Purification Or Recovery Patents (Class 568/868)
  • Patent number: 11180436
    Abstract: A method for purifying by-product ethylene glycol of polyester in converting plasticizer includes: inputting a reaction liquid waste stream including ethylene glycol and 2-ethylhexanol into an ethylene glycol dehydration tower; inputting a hot water stream into the ethylene glycol dehydration tower to mix with the reaction liquid waste stream and to remove the 2-ethylhexanol from the reaction liquid waste stream; dehydrating the ethylene glycol via the ethylene glycol dehydration tower to collect a crude ethylene glycol stream including dehydrated ethylene glycol from a tower bottom of the ethylene glycol dehydration tower and to collect an organic liquid waste stream including the 2-ethylhexanol from a tower top of the ethylene glycol dehydration tower; and inputting the crude ethylene glycol stream into an ethylene glycol distillation tower to collect a ethylene glycol solution from a tower top of the ethylene glycol distillation tower.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: November 23, 2021
    Assignee: NAN YA PLASTICS CORPORATION
    Inventors: Te-Chao Liao, Jung-Jen Chuang, Chung-Yu Chen, Chiou-Nan Lai
  • Patent number: 10850266
    Abstract: The present invention provides a novel process and system in which a mixture of carbon monoxide and hydrogen synthesis gas, or syngas, is converted into hydrocarbon mixtures composed of high quality gasoline components, aromatic compounds, and lower molecular weight gaseous olefins in one reactor or step. The invention utilizes a novel molybdenum-zeolite catalyst in high pressure hydrogen for conversion, as well as a novel rhenium-zeolite catalyst in place of the molybdenum-zeolite catalyst, and provides for use of the novel catalysts in the process and system of the invention.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: December 1, 2020
    Assignee: Mississippi State University
    Inventors: Mark G. White, Shetian Liu
  • Patent number: 10584084
    Abstract: A method of producing 2,3-butanediol includes subjecting a 2,3-butanediol culture liquid produced by microbial fermentation to nanofiltration membrane treatment and ion-exchange treatment (Step A), and then adding an alkaline substance and performing distillation (Step B).
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: March 10, 2020
    Assignee: Toray Industries, Inc.
    Inventors: Kenji Kawamura, Izumi Morita, Masateru Ito, Kyohei Isobe, Satoshi Sakami, Katsushige Yamada
  • Patent number: 10525135
    Abstract: The present disclosure relates to a method for preparing a novel sugar alcohol with a modified, that is, increased or decreased surface area and/or porosity while having flowability as a solid phase, and also to a sugar alcohol prepared by the preparing method or a pharmaceutical composition, a cosmetic composition, a food composition and a feed composition, comprising the sugar alcohol as a carrier. According to the present disclosure, the method for preparing a sugar alcohol comprises: (A) reacting the sugar alcohol in a solid state with a solvent (S), wherein the solid state sugar alcohol is not dissolved by the solvent (S) and is reacted with the solvent (S) as a solid dispersion; and (B) removing the solvent (S) therefrom. The sugar alcohol prepared by the preparing method of the present disclosure has a modified, that is, increased or decreased surface area and/or porosity in comparison with a conventional sugar alcohol.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: January 7, 2020
    Assignee: SOONCHUNHYANG UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION
    Inventor: Keon-Hyoung Song
  • Patent number: 10329230
    Abstract: Disclosed is a process for the purification of a mixed diol stream. The mixed diol stream comprising two-, three-, and four-carbon diols is separated into component diols by extraction with a hydrophobic solvent mixture. The diols recovered in the extractant may be removed from the extractant stream by back extraction with water or by distillation with an azeotrope-forming agent present, preferably an azeotroping agent already present in the extractant mixture.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: June 25, 2019
    Assignee: Eastman Chemical Company
    Inventor: Scott Donald Barnicki
  • Patent number: 10221116
    Abstract: The invention provides a process for separating monoethylene glycol from a mixture comprising monoethylene glycol and 1,2-butanediol, said process comprising the steps of: a. providing a first stream comprising monoethylene glycol and 1,2-butanediol to a first distillation zone operated at a first pressure and under conditions to remove a first bottoms stream comprising 1,2-butanediol and to remove a first azeotrope of monoethylene glycol and 1,2-butanediol from the first distillation zone as a first overheads stream; b. withdrawing said first overheads stream from said first distillation zone; and c. providing said first overheads stream to a second distillation zone operated at a second pressure higher than said first pressure and under conditions to remove a second bottoms stream comprising monoethylene glycol and providing a second azeotrope of monoethylene glycol and 1,2-butanediol as a second overheads stream; d.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: March 5, 2019
    Assignee: SHELL OIL COMPANY
    Inventors: Pieter Huizenga, Charles-Edouard Sanders
  • Patent number: 10149857
    Abstract: An improved lyophilized cyclophosphamide solid composition is described. The lyophilized cyclophosphamide solid composition is thermally stable, contains anhydrous cyclophosphamide and mannitol, and is substantially free of cyclophosphamide monohydrate. A method for preparing the lyophilized cyclophosphamide solid composition is also provided.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: December 11, 2018
    Assignee: AMPAC Fine Chemicals LLC
    Inventors: Andrew M. Smith, Timothy S. Dutill, Edward H. Trappler
  • Patent number: 10035744
    Abstract: The invention provides a process for the separation of MEG and 1,2-BDO from a first mixture comprising MEG and 1,2-BDO in a first solvent by the steps of: (i) combining said first mixture with a second solvent stream comprising a second solvent in a first extraction column; (ii) recovering (a) a second mixture of MEG and 1,2-BDO in the second solvent, wherein the molar ratio of MEG:1,2-BDO is lower in the second mixture than in the first mixture; and (b) a solution comprising MEG in the first solvent; (iii) combining said second mixture with a first washing stream, said first washing stream also comprising the first solvent in a second extraction column; (iv) recovering (c) a first extract stream comprising the second solvent and 1,2-BDO and (d) a third mixture comprising MEG and, optionally, 1,2-BDO in the first solvent.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: July 31, 2018
    Assignee: SHELL OIL COMPANY
    Inventors: Pieter Huizenga, Kai Jürgen Fischer, Waldo Eugene De Villiers, Karin Bus, Dorien Veldhuizen
  • Patent number: 9975829
    Abstract: Method for preparing 1,4-butanediol having an APHA color index of less than 30 by treating substance mixtures comprising 1,4-butanediol by distillation of the 1,4-butanediol in the presence of complex hydrides.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: May 22, 2018
    Assignee: BASF SE
    Inventors: Rolf Pinkos, Olga Osetska, Irene de Wispelaere, Stefan Dudenhoeffer, Christina Walczuch
  • Patent number: 9932284
    Abstract: The present invention provides a process for the recovery of 1,4-butanediol and at least one co-product selected from ?-butyrolactone, n-butanol and tetrahydrofuran from an aqueous stream, said process comprising the steps of providing the aqueous stream, providing a first solvent stream, combining said aqueous stream with said first solvent stream and recovering at least a portion of the 1,4-butanediol and at least a portion of at least one of the co-products by liquid-liquid extraction.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: April 3, 2018
    Assignee: SHELL OIL COMPANY
    Inventors: Kai Jürgen Fischer, Wouter Koot, Sipke Hidde Wadman, Jean Paul Andre Marie Joseph Gishlain Lange
  • Patent number: 9926251
    Abstract: This invention discloses an approach for the separation of the close-boiling mixture of polyols. The raw material is ethylene glycol containing miscellaneous polyols (such as 1,2-propylene glycol and 1,2-butanediol). Over an acid catalyst, these miscellaneous polyols, through (1) a dehydration reaction, (2) pinacol rearrangement, and (3) acetalization or ketalization reaction, are converted into aldehydes (small amounts), acetals, and ketals (trace amount), which are simultaneously and readily separated via distillation. Meanwhile, after the reaction, the mixture is further separated to obtain an ethylene glycol product at a high purity. The invention provides a technique to remove the miscellaneous polyols from ethylene glycol via liquid-phase dehydration reactions under mild conditions, with low energy consumption. In particular, this approach is markedly effective for the removal of 1,2-butanediol that is difficult to be removed via conventional techniques.
    Type: Grant
    Filed: November 26, 2015
    Date of Patent: March 27, 2018
    Assignee: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Tao Zhang, Shuo Al, Mingyuan Zheng, Aiqin Wang, Weizhen Li, Xiaodong Wang
  • Patent number: 9732019
    Abstract: A system and method for removing acetic acid and other short chain fatty acids described as organic acid from a rich mono-ethylene glycol (“MEG”) solution does so by stripping the organic acid from the rich MEG solution by contacting the solution with a gas, the gas being nitrogen or a fuel gas such as methane; and stripping the organic acid from the gas by contacting the gas with a caustic solution such as a dilute sodium hydroxide solution. The stripping takes place in respective stripping columns. A portion of the gas exiting the gas/organic acid stripping column can be recycled to the MEG/organic acid stripping column to reduce total gas usage. A portion of the waste stream exiting the gas/organic acid stripping column can be recycled back to the gas/organic acid stripping column to reduce the amount of caustic solution used as well as the amount of waste.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: August 15, 2017
    Assignee: Cameron Solutions, Inc.
    Inventors: Steven Langley, David John Knight
  • Patent number: 9499460
    Abstract: An alcohol production method whereby high quality alcohol can be easily and effectively produced includes a step in which an alcohol solution, which contains sugar and/or sugar alcohol as an impurity and an alcohol other than sugar alcohol as a main component, has the sugar and/or sugar alcohol adsorptively removed therefrom by contacting the alcohol solution with one type or a mixture of two or more types of adsorbents selected from zeolite, an ion-exchange resin, silica alumina, and alumina.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: November 22, 2016
    Assignee: Toray Industries, Inc.
    Inventors: Kenji Kawamura, Masateru Ito, Satoshi Sakami, Katsushige Yamada
  • Patent number: 9481623
    Abstract: A process and an apparatus for the separation of a homogeneous catalyst solution from crude monoethylene glycol (MEG) and for purifying MEG is provided. The apparatus includes a catalyst separation section, an MEG rectification section, a stripping section and a pasteurization section, wherein the MEG rectification and pasteurization sections are located within a MEG purification column, and the catalyst separation section is either located in the MEG purification column or in a separate upstream vessel, and wherein the catalyst separation section includes a crude MEG vapor feed inlet to the MEG rectification section.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: November 1, 2016
    Assignee: Shell Oil Company
    Inventors: Roel Guillaume Hubertus Leonardus Bastings, Anton Pieter Westerink
  • Patent number: 9395084
    Abstract: A combustor assembly having a fuel pre-mixer including a duct for mixing an airflow and a fuel therein. Also included is a center body coaxially aligned within the duct for receiving the fuel from a fuel source and configured to distribute the fuel to at least one axial location within the duct. Further included is a planar vane section in communication with the airflow and the fuel to provide a first injection of fuel and a flow conditioning effect on the airflow. Yet further included is a swirler vane section disposed downstream of the planar vane section, wherein the swirler vane section is configured to provide a second injection of fuel and a mixing of the fuel and the airflow.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: July 19, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Mohan Krishna Bobba, Abdul Rafey Khan
  • Patent number: 9346726
    Abstract: A process for producing a composition which is particularly rich in D-mannitol, the latter being present in the form of crystals having a volume average diameter greater than 20 pm, wherein the crystals correspond to a very large extent to the ? polymorph. This process makes use of the evaporative crystallization technique, in which the seeding and then the controlled growth of the crystals is carried out at different evaporation rates. Finally, very pure ? crystals are advantageously obtained, which have a better compressibility than the ? and ? homologues thereof and which, by virtue of the sizes thereof, result in a powder which is not subject to caking.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: May 24, 2016
    Assignee: ROQUETTE FRERES
    Inventors: Baptiste Boit, Laurent Rossi
  • Patent number: 9180384
    Abstract: Disclosed are a process and an apparatus for using an olefin as an azeotropic entrainer to isolate a target organic compound from a waste stream. The olefin may be, for example, 1-decene, 1-dodecene, or 1-tetradecene. The target organic compound may be 1,3-dichloro-2-propanol in waste stream comprising a 2,2?-oxybis(1-chloropropane).
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: November 10, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Mahesh Ratnakar Sawant, Edward D. Daugs, Mark R. Smit
  • Patent number: 9090813
    Abstract: The invention provides a process for the production of a lean liquid hydrate inhibitor composition from a rich liquid hydrate inhibitor composition in which the liquid hydrate inhibitor has a boiling point above that of water, which process comprises: (a) feeding said rich liquid hydrate inhibitor composition to a first distillation vessel; (b) withdrawing a water and inhibitor containing vapor from said first distillation vessel and feeding it to a second distillation vessel; (c) withdrawing water vapor from said second distillation vessel; (d) withdrawing a lean hydrate inhibitor composition from said second distillation vessel in liquid form; (e) withdrawing a lean hydrate inhibitor composition from said first distillation vessel in liquid form; (f) withdrawing liquid from said first distillation vessel and removing solids therefrom; wherein the withdrawal of steps (e) and (f) may be of a single liquid stream and wherein at least a portion of the lean hydrate inhibitor composition withdrawn from said first
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: July 28, 2015
    Assignee: STATOIL PETROLEUM AS
    Inventors: Baard Kaasa, Per Halvard Billington
  • Patent number: 9018424
    Abstract: A method for producing a diol or triol, which has a step of removing impurities contained in a diol- or triol-containing solution, is provided. In the method, a diol- or triol-containing solution is filtered through a nanofiltration membrane having a polyamide-containing functional layer. The diol- or triol-containing solution is then collected from the permeate flow of the nanofiltration membrane.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: April 28, 2015
    Assignee: Toray Industries, Inc.
    Inventors: Izumi Morita, Masateru Ito, Hideki Sawai, Shinichi Minegishi, Katsushige Yamada, Kenji Kawamura, Shinichi Yamane
  • Publication number: 20150112102
    Abstract: Method and system for removal of heavy metal ions from a rich hydrate inhibitor stream, wherein the method comprises •a) adding a selective heavy metal reactant to the rich hydrate inhibitor stream, forming a fluid stream comprising heavy metal salt particles, •b) separating the obtained fluid stream in three streams a hydrocarbon stream, a recovered rich hydrate inhibitor stream, and a slurry comprising the heavy metal salt particles, •c) separating remaining hydrate inhibitor from the slurry thereby obtaining a concentrated rest comprising the heavy metal salt particles.
    Type: Application
    Filed: May 29, 2013
    Publication date: April 23, 2015
    Inventor: Kristian Jensen
  • Patent number: 9006500
    Abstract: A system and method for recovery of hydrate inhibitor from a fluid comprising hydrate inhibitor, water, mineral salt ions and salt particles is disclosed. Wherein, the system comprises: —an indirectly heated paddle dryer with a fluid inlet, at least one vapor outlet and a dry salt outlet —a vapor separation unit in fluid communication with the at least one vapor outlet for separation of the vapor to recover the hydrate inhibitor.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: April 14, 2015
    Assignee: Aker Process Systems AS
    Inventors: Kolbjørn Moen, Jon Even Vale, Geir Vingelven
  • Publication number: 20150099871
    Abstract: A method of extracting lentinan from lentinan containing mushrooms comprising the step of contacting the mushrooms with an ionic liquid so as to obtain a lentinan rich ionic liquid solution.
    Type: Application
    Filed: March 22, 2013
    Publication date: April 9, 2015
    Inventors: Martyn Earle, Manuela Gilea
  • Patent number: 8921618
    Abstract: A method of reclaiming trimethylolpropane from purification residue includes hydrolyzing a purification residue with an aqueous medium in the presence of (i) an acid and (ii) an oxidizing agent. The method is particularly effective to reclaim trimethylolpropane from monolinear-bis-TMP-formal: monolinear bis-TMP-formal (MBLF or TMP-BMLF); Formula II: [C2H5C(CH2OH)2CH2O]2CH2??(II).
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: December 30, 2014
    Assignee: OXEA Bishop LLC
    Inventors: Kenneth A. Windhorst, Oakley T. Cortez, Donald K. Raff
  • Patent number: 8907139
    Abstract: Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. Separation and purification processes of the crude ethanol products are employed to allow recovery of ethanol and hydrolyze acetal impurities by the addition of an acid stream.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: December 9, 2014
    Assignee: Celanese International Corporation
    Inventors: Victor J. Johnston, David Lee, Adam Orosco, R. Jay Warner, Heiko Weiner, Zhenhua Zhou, Emily Duff, Radmila Jevtic
  • Patent number: 8906205
    Abstract: A process for separating ethylene glycol and 1,2-butanediol. A material flow containing ethylene glycol and 1,2-butanediol gets into the lower-middle part of the azeotropic rectification column C3 after the light components are removed by the separating columns C1 and C2, wherein the ethylene glycol and the azeotropic agent added from the top of the column form azeotrope which is distilled out from the top of the column and gets into the phase separator D1 after being condensed, the upper phase enriched with azeotropic agent after the phase was separated returns to the top of the column to continue to participate in azeotropy, and the lower phase enriched with ethylene glycol gets into the fourth separating column C4 to be refined to obtain the ethylene glycol product.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: December 9, 2014
    Assignees: China Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical Technology SINOPEC
    Inventors: Jian Xiao, Yanzi Guo
  • Patent number: 8877985
    Abstract: Methods and systems for co-producing higher hydrocarbons and glycols from bio-based feedstocks containing carbohydrates are disclosed.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: November 4, 2014
    Assignee: Shell Oil Company
    Inventor: Joseph Broun Powell
  • Publication number: 20140322777
    Abstract: A process of isolating 1,4-butanediol (1,4-BDO) from a fermentation broth includes separating a liquid fraction enriched in 1,4-BDO from a solid fraction comprising cells, removing water from said liquid fraction, removing salts from said liquid fraction, and purifying 1,4-BDO. A process for producing 1,4-BDO includes culturing a 1,4-BDO-producing microorganism in a fermentor for a sufficient period of time to produce 1,4-BDO. The 1,4-BDO-producing microorganism includes a microorganism having a 1,4-BDO pathway having one or more exogenous genes encoding a 1,4-BDO pathway enzyme and/or one or more gene disruptions. The process for producing 1,4-BDO further includes isolating 1,4-BDO.
    Type: Application
    Filed: October 29, 2013
    Publication date: October 30, 2014
    Applicant: Genomatica, Inc.
    Inventors: Warren Clark, Michael Japs, Mark J. Burk
  • Patent number: 8864948
    Abstract: Disclosed is a dividing wall column for preparing high-purity neopentyl glycol, and a method of distilling neopentyl glycol. Using only one column, the dividing wall column has the same effect as when using two columns. Thus, energy and equipment costs may be reduced in the production of the high-purity neopentyl glycol as compared to a conventional process apparatus.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: October 21, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Sung Kyu Lee, Joon Ho Shin, Jong Ku Lee
  • Publication number: 20140309461
    Abstract: The present invention has an object to provide a method for efficiently producing high-purity 1,5-pentanediol by reacting tetrahydrofurfuryl alcohol with hydrogen. This manufacturing method for producing high-purity 1,5-pentanediol comprises: step (I): a step of obtaining a crude reaction product by a hydrogenolysis reaction of tetrahydrofurfuryl alcohol with hydrogen carried out in the presence of a copper-containing catalyst with reaction temperature of 200 to 350° C. and reaction pressure of 1 to 40 MPa until conversion rate of tetrahydrofurfuryl alcohol reaches 80% or less; step (II): a step of separating tetrahydrofurfuryl alcohol and crude 1,5-pentanediol (A) from the crude reaction product obtained in the step (I), and then, supplying recovered tetrahydrofurfuryl alcohol as a raw material for the step (I); and step (III): a step of obtaining the high-purity 1,5-pentanediol by distillation of the crude 1,5-pentanediol (A) obtained in the step (II).
    Type: Application
    Filed: November 19, 2012
    Publication date: October 16, 2014
    Applicant: UBE INDUSTRIES, LTD.
    Inventors: Yasutaka Yoshida, Kenji Hirotsu, Ryo Fujimoto, Ryousuke Katsura, Satoru Fujitsu, Takashi Doi, Kouichi Kashiwagi
  • Publication number: 20140296542
    Abstract: Process for obtaining ditrimethylolpropane and trimethylolpropane-enriched product streams from the high-boiling fractions and residues which are obtained in the distillative purification of trimethylolpropane, characterized in that these high-boiling fractions and residues are combined and a polar solvent is added to produce a solution and the solution is treated at a temperature of 120 to 280° C. and at a pressure of 2 to 25 MPa with hydrogen in the presence of a solid nickel catalyst and an acidic compound. After catalytic treatment, the solution is subjected to multi-stage distillation including with a thin film evaporator with a column attachment in order to recover ditrimethylolpropane and trimethylolpropane-enriched product streams.
    Type: Application
    Filed: October 24, 2012
    Publication date: October 2, 2014
    Inventors: Guido D. Frey, Thorsten Kreickmann, Heinz Strutz
  • Publication number: 20140256990
    Abstract: A system and method for recovery of hydrate inhibitor from a fluid comprising hydrate inhibitor, water, mineral salt ions and salt particles is disclosed. Wherein, the system comprises: -an indirectly heated paddle dryer with a fluid inlet, at least one vapor outlet and a dry salt outlet -a vapor separation unit in fluid communication with the at least one vapor outlet for separation of the vapor to recover the hydrate inhibitor.
    Type: Application
    Filed: July 18, 2012
    Publication date: September 11, 2014
    Applicant: Aker Process Systems AS
    Inventors: Kolbjorn Moen, Jon Even Vale, Geir Vingelven
  • Patent number: 8829248
    Abstract: Disclosed is a process for the extractive recovery of a homogeneous ruthenium catalyst from the reaction product of the hydrogenation of glycolic acid, glycolate esters, and/or glycolic acid oligomers with an extractant comprising a hydrophobic solvent and an optional hydrophilic solvent. The ruthenium catalyst, which can include 1,1,1-tris(diaryl- or dialkylphosphinomethyl)alkane ligands, can be recovered from the hydrophobic extract phase by back extraction with a hydrophilic solvent and recycled to a process for the preparation of ethylene glycol by the hydrogenation of glycolic acid and glycolic acid derivatives.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: September 9, 2014
    Assignee: Eastman Chemical Company
    Inventors: Scott Donald Barnicki, Jeffrey Scott Kanel, Kenneth Wayne Hampton, Jr., Eduardo Gallas Cervo
  • Patent number: 8829250
    Abstract: A process for purifying ethanol by using a finishing reactor to remove impurities, such as ethyl acetate, acetaldehyde, acetic acid, and diethyl acetal, present in ethanol after distilling a crude product from a hydrogenation reactor. The finishing reactor may reduce the impurities in the presence of hydrogen and a catalyst or may hydrolyze the impurities.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: September 9, 2014
    Assignee: Celanese International Corporation
    Inventors: Lincoln Sarager, R. Jay Warner, Radmila Jevtic, Victor J. Johnston, David Lee
  • Publication number: 20140235900
    Abstract: The invention relates to a method and an apparatus for the removal of polyvalent cations, in particular divalent cations, from mono ethylene glycol. Mono Ethylene Glycol (MEG) is used to prevent hydrate formation in pipelines transporting gas, condensate and water. It may also contribute to pipeline corrosion control.
    Type: Application
    Filed: June 14, 2011
    Publication date: August 21, 2014
    Applicant: Statoil Petroleum AS
    Inventor: Baard Kaasa
  • Patent number: 8809596
    Abstract: The present invention relates to a process for preparing deodorized 1,2-propanediol, to the use of the purified propanediol and to an apparatus for performing the process.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: August 19, 2014
    Assignee: BASF SE
    Inventors: Stephan Maurer, Roman Prochazka, Oliver Bey, Jochen Steiner, Jochem Henkelmann, Gerhard Theis, Peter Wahl, Frank Heimann
  • Patent number: 8779214
    Abstract: Disclosed is a process for the extractive recovery of a homogeneous ruthenium catalyst from the reaction product of the hydrogenation of glycolic acid, glycolate esters, and/or glycolic acid oligomers with an extractant comprising a hydrophobic solvent and an optional hydrophilic solvent. The ruthenium catalyst, which can include 1,1,1-tris(diaryl- or dialkylphosphinomethyl)alkane ligands, can be recovered from the hydrophobic extract phase by back extraction with a hydrophilic solvent and recycled to a process for the preparation of ethylene glycol by the hydrogenation of glycolic acid and glycolic acid derivatives.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: July 15, 2014
    Assignee: Eastman Chemical Company
    Inventors: Scott Donald Barnicki, Jeffrey Scott Kanel, Kenneth Wayne Hampton, Jr.
  • Patent number: 8759595
    Abstract: A method of production of value-added, biobased chemicals and derivative products from bioglycerin is described herein. The present method provides methods for desalinating, decolorizing, and concentrating bioglycerin for the production of biobased chemicals, derivative products, and/or purified bioglycerin.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: June 24, 2014
    Assignee: Vertichem Corporation
    Inventors: John R. Peterson, Christopher M. Yost
  • Patent number: 8716536
    Abstract: The present invention relates to a process for the preparation of directly compressible mannitol having a content of the ? modification of greater than 90%.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: May 6, 2014
    Assignee: Merck Patent GmbH
    Inventors: Martin Erdmann, Walter Hamm, Eugen Schwarz
  • Patent number: 8686192
    Abstract: Methods of converting cellulose or related biorenewable carbohydrate materials into high-value chemical compounds. The methods provide a means of converting low-cost materials such as cellulose and biomass into high yields of compounds such as ethylene glycol, propylene glycol, glycerin, methanol, hydroxyacetone, glycolaldehyde and dihydroxyacetone.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: April 1, 2014
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Walter S. Trahanovsky, Ronald C. Holtan, Kyle W. Quasdorf, Norman K. Olson, Alyse A. Dilts, Joseph A. Marshall
  • Publication number: 20140081054
    Abstract: The invention concerns separation methods and systems including those comprising a continuous chromatographic simulated moving bed integrated with vapor compression distillation to create a high efficiency separations platform applicable to a broad range of separation functions.
    Type: Application
    Filed: February 10, 2012
    Publication date: March 20, 2014
    Applicant: University of Pittsburgh - of the Commonwealth System of Higher Education, Pittsburgh, PA
    Inventors: Billy W. Day, Neil Hukriede
  • Patent number: 8629306
    Abstract: The invention relates to a process for preparing 1,6-hexanediol, preferably with at least 99.5% purity, which are especially virtually free of 1,4-cyclohexanediols, from a carboxylic acid mixture which is obtained as a by-product of the catalytic oxidation of cyclohexane to cyclohexanone/cyclohexanol with oxygen or oxygen-comprising gases and by water extraction of the reaction mixture, by hydrogenating the carboxylic acid mixture, esterifying and hydrogenating a substream to hexanediol.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: January 14, 2014
    Assignee: BASF SE
    Inventors: Rolf Pinkos, Daniel Breuninger, Gerd-Dieter Tebben
  • Publication number: 20130261346
    Abstract: The present invention relates to a process for the preparation of directly compressible mannitol having a content of the ? modification of greater than 90%.
    Type: Application
    Filed: November 17, 2011
    Publication date: October 3, 2013
    Applicant: MERCK PATENT GMBH
    Inventors: Martin Erdmann, Walter Hamm, Eugen Schwarz
  • Patent number: 8530706
    Abstract: Processes and reactors for the preparation of an alkylene glycol from an alkylene oxide are provided. In one embodiment, a reactor is provided comprising a carboxylation zone, a hydrolysis zone, and a channel whereby carbon dioxide can be supplied from the hydrolysis zone to the carboxylation zone, wherein the carboxylation zone and the hydrolysis zone are contained within one reactor vessel and wherein the carboxylation zone is separated from the hydrolysis zone by an internal baffle.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: September 10, 2013
    Assignee: Shell Oil Company
    Inventors: Hendrik Johannes Van Milligen, Peter Veenstra
  • Patent number: 8492597
    Abstract: The present invention describes a process for the production of propylene glycol from glycerol, the transformation of purified glycerol to propylene glycol being carried out by means of a reaction of hydrogenolysis, in the liquid phase, where the two stages of the reaction take place simultaneously and in one and the same reactor (1) under specified conditions of temperature and pressure, and the effluent from the fixed-bed reactor (1) is led to subsequent process stages that comprise separation and purification.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: July 23, 2013
    Assignee: Petroleo Brasileiro S.A.-Petrobras
    Inventors: Carlos René Klotz Rabello, Marlito Gomes Junior, Bernardo Galvão Siqueira, Raphael Bezerra de Menezes, Wilson Kenzo Huziwara, Tomas Shinobu Yamada, Lígia Maria Marçareli de Oliveira, Giselle de Carvalho Oliveira, William Victor Carlos Cândido
  • Patent number: 8466328
    Abstract: Disclosed is a process for the extractive recovery of a homogeneous ruthenium catalyst from the reaction product of the hydrogenation of glycolic acid, glycolate esters, and/or glycolic acid oligomers with an extractant comprising a hydrophobic solvent and an optional hydrophilic solvent. The ruthenium catalyst, which can include 1,1,1-tris(diaryl- or dialkylphosphinomethyl)alkane ligands, can be recovered from the hydrophobic extract phase by back extraction with a hydrophilic solvent and recycled to a process for the preparation of ethylene glycol by the hydrogenation of glycolic acid and glycolic acid derivatives.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: June 18, 2013
    Assignee: Eastman Chemical Company
    Inventors: Scott Donald Barnicki, Jeffrey Scott Kanel, Kenneth Wayne Hampton, Jr.
  • Patent number: 8445733
    Abstract: A method of reducing odor of 1,3-butylene glycol includes contacting the 1,3-butylene glycol with an activated carbon selected from wood-based activated carbons and chemically activated carbons.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: May 21, 2013
    Assignee: Oxea Bishop LLC
    Inventors: Kenneth A. Windhorst, Oakley Cortez
  • Patent number: 8399717
    Abstract: Method for purifying an alcohol from a fermentation broth comprising adding a heavy solvent, evaporating the alcohol to be purified, and mechanically drawing out of the crystallized salts by heavy solvent flow and scrapping on a falling film evaporator, a wiped film evaporator, a thin film evaporator or a short path evaporator.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: March 19, 2013
    Assignee: Metabolic Explorer
    Inventors: Pascal Rousseaux, Clement Cellier, Frederic Ollivier
  • Patent number: 8399716
    Abstract: Method for purifying an alcohol, notably 1,3-propanediol, from a fermentation broth.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: March 19, 2013
    Assignee: Metabolic Explorer
    Inventors: Frederic Ollivier, Pascal Rousseaux
  • Patent number: 8389778
    Abstract: Methods for preparing mannitol modification III are described herein. The methods relate to preparing solutions of mannitol in a suitable solvent and an auxiliary agent and solidifying from the solutions mannitol of modification III.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: March 5, 2013
    Assignee: Aptuit (West Lafayette), LLC
    Inventors: Jan-Olav Henck, Mark C. Andres, Linda J. McCausland
  • Patent number: 8383864
    Abstract: Methods of converting cellulose or related biorenewable carbohydrate materials into high-value chemical compounds. The methods provide a means of converting low-cost materials such as cellulose and biomass into high yields of compounds such as ethylene glycol, propylene glycol, glycerin, methanol, hydroxyacetone, glycolaldehyde and dihydroxyacetone.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: February 26, 2013
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Walter S. Trahanovsky, Ronald C. Holtan, Kyle W. Quasdorf, Norman K. Olson, Alyse A. Hurd, Joseph A. Marshall