Passing Through Membrane In Vapor Phase Patents (Class 210/640)
  • Patent number: 10478778
    Abstract: A composite membrane for selectively separating (e.g., pervaporating) a first fluid (e.g., first liquid such as a high octane compound) from a mixture comprising the first fluid (e.g., first liquid such as a high octane compound) and a second fluid (e.g., second liquid such as gasoline). The composite membrane includes a porous substrate comprising opposite first and second major surfaces, and a plurality of pores. A pore-filling polymer is disposed in at least some of the pores so as to form a layer having a thickness within the porous substrate. The composite membrane further includes at least one of: (a) an ionic liquid mixed with the pore-filling polymer; or (b) an amorphous fluorochemical film disposed on the composite membrane.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: November 19, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Jinsheng Zhou, Ryan C. Shirk, David Scott Seitz, Moses M. David
  • Patent number: 10471368
    Abstract: The present invention relates to a combined C3/C4 splitter with a membrane system. More specifically, the present invention relates to a combined C3/C4 splitter column to separate highly pure propylene product from a liquefied petroleum gas stream, which eliminates a C3 splitter having over 120 trays and the additional equipment that a C3 splitter requires.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: November 12, 2019
    Inventors: Stanley J. Frey, Chunqing Liu, Trung Pham
  • Patent number: 10472306
    Abstract: The present invention relates to a combined C3/C4 splitter with a membrane system. More specifically, the present invention relates to a combined C3/C4 splitter column to separate highly pure propylene product from a liquefied petroleum gas stream, which eliminates a C3 splitter having over 120 trays and the additional equipment that a C3 splitter requires.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: November 12, 2019
    Inventors: Stanley J. Frey, Chunqing Liu, Trung Pham
  • Patent number: 10456722
    Abstract: A system for use in a gas turbine engine fuel supply has an internal fuel filter having an internal bore and an external surface. A chamber within the internal bore of the fuel filter for receives a fuel and allows fuel to pass radially outwardly across the fuel filter. An oxygen removal unit is outwardly of the external surface of the fuel filter, such that fuel passes through the fuel filter, encounters the oxygen removal unit such that oxygen can be removed from the fuel, an outlet port for removed oxygen, and a separate outlet port for fuel having passed over the fuel filter and the oxygen removal unit.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: October 29, 2019
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Gerald P. Dyer
  • Patent number: 10450212
    Abstract: There is provided herein a system and method for de-toxifying and de-scaling source water. In some embodiments, source water will be mixed with either an aluminum source or an iron source to separate endotoxins from acidic proteins and convert the naturally present bicarbonate in source water to carbon dioxide. Endotoxins and carbon dioxide will then be removed from source water by a stage of hydrophobic membranes to produce de-toxified and de-carbonated source water. Calcium hydroxide will be mixed with the de-toxified and de-carbonated source water to form precipitates comprising foulants and sulfate. A recoverable and reusable amine solvent will also be used to induce efficient precipitation. Possible reuse applications for the treated source water by the inventive methods that minimize excessive uses of potable water may include hydro-fracturing of shale and sand formations and heavy oil recovery by steam injection.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: October 22, 2019
    Inventor: Mansour S. Bader
  • Patent number: 10427957
    Abstract: Separation processes using osmotically driven membrane systems are disclosed generally involving the extraction of solvent from a first solution to concentrate solute by using a second concentrated solution to draw the solvent from the first solution across a semi-permeable membrane.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: October 1, 2019
    Assignee: OASYS WATER LLC
    Inventors: Nathan T. Hancock, Marek S. Nowosielski-Slepowron
  • Patent number: 10414667
    Abstract: A process for the recovery of sodium sulfate from water, in particular from water deriving from a silica manufacturing process.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: September 17, 2019
    Assignee: RHODIA OPERATIONS
    Inventors: Dominique Horbez, Enrico Drioli
  • Patent number: 10390500
    Abstract: Presented herein are membranes for use in separating solids including salts from water. One application of such membranes is in a sub-surface irrigation system that that utilizes a saline or tainted water as a feed source. In various embodiments, the membranes operate on a solution diffusion principle. In other embodiments the membranes operate on an ultrafiltration principle and/or a solution diffusion principle. In any embodiment, the membranes operate similar to pervaporation membranes suitable for non-pressure driven systems. The membranes are designed to provide increased flux rate while separating solids such as salts from water.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: August 27, 2019
    Assignee: KC HARVEY ENVIRONMENTAL, LLC
    Inventors: Jonathan A. Brant, Kevin Harvey
  • Patent number: 10392329
    Abstract: A method and a device for condensing a water-soluble organic matter, which can collect a highly concentrated water-soluble organic matter, save energy, and reduce cost of the device by reducing a membrane area. According to the present invention, the permeability ratio of a vapor-permeation separation membrane disposed at least immediately before a final outlet on a non-permeation side in the separation membrane device is lower than those of the other vapor-permeation separation membranes while a hybrid process combining distillation by the distillation column with membrane separation by the separation membrane devices including a plurality of vapor-permeation separation membranes is used and energy saving performance is maintained. Therefore, a highly concentrated and condensed component of a water-soluble organic matter is obtained.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: August 27, 2019
    Assignees: WASEDA UNIVERSITY, MITSUBISHI CHEMICAL CORPORATION, HITACHI ZOSEN CORPORATION, CHIYODA CORPORATION
    Inventors: Masahiko Matsukata, Kenichi Kawazuishi, Kenichi Mimura
  • Patent number: 10377696
    Abstract: An apparatus for separating dimethyl carbonate using pervaporation includes: an atmospheric distillation column and a high pressure distillation column distilling a mixture containing dimethyl carbonate and methanol and separating dimethyl carbonate from the mixture; and a pervaporation membrane module disposed between the atmospheric distillation column and the high pressure distillation column and allowing for permeation of the methanol to separate the methanol from the mixture, thereby reducing heat consumption and a process cost as compared to the case of only using an existing pressure swing distillation method.
    Type: Grant
    Filed: December 24, 2015
    Date of Patent: August 13, 2019
    Assignees: POSCO, NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Joon-Hyun Baik, Jaap Ferdinand Vente, Anatolie Motelica
  • Patent number: 10359012
    Abstract: An internal combustion engine includes, in addition to an LPL-EGR system, two water vapor separation film modules for fresh air and for EGR gas. One module 34 is connected to a pressure reducing pump 40 through a suction passage 38. Other module 36 is connected to a pressure reducing pump 44 through a suction passage 42. A condenser 54 that condenses water vapor that flows through the suction passage 38 is provided in the suction passage 38. A water tank 56 that temporarily accumulates condensed water that is discharged from the condenser 54 is provided on a downstream side relative to the condenser 54. The water tank 56 is connected to injectors 60 that inject water from the water tank 56 into intake ports of respective cylinders or into respective cylinders.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: July 23, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kazuki Kikuchi
  • Patent number: 10308529
    Abstract: The present invention relates to a desalination apparatus and a desalination method using the same. In one specific embodiment, the desalination apparatus comprises: a forward osmosis unit having a draw-solution part into which seawater flows, and a raw water part into which raw water flows, and having an osmosis membrane, formed between the draw solution part and the raw water part, so as to respectively generate first treated water and first concentrated water; a capacitive deionization unit, which is connected to the draw solution part through a first inflow passage, and into which the first treated water of the draw solution part flows so as to generate second treated water; and an electrodialysis unit, which is connected to the raw water part through a second inflow passage, and into which the first concentrated water of the raw water part flows so as to generate third treated water.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: June 4, 2019
    Assignee: Korea Electric Power Corporation
    Inventors: Pill Yang Park, Jae Bong Lee, Seok Won Yoon, Ki Hyoung Kim, Kyu Il Kim
  • Patent number: 10252923
    Abstract: Water treatment systems including electrically-driven and pressure-driven separation apparatus configured to produce a first treated water suitable for use as irrigation water and a second treated water suitable for use as potable water from one of brackish water and seawater and methods of operation of same.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: April 9, 2019
    Assignee: Evoqua Water Technologies LLC
    Inventors: Gary C. Ganzi, Evgeniya Freydina, Anil D. Jha, Li-Shiang Liang, Frederick C. Wilkins
  • Patent number: 10227433
    Abstract: A variety of polycycloalkyl polynorbornene monomers and polymers derived therefrom are disclosed and claimed. The polymers and copolymers as disclosed herein are useful for forming pervaporation membranes, among other uses.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: March 12, 2019
    Assignee: PROMERUS, LLC
    Inventors: Andrew Bell, Leah Langsdorf, Oleksandr Burtovyy
  • Patent number: 10179310
    Abstract: A natural-gas purification apparatus includes: a compressor that adjusts the pressure of natural gas, and a separation device that separates natural-gas liquid and carbon dioxide from the natural gas after the pressure adjustment by the compressor through a natural-gas-liquid separation membrane and a carbon-dioxide separation membrane.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: January 15, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Wataru Matsubara, Masayuki Eda, Shintaro Honjo, Susumu Okino, Hiromi Nakatani, Masaki Yushima
  • Patent number: 10174404
    Abstract: Nanofiltration can be used to improve a hydrometallurgical process in which valuable metal is extracted from ore or tailings by leaching with a suitable lixiviant. The process requires at least two nanofiltration subsystems in which raffinate from a solvent extraction process is treated in a nanofiltration subsystem, after which permeate therefrom is combined with a pregnant solution stream and is treated in a second nanofiltration subsystem. This arrangement can lead to advantages in the amount of lixiviant recovered, in the raw materials required, in the effluent produced, in the size of plant, and in overall cost.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: January 8, 2019
    Assignee: Chemetics Inc.
    Inventors: Siamak Lashkari, Felix Mok, Ganapathy Ramasubbu, Anthony Mumba
  • Patent number: 10143971
    Abstract: A system for crystallizing a material that is dissolved in a solvent includes: a crystallization device through which a solution that is to be concentrated flows, the solution including the solvent containing the material to be crystallized and dissolved in the solvent, and a liquid having a lower temperature than the solution to be concentrated. The system includes at least one flow channel guiding the solution to be concentrated and at least one flow channel guiding the liquid, where the inner space of each respective flow channel guiding the liquid is delimited at least in part by a membrane wall that is permeable for the vaporous solvent, where a vapor pressure difference enables the solvent to pass from the solution to be concentrated across the membrane wall.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: December 4, 2018
    Assignee: Major Bravo Limited
    Inventor: Wolfgang Heinzl
  • Patent number: 10054022
    Abstract: An exhaust after-treatment system for treating an exhaust produced by an engine. The exhaust after-treatment system includes an exhaust passage, at least one catalytic exhaust after-treatment component in communication with the exhaust passage for treating the exhaust, and a water-removal device in communication with the exhaust passage that receives a portion of the exhaust therein at a location positioned upstream from the catalytic exhaust after-treatment component. The water-removal device is defined by a housing that includes a water-removal membrane that separates water from the portion of the exhaust to provide a permeate that is enriched with water, and to produce a retentate that is water depleted that facilitates the treating of the exhaust by the catalytic exhaust after-treatment component.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: August 21, 2018
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventor: Michael C. Bradford
  • Patent number: 9981848
    Abstract: An enrichment apparatus and process for enriching a hydrogen sulfide concentration in an acid gas stream to create a hydrogen sulfide rich stream for feed to a Claus. The enrichment apparatus comprises a hydrocarbon selective separation unit operable to separate the acid gas stream into a hydrocarbon rich stream and a purified acid gas stream, wherein the acid gas stream comprises hydrogen sulfide, carbon dioxide, and hydrocarbons, a hydrogen sulfide selective separation unit operable to separate the purified acid gas stream to create the hydrogen sulfide rich stream and a hydrogen sulfide lean stream, the hydrogen sulfide rich stream having a concentration of hydrogen sulfide, and the Claus unit operable to recover sulfur from the carbon dioxide lean stream. The enrichment apparatus can include a carbon dioxide selective separation unit in fluid communication with the hydrogen sulfide selective separation unit, operable to separate the hydrogen sulfide rich stream.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: May 29, 2018
    Assignee: SAUDI ARABIAN OIL COMPANY
    Inventors: Jean-Pierre R. Ballaguet, Milind M. Vaidya, Sebastien A. Duval, Aadesh Harale, Anwar H. Khawajah, Veera Venkata R. Tammana
  • Patent number: 9975084
    Abstract: A process for separating components or a fluid mixture using membranes comprising a selective layer made from copolymers of an amorphous per fluorinated dioxolane and a fluorovinyl monomer. The resulting membranes have superior selectivity performance for certain fluid components of interest while maintaining fast permeance compared to membranes prepared using conventional perfluoropolymers, such as Teflon® AF, Hyflon® AD, and Cytop®.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: May 22, 2018
    Assignees: Membrane Technology and Research, Inc., New York University
    Inventors: Timothy C Merkel, Hao Zhang, Zhenjie He, Johannes G Wijmans, Yoshiyuki Okamoto
  • Patent number: 9944576
    Abstract: The present invention provides a method for selectively separating a straight-chain conjugated diene with high purity from a mixture containing the straight-chain conjugated diene and at least one type of straight-chain olefin. The method involves separating the straight-chain conjugated diene from the mixture containing the straight-chain conjugated diene and the straight-chain olefin using a zeolite membrane composite. The composite contains a porous support and a zeolite layer formed on the surface and in the fine pores of the support, and the zeolite contains an alkali metal cation.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: April 17, 2018
    Assignees: WASEDA UNIVERSITY, JXTG Nippon Oil & Energy Corporation
    Inventors: Masahiko Matsukata, Motomu Sakai, Yasuhito Sasaki, Tatsuo Hamamatsu, Nobuhiro Kimura
  • Patent number: 9834315
    Abstract: An aircraft fuel deoxygenation system includes a boost pump, a contactor-separator, and a centrifuge-separator pump. The boost pump is adapted to receive fuel from a fuel source and inert gas from an inert gas source, and is configured to mix the fuel and inert gas and supply a fuel/gas mixture. The contactor-separator is coupled to receive the fuel/gas mixture and is configured to remove oxygen from the fuel and thereby generate and supply deoxygenated fuel with entrained purge gas and separated purge gas. The centrifuge-separator pump is coupled to receive the deoxygenated fuel with entrained purge gas and is configured to separate and remove the entrained purge gas from the deoxygenated fuel and supply the deoxygenated fuel and additional purge gas.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: December 5, 2017
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Charles Lo, Eric Blumer, Dan Laboda, Alexander Bershitsky
  • Patent number: 9783467
    Abstract: A process for treating an effluent gas stream arising from a manufacturing operation that produces an olefin or an olefin derivative to recover unreacted olefin. The process involves compressing the effluent gas stream, which comprises an olefin, a paraffin, and a third gas, to produce a first compressed stream, then directing the first compressed stream to a membrane separation pretreatment step. The permeate stream withdrawn from this step is enriched in olefin and is sent to a second compressor, which produces a second compressed stream that is then cooled and condensed. The condensation step produces a liquid condensate and an uncondensed gas stream. The uncondensed gas stream undergoes a second membrane separation step to produce another olefin-enriched permeate stream, which is recirculated within the process prior to the second compression step, and an olefin-depleted residue stream, which may be purged from the process.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: October 10, 2017
    Assignee: Membrane Technology and Research, Inc.
    Inventor: Paul Su
  • Patent number: 9770678
    Abstract: Described is a method for vacuum degassing of a liquid such as a solvent for a liquid chromatography system. The method includes modulating application of a vacuum to a fluid channel of a degasser so that each volume of a liquid drawn from the degasser experiences a residence time that is equal to the residence times of the other volumes. The residence time is determined as a time that the volume resides in the fluid channel under application of the vacuum and to a magnitude of the applied vacuum. The method is advantageous for use with liquid chromatography systems where differences in the diffusion rates of solvents into the degasser vacuum can otherwise introduce error into the composition gradient of a mobile phase.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: September 26, 2017
    Assignee: WATERS TECHNOLOGIES CORPORATION
    Inventors: Michael R. Jackson, Christopher Seith, Steven J. Ciavarini, Kara O'Donnell, John Angelosanto, John Leason
  • Patent number: 9758458
    Abstract: Provided are a method of and a device for purifying isopropyl alcohol. Water may be effectively removed from a feed including water and isopropyl alcohol while consuming a minimum amount of energy, and therefore, a high-purity isopropyl alcohol may be obtained.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: September 12, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Jong Suh Park, Sung Kyu Lee, Joon Ho Shin, Jong Ku Lee
  • Patent number: 9744499
    Abstract: Reverse osmosis membranes made by interfacial polymerization of a monomer in a nonpolar (e.g. organic) phase together with a monomer in a polar (e.g. aqueous) phase on a porous support membrane. Interfacial polymerization process is disclosed for preparing a highly permeable RO membrane, comprising: contacting on a porous support membrane, a) a first solution containing 1,3-diaminobenzene, and b) a second solution containing trimesoyl chloride, wherein at least one of solutions a) and b) contains nanoparticles when said solutions are first contacted, and recovering a highly permeable RO membrane.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: August 29, 2017
    Assignee: LG NANOH2O, INC.
    Inventors: Christopher James Kurth, Jeffrey Alan Koehler, Meijuan Zhou, Brett Anderson Holmberg, Robert Leon Burk
  • Patent number: 9724650
    Abstract: Disclosed are copolymers which are useful in hydrophilically modifying porous fluoropolymer supports. An example of the copolymers is: Also disclosed are a method of preparing such copolymers, a method of modifying porous fluoropolymer surfaces, and hydrophilic fluoropolymer porous membranes prepared therefrom. Also disclosed is a method of filtering fluids by the use of the hydrophilic fluoropolymer porous membranes.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: August 8, 2017
    Assignee: Pall Corporation
    Inventors: Khaled Abdel-Hakim Helmy Aamer, Jian Qiu, Hassan Ait-Haddou
  • Patent number: 9649603
    Abstract: Disclosed are copolymers suitable for hydrophilically modifying the surface of fluoropolymer membranes. An example of the copolymers is: Also disclosed are a method of preparing the copolymers, a method of hydrophilically modifying porous fluoropolymer supports, hydrophilic porous fluoropolymer membranes prepared from the copolymers, and a method of filtering fluids by the use of the hydrophilic porous fluoropolymer membranes.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: May 16, 2017
    Assignee: Pall Corporation
    Inventors: Hassan Ait-Haddou, Khaled Abdel-Hakim Helmy Aamer, Jian Qiu, Frank Okezie Onyemauwa, Marcin Stasiak
  • Patent number: 9643131
    Abstract: Disclosed are hydrophilic porous PTFE membranes comprising PTFE and an amphiphilic copolymer, for example, a copolymer of the formula: wherein m and n are as described herein. Also disclosed are a method of preparing hydrophilic porous PTFE membranes and a method of filtering fluids through such membranes.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: May 9, 2017
    Assignee: Pall Corporation
    Inventors: Khaled Abdel-Hakim Helmy Aamer, Hassan Ait-Haddou, Marcin Stasiak, Amarnauth Singh
  • Patent number: 9636641
    Abstract: Disclosed are polymers suitable for hydrophilically modifying the surface of porous fluoropolymer supports, for example, a copolymer of the formula: Also disclosed are a method of preparing the polymers, a method of hydrophilically modifying porous fluoropolymer supports, hydrophilic fluoropolymer porous membranes prepared from the polymers, and a method of filtering fluids through the porous membranes.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: May 2, 2017
    Assignee: Pall Corporation
    Inventors: Khaled Abdel-Hakim Helmy Aamer, Jian Qiu, Hassan Ait-Haddou
  • Patent number: 9587112
    Abstract: According to the present invention, an aromatic polysulfone resin is offered which is suitable as film material, especially in porous membranes. The aromatic polysulfone resin of the present invention has a reduced viscosity of 0.55-0.65 dL/g, and preferably 0.58-0.62 dL/g, number average molecular weight (Mn) of 22000 or more, and preferably 23500 or more, and a value of the ratio of weight average molecular weight (Mw) relative to number average molecular weight (Mn) of 2.54 or less, and preferably 2.50 or less.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: March 7, 2017
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yusaku Kohinata, Hiroshi Harada
  • Patent number: 9403102
    Abstract: A heat exchange system may include a first heat exchange circuit and a second heat exchange circuit. The first heat exchange circuit may circulate a first working fluid sequentially through a first heat exchanger, a second heat exchanger and a membrane contactor. The second heat exchange circuit may direct a second working fluid sequentially through the first heat exchanger and the membrane contactor, where the second working fluid includes solute and solvent. The first heat exchanger and the membrane contactor may transfer heat energy from the second working fluid to the first working fluid, and the second heat exchanger may transfer heat energy from the first working fluid to a third working fluid. The membrane contactor may extract a portion of the solvent from the second working fluid.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: August 2, 2016
    Assignee: United Technologies Corporation
    Inventors: Hailing Wu, Zidu Ma
  • Patent number: 9358507
    Abstract: The present invention is intended to provide a composite membrane excellent in both durability and moisture permeability. The present invention provides a composite membrane formed by laminating a layer of a moisture-permeable resin on one surface of a hydrophobic porous membrane, the composite membrane being characterized in that the layer of the moisture-permeable resin is included in a reinforcing porous membrane.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: June 7, 2016
    Assignee: W.L. Gore & Associates, Co., Ltd.
    Inventors: Keita Hirai, Hiroyoshi Fujimoto
  • Patent number: 9353222
    Abstract: A composition including a diamine compound and a dianhydride compound, wherein the diamine compound includes a first diamine compound represented by Chemical Formula 1, wherein, in Chemical Formula 1, T1 to T8 and L1 to L8 are the same as defined in the detailed description.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: May 31, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byung Hee Sohn, Yoon Seok Ko
  • Patent number: 9346021
    Abstract: The present invention provides composite membranes for membrane distillation and related methods of manufacture. In particular, there is provided a composite hydrophilic/hydrophobic membrane comprising a hydrophilic polymer layer and a hydrophobic polymer layer comprising fluorinated surface-modifying macromolecules, wherein said composite membrane has a high vapor flux. Also provided herein are methods of manufacturing and optimizing the composite membranes and a membrane distillation system comprising the composite membranes.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: May 24, 2016
    Assignee: Membrane Distillation Desalination Ltd., Co.
    Inventors: Moh'd Rasool Qtaishat, Mohamed Khayet, Takeshi Matsuura
  • Patent number: 9346921
    Abstract: The present disclosure relates to high molecular weight polystyrene-polydialkylsiloxane-polystyrene (“SDS”) triblock copolymer compositions and methods of separating one or more organic compounds from an aqueous solution using membranes derived from SDS triblock copolymers. The methods may be used to separate the one or more organic compounds from an aqueous solution produced in a fermentation process. In some embodiments, the one or more organic compounds include an alcohol, such as, for example, ethanol. In other embodiments, the one or more organic compounds include acetone. In other embodiments, the one or more organic compounds include acetone, ethanol, and n-butanol produced in an acetone-ethanol-n-butanol (ABE) fermentation process. In other embodiments, the one or more organic compounds include one or more byproducts produced in a fermentation process.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: May 24, 2016
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Nitash P. Balsara, Ali Evren Ozcam, Ashish K. Jha
  • Patent number: 9321011
    Abstract: [Problem] To provide a membrane separation apparatus and a membrane separation method capable of reducing energy consumption, [Solution] A membrane separation apparatus (10) includes: a membrane separator (20) supplied with a fluid (X) containing a component (A) and a component (B) and separating the fluid (X) into a fluid (Y) having a higher concentration of the component (A) than the fluid (X) and a fluid (Z) having a lower concentration of the component (A) than the fluid (X) by using a separation membrane; a first compressor (21) adiabatically compressing the fluid (Y); a first heat exchanger (11) to which the fluid (Y) adiabatically compressed by the first compressor (21) is introduced as a heat source; and a second heat exchanger (12) to which the fluid (Z) is introduced as a heat source.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: April 26, 2016
    Assignees: NIPPON STEEL & SUMKIN ENGINEERING CO., LTD., THE UNIVERSITY OF TOKYO
    Inventors: Takafumi Kiuchi, Ryohta Hidaka, Yoichi Ishibashi, Yasuki Kansha, Atsushi Tsutsumi
  • Patent number: 9309171
    Abstract: A process for treating an effluent gas stream arising from a manufacturing operation that produces an olefin or a non-polymeric olefin derivative. The process involves cooling and condensing the effluent gas stream, which comprises an olefin, a paraffin, and a third gas, to produce a liquid condensate and an uncondensed (residual) gas stream. Both streams are then passed through membrane separation steps. The membrane separation of the uncondensed gas stream results in an olefin-enriched stream and an olefin-depleted stream. The olefin-enriched stream is recirculated within the process prior to the condensation step. The membrane separation of the condensate also results in an olefin-enriched stream, which may be recycled for use within the manufacturing operation, and an olefin-depleted stream, which may be purged from the process.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: April 12, 2016
    Assignee: Membrane Technology and Research, Inc.
    Inventor: Paul Su
  • Patent number: 9289725
    Abstract: Process for the purification of an aqueous stream coming from the Fischer-Tropsch reaction which comprises: feeding said aqueous stream containing the organic by products of the reaction to one or more pervaporation units, said one or more pervaporation units comprising at least one polymeric pervaporation membrane, obtaining two outgoing streams: —an aqueous stream (i) enriched in alcohols having from 1 to 8 carbon atoms, preferably from 2 to 4 carbon atoms; —an aqueous stream (ii) enriched in water.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: March 22, 2016
    Assignee: ENI S.p.A.
    Inventors: Roberta Miglio, Lino Carnelli, Gabriele Carlo Ettore Clerici, Roberto Zennaro
  • Patent number: 9283522
    Abstract: The invention is directed to a process for separating liquid mixtures, which includes passing a liquid stream of the liquid mixture over a membrane, the membrane being selective for at least one of a first compound and a second compound, whereby at least part of the liquid stream passes through the membrane leaving the other side of the membrane as a vapor, with the remainder of the liquid stream forming a retentate stream, and condensing the vapor on a condenser surface having a lower temperature than the liquid stream to give a distillate stream, the condenser surface forming a non-permeable heat conducting separation wall between the distillate stream and a cooling stream which cooling stream is a) a feed stream, or b) the retentate stream.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: March 15, 2016
    Assignee: NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO
    Inventors: Erik Everhardus Bernardus Meuleman, Peter Geerdink, Earl Lawrence Vincent Goetheer, Eva Sanchez Fernandez
  • Patent number: 9216931
    Abstract: A process for recovering unreacted olefin in a polyolefin manufacturing process comprising the treatment of a purge bin vent gas. The process involves cooling and condensing the vent gas (purge stream), which contains at least an olefin, a paraffin, and hydrogen, to produce a liquid condensate and an uncondensed (residual) gas stream. Both streams are then passed through membrane separation steps. The membrane separation of the uncondensed gas stream results in a residue stream containing mostly nitrogen and/or paraffin and a permeate stream enriched in either C2+ hydrocarbons or olefin, depending on the type of separation. The permeate from this step is recirculated within the process prior to the condensation step. The membrane separation of the condensate results in a residue stream containing paraffin and a permeate stream enriched in olefin, which may be recycled to the polymerization reactor.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: December 22, 2015
    Assignee: Membrane Technology and Research, Inc.
    Inventor: Paul Su
  • Patent number: 9200800
    Abstract: A method and system for steam generation and purification is presented. The method includes receiving a fuel stream, a water stream, and an oxidant stream in a direct contact steam generation (DCSG) apparatus; and generating a gas mixture stream comprising steam and carbon dioxide (CO2) in the DCSG apparatus. The method further includes receiving at least a portion of the gas mixture stream in a membrane separator, and separating at least a portion of the steam from the gas mixture stream to generate a permeate stream. The method further includes recirculating at least a portion of the permeate stream to the DCSG apparatus; monitoring a CO2 content in the gas mixture stream; and discharging at least a portion of the gas mixture stream at an outlet of the DCSG apparatus as a product stream if the CO2 content is lower than a determined value.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: December 1, 2015
    Assignee: General Electric Company
    Inventors: Surinder Prabhjot Singh, Dhaval Ajit Bhandari
  • Patent number: 9174164
    Abstract: An apparatus for dehumidifying gas is provided which converts humid gas into dehumidified gas using a hydrophilic membrane that includes a superabsorbent polymer. A sub-dew point cooling tower, sub-dew point evaporative cooler and sub-dew point water harvesting system which utilize the apparatus for dehumidifying gas are also provided.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: November 3, 2015
    Assignee: Gas Technology Institute
    Inventors: Paul Eric Glanville, Yaroslav Chudnovsky, Qinbai Fan, Aleksandr Pavlovich Kozlov, Mark Jacob Khinkis
  • Patent number: 9149769
    Abstract: A dehydration system has improved membrane performance. The dehydration system includes a dehydrating apparatus 1 comprising, in a dehydrating apparatus body, a water separation membrane module in which a water separation membrane having at least one flow path extending in the up and down direction to cause a liquid 50 to pass through is provided with a liquid inlet at the bottom thereof and a liquid outlet at the top thereof; and a shell 11 defined by the outer surface of the water separation membrane module and the inner wall of the dehydrating apparatus body, wherein water in the liquid permeates the water separation membrane while the liquid rises in the water separation membrane, and moves in the shell, whereby the liquid is dehydrated; a pressure reducing device 13 for reducing the pressure of the shell 11; a pressure device for pressurizing the liquid before the liquid is fed to the water separation membrane module; and a heating device for heating the pressurized liquid.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: October 6, 2015
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yoshio Seiki, Atsuhiro Yukumoto, Hiroyuki Osora, Haruaki Hirayama
  • Patent number: 9061251
    Abstract: A tubular membrane module and its method of manufacture are disclosed wherein tubular membranes form an interference self-sealing fit with hard tube sheets with the aid of a hard hollow mandrel inserted at the end of the tubular membranes. The tubular membranes are comprised of porous, compressible PTFE and/or fluorocopolymers. The self-sealing method described herein requires no heat treatment, allows for ease of manufacture without destruction of the tubular membranes and without the processing complexity of utilizing any additional potting agent, extrusion, or chemical cross-linking of any polymeric adhesives. The self sealing PTFE tubular membranes have superb chemical resistance and temperature resistance, and through the benefits of this invention, offer higher pullout resistance than typically observed with potting materials such as polyurethane and epoxy.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: June 23, 2015
    Assignee: Markel Corporation
    Inventors: Kenneth Donald Hobbs, Robert Edward Jerman, Charles Edward Wolanski
  • Patent number: 9044713
    Abstract: This invention relates to heterogenous pore polymer nanotube membranes useful in filtration, such as reverse osmosis desalination, nanofiltration, ultrafiltration and gas separation.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: June 2, 2015
    Assignee: NAGARE MEMBRANES LLC
    Inventors: Timothy V. Ratto, Jason K. Holt, Alan W. Szmodis
  • Patent number: 9039900
    Abstract: Membranes for membrane distillation include at least one hollow fiber porous hydrophobic membrane, the at least one membrane including carbon nanotubes incorporated into the pore structure of the membrane. Membrane distillation systems may include a heat exchanger operably connected to a hollow fiber membrane module with one or more membranes including carbon nanotubes. Methods of solvent removal, sample preconcentration and desalination employing hollow fiber porous hydrophobic membranes with carbon nanotubes are disclosed.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: May 26, 2015
    Assignee: New Jersey Institute of Technology
    Inventors: Somenath Mitra, Ken Gethard
  • Publication number: 20150129496
    Abstract: The invention relates to a composite comprising a porous substrate at least partially coated with a coating layer prepared from curing a coating composition (C), the coating composition (C) comprising at least one curable perfluoropolyether (PFPE) polymer. The invention further relates to a process for manufacturing a composite as afore-described, comprising the steps of: (a) providing a coating composition (C) comprising at least one curable perfluoropolyether (PFPE) polymer; (b) depositing said coating composition (C) on a porous substrate; and (c) crosslinking said coating composition (C) to form a porous substrate at least partially coated.
    Type: Application
    Filed: April 29, 2013
    Publication date: May 14, 2015
    Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.p.A. a corporation
    Inventors: Aldo Sanguineti, Emanuele DI Nicolo, Pasquale Campanelli
  • Patent number: 9023211
    Abstract: A VMD system and method uses an aspirator to generate a vacuum pressure for drawing permeate from a membrane module. The aspirator generates the vacuum pressure by receiving and passing a circulating liquid and combines the permeate with the circulating liquid such that the permeate condensates in the circulating liquid. Using an aspirator (e.g., instead of a vacuum pump) allows a more efficient and cost-effective operation of the VMD system and method, particularly in a desalination application. A VMD system and method using an aspirator may be used in desalination and other applications including, without limitation, environmental cleanup (e.g., removal of volatile organic chemicals from water) and food and medical applications.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: May 5, 2015
    Assignee: Masdar Institute of Science and Technology
    Inventor: Hassan Ali Arafat
  • Publication number: 20150114906
    Abstract: Described is a liquid separation device comprising a porous support structure further comprising polymeric hollow fibers; an inorganic mesoporous silica membrane disposed on the porous support structure, wherein the inorganic mesoporous silica membrane is free of defects; and wherein the inorganic mesoporous silica membrane has a network of interconnected three-dimensional pores that interconnect with the porous support structure; and wherein the inorganic mesoporous silica membrane is a silylated mesoporous membrane. Also described are methods for making and using the liquid separation device.
    Type: Application
    Filed: October 16, 2014
    Publication date: April 30, 2015
    Applicants: Phillips 66 Company, Georgia Tech Research Corporation
    Inventors: Sankar Nair, Hyung-Ju Kim, William J. Koros, Kwang-Suk Jang, Justin R. Johnson, Christopher W. Jones, Joe D. Allison, Jeffrey H. Drese