Process for refining crude oil
专利汇可以提供Process for refining crude oil专利检索，专利查询，专利分析的服务。并且PURPOSE: To refine crude oil stably and efficiently at a low cost in an inexpensive facility by separating the naphtha fraction from a crude oil, subjecting the residual fraction to hydrodesulfurization and then to hydrorefining, and distilling the refined fraction to separate it into respective fractions.
CONSTITUTION: The naphtha fraction of a crude oil is separated by distillation in a predistillation column 1 and the naphtha fraction thus separated is introduced into a desulfrization unit 2 to undergo desulfurization. Separately, the residual fraction from which the naphtha fraction has been separated is introduced into a hydrodesulfurization unit 3, where it is hydrodesulfurized in the presence of a catalyst. The fraction thus hydrodesulfurized is fed into a hydrorefining unit 4 to undergo hydrogenative refining. Then, hydrogenatively refined fraction is introduced into an atmospheric distillation column 5, where it is distilled into respective fractions of naphtha, kerosene, gas oil, residual oil, etc., by fractionation. Thus, intermediate tanks can be dispensed with and desulfurization facilities are unified, so that the equipment costs can greatly be reduced.
COPYRIGHT: (C)1992,JPO&Japio，下面是Process for refining crude oil专利的具体信息内容。
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