Patents by Inventor Paul W. Breaux, deceased

Paul W. Breaux, deceased 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).

  • Scale-free process for purifying concentrated alkali metal halide brines containing sulfate ions as an impurity
    Patent number: 4747917
    Abstract: A process for reducing sulfate ion concentrations in an alkali metal halide brine to be electrolyzed in an electrolytic cell comprises feeding the alkali metal halide brines to a reaction zone containing a slurry of gypsum crystals having a concentration of at least 5 weight percent of solids to form a brine-containing slurry. An aqueous solution of a brine soluble calcium salt is admixed with the brine-containing slurry in an amount sufficient to reduce the sulfate ion concentration to a desired level. The brine-containing slurry is agitated at a pumping velocity of at least about 1.0 meters per second to release solution supersaturation by gypsum crystal formation.
    Type: Grant
    Filed: March 2, 1987
    Date of Patent: May 31, 1988
    Assignee: Olin Corporation
    Inventors: Don E. Reynolds, Paul W. Breaux, deceased, Emily J. Reed