Patents by Inventor Charles T. Lewis, Jr.

Charles T. Lewis, Jr. 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).

  • Sulfuric acid catalyzed alkylation process
    Patent number: 4209656
    Abstract: A process for alkylating isoparaffin hydrocarbon with olefin hydrocarbon in the presence of a sulfuric acid alkylation catalyst wherein hydrocarbon effluent from an alkylation reaction zone is treated in the liquid phase with bauxite or similar adsorbent for removing acid alkyl sulfates, neutral alkyl sulfate and other corrosive species, wherein treated alkylation effluent is flashed at reduced pressure in indirect heat exchange contact with alkylation reaction mixture in said alkylation reaction zone for refrigerating said reaction mixture, and wherein flashed vapors and unflashed liquid are fractionated for recovery of isoparaffin recycle and alkylated hydrocarbon product.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: June 24, 1980
    Assignee: Texaco Inc.
    Inventors: Gerald F. Prescott, Charles T. Lewis, Jr.
  • Converting reactive impurities in isobutane charge stream with catalyst phase in sulfuric acid alkylation
    Patent number: 4180696
    Abstract: An alkylation process wherein isoparaffin hydrocarbons are alkylated with olefin hydrocarbons in the presence of an alkylation catalyst comprising H.sub.2 SO.sub.4 to yield alkylated hydrocarbons suitable for use in motor fuels. Such process includes an isoparaffin pretreatment step wherein isoparaffin charge is contacted with spent alkylation catalyst to remove contaminants from the isoparaffin which are reactive with sulfuric acid under alkylation conditions.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: December 25, 1979
    Assignee: Texaco Inc.
    Inventors: Charles T. Lewis, Jr., Gerald F. Prescott