Patents by Inventor Van Albert Kent

Van Albert Kent 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).

  • Process for selectively removing sulfur dioxide
    Patent number: 4834959
    Abstract: Gas feed streams containing sulfur dioxide such as flue gas streams are first contacted with an aqueous solution of inorganic sulfites and bisulfites having a pH range from about 2 to about 6.5 to remove a minor amount of sulfur dioxide. The same gas stream is then contact with a second aqueous solution of sulfites and bisulfites having a pH range from about 7.0 to about 12.5. Alkali metal hydroxide or ammonium hydroxide solution is added to the liquid inlet of the second contactor and the solution of the second contactor is pumped to the liquid inlet of the first contactor.
    Type: Grant
    Filed: September 10, 1986
    Date of Patent: May 30, 1989
    Assignee: The Dow Chemical Company
    Inventors: Van Albert Kent, Larry H. Kirby, William R. Behr