Chemistry: fischer-tropsch processes; or purification or recover – Including regeneration of catalyst – Solvent utilized
Reexamination Certificate
2005-11-22
2008-05-20
Parsa, J. (Department: 1621)
Chemistry: fischer-tropsch processes; or purification or recover
Including regeneration of catalyst
Solvent utilized
C518S709000, C518S715000, C502S022000, C502S038000, C502S044000
Reexamination Certificate
active
07375143
ABSTRACT:
Embodiments of the invention relate to processes and apparatus for the washing and recovery of metal-containing catalyst solids in a form suitable for reclamation. More specifically, a catalyst recovery process comprises removing an organic residue with a washing medium from a metal-containing catalyst solids, recovering washed solids, and treating the washed solids under oxidative conditions to form non-reactive solids. The treatment oxidative conditions may be effective to convert the metal(s) into an oxide form and/or may facilitate the removal of remaining organic residue from the washed solids. The treatment of the washed solids may comprise calcination. In some embodiments, the metal-containing catalyst solids may be recovered from a slurry stream, and the process further comprises passing the slurry stream though a separation unit to obtain a catalyst-enriched retentate slurry. In some embodiments, the organic residue comprises a hydrocarbon wax, and the solid catalyst is a hydrocarbon synthesis particulate catalyst.
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Belt Barbara A.
Fjare Kristi A.
Goodwin Ralph T.
Kopponen Sara I.
Levitt Brian J.
Conley & Rose, P.C.
ConocoPhillips Company
Parsa J.
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