Distilling To Separate Or Remove Only Water Patents (Class 203/12)
  • Patent number: 9783427
    Abstract: A method of recycling mixtures of hydrochloric and hydrofluoric acid. In particular, a method of recycling hydrofluoric acid and boron fluoride mixtures. A process for upgrading mixtures of fluoroboron compounds contaminated with chlorides as an aqueous solution of boron fluoride hydrates, including a step of vacuum distillation. Also, a method of producing gaseous boron trifluoride.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: October 10, 2017
    Assignee: ARKEMA FRANCE
    Inventors: Pascal Dufour, Cyrille Le Toullec
  • Patent number: 9533940
    Abstract: Means of preserving 1,5-pentanediamine or a salt thereof without deterioration is provided. 1,5-pentanediamine or a salt thereof is preserved by adjusting any of a water content of 1,5-pentanediamine or a salt thereof purified through a distillation process, a temperature condition, and a material that comes into contact with 1,5-pentanediamine or a salt thereof.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: January 3, 2017
    Assignee: AJINOMOTO CO., INC.
    Inventors: Takehiro Hiura, Masataka Yamamoto, Yasuhiro Maruta
  • Patent number: 9254451
    Abstract: The invention relates to a method and a device with the aid of which hydrogen halide and water are removed from biomass hydrolyzates containing halogen acid. The core of the invention is an evacuated container (B1), which is continuously supplied with a heat-transfer medium and which is completely filled with the heat-transfer medium in a part. In said evaporation chamber, the biomass hydrolyzate is likewise continuously introduced. In the container (B1), heat is transferred from the heat-transfer medium to the hydrolyzate, wherein hydrogen halide and water are continuously evaporated. The remaining hydrolyzate particles are continuously discharged with the cooled heat-transfer medium and continuously removed by means of the heat-transfer medium and continuously separated from said heat-transfer medium. The invention described can also be used to treat other mixtures or solutions for the purpose of evaporation.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: February 9, 2016
    Assignee: Green Sugar GmbH
    Inventors: Frank Kose, Matthias Schmidt
  • Patent number: 9102604
    Abstract: A method for cleaning a distilling column includes providing a distilling column including a packing containing nickel and adding hydrochloric acid to the distilling column to wash at least a portion of the packing, thereby cleaning the distilling column.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: August 11, 2015
    Assignees: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE SA
    Inventors: Leonid A. Rozov, Linas Kudzma, Hong-Chang Lee, Ronald Bell
  • Patent number: 9028654
    Abstract: Disclosed herein is a system comprising an evaporation unit comprising a first heat exchanger in fluid communication with a second heat exchanger; where the first heat exchanger is operative to heat an effluent stream comprising an amine solvent and/or amine byproducts and water and to discharge the effluent stream to the second heat exchanger; where the second heat exchanger is operative to convert the effluent stream into a distillate stream and a concentrate stream; and a reverse osmosis unit in fluid communication with the evaporation unit; where the reverse osmosis unit comprises a first reverse osmosis unit that is operative to receive the distillate stream and to separate water from byproducts of the amine solvent such that the water has a purity of greater than 95%, based on the weight of the distillate stream.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: May 12, 2015
    Assignee: ALSTOM Technology Ltd
    Inventors: Bjoern Ungerer, Christoph Weingaertner, Hans-Peter Dornik
  • Publication number: 20140346033
    Abstract: The present invention relates to a method and system for regeneration of kinetic hydrate inhibitor when it is used without a thermodynamic inhibitor. In that the use of a distillation column or tower is not needed, the present invention enables a more compact system, which also improves the possibility for heat integration of the regeneration process leading to very low energy consumption. Additional improvements over the prior art include reduced cost of buying new chemicals, reduced environmental impact because the chemicals are not discharged with the produced water and the possibility for the use of higher concentrations of kinetic hydrate inhibitor with still reduced cost and environmental impact.
    Type: Application
    Filed: September 22, 2011
    Publication date: November 27, 2014
    Applicant: Statoil Petroleum AS
    Inventors: Baard Kaasa, Pål Viggo Hemmingsen
  • Patent number: 8877016
    Abstract: Systems and methods for solar steam generation are described. The systems and methods include moving at least one frame mounted optical focusing lens to track the sun in two axes and disposing a water boiler at a focus of each optical focusing lens. Raw water is pumped through an inlet at a bottom of each boiler and solar energy is concentrated, using each optical focusing lens, on each boiler, heating the raw water in each boiler and evaporating steam from the raw water. The steam exits each boiler, via a steam outlet pipe. Remaining salts and solids in each boiler are ground by rotation of salt grinding-cleaning gears. These ground salts and solids are drained and/or pumped out of each boiler from an exit in the bottom of each boiler.
    Type: Grant
    Filed: November 6, 2011
    Date of Patent: November 4, 2014
    Assignee: King Saud University
    Inventors: Mazen A. Ba-abbad, Hany A. Al-Ansary, Essam A. Al-Ammar
  • Patent number: 8801897
    Abstract: A compact and portable liquid concentrator and contaminant scrubber includes a gas inlet, a gas exit and a flow corridor connecting the gas inlet and the gas exit, wherein the flow corridor includes a narrowed portion that accelerates the gas through the flow corridor. A liquid inlet injects liquid into the gas stream at a point prior to the narrowed portion so that the gas-liquid mixture is thoroughly mixed within the flow corridor, causing a portion of the liquid to be evaporated. A demister or fluid scrubber downstream of the narrowed portion removes entrained liquid droplets from the gas stream and re-circulates the removed liquid to the liquid inlet through a re-circulating circuit. A reagent may be mixed with the liquid to react with contaminants in the liquid.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: August 12, 2014
    Assignee: Heartland Technology Partners LLC
    Inventors: Bernard F. Duesel, Jr., Michael J. Rutsch, Craig Clerkin
  • Patent number: 8790496
    Abstract: A compact and portable liquid concentrator includes a gas inlet, a gas exit and a flow corridor connecting the gas inlet and the gas exit, wherein the flow corridor includes a narrowed portion that accelerates the gas through the flow corridor. A liquid inlet injects liquid into the gas stream at a point prior to the narrowed portion so that the gas-liquid mixture is thoroughly mixed within the flow corridor, causing a portion of the liquid to be evaporated. A demister or fluid scrubber downstream of the narrowed portion removes entrained liquid droplets from the gas stream and re-circulates the removed liquid to the liquid inlet through a re-circulating circuit. Fresh liquid to be concentrated is also introduced into the re-circulating circuit at a rate sufficient to offset the amount of liquid evaporated in the flow corridor.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: July 29, 2014
    Assignee: Heartland Technology Partners LLC
    Inventors: Bernard F. Duesel, Jr., Michael J. Rutsch, Craig Clerkin
  • Patent number: 8776879
    Abstract: Embodiments presented herein provide an evaporation based zero liquid discharge method for generation of up to 100% quality high pressure steam from produced water in the heavy oil production industry. De-oiled water is processed in an evaporation system producing a distillate that allows steam to be generated with either drum-type boilers operating at higher pressures or once-through steam generators (OTSGs) operating at higher vaporization rates. Evaporator blowdown is treated in a forced-circulation evaporator to provide a zero liquid discharge system that could recycle >98% of the deoiled water for industrial use. Exemplary embodiments of the invention provide at least one “straight sump” evaporator and at least one hybrid external mist eliminator. Embodiments of the evaporation method operate at a higher overall efficiency than those of the prior art by producing distillate at a higher enthalpy which minimizes the high pressure boiler preheating requirement.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: July 15, 2014
    Assignee: Aquatech International Corporation
    Inventors: Daniel P. Bjorklund, Gregory J. Mandigo, Richard M. Schoen, James Michael Marlett, Chandrakant Tiwari
  • Publication number: 20140157846
    Abstract: Methods and systems for treating bioreactor wastewater streams are provided. In some embodiments, the methods and systems involve producing a composition, for example in the form of a solution, comprising ammonia or ammonium from the bioreactor wastewater stream. In some cases, the bioreactor is an anaerobic digester.
    Type: Application
    Filed: December 12, 2012
    Publication date: June 12, 2014
    Applicant: ThermoEnergy Corporation
    Inventors: Sam S. Jeppson, Mark M. Simon, Thomas Karl Bisson
  • Patent number: 8652333
    Abstract: A process for removing a solvent from a source solution, said process comprising a) contacting the source solution with one side of a selectively permeable membrane, b) contacting a draw solution having a higher osmotic pressure (higher solute concentration) than the source solution with the opposite side of the membrane, such that solvent from the source solution passes across the membrane to dilute the draw solution by direct osmosis, c) removing solvent from the diluted draw solution to regenerate the draw solution, and d) recycling the regenerated draw solution to step a), characterized in that a portion of the draw solution is discarded or treated before and/or after the draw solution is regenerated in step c) so as to reduce the concentration of any solute species present in the draw solution from the source solution.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: February 18, 2014
    Assignee: Surrey Aquatechnology Limited
    Inventor: Peter Nicoll
  • Publication number: 20140021032
    Abstract: Systems and methods are provided for heating and manipulating a fluid to heat the fluid, evaporate water from the fluid, concentrate the fluid, separate the fluid into fractions; and/or pasteurize the fluid, comprising a closed-loop heating subsystem coupled to a primary fluid-to-fluid heat exchanger, and one or more fluid manipulation subsystems also coupled to the primary fluid-to-fluid heat exchanger.
    Type: Application
    Filed: July 21, 2013
    Publication date: January 23, 2014
    Inventor: FRANKLIN ALAN FRICK
  • Publication number: 20140021033
    Abstract: Systems and methods are provided for heating and manipulating a fluid to heat the fluid, evaporate water from the fluid, concentrate the fluid, separate the fluid into fractions; and/or pasteurize the fluid, comprising a closed-loop heating subsystem coupled to a primary fluid-to-fluid heat exchanger, and one or more fluid manipulation subsystems also coupled to the primary fluid-to-fluid heat exchanger.
    Type: Application
    Filed: September 13, 2013
    Publication date: January 23, 2014
    Inventor: FRANKLIN ALAN FRICK
  • Patent number: 8623174
    Abstract: A liquid evaporation system for evaporating clean water from a reservoir of wastewater includes a liquid evaporator to evaporate and separate water vapor from the wastewater in a confined space, an air blower to supply air to the liquid evaporator, and a wastewater heating system arranged to collect heat to heat the wastewater in the reservoir.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: January 7, 2014
    Assignee: Heartland Technology Partners LLC
    Inventors: Bernard F. Duesel, Jr., Craig Clerkin
  • Patent number: 8608966
    Abstract: The invention relates to a method and an apparatus for dewatering mixture of ethanol and water. The method comprises steps for feeding mixture of ethanol and water (1) into an evaporator (2), evaporating said mixture of ethanol and water (1) and feeding a stream of vaporized mixture of ethanol and water (3) to a vapor recompression unit (4), pressurizing vaporized mixture of ethanol and water (3) in the vapor recompression unit (4) and feeding a stream of pressurized vaporized mixture of ethanol and water (5) to a membrane unit (6), and dividing said stream of pressurized mixture of ethanol and water (5) in to a stream of mixture of ethanol and water (8) and into a stream of dewatered mixture of ethanol and water (7).
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: December 17, 2013
    Assignee: ST1 Biofuels Oy
    Inventors: Antti Pasanen, Mikko Ahokas
  • Patent number: 8603301
    Abstract: A method and apparatus for producing high purity distillate in evaporators. is useful for evaporation of waters where volatile silica or organic compounds are encountered such as in production of hydrocarbons from geological formations. An evaporator having a contaminant reduction system is provided. The contaminant reduction system includes an upflow first mist eliminator portion to remove entrained liquid droplets and produce an intermediate purity water vapor stream. A continuous spray system provides a spray of dilute caustic solution in a selected spray configuration for mass transfer contact with the passing intermediate purity water vapor stream, to remove volatile silica compounds therefrom, and produce a partially decontaminated steam stream having mist particles therein. An upflow second mist eliminator portion is provided to remove the residual mist particles, and produce a high purity water vapor stream. The high purity water vapor stream is condensed to provide a high purity distillate stream.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: December 10, 2013
    Assignee: General Electric Company
    Inventors: William F. Heins, Gregg L. Wilson
  • Patent number: 8603223
    Abstract: A water desalination system including at least one pair of evaporators, said pair including a high pressure and a low pressure evaporator, each for evaporating saline water to produce water vapor; at least three adsorption beds in selective vapor communication with each evaporator, said adsorption beds arranged to reversibly adsorb the water vapor from the corresponding evaporator; said adsorption beds in selective vapor communication with a condenser, and in heat transfer communication with a heat source for selectively desorbing the adsorbed water vapor; said condenser arranged to condense the water vapor to desalinated water; wherein said system is arranged to sequentially connect, for a pre-determined period, each evaporator to a corresponding adsorption bed, and the heat source to the third bed.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: December 10, 2013
    Assignee: National University of Singapore
    Inventors: Bidyut Baran Saha, Kim Choon Ng, Anutosh Chakraborty, Kyaw Thu
  • Patent number: 8591704
    Abstract: A fractionation process for producing at least two concentration fractions of a fluid including a solute, suspended or dissolved content using at least two fluidly connected evaporator units is provided. The process includes the steps of: feeding a feed fluid including a solute, suspended or dissolved content into at least a first evaporator unit; evaporating a first amount of fluid from the feed fluid in at least the first evaporator unit to produce a first concentrated fluid; feeding at least a portion of the first concentrated fluid into at least a second evaporator unit; and evaporating a second amount of fluid from the first concentrated fluid in at least the second evaporator unit to produce a second concentrated fluid.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: November 26, 2013
    Assignee: Creative Water Technology Ltd.
    Inventor: Stephen Shelley
  • Patent number: 8585869
    Abstract: Methods, systems, and/or apparatuses for treating wastewater produced at a thermoelectric power plant, other industrial plants, and/or other industrial sources are disclosed. The wastewater is directed through a wastewater concentrator including a direct contact adiabatic concentration system. A stream of hot feed gases is directed through the wastewater concentrator. The wastewater concentrator mixes the hot feed gases directly with the wastewater and evaporates water vapor from the wastewater. The wastewater concentrator separates the water vapor from remaining concentrated wastewater. A contained air-water interface liquid evaporator may be arranged to pre-process the wastewater before being treated by the wastewater concentrator.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: November 19, 2013
    Assignee: Heartland Technology Partners LLC
    Inventors: Bernard F. Duesel, Jr., Craig Clerkin
  • Patent number: 8586779
    Abstract: The present invention relates in general terms to a process for preparing alkyl methacrylates, comprising as steps: providing an acetone cyanohydrin by a process according to one of the preceding claims; contacting the acetone cyanohydrin with an inorganic acid to obtain a methacrylamide; contacting the methacrylamide with an alcohol in the presence of an inorganic acid in a reactor to obtain an alkyl methacrylate; continuously discharging at least a portion of the alkyl methacrylate from the reactor into a distillation column as a vapor stream; the discharge being effected by feeding a discharge stream comprising steam into the reactor, to an apparatus for preparing alkyl methacrylates, to a process for preparing polymers based at least partly on alkyl methacrylates, to the use of the alkyl methacrylates obtainable by the process according to the invention in chemical products, and to chemical products based on alkyl methacrylates obtainable by the process according to the invention.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: November 19, 2013
    Assignee: Evonik Röhm GmbH
    Inventors: Udo Gropp, Robert Weber, Thomas Schaefer, Andreas Perl, Rudolf Sing, Thomas Mertz
  • Patent number: 8535486
    Abstract: A water desalination system includes an evaporator for evaporating saline water to produce water vapor and an adsorption means in selective vapor communication with the evaporator for reversibly adsorbing the water vapor from the evaporator. The adsorption means is in selective vapor communication with a condenser, and desorbing means for desorbing the adsorbed water vapor from the adsorption means for collection by the condenser. The condenser is adapted to condense the water vapor to desalinated water.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: September 17, 2013
    Assignees: National University of Singapore, Kyushu University
    Inventors: Kim Choon Ng, Xiao-Lin Wang, Lizhen Gao, Anutosh Chakraborty, Bidyut Baran Saha, Shigeru Koyama, Atsushi Akisawa, Takao Kashiwagi
  • Patent number: 8524047
    Abstract: A method of dehydrating tolylenediamine which includes subjecting tolylenediamine having a water content of 5-40 wt. % to first-stage distillation at a vacuum of 13-101.3 kPa and subjecting the bottoms from the first-stage distillation to second-stage distillation at a vacuum lower than 13kPa.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: September 3, 2013
    Assignee: Mitsui Chemicals Inc.
    Inventors: Toshiyuki Ogawa, Mitsunaga Dohzaki, Masaaki Sasaki
  • Patent number: 8523980
    Abstract: An apparatus for water reclamation includes an inlet head for admitting warm humid ambient air, a buried pipe coupled at a first end to the inlet head and sloping downward in the ground from the first end. Water condenses as the air is cooled in the buried pipe and collects in a cistern coupled at a second end of the buried pipe. A tube coupled at a lower end near the second end of the buried pipe includes a heated element extending at least partially into the tube from an upper end of the tube. Cooled air is heated by the heated element and is expelled at the top of the tube. A heater is coupled to an upper end of the heated element. The heater may be a solar collector with a Bernoulli aperture.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: September 3, 2013
    Inventor: Javier Fernandez-Han
  • Patent number: 8512567
    Abstract: A desalination system wherein a latent heat of condensation produced by the temperature gradient across a membrane distillation (MD) module is transferred directly to a latent heat of vaporization during desalination of a liquid flow stream. The desalination system comprises the MD module disposed within an object and configured to receive an input feed stream for desalination and produce an output flow stream of a product. The system also comprises a vapor compressor in fluidic communication with the MD module and configured to introduce a hot steam to a high temperature side of the MD module and extract a cool steam, having a temperature less than the hot steam, from a low temperature side of the MD module, thereby creating a temperature gradient across of the MD module. A desalination method is also presented.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: August 20, 2013
    Assignee: General Electric Company
    Inventor: Andrew Philip Shapiro
  • Patent number: 8469091
    Abstract: Embodiments presented herein provide an evaporation based zero liquid discharge method for generation of up to 100% quality high pressure steam from produced water in the heavy oil production industry. De-oiled water is processed in an evaporation system producing a distillate that allows steam to be generated with either drum-type boilers operating at higher pressures or once-through steam generators (OTSGs) operating at higher vaporization rates. Evaporator blowdown is treated in a forced-circulation evaporator to provide a zero liquid discharge system that could recycle >98% of the deoiled water for industrial use. Exemplary embodiments of the invention provide at least one “straight sump” evaporator and at least one hybrid external mist eliminator. Embodiments of the evaporation method operate at a higher overall efficiency than those of the prior art by producing distillate at a higher enthalpy which minimizes the high pressure boiler preheating requirement.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: June 25, 2013
    Assignee: Aquatech International Corporation
    Inventors: Daniel P. Bjorklund, Gregory J. Mandigo, Richard M. Schoen, James Michael Marlett, Chandrakant Tiwari
  • Publication number: 20130118889
    Abstract: A method of producing one or more precipitable substances such as salt (NaCl) from a feed liquid source (such as sea water) in a precipitation apparatus, the method involving steps of providing a first solar energy treatment arrangement having at least one treatment panel construction having an upper solar energy transmission wall capable of passing solar energy to a treatment member located beneath the upper solar energy transmission wall, the or each treatment panel construction being arranged to receive liquid from the feed liquid source, the solar radiation energy concentrating the precipitable substance or substances in the treatment liquid within the or each said treatment panel construction, the method further sensing via a sensor the density of the treatment liquid discharged from the first solar energy treatment arrangement, returning the liquid discharged from the first solar energy treatment apparatus to an inlet region of the first solar energy treatment apparatus if the sensed density is below a
    Type: Application
    Filed: April 7, 2011
    Publication date: May 16, 2013
    Applicant: FIRST GREEN PARK PTY LTD
    Inventor: Peter Johnstone
  • Patent number: 8428753
    Abstract: The disclosure relates to a system and a method for planning the operation of, monitoring processes in, simulating, and/or optimizing a technical installation comprising several units that can be combined with each other. Said system comprises at least one process planning module, at least one process simulation module, and at least one process optimization module. Components for modeling, simulating, and optimizing the technical installation are stored in said modules. The interrelated modules cooperate with a data management layer via at least one interface, said data management layer making available actual measured and/or historical process data for determining parameters and/or operational data for the modules in order to plan operations as well as simulate and optimize processes. The parameters and/or operational data determined in the modules can be fed to the data management layer for further processing by taking into account the stored components.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: April 23, 2013
    Assignee: ABB Technology AG
    Inventors: Markus Gauder, Rolf Schmitt, Stefan Lauxtermann
  • Patent number: 8343316
    Abstract: A vacuum dehydrator for processing an oil containing entrained contaminants such as water, air, and particulates comprises a tower enclosing upper and lower chambers. A random packing is contained in the upper chamber. The oil is preheated to a temperature above the boiling point of water and is introduced into the upper chamber for downward flow through the random packing into the lower chamber. Entrained air and water is retained as water vapor in the upper chamber, and particulates are retained in the random packing. Heated ambient air is introduced into the lower chamber for upward flow through the random packing into the upper chamber, and the upper chamber is cooled to condense the water vapor. Oil and condensed water are pumped respectively from the lower and upper chambers.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: January 1, 2013
    Assignee: Siemens Industry, Inc.
    Inventors: Mortimer Daniel Williams, John G. Donnelly, Eric M. Laliberte, J. Rafael Lazo, Juan Alejandro Segrelles Sacristan, Anselmo Garcia Gracia
  • Publication number: 20120279847
    Abstract: The invention disclosed and claimed herein relates to treatment of water contaminated with glycol to be recycled for further effective use of the cleaned water resulting therefrom, especially at airports. More specifically, this invention relates to improved techniques for efficiently and reliably generating continuous flows of cleaned water as well as a continuous flow of recyclable glycol water of controlled concentration.
    Type: Application
    Filed: July 20, 2012
    Publication date: November 8, 2012
    Inventor: Brad Michael MALATESTA
  • Patent number: 8273156
    Abstract: Contaminated water stored in an equalization basin is distributed to one or more flash vessels and a desired vacuum is pulled in a filled flash vessel, reducing the boiling point of the contained contaminated water. The suction force is preferably created by passing the contaminated water under pressure through a differential pressure injector. The contaminated water in the flash vessel completes an electrical circuit between conductive plates and a heating element that are submerged therein. An alternating electrical current is applied, some of which is conducted by the contaminated water to a heating element that heats the water, and the rest of which dissipates as thermal energy, heating the contaminated water. The alternating current is preferably generated by passing the contaminated water under pressure through a hydroelectric power generator. Little thermal energy is needed to evaporate the contaminated water, which condenses at the top of the flash vessel and is collected from a collection trough.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: September 25, 2012
    Inventor: Eric John Dole
  • Patent number: 8257557
    Abstract: A dehydration method for removing water from a hydrolysis reaction mixture containing unreacted water generated when monochlorobenzene is hydrolyzed to produce phenol, the method for dehydrating the hydrolysis reaction mixture includes supplying a hydrolysis reaction mixture to a distillation tower, supplying a liquid containing monochlorobenzene to the tower top portion of the distillation tower, and removing the substantially whole amount of the water in the hydrolysis reaction mixture together with monochlorobenzene from the tower top portion by distillation.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: September 4, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tateo Seo, Tetsuya Suzuta, Toshiaki Ui
  • Patent number: 8216351
    Abstract: An Apparatus for purifying a feed stream containing carbon dioxide in which the feed stream, after having been compressed and dried, is partly cooled and then used to reboil a stripping column. Thereafter, the feed stream is further cooled and expanded to a lower operational temperature of the stripping column. A carbon dioxide product stream composed of the liquid column bottoms of the stripping column is expanded at one or more pressures to generate refrigeration, then fully vaporized within the main heat exchanger and compressed by a compressor to produce a compressed carbon dioxide product. Refrigeration is recovered in the main heat exchanger from a column overhead stream extracted from the stripping column within the main heat exchanger either directly or indirectly by auxiliary processing in which carbon dioxide is further separated and optionally recycled back to the main compressor used in compressing the feed stream.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: July 10, 2012
    Assignee: Praxair Technology
    Inventors: Minish Mahendra Shah, Henry Edward Howard
  • Patent number: 8128787
    Abstract: Processes for removing water from organic solvents, such as ethanol. The processes include distillation in two columns operated at sequentially higher pressure, followed by treatment of the overhead vapor by one or two membrane separation steps.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: March 6, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Nicholas P. Wynn, Yu Huang, Masakatsu Urairi, Richard W Baker
  • Patent number: 8114255
    Abstract: Processes for removing water from organic solvents, such as ethanol. The processes include distillation in two columns operated at sequentially higher pressure, followed by treatment of the overhead vapor by one or two membrane separation steps.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: February 14, 2012
    Assignee: Membrane Technology & Research, Inc.
    Inventors: Leland M Vane, Franklin R Alvarez, Yu Huang, Richard W Baker
  • Publication number: 20120018293
    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 vapour from said first distillation vessel and feeding it to a second distillation vessel; (c) withdrawing water vapour 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 fir
    Type: Application
    Filed: January 22, 2010
    Publication date: January 26, 2012
    Applicant: STATOIL PETROLEUM AS
    Inventors: Baard Kaasa, Per Halvard Billington
  • Patent number: 8101048
    Abstract: This invention relates to methods of removing impurities from compounds having similar volatilities to form ultra high purity compounds.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: January 24, 2012
    Assignee: Rohm and Haas Company
    Inventors: Francis Joseph Lipiecki, Stephen G Maroldo, Deodatta Vinayak Shenai-Khatkhate, Robert A. Ware
  • Patent number: 8092656
    Abstract: A process for treatment of an aqueous stream to produce a low solute containing distillate stream and a high solute/solids containing blowdown stream utilizing a method to increase the efficiency of an evaporator while providing an essentially scale free environment for the heat transfer surface. Multi-valent ions and non-hydroxide alkalinity are removed from aqueous feed streams to very low levels and then the pH is increased preferably to about 9 or higher to increase the ionization of low ionizable constituents in the aqueous solution. In this manner, species such as silica and boron become highly ionized, and their solubility in the concentrated solution that is present in the evaporation equipment is significantly increased. The result of this is high allowable concentration factors and a corresponding increase in the recovery of high quality reusable water with essentially no scaling.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: January 10, 2012
    Assignee: Aquatech International Corporation
    Inventors: Keith R. Minnich, Ramkumar Karlupudi, Richard M. Schoen
  • Publication number: 20110278151
    Abstract: A method for recovering base oil from waste lubricating oil by separating base oil range constituents from a waste lubricating oil mixture, thereafter separating higher quality base oil constituents and lower quality base oil constituents from the base oil recovered from the waste lubricating oil mixture and thereafter treating the lower quality base oil constituents to produce marketable base oil. The total base oil produced from a waste lubricating oil mixture by this process is greater than the quantity producible by previous processes using only base oil separation from the waste lubricating oil mixture or processes which use only treatment of the base oil recovered from the waste lubricating oil mixture to produce the product base oil.
    Type: Application
    Filed: May 16, 2011
    Publication date: November 17, 2011
    Inventor: Martin R. MacDonald
  • Patent number: 8048309
    Abstract: A method for disposing of carbon dioxide is provided. According to the invention, CO2 is dissolved in seawater and the salinity of the seawater is increased to produce CO2-containing brine. The CO2-containing brine is denser than the seawater from which it is made. Therefore, when it is released into the ocean, the CO2-containing brine sinks to depth and sequesters the carbon dioxide. The brine may be produced by forming CO2 hydrate, which extracts fresh water from the seawater. Alternatively, the brine may be produced by forming water ice from the seawater and injecting CO2 into the seawater either before or, more preferably, after the water ice has been formed.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: November 1, 2011
    Assignee: Water Generating Systems, LLC
    Inventors: John P. Osegovic, Michael D. Max, Shelli R. Tatro
  • Patent number: 7967955
    Abstract: A process for treating produced water to generate high pressure steam. Produced water from heavy oil recovery operations is treated by de-oiling the produced water to provide a de-oiled evaporator feedwater that is fed to an evaporator. The pretreated produced water stream is evaporated to produce (1) a distillate having a trace amount of residual solutes therein, and (2) evaporator blowdown containing substantially all solutes from the de-oiled produced water feed. The distillate may be directly used, or polished to remove the residual solutes therein, before being fed to a steam generator. Steam generation in a once-through steam generator, or in a packaged boiler such as a water tube boiler having a steam drum and a mud drum with water cooled combustion chamber walls, produces high pressure steam for down-hole use.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: June 28, 2011
    Assignee: GE Ionics, Inc.
    Inventor: William F. Heins
  • Publication number: 20110108408
    Abstract: A vacuum dehydrator for processing an oil containing entrained contaminants such as water, air, and particulates comprises a tower enclosing upper and lower chambers. A random packing is contained in the upper chamber. The oil is preheated to a temperature above the boiling point of water and is introduced into the upper chamber for downward flow through the random packing into the lower chamber. Entrained air and water is retained as water vapor in the upper chamber, and particulates are retained in the random packing. Heated ambient air is introduced into the lower chamber for upward flow through the random packing into the upper chamber, and the upper chamber is cooled to condense the water vapor. Oil and condensed water are pumped respectively from the lower and upper chambers.
    Type: Application
    Filed: November 10, 2009
    Publication date: May 12, 2011
    Applicant: MORGAN CONSTRUCTION COMPANY
    Inventors: Mortimer Daniel Williams, John G. Donnelly, Eric M. Laliberte, J. Rafael Lazo, Juan Alejandro Segrelles Sacristán, Anselmo Garcia Gracia
  • Patent number: 7731854
    Abstract: An in situ system used for treating an oil and gas well drilling fluid and treating water after a well is completed. The system includes a fluid treatment unit used in a reserve pit and a water treatment unit disposed next to the pit. The fluid treatment unit includes a floating electrocoagulation unit in the reserve pit for destabilizing contaminates in the fluid and dropping out stable precipitates. The clear treated fluid is then pumped, using a submersible pump, to the water treatment unit. The water treatment includes a number of components including a pre-filter, an activated carbon filter and a heat exchanger for first treating the fluid. The filtered and heated fluid is then piped into a reverse osmosis unit for removing salt and any remaining minerals found therein. From the reverse osmosis unit, approximately 70 to 80% of the filtered water is cleaned and piped to a clean water storage tank for reuse.
    Type: Grant
    Filed: February 15, 2007
    Date of Patent: June 8, 2010
    Assignee: H2O Tech, Inc.
    Inventor: Robert J. Herbst
  • Publication number: 20100096250
    Abstract: A process for obtaining process water by condensation of mist or by evaporation of water comprising salts or impurities and condensation of the evaporated water, and plants for carrying out the process and the use thereof for obtaining drinking water.
    Type: Application
    Filed: February 5, 2008
    Publication date: April 22, 2010
    Applicant: BASF SE
    Inventors: Hans-Jürgen Quadbeck-Seeger, Armin Alteheld, Klaus Hahn, Dietrich Scherzer, Christof Mock, Bernhard Vath
  • Patent number: 7666251
    Abstract: Method of purifying a feed stream containing carbon dioxide wherein the feed stream after having been compressed and dried is partly cooled and then used to reboil a stripping column. Thereafter, the feed stream is further cooled and expanded to a lower operational temperature of the stripping column. A carbon dioxide product stream composed of the liquid column bottoms of the stripping column is expanded at one or more pressures to generate refrigeration, then fully vaporized within the main heat exchanger and compressed by a compressor to produce a compressed carbon dioxide product. Refrigeration is recovered in the main heat exchanger from a column overhead stream extracted from the stripping column within the main heat exchanger either directly or indirectly by auxiliary processing in which carbon dioxide is further separated and optionally recycled back to the main compressor used in compressing the feed stream.
    Type: Grant
    Filed: April 3, 2006
    Date of Patent: February 23, 2010
    Assignee: Praxair Technology, Inc.
    Inventors: Minish Mahendra Shah, Henry Edward Howard
  • Publication number: 20090166171
    Abstract: Membrane tubes or similar membrane devices are arrayed in layers so that liquid placed on their outer surfaces may be evaporated and also drain onto lower membrane devices. The entire array is subjected to moving air to enhance evaporation. The membrane devices function as filters while permeating water from industrial fluids while also providing evaporative surfaces to reduce the volume of used aqueous industrial fluids. The retentate surfaces of the membrane devices may also be on the interiors of the devices, and the permeate contacted with flowing air to evaporate the permeate. Unevaporated permeate is collected in either configuration for use as clean water, and concentrated fluid may be more easily handled, disposed or, and/or its components recycled. A cavitation device may be used to heat the aqueous industrial fluid to enhance permeation and evaporation rates with minimal scaling.
    Type: Application
    Filed: January 2, 2008
    Publication date: July 2, 2009
    Inventors: Kevin W. Smith, Robert L. Sloan, Patrick F. Hobbs, Harry D. Smith, JR.
  • Publication number: 20090159422
    Abstract: A dehydration method for removing water from a hydrolysis reaction mixture containing unreacted water generated when monochlorobenzene is hydrolyzed to produce phenol, the method for dehydrating the hydrolysis reaction mixture comprising the steps of supplying a hydrolysis reaction mixture to a distillation tower, supplying a liquid containing monochlorobenzene to the tower top portion of the distillation tower, and removing the substantially whole amount of the water in the hydrolysis reaction mixture together with monochlorobenzene from the tower top portion by distillation.
    Type: Application
    Filed: August 29, 2006
    Publication date: June 25, 2009
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tateo Seo, Tetsuya Suzuto, Toshiaki Ui
  • Patent number: 7517435
    Abstract: Mercury is removed from solutions contaminated with mercury, the solution contaminated with mercury being introduced into a distillation column above the column bottom, solvent being distilled off and solution depleted in mercury being stripped off at the column bottom.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: April 14, 2009
    Assignee: BASF SE
    Inventors: Josef Guth, Holger Friedrich, Hans-Jürgen Bender, Dieter Schlafer
  • Publication number: 20090071812
    Abstract: A system and method for removing water from a liquid desiccant such as a glycol used to dry cooled air in order to restore the desiccant to a purity up to around 97% in a closed continuous flow process. Liquid desiccant can be sprayed into cooled air in a conditioner where it gains moisture. The wet or gained desiccant can be optionally preheated in an economizing heat exchanger and then routed into a concentrator. Desiccant pure to around 97% can be removed from the concentrator, passed through an economizing heat exchanger to provide the preheating and returned to the conditioner holding area. The concentrator can be heated by steam or other means such as natural gas to boil the wet desiccant causing mixed vapor to enter a vertical distillation column where most of the glycol condenses out on the column packing or plates and returns to the concentrator.
    Type: Application
    Filed: September 14, 2007
    Publication date: March 19, 2009
    Inventors: Matthew Koban, Phillip Rowland, Michael Harvey, Peter Demakos
  • Patent number: 7488421
    Abstract: Water processing method, in particular for producing fresh water from salt water by membrane distillation. In comparison with previously known methods, a significant reduction in investment cost and operating cost can be achieved by the combination of the following measures: The water to be processed is kept in a supply chamber the wall of which is formed at least in part by a hydrophobic membrane being permeable for water vapor. A hydrophilic membrane having a greater thickness in comparison with the hydrophobic membrane and a lower thermal conductivity per unit area runs in parallel with the hydrophobic membrane. By the pumping action a vapor pressure difference is produced between the water to be processed and the fresh water so that the membrane distillation is driven by the vapor pressure difference resulting from the pumping action, the water condensing in the pores of the hydrophilic membrane.
    Type: Grant
    Filed: April 24, 2004
    Date of Patent: February 10, 2009
    Assignee: Clean Water Gesellschaft Fuer Wasseraufbereitungstechnik mbH
    Inventors: Guenther Hambitzer, Heide Biollaz, Markus Borck, Christiane Ripp