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    • 8. 发明授权
    • Two-stage fluid bed regeneration of catalyst with shared dilute phase
    • 具有共同稀释相的催化剂的两阶段流化床再生
    • US5198397A
    • 1993-03-30
    • US797678
    • 1991-11-25
    • Michael F. Raterman
    • Michael F. Raterman
    • B01J8/26C10G11/18
    • B01J8/26C10G11/182
    • A process and apparatus for multi-stage fluidized bed regeneration of spent FCC catalyst in a single vessel. At least two isolated relatively dense phase fluidized beds are disposed beneath a common dilute phase region. Spent catalyst discharged into a primary regeneration stage is regenerated to produce flue gas and partially regenerated catalyst, which preferably overflows into the second stage. Flue gas and entrained catalyst from each fluidized bed are processed in two trains of separation means, preferably cyclones. The inlets of each train are disposed above the isolated fluidized beds, and are effectively separated although sharing an open dilute phase region.
    • 用于在单个容器中废催化裂化催化剂多阶段流化床再生的方法和装置。 至少两个分离的相对致密的相流化床设置在公共稀相区域的下方。 排出到初级再生阶段的废催化剂被再生,以产生烟气和部分再生的催化剂,其优选地溢出到第二阶段。 来自每个流化床的烟气和夹带的催化剂在两个分离装置的列车中进行处理,优选旋风分离器。 每个列车的入口设置在分离的流化床之上,并且有效地分离,尽管共享开放的稀相区。