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1. (WO2002000578) CONVERSION OF REFINERY C5 PARAFFINS INTO C4 AND C6 PARAFFINS

Pub. No.:    WO/2002/000578    International Application No.:    PCT/US2001/019697
Publication Date: Jan 3, 2002 International Filing Date: Jun 19, 2001
IPC: B01J 23/652
B01J 35/00
C10G 45/58
C10G 59/00
Applicants: CHEVRON U.S.A. INC.
Inventors: CHEN, Cong-Yan
O'REAR, Dennis, J.
BRUNDAGE, Scott, R.
Title: CONVERSION OF REFINERY C5 PARAFFINS INTO C4 AND C6 PARAFFINS
Abstract:
A process for preparing a C4- product stream and a C¿6+? product stream is disclosed. The process involves contacting a C5 containing paraffinic feedstock with a catalyst that includes a hydrogenation/dehydrogenation catalyst and an olefin metathesis catalyst under conditions which dehydrogenate the paraffins to olefins. The olefins are then metathesized and rehydrogenated to provide a product stream. A C4- fraction a C6+ fraction can each be isolated from the product stream. The C4- fraction can be used, for example, in an alkylation reaction to provide compounds useful in gasoline compositions. Unconverted C5 paraffins can be recycled. The C6+ fraction can be used, for example, as solvents. Alternatively, they can be isomerized to form gasoline additives, or can be converted to aromatic compounds via reforming, for example, using conventional reforming techniques, preferably using the AROMAX?TM¿ process or traditional rheniforming conditions.