Patents Represented by Attorney Marthe L. Gibbons
  • Patent number: 4569752
    Abstract: A carbonaceous feed, such as a heavy hydrocarbonaceous oil or coal, and mixtures thereof, is upgraded by a combination coking and catalytic slurry hydroconversion process in which a catalyst precursor is added to the feed of the hydroconversion zone as a catalyst precursor concentrate prepared from a virgin hydrocarbonaceous oil and a thermally decomposable or oil dispersible metal compound.
    Type: Grant
    Filed: November 30, 1984
    Date of Patent: February 11, 1986
    Assignee: Exxon Research and Engineering Co.
    Inventors: Clyde L. Aldridge, Roby Bearden, Jr.
  • Patent number: 4569751
    Abstract: A carbonaceous feed, such as a heavy hydrocarbonaceous oil or coal and mixtures thereof, is upgraded by a combination coking and catalytic slurry hydroconversion process.
    Type: Grant
    Filed: November 30, 1984
    Date of Patent: February 11, 1986
    Assignee: Exxon Research and Engineering Co.
    Inventors: Clarence M. Eidt, Jr., Clyde L. Aldridge, Roby Bearden, Jr.
  • Patent number: 4568452
    Abstract: An absorbent hydrocarbonaceous oil comprising contaminants, such as sulfur and/or nitrogen, is upgraded by subjecting the contaminated absorbent oil to hydrorefining. The upgraded absorbent may be utilized again as absorbent.
    Type: Grant
    Filed: June 15, 1984
    Date of Patent: February 4, 1986
    Assignee: Exxon Research and Engineering Co.
    Inventor: Robert P. Richmond
  • Patent number: 4567156
    Abstract: A catalyst is prepared by adding a water soluble aliphatic polyhydroxy compound such as a polyhydroxy alcohol or a carbohydrate (e.g., sucrose) to an aqueous solution of chromic acid and subsequently introducing the resulting mixture into a hydrocarbon material. The hydrocarbon-containing mixture is heated in the presence of hydrogen sulfide to convert the chromium catalyst precursor to a solid chromimum-containing catalyst. Hydroconversion processes utilizing the catalyst to convert oil, coal, and mixtures thereof are also provided.
    Type: Grant
    Filed: April 29, 1985
    Date of Patent: January 28, 1986
    Assignee: Exxon Research and Engineering Co.
    Inventors: Roby Bearden, Jr., Clyde L. Aldridge
  • Patent number: 4567152
    Abstract: A catalyst is provided which comprises a crystalline zeolite, discrete particles of phosphorus-containing alumina dispersed in a non-zeolitic inorganic oxide matrix. A catalytic cracking process utilizing the catalyst is also provided.
    Type: Grant
    Filed: December 13, 1984
    Date of Patent: January 28, 1986
    Assignee: Exxon Research and Engineering Co.
    Inventor: Lloyd A. Pine
  • Patent number: 4560542
    Abstract: An improved method is provided for the preparation of organic cation-containing zeolites and their thermal decomposition products, by adding the organic templating agent to a preformed aluminosilicate gel containing less than a specified amount of water and a low alkali metal content, and maintaining the mixture at crystallization conditions until the crystalline aluminosilicate zeolite is formed.
    Type: Grant
    Filed: December 6, 1984
    Date of Patent: December 24, 1985
    Assignee: Exxon Research and Engineering Co.
    Inventor: Harry E. Robson
  • Patent number: 4557822
    Abstract: A process for the conversion of a hydrocarbonaceous oil in the presence of hydrogen and an iron-coal catalyst is provided in which a slurry of catalyst in the oil is treated with a hydrogen sulfide-containing gas at specified conditions prior to subjecting the slurry to hydroconversion conditions.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: December 10, 1985
    Assignee: Exxon Research and Engineering Co.
    Inventors: Roby Bearden, Jr., Clyde L. Aldridge
  • Patent number: 4552649
    Abstract: An improved fluid coking process is provided in which an aqueous sludge comprising an organic waste is used as quench in a quench elutriator to cool the coke product and convert at least a portion of the organic waste to a vaporous compound (e.g., hydrocarbon) which is recycled to the heating zone to increase the fuel value of the heating zone gaseous effluent.
    Type: Grant
    Filed: March 15, 1985
    Date of Patent: November 12, 1985
    Assignee: Exxon Research and Engineering Co.
    Inventors: Ann D. Patterson, Wayne M. Kachel
  • Patent number: 4548700
    Abstract: A slurry hydroconversion process is provided in which a carbonaceous chargestock such as a hydrocarbonaceous oil or coal comprising a catalyst containing vanadium or molybdenum or mixtures thereof, is converted to a hydroconverted oil product. A heavy oil portion comprising metal-containing solids is separated from the oil product and partially gasified to produce a carbon-free metal-containing ash which is extracted with oxalic acid. The resulting metal-containing oxalic acid extract is recycled to the hydroconversion zone as catalyst precursor.
    Type: Grant
    Filed: December 14, 1983
    Date of Patent: October 22, 1985
    Assignee: Exxon Research and Engineering Co.
    Inventors: Roby Bearden, Jr., Clyde L. Aldridge
  • Patent number: 4534851
    Abstract: A hydrocarbon feed injection method is provided in which concentric inlet conduits carry hydrocarbon liquid and steam. Small nozzles located on the outer steam-carrying conduit discharge steam in the direction of the inner wall of the transfer line reactor to protect the inner wall from carbonaceous deposits. The hydrocarbon feed nozzles are staged along a line parallel to the longitudinal axis of the transfer line.
    Type: Grant
    Filed: June 2, 1983
    Date of Patent: August 13, 1985
    Assignee: Exxon Research and Engineering Co.
    Inventors: David E. Allan, Charles H. Martinez
  • Patent number: 4534854
    Abstract: A delayed coking process is provided in which the fresh oil is introduced into the coker product fractionator and in which a stream of heavy oil product is withdrawn from the fractionator before it can contact the fresh oil. The stream of heavy oil product withdrawn from the fractionator is subjected to solvent separation to produce a high Conradson carbon product and a low Conradson carbon product. At least a portion of the low Conradson carbon product is recovered and the high Conradson carbon product is recycled to the coking zone.
    Type: Grant
    Filed: August 17, 1983
    Date of Patent: August 13, 1985
    Assignee: Exxon Research and Engineering Co.
    Inventors: Harold N. Weinberg, David W. Savage, Walter Weissman
  • Patent number: 4530755
    Abstract: A coking process is provided in which a stream of heavy oil product, which typically is recycled to the coking zone, is first subjected to solvent separation using coker naphtha as solvent to separate the heavy oil into a high Conradson carbon content product comprising a minor portion of the coker naphtha and a lower Conradson carbon content product comprising a major portion of the coker naphtha and, thereafter, recovering the lower Conradson carbon content product and recycling the high Conradson content product, including the minor portion of coker naphtha, to the coking zone.
    Type: Grant
    Filed: October 31, 1983
    Date of Patent: July 23, 1985
    Assignee: Exxon Research and Engineering Co.
    Inventors: Joseph M. Ritchie, Bong H. Chang, John Sosnowski
  • Patent number: 4528088
    Abstract: A coking process is provided in which a stream of heavy oil product, which typically is recycled to the coking zone, is first subjected to solvent separation using coker naphtha as solvent to separate the heavy oil into a high Conradson carbon content product comprising a minor portion of the coker naphtha and a lower Conradson carbon content product comprising a major portion of the coker naphtha and, thereafter, recycling the high Conradson content product, including the minor portion of coker naphtha, to the coking zone, and separating the lower Conradson carbon content product in the coker product fractionator.
    Type: Grant
    Filed: November 30, 1983
    Date of Patent: July 9, 1985
    Assignee: Exxon Research and Engineering Co.
    Inventors: Bong H. Chang, Joseph M. Ritchie
  • Patent number: 4522706
    Abstract: Hydrocarbon treating processes such as catalytic cracking and fluid coking are provided in which a perovskite-containing catalytic composition is used as catalyst. The perovskite-containing catalytic composition is produced by interrupting the reaction of perovskite precursors after formation of at least 60 wt. % perovskite and before formation of more than 99 wt. % perovskite from the precursors.
    Type: Grant
    Filed: December 23, 1983
    Date of Patent: June 11, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: Kenneth S. Wheelock, Robert C. Schucker
  • Patent number: 4519898
    Abstract: A delayed coking process is conducted at a relatively low temperature with the introduction of a gas into the coking drum to strip volatile matter from the coke product and to form coke containing 6 to 12 weight percent volatile matter. Low temperature delayed coking decreases the amount of coke yield, calculated on a volatile-free basis, and increases liquid yield.
    Type: Grant
    Filed: May 20, 1983
    Date of Patent: May 28, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventor: David E. Allan
  • Patent number: 4513090
    Abstract: A catalyst is provided which comprises a crystalline silica zeolite, a hydrogenation component and a support. The catalyst may be a physical mixture of the zeolite and the supported hydrogenation component or a composite catalyst. Hydrocarbon hydroprocessing processes such as hydroconversion and hydrodesulfurization utilizing the catalyst are also provided. The catalyst is particularly suited for the simultaneous pour point reduction and hydrodesulfurization of hydrocarbonaceous oils.
    Type: Grant
    Filed: July 9, 1981
    Date of Patent: April 23, 1985
    Assignee: Exxon Research and Engineering Co.
    Inventors: Paul E. Eberly, Jr., William E. Winter, Jr.
  • Patent number: 4504382
    Abstract: A phosphorus-containing low alkali metal content zeolitic catalyst made from a clay starting material is provided. The catalyst is obtained by contacting a partially cation exchanged calcined zeolite-containing catalyst with an anion such as a dihydrogen phosphate anion or a dihydrogen phosphite anion and additionally with an ammonium salt other than a salt of an inorganic acid of phosphorus. A hydrocarbon catalytic cracking process utilizing the phosphorus-containing catalyst is also provided.
    Type: Grant
    Filed: April 3, 1984
    Date of Patent: March 12, 1985
    Assignee: Exxon Research and Engineering Co.
    Inventor: Lloyd A. Pine
  • Patent number: 4501654
    Abstract: A delayed coking process is provided in which the fresh hydrocarbonaceous oil feed is divided into at least two streams. One stream is introduced directly into the preheating zone of the coking zone and one stream is introduced into the coker product fractionator. The fractionator bottoms fraction is recycled to the preheating zone as a separate stream from the fresh feed stream. The separate preheated fresh feed stream is introduced into the top of the coking zone and the preheated recycled fractionator bottoms fraction is introduced into the bottom of the coking zone. The given fresh feed splitting configuration permits decreasing the recycle rate of the heavy coker product and increasing liquid yield while the top and bottom feeding to the coking zone permit subjecting the given streams to different severity of coking.
    Type: Grant
    Filed: March 29, 1984
    Date of Patent: February 26, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventor: David E. Allan
  • Patent number: 4501820
    Abstract: A tungsten-containing catalyst associated with coke containing vanadium and nickel is recovered by a method which includes steam gasification, low temperature burning to remove at least a portion of the coke and selective extraction of the nickel and vanadium.
    Type: Grant
    Filed: July 28, 1983
    Date of Patent: February 26, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: David E. Allan, Byron V. Molstedt, Raam R. Mohan
  • Patent number: 4498979
    Abstract: A hydrodesulfurization process is provided in which a heavy hydrocarbonaceous feed comprising materials boiling above 1020.degree. F. is desulfurized at conditions to convert at least a portion of the 1020.degree. F..sup.+ materials, in the presence of hydrogen and a non-zeolitic hydrodesulfurization catalyst comprising a Group IIA metal component such as magnesia.
    Type: Grant
    Filed: September 12, 1983
    Date of Patent: February 12, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventor: Paul E. Eberly, Jr.