Patents by Inventor Andrei Rhoe

Andrei Rhoe 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).

  • Production of gasoline from light hydrocarbons
    Patent number: 5227555
    Abstract: A process for the production of gasoline from a light hydrocarbon feed. The feed is catalytically aromatized to produce an effluent containing aromatics and olefins with the aromatics and olefins being subjected to alkylation to produce a gasoline product with a higher octane rating.
    Type: Grant
    Filed: July 12, 1988
    Date of Patent: July 13, 1993
    Assignee: ABB Lummus Crest Inc.
    Inventors: Andrei Rhoe, Kenneth J. Gwozdz
  • Transalkylation of benzene in a moving bed
    Patent number: 5087783
    Abstract: An improved process for the alkylation of benzene in the presence of an alkylation catalyst. The catalyst bed may be caused to move in a direction countercurrent to the movement of the benzene and olefin, or a portion of the catalyst bed is periodically removed and replaced. A regeneration step, whereby the catalyst is heated in a controlled oxygen atmosphere in order to reactivate the catalyst, is also described.
    Type: Grant
    Filed: November 9, 1990
    Date of Patent: February 11, 1992
    Assignee: Lummus Crest, Inc.
    Inventors: Roger C. Johnson, Daniel McCarthy, Andrei Rhoe
  • Alkylation of benzene in a moving bed
    Patent number: 4973780
    Abstract: An improved process for the alkylation of benzene in the presence of an alkylation catalyst. The catalyst bed may be caused to move in a direction countercurrent to the movement of the benzene and olefin, or a portion of the catalyst bed is periodically removed and replaced. A regeneration step, whereby the catalyst is heated in a controlled oxygen atmosphere in order to reactivate the catalyst, is also described.
    Type: Grant
    Filed: April 27, 1988
    Date of Patent: November 27, 1990
    Assignee: Lummus Crest, Inc.
    Inventors: Roger C. Johnson, Daniel McCarthy, Andrei Rhoe
  • High severity visbreaking with recycle
    Patent number: 4846958
    Abstract: The severity of a visbreaking operation is increased by treating product to remove a heavier phase in an amount of less than 15 weight percent and recycling treated product.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: July 11, 1989
    Assignee: Lummus Crest, Inc.
    Inventors: Robert J. Feldman, Andrei Rhoe, Roger P. Van Driesen, Joseph F. Puzio, Vincent A. Strangio
  • Solvent refining of residues
    Patent number: 4795551
    Abstract: In the solvent refining of a residual oil, a mixture of refined oil and refining solvent, and a mixture of pitch impurities and refining solvent are introduced into separate zones of a combination tower operated at a pressure of no greater than 100 psig to recover refining solvent from each of the mixtures. The combination tower is preferably A modified crude distillation tower from a preexisting crude unit, whereby idle crude units may be converted to solvent refining.
    Type: Grant
    Filed: July 15, 1985
    Date of Patent: January 3, 1989
    Assignee: Lummus Crest, Inc.
    Inventors: Gary L. Hamilton, Andrei Rhoe, Donald P. Satchell
  • High severity visbreaking
    Patent number: 4773986
    Abstract: The severity of a visbreaking operation is increased by treating product to remove a heavier phase in an amount of less than 15 weight percent and provide a remaining product having a Shell Hot Filtration number of less than 0.25.
    Type: Grant
    Filed: December 18, 1986
    Date of Patent: September 27, 1988
    Assignee: Lummus Crest, Inc.
    Inventors: Robert J. Feldman, Andrei Rhoe, Roger P. Van Driesen, Joseph F. Puzio, Vincent A. Strangio
  • Treatment of feed for high severity visbreaking
    Patent number: 4767521
    Abstract: Prior to upgrading a viscous feed by visbreaking, at least a portion of the feed is treated to remove a heavy phase in specified amounts, whereby the severity of the visbreaking may be increased. The Shell Hot Filtration number of the visbreaking product is reduced by at least 75%, compared to visbreaking of untreated feed at some severity.
    Type: Grant
    Filed: December 18, 1986
    Date of Patent: August 30, 1988
    Assignee: Lummus Crest, Inc.
    Inventors: Robert J. Feldman, James M. Chen, Andrei Rhoe, Roger P. Van Driesen, C. Bertil Fogman, Donald P. Satchell
  • Solvent for refining of residues
    Patent number: 4592831
    Abstract: Solvent refining of a residual oil is accomplished with a refining solvent containing methanol and propanol, preferably isopropanol. The solvent produces high yields of a high quality refined oil, as well as a pumpable pitch fraction.
    Type: Grant
    Filed: December 12, 1984
    Date of Patent: June 3, 1986
    Assignee: Lummus Crest Inc.
    Inventors: Andrei Rhoe, Joseph A. Pisani, Gary L. Hamilton, George D. Suciu