FIELD: technological processes.
SUBSTANCE: invention relates to hydrotreatment of hydrocarbon flows, in particular to extraction of hydrogen and liquefied petroleum gas (LPG) from hydrotreated flows of hydrocarbons. Hydrogen extraction method involves hydrotreatment of hydrocarbon feed stream in hydrotreatment reactor and separation of obtained hydroprocessed flow into separation section to produce liquid and gaseous separated hydrotreated flows. Liquid separated hydroprocessed stream is stripped to produce gaseous flow of the stripping column. From gaseous separated hydrotreated flow and gaseous flow of stripping column C3+ is absorbed hydrocarbons by contacting with the absorption oil.
EFFECT: higher extraction of hydrogen, higher extraction of LPG and reduced consumption of absorption oil.
10 cl, 3 dwg, 1 tbl, 1 ex
