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    • 1. 发明申请
    • MULTI-STEP HYDRODESULFURIZATION PROCESS
    • 多步骤氢化方法
    • WO1996017903A1
    • 1996-06-13
    • PCT/GB1995002731
    • 1995-11-23
    • DAVY PROCESS TECHNOLOGY LIMITEDKOLODZIEJ, Richard, JosephHARRISON, George, EdwinMcKINLEY, Donald, Hugh
    • DAVY PROCESS TECHNOLOGY LIMITED
    • C10G49/00
    • C10G65/04C10G49/007
    • A hydrotreatment process is described for effecting hydrotreatment of a liquid hydrocarbon feedstock (101) containing a mixture of liquid hydrocarbons together with organic sulphurous impurities which comprises: (a) supplying to the first hydrotreatment zone (108) the hydrocarbon feedstock and a hydrogen-containing gas (106) for hydrodesulphurisation of the feedstock; (b) recovering from the first hydrotreatment zone a first intermediate product stream (110) comprising unreacted hydrogen, hydrogen sulphide, and a mixture of hydrocarbons including a liquid first hydrocarbon fraction; (c) contacting the liquid first hydrocarbon fraction with a first stream of desulphurised recycle gas (116) thereby to yield (A) a vaporous mixture (118) comprising unreacted hydrogen, hydrogen sulphide, and a second hydrocarbon fraction comprising relatively more volatile components of the mixture of hydrocarbons and (B) a third liquid hydrocarbon fraction (126) comprising relatively less volatile components of the mixture of hydrocarbons as well as residual sulphurous impurities; (d) supplying to the second hydrotreatment (137, 140, 143) zone material of the third liquid hydrocarbon fraction of step (c) and a mixture of make-up hydrogen-containing gas and desulphurised recycle gas (132) for desulphurisation; (e) recovering from the second hydrotreatment zone a second intermediate product stream (145) comprising unreacted hydrogen, hydrogen sulphide and a desulphurised mixture of hydrocarbons cooling (119) and desulphurising this hydrogen containing stream and recycling this stream to step (c) or step (d).
    • 描述了一种加氢处理方法,用于对含有液态烃混合物的液体烃原料(101)和有机硫化杂质进行加氢处理,其中包括:(a)向第一加氢处理区(108)供应烃原料和含氢的 气体(106)用于原料的加氢脱硫; (b)从第一加氢处理区回收包含未反应的氢,硫化氢和包括液体第一烃馏分的烃的混合物的第一中间产物流(110) (c)使液体第一烃馏分与第一脱硫循环气体流116接触,由此产生(A)包含未反应的氢,硫化氢和第二烃馏分的蒸气混合物(118),所述第二烃馏分包含相对较高挥发性组分 烃的混合物和(B)第三液体烃馏分(126),其包含烃的混合物的相对较少的挥发性组分以及残留的含硫杂质; (d)向步骤(c)的第三液体烃馏分的第二加氢处理区(137,140,​​143)区域材料供给和用于脱硫的补充含氢气体和脱硫循环气体(132)的混合物; (e)从第二加氢处理区回收包含未反应的氢,硫化氢和冷却(119)的脱硫的烃的混合物的第二中间产物流(145),并将该含氢物流脱硫并将该物流再循环到步骤(c)或步骤 (d)中。