Patents by Inventor Charles J. Drummond

Charles J. Drummond 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).

  • Nox control for high nitric oxide concentration flows through combustion-driven reduction
    Patent number: 4878442
    Abstract: An improved method for removing nitrogen oxides from concentrated waste gas streams, in which nitrogen oxides are ignited with a carbonaceous material in the presence of substoichiometric quantities of a primary oxidant, such as air. Additionally, reductants may be ignited along with the nitrogen oxides, carbonaceous material and primary oxidant to achieve greater reduction of nitrogen oxides. A scrubber and regeneration system may also be included to generate a concentrated stream of nitrogen oxides from flue gases for reduction using this method.
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: November 7, 1989
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: James T. Yeh, James M. Ekmann, Henry W. Pennline, Charles J. Drummond