Patent ID: 7781631
Filing Date: 2010-08-24
Classification: C07C,Y02P

Abstract:
1. An integrated process for producing detergent range alkylbenzenes from a paraffinic feedstock predominantly comprising C 5 and C 6 paraffins and oxygenated compounds, the process comprising: a) contacting the paraffinic feedstock with a liquid extractant comprising at least one of alcohol and diol having 1 to 3 carbon atoms per molecule and a minor amount of water under extraction conditions to provide a deoxygenated feedstock having a reduced concentration of oxygenated compounds and a spent extractant; b) regenerating at least a portion of the spent extractant to provide at least a portion of the liquid extractant; c) dehydrogenating at least a portion of the deoxygenated feedstock in a dehydrogenation zone and recovering therefrom a dehydrogenated product comprising C d) reacting at least a portion of the dehydrogenated product of step c under dimerization or metathesis condition to provide a detergent range olefin product comprising C e) alkylating benzene with at least a portion of the detergent range olefin product 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 d 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).