Patents by Inventor Paul Alvin Sechrist

Paul Alvin Sechrist 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).

  • Replacement of particles in a moving bed process
    Patent number: 5688473
    Abstract: An apparatus for replacing particles in a process that transfers particles is disclosed. The apparatus employs a seal zone which is in communication with two zones of the process and in which particles that are being added to the process are purged. The apparatus allows particles to be replaced without reducing the normal rate of particle transfer through the process, which results in a savings in downtime costs. This invention is adaptable to a multitude of processes for the catalytic conversion of hydrocarbons in which deactivated catalyst particles are regenerated.
    Type: Grant
    Filed: March 13, 1996
    Date of Patent: November 18, 1997
    Assignee: UOP
    Inventors: Roger Reed Lawrence, Frank T. Micklich, Charles T. Ressl, Paul Alvin Sechrist
  • Dual regeneration zone solid catalyst alkylation process
    Patent number: 5675048
    Abstract: Hydrocarbons are alkylated in a fluidized riser-reactor using a solid catalyst which is regenerated within the process by contact with hydrogen. The alkylation and regeneration steps are separated to prevent the admixture of hydrogen and any olefins present in the process. Two separate modes of regeneration are performed simultaneously on different portions of the catalyst: a partial liquid-phase hydrogenative regeneration at reaction conditions and a high temperature (complete) liquid-phase hydrogenative regeneration.
    Type: Grant
    Filed: February 5, 1996
    Date of Patent: October 7, 1997
    Assignee: UOP
    Inventors: Scott Yu-Feng Zhang, Christopher David Gosling, Paul Alvin Sechrist, Gregory A. Funk
  • Fluidized bed solid catalyst motor fuel alkylation process
    Patent number: 5672798
    Abstract: Hydrocarbons are alkylated in a fluidized riser-reactor using a solid catalyst which is regenerated within the process by contact with hydrogen. The alkylation and regeneration steps are separated to prevent the admixture of hydrogen and any olefins present in the process. Two separate modes of regeneration are performed simultaneously: a mild liquid-phase washing and a vapor-phase hot hydrogen stripping operation.
    Type: Grant
    Filed: February 5, 1996
    Date of Patent: September 30, 1997
    Assignee: UOP
    Inventors: Scott Yu-Feng Zhang, Christopher David Gosling, Paul Alvin Sechrist, Gregory A. Funk