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1. (WO2003054113) SLURRY HYDROCARBON SYNTHESIS WITH EXTERNAL HYDROISOMERIZATION IN DOWNCOMER REACTOR LOOP

Pub. No.:    WO/2003/054113    International Application No.:    PCT/US2002/031746
Publication Date: Jul 3, 2003 International Filing Date: Oct 4, 2002
IPC: B01J 8/00
B01J 8/22
C10G 2/00
C10G 45/66
C10K 3/04
Applicants: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
Inventors: MART, Charles, John
WITTENBRINK, Robert, Jay
CLARK, Janet, Renee
FEELEY, Jennifer, Schaefer
Title: SLURRY HYDROCARBON SYNTHESIS WITH EXTERNAL HYDROISOMERIZATION IN DOWNCOMER REACTOR LOOP
Abstract:
A slurry Fischer-Tropsch hydrocarbon synthesis process for synthesizing liquid hydrocarbons from synthesis gas, in a hydrocarbon synthesis reactor, also hydroisomerizes the synthesized hydrocarbons in one or more external downcomer reactor hydroisomerizing loops outside of the reactor, but which are a part of the synthesis reactor. A monolithic catalyst is used for the hydroisomerization, and slurry circulation between the synthesis reactor and the one or more hydroisomerization loops is achieved, at least in part, by density-difference driven hydraulics created by removing gas bubbles from the slurry passed into the loop. Preferably, catalyst particles are also removed before the slurry contacts the monolithic hydroisomerization catalyst.