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Patent Searching and Data


Title:
TEMPERATURE CONTROLLED IN SITU WAX PURIFICATION
Document Type and Number:
WIPO Patent Application WO2003006577
Kind Code:
A3
Abstract:
A hydrocarbon wax product from a HCS slurry comprising liquid synthesis product and catalyst particles is purified by circulating the slurry from a synthesis zone with a first temperature through a treatment zone with a second temperature in which a hydrogen-containing treatment gas contacts the slurry. The gas treatment removes impurities from the hydrocarbon wax product and also removes catalyst de-activating species which may be present in the slurry. Purified wax product is separated and removed from the treated slurry via wax withdrawal means. This avoids or minimizes the need for further treating the wax product. Remaining treated slurry may be returned to the synthesis zone.

Inventors:
WITTENBRINK ROBERT JAY
BURNS LOUIS FRANCIS
HOWSMON GREGG JOHNSTON
SAY GEOFFREY RHYS
MAULDIN CHARLES HARRISON
Application Number:
PCT/US2002/018836
Publication Date:
September 12, 2003
Filing Date:
June 14, 2002
Export Citation:
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Assignee:
EXXONMOBIL RES & ENG CO (US)
International Classes:
C07C1/04; C07B61/00; C07C9/14; C07C9/22; C10G2/00; (IPC1-7): C10G2/00
Foreign References:
US5958986A1999-09-28
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