Patents by Inventor Roby Bearden, Jr.
Roby Bearden, Jr. 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).
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Patent number: 5695632Abstract: The invention relates to an integrated, continuous process for the removal of organically bound sulfur (e.g., mercaptans, sulfides and thiophenes) comprising the steps of contacting a heavy oil, sodium hydroxide, hydrogen and water at a temperature of from about 380.degree. C. to 450.degree. C. to partially desulfurize the heavy oil and to form sodium sulfide, contacting said sodium sulfide with a transition metal in water to form a transition metal sulfide, sodium hydroxide and hydrogen. The sodium hydroxide is recirculated and the transition metal sulfide is removed. The partially desulfurized, dewatered heavy oil is treated with sodium metal under desulfurizing conditions, typically at a temperature of from about 340.degree. C. to about 450.degree. C., under a hydrogen pressure of at least about 50 psi to essentially desulfurize the oil, and form sodium sulfide. Optionally, the sodium salt generated can be regenerated to sodium metal using regeneration technology.Type: GrantFiled: May 2, 1995Date of Patent: December 9, 1997Assignee: Exxon Research and Engineering CompanyInventors: Glen B. Brons, Ronald Myers, Roby Bearden, Jr.
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Patent number: 5597474Abstract: The present invention relates to an integrated fluid coking/hydrogen production process. The fluid coking unit is comprised of a fluid coker reactor, a heater, and a gasifier. Solids from the fluidized beds are recycled between the coking zone and the heater and between the heater and the gasifier. A separate stream of hot solids from the gasifier is passed to the scrubbing zone of the reactor. Methane and steam are introduced into the stream of hot solids passing from the gasifier to the scrubbing zone. The hot particles act to catalyze the conversion of methane to carbon monoxide and hydrogen in the presence of steam.Type: GrantFiled: November 14, 1994Date of Patent: January 28, 1997Assignee: Exxon Research & Engineering Co.Inventors: Michael C. Kerby, Roby Bearden, Jr., Stephen M. Davis, LeRoy Clavenna
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Patent number: 5472596Abstract: An integrated fluid coking/paraffin dehydrogenation process. The fluid coking unit is comprised of a fluid coker reactor and a heater with hot solids recycling between the coker reactor and the heater. A light paraffin stream is introduced into the line wherein the hot particles are recycled to the coking zone. The hot particles act to catalyze the dehydrogenation of the paraffins to olefins.Type: GrantFiled: February 10, 1994Date of Patent: December 5, 1995Assignee: Exxon Research and Engineering CompanyInventors: Michael C. Kerby, Roby Bearden, Jr., Stephen M. Davis
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Patent number: 5447622Abstract: Disclosed is a method which combines catalytic cracking and olefin production using a coked catalytic cracking catalyst as a dehydrogenation catalyst to dehydrogenate an alkane feed stream and form an olefin rich product stream. The method uses a staged backmixed regeneration system to form the dehydrogenation catalyst and to fully reactivate deactivated cracking catalyst for reuse in the cracking reaction. The catalyst preferably comprises a crystalline tetrahedral framework oxide component.Type: GrantFiled: November 19, 1993Date of Patent: September 5, 1995Assignee: Exxon Research & Engineering Co.Inventors: Michael C. Kerby, Roby Bearden, Jr., Stephen M. Davis
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Patent number: 5437782Abstract: The present invention relates to an integrated fluid coking/paraffin dehydrogenation process. The fluid coking unit is comprised of a fluid coker reactor, a heater, and a gasifier. Solids from the fluidized beds are recycled between the coking zone and the heater and between the heater and the gasifier. A separate stream of hot solids from the gasifier is passed to a satellite reactor. A light paraffin stream is introduced into directly into this stream of hot solids passing to the satellite reactor or into the satellite reactor. The hot particles act to catalyze the dehydrogenation of the paraffins to olefins.Type: GrantFiled: October 27, 1993Date of Patent: August 1, 1995Assignee: Exxon Research and Engineering CompanyInventors: Michael C. Kerby, Roby Bearden, Jr., Stephen M. Davis
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Patent number: 5435905Abstract: An integrated fluid coking/paraffin dehydrogenation process. The fluid coking unit is comprised of a fluid coker reactor, a heater, and a gasifier. Solids from the fluidized beds are recycled between the coking zone and the heater and between the heater and the gasifier. A separate stream of hot solids from the gasifier is passed to the scrubbing zone after first being reduced in temperature by introduction of an effective amount of diluent, such as steam. A light paraffin stream is introduced into this stream of hot solids between the point where the diluent is added and the scrubbing zone. The hot particles act to catalyze the dehydrogenation of paraffins to olefins.Type: GrantFiled: October 27, 1993Date of Patent: July 25, 1995Assignee: Exxon Research and Engineering CompanyInventors: Stephen M. Davis, Michael C. Kerby, Roby Bearden, Jr.
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Patent number: 5430216Abstract: An integrated fluid coking/paraffin dehydrogenation process. The fluid coking unit is comprised of a fluid coker reactor, a heater, and a gasifier. Solids from the fluidized beds are recycled between the coking zone and the heater and between the heater and the gasifier. A separate stream of hot solids from the gasifier is diluted with hot solids from the heater then passed to the scrubbing zone of the coker reactor. A light paraffin stream is introduced into this stream of hot solids between the point where the heater solids are introduced and the scrubbing zone. The hot particles act to catalyze the dehydrogenation of the paraffins to olefins.Type: GrantFiled: October 27, 1993Date of Patent: July 4, 1995Assignee: Exxon Research & Engineering Co.Inventors: Michael C. Kerby, Roby Bearden, Jr., Stephen M. Davis
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Patent number: 5430217Abstract: An integrated fluid coking/paraffin dehydrogenation process. The fluid coking unit is comprised of a fluid coker reactor, a heater, and a gasifier. Solids from the fluidized beds are recycled between the coking zone and the heater and between the heater and the gasifier. A separate stream of hot solids from the gasifier is passed to the scrubbing zone or to a satellite fluidized reactor. A first stream containing an effective amount of C.sub.1 to C.sub.2 paraffins is introduced into this stream of hot solids between the point where the diluent is added and the scrubbing zone. The hot particles act to catalyze the dehydrogenation of paraffins to olefins. A second stream containing C.sub.3 to C.sub.10 paraffins is introduced downstream of the introduction of said first stream.Type: GrantFiled: October 27, 1993Date of Patent: July 4, 1995Assignee: Exxon Research & Engineering Co.Inventors: Roby Bearden, Jr., Michael C. Kerby, Stephen M. Davis
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Patent number: 5414181Abstract: Disclosed is a method which combines catalytic cracking and olefin production using a coked catalytic cracking catalyst to dehydrogenate an alkane feed stream and form an olefin rich product stream. Preferably, the coked catalytic cracking catalyst has a carbon content of about 0.2-10 wt. %. The catalyst preferably comprises a crystalline tetrahedral framework oxide component.Type: GrantFiled: November 19, 1993Date of Patent: May 9, 1995Assignee: Exxon Research and Engineering CompanyInventors: Roby Bearden, Jr., Michael C. Kerby, Stephen M. Davis
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Patent number: 5228981Abstract: A coking process wherein a heavy hydrocarbonaceous chargestock is mixed with a minor amount of coal and preheated to a temperature from about 500.degree. F. up to, but not including, coking temperatures. The pretreated mixture is then reacted in a coking zone at coking conditions.Type: GrantFiled: April 16, 1992Date of Patent: July 20, 1993Assignee: Exxon Research & Engineering CompanyInventors: William N. Olmstead, Roby Bearden, Jr.
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Patent number: 5108581Abstract: Disclosed is a catalytic process for hydroconverting heavy hydrocarbonaceous feedstocks to lower boiling products wherein a catalyst precursor concentrate or catalyst concentrate is first prepared in a heavy oil medium then fed to a hydroconversion zone which may also contain a supported hydrotreating catalyst. The hydroconversion zone may be operated in either slurry or ebullating bed mode.Type: GrantFiled: November 1, 1990Date of Patent: April 28, 1992Assignee: Exxon Research and Engineering CompanyInventors: Clyde L. Aldridge, Roby Bearden, Jr., William E. Lewis
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Patent number: 5094737Abstract: A fluid coking-gasification process for converting heavy hydrocarbonaceous chargestocks to lower boiling products in which calcium silicate is used to mitigate bogging, slagging, or both. The calcium silicate can be added directly to the heavy hydrocarbonaceous chargestock to mitigate both bogging and slagging or it can be added directly into the gasifier to mitigate slagging.Type: GrantFiled: October 1, 1990Date of Patent: March 10, 1992Assignee: Exxon Research & Engineering CompanyInventors: Roby Bearden, Jr., Tan-Jen Chen, William N. Olmstead
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Patent number: 5053376Abstract: A method for preparing a sulfided molybdenum catalyst concentrate which method comprises: (a) forming a precursor catalyst concentrate by mixing together: (i) a hydrocarbonaceous oil comprising constituents boiling above about 1050.degree. F.; (ii) a metal compound, said metal being selected from the group consisting of Groups II, III, IV, V, VIB, VIIB, and VIII of the Periodic Table of the Elements, in an amount to provide from about 0.2 to 2 wt. % metal, based on said hydrocarbonaceous oil; and (iii) elemental sulfur in an amount such that the atomic ratio of sulfur to metal is from about 1/1 to 8/1; and (b) heating the mixture to an effective temperature to produce a catalyst concentrate.Type: GrantFiled: June 4, 1990Date of Patent: October 1, 1991Assignee: Exxon Research & Engineering CompanyInventors: Roby Bearden, Jr., Clyde L. Aldridge
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Patent number: 5039392Abstract: A process for converting a heavy hydrocarbonaceous chargestock to lower boiling products which process comprises reacting the chargestock with a catalyst concentrate in the presence of hydrogen, at hydroconversion conditions, said catalyst concentrate having been prepared by the steps comprising: (a) forming a precursor catalyst concentrate by mixing together: (i) a hydrocarbonaceous oil comprising constituents boiling above about 1050.degree. F.; (ii) a metal compound, said metal being selected from the group consisting of Groups II, III, IV, V, VIB, VIIB, and VIII of the Periodic Table of the Elements, in an amount to provide from about 0.2 to 2 wt. % metal, based on said hydrocarbonaceous oil; (b) heating the precursor concentrate to an effective temperature to produce a catalyst concentrate, wherein elemental sulfur is used an a sulfiding agent in an amount such that the atomic ratio of sulfur to metal is from about 1/1 to 8/1.Type: GrantFiled: June 4, 1990Date of Patent: August 13, 1991Assignee: Exxon Research and Engineering CompanyInventors: Roby Bearden, Jr., Clyde L. Aldridge
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Patent number: 4992163Abstract: A method of reducing the concentration of metal contaminants, such as vanadium and nickel, in distillates of a fossil fuel feedstock is disclosed. The method comprises producing a selected distillate fraction and demetallizing this distillate by suitable means, thereby upgrading and making it suitable for use as feed to a catalytic cracker.Type: GrantFiled: December 13, 1989Date of Patent: February 12, 1991Assignee: Exxon Research and Engineering CompanyInventors: Clyde L. Aldridge, Roby Bearden, Jr.
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Patent number: 4988434Abstract: A method of reducing the concentration of metal contaminants, such as vanadium and nickel, in a petroleum distillate or other hydrocarbonaceous liquid is disclosed. The method comprises demetallizing the distillate over an activated-carbon supported vanadium catalyst.Type: GrantFiled: December 13, 1989Date of Patent: January 29, 1991Assignee: Exxon Research and Engineering CompanyInventors: Clyde L. Aldridge, Roby Bearden, Jr., Kenneth L. Riley
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Patent number: 4954240Abstract: A hydrocarbonaceous feed, such as petroleum vacuum distillation bottoms, is upgraded by a combination coking and catalytic slurry hydroconversion process wherein a bottoms fraction from coking is passed to a slurry hydroconversion zone, and the bottoms fraction from the slurry hydroconversion zone is also passed thorugh a microfiltration system to remove catalyst particles.Type: GrantFiled: December 19, 1988Date of Patent: September 4, 1990Assignee: Exxon Research & Engineering CompanyInventors: Clarence M. Eidt, Jr., Clyde L. Aldridge, Roby Bearden, Jr.
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Patent number: 4952306Abstract: A novel slurry hydrotreating process is described which employs a hydrotreating catalyst of small particle size having a quantity of catalyst sites in excess of those required for reaction and/or adsorption of nitrogen compounds in the petroleum or synfuel feed being treated. The excess catalyst sites can therefore in effect be contacted with a low nitrogen or essentially zero nitrogen feed, allowing rapid hydrogenation of aromatics at low temperatures where equilibrium is favored. In a further aspect of the invention, the catalyst which contains adsorbed nitrogen is activated by high temperature denitrogenation.Type: GrantFiled: September 22, 1989Date of Patent: August 28, 1990Assignee: Exxon Research and Engineering CompanyInventors: Willard H. Sawyer, Roby Bearden, Jr., Russell R. Chianelli, William E. Winter, Jr.
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Patent number: 4882036Abstract: A hydrocarbonaceous feed, such as petroleum vacuum distillation bottoms, is upgraded by a combination coking and catalytic slurry hydroconversion process wherein a bottoms fraction from coking is passed through a microfiltration system to remove coke fines, the filtrate passed to a slurry hydroconversion zone, and the bottoms fraction from the slurry hydroconversion zone is also passed through a microfiltration system to remove catalyst particles.Type: GrantFiled: December 27, 1988Date of Patent: November 21, 1989Assignee: Exxon Research and Engineering CompanyInventors: Clarence M. Eidt, Jr., Clyde L. Aldrige, Roby Bearden, Jr.
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Patent number: 4793916Abstract: An improved process is provided for hydroconverting of coal in which a hydrocarbon-dispersible chromium compound is mixed with a hydrocarbonaceous material, in the absence of coal, to form a high metals-containing catalyst precursor concentrate which is heated in the presence of a hydrogen sulfide-containing gas to form a solid chromium-containing catalyst. A portion of the concentrate containing the catalyst is introduced into a diluent to which coal is added or in which coal is present. The resulting mixture is subjected to hydroconversion conditions to convert the coal to a hydrocarbonaceous oil product.Type: GrantFiled: April 3, 1987Date of Patent: December 27, 1988Assignee: Exxon Research and Engineering CompanyInventors: Clyde L. Aldridge, Roby Bearden, Jr.