METHOD OF PURIFYING PYROLYSIS GAS FROM HOMOLOGUES OF ACETYLENE, ETHYLENE AND C, C HYDROCARBONS Russian patent published in 2016 - IPC B01D53/14 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to petrochemical industry, particularly to processes of hydrocarbon pyrolysis gas preparation for further processing, and can be used for purification of pyrolysis gas containing acetylene and ethylene as target components from impurities of their homologues and accompanying hydrocarbons C₃ and C₄. Technical result is achieved in method of purification of pyrolysis gas from acetylene homologues, ethylene and hydrocarbons C₃, C₄ by absorption with kerosene and subsequent desorption thereof, wherein absorbent is first mixed with tert-pyrocatechol in an amount of 0.02-0.1 wt%, absorption is carried out at -10°C, and desorption is carried out while heating to 180°C for 30 minutes.

EFFECT: technical result is an increase in operation efficiency of absorbent.

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