CRUDE OIL RECTIFICATION PROCESS Russian patent published in 1998 - IPC

FIELD: petroleum processing. SUBSTANCE: method includes heating crude oil in heat exchangers, then in furnace, and introducing it into complex rectification column equipped by side stripping sections. From the top of column, gasoline fraction is run off, kerosene and diesel fractions are tapped off as side distillates through stripping sections, and distillation residue is mazut. Into the bottoms of column and stripping sections, evaporating agent is continuously fed. Method is distinguished by that, streams of non-heated crude oil and of that heated in the heat exchangers are fed into the section of column between the kerosene fraction outlet and inlet for crude oil stream heated in furnace. EFFECT: increased productivity and yield of target products. 1 dwg , 1 tbl