Patents by Inventor Denny K. McDonald

Denny K. McDonald 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).

  • Oxy-combustion coal fired boiler and method of transitioning between air and oxygen firing
    Patent number: 8453585
    Abstract: A new and unique boiler and method of transition between air and Oxy-combustion in a coal fired combustion process wherein near pure oxygen may be introduced to the boiler furnace in several locations including directly into the flame through the burner and/or directly into the furnace as nearly pure oxygen, and/or into the recycle flue gas streams to the burners, including both primary and secondary streams.
    Type: Grant
    Filed: April 13, 2009
    Date of Patent: June 4, 2013
    Assignees: Babcock & Wilcox Power Generation Group, Inc., American Air Liquide, Inc.
    Inventors: Bryan B. Stone, Denny K. McDonald, Allan J. Zadiraka, Rajani K. Varagani
  • OXY-COMBUSTION COAL FIRED BOILER AND METHOD OF TRANSITIONING BETWEEN AIR AND OXYGEN FIRING
    Publication number: 20090255450
    Abstract: A new and unique boiler and method of transition between air and Oxy-combustion in a coal fired combustion process wherein near pure oxygen may be introduced to the boiler furnace in several locations including directly into the flame through the burner and/or directly into the furnace as nearly pure oxygen, and/or into the recycle flue gas streams to the burners, including both primary and secondary streams.
    Type: Application
    Filed: April 13, 2009
    Publication date: October 15, 2009
    Inventors: Bryan B. Stone, Denny K. McDonald, Allan J. Zadiraka