Patents Represented by Attorney Marthe L. Gibbons

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  • Phosphorus-containing catalyst and catalytic cracking process utilizing the same
    Patent number: 4498975
    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 a dihydrogen phosphate anion or a dihydrogen phosphite anion. A hydrocarbon catalytic cracking process utilizing the phosphorus-containing catalyst is also provided.
    Type: Grant
    Filed: January 9, 1984
    Date of Patent: February 12, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: Lloyd A. Pine, Neville L. Cull
  • Fluid coking with solvent separation of recycle oil
    Patent number: 4497705
    Abstract: A fluid 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 to separate it into a high Conradson carbon product and a lower Conradson carbon product and, thereafter, at least a portion of the lower 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: February 5, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: Harold N. Weinberg, Charles Rebick, Kenneth O. McElrath
  • Delayed coking process with split fresh feed
    Patent number: 4492625
    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. The given fresh feed splitting configuration permits decreasing the recycle rate of the heavy coker product and increasing liquid yield.
    Type: Grant
    Filed: November 17, 1983
    Date of Patent: January 8, 1985
    Assignee: Exxon Research and Engineering Co.
    Inventor: David E. Allan
  • Start-up method for a hydrorefining process
    Patent number: 4485006
    Abstract: A hydrorefining process for heavy hydrocarbonaceous oils, such as gas oils, is initiated by contacting a sulfided hydrorefining catalyst, such as nickel-molybdenum on alumina, with a light hydrocarbonaceous oil boiling in the range of C.sub.5 to 700.degree. F., in the presence of hydrogen, at specified conditions and, thereafter, contacting the catalyst with the heavy hydrocarbonaceous oil to be hydrorefined.
    Type: Grant
    Filed: February 3, 1983
    Date of Patent: November 27, 1984
    Assignee: Exxon Research and Engineering Co.
    Inventor: Omer Biceroglu
  • Process for the hydrogenation of aromatic hydrocarbons
    Patent number: 4469590
    Abstract: A process for the hydrogenation of aromatic hydrocarbons contained in a hydrocarbonaceous oil feed is provided in which the feed is contacted with hydrogen in a substantially sulfur-free environment in the presence of a catalyst comprising a Group VIII noble metal component, such as palladium, deposited on a steamed support such as steamed tungsten oxide composited with alumina.
    Type: Grant
    Filed: June 17, 1983
    Date of Patent: September 4, 1984
    Assignee: Exxon Research and Engineering Co.
    Inventors: Robert C. Schucker, Kenneth S. Wheelock
  • Phosphorus-containing catalyst
    Patent number: 4465780
    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: October 14, 1982
    Date of Patent: August 14, 1984
    Assignee: Exxon Research & Engineering Co.
    Inventor: Lloyd A. Pine
  • Combination visbreaking and hydrorefining with recycle of hydrorefined bottoms
    Patent number: 4462895
    Abstract: A heavy hydrocarbon oil comprising constituents boiling above 1050.degree. F. is upgraded by a combination visbreaking or hydrovisbreaking and hydrorefining process in which at least a portion of the hydrorefined bottoms fraction is recycled to the visbreaking zone. The hydrorefining zone is operated at conditions to convert at least a portion of the 1050.degree. F..sup.+ constituents to lower boiling hydrocarbons.
    Type: Grant
    Filed: February 25, 1983
    Date of Patent: July 31, 1984
    Assignee: Exxon Research & Engineering Co.
    Inventors: Omer Biceroglu, Bruce M. Sankey
  • High surface area nickel aluminate spinel catalyst for steam reforming
    Patent number: 4456703
    Abstract: A high surface area nickel aluminate spinel formed on alumina, prepared by a specified method and useful as catalyst support and as catalyst for hydrocarbon treating and conversion processes is provided. A steam reforming process utilizing the nickel aluminate spinel on alumina as catalyst is also provided.
    Type: Grant
    Filed: May 7, 1982
    Date of Patent: June 26, 1984
    Assignee: Exxon Research and Engineering Co.
    Inventor: Clyde L. Aldridge
  • Hydroconversion process
    Patent number: 4454024
    Abstract: A slurry hydroconversion process is provided wherein a heavy hydrocarbonaceous oil, in which is dispersed a metal-contaminated, partially deactivated zeolitic cracking catalyst, is converted to lower boiling products in the presence of a molecular hydrogen-containing gas, and a hydrogen donor diluent.
    Type: Grant
    Filed: November 1, 1982
    Date of Patent: June 12, 1984
    Assignee: Exxon Research and Engineering Co.
    Inventors: Gopal H. Singhal, Gordon F. Stuntz
  • Phosphorus-containing catalyst
    Patent number: 4454241
    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 a dihydrogen phosphate anion or a dihydrogen phosphite anion. A hydrocarbon catalytic cracking process utilizing the phosphorus-containing catalyst is also provided.
    Type: Grant
    Filed: May 24, 1982
    Date of Patent: June 12, 1984
    Assignee: Exxon Research and Engineering Co.
    Inventors: Lloyd A. Pine, Neville L. Cull
  • Process for increasing the activity of perovskite catalysts and hydrocarbon treating processes using the activated catalyst
    Patent number: 4452693
    Abstract: The activity of a fresh alkaline earth metal perovskite-containing catalyst can be increased by contacting the fresh catalyst with a reducing gas at reducing conditions prior to use. The activated catalyst is useful in hydrocarbon treating processes such as catalytic cracking and fluid coking.
    Type: Grant
    Filed: June 24, 1983
    Date of Patent: June 5, 1984
    Assignee: Exxon Research and Engineering Co.
    Inventors: Robert C. Schucker, Kenneth S. Wheelock
  • Process for upgrading hydrocarbonaceous oils
    Patent number: 4451354
    Abstract: A process for upgrading a heavy hydrocarbonaceous oil is provided in which the heavy oil is hydrorefined in the presence of a hydrorefining catalyst at conditions to convert a portion of the heavy constituents of the oil, followed by cracking the hydrorefined oil in the presence of the hydrogen donor diluent. The hydrorefining and cracking stages are conducted at a relatively low hydrogen partial pressure while obtaining a high level of conversion of the heavy constituents of the oil.
    Type: Grant
    Filed: January 3, 1983
    Date of Patent: May 29, 1984
    Assignee: Exxon Research and Engineering Co.
    Inventor: Gordon F. Stuntz
  • Process for regenerating perovskite catalysts and hydrocarbon treating processes utilizing the regenerated catalyst
    Patent number: 4446011
    Abstract: A catalyst regeneration process is provided in which the rate of removal of carbon from the coked catalyst is increased at a relatively low temperature when the catalyst comprises a perovskite. Hydrocarbon treating processes utilizing the regenerated perovskite-containing catalysts are also provided. The regenerated catalyst is particularly suited for use in catalytic cracking of hydrocarbon residua.
    Type: Grant
    Filed: August 25, 1982
    Date of Patent: May 1, 1984
    Assignee: Exxon Research and Engineering Co.
    Inventors: Kenneth S. Wheelock, Robert C. Schucker
  • Crystalline silica zeolite-containing catalyst and hydrocarbon hydroprocesses utilizing the same
    Patent number: 4443329
    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: November 12, 1982
    Date of Patent: April 17, 1984
    Assignee: Exxon Research and Engineering Co.
    Inventors: Paul E. Eberly, Jr., William E. Winter, Jr.
  • Low severity fluid coking process
    Patent number: 4426277
    Abstract: A fluid coking process is provided in which a carbonaceous feed is first coked in a dense fluidized bed first coking zone and the effluent of the dense bed is passed as a suspension through a transferline second coking zone. A major portion of the solids is separated from the effluent of the upper end of the transferline and passed to a third coking zone which is operated at a higher temperature than the other coking zones and in which the first and second coking zones are positioned.
    Type: Grant
    Filed: May 14, 1982
    Date of Patent: January 17, 1984
    Assignee: Exxon Research and Engineering Co.
    Inventor: William J. Metrailer
  • Hydroconversion process
    Patent number: 4424110
    Abstract: Carbonaceous feeds such as hydrocarbonaceous oils and coal are hydroconverted in the presence of a combination of a hydrogen halide and a metal-containing catalyst produced in situ in the feed. The hydrogen halide is present in an amount to provide from about 0.1 to 20 moles of hydrogen halide per atom of the metal constituent of the catalyst to increase the activity of the catalyst.
    Type: Grant
    Filed: February 3, 1982
    Date of Patent: January 3, 1984
    Assignee: Exxon Research and Engineering Co.
    Inventors: Roby Bearden, Jr., William C. Baird, Jr., Clyde L. Aldridge
  • Process for increasing the activity of perovskite catalysts and hydrocarbon treating processes using the activated catalyst
    Patent number: 4418008
    Abstract: The activity of a fresh alkaline earth metal perovskite-containing catalyst can be increased by contacting the fresh catalyst with a reducing gas at reducing conditions prior to use. The activated catalyst is useful in hydrocarbon treating processes such as catalytic cracking and fluid coking.
    Type: Grant
    Filed: February 24, 1982
    Date of Patent: November 29, 1983
    Assignee: Exxon Research and Engineering Co.
    Inventors: Robert C. Schucker, Kenneth S. Wheelock
  • Fluid coking with the addition of alkaline earth metal ferrite-containing catalysts
    Patent number: 4414099
    Abstract: A fluid coking process is provided in which a catalyst comprising an alkaline earth metal ferrite is present in the fluid coking zone.
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: November 8, 1983
    Assignee: Exxon Research and Engineering Co.
    Inventor: Robert C. Schucker
  • Process for reactivating perovskite catalysts and hydrocarbon treating processes utilizing the reactivated catalysts
    Patent number: 4412911
    Abstract: A partially deactivated alkaline earth metal perovskite-containing catalyst is reactivated by contact with a reducing gas at reducing conditions. The reactivated catalyst is useful in hydrocarbon treating processes such as catalytic cracking and fluid coking.
    Type: Grant
    Filed: February 24, 1982
    Date of Patent: November 1, 1983
    Assignee: Exxon Research and Engineering Co.
    Inventors: Robert C. Schucker, Kenneth S. Wheelock
  • Fluid coking with the addition of perovskite-containing catalysts
    Patent number: 4411772
    Abstract: A fluid coking process is provided in which a catalyst comprising a perovskite comprising at least one transition metal cation is present in the fluid coking zone.
    Type: Grant
    Filed: February 24, 1982
    Date of Patent: October 25, 1983
    Assignee: Exxon Research and Engineering Co.
    Inventors: Robert C. Schucker, Kenneth S. Wheelock