Patent ID: 7781632
Filing Date: 2010-08-24
Classification: C07C,Y02P

Abstract:
1. An integrated process for producing detergent range alkylbenzenes from a feedstock predominantly comprising C 5 and C 6 paraffins, the process comprising: a) subjecting the feedstock to dehydrogenation conditions to provide a dehydrogenated product that comprises C b) selectively hydrogenating at least a portion of the dehydrogenated product of step a to reduce diene concentration; c) reacting at least a portion of the dehydrogenated product having been subjected to the selective hydrogenation of step b under dimerization or metathesis condition to provide a detergent range olefin product comprising C d) separating by distillation a refined olefin fraction comprising C e) alkylating benzene with at least a portion of the refined olefin fraction under alkylation conditions including a stoichiometric excess of benzene to olefin to provide an alkylation effluent comprising alkylbenzenes and benzene; and f) separating benzene from at least a portion of the alkylation effluent and recycling at least a portion of the separated benzene to step e, wherein the detergent range olefin product of step c contains benzene and non-benzene aromatic compounds and at least a portion of the detergent range olefin product is contacted with a sorbent to selectively sorb the non-benzene aromatic compounds and provide detergent range olefin product having a reduced aromatic compound concentration for step e.