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    • 6. 发明授权
    • Process for reducing benzene content in gasoline
    • 降低汽油中苯含量的方法
    • US5120890A
    • 1992-06-09
    • US636354
    • 1990-12-31
    • J. W. Adriaan SachtlerR. Joe Lawson
    • J. W. Adriaan SachtlerR. Joe Lawson
    • C10G29/20
    • C10G29/205
    • A process is disclosed for reducing benzene and toluene content in light gasoline streams comprising benzene or benzene and toluene but comprising substantially no other aromatic-hydrocarbons. The light gasoline streams may be prepared by distillation of full boiling range gasoline streams from catalytic reforming or fluidized-bed catalytic cracking units. High alkylating agent to benzene ratios are utilized in the presence of a solid alkylation catalyst to achieve a benzene conversion of 70% of more in a single pass through the reaction zone. Alkylating agent is simultaneously injected into the alkylation zone at two or more separate injection points to minimize undersirable side reactions. The alkylation product may be recovered and blended with other gasoline components to produce automotive fuel which is low in benzene content and high octane in rating.
    • 公开了一种用于在包含苯或苯和甲苯的轻汽油流中降低苯和甲苯含量但不包含其它芳族烃的方法。 轻汽油流可以通过从催化重整或流化床催化裂化装置蒸馏全沸程汽油流来制备。 在固体烷基化催化剂的存在下使用高烷基化剂与苯的比例,以在通过反应区的单程中达到70%以上的苯转化率。 烷基化剂在两个或更多个分离的注射点同时注入烷基化区,以最小化不利的副反应。 可以回收烷基化产物并与其他汽油组分混合以产生苯含量低和辛烷值高的汽车燃料。