Heterocyclic Or Polymeric Patents (Class 585/865)
  • Patent number: 8927800
    Abstract: We provide a method for making hydrocarbon products with reduced organic halide contamination, comprising: a. separating an effluent from an ionic liquid catalyzed hydrocarbon conversion reaction into: i. a hydrocarbon fraction comprising an organic halide contaminant and from greater than zero to less than 5000 wppm olefins; and ii. a used ionic liquid catalyst fraction comprising a used ionic liquid catalyst; and b. contacting the hydrocarbon fraction with an aromatic hydrocarbon reagent and an ionic liquid catalyst to reduce a level of the organic halide contaminant to from greater than zero to 20 wppm in a finished hydrocarbon product.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: January 6, 2015
    Assignee: Chevron U.S.A. Inc.
    Inventors: Cedrick Mahieux, Sven Ivar Hommeltoft
  • Publication number: 20140148625
    Abstract: Embodiments of an invention disclosed herein relate to processes utilizing solvent extraction to remove nitrogen containing compounds and optionally other components from feedstreams of olefins and paraffins.
    Type: Application
    Filed: August 31, 2011
    Publication date: May 29, 2014
    Applicant: EXXONMOBIL CHEMICAL PATENTS INC.
    Inventors: Georges M.K. Mathys, Marc P.H. Puttemans, Geraldine Tosin, Eddy T. Van Driessche, Paul Hamilton, Marcel J.G. Janssen
  • Patent number: 8663461
    Abstract: Solvent regeneration to recover a polar hydrocarbon (HC) selective solvent substantially free of hydrocarbons (HCs) and other impurities from a solvent-rich stream containing selective solvent, heavy HCs, and polymeric materials (PMs) generated from reactions among thermally decomposed or oxidized solvent, heavy HCs, and additives is provided. A combination of displacement agent and associated co-displacement agent squeezes out the heavy HCs and PMs from the extractive solvent within a solvent clean-up zone. Simultaneously, a filter equipped with a magnetic field is positioned in a lean solvent circulation line to remove paramagnetic contaminants. The presence of the co-displacement agent significantly enhances the capability of the displacement agent in removing the heavy HCs and PMs from the extractive solvent.
    Type: Grant
    Filed: March 3, 2013
    Date of Patent: March 4, 2014
    Assignees: AMT International, Inc., CPC Corporation, Taiwan
    Inventors: Fu-Ming Lee, Tzong-Bin Lin, Kuang-Yeu Wu, Jyh-Haur Hwang, Tsung-Min Chiu, Jeng-Cheng Lee, Han-Tjen Jan, Yuan-Fu Sun
  • Publication number: 20140039230
    Abstract: We provide an extracted conjunct polymer naphtha (45), comprising a hydrogenated conjunct polymer naphtha, from a used ionic liquid catalyst, having a final boiling point less than 246° C. (475° F.), a Bromine Number of 5 or less, and at least 30 wt % naphthenes. We also provide a blended alkylate gasoline (97) comprising the extracted conjunct polymer naphtha (45), and integrated alkylation processes to make the extracted conjunct polymer naphtha (45) and the blended alkylate gasoline (97). We also provide a method to analyze alkylate products, by determining an amount of methylcyclohexane in the alkylate products (80).
    Type: Application
    Filed: July 31, 2012
    Publication date: February 6, 2014
    Applicant: Chevron U.S.A. Inc.
    Inventors: Hye Kyung Cho Timken, Izadyar Dalvand, Douglas Robert Cyr, Michael Tung-hai Cheng, Huping Luo, Shawn Shlomo Winter, Michael Sean Driver, Donald Henry Mohr
  • Publication number: 20140038867
    Abstract: A method of improving air release in lubricant base stocks and lubricating oils is provided. The method includes providing a Group I base stock, a Group II base stock or a combination thereof and adding to the base stock an effective amount of C7 to C80 paraffin, wherein the lubricant base stock provides air release according to the ASTM D3427 test at least 20% lower than the same lubricant base stock not including the C7 to C80 paraffin. Also provided are lube base stocks and lubricating oils with improved air release and methods of making such base stocks and oils.
    Type: Application
    Filed: July 22, 2013
    Publication date: February 6, 2014
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Charles Lambert Baker, JR., Beatrice Marie Gooding, Paul Carl Naegely
  • Patent number: 8471088
    Abstract: The invention concerns the control of solvent systems in processes and apparatus for the separation of aromatic hydrocarbons from non-aromatic hydrocarbons in liquid-liquid extraction, extractive distillation, and the combination thereof.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: June 25, 2013
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John Joseph Monson, Arnold Hee-Sur Choi, Dana Lynn Pilliod
  • Patent number: 8410329
    Abstract: A polyethylene production process, comprising contacting ethylene and a polymerization catalyst under suitable reaction conditions to yield a polymerization product stream, separating a light gas stream from the polymerization product stream, wherein the light gas stream comprises ethane and unreacted ethylene, contacting the light gas stream with an absorption solvent system, wherein at least a portion of the ethylene from the light gas stream is absorbed by the absorption solvent system, removing unabsorbed gases of the light gas stream from contact with the absorption solvent system to form a waste gas stream, and recovering ethylene from the absorption solvent system.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: April 2, 2013
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: John D. Hottovy, Ted Cymbaluk
  • Patent number: 8378164
    Abstract: Processes for obtaining aromatic hydrocarbons from a hydrocarbon mixture a1. Mixture a1 is extractively distilled with extractive solvent a2 producing mixture bl comprising solvent a2, aromatic hydrocarbons and high boilers, and nonaromatic hydrocarbon mixture b2. Mixture b1 is distilled to aromatic hydrocarbon c1 and solvent comprising high boilers c2. Substream dl is removed from c2 and c2 is recycled to extractive distillation. Substream d1 is extracted with water producing aqueous phase e1 and organic phase e2. Aqueous phase e1 is distilled and purified solvent a2 is recovered and recycled into extractive distillation of mixture b1. Substream e2? is removed from organic phase e2 and recycled into extractive distillation of mixture b1. The amount of organic phase e2? is such that when d1 comprising solvent, high boilers, water and circulated stream e2? is dispersed, aqueous extract phase e1, forms a disperse phase and organic phase e2 a continuous phase.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: February 19, 2013
    Assignee: BASF SE
    Inventors: Uwe Stabel, Petra Deckert
  • Patent number: 8076526
    Abstract: A process for isolating a conjugated diene from a hydrocarbon mixture is disclosed. The process comprises distilling the hydrocarbon mixture in the presence of an extraction solvent comprising an N,N-dialkyl aliphatic amide and from 12 to 50 weight percent furfural to separate a distillate and a conjugated diene-rich extract; and recovering the conjugated diene from the extract.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: December 13, 2011
    Assignee: Lyondell Chemical Technology
    Inventor: Robert W. Mason
  • Patent number: 8013197
    Abstract: A method for the absorption of alkynes and diolefins from an ethylene or propylene containing stream with conversion to alkenes by catalytic hydrogenation in a solvent over a fixed bed comprising a supported catalyst.
    Type: Grant
    Filed: February 2, 2006
    Date of Patent: September 6, 2011
    Assignee: Synfuels International, Inc.
    Inventors: Edward R. Peterson, Sean C. Gattis
  • Patent number: 7967976
    Abstract: A method for treating crude or residual fuel oil includes extracting vanadium from the fuel oil by contacting the fuel oil with an adsorbent and a solvent. The adsorbent may be modified with a compound having both acidic functionality and basic functionality. The method provides effective removal of vanadium from crude or residual fuel oil at moderate temperatures.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: June 28, 2011
    Assignee: General Electric Company
    Inventors: James Manio Silva, Grigorii Lev Soloveichik
  • Patent number: 7956230
    Abstract: A method for reducing halide concentration in a hydrocarbon product made by a hydrocarbon conversion process using an ionic liquid catalyst comprising a halogen-containing an acidic ionic liquid comprising: (i) separating at least a portion of the hydrocarbon product from the ionic liquid catalyst used in the hydrocarbon conversion process from the hydrocarbon product; (ii) contacting at least a portion of the separated hydrocarbon product with an ionic liquid catalyst having the same formula as the ionic liquid catalyst used in the hydrocarbon conversion process; (iii) separating at least a portion of the hydrocarbon product from the ionic liquid catalyst of step (ii); and (iv) recovering at least a portion of the separated hydrocarbon product of step (iii) having a halide concentration less than the halide concentration of the hydrocarbon product of step (i) is disclosed.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: June 7, 2011
    Assignee: Chevron U.S.A. Inc.
    Inventors: Hye-Kyung C. Timken, Michael S. Driver, Thomas V. Harris
  • Patent number: 7879225
    Abstract: An energy efficient, high throughput process for aromatics recovery can be readily implemented by revamping existing sulfolane solvent extraction facilities, or constructing new ones, so as to incorporate unique process operations involving liquid-liquid extraction and extractive distillation. Current industrial sulfolane solvent based liquid-liquid extraction processes employ a liquid-liquid extraction column, an extractive stripping column, a solvent recovery column, a raffinate wash column, and a solvent regenerator. The improved process for aromatic hydrocarbon recovery from a mixture of aromatic and non-aromatic hydrocarbons requires transformation of the extractive stripping column into a modified extractive distillation column. The revamping incorporates the unique advantages of liquid-liquid extraction and extractive distillation into one process to significantly reduce energy consumption and increase process throughput.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: February 1, 2011
    Assignees: CPC Corporation Taiwan, AMT International, Inc
    Inventors: Fu-Ming Lee, Kuang-Yeu Wu, Tsung-Min Chiu, Zong-Ying Chen, Jyh-Haur Hwang, Tzong-Bin Lin, Hung-Chung Shen, Tung-Hsiung Kuo, Yu-Ming Wu
  • Patent number: 7879918
    Abstract: The invention relates to low-foaming gas processing compositions comprising (a) a silicone antifoam component comprising a base silicone fluid and a particulate metal oxide; (b) an emulsifying component in an amount suitable for the at least substantial emulsification of the silicone antifoam component in water; (c) a polypropylene glycol component at least partially soluble, emulsifiable, and/or dispersible in water; (d) a water-soluble or water-dispersible gas processing agent; and (e) water. The invention also relates to methods for processing a gas by treating the gas with these foam suppressing compositions.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: February 1, 2011
    Assignee: Momentive Performance Materials Inc.
    Inventors: Kalman Koczo, David George Quinn
  • Publication number: 20100261945
    Abstract: Provided is a method of separating an aromatic compound from a mixture containing the aromatic compound and an aliphatic compound. The method includes separating an aromatic compound from a mixture containing the aromatic compound and an aliphatic compound, wherein the separating is performed using a liquid-liquid extracting method using an ionic liquid as an extracting solvent.
    Type: Application
    Filed: April 7, 2010
    Publication date: October 14, 2010
    Applicant: Samsung Engineering Co., Ltd.
    Inventors: Myong Hoon LIM, Young Mi Kim, Yong Soo Kim, Jae Eun Rho, Hyun Woo, Young Youl Koo
  • Publication number: 20100228072
    Abstract: The invention relates to a process for obtaining aromatic hydrocarbons selected from benzene, toluene, xylene and ethylbenzene and mixtures thereof from a hydrocarbon mixture which additionally comprises nonaromatic hydrocarbons and high boilers, comprising the steps of (A) providing a hydrocarbon mixture a1 and an extractive solvent a2 composed of N-formylmorpholine, (B) extractively distilling the hydrocarbon mixture a1 with the extractive solvent to obtain a mixture b1 of extractive solvent and the aromatic hydrocarbons, said mixture comprising high boilers, and a mixture b2 comprising nonaromatic hydrocarbons, (C) distilling the mixture b1 of extractive solvent and aromatic hydrocarbons obtained in step (B) to obtain one or more fractions c1 composed of aromatic hydrocarbons and the extractive solvent c2 which comprises high boilers, (D) removing a substream d1 from the extractive solvent c2 and recycling the extractive solvent c2 into the extractive distillation (B), (E) extracting the substream d1 of th
    Type: Application
    Filed: September 22, 2008
    Publication date: September 9, 2010
    Applicant: BASF SE
    Inventors: Uwe Stabel, Petra Deckert
  • Publication number: 20100113855
    Abstract: The invention relates to low-foaming gas processing compositions comprising (a) a silicone antifoam component comprising a base silicone fluid and a particulate metal oxide; (b) an emulsifying component in an amount suitable for the at least substantial emulsification of the silicone antifoam component in water; (c) a polypropylene glycol component at least partially soluble, emulsifiable, and/or dispersible in water; (d) a water-soluble or water-dispersible gas processing agent; and (e) water. The invention also relates to methods for processing a gas by treating the gas with these foam suppressing compositions.
    Type: Application
    Filed: January 8, 2010
    Publication date: May 6, 2010
    Applicant: Momentive Performance Materials Inc.
    Inventors: Kalman Koczo, David George Quinn
  • Publication number: 20100022788
    Abstract: The present invention relates to a new method of extraction of solid compounds by microwaves and to the apparatus used in said method.
    Type: Application
    Filed: January 21, 2008
    Publication date: January 28, 2010
    Applicants: Milstone S.r.l., Unversite D'Avignon ET Des Pays De Vaucluse
    Inventors: Chemat Farid, Tomao Valerie, Franco Visinoni
  • Patent number: 7619126
    Abstract: A process for recovering crude 1,3-butadiene from a C4 fraction by extractive distillation using a selective solvent in a dividing wall column (TK) in which a dividing wall (T) is arranged in the longitudinal direction of the column to form a first subregion (A), a second subregion (B) and a lower common column region (C) and which is preceded by an extractive scrubbing column (K), wherein the operation of the dividing wall column (TK) is set by regulation of the energy input into the dividing wall column (TK) via a bottom vaporizer (V) and setting of the number of the theoretical plates in the lower common column region (C) so that a bottom stream (17) consisting of purified solvent is obtained from the dividing wall column (TK), is proposed.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: November 17, 2009
    Assignee: BASF Aktiengesellschaft
    Inventor: Bernd Heida
  • Patent number: 7553406
    Abstract: This invention relates to a process for removing polarizable impurities from hydrocarbons and mixtures of hydrocarbons using ionic liquids as an extraction medium. By way of extraction, the degree of contamination of the hydrocarbon or mixture of hydrocarbons is reduced to a low or very low level. The specific ionic liquids are compounds of the Formula 1, which are organic salts that are liquid or can be melted to form a liquid and that can form at least a biphasic mixture with a hydrocarbon. The process is suitable for purifying a wide range of hydrocarbons under a wide range of process conditions.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: June 30, 2009
    Assignee: Merck Patent GmbH
    Inventors: Peter Wasserscheid, Andreas Bösmann, Andreas Jess, Leonid Datsevich, Christoph Schmitz, Andrea Wendt
  • Patent number: 7388122
    Abstract: The present invention relates to dewaxing aids comprising the mixture of two or more polyalkyl(meth)acrylates having an exothermic heat initiation temperature within the specific range when chilled at 30° C./minute rate, to be added together with the wax-containing hydrocarbon oil to the dewaxing solvent. The dewaxing aid according to the present invention can be used in the solvent dewaxing method containing the stage in which the chilling rate during the chilling is 30° C./minute or higher, is effective for heavy type wax-containing hydrocarbon oils, and is chlorine-free.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: June 17, 2008
    Assignee: Toho Chemical Industry Co., Ltd
    Inventors: Naoki Haga, Akiyuki Hiraide
  • Patent number: 7030237
    Abstract: In a reaction system having at least two liquid-liquid interfaces between an organic phase of raw material containing a compound(s) to be separated and an aqueous phase of an aqueous solution of inclusion-complexing agent and between that aqueous phase and an organic phase(s) of extraction solvent(s), the compound(s) to be separated is entrapped into the aqueous phase through formation of an inclusion complex(es) of the inclusion-complexing agent with the compound(s), while the compound(s) is entrapped into the organic phase(s) of extraction solvent(s) through dissociation of said inclusion complex(es). The foregoing operation is performed using, for example, a squarish U-shaped tube or an H-shaped tube with bottom plates. Preferred examples of inclusion-complexing agent include highly water-soluble branched cyclodextrins.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: April 18, 2006
    Assignees: National Institute of Advanced Industrial Science and Technology, Ensuiko Sugar Refining Co. Ltd., Bio Research Corporation of Yokohama
    Inventors: Isamu Uemasu, Kozo Hara, Hideki Takahashi
  • Patent number: 6727399
    Abstract: A process for separating linear alpha olefins from a feedstock containing linear alpha olefins, saturated hydrocarbons, internal olefins, branched olefins, and alcohols, in particular, from a Fisher-Tropsch stream is provided.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: April 27, 2004
    Assignee: Shell Oil Company
    Inventors: Jesse Raymond Black, Laurent Fenouil
  • Publication number: 20040019248
    Abstract: Disclosed is a method for settling suspended finely divided inorganic solid particles from a hydrocarbon slurry using an additive. The additive comprises (a) a hydroxy-terminated polyoxyalkylate chain(s) containing polymer having at least one oxygen atom and at least one nitrogen atom and, optionally, (b) other components such as a solvent, an acid or mixtures thereof.
    Type: Application
    Filed: June 6, 2003
    Publication date: January 29, 2004
    Applicant: Baker Hughes Incorporated
    Inventors: Joseph L. Stark, Robert S. Lauer, Lawrence N. Kremer
  • Patent number: 6617483
    Abstract: The invention relates to extractive distillation compositions for separating a mixture of hydrocarbon compounds, wherein the extractive distillation composition includes at least one alkylene glycol compound, and at least one compatibility agent, wherein the compatibility agent is selected from materials having polar parameters and hydrogen bonding parameters such that the extractive distillation composition provides improved separation of the hydrocarbon compounds, as compared to the use of the extractive distillation composition without the compatibility agent.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: September 9, 2003
    Assignee: Gaylord Chemical Corporation
    Inventors: Artie S. McKim, George Kvakovszky, Michael D. Donahue, Chris B. Watts
  • Patent number: 6559349
    Abstract: A process for separating and isolating saturated hydrocarbons from olefins, and in particular, a process for separating and isolating saturated hydrocarbons from olefins in a Fisher-Tropsch stream. The feedstock composition is contacted with linear polyaromatic compound under conditions effective to form linear polyaromatic compound-olefin adducts. Separation of the adducts from the stream also separates the adducted olefins from the stream. After dissociation of the adducted olefins, the process results in an olefin composition that is enriched in concentration of olefins over the concentration of olefins in the feedstock composition, and a saturated hydrocarbon stream that is enriched in saturated hydrocarbons over the concentration of saturated hydrocarbons in the feedstock.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: May 6, 2003
    Assignee: Shell Oil Company
    Inventors: Lynn Henry Slaugh, Howard Lam-Ho Fong, Laurent Alain Fenouil
  • Patent number: 6555726
    Abstract: The invention relates to methods for enhanced extractive distillation of hydrocarbons that employ extrative distillation compositions comprising sulfolane or sulfolane derivatives in comination with compatibility agents.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: April 29, 2003
    Assignee: Gaylord Chemical Corporation
    Inventors: Artie S. McKim, George Kvakovszky, Michael D. Donahue
  • Patent number: 6545192
    Abstract: A process for separating and isolating olefins from saturated hydrocarbons, preferably in a Fischer Tropsch stream, by adducting the olefins with a linear polyaromatic compound and separating the adducts from the remainder, which comprises saturated hydrocarbons.
    Type: Grant
    Filed: May 11, 1999
    Date of Patent: April 8, 2003
    Assignee: Shell Oil Company
    Inventors: Lynn Henry Slaugh, Laurent Alain Fenouil, Howard Lam-Ho Fong
  • 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
  • Patent number: 6475348
    Abstract: A mixture contains one or more vinyl-containing compounds as component (A) and, as a further component, a stabilizer (B) which contains one or more readily volatile nitroxyl compounds as component (b1), one or more sparingly volatile nitroxyl compounds as component (b2), if required one or more aromatic nitro compounds as component (b3) and, if required, one or more iron compounds as component (b4). Stabilizers (B) contain the components (b1) and (b2), (b1) and (b2) and (b3), (b1) and (b2) and (b4), and (b1), (b2), (b3) and (b4), and the premature polymerization of vinyl-containing compounds during their purification or distillation is inhibited by a process in which a stabilizer (B) is added or the components of stabilizer (B) are added as individual substances or in at least two groups of the components.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: November 5, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinz Friedrich Sutoris, Konrad Mitulla, Jacques Dupuis, Claus Kaliba
  • Patent number: 6395141
    Abstract: A method of separating aromatic hydrocarbons and non-aromatic hydrocarbons, and aromatic hydrocarbons and naphtenes involves distilling a mixture of the components by an extractive distillation process in the presence of an extractive distillation solvent. The extractive distillation solvent may be an ester of a dibasic acid, an acetonyl acetone or morpholine.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: May 28, 2002
    Inventors: Izak Nieuwoudt, Braam van Dyk
  • Publication number: 20020016523
    Abstract: This invention relates to a process for separating and isolating olefins from saturated hydrocarbons, and in particular, to a process for separating and isolating olefins from saturated hydrocarbons in a Fisher-Tropsch stream.
    Type: Application
    Filed: May 11, 1999
    Publication date: February 7, 2002
    Inventors: LYNN HENRY SLAUGH, LAURENT ALAIN FENOUIL, HOWARD LAM-HO FONG
  • Patent number: 6316685
    Abstract: Disclosed is a method for separating finely divided solids from a hydrocarbon slurry by using an additive that comprises a polymer and, optionally, an alkylbenzene sulfonic acid; and a composition of the additive thereof. The polymer is a polymer having (a) a polymeric backbone comprising polyol units and at least one unsaturated polycarboxylic unit, (b) acrylate units coordinated via unsaturated polycarboxylic units, and (c) oxyalkylated alkyl phenol units.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: November 13, 2001
    Assignee: Baker Hughes Incorporated
    Inventors: Robert S. Lauer, Lawrence N. Kremer, Joseph L. Stark, Andrew McCallum
  • Publication number: 20010014766
    Abstract: This invention relates to a process for separating and isolating saturated hydrocarbons from olefins, and in particular, to a process for separating and isolating saturated hydrocarbons from olefins in a Fisher-Tropsch stream.
    Type: Application
    Filed: February 1, 2001
    Publication date: August 16, 2001
    Inventors: Lynn Henry Slaugh, Howard Lam-Ho Fong, Laurent Alain Fenouil
  • Patent number: 6271434
    Abstract: This invention relates to a process for separating and isolating saturated hydrocarbons from olefins, and in particular, to a process for separating and isolating saturated hydrocarbons from olefins in a Fisher-Tropsch stream, and thereafter treating the olefins to separate linear alpha olefins from internal olefins.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: August 7, 2001
    Assignee: Shell Oil Company
    Inventors: Lynn Henry Slaugh, Howard Lam-Ho Fong, Laurent Alain Fenouil
  • Patent number: 6211423
    Abstract: There is provided a process for separating olefins from saturated hydrocarbons in a feedstock containing saturated hydrocarbons, internal olefins, and alpha olefins characterized by steps of selectively forming of olefin-linear polyaromatic compound adducts and steps of dissociation of these adducts.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: April 3, 2001
    Assignee: Shell Oil Company
    Inventors: Lynn Henry Slaugh, Howard Lam-Ho Fong, Laurent Alain Fenouil
  • Patent number: 6184431
    Abstract: This invention relates to a process for separating and isolating saturated hydrocarbons from olefins, and in particular, to a process for separating and isolating saturated hydrocarbons from olefins in a Fisher-Tropsch stream.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: February 6, 2001
    Assignee: Shell Oil Company
    Inventors: Lynn Henry Slaugh, Howard Lam-Ho Fong, Laurent Alain Fenouil
  • Patent number: 6136155
    Abstract: Mesitylene is difficult to separate from 1,2,4-Trimethylbenzene because of the proximity of their boiling points. They are readily separated by azeotropic distillation. Effective agents are isopropyl acetate, 2-pentanol and acetonitrile.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: October 24, 2000
    Inventor: Lloyd Berg
  • Patent number: 6007707
    Abstract: Process for the recovery of pure hydrocarbons from a hydrocarbon mixture, more particularly, a high aromatics content hydrocarbon mixture, by extractive distillation in an extractive distillation column. A first solvent feed for a first sub-flow of a selective solvent is provided between the top part of the column and the bottom part thereof. The selective solvent used is an N-substituted morpholine. Substantially non-aromatics are withdrawn as the raffinate from the head of the extractive distillation column and substantially aromatics and selective solvent are withdrawn as the extract from the sump of the extractive distillation column. A second sub-flow of the selective solvent is introduced via a second solvent feed in the top part of the column above the first solvent feed. The quantity of solvent supplied with the second sub-flow constitutes less than 50% of the total quantity of solvent.
    Type: Grant
    Filed: July 28, 1997
    Date of Patent: December 28, 1999
    Assignee: Krupp Uhde GmbH
    Inventors: Stefan Donnermeyer, Jurgen Ludolph, Hans-Jurgen Vollmer
  • Patent number: 6005157
    Abstract: Disclosed is a process for separating at least one cycloalkane containing 5-10 carbon atoms per molecule from at least one close-boiling alkane by extractive distillation of a feed consisting essentially of said at least one cycloalkane and said at least one alkane, the improvement comprising the use of certain pyrrolidones, certain morpholines, sulfoxides, sulfolanes, glycol compounds, or mixtures thereof, and optionally water; wherein said extractive distillation process produces (i) an overhead distillate product which contains a smaller volume percentage of said at least one cycloalkane and a larger volume percentage of said at least one alkane than said feed, and (ii) a bottoms product which contains said solvent and a larger volume percentage of said at least one cycloalkane and a smaller volume percentage of said at least one alkane than said feed; and wherein said at least one cycloalkane is separated from said solvent and recovered from said bottoms product.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: December 21, 1999
    Assignee: HFM International, Inc.
    Inventors: Fu-Ming Lee, Randa Wright Wytcherley
  • Patent number: 5972172
    Abstract: 1,2,4-Trimethylbenzene is difficult to separate from 1,2,3-trimethylbenzene by conventional distillation or rectification because of the proximity of their boiling points. 1,2,4-trimethylbenzene can be readily separated from 1,2,3-trimethylbenzene by extractive distillation. Effective agents are 3-nitrotoluene, m-cresol and sulfolane.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: October 26, 1999
    Inventor: Lloyd Berg
  • Patent number: 5942656
    Abstract: A process for separating linear alpha olefins from branched alpha olefins in a feed stream by:a) contacting the feed stream with a linear polyaromatic compound having at least four fused aromatic rings, such as 2,3-benzanthracene, under conditions effective to form a reaction mixture comprising a linear polyaromatic compound-linear alpha olefin adduct;b) separating the linear polyaromatic compound-linear alpha olefin adduct from the reaction mixture;c) dissociating the linear polyaromatic compound-linear alpha olefin adduct to form the linear polyaromatic compound and a linear alpha olefin composition, and optionallyd) separating the linear polyaromatic compound formed in step c) from the linear alpha olefin composition.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: August 24, 1999
    Assignee: Shell Oil Company
    Inventors: Lynn Henry Slaugh, Laurent Alain Fenouil, Howard Lam-Ho Fong
  • Patent number: 5922193
    Abstract: A process to improve the performance of furfural for aromatics extraction from gas oils and lube distillates by the addition of ethers and/or aldehydes, preferably having a dielectric constant less than about 40 @ 25.degree. C.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: July 13, 1999
    Assignee: Mobil Oil Corporation
    Inventors: Anagha Avinash Gupte, Michael E. Landis, David Owen Marler
  • Patent number: 5865958
    Abstract: Cyclohexene is separated from a mixture of cyclohexene and at least one of cyclohexane and benzene by subjecting the mixture to extractive distillation in the presence of an extraction solvent the formula: ##STR1## wherein R.sup.1 and R.sup.2 each is a C.sub.1-10 alkyl group or hydrogen, and n is an integer of from 2-4, thereby preparing a fraction rich in cyclohexene.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: February 2, 1999
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yu Kanda, Toshio Uchibori, Takeshi Ishikawa, Akio Tsuboi
  • Patent number: 5723026
    Abstract: The production of high purity benzene and high purity toluene is obtained by utilizing the initial gas separating column for the treatment of the aromatic containing starting material as a separating column for separating a benzene rich from a toluene rich component. The benzene rich component is subject directly to distillation while the toluene is subject to predistillation to separate high boiling components and only then to extractive distillation is distilled to separate the high purity benzene from the high purity toluene.
    Type: Grant
    Filed: August 18, 1995
    Date of Patent: March 3, 1998
    Assignee: Krupp Koppers GmbH
    Inventors: Martin Leisse, Hans-Jurgen Vollmer, Uwe Ranke
  • Patent number: 5720857
    Abstract: 1,2,4-Trimethylbenzene is difficult to sepparate from 1,2,3-trimethylbenzene because of the proximity of their boiling points. They are readily separated by azeotropic distillation. Effective agents are 1-propanol, methyl formate and 1-nitropropane.
    Type: Grant
    Filed: January 2, 1997
    Date of Patent: February 24, 1998
    Inventor: Lloyd Berg
  • Patent number: 5705038
    Abstract: Phellandrene is difficult to separate from limonene by conventional distillation or rectification because of the proximity of their boiling points. Phellandreneecan be readily separated from limonene by extractive distillation. Effective agents are o-cresol, tripropylene glycol and isophorone.
    Type: Grant
    Filed: November 25, 1996
    Date of Patent: January 6, 1998
    Inventor: Lloyd Berg
  • Patent number: 5681451
    Abstract: Disclosed are methods for accelerating the settling of finely divided, oil-and-water-insoluble solids in hydrocarbon fluids using an effective amount of an alkylphenol-formaldehyde resin alkoxylate having a molecular weight of about 500 to about 5,000. Preferably, the hydrocarbon is a fluid catalytic cracker slurry containing spent catalyst fines.
    Type: Grant
    Filed: January 31, 1996
    Date of Patent: October 28, 1997
    Assignee: BetzDearborn Inc.
    Inventor: Paul R. Hart
  • Patent number: 5675055
    Abstract: The waste organics containing caustic stream from a propylene oxide/styrene monomer process is preferably first concentrated by distillation and then contacted with strong acid such as sulfuric acid and an organic solvent, the admixture is phase separated and an aqueous sodium containing phase reduced in organics is separated from an organic solvent phase reduced in sodium.
    Type: Grant
    Filed: October 4, 1995
    Date of Patent: October 7, 1997
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Thomas I. Evans, Bernard Cooker, Rajendra S. Albal
  • Patent number: 5582693
    Abstract: 3-Carene and limonene cannot be separated from each other by rectification because of the closeness of their boiling points. They are readily separated by azeotropic distillation. Effective agents are: cyclopentanol, 2-nitropropane, ethyl formate amyl acetate dimethyl carbonate, tetrahydrofuran, acetic acid and 2-amino-amethyl-1-propanol.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: December 10, 1996
    Assignee: Lloyd Berg
    Inventor: Lloyd Berg