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    • 16. 发明授权
    • Modification of bifunctional catalyst activity in hydroprocessing
    • 加氢处理双功能催化剂活性的改性
    • US5062943A
    • 1991-11-05
    • US592440
    • 1990-10-04
    • Minas R. ApelianClinton R. Kennedy
    • Minas R. ApelianClinton R. Kennedy
    • C10G47/00
    • C10G47/00
    • The equilibration of a zeolitic hydrocracking catalyst is accelerated by the addition of nitrogen compounds to the hydrocracker feed during the start of cycle (SOC). Addition of the nitrogen compounds reduces the exotherm, indicative of a decrease in the hydrogenation activity of the catalyst consequent upon the addition of the nitrogen. The reduced hydrogenation level decreases hydrogen consumption at this point in the cycle so that units which are hydrogen constrained may be operated under more favorable conditions. In addition, the attainment of equilibrium or lineout conditions is accelerated and yield benefits, particularly in the production of middle distillates are observed.
    • 沸石加氢裂化催化剂的平衡通过在循环开始(SOC)期间向加氢裂化器进料中加入氮化合物来加速。 氮化合物的添加降低了放热,表明随着氮的加入,催化剂的氢化活性降低。 降低的氢化水平降低了循环中此时的氢消耗,使得氢受限的单元可以在更有利的条件下操作。 此外,达到平衡或排水条件得到加速,产量有利,特别是在中间馏分的生产中被观察到。