Patents by Inventor Walter T. Mullen

Walter T. Mullen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for controlling the viscosity of Kraft black liquor
    Patent number: 5472568
    Abstract: An improved method of chemical recovery from kraft black liquor is disclosed in which the heat generated by controlled oxidation of the liquor is utilized to reduce the viscosity and net heating value of the liquor which allows the firing of a more concentrated liquor in the recovery boiler. Net steam recovery is increased for a given black liquor feed rate. Alternatively, the firing of liquor having a higher solids concentration is possible, which increases the throughput of the recovery boiler.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: December 5, 1995
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Walter T. Mullen, Vincent L. Magnotta
  • Combustion of low BTU/high moisture content fuels
    Patent number: 5107777
    Abstract: A process for combusting low B.T.U. high moisture content fuels by enriching the normal process air used in the combustion process.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: April 28, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Walter T. Mullen
  • Combustion of low B.T.U./high moisture content fuels
    Patent number: 4928606
    Abstract: A process for combusting low B.T.U. high moisture content fuels by enriching the normal process air used in the combustion process.
    Type: Grant
    Filed: January 13, 1988
    Date of Patent: May 29, 1990
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Walter T. Mullen
  • Combustion of black liquor
    Patent number: 4857282
    Abstract: A process for combusting black liquor by enriching the normal process air used in the combustion process by the addition of up to 5% oxygen.
    Type: Grant
    Filed: January 13, 1988
    Date of Patent: August 15, 1989
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Walter T. Mullen