PROCESS FOR OLIGOMERIZATION OF GASOLINE

摘要

A first oligomerization stream is oligomerized over a zeolitic catalyst in a first oligomerization reactor zone to make oligomerate. A heavy oligomerate stream is recovered from the oligomerate and fed to a second reactor zone with zeolitic catalyst operated at a higher temperature than the first oligomerization zone to crack heavy oligomerate down to gasoline range oligomerate.

主权项

1. A process for oligomerization comprising:
passing a first oligomerization feed stream comprising C4 olefins to a first oligomerization reactor zone comprising a first oligomerization catalyst operated at a first temperature to oligomerize C4 olefins in said oligomerization feed stream to produce a first oligomerate stream; separating said oligomerate stream from said first oligomerization reactor zone in a recovery zone to provide a heavy oligomerate stream; passing said heavy oligomerate stream as a second feed stream to a second reactor zone comprising a second catalyst operated at a second temperature that is greater than said first temperature to crack oligomers in said heavy oligomerate stream and produce a second oligomerate stream.