Chemistry: fischer-tropsch processes; or purification or recover – Including regeneration of catalyst
Reexamination Certificate
2006-02-21
2006-02-21
Parsa, J. (Department: 1621)
Chemistry: fischer-tropsch processes; or purification or recover
Including regeneration of catalyst
C518S700000, C518S720000
Reexamination Certificate
active
07001928
ABSTRACT:
Methods and apparatus for improving the efficiency and effectiveness of in situ reduction of a Fischer-Tropsch catalyst slurry. The preferred embodiments of the present invention are characterized by a system that utilizes a co-feed of carbon monoxide along with the reducing gas into a reduction vessel maintained at an elevated temperature. As the metal oxide reduces to the active Fischer-Tropsch metal, the carbon monoxide acts as a poison to hydrogenolysis and reduces the loss of liquid from the slurry and the production of methane. The carbon monoxide is generally in parts-per-million quantities and will achieve the desired results in quantities less than 5,000 ppm, preferably less than 2,000 ppm.
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Conley & Rose, P.C.
ConocoPhillips Company
Parsa J.
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