With Nitrogen Containing Compound Patents (Class 208/289)
  • Patent number: 9993768
    Abstract: The present disclosure relates to a method for removing carbon dioxide from hydrocarbons, the method comprising the steps of: (a) contacting a feed stream comprising hydrocarbons and carbon dioxide with one or more gas-separation membranes to produce a hydrocarbon-rich retentate gas stream and a permeate gas stream rich in carbon dioxide, the retentate gas stream containing less carbon dioxide relative to the feed stream; and (b) passing at least one of the retentate gas stream or the permeate gas stream through an absorption unit to produce a hydrocarbon-rich gas phase and a liquid absorbent phase containing said carbon dioxide. The present disclosure also relates to a system for doing the same.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: June 12, 2018
    Assignee: Petroliam Nasional Berhad (PETRONAS)
    Inventors: W Nurul Ffazida W Mustapa, M Hanif M Halim, Farahdila Kadirkhan, Azman Shafawi, Athirah M Tamidi
  • Publication number: 20150136660
    Abstract: A process for removing at least one contaminant from coal tar is described. The process involves extraction with an extraction agent or adsorption with an adsorbent. The extraction agent includes at least one of amphiphilic block copolymers, inclusion complexes of poly(methyl methacrylate) and polycyclic aromatic hydrocarbons, cyclodextrins, functionalized cyclodextrins, and cyclodextrin-functionalized polymers, and the adsorbent includes exfoliated graphite oxide, thermally exfoliated graphite oxide or intercalated graphite compounds.
    Type: Application
    Filed: August 28, 2014
    Publication date: May 21, 2015
  • Publication number: 20150136654
    Abstract: A process for treating a pitch fraction from coal tar is described. The pitch fraction is contacted with a solvent, an extraction agent, or an adsorbent to remove at least one contaminant, such as oxygenate compounds, nitrogen containing compounds, and sulfur containing compounds. The solvent can be an ionic liquid, the extraction agent can be at least one of amphiphilic block copolymers, cyclodextrins, functionalized cyclodextrins, and cyclodextrin-functionalized polymers, and the adsorbent can be exfoliated graphite oxide, thermally exfoliated graphite oxide or intercalated graphite compounds.
    Type: Application
    Filed: August 28, 2014
    Publication date: May 21, 2015
  • Patent number: 9023772
    Abstract: Corrosion by ammonia/amine salts in hydrocarbon streams such as distillation overhead streams that contain a mineral acid and water can be prevented, avoided or minimized by adding certain strong amines to the streams. The amines have a pKa between about 10.5 to about 12 and include, but are not necessarily limited to, dimethylamine, diethylamine, dipropylamine, diisopropyl-amine, di-n-butylamine, diisobutylamine, di-sec-butylamine, di-tert-butylamine, pyrrolidine, piperidine, and combinations thereof. If the hydrocarbon stream further includes a nitrogen-containing compound such as ammonia, a tramp and/or a residual amine which can form a corrosive salt with the mineral acid, then the added amine is a stronger base than the tramp or residual amine, if present. The amount of added amine is greater than total amount of nitrogen-containing compound, so that any corrosive salts formed are less corrosive than the salts that would otherwise form from the ammonia and/or tramp amine.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: May 5, 2015
    Assignee: Baker Hughes Incorporated
    Inventor: Joel E. Lack
  • Publication number: 20150068951
    Abstract: The invention discloses a rubber process oil and a process for manufacturing rubber process oils which are non-carcinogenic in nature. The process comprises of selectively producing Hildebrand solubility components enriched vacuum residue by selective distillation of reduced crude oil (RCO) to obtain minimum of 10 vol % boiling components in the range 490° C. to 50° C., which leads to higher solubility of rubber process oil with an aniline point of less than 70° C. and with extremely low concentration of selective polycyclic aromatics which makes the 15 product non-carcinogenic.
    Type: Application
    Filed: February 12, 2013
    Publication date: March 12, 2015
    Applicant: Indian Oil Corporation Ltd.
    Inventors: Naduhatty Selai Raman, Palvannan Mohanasundaram, Pattathilchira Varghese Joseph, Pankaj Bhatnagar, Deepak Saxena, Anil Yadav, Vivekanand Kagdiyal, Brijesh Kumar, Rajan Thomas Mookken, Santanam Rajagopal, Ravinder Kumar Malhotra
  • Patent number: 8951409
    Abstract: The present invention provides a method for reducing fouling, including particulate-induced fouling, in a hydrocarbon refining process including the steps of providing a crude hydrocarbon for a refining process and adding an antifouling agent containing a polymer base unit and a polyamine group to the crude hydrocarbon. The antifouling agent can be obtained by reacting an epoxidation reagent with a vinyl-terminated polymer, such as polypropylene or poly(ethylene-co-propylene), to form a terminal epoxy group, followed by reacting a polyamine with the epoxy group.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: February 10, 2015
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Man Kit Ng, Glen B. Brons, Steven W. Levine, Kevin Mallory, Hong Cheng, Patrick Brant, Donna J. Crowther
  • Publication number: 20140346089
    Abstract: The invention relates to a class of novel surfactants that have utility in the recovery and/or extraction of oil.
    Type: Application
    Filed: April 22, 2014
    Publication date: November 27, 2014
    Inventors: David S. Soane, Rosa Casado Portilla, John H. Dise, Robert P. Mahoney
  • Patent number: 8834710
    Abstract: A process for starting up a hydrotreating process using a bulk metal catalyst. The process comprises the steps of providing a hydrocarbon feed stream containing less than 100 ppmw nitrogen containing species; and adding a nitrogen-containing compound to the hydrocarbon feed stream followed by contacting the resulting feed stream with the bulk metal catalyst in the presence of hydrogen and a sulfur-containing species.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: September 16, 2014
    Assignee: Shell Oil Company
    Inventors: László Domokos, Hermanus Jongkind, Pieter Van Der Laan, Marcello Stefano Rigutto
  • Patent number: 8790510
    Abstract: Methods and apparatus relate to treatment of fluids to remove mercury contaminants in the fluid. Contact of the fluid with an amine that has absorbed a sulfur compound causes the mercury contaminants to be absorbed by the amine. Phase separation then removes from the fluid the amine loaded with the mercury contaminants such that a treated product remains.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: July 29, 2014
    Assignee: Phillips 66 Company
    Inventors: John Michael Hays, Joe B. Cross
  • Patent number: 8734639
    Abstract: Petroleum resid, bitumen and/or heavy oil is upgraded by the separation of asphaltenes and/or resins from such resids, bitumen and/or heavy oils by contacting them with an ionic liquid with which the asphaltenes and/or resins interact.
    Type: Grant
    Filed: April 1, 2008
    Date of Patent: May 27, 2014
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Michael Siskin, Manuel A. Francisco, Rustom M. Billimoria
  • Patent number: 8709236
    Abstract: A process for removing a nitrogen compound from a fuel feed, such as vacuum gas oil or diesel fuel, wherein the process includes contacting the fuel feed comprising the nitrogen compound with a fuel-immiscible caprolactamium ionic liquid to produce a fuel and fuel-immiscible caprolactamium ionic liquid mixture, and separating the mixture to produce a vacuum gas oil or a diesel effluent having a reduced nitrogen content relative to the vacuum gas oil or diesel feed. The invention provides an alternate use for caprolactamium ionic liquid that is produced in large quantities for the manufacture of caprolactam.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: April 29, 2014
    Assignee: UOP LLC
    Inventors: Manuela Serban, Alan B. Levy, Lihao Tang, Alakananda Bhattacharyya
  • Publication number: 20140042059
    Abstract: Disclosed is a process for production of benzene lean gasoline by recovery of high purity benzene from a narrow boiling benzene concentrated unprocessed cracked gasoline fraction. The process involves subjecting the feed material to an extractive distillation (ED) operation using an aromatic selective solvent in combination with a co-solvent.
    Type: Application
    Filed: August 9, 2013
    Publication date: February 13, 2014
    Inventors: Madhukar Onkarnath Garg, Shrikant Madhusudan Nanoti, Ram Bhagat Nautiyal, Kumar Sunil, Prasenjit Ghosh, Nisha, Pooja Yadav, Kumar Jagdish, Manish Tiwari, Meka Raja Rao, Nagarathinam Shengaga Murthy
  • Publication number: 20140005460
    Abstract: The present invention provides a method of increasing the efficiency of exothermic CO2 capture processes. The method relates to withdrawing heat generated during the exothermic capture of CO2 with various sorbents via heat exchange with a working fluid. The working fluid is provided at a temperature and pressure such that it is in the liquid state, and has a vaporization temperature in a range such that the heat arising from the reaction of the CO2 and the sorbent causes a phase change from liquid to vapor state in whole or in part and transfers heat from to the working fluid. The resulting heated working fluid may subsequently be used to generate power.
    Type: Application
    Filed: December 16, 2011
    Publication date: January 2, 2014
    Applicant: RESEARCH TRIANGEL INSTITUTE
    Inventors: Aqil Jamal, Raghubir P. Gupta
  • Patent number: 8551325
    Abstract: A method for manufacturing a hydrocarbon oil, comprising: a first step wherein a feedstock oil containing an oxygen-containing organic compound and a water-insoluble chlorine-containing compound is brought into contact with a hydrogenation catalyst comprising a support containing a porous inorganic oxide and one or more metals selected from Group VIA and Group VIII of the periodic table supported on the support in the presence of hydrogen to generate a hydrocarbon oil and water in a vapor state by the hydrodeoxygenation of an oxygen-containing organic compound and convert the water-insoluble chlorine-containing compound into a water-soluble chlorine-containing compound; a second step wherein the water in the reaction product of the first step is maintained in a vapor state and the reaction product of the first step is brought into contact with a nitrogen-containing Brønsted base compound which has a boiling point at normal pressure of 100° C.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: October 8, 2013
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Tatsuo Hamamatsu, Hideki Ono, Yasutoshi Iguchi, Hideshi Iki, Yoshihiko Kinoshita
  • Patent number: 8394735
    Abstract: A catalyst for ultra-deep desulfurization of diesel via oxidative distillation is an amphiphilic oxidative catalyst, which is expressed as Qm[XMnOq], wherein 1?m?12; 9?n?18; 34?q?62; Q is a quaternary ammonium cation; X is P, Si, As or B; and M is Mo) or W. A desulfurization method comprises a) mixing well a diesel, the amphiphilic catalyst, and hydrogen peroxide, reacting for 10-300 minutes at ambient temperature and normal pressure, transforming the sulfur-containing compounds in the diesel into sulfone to obtain an oxidized diesel; b) distilling the oxidized diesel obtained in step a) under reduced pressure to obtain the ultra-low sulfur diesel having a sulfur content of less than 10 ppm; and c) separating and recovering the catalyst and sulfone.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: March 12, 2013
    Assignee: Dalian Institute of Chemical Physics, Chinese Academy of Sciences
    Inventors: Zongxuan Jiang, Can Li, Yongna Zhang, Hongying Lv
  • Publication number: 20130008830
    Abstract: Methods and systems for reducing fouling, including particulate-induced fouling, in a hydrocarbon refining process including the steps of providing a crude hydrocarbon for a refining process and adding an antifouling agent containing a polymer base unit and a polyamine group to the crude hydrocarbon are provided. The antifouling agent can be obtained by converting a vinyl terminated polymer, such as polypropylene or poly(ethylene-co-propylene), to a terminal acyl containing functional group, followed by reacting the terminal acyl containing functional group with a polyamine compound.
    Type: Application
    Filed: July 5, 2011
    Publication date: January 10, 2013
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Man Kit NG, Glen B. BRONS, David T. FERRUGHELLI, Hong CHENG, Kevin MALLORY, Emmanuel Ulysse, John R. Hagadorn, Donna J. CROWTHER, Patrick BRANT
  • Publication number: 20120298558
    Abstract: This invention relates to a process for separating a hydrocarbon stream via a filtration process to produce an upgraded permeate stream with decreased Conradson Carbon Residue (“CCR”) content. The invention involves the modification of a porous ceramic filter by functionalizing the surface of the ceramic filter with an multi-ring aromatic-diimide polymer. Preferably, the multi-ring aromatic-diimide polymer is comprised of a multi-ring aromatic monomer component. The functionalized filters of the present invention can be used in a process to selectively separate components of a hydrocarbon stream to produce an improved permeate (or “filtrate”) product stream with a lower CCR content and improved processing capabilities.
    Type: Application
    Filed: May 16, 2012
    Publication date: November 29, 2012
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: DAVID C. CALABRO, DENNIS G. PEIFFER, BENJAMIN A. McCOOL, STANLEY E. JAKUBOWICZ
  • Publication number: 20120149615
    Abstract: Corrosion by ammonia/amine salts in hydrocarbon streams such as distillation overhead streams that contain a mineral acid and water can be prevented, avoided or minimized by adding certain strong amines to the streams. The amines have a pKa between about 10.5 to about 12 and include, but are not necessarily limited to, dimethylamine, diethylamine, dipropylamine, diisopropyl-amine, di-n-butylamine, diisobutylamine, di-sec-butylamine, di-tert-butylamine, pyrrolidine, piperidine, and combinations thereof. If the hydrocarbon stream further includes a nitrogen-containing compound such as ammonia, a tramp and/or a residual amine which can form a corrosive salt with the mineral acid, then the added amine is a stronger base than the tramp or residual amine, if present. The amount of added amine is greater than total amount of nitrogen-containing compound, so that any corrosive salts formed are less corrosive than the salts that would otherwise form from the ammonia and/or tramp amine.
    Type: Application
    Filed: December 6, 2011
    Publication date: June 14, 2012
    Applicant: Baker Hughes Incorporated
    Inventor: Joel E. Lack
  • Patent number: 8118995
    Abstract: A method for inhibiting the formation of fouling materials including contacting hydrocarbon media containing aldehyde compounds with an antifoulant while treating the hydrocarbon media with a basic wash. The antifoulant includes a reducing sugar.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: February 21, 2012
    Assignee: General Electric Company
    Inventors: Mary King, Cato Russell McDaniel
  • Publication number: 20120012507
    Abstract: The invention provides a method of removing hydrogen sulfide from hydrocarbon fluids. The method involves using an alpha-amino ether as a hydrogen sulfide scavenger. This allows for the introduction of an oil soluble scavenger in lieu of water-soluble scavengers.
    Type: Application
    Filed: July 14, 2010
    Publication date: January 19, 2012
    Inventors: Dennis R. Compton, J. Byron Strickland, Juan M. Garcia, III
  • Publication number: 20120000829
    Abstract: The preparation of Group II and Group III lube base oils wherein liquid-continuous hydrotreating is used to treat a lube oil raffinate. The hydrotreated lube oil raffinate is then sent to a dewaxing stage that can be either a solvent or catalytic dewaxing stage.
    Type: Application
    Filed: June 29, 2011
    Publication date: January 5, 2012
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Richard Charles Dougherty, Michel Daage
  • Publication number: 20110309001
    Abstract: The invention relates to a class of novel surfactants that have utility in the recovery and/or extraction of oil.
    Type: Application
    Filed: December 2, 2010
    Publication date: December 22, 2011
    Inventors: David Soane, Rosa Casado Portilla, John H. Dise, Robert P. Mahoney
  • Patent number: 8058493
    Abstract: Corrosive amine salts in hydrocarbon streams such as desalted crude oil streams can be prevented or avoided by adding certain amine scavenging chemicals to the streams to remove the amines therefrom. Suitable amine scavengers include, but are not necessarily limited to, carboxylic anhydrides and copolymers of carboxylic anhydrides, aromatic anhydrides, isocyanates, polyisocyanates, and epoxides. The non-corrosive reaction products of the amines and/or ammonia with these scavengers are preferably oil-soluble, non-basic and thermally stable. The amine scavengers bind up and react with the amines and/or ammonia to keep them from reacting with materials such as acids (e.g. HCl) to form corrosive amine salts.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: November 15, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Joseph L. Stark, George G. Duggan, Walter A. Boyd, Jerry J. Weers
  • Publication number: 20110147275
    Abstract: The present invention provides a method for reducing fouling, including particulate-induced fouling, in a hydrocarbon refining process including the steps of providing a crude hydrocarbon for a refining process and adding an antifouling agent containing a polymer base unit and a polyamine group to the crude hydrocarbon. The antifouling agent can be obtained by reacting an epoxidation reagent with a vinyl-terminated polymer, such as polypropylene or poly(ethylene-co-propylene), to form a terminal epoxy group, followed by reacting a polyamine with the epoxy group.
    Type: Application
    Filed: December 18, 2009
    Publication date: June 23, 2011
    Applicant: ExxonMobil Research and Engineering Company
    Inventors: Man Kit NG, Glen B. Brons, Steven W. Levine, Kevin Mallory, Hong Cheng, Patrick Brant, Donna J. Crowther
  • Publication number: 20110031164
    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: October 14, 2010
    Publication date: February 10, 2011
    Applicant: AUTERRA INC.
    Inventors: Kyle E. Litz, Jennifer L. Vreeland, Jonathan P. Rankin, Mark N. Rossetti, Tracey M. Jordan
  • Publication number: 20100236990
    Abstract: Provided is a bubble generating process used to treat dewaxed lube base stocks to improve their filterability, hazy appearance or both. In one form, the process for improving at least one of haze appearance and filterability of a dewaxed lubricating oil basestock contained in a storage vessel includes contacting the lubricating oil basestock with gas bubbles passed through a gas distribution grid for a time sufficient to form a mixture of froth and gas treated basestock, allowing the mixture of froth and gas treated basestock to settle for a time sufficient to form a froth layer and a gas treated basestock layer, and separating the froth layer from the gas treated basestock layer, wherein a basestock having improved haze, improved filterability or both may be isolated from the gas treated basestock layer.
    Type: Application
    Filed: March 17, 2009
    Publication date: September 23, 2010
    Inventors: James William Gleeson, Charles Lambert Baker, JR.
  • Publication number: 20100206777
    Abstract: This idea relates to the use of polyalkylene glycols and non-salt polyether amines to improve the effectiveness of silica removal by coagulation and agglomeration of colloidal silica particles in aqueous mineral process streams.
    Type: Application
    Filed: October 3, 2008
    Publication date: August 19, 2010
    Applicant: Huntsman Corporation Australia Pty Limited
    Inventor: Salvatore Lazzaro
  • Publication number: 20090301936
    Abstract: The present technology relates to a method of treating hydrocarbon compositions such as crude oils to reduce or prevent naphthenate soap problems in upstream and downstream processes. It also relates to compositions for this use, for example.
    Type: Application
    Filed: May 13, 2009
    Publication date: December 10, 2009
    Inventors: Desmond Smith, Colin Smith, Duncan Watson
  • Publication number: 20090149369
    Abstract: This invention relates to novel compounds derived from the reaction of diamines or polyamines with alkylene oxides. The invention also relates to novel compounds derived from the reaction of amine terminated polyethers with epoxide functional compounds. The novel compounds of the invention are particularly useful as wetting and foam control agents. The disclosed compounds exhibit exceptional antifoaming and defoaming activity while simultaneously reducing the dynamic surface tension when incorporated at low levels in water-based systems.
    Type: Application
    Filed: October 1, 2008
    Publication date: June 11, 2009
    Inventors: James T. Tanner, Charles F. Palmer, JR., Calvin M. Wicker, JR.
  • Patent number: 7396450
    Abstract: A reduction in the formation and presence of peroxides in low sulfur diesel fuels is obtained through the combination of those fuels with an organic nitrate combustion improver. The reduction in the amount of peroxides means that the fuel system elastomers will be more durable, as they are not being corroded by as much peroxide formed in the fuel, fuel color durability is improved, fuel stability is enhanced, and fuel sediments are reduced.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: July 8, 2008
    Assignee: Afton Chemical Corporation
    Inventors: Joshua J. Bennett, Scott D. Schwab
  • Patent number: 7077950
    Abstract: Process for the continuous drying of a hydrocarbon stream at a temperature being effective in drying the stream with an ionic liquid drying agent comprising a salt of sulphuric acid being in liquid or melted form at the drying temperature.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: July 18, 2006
    Assignee: Haldor Topsoe A/S
    Inventor: Sven Ivar Hommeltoft
  • Publication number: 20040134838
    Abstract: The invention relates to a method of refining crude oils having high acidity by neutralising the organic acidity thereof. The inventive method consists in adding a nitrogenous compound to the crude oil. Said method is characterised in that a nitrogenous compound containing at least three carbon atoms, a secondary amine group and a hydric group is introduced at at least one point of the crude oil pre-treatment units upstream of, or in the atmospheric distillation unit.
    Type: Application
    Filed: November 14, 2003
    Publication date: July 15, 2004
    Inventors: Paul Maldonado, Roland Barberet, Louis Genevois, Alain Catros
  • Publication number: 20040089590
    Abstract: A treatment for accelerating the settling of finely divided solids in hydrocarbon fluids, including adding to the hydrocarbon a sufficient settling amount of a combination of at least two of (a) a quaternary fatty ammonium compound, (b) a hetero-atom punctuated fatty polymer and (c) an alkylphenol-formaldehyde resin alkoxylate.
    Type: Application
    Filed: November 7, 2002
    Publication date: May 13, 2004
    Inventor: Nancy R. Calvert
  • Patent number: 6627069
    Abstract: The present invention relates to a process for reducing naphthenic acid content of crude oils and its fractions in the essential absence of oxygen and in the presence of an aqueous base selected from Group IA and IIA hydroxides and ammonium hydroxide and mixtures thereof, a phase transfer agent that is a quaternary onium salt in amounts of from 10−5 to 10−1 at a temperature and pressure effective to produce a treated petroleum feed having a decreased naphthenic acid content and an aqueous phase containing naphthenate salts, phase transfer agent and base.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: September 30, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventor: Mark Alan Greaney
  • Patent number: 6579442
    Abstract: Methods and compositions for inhibiting the polymerization of vinyl monomers are disclosed. Combinations of nitroxyl compounds and aliphatic amines are effective at inhibiting the polymerization of vinyl monomers under both processing and storage conditions.
    Type: Grant
    Filed: May 22, 2001
    Date of Patent: June 17, 2003
    Assignee: GE Betz, Inc.
    Inventor: Sherif Eldin
  • Patent number: 6531103
    Abstract: The present invention provides a process for removing sulfur compounds including sulfur in the (−2) oxidation state such as mercaptans, dialkyl sulfides, carbonyl sulfide, hydrogen sulfide, thiophenes and benzothiophenes, from liquid or gas feed streams, particularly hydrocarbon feed streams such as, for example, natural gas and refinery process streams. According to the process, such a feed stream including these sulfur impurities is contacted with an absorbent which includes a metal ion-containing organic composition such as, for example, iron, copper, lead, nickel, tin, zinc or mercury cation-containing phthalocyanine or porphyrin to thereby form sulfur-metal cation coordination complexes in which the oxidation state of the sulfur and the metal cation remains essentially unchanged. The complexes are separated from the feed stream, and the absorbent is regenerated by disassociating the sulfur compound from the complexes.
    Type: Grant
    Filed: March 9, 2000
    Date of Patent: March 11, 2003
    Assignee: Union Carbide Chemicals and Plastics Technology Corporation
    Inventors: Leo Ernest Hakka, Paulino Forte
  • Publication number: 20030010676
    Abstract: Methods and compositions for inhibiting the polymerization of vinyl monomers are disclosed. Combinations of nitroxyl compounds and aliphatic amines are effective at inhibiting the polymerization of vinyl monomers under both processing and storage conditions.
    Type: Application
    Filed: May 22, 2001
    Publication date: January 16, 2003
    Inventor: Sherif Eldin
  • Patent number: 6483003
    Abstract: A process for removing impurities from a hydrocarbon component or fraction comprises mixing, in a liquid-liquid extraction step, an impurity-containing liquid hydrocarbon component or fraction, as an impure liquid hydrocarbon feedstock, with an acetonitrile-based solvent. Thereby, at least one impurity is extracted from the hydrocarbon component or fraction into the solvent. There is withdrawn from the extraction step, as a raffinate, purified hydrocarbon component or fraction, while there is withdrawn from the extraction step, as an extract, impurity-containing solvent.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: November 19, 2002
    Assignee: Sasol Technology (Proprietary) Limited
    Inventors: Waldo Eugene De Villiers, Petra De Wet, Magdalena Catharina Hough-Langanke, Hubert Naude, Atool Govan Pema
  • Publication number: 20020139710
    Abstract: The present invention is directed to the use of hydroxylamine, its acid salts or mixtures thereof to increase carbonyl extraction during the basic washing of hydrocarbons containing oxygenated compounds. More specifically, oxygenated compounds such as carbonyl containing organics are typically an impurity and have a tendency to polymerize, producing fouling elements during processing. The hydroxylamine and its salts are quite effective for increasing the extraction of the carbonyl impurities during the caustic washing of hydrocarbon streams.
    Type: Application
    Filed: February 2, 2001
    Publication date: October 3, 2002
    Inventors: John F. Martin, Sherif Eldin, Terry Kelly
  • Patent number: 6409910
    Abstract: The invention relates to a process for eliminating halogenated compounds that are contained in a gas or a liquid that comprises hydrogen and unsaturated hydrocarbons, in which the gas or the liquid is successively brought into contact with: at least one catalyst for hydrogenation, then at least one adsorbent of halogenated compounds. This gas or this liquid can be obtained from. a regenerative-type catalytic reforming.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: June 25, 2002
    Assignee: Institut Francais du Petrole
    Inventor: Christophe Nedez
  • Patent number: 6372124
    Abstract: The invention provides a method of purifying hydrocarbon streams from metallic impurities which comprises passing the stream through media comprising alumina with relatively minor amounts of calcia and magnesia.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: April 16, 2002
    Assignee: Saint-Gobain Norpro Corporation
    Inventors: John S. Reid, Thomas Szymanski, Shaun A. Mesher
  • Patent number: 6320090
    Abstract: Polynuclear aromatic hydrocarbons (PAHs) and other contaminants are removed from petroleum distillates by mixing a solvent with petroleum distillate to extract the contaminants therefrom. The solvent is recovered and distilled to separate the contaminants therefrom, and is then reused. The petroleum distillate having the contaminants separated therefrom is also distilled to remove any remaining solvent therefrom, with the recovered solvent being reused.
    Type: Grant
    Filed: March 10, 1999
    Date of Patent: November 20, 2001
    Assignee: Miami University
    Inventors: Jeffrey H. Sherman, James W. Hershberger, Richard T. Taylor
  • Patent number: 5921911
    Abstract: A method for inhibiting foam formation in a stripper of an amine unit is disclosed. The addition of non-foaming demulsifiers to the liquid, compressed hydrocarbon stream entering or the aqueous organic amine stream entering or exiting an absorber of an amine unit effectively inhibits foam formation in the amine unit stripper. Foam formation in the stripper is inhibited by controlling the entrainment of hydrocarbon in the alkaline amine stream entering the stripper through demulsification treatment in the absorber.
    Type: Grant
    Filed: September 16, 1997
    Date of Patent: July 13, 1999
    Assignee: BetzDearborn Inc.
    Inventor: Paul R. Hart
  • Patent number: 5847209
    Abstract: A process for recovery of solid and reusable urea from the urea adduction process. Refinery streams are subjected to a step of urea adduction for removal of unwanted branched products, aromatics and sulphur. The adduct is purified, dried and then subjected to the step of mechanical shearing.
    Type: Grant
    Filed: December 3, 1997
    Date of Patent: December 8, 1998
    Inventors: Anurag Ateet Gupta, Krishan Kumar Swamy, Shanti Prakash, Madan Mohan Rai, Akhilesh Kumar Bhatnagar
  • Patent number: 5824214
    Abstract: Heavy crude oil containing at least 1% by weight water is hydrotreated and upgraded while being produced downhole in a production well. During production the heavy crude oil containing water is subjected to sonic energy at a low frequency of 400 Hz to 10 kHz downhole in the presence of a metal hydrogenation catalyst that causes the water in the crude oil to react and form hydrogen which then hydrotreats and upgrades the heavy crude oil during production. In another embodiment, if the heavy crude oil does not contain water, the hydrogen may be formed in-situ by contacting the heavy crude oil downhole with a chemical compound comprising ammonia, hydrazine and formic acid that in the presence of a metal hydrogenation catalyst and sonic energy causes the chemical compound to react and form hydrogen which then hydrotreats the heavy crude oil during production. Suitable catalysts include nickel on zinc dust, platinum on carbon and palladium on carbon, preferably nickel on zinc dust.
    Type: Grant
    Filed: July 11, 1995
    Date of Patent: October 20, 1998
    Assignee: Mobil Oil Corporation
    Inventors: James M. Paul, R. Michael Davis
  • Patent number: 5608112
    Abstract: Nitrogen-containing substituents of aliphatic or aromatic compounds can be reduced by treatment with a reagent comprising (i) at least one complex of a transition metal of group 4 or 5 with a multidentate or unidentate organic or inorganic ligand and (ii) a reducing agent. The reaction is conducted optionally in the presence of an aliphatic or aromatic amine, and/or in the presence of an inert organic solvent.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: March 4, 1997
    Assignee: The Trustees of Princeton University
    Inventor: Jeffrey Schwartz
  • Patent number: 5476988
    Abstract: A method for accelerating the settling of finely divided solids in hydrocarbon fluids comprising adding to the hydrocarbon a sufficient settling amount of quaternary fatty ammonium compound. Preferably, the hydrocarbon is a fluid catalytic cracker slurry containing spent catalyst fines.
    Type: Grant
    Filed: May 25, 1994
    Date of Patent: December 19, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Paul R. Hart, Wiley L. Parker, Alan E. Goliaszewski, April Jean, Scott E. Lehrer
  • Patent number: 5458765
    Abstract: This invention is a process comprising several steps for removing solid contaminants and for assisting in the dewatering of liquid hydrocarbons. For the purposes of this invention, solid contaminants include dissolved salts, either in the oil or in the emulsified water phase, or dispersed undissolved solids. First, a sample of liquid hydrocarbon containing solid contaminants is heated to a temperature in the range of 180.degree. F.-200.degree. F. Following heating, an aqueous solution of carbodihydrazide is added to the liquid hydrocarbon and the liquid hydrocarbon is re-heated to a temperature of 180.degree. F. to 200.degree. F. After re-heating, a demulsifier is added to the liquid hydrocarbon and water and the precipitated solids are separated from the liquid hydrocarbon.
    Type: Grant
    Filed: August 5, 1994
    Date of Patent: October 17, 1995
    Assignee: Nalco Chemical Company
    Inventor: Porcia E. West
  • Patent number: 5417845
    Abstract: Process and use of decahydro pyrazino [2,3-b] pyrazine for the reduction of the proportion of free or combined hydrogen sulphide present in a fluid.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: May 23, 1995
    Assignee: Societe Francaise Hoechst
    Inventors: Frederic Mabire, Alain Blanc
  • Patent number: 5354453
    Abstract: Reactive S (e.g. H.sub.2 S and mercaptans) in petroleum liquid are scavenged by the use of oil soluble trialkyl hexahydro triazines wherein at least one alkyl group, and preferably all three, contain from 7 to 20 carbon atoms.
    Type: Grant
    Filed: April 13, 1993
    Date of Patent: October 11, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Kishan Bhatia