Patent ID: 9150463
Filing Date: 2015-10-06
Classification: C07C

Abstract:
1. A process for treating one aromatic feed stream comprising an aromatic compound and an amount of nitrogen compounds comprising basic organic nitrogen compounds at a first concentration and another aromatic feed stream comprising the aromatic compound, an unsaturated aliphatic compound, water, and an amount of second nitrogen compounds comprising weakly basic nitrogen compounds at a second higher concentration, the method comprising: a) combining the other aromatic feed stream with the one aromatic feed stream to form a combined aromatic feed stream; b) contacting the combined aromatic feed stream of step (a) with an unsaturated aliphatic compound removal material comprising an acidic clay adsorbent to remove at least a portion of the unsaturated aliphatic compounds and reduce at least a portion of basic organic nitrogen compound from the combined aromatic feed stream to form a effluent stream; c) contacting the from step (b) with a nitrogen removal adsorbent comprising an acidic zeolite adsorbent to remove at least a portion of the nitrogen compounds from the combined aromatic feed stream to produce a treated aromatic feed stream; and d) contacting the treated combined aromatic feed stream from step (c) with an ethylene stream in the presence of an alkylation catalyst under alkylation conditions to form an ethylbenzene stream; wherein the aromatic compound comprises benzene and the other aromatic feed stream comprises a benzene recycle stream from a styrene monomer production zone.