Patents Represented by Attorney Davis S. Zachry

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  • Modified dry limestone process for control of sulfur dioxide emissions
    Patent number: 3976747
    Abstract: A method and apparatus for removing sulfur oxides from flue gas comprise cooling and conditioning the hot flue gas to increase the degree of water vapor saturation prior to passage through a bed of substantially dry carbonate chips or lumps, e.g., crushed limestone. The reaction products form as a thick layer of sulfites and sulfates on the surface of the chips which is easily removed by agitation to restore the reactive surface of the chips.
    Type: Grant
    Filed: June 6, 1975
    Date of Patent: August 24, 1976
    Assignee: The United States of America as represented by the United States Energy Research and Development Administration
    Inventors: Correll C. Shale, William G. Cross