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    • 4. 发明授权
    • Means for and methods of deasphalting low sulfur and hydrotreated resids
    • 低硫和加氢处理残渣脱沥青的方法和方法
    • US5242578A
    • 1993-09-07
    • US824289
    • 1992-01-23
    • James L. TaylorJeffrey J. KolstadWilliam I. Beaton
    • James L. TaylorJeffrey J. KolstadWilliam I. Beaton
    • B01J19/00C10G67/04
    • B01J19/00C10G67/049
    • A refining process uses a two or four stage solvent separator coupled to receive an incoming feedstream of low sulfur resid and a solvent. In the preferred two stage separator, the mixture at the top of the first separator stage is fed to the second stage separator via a heat exchanger. The mixture at the bottom of the first stage separator includes resins and asphaltenes which are fed to a hydrotreater and then, in turn, to a fractionator. The output from the bottom of this fractionator can be fed back to the resid feedstream of the first stage separator for recycled separation. The material at the top of the second stage separator is fed back through the heat exchanger where it helps heat the mixture fed from the top of the first to the second stage separator, this feedback recovers the solvent for reuse in the first stage. The material settling to the bottom of the second stage separator is fed into a catalytic cracker or processed elsewhere.
    • 精炼方法使用两级或四级溶剂分离器,其耦合以接收低硫渣油和溶剂的进料进料流。 在优选的两级分离器中,通过热交换器将第一分离器塔顶部的混合物送入第二级分离器。 第一级分离器底部的混合物包括被加入到加氢处理器中的树脂和沥青质,然后进入分馏塔。 该分馏器底部的输出可以反馈到第一级分离器的残渣进料流中,以便循环分离。 第二级分离器顶部的材料通过热交换器反馈,其中它有助于加热从第一级分离器顶部进料的混合物,该反馈在第一级中回收溶剂以供再利用。 沉积到第二级分离器底部的材料进料到催化裂化器中或在其他地方处理。