Patent ID: 7495139
Filing Date: 2009-02-24
Classification: B01J,C07C,Y02P

Abstract:
1. A method of minimizing alkylation catalyst regeneration comprising: substantially continuously feeding a first input stream comprising a reduced level of catalyst poisons and an alkylating agent to an alkylation system, contacting the first input stream and the alkylating agent with an alkylation catalyst to alkylate the first input stream and to form an output stream and removing the output stream from the alkylation system over a period of time substantially equal to a life of the alkylation catalyst, wherein the alkylation first input stream comprises a first aromatic compound and wherein the alkylation output comprises a second aromatic compound; and contacting a second input stream comprising a first level of catalyst poisons and the first aromatic compound with a cerium promoted zeolite catalyst in the presence of the alkylating agent to reduce the first level of catalyst poisons and form the first input stream having a reduced level of catalyst poisons prior to feeding the input stream to the alkylation system, wherein the reduced level of catalyst poisons is less than the first level of catalyst poisons and the life of the alkylation catalyst is longer than the same alkylation catalyst's life in the absence of contact with the cerium promoted zeolite catalyst.