FIELD: chemistry.
SUBSTANCE: method of simultaneous fractioning and hydroprocession of flow of wide naphtha fraction is proposed. The method includes supply of hydrocarbons flow in temperature range of naphtha boiling, which contains organic compounds of sulphur and hydrogen, into distillation column reactor. In the reactor, the following processes take place simultaneously, i.e. separation of the said naphtha into light low-boiling naphtha and heavy high-boiling naphtha; contact of the said naphtha with hydrodesulphurisation catalyst for selective interaction of organic sulfur compounds in it with the said hydrogen with formation of H2S; isolation of part of the said low-boiling naphtha, in which the aforesaid low-boiling naphtha contains recombinant mercaptans; removal of the said heavier high-boiling naphtha from the said distillation column reactor; fractioning of the said part of light low-boiling naphtha in order to remove its lighter fraction, which, in fact, does not contain mercaptans, from counter-flow reactor before contact of the said lighter fraction with hydrogen in still layer of hydrodesulphurisasion catalyst for reduction of amount of recombinant mercaptans in it.
EFFECT: elaboration of efficient method of simultaneous fractioning and hydroprocession of flow of wide naphtha fraction.
11 cl, 1 dwg
