Liquid purification or separation – Processes – Separating
Reexamination Certificate
2005-05-03
2005-05-03
Prince, Fred G. (Department: 1724)
Liquid purification or separation
Processes
Separating
C210S791000, C518S705000
Reexamination Certificate
active
06887390
ABSTRACT:
Methods for producing clean liquid/wax products from a slurry used in a Fischer-Tropsch reactor are disclosed. In general, one embodiment of the present invention comprises a solid/liquid filtration system having a filter medium comprising a substrate and a filter cake deposited on the substrate, wherein the filter cake is generated by deposition of solids from the slurry. The thickness of the filter cake can be maintained within a desired range by controlling the slurry velocity and/or the pressure differential across the filter medium. This invention relates to a method of operation of such filtration system which increases filtration cycle time and improved filtrate quality resulting in very low solid content in filtrate.
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Espinoza Rafael L.
Jack Doug S.
Mohedas Sergio R.
Odueyungbo Oluwasei A.
Ortego, Jr. James Dale
Conley & Rose, P.C.
ConocoPhillips Company
Prince Fred G.
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