Abstract: A process is presented for the production of linear alkylbenzenes. The process includes contacting an aromatic compound with an olefin in the presence of a selective zeolite catalyst. The catalyst includes two zeolites combined to improve the linearity, and to produce detergent grade LAB. The two zeolites are selected to limit skeletal isomerization while producing a desired 2-phenyl content for the LAB.
Type:
Grant
Filed:
December 16, 2009
Date of Patent:
July 5, 2011
Assignee:
UOP LLC
Inventors:
Mark G. Riley, Deng-Yang Jan, Stephen W. Sohn, Jaime G. Moscoso
Abstract: In some embodiments, methods of producing monoolefins include contacting an olefin stream with a polar solvent to extract a highly unsaturated hydrocarbon from the olefin stream, followed by contacting the polar solvent with a hydrogenation catalyst in the presence of hydrogen at conditions effective to hydrogenate the highly unsaturated hydrocarbon to a monoolefin. The monoolefin then desorbs from the polar solvent and enters the purified olefin stream, allowing the polar solvent to be recycled. In other embodiments, monoolefin production systems include an extraction-hydrogenation zone for performing the extraction and hydrogenating steps in situ. In alternative embodiments, the hydrogenation zone is disposed downstream from the extraction zone.
Type:
Grant
Filed:
November 13, 2003
Date of Patent:
November 28, 2006
Assignee:
Chevron Phillips Chemical Company LP
Inventors:
Tin-Tack Peter Cheung, Marvin M. Johnson