Patents by Inventor W. Richard Carson

W. Richard Carson 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 and system for the disposal of coal preparation plant waste coal through slurry co-firing in cyclone-fired boilers to effect a reduction in nitrogen oxide emissions
    Patent number: 6152054
    Abstract: A method and system for the use of waste coal fines to reduce nitrogen oxides emissions from a coal-fired cyclone boiler. A coal water slurry including waste coal fines is injected as a co-firing fuel into a cyclone barrel of the cyclone boiler to partially oxidize the coal water slurry in a central portion of the cyclone barrel where injected. This produces a reducing zone having reducing gas species that convert nitrogen oxides to diatomic nitrogen. The coal water slurry can alternatively be injected into the cyclone barrel from a secondary combustion air conduit. The evaporation of the water from the coal water slurry reduces the overall combustion temperature in the cyclone barrel, further reducing the production of nitrogen oxides.
    Type: Grant
    Filed: October 1, 1999
    Date of Patent: November 28, 2000
    Assignee: GE Energy and Environmental Research Corp.
    Inventors: Robert A. Ashworth, W. Richard Carson, Todd A. Melick, Todd M. Sommer
  • Method and system for the disposal of coal preparation plant waste coal through slurry co-firing in cyclone-fired boilers to effect a reduction in nitrogen oxide emissions
    Patent number: 5988081
    Abstract: A method and system for the use of waste coal fines to reduce nitrogen oxides emissions from a coal-fired cyclone boiler. A coal water slurry including waste coal fines is injected as a co-firing fuel into a cyclone barrel of the cyclone boiler to partially oxidize the coal water slurry in a central portion of the cyclone barrel where injected. This produces a reducing zone having reducing gas species that convert nitrogen oxides to diatomic nitrogen. The coal water slurry can alternatively be injected into the cyclone barrel from a secondary combustion air conduit. The evaporation of the water from the coal water slurry reduces the overall combustion temperature in the cyclone barrel, further reducing the production of nitrogen oxides.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: November 23, 1999
    Assignees: Energy & Environmental Research Corporation, Tennessee Valley Authority
    Inventors: Robert A. Ashworth, W. Richard Carson, Todd A. Melick, Todd M. Sommer