Patents Represented by Attorney, Agent or Law Firm W. K. Turner
  • Process for coking contaminated pyrolysis oil on heat transfer material
    Patent number: 4456525
    Abstract: The heavy oil fraction of pyrolysis oil vapors containing concentrated contaminants is coked on hot heat transfer material. The coke-containing heat transfer material is then mixed with raw feed in a retorting vessel provided with an inert stripping gas of a velocity sufficient to lower the dew point of the pyrolysis oil.
    Type: Grant
    Filed: May 16, 1983
    Date of Patent: June 26, 1984
    Assignee: Chevron Research Company
    Inventors: Byron G. Spars, Robert J. Klett, P. Henrik Wallman
  • Hydroprocessing catalyst having bimodal pore distribution and process for preparing the catalyst
    Patent number: 4456701
    Abstract: A process for hydroprocessing a hydrocarbonaceous feedstock containing constituents boiling above 350.degree. C. comprises contacting said feedstock with hydrogen under hydroprocessing conditions with a catalyst composition comprising a rigidly interconnected pack containing inorganic matrix oxide and about 10-95% fluid catalytic cracking catalyst microspheroids, based upon the total weight of said matrix oxide and said microspheroids, said pack characterized by a pore volume of at least 0.15 cc. per cc., at least about 30% of said pore volume present as pores having diameters within the range of 50-250 Angstroms and at least about 5% of said pore volume present as pores having diameters greater than 1,000 Angstroms.
    Type: Grant
    Filed: January 31, 1983
    Date of Patent: June 26, 1984
    Assignee: Chevron Research Company
    Inventor: Hong C. Chen
  • Reactor vessel and process for thermally treating a granular solid
    Patent number: 4456504
    Abstract: A reactor vessel for maintaining a staged moving bed of solids, in the presence of countercurrently flowing gas stream, having a diameter of at least one meter and a pressure drop across the body of solids approximately equal to that of a fully fluidized bed and a method for using same to thermally process a granular solid composed of a broad distribution of particle sizes.
    Type: Grant
    Filed: December 31, 1981
    Date of Patent: June 26, 1984
    Assignee: Chevron Research Company
    Inventors: Byron G. Spars, Paul W. Tamm, P. Henrik Wallman
  • Hydrocarbon conversion process
    Patent number: 4456527
    Abstract: A hydrocarbon conversion process is disclosed having a very high selectivity for dehydrocyclization. In one aspect of this process, a hydrocarbon feed is subjected to hydrotreating, then the hydrocarbon feed is passed through a sulfur removal system which reduces the sulfur concentration of the hydrocarbon feed to below 500 ppb, and then the hydrocarbon feed is reformed over a dehydrocyclization catalyst comprising a large pore zeolite containing at least one Group VIII metal to produce aromatics and hydrogen.
    Type: Grant
    Filed: March 21, 1983
    Date of Patent: June 26, 1984
    Assignee: Chevron Research Company
    Inventors: Waldeen C. Buss, Leslie A. Field, Richard C. Robinson
  • Continuous preparation of chloroacetone
    Patent number: 4251467
    Abstract: Symmetrical 1,3-dichloroacetone is prepared by contacting chlorine with an aqueous mixture of acetone, monochloroacetone, or mixtures thereof and an iodine-containing promoter.
    Type: Grant
    Filed: September 2, 1976
    Date of Patent: February 17, 1981
    Assignee: Chevron Research Company
    Inventor: Victor P. Kurkov