ADVANCED HYDROCARBON REFINERY GAS PROCESSING METHOD Russian patent published in 2015 - IPC C07C2/04 C07C2/56 C07C5/00 C07C9/06 C07C11/04 C10L1/06 C10G9/00 

FIELD: oil and gas industry.

SUBSTANCE: invention is related to advanced processing method of hydrocarbon refinery gas of one or more oil refineries that includes multistage purification of gases represented by the mix of refinery gases of the same type from different process installations, their separation in mass-transfer apparatus at several stages oriented for production of ethylene, hydrogen, high-octane number components of benzene and compressed fuel gases. At that upon amine treatment the ethane-containing fraction is sent to the stage of compressing, drying and purification from O₂, As, Hg, NO_x and other impurities generated in process of pyrolysis, drying and low-temperature separation into deethanised gas delivered for production of hydrogen, ethane fraction sent to pyrolysis, ethylene used as a marketable product and hydrocarbons C₃ and higher, which are sent to separation of reflux fraction, at that thermal decomposition products are returned to the stage beginning.

EFFECT: usage of this invention allows using refinery hydrocarbon gas in different process installations.

1 dwg, 2 ex