Back to results
US 6,602,922 B1Granted
Process for producing C19 minus Fischer-Tropsch products having high olefinicity
AssigneeChevron U.S.A. Inc.
InventorsBurtron H. Davis, Stephen J. Miller
Life of this patent
Estimating the term…
Abstract
A process for increasing the yield of olefinic products from a Fischer-Tropsch unit and increasing the yield of products within the lube and diesel boiling range by use of a potassium promoted iron-based catalyst.
Claims26
A process for increasing the average molecular weight of the product from a Fischer-Tropsch unit comprising:
- (a) contacting a synthesis gas feed stock in a slurry-type Fischer-Tropsch reaction zone with a potassium promoted iron catalyst under slurry-type Fischer-Tropsch reaction conditions, wherein the atomic ratio of iron to potassium in the catalyst is within the range of from about 100 atoms of iron to 3 atoms of potassium to about 100 atoms of iron to 15 atoms of potassium;
- (b) recovering from the Fischer-Tropsch reaction zone a C5 to C19 Fischer-Tropsch product having an olefinity of at least about 60 weight percent;
- and
- (c) oligomerizing under oligomerization conditions at least a portion of the C5 to C19 Fischer-Tropsch product and recovering a oligomerization product from the olgomerization reaction zone having an average molecular weight that is at least 10 percent higher than the C19 minus Fischer-Tropsch product.
1 more element
A method for increasing the olefinicity of a C5 to C19 Fischer-Tropsch product which comprises:
- (a) contacting a synthesis gas feed stock in a slurry-type Fischer-Tropsch reaction zone with a potassium promoted iron catalyst under slurry-type Fischer-Tropsch reaction conditions, wherein the atomic ratio of iron to potassium in the catalyst is within the range of from about 100 atoms of iron to 3 atoms of potassium to about 100 atoms of iron to 15 atoms of potassium;
- and
- (b) recovering from the Fischer-Tropsch reaction zone a C5 to C19 Fischer-Tropsch product having an olefinicity of at least about 60 percent.
Dependencies are inferred from the claim text.