Patent ID: 6602922
Filing Date: 2003-08-05
Classification: B01J,C10G

Abstract:
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.