Patents Assigned to Wellman Furnaces Limited
  • Oil purification
    Patent number: 5135616
    Abstract: Apparatus for oil purification comprises a packed column for contacting sour oil with steam from a boiler, a gravity separator for separating the oil and water, a coalescer for coalescing the recovered oil, and a condenser for separating the lighter fraction from the column.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: August 4, 1992
    Assignee: Wellman Furnaces Limited
    Inventors: David Nicholson, John M. Forester