C.sub.4 /C.sub.5 olefin skeletal isomerization process
AssigneeChevron U.S.A. Inc.
InventorsStephen J. Miller, John H. Shinn
Life of this patent
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Abstract
A C.sub.4 and/or C.sub.5 normal olefin isomerization process using a catalyst which contains SM-3 produces high yields of C.sub.4 and/or C.sub.5 iso-olefins.
Claims16
An isomerization process comprising contacting a normal C.sub.4 and/or C.sub.5 olefin containing feedstock with a catalyst comprising SM-3 at isomerization conditions sufficient to produce an isomerized product enriched in C.sub.4 and/or C.sub.5 iso-olefins relative to the feedstock.
An integrated olefin isomerization process comprising:
- a) pretreating a normal C.sub.4 and/or C.sub.5 olefin containing feedstock to produce a purified stream containing less than about 200 ppm water, less than about 50 ppm total oxygenates and less than about 40 ppm organic nitrogen;
- b) contacting the purified stream with a catalyst comprising greater than about 50% by weight of SM-3 at isomerization conditions sufficient to produce an isomerized product enriched in C.sub.4 and/or C.sub.5 iso-olefins relative to the feedstock.
An isomerization process comprising contacting a feedstock which contains normal C.sub.4 and/or C.sub.5 olefins with a catalyst containing SM-3 having the substantial absence of a platinum-group metal at a temperature in the range of 200.degree. C. and 600.degree. C. and a WHSV of less than 5 hr.sup.-1 to produce an isomerized product enriched in C.sub.4 and/or C.sub.5 iso-olefins relative to the feedstock.
Dependencies are inferred from the claim text.