Patents by Inventor Gail L. Gray

Gail L. Gray 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).

  • Naphtha hydrotreating process with sulfur guard bed having controlled bypass flow
    Patent number: 11124710
    Abstract: A naphtha hydrotreating process involves the use of a sulfur guard bed (SGB) with a controlled bypass which allows for control of the sulfur in the feed to a downstream processing unit. The SGB is installed on the light ends stripper bottoms stream in a naphtha hydrotreating unit.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: September 21, 2021
    Assignee: UOP LLC
    Inventors: Steven B. Philoon, Patrick J. Bullen, Stanley J. Frey, Gail L. Gray, Dean E. Rende
  • NAPHTHA HYDROTREATING PROCESS WITH SULFUR GUARD BED HAVING CONTROLLED BYPASS FLOW
    Publication number: 20210054295
    Abstract: A naphtha hydrotreating process is described. It involves the use of a sulfur guard bed (SGB) with a controlled bypass which allows for control of the sulfur in the feed to a downstream processing unit. The SGB is installed on the light ends stripper bottoms stream in a naphtha hydrotreating unit.
    Type: Application
    Filed: August 20, 2019
    Publication date: February 25, 2021
    Inventors: Steven B. Philoon, Patrick J. Bullen, Stanley J. Frey, Gail L. Gray, Dean E. Rende
  • Removal of Peroxide Impurities from Naphtha Stream
    Publication number: 20090188839
    Abstract: A method and apparatus for removing peroxides from an exposed naphtha stream is shown and described. The process includes the catalytic reactive oxygen stripping of peroxides thereby generating hydrocarbons and oxygen. Numerous conventional catalysts may be employed. The catalytic stripping reaction can be carried out at substantially lower temperatures than conventional reboiled oxygen strippers thereby resulting in substantial energy savings. Further, the disclosed reactor vessels are substantially smaller and less expensive to build than conventional oxygen stripper columns. The disclosed energy efficient reactive oxygen stripping process and equipment is intended to be utilized upstream of a naphtha hydrotreating unit.
    Type: Application
    Filed: January 28, 2008
    Publication date: July 30, 2009
    Inventors: William D. Schlueter, Julian A. Vickers, Gail L. Gray
  • Process for the activation of an alkylaromatic isomerization catalyst by water
    Patent number: 6512155
    Abstract: An improved process is disclosed for ethylbenzene and xylene isomerization in a non-equilibrium mixture of xylenes and ethylbenzene. By addition of trace quantities of water to the reaction zone, equivalent isomerization is effected at lower temperatures wherein benefits could be realized in reduced losses and improved catalyst life.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: January 28, 2003
    Assignee: UOP LLC
    Inventors: James A. Johnson, Benjamin D. Riley, Sanjay B. Sharma, Patrick J. Silady, Gail L. Gray
  • Pretreatment method for C.sub.8 aromatic isomerization process
    Patent number: 5321184
    Abstract: A pretreatment method for a C.sub.8 aromatic isomerization process wherein the isomerization catalyst is initially contacted with a C.sub.8 aromatic feedstock under high severity isomerization conditions for a period of time sufficient to deposit a substantial amount to carbonaceous material on the catalyst. After pretreatment, the carbon-laden catalyst continues to be contacted by the C.sub.8 aromatic feedstock under less severe conditions than that of the pretreatment mode of operation.
    Type: Grant
    Filed: December 29, 1992
    Date of Patent: June 14, 1994
    Assignee: UOP
    Inventors: Chi-Chu D. Low, Randy J. Lawson, Paul J. Kuchar, Gail L. Gray
  • Butene isomerization process
    Patent number: 5146035
    Abstract: An improved process is disclosed for the isomerization of butenes, using a catalyst comprising a non-zeolitic molecular sieve to increase the proportion of isobutene or of 1-butene in the product with low formation of undesirable by-products.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: September 8, 1992
    Assignee: UOP
    Inventors: Benjamin C. Spehlmann, Gail L. Gray, Lawrence D. Vail, Gregory J. Gajda