With Chemical Reaction Patents (Class 203/28)
  • Patent number: 9738585
    Abstract: The present disclosures and inventions relate to methods for the preparation of acetic acid via the oxidation of ethane, including the preparation of high purity acetic acid that comprises very low concentrations of formic acid impurity. More specifically, described herein are methods for producing acetic acid comprising: a. producing a crude acetic acid composition comprising formic acid from ethane via ethane oxidation; and then b. purifying the crude acetic acid composition by crystallization to remove formic acid to achieve a purified acetic acid composition; wherein the formic acid is present in the purified acetic acid composition in an amount less than 0.2% by weight, based on the total weight of the purified acetic acid composition.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: August 22, 2017
    Assignee: SAUDI BASIC INDUSTRIES CORPORATION
    Inventor: Mustapha N. Karime
  • Patent number: 9120685
    Abstract: A method for treatment of produced water, particularly deoiled water, by evaporation. Methods use a vertical tube heat exchanger bundle where the brine is distributed in a falling film along the inside of the tube wall. Condensing steam causes a portion of the deoiled water to evaporate; this water vapor travels upward in a counterflow direction relative to the deoiled water. Evaporator sump volume is minimized, and evaporators may have a multi-piece construction to lower the center of gravity of an evaporator installation. This technology provides several advantages over conventional vertical tube co-current flow evaporators (where the vapor flows downward with the falling film). These advantages include a minimal total installed cost (TIC) and enhanced water chemistry management.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: September 1, 2015
    Assignee: AQUATECH INTERNATIONAL CORPORATION
    Inventors: Daniel P. Bjorklund, David Kersey, Gregory J. Mandigo, Chandrakant Tiwari
  • Publication number: 20150034474
    Abstract: The present invention relates to a process for obtaining food grade hexane, comprising: fractionating a hydrocarbon feed having a boiling point in the range of 50° C. to 140° C. to obtain a hydrocarbon fraction having boiling point in the range of 63° C. to 69° C. and having 3%-15% (wt/wt) of aromatic compounds content; extracting the hydrocarbon fraction by counter current solvent extraction using sulfolane as a solvent to obtain a first raffinate phase; extracting the first raffinate phase by co-current solvent extraction using sulfolane as a solvent to obtain a second raffinate phase; and washing the second raffinate phase with water to obtain a food grade hexane containing less than 100 ppm of aromatic compounds.
    Type: Application
    Filed: March 18, 2013
    Publication date: February 5, 2015
    Applicant: BHARAT PETROLEUM CORPORATION LTD
    Inventors: Pragya Rai, Jose Nehamiah, Chiranjeevi Thota, Dattatraya Tammannashastri Gokak, Poyyamani Swaminathan Viswanathan, Shashikant Shukla, Buddhadeb Kundu, Satish Kumar Goel
  • Patent number: 8845863
    Abstract: Processes and systems for purifying ethylene oxide, including introducing a feed stream including ethylene oxide to a heat exchanger to heat the feed stream, feeding the heated feed stream to a distillation apparatus base below a first stage, removing from the distillation apparatus an impurity fraction as a top exit stream from the distillation apparatus located at a top take-off on the distillation apparatus, removing from the distillation apparatus an ethylene oxide stream of 99.7 weight percent purity, based on the total weight of the ethylene oxide stream, from the distillation apparatus, and removing from the distillation apparatus an aldehyde enriched fraction as a bottom stream from the distillation apparatus, where the aldehyde enriched fraction is fed directly to a glycol reactor.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: September 30, 2014
    Assignee: Dow Technology Investments LLC
    Inventors: Clarence P. Stadlwieser, Bernie B. Osborne, John P. Dever, Harvey E. Andresen, Michael L. Hutchison, Steven R. Osborne, Liping L. Zhang, Michael Habenschuss, Andrew Addie, Donald R. Culp
  • Publication number: 20140284202
    Abstract: Distillative process for obtaining ditrimethylolpropane from solutions includes separating ditrimethylolpropane from the solution in a first distillation unit into a first tops fraction comprising low-boiling compounds having a lower boiling point than ditrimethylolpropane and a first bottoms fraction; introducing the first bottoms fraction into a second distillation unit having at least 5 theoretical plates, said unit being configured as a thin-film evaporator with a column attachement and drawing off a second tops fraction comprising intermediate-boiling compounds having a lower boiling point than ditrimethylolpropane as well as withdrawing a second bottoms fraction from the second distillation unit and introducing the second bottoms fraction into a third distillation unit having at least 4 theoretical plates, said unit being configured as a thin-film evaporator with a column attachement, such that ditrimethylolpropane is obtained as a third tops fraction and high boilers are removed as a third bottoms frac
    Type: Application
    Filed: October 24, 2012
    Publication date: September 25, 2014
    Inventors: Guido D. Frey, Norman Nowotny, Kurt Schalapski, Heinz Strutz
  • 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: 8741145
    Abstract: A method for producing biofuels is provided. A method of making biofuels includes dewatering substantially intact algal cells to make an algal biomass, extracting neutral lipids from the algal biomass, and esterifying the neutral lipids with a catalyst in the presence of an alcohol. The method also includes separating a water soluble fraction comprising glycerin from a water insoluble fraction comprising fuel esters and distilling the fuel esters under vacuum to obtain a C16 or shorter fuel esters fraction, a C16 or longer fuel ester fraction, and a residue comprising carotenoids and omega-3 fatty acids. The method further includes hydrogenating and deoxygenating at least one of (i) the C16 or shorter fuel esters to obtain a jet fuel blend stock and (ii) the C16 or longer fuel esters to obtain a diesel blend stock.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: June 3, 2014
    Assignee: Heliae Development, LLC
    Inventor: Aniket Kale
  • Publication number: 20140097078
    Abstract: A click chemistry process to be performed with an automated synthesis device using a synthesis cassette includes the steps of performing a chemical reaction in a first vessel at a first elevated temperature, heating the first vessel to a second elevated temperature to cause distillation, delivering a distilled reaction product from the first vessel to a second vessel, performing a click chemistry reaction with the distilled reaction product in the second vessel, purifying the click chemistry product, and formulating a final product from the purified click chemistry product. A cassette and a kit of parts for performing the process are also provided.
    Type: Application
    Filed: June 7, 2012
    Publication date: April 10, 2014
    Applicant: GE HEALTHCARE LIMITED
    Inventors: Lisa Iddon, Rajiv Bhalla, ANTHONY Wilson
  • Publication number: 20130344554
    Abstract: A method of processing stillage by hydrothermally fractionating stillage to create unique product fractions, by heating the stillage to a temperature of 250 degrees F. to 350 degrees F., and recovering a stickwater fraction from the stillage. Stickwater, oil, biomass, bio-products, extracts, metabolites, and treated water obtained from the method above. A method of performing ethanol fermentation by hydrothermally fractionating stillage to create unique product fractions by heating the stillage to a temperature of 250 degrees F. to 350 degrees F., separating the stillage into a ProFat fraction and a stickwater fraction, and recovering oil from the ProFat fraction.
    Type: Application
    Filed: April 25, 2013
    Publication date: December 26, 2013
    Applicant: Valicor, Inc.
    Inventors: James Robert Bleyer, Thomas J. Czartoski, Puneet Chandra
  • Patent number: 8609909
    Abstract: Processes for the preparation and purification of hydrofluoroolefins such as tetrafluorinated propenes. A process is provided for separating a first hydrofluoroolefin from a second hydrofluoroolefin by a) providing a mixture including a first hydrofluoroolefin and a second hydrofluoroolefin, which first hydrofluoroolefin is preferentially more reactive with an amine than the second hydrofluoroolefin; b) adding a sufficient amount of an amine to the mixture to form a combination including the second hydrofluoroolefin and a reaction product of the first hydrofluoroolefin and the amine; and then c) separating the reaction product from the combination. This is particularly useful for removing 1,2,3,3,3-pentafluoropropene (HFO-1225ye) impurities from the hydrofluoroolefin 2,3,3,3-tetrafluoropropene (HFO-1234yf). HFO-1234yf is a refrigerant with low global warming potential.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: December 17, 2013
    Assignee: Honeywell International Inc.
    Inventors: Ryan Hulse, Rajiv Ratna Singh, Ian Shankland, Michael Van Der Puy
  • Patent number: 8584374
    Abstract: The invention relates to a method for removing water from a mixture containing at least one compound having at least one group reactive towards isocyanate and containing water, the mixture being applied to the surface of a rotating body A, the mixture flowing over the surface of the rotating body A to an outer region of the surface of the rotating body A and water evaporating from the mixture. In particular, this method is suitable for removing water from alcohols and amines.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: November 19, 2013
    Assignee: Construction Research & Technology GmbH
    Inventors: Simone Klapdohr, Burkhard Walther, Helmut Mack, Zhizhong Cai, Laurent Marc, Jochen Mezger, Tobias Austermann, Silke Flakus
  • Publication number: 20130228447
    Abstract: Recovering high purity benzene from hydrocarbon feedstock containing aromatics and non-aromatics is implemented by simple and low-cost modifications to conventional extractive distillation columns (EDCs). Methyl cyclohexane (MCH) that is generated through non-selective hydrogenation of toluene in hydrodesulfurization (HDS) units is a major contaminant in benzene production. To meet MCH specifications, often times the extractive distillation (ED) process for recovering purified benzene is operated with excessive benzene loss to the overhead raffinate stream, producing a lower quality non-aromatic product.
    Type: Application
    Filed: March 1, 2012
    Publication date: September 5, 2013
    Applicants: AMT International, Inc., CPC Corporation, Taiwan
    Inventors: Kuang-Yeu Wu, Tzong-Bin Lin, Fu-Ming Lee, Tsung-Min Chiu, Jeng-Cheng Lee
  • Patent number: 8435387
    Abstract: The present invention generally relates to the small-scale separation of a mixture of two or more components with different boiling points into enriched fractions. In some embodiments, a first and second fluid (e.g., a liquid and a gas, a liquid and a liquid, etc.) are passed through a channel. The first fluid may include at least two components, each with a unique boiling point. Upon contacting the first and second fluids within the channel, at least a portion of the most volatile of the components in the first fluid (i.e., the component with the lowest boiling point) may be transferred from the first fluid to the second fluid. In some instances, the transfer of the volatile component(s) from the first fluid to the second fluid may be expedited by heating, in some cases above the boiling point(s) of the component(s) to be transferred from the first fluid to the second fluid. Contact between the first and second fluids may be maintained, for example, via segmented flow, bubbling flow, etc.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: May 7, 2013
    Assignee: Massachusetts Institute of Technology
    Inventors: Ryan L. Hartman, Hemantkumar R. Sahoo, Klavs F. Jensen
  • Patent number: 8410329
    Abstract: A polyethylene production process, comprising contacting ethylene and a polymerization catalyst under suitable reaction conditions to yield a polymerization product stream, separating a light gas stream from the polymerization product stream, wherein the light gas stream comprises ethane and unreacted ethylene, contacting the light gas stream with an absorption solvent system, wherein at least a portion of the ethylene from the light gas stream is absorbed by the absorption solvent system, removing unabsorbed gases of the light gas stream from contact with the absorption solvent system to form a waste gas stream, and recovering ethylene from the absorption solvent system.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: April 2, 2013
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: John D. Hottovy, Ted Cymbaluk
  • Publication number: 20130001063
    Abstract: A mixture containing methyldichlorosilane, tetrachlorosilane, and trichlorosilane is distilled to fractionate a fraction with a higher content of methyldichlorosilane than the mixture before distillation. Subsequently, the fraction thus fractionated is heated to disproportionate chlorine between methyldichlorosilane and tetrachlorosilane to disproportionate methyldichlorosilane into methyltrichlorosilane. Subsequently, the fraction after disproportionation containing methyltrichlorosilane is purified by distillation to separate high-purity trichlorosilane. Having a close boiling point to that of trichlorosilane (32° C.), which is a target product to be purified by distillation, removal of methyldichlorosilane (boiling point of 41° C.) has been difficult. The present invention removes methyldichlorosilane more easily by converting it into methyltrichlorosilane (boiling point of 66° C.) through disproportionation of chlorine between methyldichlorosilane and tetrachlorosilane.
    Type: Application
    Filed: March 1, 2011
    Publication date: January 3, 2013
    Applicant: SHIN-ETSU CHEMICAL CO., LTD
    Inventors: Shuji Tanaka, Masaki Tabata
  • Patent number: 8313648
    Abstract: A method for producing biofuels is provided that includes dewatering intact algal cells to make an algal biomass, extracting neutral lipids from the algal biomass, and esterifying the neutral lipids with a catalyst in the presence of an alcohol. The method also includes separating a water soluble fraction comprising glycerin from a water insoluble fraction comprising fuel esters and distilling the fuel esters under vacuum to obtain a C16 or shorter fuel esters fraction, a C16 or longer fuel ester fraction, and a residue comprising carotenoids and omega-3 fatty acids. The method further includes hydrodeoxygenating at least one of (i) the C16 or shorter fuel esters to obtain a jet fuel blend stock and (ii) the C16 or longer fuel esters to obtain a diesel blend stock. The method further includes supplying the hydrogenation and deoxygenation processes with hydrogen produced from reformed light hydrocarbons or an algae culture.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: November 20, 2012
    Assignee: Heliae Development, LLC
    Inventors: Aniket Kale, Luca Costantino Zullo, Sandip Shinde
  • Patent number: 8308951
    Abstract: A method for separating proteins from plant material, in particular, intact algal cells, using an amphipathic solvent set and a hydrophobic solvent set. Some embodiments include dewatering intact algal cells and then extracting proteins from the algal cells. The methods provide for single and multistep extraction processes which allow for efficient separation of algal proteins from a wet algal biomass. These proteins are high value products which can be used as renewable sources of food and food additives. Neutral lipids remaining in the algal biomass after extraction of proteins can be used to generate renewable fuels.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: November 13, 2012
    Assignee: Heliae Development, LLC
    Inventor: Aniket Kale
  • Patent number: 8308949
    Abstract: Methods for selective extraction and fractionation of algal lipids and algal products are disclosed. A method of selective removal of products from an algal biomass provides for single and multistep extraction processes which enable efficient separation of algal components. Among these components are neutral lipids synthesized by algae, which are extracted by the methods disclosed herein for the production of renewable fuels.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: November 13, 2012
    Assignee: Heliae Development, LLC
    Inventor: Aniket Kale
  • Patent number: 8293108
    Abstract: A method for producing biofuels is provided. A method of making biofuels includes dewatering substantially intact algal cells to make an algal biomass, extracting neutral lipids from the algal biomass, and esterifying the neutral lipids with a catalyst in the presence of an alcohol. The method also includes separating a water soluble fraction comprising glycerin from a water insoluble fraction comprising fuel esters and distilling the fuel esters under vacuum to obtain a C16 or shorter fuel esters fraction, a C16 or longer fuel ester fraction, and a residue comprising carotenoids and omega-3 fatty acids. The method further includes hydrogenating and deoxygenating at least one of (i) the C16 or shorter fuel esters to obtain a jet fuel blend stock and (ii) the C16 or longer fuel esters to obtain a diesel blend stock.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: October 23, 2012
    Assignee: Heliae Developmet, LLC
    Inventor: Aniket Kale
  • Patent number: 8273248
    Abstract: A method for separating neutral lipids from plant material, in particular, intact algal cells, using an amphipathic solvent set and a hydrophobic solvent set. Some embodiments include dewatering intact algal cells and then extracting neutral lipids from the algal cells. The methods provide for single and multistep extraction processes which allow for efficient separation of algal neutral lipids from a wet algal biomass while avoiding emulsification of extraction mixtures. The neutral lipids are removed after first removing a polar lipid fraction and a protein fraction. These neutral lipids can be used to generate renewable fuels as well as food products and supplements.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: September 25, 2012
    Assignee: Heliae Development, LLC
    Inventor: Aniket Kale
  • Publication number: 20120238740
    Abstract: The present invention provides novel and advantageous processes for preparing and purifying pharmaceuticals The processes comprise a nucleophilic reaction wherein a modified leaving group LM, which has increased lipophilicity, of a vector in a nucleophilic reaction which offers a convenient and time-saving way to purify the product from non-reacted precursors vector-LM and by-products LM.
    Type: Application
    Filed: July 6, 2010
    Publication date: September 20, 2012
    Applicant: BAYER PHARMA AKTIENGESELLSCHAFT
    Inventors: Keith Graham, Mathias Berndt, Dae Yoon Chi, Byoung Se Lee, Sandip S. Shinde, Hee Seup Kil, Sang Ju Lee, Jin-Sook Ryu, Seung Jun Oh
  • Patent number: 8246792
    Abstract: Processes for making SA from either a clarified DAS-containing fermentation broth or a clarified MAS-containing fermentation broth that include distilling the broth under super atmospheric pressure at a temperature of >100° C. to about 300° C. to form an overhead that comprises water and ammonia, and a liquid bottoms that includes SA, and at least about 20 wt % water; cooling the bottoms to a temperature sufficient to cause the bottoms to separate into a liquid portion and a solid portion that is substantially pure SA; and separating the solid portion from the liquid portion. A method also reduces the broth distillation temperature and pressure by adding an ammonia separating and/or water azeotroping solvent to the broth.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: August 21, 2012
    Assignee: BioAmber S.A.S.
    Inventors: Olan S. Fruchey, Brian T. Keen, Brooke A. Albin, Nye A. Clinton, Dilum Dunuwila, Bernard D. Dombek
  • Patent number: 8163139
    Abstract: Processes comprising: providing a mixture comprising monoethylene glycol and diethylenetriamine; and subjecting the mixture to extractive distillation with a diethylenetriamine-selective solvent comprising triethylene glycol to provide a first stream comprising monoethylene glycol and a second stream comprising diethylenetriamine; wherein the first stream is substantially free of diethylenetriamine, and wherein the second stream is substantially free of monoethylene glycol.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: April 24, 2012
    Assignee: BASF SE
    Inventors: Karin Pickenäcker, Johann-Peter Melder, Bram Willem Hoffer, Thomas Krug, Gunther van Cauwenberge, Frank-Friedrich Pape
  • Publication number: 20120090980
    Abstract: This invention relates to processes for producing acetic acid and, in particular, to improved processes for recovering C2+ alkyl halides and removing permanganate reducing compounds formed during the carbonylation of methanol in the presence of a Group VIII metal carbonylation catalyst to produce acetic acid.
    Type: Application
    Filed: October 13, 2011
    Publication date: April 19, 2012
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: G. Paull Torrence, Raymond Zinobile, Oyeyemi Oyerinde
  • Patent number: 8137556
    Abstract: A method for producing biofuels is provided. A method of making biofuels includes dewatering substantially intact algal cells to make an algal biomass, extracting neutral lipids from the algal biomass, and esterifying the neutral lipids with a catalyst in the presence of an alcohol. The method also includes separating a water soluble fraction comprising glycerin from a water insoluble fraction comprising fuel esters and distilling the fuel esters under vacuum to obtain a C16 or shorter fuel esters fraction, a C16 or longer fuel ester fraction, and a residue comprising carotenoids and omega-3 fatty acids. The method further includes hydrogenating and deoxygenating at least one of (i) the C16 or shorter fuel esters to obtain a jet fuel blend stock and (ii) the C16 or longer fuel esters to obtain a diesel blend stock.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: March 20, 2012
    Assignee: Heliae Development, LLC
    Inventor: Aniket Kale
  • Patent number: 8137558
    Abstract: A method for producing biofuels is provided. A method of making biofuels includes dewatering substantially intact algal cells to make an algal biomass, extracting neutral lipids from the algal biomass, and esterifying the neutral lipids with a catalyst in the presence of an alcohol. The method also includes separating a water soluble fraction comprising glycerin from a water insoluble fraction comprising fuel esters and distilling the fuel esters under vacuum to obtain a C16 or shorter fuel esters fraction, a C16 or longer fuel ester fraction, and a residue comprising carotenoids and omega-3 fatty acids. The method further includes hydrogenating and deoxygenating at least one of (i) the C16 or shorter fuel esters to obtain a jet fuel blend stock and (ii) the C16 or longer fuel esters to obtain a diesel blend stock.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: March 20, 2012
    Assignee: Heliae Development, LLC
    Inventor: Aniket Kale
  • Publication number: 20110297527
    Abstract: Processes for making SA from either a clarified DAS-containing fermentation broth or a clarified MAS-containing fermentation broth that include distilling the broth under super atmospheric pressure at a temperature of >100° C. to about 300° C. to form an overhead that comprises water and ammonia, and a liquid bottoms that includes SA, and at least about 20 wt % water; cooling the bottoms to a temperature sufficient to cause the bottoms to separate into a liquid portion and a solid portion that is substantially pure SA; and separating the solid portion from the liquid portion. A method also reduces the broth distillation temperature and pressure by adding an ammonia separating and/or water azeotroping solvent to the broth.
    Type: Application
    Filed: August 19, 2011
    Publication date: December 8, 2011
    Applicant: BioAmber S.A.S.
    Inventors: Olan S. Fruchey, Brian T. Keen, Brooke A. Albin, Nye A. Clinton, Dilum Dunuwila, Bernard D. Dombek
  • Publication number: 20100314239
    Abstract: The present invention relates to a process for purifying methacrylic acid, wherein the reaction mixture obtained by a reaction of methacrylamide with water is cooled by mixing with an aqueous medium and then passed into a phase separator. The present invention further describes a system for performing the process according to the invention.
    Type: Application
    Filed: January 13, 2009
    Publication date: December 16, 2010
    Applicant: EVONIK ROEHM GMBH
    Inventors: Udo Gropp, Stefanie Sohnemann, Guido Protzmann, Thomas Mertz
  • Patent number: 7842121
    Abstract: A system and method are disclosed for providing aqueous stream purification services. The system includes at least one separation unit. Each separation unit may include a mechanical vapor recompression separator, a steam stripper, and a secondary recovery heat exchanger. The system for wastewater purification may receive water from a waste water storage, purify the water, and return the purified water to a purified water storage. The system may include a controller. The controller may include an operating conditions module configured to interpret at least one operating condition.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: November 30, 2010
    Assignee: General Electric Capital Corporation
    Inventors: Larry D. Sanderson, James W. Schleiffarth, Leslie D. Merrill, Bradford M. Rohwer
  • Patent number: 7837768
    Abstract: A system and method are disclosed for purifying a waste fluid stream. The system includes a recirculation pump having an inlet for a recirculation stream and an outlet to expel a pressurized stream. The system includes a compressor having an inlet for an evaporation stream and an outlet for a pressurized evaporation stream. A primary heat exchanger has inlets for the pressurized stream and the pressurized evaporation stream, an internal surface area for heat transfer from the evaporation stream to the pressurized stream, and outlets for a cooled product stream and a heated pressurized stream. The heated pressurized stream is formed by heating the pressurized stream and the cooled product stream is formed by cooling the evaporation stream. The system includes an evaporation unit having an inlet for the heated pressurized stream and outlets for an evaporation stream and the recycled liquid bottoms stream.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: November 23, 2010
    Assignee: General Electric Capital Corporation as Administrative Agent
    Inventors: Larry D. Sanderson, James W. Schleiffarth, Leslie D. Merrill, Bradford M. Rohwer
  • Publication number: 20100193347
    Abstract: Processes for the preparation and purification of hydrofluoroolefins such as tetrafluorinated propenes. A process is provided for separating a first hydrofluoroolefin from a second hydrofluoroolefin by a) providing a mixture comprising a first hydrofluoroolefin and a second hydrofluoroolefin, which first hydrofluoroolefin is preferentially more reactive with an amine than the second hydrofluoroolefin; b) adding a sufficient amount of an amine to the mixture to form a combination comprising the second hydrofluoroolefin and a reaction product of the first hydrofluoroolefin and the amine; and then c) separating the reaction product from the combination. This is particularly useful for removing 1,2,3,3,3-pentafluoropropene (HFO-1225ye) impurities from the hydrofluoroolefin 2,3,3,3-tetrafluoropropene (HFO-1234yf). HFO-1234yf is a refrigerant with low global warming potential.
    Type: Application
    Filed: January 29, 2010
    Publication date: August 5, 2010
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Ryan Hulse, Rajiv Ratna Singh, Ian Shankland, Michael Van Der Puy
  • Publication number: 20100122899
    Abstract: The present invention generally relates to the small-scale separation of a mixture of two or more components with different boiling points into enriched fractions. In some embodiments, a first and second fluid (e.g., a liquid and a gas, a liquid and a liquid, etc.) are passed through a channel. The first fluid may comprise at least two components, each with a unique boiling point. Upon contacting the first and second fluids within the channel, at least a portion of the most volatile of the components in the first fluid (i.e., the component with the lowest boiling point) may be transferred from the first fluid to the second fluid. In some instances, the transfer of the volatile component(s) from the first fluid to the second fluid may be expedited by heating, in some cases above the boiling point(s) of the component(s) to be transferred from the first fluid to the second fluid. Contact between the first and second fluids may be maintained, for example, via segmented flow, bubbling flow, etc.
    Type: Application
    Filed: November 13, 2009
    Publication date: May 20, 2010
    Applicant: Massachusetts Institute of Technology
    Inventors: Ryan L. Hartman, Hemantkumar R. Sahoo, Klavs F. Jensen
  • Patent number: 7708956
    Abstract: A method and an apparatus for removing sulfur hydrocarbon compounds from a naphtha stream and for simultaneously removing sulfur hydrocarbon compounds from two streams is described. A separator vessel having a top, a bottom, a primary feed inlet and a co-feed inlet is disposed vertically above the primary feed inlet. The separator vessel further includes a catalyst bed disposed between the co-feed inlet and the top. A primary feed stream comprising sulfur hydrocarbon compounds is delivered through the effluent inlet and a vaporized co-feed stream that also comprises sulfur hydrocarbon compounds is delivered through the co-feed inlet. Vaporized sulfur hydrocarbon compounds from the primary feed stream with the vaporized co-feed stream pass upwardly through the desulfurization catalyst bed. Sulfur hydrocarbon compounds from both primary feed and co-feed stream are at least partially converted to hydrogen sulfide and non-sulfur containing hydrocarbons in the catalyst bed.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: May 4, 2010
    Assignee: UOP LLC
    Inventors: Richard K. Hoehn, Giles R. Maddox, David A. Lindsay
  • Patent number: 7705193
    Abstract: The invention relates to a process for conversion of a gasoline-range hydrocarbon feed into a gasoline fraction with a higher octane rating than that of the feedstream, and a gasoil fraction with a cetane number higher than 45, including the following steps: a) a membrane separation step (B) applied to the hydrocarbon feed under conditions enabling selective separation of the majority of the linear olefins present in said feed and constituting the ? fraction, the fraction containing the majority of the branched olefins, termed the ? fraction, constituting a gasoline with a high octane rating, greater than that of the feed; b) an oligomerisation step (C) applied to the linear olefins (? fraction) contained in the effluent stream from the membrane separation step (B) under moderate oligomerisation conditions; c) a distillation separation step (D) applied to the effluent stream arising from the oligomerisation step in at least two fractions; d) a hydrogenation step (E) applied to one of the fractions obtained at
    Type: Grant
    Filed: June 6, 2005
    Date of Patent: April 27, 2010
    Assignee: Institut Francais du Petrole
    Inventors: Patrick Briot, Arnaud Baudot, Vincent Coupard, Stéphane Morin, Alain Methivier
  • Publication number: 20100036170
    Abstract: Processes and systems for purifying ethylene oxide, including introducing a feed stream including ethylene oxide to a heat exchanger to heat the feed stream, feeding the heated feed stream to a distillation apparatus base below a first stage, removing from the distillation apparatus an impurity fraction as a top exit stream from the distillation apparatus located at a top take-off on the distillation apparatus, removing from the distillation apparatus an ethylene oxide stream of 99.7 weight percent purity, based on the total weight of the ethylene oxide stream, from the distillation apparatus, and removing from the distillation apparatus an aldehyde enriched fraction as a bottom stream from the distillation apparatus, where the aldehyde enriched fraction is fed directly to a glycol reactor.
    Type: Application
    Filed: July 24, 2009
    Publication date: February 11, 2010
    Inventors: Clarence P. Stadlwieser, Bernie B. Osborne, John P. Dever, Harvey E. Andresen, Michael L. Hutchision, Gary L. Culp, Donald Culp, Stephen R. Osborne, Liping Zhang, Michael Habenschuss, Andrew Addie
  • Patent number: 7642388
    Abstract: The present invention relates to a composite for catalytic distillation, comprising a substrate material, and a modifying material and an active material, wherein said substrate material is made of porous materials, said modified material comprises at least one metal oxide, and said active material comprises an active component for a catalytic reaction. The catalytic distillation composite according to the present invention serves as both distillation packings and catalysts, and can allow catalysts to make the best of its efficiency, provide sufficient contact areas between gas and liquid phases, which facilitates mass transfer between gas and liquid phases, boosts effects in both reaction and separation and is liable for filling, removing and utilizing in industries.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: January 5, 2010
    Assignees: China Petroleum & Chemical Corporation, Sinopec Beijing Research Institute of Chemical Industry
    Inventors: Yuanyi Yang, Dongfeng Li, Wei Dai, Shuo Chen, Guoqing Wang, Lihua Liao, Jianmin Cheng, Yanlai Guo, Hui Peng
  • Patent number: 7445702
    Abstract: Propane and/or butanes are separated from a hydrocarbon feedstock contaminated with alkyl mercaptans by fractional distillation at such a pressure that the separated overheads stream containing said propane and/or butanes is at a temperature in the range 50 to 100° C. Sufficient oxygen is introduced into the hydrocarbon feedstock to oxidise the mercaptans therein and the resultant mixture is subjected to the fractional distillation in a column including at least one bed of a catalyst capable, under the prevailing conditions, of oxidising the mercaptans to higher boiling point sulphur compounds. These higher boiling point sulphur compounds are separated as part of the liquid phase from the distillation.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: November 4, 2008
    Assignee: Johnson Matthey PLC
    Inventor: Peter Edward James Abbott
  • Patent number: 7431804
    Abstract: A process is proposed for the distillation or reactive distillation of a mixture that includes at least one toxic component, the process being carried out in a column containing a structured packing, having at least one packing layer (1) having a lower end (2) and an upper end (3), the packing layer having an internal geometry varying over its height, in such a manner that in the distillation or reactive distillation, in a first, lower region (6) of the packing layer (1) a bubbling layer having a predominantly disperse gas phase can be established and simultaneously in a second, upper region (7) of the packing layer (1) a film flow having a predominantly continuous gas phase can be established.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: October 7, 2008
    Assignee: BASF Aktiengesellschaft
    Inventors: Eckhard Ströfer, Gerd Kaibel, Achim Stammer, Carsten Oost, Martin Sohn, Manfred Stroezel, Walter Dobler
  • Publication number: 20080236446
    Abstract: A toner process comprising the aggregation and coalescence of an amorphous polyester, a crystalline polyester and a colorant, and wherein the coalescence is conducted at a temperature that is about lower than the melting point temperature of the crystalline polyester.
    Type: Application
    Filed: March 29, 2007
    Publication date: October 2, 2008
    Inventors: Ke Zhou, Guerino G. Sacripante, Karen A. Moffat, Michael S. Hawkins, Paul J. Gerroir, Richard P.N. Veregin
  • Publication number: 20080223711
    Abstract: It is an object of the present invention to provide, in the case of producing an aromatic carbonate through a reactive distillation system using a continuous multi-stage distillation column from a dialkyl carbonate and an aromatic monohydroxy compound, a specific process that enables the aromatic carbonate to be produced stably for a prolonged period of time on an industrial scale of not less than 1 ton/hr, while efficiently separating out a by-produced alcohol. Although there have been various proposals regarding processes for the production of aromatic carbonates by means of a reactive distillation method, these have all been on a small scale and short operating time laboratory level, and there have been no disclosures whatsoever on a specific process or apparatus enabling mass production on an industrial scale.
    Type: Application
    Filed: September 21, 2005
    Publication date: September 18, 2008
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Shinsuke Fukuoka, Hironori Miyaji, Hiroshi Hachiya, Kazuhiko Matsuzaki
  • Patent number: 7425247
    Abstract: This invention relates to a method for producing an aqueous solution of free hydroxylamine (HA) by simultaneous countercurrent treatment of a HA salt with ammonia or ammonia water, then separating the HA by distillation and reconcentrating the aqueous HA solution in a countercurrent with a stripping medium. The stripping medium used according to the invention is a mixture of steam and a non-condensable inert gas and the process temperature at a defined pressure is controlled by the quantity of non-condensable inert gas at the column inlet. The preferred non-condensable inert gas is nitrogen. This results in increased safety and a reduction in losses of the method for producing aqueous solutions of free HA.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: September 16, 2008
    Assignee: Domo Caproleuna GmbH
    Inventors: Norbert Leetsch, Thomas Strecker, Manfred Kretschmar, Joachim Seidler
  • Patent number: 7182840
    Abstract: The invention relates to a method and a device for the optimal use of reaction heat resulting from the production of 1,2-dichloroethane from ethene and chlorine. The aim of the invention is achieved by extracting reaction heat liberated during the reaction of chlorine with ethene and the reaction heat contained in 1,2-dichloroethane. Extraction of said reaction heat from the reaction chamber occurs using at least one part of gaseous 1,2-dichloroethane (latent heat) and at least one part of liquid 1,2-dichloroethane (feelable heat) removed from the reaction chamber. Said reaction heat is used to heat two fractioning columns in order to purify 1,2-dichloroethane of impurities having a boiling point higher than 1,2-dichloroethane.
    Type: Grant
    Filed: October 28, 2000
    Date of Patent: February 27, 2007
    Assignee: UHDE GmbH
    Inventors: Michael Benje, Peter Porscha, Stefan Von Egelstein
  • Patent number: 7179388
    Abstract: Formic acid is at least partly removed from an aqueous solution comprising formic acid, cyclohexanone and cyclohexanol by decomposition over certain decomposition catalysts. The method is preferably used for processing reaction products from the oxidation of cyclohexane and comprises: (i) extracting a product gas mixture obtained in the oxidation of cyclohexane with an aqueous scrubbing liquid, (ii) separating the aqueous solution obtained in (i) by distillation into an aqueous solution comprising formic acid, cyclohexanone and cyclohexanol together with further minor organic components and a carboxylic acid mixture (iii) removing the formic acid at least partially from the aqueous solution obtained in (ii) by decomposition, and (iv) further processing the aqueous solution obtained in (iii) to give epsilon-caprolactam, or using the aqueous solution obtained in (iii) as scrubbing liquid in (i).
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: February 20, 2007
    Assignee: BASF Aktiengesellschaft
    Inventor: Thomas Nöbel
  • Patent number: 7030277
    Abstract: A process for reacting a first component with itself or a second component to produce a third component in which a first material comprising a first component or said first component and a second component is fed to divided wall column having a catalytic distillation structure in at least one of the separate vertical sections of the divided wall column where concurrently: (1) a first component alone or with a second component is contacted with a catalytic distillation structure in a distillation reaction zone thereby catalytically reacting at least a portion of the first component with itself or with the second component to form a product and (2) a first mixture comprising the first component and the product or the first component, the second component and the product; and withdrawing the product from the distillation column reactor; while within the column concurrently with the catalytic reaction and fractionation a second mixture is fractionated, which contains the first component and the product or first a
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: April 18, 2006
    Inventors: Willibrord A. Groten, Mario J. Maraschino
  • Patent number: 7014833
    Abstract: A process for reacting a first component with itself or a second component to produce a third component in which a first material comprising a first component or said first component and a second component is fed to divided wall column having a catalytic distillation structure in at least one of the separate vertical sections of the divided wall column where concurrently: (1) a first component alone or with a second component is contacted with a catalytic distillation structure in a distillation reaction zone thereby catalytically reacting at least a portion of the first component with itself or with the second component to form a product and (2) a first mixture comprising the first component and the product or the first component, the second component and the product; and withdrawing the product from the distillation column reactor; while within the column concurrently with the catalytic reaction and fractionation a second mixture is fractionated, which contains the first component and the product or first a
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: March 21, 2006
    Assignee: Catalytic Distillation Technologies
    Inventors: Willibrord A. Groten, Mario J. Maraschino
  • Patent number: 6946068
    Abstract: A process for concurrently fractionating and hydrotreating of a full range naphtha stream. The full boiling range naphtha stream, for example which is derived from fluid catalytic cracking, is first subjected to simultaneous hydrogenation of the thiophene contained therein and thioetherification and fractionation to remove the mercaptans the light fraction and then to simultaneous hydrodesulfurization and splitting of the bottoms into an intermediate boiling range naphtha and a heavy boiling range naphtha. The three boiling range naphthas are treated separately according to the amount of sulfur in each cut and the end use of each fraction.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: September 20, 2005
    Assignee: Catalytic Distillation Technologies
    Inventor: Willibrord A. Groten
  • Patent number: 6930206
    Abstract: A process for reacting a first component with itself or a second component to produce a third component in which a first material comprising a first component or said first component and a second component is fed to divided wall column having a catalytic distillation structure in at least one of the separate vertical sections of the divided wall column where concurrently: (1) a first component alone or with a second component is contacted with a catalytic distillation structure in a distillation reaction zone thereby catalytically reacting at least a portion of the first component with itself or with the second component to form a product and (2) a first mixture comprising the first component and the product or the first component, the second component and the product; and withdrawing the product from the distillation column reactor; while within the column concurrently with the catalytic reaction and fractionation a second mixture is fractionated, which contains the first component and the product or first a
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: August 16, 2005
    Assignee: Catalytic Distillation Technologies
    Inventors: Willibrord A. Groten, Mario J. Maraschino
  • Patent number: 6767517
    Abstract: An energy efficient series of mass and energy integrated reactive distillation columns and distillation columns are used to effect the production of diaryl carbonate. Utilizing the method or apparatus of the invention facilitates high diaryl carbonate production rates, and convenient recovery of unreacted starting materials and side-reaction products for recycle within the process for making diaryl carbonates or utilization in parallel reactions such as the manufacture of dialkyl carbonates. The method makes use of three reactive distillation columns and two rectification columns which are joined by a plurality of lines for transferring reactants and/or products into and out of the columns.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: July 27, 2004
    Assignee: General Electric Company
    Inventors: Philip R. de Bruin, James S. Law, Vincentius Antonius Vriens
  • Publication number: 20040024256
    Abstract: The present invention provides a process and apparatus for selectively halogenating a ketone of the formula (I) 1
    Type: Application
    Filed: July 1, 2002
    Publication date: February 5, 2004
    Inventor: Dennis E. Jackman
  • Patent number: 6583326
    Abstract: Phenol is separated from a mixture containing hydroxyacetone, cumene, water and phenol, by fractionating the mixture in a process with a fractional distillation step and a phase separation step to provide a single phenol fraction containing less than 300 ppm of hydroxyacetone. In the work-up by distillation of cleavage product mixtures, the hydroxyacetone can be removed from the cleavage product mixture together with a phenol fraction from which the hydroxyacetone has to be removed. A process can be used for purifying cleavage product mixtures obtained in the cleavage of alkylaryl hydroperoxides such as cumene hydroperoxide. The process allows separation of phenol and acetone from mixtures obtained in the cleavage of cumene hydroperoxide.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: June 24, 2003
    Assignee: Phenolchemie GmbH & Co. KG
    Inventors: Christoph Schwarz, Markus Weber, Uwe Tanger, Hermann-Josef Korte, Jochen Ullrich