Patents by Inventor John V. Dallen

John V. Dallen 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).

  • Separated overfire air injection for dual-chambered furnaces
    Patent number: 5899172
    Abstract: A separated overfire air injection system particularly suited for use in a fossil fuel-fired steam generating power plant and more specifically to a sixpoint separated overfire air tangential firing system employed in such power plants, particularly those embodying dual-chambered furnaces. A method of operating such a fossil fuel-fired steam generating power plant equipped with the sixpoint separated overfire air injection system of the present invention is also disclosed. The separated overfire injection system in accordance with the present invention includes six SOFA windboxes strategically located about the perimeter of the dual-chambered furnace volume so as to be operative to inject separated overfire air into the furnace volume in such a manner as to engage a fireball symmetrically tangential to a circle.
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: May 4, 1999
    Assignee: Combustion Engineering, Inc.
    Inventors: John V. Dallen, Steven B. Fothergill