Patents by Inventor Thomas R. Stein

Thomas R. Stein 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: 4324645
    Abstract: Residual oil fractions are upgraded in that CCR is selectively removed without undue hydrogen consumption by hydroprocessing with a catalyst comprises a single metal such as molybdenum, tungsten, nickel, iron or palladium or multimetallic combination of such metals, excluding, however, active desulfurization compositions such as nickel molybdenum and nickel-tungsten. Said catalyst is characterized as having greater than about 50% of its pore volume contribution in pores having diameters in the range of between about 100 and 200 Angstroms. The product of such hydroprocessing is a particularly preferable feedstock for coking to give more liquid yield and less coke make.
    Type: Grant
    Filed: May 7, 1980
    Date of Patent: April 13, 1982
    Assignee: Mobil Oil Corporation
    Inventors: Philip J. Angevine, Thomas R. Stein
  • Patent number: 4247388
    Abstract: A method is disclosed for the improvement of catalyst performance in catalytic hydrodewaxing of both petroleum and synthetic hydrocarbon feedstocks utilizing a special group of acidic crystalline aluminosilicate zeolites such as those of the ZSM-5 type which involves treatment of said zeolites in order to adjust their initially high alpha activity to within a range of 55-150 alpha prior to use as catalysts in a hydrodewaxing operation.
    Type: Grant
    Filed: June 27, 1979
    Date of Patent: January 27, 1981
    Assignee: Mobil Oil Corporation
    Inventors: Frederick Banta, Henry R. Ireland, Thomas R. Stein, Robert C. Wilson, Jr.
  • Patent number: 4229282
    Abstract: An improved process for catalytically dewaxing a hydrocarbon oil is disclosed. In this process the waxy oil is contacted in the presence of hydrogen with a dense zeolitic dewaxing catalyst associated with a nickel-tungsten hydrogenation component. The dewaxed oil has unexpectedly good stability and a low bromine number compared with prior-art processed oils. The process may be used to dewax crude oils, fuel oil fractions and lubricating oils.
    Type: Grant
    Filed: April 27, 1979
    Date of Patent: October 21, 1980
    Assignee: Mobil Oil Corporation
    Inventors: Alan W. Peters, Emmerson Bowes, Thomas R. Stein
  • Patent number: 4221654
    Abstract: Compatibility of solvent refined coal and other coal liquids with conventional petroleum fuels is improved by moderate catalytic hydrogenation of the solvent refined coal liquid to a hydrogen to carbon atomic ratio less than that of corresponding petroleum fractions. As degree of hydrogenation of solvent refined coal is increased, compatibility with petroleum fractions of like boiling range increases to a maximum measured by precipitation of sediment from the blend of equal parts of the two fuels. That maximum is achieved at a hydrogen/carbon ratio below that of the corresponding petroleum fractions. As that ratio is increased toward the ratio characteristic of a like petroleum fraction, compatibility is impaired.
    Type: Grant
    Filed: June 7, 1978
    Date of Patent: September 9, 1980
    Assignee: Electric Power Research Institute
    Inventors: Thomas R. Stein, Roland H. Heck, Albert V. Cabal
  • Patent number: 4200521
    Abstract: In the hydroprocessing of blends of solvent refined coal and recycle solvent, small pore hydrotreating catalysts cause separation of a solid phase from treating blends containing high concentration of solvent refined coal.
    Type: Grant
    Filed: June 7, 1978
    Date of Patent: April 29, 1980
    Assignee: Electric Power Research Institute, Inc.
    Inventors: Thomas R. Stein, Roland H. Heck, Michael J. Dabkowski
  • Patent number: 4192734
    Abstract: A processing arrangement for upgrading crude oil by the combination of hydrodewaxing, and fluid catalytic cracking or hydrocracking to maximize the production of low pour, high quality distillate fuel oil is particularly described. Cracking of atmospheric bottoms of residua, hydrodewaxing atmospheric heavy gas oil and hydrodesulfurizing light gas oil material to produce diesel fuel oil products are primary components of the processing arrangement.
    Type: Grant
    Filed: July 10, 1978
    Date of Patent: March 11, 1980
    Assignee: Mobil Oil Corporation
    Inventors: Robert T. Pavlica, Thomas R. Stein, Carl W. Streed
  • Patent number: 4082695
    Abstract: The disclosure concerns the demetalation and desulfurization of metal and sulfur containing petroleum oils, preferably those containing residua hydrocarbon components, through the use of a catalyst comprising a hydrogenating component composited on a refractory base, preferably an alumina, whose pores are substantially distributed over a narrow 100A to 200A diameter range, but also having at least about 5% of its pores of a diameter greater than 500A.
    Type: Grant
    Filed: July 22, 1976
    Date of Patent: April 4, 1978
    Assignee: Mobil Oil Corporation
    Inventors: Edward J. Rosinski, Thomas R. Stein, Ronald H. Fischer
  • Patent number: 4071574
    Abstract: Upgrading a Fischer-Tropsch synthesis product by separating a 350.degree. to 850.degree. F product fraction thereof into a 650.degree. F minus fraction and a 650.degree. F plus fraction; separating the 650.degree. F minus fraction to provide a more narrow 350.degree. to 650.degree. F fraction; combining the 650.degree. F plus fraction with a portion of the 350.degree. to 650.degree. F fraction to form a wide boiling range feed material; contacting this formed wide boiling range feed material, together with hydrogen, with a special catalyst comprising a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least 12 and a constraint index of 1 to 12, at a temperature of about 500.degree. to 800.degree. F, a hydrogen partial pressure of about 100 to 800 psia and a space velocity of about 0.5 to 5 LHSV to produce a converted product thereof separating the zeolite conversion product to recover a 350.degree. F minus fraction from a 350.degree. F plus fractions; and separating the 350.degree.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: January 31, 1978
    Assignee: Mobil Oil Corporation
    Inventors: Donald Milstein, Thomas R. Stein
  • Patent number: 4067797
    Abstract: A hydrocarbon fuel oil composition comprising a blend of untreated low pour-point distillate oil and a higher pour-point catalytically hydrodewaxed distillate oil. The blend has an unexpectedly low pour point and cloud point. Dewaxing is effected with a ZSM-5 type catalyst.
    Type: Grant
    Filed: January 16, 1976
    Date of Patent: January 10, 1978
    Assignee: Mobil Oil Corporation
    Inventors: Nai Yuen Chen, Bernard M. Gillespie, Henry R. Ireland, Thomas R. Stein
  • Patent number: 4053532
    Abstract: The product of Fischer-Tropsch Synthesis is separated to recover a product boiling above about 400.degree. F which is thereafter processed over a selective crystalline zeolite under hydrodewaxing conditions promoting the formation of fuel oil and gasoline products. Improving start up and operation of the process in the presence of a ZSM5 crystalline zeolite is described.
    Type: Grant
    Filed: December 5, 1975
    Date of Patent: October 11, 1977
    Assignee: Mobil Oil Corporation
    Inventors: Henry R. Ireland, Thomas R. Stein
  • Patent number: 4052477
    Abstract: The product of Fischer-Tropsch Synthesis is separated to recover a C.sub.5 -400.degree. F liquid fraction which is thereafter hydrogenated in order to saturate diolefins and contacted with a ZSM-5 type zeolite under conditions of elevated temperature and pressure so as to obtain gasoline of a higher octane rating. The contact with the ZSM-5 zeolite is preferably in the presence of added hydrogen.
    Type: Grant
    Filed: May 7, 1976
    Date of Patent: October 4, 1977
    Assignee: Mobil Oil Corporation
    Inventors: Henry R. Ireland, Alan W. Peters, Thomas R. Stein
  • Patent number: 4046829
    Abstract: The product of Fischer-Tropsch Synthesis is separated to recover a product boiling above and below about 400.degree. F which is thereafter separately process over different beds of ZSM-5 crystalline zeolite under conditions promoting the formation of fuel oil products and gasoline of a higher octane rating.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: September 6, 1977
    Assignee: Mobil Oil Corporation
    Inventors: Henry R. Ireland, Thomas R. Stein
  • Patent number: 4045505
    Abstract: The product of Fischer-Tropsch Synthesis is separated to recover a C.sub.5 -400.degree. F liquid fraction which is thereafter contacted with a ZSM-5 type zeolite in the presence of added hydrogen under conditions of elevated temperature and pressure so as to obtain gasoline of a higher octane rating.
    Type: Grant
    Filed: January 21, 1976
    Date of Patent: August 30, 1977
    Assignee: Mobil Oil Corporation
    Inventors: Henry R. Ireland, Alan W. Peters, Thomas R. Stein
  • Patent number: 4044064
    Abstract: Upgrading a fraction of a heavy Fischer-Tropsch oil to jet fuel by hydropretreating a 350.degree. to 850.degree. F boiling fraction; separating the hydrotreated product into a 650.degree. F minus and a 650.degree. F plus fraction, separating the650.degree. F minus fraction to provide a 350.degree. F minus naphtha boiling range fraction and a 350.degree. to 650.degree. F light distillate fraction; distilling the 350.degree. to 650.degree. F hydrotreated fraction to provide a fraction boiling in the range of 350.degree. F to 550.degree. F separate from a 550.degree. to 650.degree. F fraction processing either of the 650.degree. F plus fraction above separated or the 350.degree. to 550.degree. F boiling fraction above obtained over a catalyst comprising a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least 12 and a constraint index of 1 to 12 with hydrogen, at a temperature of about 500.degree. to 800.degree.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: August 23, 1977
    Assignee: Mobil Oil Corporation
    Inventors: Donald Milstein, Thomas R. Stein
  • Patent number: 4044063
    Abstract: Upgrading of Fischer-Tropsch synthesis product is accomplished by water washing the product effluent to separate oxygenates therefrom, separating the washed effluent to recover a C.sub.3 -C.sub.4 rich fraction, a C.sub.5 plus gasoline fraction, a light fuel oil fraction and a heavy fuel oil fraction which is subjected to hydrodewaxing conditions to produce additional light fuel oil and gasoline boiling product. The light fuel oil products were hydrotreated and the synthesis gasoline is octane improved with ZSM5 crystalline zeolite.
    Type: Grant
    Filed: September 18, 1975
    Date of Patent: August 23, 1977
    Assignee: Mobil Oil Corporation
    Inventors: Henry R. Ireland, Thomas R. Stein
  • Patent number: 4041097
    Abstract: A Fischer-Tropsch synthesis effluent is separated into gaseous, gasoline boiling, light fuel oil and heavy fuel oil products for upgrading to more desirable products by conversion over a special class of crystalline zeolites suitable for the purpose. Water washing of the separated fractions may be practiced to recover oxygenates from any separated fraction before further upgrading of oxygenates and hydrocarbons.
    Type: Grant
    Filed: September 18, 1975
    Date of Patent: August 9, 1977
    Assignee: Mobil Oil Corporation
    Inventors: Henry R. Ireland, Thomas R. Stein
  • Patent number: 4007131
    Abstract: This invention concerns a method of regenerating hydroprocessing catalyst. The invention deals with a method of regenerating hydroprocessing catalyst contained within a reactor, said catalyst having been deactivated by "coke" deposition, comprising: passing into an inlet of said reactor, through said catalyst to be regenerated, and out an outlet of said reactor, a stream of substantially inert gases initially containing about 0.1 to 4.0 volume percent oxygen at an initial temperature of about 600.degree. to 1200.degree. F, a pressure of at least about 100 psig and a space velocity of at least about 50 GHSV; and increasing said oxygen concentration to about 1.0 to 10.0 volume % and/or increasing the temperature to about 800.degree. to 1200.degree. F upon detection of oxygen at said outlet of said catalyst containing reactor.
    Type: Grant
    Filed: September 22, 1975
    Date of Patent: February 8, 1977
    Assignee: Mobil Oil Corporation
    Inventors: Bernard M. Gillespie, Henry R. Ireland, Thomas R. Stein
  • Patent number: 3956102
    Abstract: A method for the operation of a hydrodewaxing unit wherein a petroleum distillate is separated into two streams, one having a pour point of above about 30.degree.F, and the other having a pour point of less than about 30.degree.F., the 30.degree.F plus pour point fraction is treated in a hydrodewaxing unit with a ZSM-5 type catalyst under hydroprocessing conditions while the 30.degree.F. minus pour point portion is untreated and combined with the hydrodewaxed product. The process yields a net production of hydrogen, and exhibits excellent catalyst aging characteristics.
    Type: Grant
    Filed: June 5, 1974
    Date of Patent: May 11, 1976
    Assignee: Mobil Oil Corporation
    Inventors: Nai Yuen Chen, Bernard M. Gillespie, Henry R. Ireland, Thomas R. Stein
  • Patent number: 3931052
    Abstract: This disclosure concerns the demetalation and desulfurization of metal and sulfur containing petroleum oils, preferably those containing residua hydrocarbon components, through the use of a catalyst comprising a hydrogenating component composited on a refractory base, preferably an alumina, whose pores are substantially distributed over a narrow 180A to 300A diameter range.
    Type: Grant
    Filed: March 3, 1975
    Date of Patent: January 6, 1976
    Assignee: Mobil Oil Corporation
    Inventors: Stephen M. Oleck, Thomas R. Stein, Howard S. Sherry, Donald Milstein