Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Reexamination Certificate
2003-01-21
2010-10-19
Drodge, Joseph W (Department: 1797)
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
C100S045000, C100S048000, C100S071000, C100S073000, C100S110000, C100S116000, C210S742000, C210S771000, C210S772000, C210S774000, C210S780000
Reexamination Certificate
active
07815808
ABSTRACT:
A pressure-filter is disclosed along with its peripheral equipment that permit the automatic controlled operation of the filter for extracting liquids from a fluid liquid/solid slurry and for the formation of a substantially dry filter cake. The efficiency of the filter apparatus is increased by the use of hot gas as a material for treating the cake within the filter for extracting the liquids as filtrate. The hot gas may be hot air, hot inert gas, steam, or combinations thereof in controlled sequences. The filter is adapted to be able to operate under vacuum or elevated pressure and at elevated temperatures.
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Benesi Steve C.
Costelloe Patrick J.
DeJoseph Daniel
Drodge Joseph W
FLSmidth A/S
Pile Aaron M.
Wasson George W.
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