Patents by Inventor Herbert W. Spencer

Herbert W. Spencer 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).

  • Flue gas desulfurization
    Patent number: 4571330
    Abstract: Systems for desulfurization of a flue gas containing fly ash including formation of a dry powder in a spray dryer absorber resulting from reaction of an alkaline aqueous feed and the flue gas. The dry powder is collected and a specifically selected fraction is recycled to a feed preparation subsystem for inclusion in the aqueous feed. Selective recycle is based on physical or chemical properties and, for example, large diameter and dense particles provide enhanced reagent utilization compared to smaller and less dense particles.
    Type: Grant
    Filed: September 29, 1983
    Date of Patent: February 18, 1986
    Assignee: Joy Manufacturing Company
    Inventors: Henry V. Krigmont, Harold H. Haaland, Ronald J. Triscori, Herbert W. Spencer, III, Jay L. Stern