Patents by Inventor Scott Yu-Feng Zhang

Scott Yu-Feng Zhang 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).

  • Modified riser-reactor reforming process
    Patent number: 5770045
    Abstract: A catalytic reforming process uses a riser reactor with multiple catalyst injection points to obtain high aromatics yields from a naphtha feedstock. Product from the riser reactor typically is discharged into a fluidized-reforming reactor, in which the reforming reaction is completed and catalyst is separated from hydrogen and hydrocarbons. Hydrocarbons from the reactor are separated to recover an aromatized product. Catalyst is regenerated to remove coke and reduced for reuse in the reforming process.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: June 23, 1998
    Assignee: UOP
    Inventors: Christopher David Gosling, Scott Yu-Feng Zhang, Paula L. Bogdan
  • 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