.

1 cl, 1 tbl, 6 ex