Inorganic Acid Patents (Class 208/223)
  • Patent number: 9845442
    Abstract: A hydrodynamic cavitation method for degumming triglyceride oil is used to increase oil yield and reduce impurities. The residence time of the oil for degumming in the cavitation field is reduced to enhance removal of impurities such as phosphorus without prolonged exposure of the oil to cavitation conditions. The mass transfer of impurities from an oil phase to non-oil components or water is carried out in a non-cavitational, mass transfer reactor positioned downstream of a hydrodynamic cavitation device. A separation step can be used to remove the phosphatides and other impurities from the treated oil to form a purified oil product.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: December 19, 2017
    Assignee: ARISDYNE SYSTEMS, INC.
    Inventors: Oleg Kozyuk, Peter Reimers
  • Patent number: 9592495
    Abstract: An ammonia synthesis catalyst synthesizing ammonia from nitrogen in a presence of moisture is provided. The ammonia synthesis catalysis includes a catalyst particle including an inorganic material that has a photocatalytic function and an inorganic acid. The catalyst particle is preferably an n-type semiconductor and includes oxide material including at least titanium preferably. The inorganic acid preferably corresponds to at least one of perchloric acid, hydrochloric acid, sulfuric acid, and phosphoric acid.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: March 14, 2017
    Assignee: DENSO CORPORATION
    Inventors: Masaki Yoshinaga, Hiroaki Yotou, Goh Iijima, Yoshimasa Hijikata
  • Patent number: 8894843
    Abstract: A method of upgrading a heteroatom-containing hydrocarbon feed by removing heteroatom contaminants is disclosed. The method includes contacting the heteroatom-containing hydrocarbon feed with an oxidant and an immiscible acid to oxidize the heteroatoms, contacting the oxidized- heteroatom-containing hydrocarbon feed with caustic and a selectivity promoter, and removing the heteroatom contaminants from the heteroatom-containing hydrocarbon feed. The oxidant may be used in the presence of a catalyst.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: November 25, 2014
    Assignee: Auterra, Inc.
    Inventors: Jonathan P. Rankin, Jennifer L. Vreeland, Kyle E. Litz, Tracey M. Jordan, Mark N. Rossetti, Eric H. Burnett, Trent A. McCaskill
  • Publication number: 20140299512
    Abstract: Processes are disclosed for reducing the sulphur content of a hydrocarbon material containing sulphur compounds.
    Type: Application
    Filed: March 17, 2014
    Publication date: October 9, 2014
    Applicant: Ultraclean Fuel Pty Ltd.
    Inventors: Gordon John Gargano, Marc E. Halpern
  • Publication number: 20120285866
    Abstract: A method of upgrading a heteroatom-containing hydrocarbon feed by removing heteroatom contaminants is disclosed. The method includes contacting the heteroatom-containing hydrocarbon feed with an oxidant to oxidize the heteroatoms, contacting the oxidized-heteroatom-containing hydrocarbon feed with caustic and a selectivity promoter, and removing the heteroatom contaminants from the heteroatom-containing hydrocarbon feed. The oxidant may be used in the presence of a catalyst.
    Type: Application
    Filed: July 27, 2012
    Publication date: November 15, 2012
    Inventors: Kyle E. Litz, Jennifer L. Vreeland, Jonathan P. Rankin, Mark N. Rossetti, Tracey M. Jordan, Trent A. McCaskill
  • Patent number: 8298404
    Abstract: A reaction system and method for removing heteroatoms from oxidized-heteroatom-containing hydrocarbon streams and products derived therefrom are disclosed. An oxidized-heteroatom-containing hydrocarbon feed is reacted in a reaction system thereby forming non-ionic hydrocarbon products. The products derived therefrom are useful as transportation fuels, lubricants, refinery intermediates, or refinery feeds.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: October 30, 2012
    Assignee: Auterra, Inc.
    Inventors: Kyle E. Litz, Jennifer L. Vreeland, Jonathan P. Rankin, Thomas W. DeLancey, Timothy A. Thompson
  • Patent number: 8241490
    Abstract: A method of upgrading a heteroatom-containing hydrocarbon feed by removing heteroatom contaminants is disclosed. The method includes contacting the heteroatom-containing hydrocarbon feed with an oxidant to oxidize the heteroatoms, contacting the oxidized-heteroatom-containing hydrocarbon feed with caustic and a selectivity promoter, and removing the heteroatom contaminants from the heteroatom-containing hydrocarbon feed. The oxidant may be used in the presence of a catalyst.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: August 14, 2012
    Assignee: Auterra, Inc.
    Inventors: Kyle E. Litz, Jennifer L. Vreeland, Jonathan P. Rankin, Mark N. Rossetti, Tracey M. Jordan
  • Patent number: 8197671
    Abstract: A method of upgrading a heteroatom-containing hydrocarbon feed by removing heteroatom contaminants is disclosed. The method includes contacting the heteroatom-containing hydrocarbon feed with an oxidant and an immiscible acid to oxidize the heteroatoms, contacting the oxidized-heteroatom-containing hydrocarbon feed with caustic and a selectivity promoter, and removing the heteroatom contaminants from the heteroatom-containing hydrocarbon feed. The oxidant may be used in the presence of a catalyst.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: June 12, 2012
    Assignee: Auterra, Inc.
    Inventors: Jonathan P. Rankin, Jennifer L. Vreeland, Kyle E. Litz, Tracey M. Jordan, Mark N. Rossetti, Eric H. Burnett
  • Publication number: 20120091040
    Abstract: A method for desulfurization of heavy fuel oil using ferrate compounds by mixing fuel oil containing sulfur compounds with a solvent and forming a fuel oil solvent mixture, dissolving the sulfur compounds present in the fuel oil solvent mixture. Adding a liquid ferrate solution to the fuel oil solvent mixture produces oxidized sulfur compounds, in solution. An absorbing agent is added to remove thed oxidized sulfur compounds from said solution.
    Type: Application
    Filed: October 19, 2011
    Publication date: April 19, 2012
    Applicant: Florida Institute of Technology, Attention Office for Research and Technology Transfer
    Inventors: Virender K. Sharma, Abdullah Al-Abduly
  • Publication number: 20110179698
    Abstract: The present invention relates to a process for producing clean petroleum fuel by reducing sulfur content, and raising the Cetane Number to a value above 50, in a process that may be carried out at one atmospheric pressure.
    Type: Application
    Filed: January 2, 2011
    Publication date: July 28, 2011
    Inventor: Hassan Agha
  • Patent number: 7947166
    Abstract: The present invention relates to a method for treating a feed corresponding to a pyrolysis gasoline, comprising: a) at least one stage of selective hydrogenation of the feed, referred to as HD1, b) fractionating in one or more distillation columns the effluent from stage a) in order to produce at least one light C5 cut, an intermediate C6 or C6-C7 or C6-C8 cut intended for aromatics production, a heavy C7+ or C8+ or C9+ cut intended for gasoline production, c) at least one stage of hydrodesulfurization and deep hydrogenation of the intermediate cut, referred to as HD2, d) at least one stage of alkylation of the heavy C7+, C8+ or C9+ cut consisting of a treatment on an acid catalyst allowing weighting of the sulfur compounds, e) at least one stage of distillation of the effluent from stage d), intended to produce a light fraction that can be directly used as a low-sulfur gasoline base, and a heavy C11+ or C12+ fraction rich in sulfur compounds, used as middle distillate or fuel oil.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: May 24, 2011
    Assignee: IFP Energies Nouvelles
    Inventors: Florent Picard, Quentin Debuisschert, Annick Pucci
  • Patent number: 7892418
    Abstract: The present invention relates to a process for reducing sulfur content in petroleum fuel, such as diesel fuel, and raising the Cetane Number to a value above 50.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: February 22, 2011
    Assignee: Oil Tech SARL
    Inventor: Hassan Agha
  • Patent number: 7811538
    Abstract: The method allows to remove mercaptans contained in a gaseous feed comprising hydrocarbons by carrying out the following stages: a) contacting, in a reactor R1, gaseous feed 1 with a liquid stream 13 comprising olefins, in the presence of a first acid catalyst so that the mercaptans react with the olefins so as to form sulfides, b) discharging an effluent 3 from reactor R1 and separating the effluent into a gas phase and a liquid phase so as to obtain a mercaptan-depleted treated gas 4 and a sulfide-laden liquid, c) separating the sulfide-laden liquid into a first fraction 6 and a second fraction 5, the volume flow rate of first fraction 6 being at least three times higher than the volume flow rate of second fraction 5, d) recycling first fraction 6 to stage a) as a first portion of said liquid stream to be fed into said reactor R1, e) regenerating second fraction 5 by cracking so as to obtain a sulfide-depleted second fraction 2 that is recycled to stage a) as a second portion of said liquid stream.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: October 12, 2010
    Assignee: Institut Francais du Petrole
    Inventors: Renaud Cadours, Eric Lemaire, Julia Magne-Drisch
  • Publication number: 20100155303
    Abstract: Disclosed is a method for desulfurization of a hydrocarbon oil (e.g., kerosene which is a raw fuel for a fuel cell) which can effectively remove benzothiophenes and dibenzothiophenes contained in the hydrocarbon oil under mild conditions to produce a desulfurized hydrocarbon oil having a significantly low sulfur content. The method comprises the step of desulfurizing the hydrocarbon oil such as kerosene containing benzothiophenes and dibenzothiophenes with the combination of a solid acid-type desulfurizing agent and an active carbon-type desulfurizing agent. This method can provide a hydrocarbon oil having a significantly low sulfur content. By using the hydrocarbon oil, the operation or maintenance of a fuel cell system can be made easily, a fuel cell itself can be miniaturized in size, and the lifetime of a desulfurizing agent in a desulfurization apparatus equipped in a fuel cell system can be prolonged.
    Type: Application
    Filed: July 25, 2006
    Publication date: June 24, 2010
    Applicant: JAPAN ENERGY CORPORATION
    Inventors: Yasuhiro Toida, Toru Saito
  • Publication number: 20100140142
    Abstract: A crude oil which contains at least 0.1 wt % unstable sulfur compounds is treated in a reaction zone at low temperature to convert at least 50 wt % of the unstable sulfur compounds contained therein. The reaction and removal of sulfur from the crude may be facilitated by contacting the crude oil with a catalytic material in the presence of a stripping fluid.
    Type: Application
    Filed: December 10, 2008
    Publication date: June 10, 2010
    Inventors: Huping Luo, Zhen Zhon, Lin Li, Alice He, Daniel Chinn, Graham Forder, Lyman Young, Shabbir Husain, William Schinski
  • Publication number: 20090314688
    Abstract: A method for degumming and/or refining crude oil containing impurities involving mixing the crude oil with degumming agents, i.e., water or acid, and subjecting the mixture to flow-through, hydrodynamic cavitation processing. The cavitational processing transfers impurities in the crude oil to a water phase for easier separation. The water phase may be separated from the oil phase by commonly available separation methods.
    Type: Application
    Filed: June 15, 2009
    Publication date: December 24, 2009
    Inventors: Roman Gordon, Igor Gorodnitsky, Varvara Grichko
  • Publication number: 20090288982
    Abstract: The present invention relates to a process for reducing sulfur content in petroleum fuel, such as diesel fuel, and raising the Cetane Number to a value above 50.
    Type: Application
    Filed: May 26, 2009
    Publication date: November 26, 2009
    Inventor: Hassan Agha
  • Patent number: 7252756
    Abstract: A process is disclosed for the production of refinery transportation fuel or components for refinery blending of transportation fuels having a reduced amount of sulfur and/or nitrogen-containing impurities. The process involves contacting a hydrocarbon feedstock containing the above impurities with an immiscible phase containing hydrogen peroxide and acetic acid in an oxidation zone to selectively oxidize the impurities. After a gravity phase separation, the hydrocarbon phase containing any remaining oxidized impurities, is passed to an extraction zone wherein aqueous acetic acid is used to extract a portion of any remaining oxidized impurities. A hydrocarbon stream having reduced impurities can then be recovered. The acetic acid phase effluents from the oxidation and the extraction zones can then be passed to a common separation zone for recovery of the acetic acid and for optional recycle back to the oxidation and extraction zones.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: August 7, 2007
    Assignee: BP Corporation North America Inc.
    Inventors: William H. Gong, Larry W. Kruse, George A. Huff, Michael Muskett
  • Patent number: 7192565
    Abstract: The gaseous feed flowing in through line 1 is contacted in contacting zone ZA with a liquid solvent flowing in through line 2. The solvent comprises between 0.001% and 100% by weight of a liquid olefin. Contacting in zone ZA is carried out in the presence of an acid catalyst. The purified gaseous feed is discharged from zone ZA through line 3. The sulfide-laden solvent is discharged through line 4, then regenerated in unit RE. The regenerated solvent is recycled through lines 7 and 2 to zone ZA.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: March 20, 2007
    Assignee: Institut Francais du Petrole
    Inventors: Patrick Briot, Renaud Cadours, Sophie Drozdz, Fabrice Lecomte
  • Patent number: 7019188
    Abstract: The present invention relates to the separation of olefins, diolefins and lower aromatics from mixed streams of hydrocarbons using ionic liquids in the absence of metal compounds. The present invention eliminates the metal complexes conventionally used in such separation and thus reduces the complexity of the process.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: March 28, 2006
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Ronald Scott Smith, Patricio S Herrera, Sean Reynolds
  • Patent number: 6849774
    Abstract: Methods for separating di-olefins from mono-olefins, and olefins from non-olefins such as paraffins, oxygenates and aromatics; are provided. The methods use metal salts which complex both mono-olefins and di-olefins, but which selectively complex di-olefins in the presence of mono-olefins. The metal salts are dissolved or suspended in ionic liquids, which tend to have virtually no vapor pressure. Preferred salts are Group IB salts, more preferably silver and copper salts. A preferred silver salt is silver tetrafluoroborate. A preferred copper salt is silver CuOTf. Preferred ionic liquids are those which form stable solutions, suspensions or dispersions of the metal salts, which do not dissolve unwanted non-olefins, and which do not isomerize the mono- or di-olefins. The equivalents of the metal salt can be adjusted so that di-olefins are selectively adsorbed from mixtures of mono- and di-olefins. Alternatively, both mono- and di-olefins can be adsorbed, and the mono-olefins selectively desorbed.
    Type: Grant
    Filed: December 31, 2001
    Date of Patent: February 1, 2005
    Assignee: Chevron U.S.A. Inc.
    Inventors: Laura C. Boudreau, Michael S. Driver, Curt L. Munson, William L. Schinski
  • Patent number: 6638419
    Abstract: A method for obtaining oil products such as diesel fuel with improved quality, from a gas oil fraction containing organosulphur compounds such as dibenzenethiophenes and/or their derivatives, with initial and final boiling points generally ranging between about 170 and 480° C. The method includes at least two steps which consist in: (a) liquid-liquid extraction wherein the diesel fuel fraction is contacted with a solvent so as to obtain a gas oil-type raffinate with low content of sulphur and aromatic compounds and an extract rich in solvent and with high content of sulphur and aromatic compounds; (b) oxidation of the extract sulphur compounds so as to obtain, after separation, a heavy gas oil-type hydrocarbon effluent with low sulphur content, and a residue comprising oxidased organosulphur compounds. The invention also concerns oil products obtained by said method which can be used either for the formation of fuel for internal combustion engine with compression ignition (of the diesel type) or as fuel.
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: October 28, 2003
    Assignee: Total Raffinage Distribution S.A.
    Inventors: Pedro Da Silva, Raphaƫl Le Gall
  • Patent number: 6596914
    Abstract: A multi-step process for desulfurizing liquid petroleum fuels that also removes nitrogen-containing compounds and aromatics. The process steps are: thiophene extraction; thiophene oxidation; thiophene-oxide and -dioxide extraction; raffinate solvent recovery and polishing; extract solvent recovery; and recycle-solvent purification. The thiophene oxidation is accomplished with hydrogen peroxide and the extraction solvent is acetic acid in combination with secondary solvents. The operating conditions in the process are relatively mild at near ambient pressure and less than 145° C. throughout the process, and the only chemical consumed in the process is hydrogen peroxide. The process design can be modified to accommodate a variety of liquid hydrocarbon feeds.
    Type: Grant
    Filed: August 25, 2001
    Date of Patent: July 22, 2003
    Inventors: Walter Gore, Steve Bonde, Geoffrey E. Dolbear, Ebbe R. Skov
  • Patent number: 6406616
    Abstract: A process for desulfurizing hydrocarbons such as gasoline and similar petroleum products to reduce the sulfur content to a range of from about 2 to 15 ppm sulfur without affecting the octane rating is described. The sulfur containing hydrocarbon is contacted at slightly elevated temperatures with an oxidizing/extracting solution of formic acid, a small amount of hydrogen peroxide, and no more than about 25 wt % water.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: June 18, 2002
    Assignee: Unipure Corporation
    Inventors: Alkis S. Rappas, Vincent P. Nero, Stephen J. DeCanio
  • Patent number: 6402940
    Abstract: A process for desulfurizing fuels such as diesel oil and similar petroleum products to reduce the sulfur content to a range of from about 2 to 15 ppm sulfur is described. The sulfur containing fuel is contacted at slightly elevated temperatures with an oxidizing/extracting solution of formic acid, a small amount of hydrogen peroxide, and no more than about 25 wt % water. A removal process for separating substituted dibenzothiophene oxidation products from tile fuel is also described.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: June 11, 2002
    Assignee: Unipure Corporation
    Inventor: Alkis S. Rappas
  • Publication number: 20020029997
    Abstract: A process for desulfurizing hydrocarbons such as gasoline and similar petroleum products to reduce the sulfur content to a range of from about 2 to 15 ppm sulfur without affecting the octane rating is described. The sulfur containing hydrocarbon is contacted at slightly elevated temperatures with an oxidizing/extracting solution of formic acid, a small amount of hydrogen peroxide, and no more than about 25 wt % water.
    Type: Application
    Filed: September 12, 2001
    Publication date: March 14, 2002
    Applicant: UniPure Corporation
    Inventors: Alkis S. Rappas, Vincent P. Nero, Stephen J. DeCanio
  • Patent number: 6339182
    Abstract: Methods for separating olefins from non-olefins, such as parafins, including cycloparaffins, oxygenates and aromatics, are provided. The methods use metal salts to complex olefins, allowing the non-olefins to be separated by a variety of methods, including decantation and distillation. The metal salts are dissolved in ionic liquids, which tend to have virtually no vapor pressure, and which poorly solubilize the non-olefins. Accordingly, the non-olefins phase separate well, and can be distilled without carrying over any of the ionic liquid into the distillate. Preferred salts are Group IB salts, more preferably silver salts. A preferred silver salt is silver tetrafluoroborate. Preferred ionic liquids are those which form stable solutions or dispersions of the metal salts, and which do not dissolve the non-olefins. Further, if the olefins are subject to isomerization, the ionic liquid is preferably relatively non-acidic.
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: January 15, 2002
    Assignee: Chevron U.S.A. Inc.
    Inventors: Curtis L. Munson, Laura C. Boudreau, Michael S. Driver, William L. Schinski
  • Patent number: 6303843
    Abstract: A process for removing sulfone from a liquid hydrocarbon containing a concentration of sulfone by mixing a liquid acid therewith and thereafter separating the resulting admixture into an acid phase and a hydrocarbon phase. The hydrocarbon phase has a concentration of sulfone less than such concentration in the liquid hydrocarbon.
    Type: Grant
    Filed: September 18, 1995
    Date of Patent: October 16, 2001
    Assignee: Phillips Petroleum Company
    Inventors: Richard L. Anderson, Bruce B. Randolph
  • Patent number: 5346614
    Abstract: A method and system for removing hydrogen sulfide from a continuous aqueous phase-containing fluid without forming a sulfur sludge. Oil is either initially present in the fluid or added thereto.
    Type: Grant
    Filed: November 10, 1992
    Date of Patent: September 13, 1994
    Assignee: Union Oil Company of California
    Inventors: Christohper R. Culver, Clifford D. Juengst
  • Patent number: 5288681
    Abstract: A catalyst prepared by the steps which comprise: (a) adding to an asphaltene-containing hydrocarbonaceous oil charge stock a metal compound, a heteropoly acid and water; (b) converting the metal compound and heteropoly acid within the charge stock by heating the oil to a temperature from about 120.degree. F. (43.degree. C.) to about 500.degree. F. (260.degree. C.) to produce at least one organometallic compound within the charge stock; and (c) converting the organometallic compound within the charge stock under hydroconversion conditions to produce the catalyst.
    Type: Grant
    Filed: October 16, 1992
    Date of Patent: February 22, 1994
    Assignee: UOP
    Inventor: John G. Gatsis
  • Patent number: 5225159
    Abstract: A method is provided for treating a sewage sludge-derived oil having a particular chemical composition, to reduce its odor. The method includes the first step of distilling the sewage sludge-derived oil to 150.degree. C. to remove water and volatile organic components, and then the essential step of circulating a gas consisting essentially of carbon dioxide gas therethrough.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: July 6, 1993
    Inventors: Henry Sawatzky, Terrance Giddings, Brian Farnand
  • Patent number: 5087350
    Abstract: A process for removing S and Fe and to reclaim V, Ni and Co from coal or oil and their derivatives or from minerals. The process is based upon an oxidative extraction performed with hypochlorous acid (HClO) whose oxidizing power is generated and regulated "in situ". The process is particularly applicable to the recovery of V from residual flexi-coke and to the recovery of Ni from coal.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: February 11, 1992
    Assignee: Laboratorios Paris, C.A.
    Inventor: Lucinda C. Paris-Marcano
  • Patent number: 5034118
    Abstract: Hydrogen sulfide can be conveniently removed from streams containing up to about 1,000 ppm of H.sub.2 S by reacting the latter with an olefin using a bed of an acidic solid catalyst in a non-oxidative process for the removal of hydrogen sulfide. The reaction can be effected under relatively mild conditions and is very selective for the removal of hydrogen sulfide without being attended by other unwanted reactions such as oligomerization, disproportionation, and skeletal rearrangement. Levels of hydrogen sulfide in the treated product of no more than about 5 ppm can be readily attained using a broad variety of acidic solid catalysts and unsaturated hydrocarbons, especially olefins.
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: July 23, 1991
    Assignee: UOP
    Inventors: Jeffery C. Bricker, Tamotsu Imai
  • Patent number: 5017280
    Abstract: A process for removing S and Fe and to reclaim V, Ni and Co from coal or oil and their derivatives or from minerals. The process is based upon an oxidative extraction performed with hypochlorous acid (HC10) whose oxidizing power is generated and regulated "in situ". The process is particularly applicable to the recovery of V from residual flexi-coke and to the recovery of Ni from coal.
    Type: Grant
    Filed: May 8, 1990
    Date of Patent: May 21, 1991
    Assignee: Laboratorios Paris, C.A.
    Inventor: Lucinda C. Paris-Marcano
  • Patent number: 4746420
    Abstract: A process for upgrading diesel oil comprising the steps of:(1) reacting the diesel oil with a nitrogenous treating agent;(2) contacting the diesel oil from step (1) above with(a) a primary solvent selected from the group consisting of organic solvents having a dipole moment of about 1.
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: May 24, 1988
    Assignee: REI Technologies, Inc.
    Inventors: Saeed T. Darian, Sayed-Hamid Arabshahi
  • Patent number: 4711713
    Abstract: A process for enhancement of the cetane number of a diesel fuel which in one embodiment comprises:(1) treating a diesel oil with a nitrogenous treating agent in a nitrogen amount, equivalent on a 100% nitric acid basis, to about 10 weight percent or less of the diesel oil feed;(2) separating unreacted nitrogenous treating agent from the diesel oil of step (1);(3) treating the diesel oil of step (2) with an inorganic alkali to produce a treated diesel oil; and(4) blending the treated diesel oil of step (3) with an untreated diesel oil to produce a blended diesel fuel such that the added nitrogen content in the blended diesel fuel is(a) about 300 ppm or less of nitrogen added when the diesel oil treated in step (1) is obtained from virgin diesel oil stock; or(b) about 450 ppm or less of nitrogen added when the diesel oil treated in step (1) is obtained from hydrotreated diesel oil stock.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: December 8, 1987
    Assignee: REI Technologies, Inc.
    Inventors: Hossein Zarrineghbal, Charles W. Quinlan
  • Patent number: 4643820
    Abstract: A process for enhancement of the cetane number of a diesel fuel which in one embodiment comprises:(1) treating a diesel oil with a nitrogenous treating agent in a nitrogen amount, equivalent on a 100% nitric acid basis, to about 10 weight percent or less of the diesel oil feed;(2) removing unreacted nitrogenous treating agent from the diesel oil of step (1) to produce a treated diesel oil, and;(3) blending the treated diesel oil of step (2) with an untreated diesel oil to produce a blended diesel fuel such that the added nitrogen content in the blended diesel fuel is(a) about 300 ppm or less of nitrogen added when the diesel oil treated in step (1) is obtained from virgin diesel oil stock; or(b) about 450 ppm or less of nitrogen added when the diesel oil treated in step (1) is obtained from hydrotreated diesel oil stock.
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: February 17, 1987
    Assignee: OxiProcessing
    Inventors: Hossein Zarrineghbal, James R. Kittrell, Saeed T. Darian
  • Patent number: 4606812
    Abstract: A process for hydrotreating carbonaceous materials is disclosed. The carbonaceous material is contacted with steam and with empirical hydrates of alkali metal hydrosulfides, monosulfides, or polysulfides. The process hydrocracks, hydrogenates, denitrogenates, demetallizes, and desulfurizes. In a preferred embodiment, hydrogen sulfide is co-fed to the reaction zone.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: August 19, 1986
    Assignee: Chemroll Enterprises, Inc.
    Inventor: Rollan Swanson
  • Patent number: 4518489
    Abstract: Basic nitrogen-containing compounds are removed from mineral oil, such as shale oil, by extraction with an immiscible aqueous phase containing an acid gas such as carbon dioxide. Effectiveness of the separation is proportional to the partial pressure of the gas. In one embodiment, a waste gas stream is used as the CO.sub.2 -containing gas.
    Type: Grant
    Filed: September 22, 1982
    Date of Patent: May 21, 1985
    Assignee: Phillips Petroleum Company
    Inventor: Donald O. Hitzman
  • Patent number: 3957628
    Abstract: A process in which organic sulfur, nitrogen and oxygen compounds are essentially quantitatively removed from hydrocarbon feedstocks by contacting said feedstocks with liquid hydrogen fluoride in the presence of hydrogen. Preferred feedstocks are those boiling in the range of from about -185.degree.C to about 345.degree.C wherein the sulfur content ranges from about 0.001 to about 10 wt. %, preferably 0.001 to about 3 wt. %.
    Type: Grant
    Filed: December 30, 1974
    Date of Patent: May 18, 1976
    Assignee: Exxon Research and Engineering Company
    Inventors: Michael Siskin, Joseph J. Porcelli
  • Patent number: 3931352
    Abstract: The normal paraffin feed stream to an integrated paraffin isomerization-HF acid-catalyzed alkylation process is treated for the removal of catalyst deactivating sulfur and nitrogen compounds and water by contacting the feed stream with liquid hydrofluoric acid. The treated feed stream is separated from the acid by gravity settling, charged to an alkylate fractionator, and passed through the isomerization process to form an isomerate which is returned to the alkylate fractionator and becomes a feed stream to the alkylation zone.
    Type: Grant
    Filed: July 11, 1974
    Date of Patent: January 6, 1976
    Assignee: Universal Oil Products Company
    Inventor: Michael Z. Mikulicz