Patents by Inventor Stephen M. Kovach

Stephen M. Kovach 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).

  • Patent number: 4750987
    Abstract: A process is disclosed for the conversion of a hydrocarbon oil feed having a significant content of vanadium to lighter oil products by contacting the feed under conversion conditions in a conversion zone with a catalyst containing a metal additive to immobilize vanadium compounds. Conversion conditions are such that coke and vanadium are deposited on the catalyst in the conversion zone. Coked catalyst is regenerated in the presence of an oxygen containing gas at a temperature sufficient to remove the coke and regenerated catalyst is recycled to the conversion zone for contact with fresh feed. The metal additive is present on the catalyst in an amount sufficient to immobilize the vanadium compounds in the presence of oxygen containing gas at the catalyst regeneration temperature.
    Type: Grant
    Filed: November 7, 1986
    Date of Patent: June 14, 1988
    Assignee: Ashland Oil, Inc.
    Inventors: H. Wayne Beck, James D. Carruthers, Edward B. Cornelius, William P. Hettinger, Jr., Stephen M. Kovach, James L. Palmer, Oliver J. Zandona
  • Patent number: 4591425
    Abstract: A three stage catalytic cracking process capable of converting high molecular weight hydrocarbons containing catalyst poisons into products of lower molecular weight by cascading catalyst from a fluid catalytic cracking unit to a reduced crude conversion unit to a metals removal unit is disclosed. Efficiencies in conversion operations are made possible.
    Type: Grant
    Filed: December 14, 1984
    Date of Patent: May 27, 1986
    Assignee: Ashland Oil, Inc.
    Inventors: Stephen M. Kovach, Charles B. Miller
  • Patent number: 4588702
    Abstract: A catalyst nominally containing zeolite, clay and silica-alumina gel. The zeolite is preferably partially exchanged with high La/Ce ratio solution in a wetting step. The catayst and processes for its manufacture and use are disclosed. The catalyst is excellent for processing heavy oils, generally produces higher LCO/slurry oil ratio and has high metals tolerance.
    Type: Grant
    Filed: October 18, 1984
    Date of Patent: May 13, 1986
    Assignee: Ashland Oil, Inc.
    Inventors: H. Wayne Beck, James D. Carruthers, Edward B. Cornelius, Ronald A. Kmecak, Stephen M. Kovach, William P. Hettinger, Jr.
  • Patent number: 4561968
    Abstract: A catalyst nominally containing zeolite, clay and silica-alumina gel is disclosed. The zeolite is preferably partially exchanged with high La/Ce ratio solution in a wetting step. The catalyst and processes for its manufacture and use are disclosed. The catalyst is excellent for processing heavy oils, generally produces higher LCO/slurry oil ratio and has high metals tolerance.
    Type: Grant
    Filed: February 27, 1984
    Date of Patent: December 31, 1985
    Assignee: Ashland Oil, Inc.
    Inventors: H. Wayne Beck, James D. Carruthers, Edward B. Cornelius, Ronald A. Kmecak, Stephen M. Kovach, William P. Hettinger, Jr.
  • Patent number: 4552647
    Abstract: A process for economically converting carbo-metallic oils to lighter products. The carbo-metallic oils contain 650.degree. F.+ material which is characterized by containing material which will not boil below about 1025.degree. F., a carbon residue on pyrolysis of at least about 2, and a nickel plus vanadium content of at least about 4 parts per million. This process comprises adding an additive to the feedstock consisting of a compound containing titanium, zirconium, or aluminum so as to restore cracking activity of high metal contaminated and deactivated, zeolite containing catalysts, resulting from processing of these carbo-metallic oils.
    Type: Grant
    Filed: April 18, 1984
    Date of Patent: November 12, 1985
    Assignee: Ashland Oil, Inc.
    Inventors: William P. Hettinger, Jr., Stephen M. Kovach, Hubert W. Beck
  • Patent number: 4551231
    Abstract: Contaminating metals including nickel, vanadium, iron and copper are deposited on a fluid cracking catalyst during the processing of carbo-metallic containing oils such as residual oils, reduced crudes or topped crudes. These contaminating metals lead to undesirous side reactions such as dehydrogenation, coking and methyl group removal which adversely affect conversion and gasoline selectively. Furthermore vanadia deactivates the crystalline zeolite component of the catalyst in addition to causing catalyst agglomeration because of its pentoxide melting point by treatment with a reducing gas such as ammonia. The ammonia is added as ammonia or in the presence of diluents such as nitrogen, carbon dioxide, flue gas, fuel gas and steam. The reaction of ammonia with vanadium produces vanadium nitride which is water insoluble and facilitates the disposal of high vanadium containing spent of deactivated catalyst by landfill techniques.
    Type: Grant
    Filed: August 8, 1983
    Date of Patent: November 5, 1985
    Assignee: Ashland Oil, Inc.
    Inventors: Stephen M. Kovach, James L. Palmer
  • Patent number: 4549958
    Abstract: A process is disclosed for the treatment of a hydrocarbon oil feed having a significant content of vanadium to provide a higher grade of oil products by contacting the feed under treatment conditions in a treatment zone with sorbent material containing a metal additive to immobilize vanadium compounds. Treatment conditions are such that coke and vanadium are deposited on the sorbent in the treatment zone. Coked sorbent is regenerated in the presence of an oxygen containing gas at a temperature sufficient to remove the coke, and regenerated sorbent is recycled to the treatment zone for contact with fresh feed. The metal additive is present on the sorbent in an amount sufficient to immobilize the vanadium compounds in the presence of oxygen containing gas at the sorbent regeneration temperature. A sorbent composition disclosed comprises a kaolin clay containing the metal additive, which may be introduced into the clay during the treatment process or during sorbent manufacture.
    Type: Grant
    Filed: November 24, 1982
    Date of Patent: October 29, 1985
    Assignee: Ashland Oil, Inc.
    Inventors: H. Wayne Beck, James D. Carruthers, Edward B. Cornelius, William P. Hettinger, Jr., Stephen M. Kovach, James L. Palmer, Oliver J. Zandona
  • Patent number: 4513093
    Abstract: A process is disclosed for the treatment of a hydrocarbon oil feed having a significant content of vanadium to provide a higher grade of oil products by contacting the feed under treatment conditions in a treatment zone with sorbent material containing a metal additive to immobilize vanadium compounds. Treatment conditions are such that coke and vanadium are deposited on the sorbent in the treatment zone. Coked sorbent is regenerated in the presence of an oxygen containing gas at a temperature sufficient to remove the coke, and regenerated sorbent is recycled to the treatment zone for contact with fresh feed. The metal additive is present on the sorbent in an amount sufficient to immobilize the vanadium compounds in the presence of oxygen containing gas at the sorbent regeneration temperature. A sorbent composition disclosed comprises a kaolin clay containing the metal additive, which may be introduced into the clay during the treatment process or during sorbent manufacture.
    Type: Grant
    Filed: March 30, 1981
    Date of Patent: April 23, 1985
    Assignee: Ashland Oil, Inc.
    Inventors: H. Wayne Beck, James D. Carruthers, Edward B. Cornelius, William P. Hettinger, Jr., Stephen M. Kovach, James L. Palmer, Oliver J. Zandona
  • Patent number: 4508839
    Abstract: An improved process and catalyst for economically converting carbo-metallic oils to lighter products. This process is practiced in accordance with effective metals management, carbon management and catalyst activity management combined with feed atomization-vaporization, efficient stripping of carbonaceous material from the coked catalyst, exothermic and endothermic removal of hydrocarbonaceous material to effectively maintain the RCC unit in heat balance. This reduced crude cracking process is practiced with a new and improved catalyst composition identified as RCCC-1 Special that is characterized by the following composition; at least 30 wt % rare earth exchanged "Y" faujasite crystalline zeolite with a silica to alumina ratio of at least 5 of a high lanthanum to cerium ratio and residual sodium content less than 0.30 wt %, is provided with a pore volume greater than 0.35 cc/gm. and comprises a clay matrix material that may or may not be acidic with pore size openings in the range of 500 to 2,000 angstroms.
    Type: Grant
    Filed: August 27, 1981
    Date of Patent: April 2, 1985
    Assignee: Ashland Oil, Inc.
    Inventors: Oliver J. Zandona, William P. Hettinger, Jr., Stephen M. Kovach, Hubert W. Beck
  • Patent number: 4496665
    Abstract: A process for economically converting carbo-metallic oils to lighter products. The carbo-metallic oils contain 650.degree. F.+ material which is characterized by containing material which will not boil below about 1025.degree. F., a carbon residue on pyrolysis of at least about 2, and a nickel plus vanadium content of at least about 4 parts per million. This process comprises adding an additive to the feedstock consisting of a compound containing titanium, zirconium, or aluminum so as to restore cracking activity of high metal contaminated and deactivated, zeolite containing catalysts, resulting from processing of these carbo-metallic oils.
    Type: Grant
    Filed: March 11, 1983
    Date of Patent: January 29, 1985
    Assignee: Ashland Oil, Inc.
    Inventors: William P. Hettinger, Jr., Stephen M. Kovach, Hubert W. Beck
  • Patent number: 4489213
    Abstract: Mixtures of aromatic and olefinic hydrocarbons are contacted in the presence of a catalyst under appropriate pressure, temperature and space velocity to effect alkylation of the aromatic hydrocarbon. The catalyst is alumina containing boria and an oxide of a metal from Group IVA (tin and lead) or Group VIIB (manganese).
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: December 18, 1984
    Assignee: Ashland Oil, Inc.
    Inventor: Stephen M. Kovach
  • Patent number: 4485184
    Abstract: A process is disclosed for the treatment of a hydrocarbon oil feed having a significant content of metals to lighter oil products by contacting the feed under conversion conditions in a conversion zone with a catalyst containing a sacrificial trap material sufficient to immobilize Ni-V-Na compounds. Conversion conditions are such that carbonaceous material and metals are deposited on the catalyst in the conversion zone. The catalyst is regenerated in the presence of an oxygen containing gas at a temperature sufficient to remove the carbonaceous deposits, and regenerated catalyst is recycled to the conversion zone for a contact with fresh feed. The sacrificial trap material is present on the catalyst in an amount sufficient to substantially immobilize the metal compounds in the presence of oxygen containing gas at the catalyst regeneration temperature.
    Type: Grant
    Filed: May 10, 1983
    Date of Patent: November 27, 1984
    Assignee: Ashland Oil, Inc.
    Inventors: William P. Hettinger, Jr., H. Wayne Beck, James D. Carruthers, Edward B. Cornelius, Stephen M. Kovach, James L. Palmer
  • Patent number: 4480047
    Abstract: A catalyst nominally containing zeolite, preferably HY zeolite and/or ultrastable HY zeolite, clay, alumina and an acidic silica-alumina co-gel matrix. The zeolite is preferably partially exchanged with high La/Ce ratio solution in a wetting step, and rare earths are precipitated onto the matrix. The catalyst has high metals tolerance and is capable of cracking heavy reduced crude oils, producing higher LCO/slurry oil ratio.
    Type: Grant
    Filed: April 7, 1983
    Date of Patent: October 30, 1984
    Assignee: Ashland Oil, Inc.
    Inventors: H. Wayne Beck, James D. Carruthers, Edward B. Cornelius, Ronald A. Kmecak, Stephen M. Kovach, William P. Hettinger, Jr.
  • Patent number: 4457833
    Abstract: An improved process and catalyst for economically converting carbo-metallic oils to lighter products. This process is practiced in accordance with effective metals management, carbon management and catalyst activity management combined with feed atomization-vaporization, efficient stripping of carbonaceous material from the coked catalyst, exothermic and endothermic removal of hydrocarbonaceous material to effectively maintain the RCC unit in heat balance. This reduced crude cracking process is practiced with a new and improved catalyst composition identified as RCCC-1 Special that is characterized by the following composition; at least 30 wt % rare earth exchanged "Y" faujasite crystalline zeolite with a silica to alumina ratio of at least 5 of a high lanthanum to cerium ratio and residual sodium content less than 0.30 wt %, is provided with a pore volume greater than 0.35 cc/gm. and comprises a clay matrix material that may or may not be acidic with pore size openings in the range of 500 to 2,000 angstroms.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: July 3, 1984
    Assignee: Ashland Oil, Inc.
    Inventors: Oliver J. Zandona, William P. Hettinger, Jr., Stephen M. Kovach, Hubert W. Beck
  • Patent number: 4450241
    Abstract: A process is disclosed for the conversion of high boiling oil feeds having a significant level of Conradson carbon components and metals to form lighter oil products by contacting the feed under catalytic conversion conditions with a catalyst containing one of a select group of metal additives to catalyze the endothermic removal of carbon with CO.sub.2. Conversion conditions are such that hydrocarbonaceous material and metals are deposited to deactivate the catalyst in the conversion zone. Deactivated catalyst is partially regenerated in the presence of carbon dioxide containing gas before or after oxygen regeneration at a temperature below 1600.degree. F. to provide a regenerated catalyst which is recycled to the conversion zone for further contact with fresh feed. The metal additive is present on the catalyst in an amount sufficient to catalyze the endothermic removal of carbonaceous material in the presence of a carbon dioxide rich gas at regeneration temperature below 1500.degree. F.
    Type: Grant
    Filed: August 16, 1982
    Date of Patent: May 22, 1984
    Assignee: Ashland Oil, Inc.
    Inventors: William P. Hettinger, Jr., Stephen M. Kovach, James F. Hoffman
  • Patent number: 4437981
    Abstract: The invention is concerned with substantially eliminating the deactivating effects of alkaline materials and metal contaminants and compounds thereof existing in crude oils by first desalting the crude oil and thereafter adding a select neutralizing and immobilizing metal component or compound thereof to said desalted crude oil prior to and/or during distillation thereof to obtain select fractions subsequently catalytically processed as by catalytic cracking with a crystalline zeolite containing catalyst.
    Type: Grant
    Filed: November 22, 1982
    Date of Patent: March 20, 1984
    Assignee: Ashland Oil, Inc.
    Inventor: Stephen M. Kovach
  • Patent number: 4432863
    Abstract: A process is disclosed for economically converting carbo-metallic oils to liquid fuel products by bringing a converter feed containing 650.degree. F.+ material characterized by a carbon residue on pyrolysis of at least about 1 and by containing at least about 4 ppm of Nickel Equivalents of heavy metals, including nickel, into contact with a particulate cracking catalyst in a progressive flow type reactor having an elongated conversion zone. The suspension of catalyst and feed in the reactor has a vapor residence time in the range of about 0.5 to about 10 seconds, a temperature of about 900.degree. F. to about 1400.degree. F. and a pressure of about 10 to about 50 pounds per square inch absolute for causing a conversion per pass in the range of about 50 to about 90 percent while depositing nickel on the catalyst and coke on the catalyst in amounts in the range of about 0.3 to about 3 percent by weight.
    Type: Grant
    Filed: July 20, 1981
    Date of Patent: February 21, 1984
    Assignee: Ashland Oil, Inc.
    Inventors: George D. Myers, deceased, William P. Hettinger, Jr., Stephen M. Kovach, Oliver J. Zandona
  • Patent number: 4432890
    Abstract: A process is disclosed for the conversion of a hydrocarbon oil feed having a significant content of vanadium to lighter oil products by contacting the feed under conversion conditions in a conversion zone with a catalyst containing a metal additive to immobilize vanadium compounds. Conversion conditions are such that coke and vanadium are deposited on the catalyst in the conversion zone. Coked catalyst is regenerated in the presence of an oxygen containing gas at a temperature sufficient to remove the coke and regenerated catalyst is recycled to the conversion zone for contact with fresh feed. The metal additive is present on the catalyst in an amount sufficient to immobilize the vanadium compounds in the presence of oxygen containing gas at the catalyst regeneration temperature.
    Type: Grant
    Filed: March 30, 1981
    Date of Patent: February 21, 1984
    Assignee: Ashland Oil, Inc.
    Inventors: H. Wayne Beck, James D. Carruthers, Edward B. Cornelius, William P. Hettinger, Jr., Stephen M. Kovach, James L. Palmer, Oliver J. Zandona
  • Patent number: 4425259
    Abstract: A process is disclosed for the conversion of high boiling oil feeds having a significant level of Conradson carbon components and metals to form lighter oil products by contacting the feed under catalytic conversion conditions with a catalyst containing one of a select group of metal additives to catalyze the endothermic removal of carbon with CO.sub.2. Conversion conditions are such that hydrocarbonaceous material and metals are deposited to deactivate the catalyst in the conversion zone. Deactivated catalyst is partially regenerated in the presence of carbon dioxide containing gas before or after oxygen regeneration at a temperature below 1600.degree. F. to provide a regenerated catalyst which is recycled to the conversion zone for further contact with fresh feed. The metal additive is present on the catalyst in an amount sufficient to catalyze the endothermic removal of carbonaceous material in the presence of a carbon dioxide rich gas at regeneration temperature below 1500.degree. F.
    Type: Grant
    Filed: August 5, 1981
    Date of Patent: January 10, 1984
    Assignee: Ashland Oil, Inc.
    Inventors: William P. Hettinger, Jr., Stephen M. Kovach, James F. Hoffman
  • Patent number: 4412914
    Abstract: A process is disclosed for decarbonization-demetallization of a poor quality residual oil feed boiling above about 650.degree. F. and comprising substantial Conradson carbon components to provide a higher grade of oil feed by contacting the poor quality oil feed with sorbent particle material containing one or more metal additives selected to catalyze the endothermic removal of coke with CO.sub.2. Sorbent decarbonization conditions are selected so that substantial quantities of carbonaceous material and metals are deposited on the sorbent in the decarbonizing zone. Sorbent material with metals and hydrocarbonaceous deposits is regenerated in the presence of an oxygen and carbon dioxide containing gas streams in separate sorbent regeneration zones at a temperature sufficiently elevated to remove residual coke to a desired low level. Regenerated sorbent particle material at an elevated temperature below about 1500.degree. F.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: November 1, 1983
    Assignee: Ashland Oil, Inc.
    Inventors: William P. Hettinger, Jr., James F. Hoffman, Stephen M. Kovach