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PROCESS FOR MAKING HIGH OCTANE GASOLINE WITH REDUCED BENZENE CONTENT BY BENZENE ALKYLATION AT HIGH BENZENE CONVERSION
PROCESS FOR MAKING HIGH OCTANE GASOLINE WITH REDUCED BENZENE CONTENT BY BENZENE ALKYLATION AT HIGH BENZENE CONVERSION
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机译:在高苯转化率下通过苯烷基化还原苯含量制备高辛烷值汽油的方法
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摘要
pA process for the alkylation of a benzene-containing refinery stream such as reformate with light refinery olefins which is capable of achieving high benzene conversion levels operates in a fixed bed of an MWW zeolite catalyst, preferably MCM- 22, in single pass mode in the liquid phase at a relatively low to moderate temperatures with pressure maintained at a value adequate to ensure subcritical operation. High levels of benzene conversion with conversions of at least 90% and higher, e.g. 92% or 95% or even higher are achievable. A high octane product is produced, comprising mono-, di- and tri-alkylbenzenes with lesser levels of the tetra-substituted products. By operating with staged olefin injection, the end point of the alkylation product can be maintained at a low value while, at the same time, achieving high levels of benzene and olefin conversion./p [WO2010104581A2]
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