METHOD OF PARALLEL HYDROTREATING (VERSIONS), HYDROTREATING PLANT Russian patent published in 2001 - IPC

FIELD: petroleum processing and petrochemistry. SUBSTANCE: first raw hydrocarbon material stream and hydrogen-rich recycling gas stream are fed into first reactor. First stream coming out of reactor is separated into first hydrogen- rich gaseous stream and first hydrotreated product stream. The former and second raw hydrocarbon material stream are fed into second reactor. Second stream coming out of the second reactor is separated into second hydrogen-rich gaseous stream and second hydrotreated product stream. Fresh hydrogen stream is added to the second hydrogen-rich gas stream to form hydrogen-rich recycling gas stream, which is compressed and fed into the first reactor. EFFECT: enhanced process efficiency. 19 cl, 3 dwg, 1 tbl