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    • 2. 发明授权
    • Hydroprocessing methods and apparatus for use in the preparation of liquid hydrocarbons
    • 用于制备液体烃的加氢处理方法和装置
    • US07354507B2
    • 2008-04-08
    • US10802974
    • 2004-03-17
    • Sridhar GopalakrishnanVincent H. MelquistRafael L. EspinozaDoug S. JackKeith Henry Lawson
    • Sridhar GopalakrishnanVincent H. MelquistRafael L. EspinozaDoug S. JackKeith Henry Lawson
    • C10G65/00
    • C10G65/00C10G2400/04
    • The present invention is generally related towards enhancing the yield and/or cold-flow properties of certain hydrocarbon products, increasing the degree of isomerization in a diesel product and/or increasing the production rate of a diesel product. The embodiments generally include reducing the residence time of lighter hydrocarbon fractions during hydrocracking, thereby decreasing secondary cracking, by various configurations of introducing at least two hydrocarbon feedstreams of different boiling ranges at different entry points in a hydrocracking unit. A method further includes forming a hydrocarbons stream comprising primarily C5+ Fischer-Tropsch hydrocarbon products; fractionating hydrocarbons stream to form at least a wax fraction and an intermediate fraction which serve as separate feedstreams to a hydrocracking unit comprising at least two hydroconversion zones. One embodiment comprises the use of a bifunctional catalyst in one of the hydrocracking zones so as to favor hydroisomerization of hydrocarbons to favor the formation of branched paraffins boiling in the diesel range.
    • 本发明通常涉及提高某些烃产品的产率和/或冷流性质,增加柴油产品中的异构化程度和/或提高柴油产品的生产率。 实施方案通常包括通过在加氢裂化装置的不同入口处引入不同沸程的至少两种烃进料流的各种构型,减少加氢裂化期间较轻烃馏分的停留时间,从而减少二次裂化。 一种方法还包括形成主要包含C 5+费 - 托烃产物的烃物流; 分馏烃流以形成至少蜡馏分和中间馏分,其用作分离的进料流至包含至少两个加氢转化区的加氢裂化单元。 一个实施方案包括在一个加氢裂化区中使用双官能催化剂,以有利于烃的加氢异构化,有利于在柴油范围内沸腾的支链烷烃的形成。