Still And Extractor Patents (Class 202/168)
  • Patent number: 5078974
    Abstract: Apparatus for the manufacture and recovery of alkali-metal tetraorganylborates. A mixed solvent and liquid/liquid contactor configuration is used in the system which aids in the recovery of the product.
    Type: Grant
    Filed: January 29, 1990
    Date of Patent: January 7, 1992
    Assignee: AFF, Inc.
    Inventors: Eugene C. Ashby, Laurence L. Earnhart, Daniel W. Tedder, Jagvir Singh
  • Patent number: 4434028
    Abstract: Method and apparatus for removing oil and other organic constituents from particulate, inorganic-rich mineral solids. The method and apparatus are particularly suitable for removing oil from oil-contaminated drill cuttings. The solids to be treated are transferred into pressure vessel means wherein they are contacted with an extractant which is normally a gas but is under conditions of pressure and temperature to provide the extractant in a fluidic solvent state for the constituents to be removed, whereby the constituents are transferred to the extractant. The extractant containing the constituents is withdrawn from the pressure vessel and depressurized to render it a nonsolvent for the constituents and to form a two-phase system which can then be separated into extractant for repressurizing and recycling with proper handling of the constituents removed.
    Type: Grant
    Filed: April 17, 1981
    Date of Patent: February 28, 1984
    Assignee: Critical Fluid Systems, Inc.
    Inventors: Christopher P. Eppig, Bruce M. Putnam, Richard P. de Filippi
  • Patent number: 4289586
    Abstract: A dirty or otherwise contaminated volatile solvent or other treatment fluid including relatively more volatile non-flammable and relatively less volatile flammable constituents is recovered or reclaimed by boiling it off from its impurities. As the remainder is concentrated, the evaporated vapor becomes increasingly flammable. In a work process, a treatment tank is used for chemically treating work pieces in a volatile treatment fluid which has a liquid phase and a relatively non-flammable heavier-than-air vapor phase. In this process, heat energy is added to the fluid to maintain the upper vapor phase surface at a substantial distance above the upper liquid phase surface in the tank. When the treatment fluid becomes sufficiently contaminated with dirt introduced by the work pieces or otherwise, it must be removed from the tank and replaced with clean treatment fluid.
    Type: Grant
    Filed: October 12, 1979
    Date of Patent: September 15, 1981
    Assignee: Finishing Equipment, Inc.
    Inventor: Winston E. Sabatka
  • Patent number: 4204913
    Abstract: A dirty or otherwise contaminated volatile solvent or other treatment fluid including relatively more volatile non-flammable and relatively less volatile flammable constituents is recovered or reclaimed by boiling it off from its impurities. As the remainder is concentrated, the evaporated vapor becomes increasingly flammable. In a work process, a treatment tank is used for chemically treating work pieces in a volatile treatment fluid which has a liquid phase and a relatively non-flammable heavier-than-air vapor phase. In this process, heat energy is added to the fluid to maintain the upper vapor phase surface at a substantial distance above the upper liquid phase surface in the tank. When the treatment fluid becomes sufficiently contaminated with dirt introduced by the work pieces or otherwise, it must be removed from the tank and replaced with clean treatment fluid.
    Type: Grant
    Filed: April 6, 1978
    Date of Patent: May 27, 1980
    Assignee: Finishing Equipment, Inc.
    Inventor: Winston E. Sabatka
  • Patent number: 4036701
    Abstract: Distillation apparatus for steam distilling of solvents is disclosed in combination with phase separation means which is readily adjustable to accommodate fluids which are either more dense or less dense than water. This is accomplished in the preferred embodiment by attaching a pipe to an appropriate opening in the phase separation means. This permits a readily changed operation from one solvent to another and permits standardization of manufacture to accommodate essentially all water immiscible solvents.
    Type: Grant
    Filed: May 10, 1976
    Date of Patent: July 19, 1977
    Inventors: Byron Jan Clay, Michael Lhotellier Wall, James Robert Cunningham