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    • 20. 发明授权
    • Catalyst hydrotreating and dewaxing process
    • 催化剂加氢处理和脱蜡工艺
    • US4913797A
    • 1990-04-03
    • US296929
    • 1989-01-12
    • Kenneth R. AlbinsonSadi MizrahiDaniel J. Neuman
    • Kenneth R. AlbinsonSadi MizrahiDaniel J. Neuman
    • C10G65/04
    • C10G65/043
    • The present invention is directed to a cascade catalytic hydrotreating/dewaxing process, wherein a hydrocarbon feedstock containing waxy components is treated. The hydrotreating phase precedes the dewaxing phase in order to remove contaminants, such as nitrogen and sulfur, from the feedstock to prolong the life of the catalyst used in the subsequent dewaxing step. A conventional hydrotreating catalyst is used. The dewaxing catalyst is a Zeolite Beta catalyst. The cascade process is conducted with or without interstage gas separation. The treatment occurs in the same or in separate reactors. The ratio of hydrotreating catalyst to dewaxing catalyst is greater than 1:2. This sequence of treatments enhances distillate yields and lowers processing and capital costs.
    • 本发明涉及级联催化加氢处理/脱蜡方法,其中处理含有蜡质组分的烃原料。 加氢处理阶段在脱蜡阶段之前,以从原料中除去诸如氮和硫的污染物,以延长随后脱蜡步骤中所用催化剂的寿命。 使用常规的加氢处理催化剂。 脱蜡催化剂是沸石β型催化剂。 级联过程是在有或没有级间气体分离的情况下进行的。 处理发生在相同或单独的反应器中。 加氢处理催化剂与脱蜡催化剂的比例大于1:2。 这种处理顺序增强了馏出物产率,降低了加工和资本成本。