Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Reexamination Certificate
2003-04-01
2009-12-22
Popovics, Robert James (Department: 1797)
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
C210S791000, C210S799000, C210S108000, C210S252000, C210S335000, C210S333010, C210SDIG009
Reexamination Certificate
active
07635435
ABSTRACT:
A method and apparatus for separating immiscible liquids in a dispersion containing an aqueous liquid and at least one dispersed non-aqueous liquid by passing the dispersion through a series of absorbents, preferably polymeric. The direction of the flow through the absorbent is periodically changed. The period required before a change of the flow direction is established by the differential pressure. There is a gradual increase in the differential pressure across the absorbents which indicates a blockage due to viscous oil and/or solids. The product produced by the method and the apparatus of the invention is a polished non-aqueous phase and a polished aqueous phase both having low contaminant levels. In a preferred embodiment when solids are also present in the dispersion, a solids stream is also recovered.
REFERENCES:
patent: 3558482 (1971-01-01), De Young
patent: 3847821 (1974-11-01), Krueger
patent: 4059511 (1977-11-01), Musha et al.
patent: 4145280 (1979-03-01), Middelbeek et al.
patent: 4220544 (1980-09-01), McGrew
patent: 4497707 (1985-02-01), Anderson
patent: 4591441 (1986-05-01), Sakai
patent: 5229015 (1993-07-01), Keep et al.
patent: 5239040 (1993-08-01), Kozlowski
patent: 5331079 (1994-07-01), Kozlowski
patent: 6015502 (2000-01-01), Dzhragatspanvan et al.
patent: 7297279 (2007-11-01), Johnson et al.
patent: 7416667 (2008-08-01), Benachenou et al.
patent: 2004/0112823 (2004-06-01), Benachenou et al.
patent: 2005/0035037 (2005-02-01), Lindsey et al.
patent: 2006/0231510 (2006-10-01), Benachenhou
patent: 2007/0251876 (2007-11-01), Krogue et al.
patent: 2008/0041796 (2008-02-01), Ruprecht
patent: 2008/0105619 (2008-05-01), Benachenou et al.
patent: 2008/0237152 (2008-10-01), Benachenhou
patent: 2009/0039021 (2009-02-01), Benachenou et al.
patent: 1 418 806 (1975-12-01), None
patent: 2 083 370 (1982-03-01), None
patent: WO 02/20115 (2002-03-01), None
patent: WO 2004087286 (2004-10-01), None
COP-System FAQ List; publication date unknown; downloaded from www.Separatech.com on Sep. 18, 2008; 15 pages.
Further Advances in Produced Water De-Oiling Utilizing a Technology That Removes and Recovers Dispersed Oil in Produced Water 2 Microns and Larger; M.J. Plebon, Marc Saad, Serge Fraser; Earth (Canada) Corporation; Montreal, Quebec Canada, 20 pages; Publication Date Unknown.
Ogilvy Renault LLP
Popovics Robert James
Separatech Canada Inc.
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