Patents Assigned to Ineos Fluor Holdings Limited
  • Hydrogen fluoride recovery process
    Patent number: 6555086
    Abstract: Processes for separating and recovering hydrogen fluoride from a gaseous mixture of an organic compound and hydrogen fluoride are disclosed. The processes include contacting the gaseous mixture with a solution of an alkali metal fluoride in hydrogen fluoride, separating a gas phase depleted in hydrogen fluoride and containing the organic compound from a liquid phase, and recovering hydrogen fluoride from the liquid phase.
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: April 29, 2003
    Assignee: Ineos Fluor Holdings Limited
    Inventors: Paul Nicholas Ewing, Charles John Shields, Robert Elliott Low
  • Apparatus and method for reducing residual solvent levels
    Patent number: 6521022
    Abstract: Apparatus and methods for reducing residual solvent levels in extracted biomass that is contaminated with HFC solvent that includes sparging the biomass extract with a solvent stripping gas such as air or nitrogen are disclosed. Apparatus for carrying out the method include a vessel (12;25) containing extract (26) and a source of the gas. The source may be in the form of a moveable, hollow wand (27) having a sparging gas outlet; or a fixed gas inlet (30) for bubbling the gas through the extract (26).
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: February 18, 2003
    Assignee: Ineos Fluor Holdings Limited
    Inventors: Stuart Corr, Paul A. Dowdle, Robert E. Low, Frederick Thomas Murphy, James David Morrison
  • Refrigerant compositions
    Patent number: 6495060
    Abstract: A composition comprising (A) 1,1,2,2,3-pentafluoropropane(CF2HCF2CFH2) and (B) at least one hydrofluorocarbon selected from the group consisting of 1,1,1,3,3-pentafluoropropane (CF3CH2CF2H) and 1,1,1,2,2,3,3,4,4-nonafluorobutane (CF3CF2CF2CF2H) is described. The composition is useful as a refrigerant and may be used in chillers as a replacement for refrigerant R-11.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: December 17, 2002
    Assignee: Ineos Fluor Holdings Limited
    Inventors: Richard L. Powell, Stuart Corr, Frederick T. Murphy, James D. Morrison
  • Production of hydrofluoroalkanes
    Patent number: 6437201
    Abstract: An improved process for the manufacture of CF3CHF2 by contacting 1,2-dichloro-1,1,2-trifluoroethane (CClF2CHClF) or 1-chloro-1,1,2,2-tetrafluoroethane (CHF2CClF2) or mixtures of CF3CHCl2 and CClF2CHClF or mixtures of CF3CHClF and CHF2CClF2 with HF in the presence of a Cr2O3 catalyst prepared by pyrolysis of ammonium dichromate, the reaction being conducted under controlled conditions whereby the production of CF3CHF2 is maximized, and the formation of chloropentafluoroethane (CF3CClF2) and other perhalo derivatives is minimized. The subject hydrogen-containing compound is useful as a blowing agent, propellant, refrigerant, fire extinguishing agent, or sterilant carrier gas.
    Type: Grant
    Filed: April 24, 1997
    Date of Patent: August 20, 2002
    Assignee: Ineos Fluor Holdings Limited
    Inventors: Paul Nicholas Ewing, Richard Llewellyn Powell, Michael Anthony Davies, Christopher John Skinner
  • Preparation of fluorine-containing organic compounds
    Patent number: 6407297
    Abstract: Preparation of a fluorine-containing organic compound by reacting a haloalkene with hydrogen fluoride wherein both the fluorine-containing organic compound and the haloalkene separately form azeotropes with hydrogen fluoride and wherein the haloalkene/hydrogen fluoride azeotrope is more volatile than the fluorine-containing organic compound/hydrogen fluoride azeotrope.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: June 18, 2002
    Assignee: Ineos Fluor Holdings Limited
    Inventor: Paul Nicholas Ewing