Including Step Of Adding Catalyst Or Reacting Material Patents (Class 203/29)
  • Patent number: 9586895
    Abstract: A process for producing dimethyl sulfoxide, wherein said process comprises the following steps: (1) contacting hydrogen sulfide with methanol to produce a mixture containing dimethyl sulfide, and separating dimethyl sulfide from the mixture; and (2) in the presence or absence of a solvent, contacting dimethyl sulfide obtained in step (1) with at least one oxidant and a catalyst to produce a mixture containing dimethyl sulfoxide, said catalyst comprises at least one Ti—Si molecular sieve.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: March 7, 2017
    Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEC
    Inventors: Chunfeng Shi, Min Lin, Xingtian Shu, Xuhong Mu, Bin Zhu
  • Patent number: 9440209
    Abstract: A device for performing chemical reactions, in which one starting substance is in the liquid phase and one product is in the gaseous phase, is proposed, comprising a reaction zone which includes two catalytic sections, each section having a feed channel and an overflow well which simultaneously acts as the feed channel for the next section, such that liquid from each section passes into the overflow well of this section and via it enters the lower part of the next section, the device being designed to permit removal of the gaseous products of each section, bypassing the remaining sections.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: September 13, 2016
    Assignee: LIMITED COMPANY “REACTIVE RECTIFICATION TECHNOLOGY”
    Inventors: Dmitry Nikolaevich Shalupkin, Mikhail Al'bertovich Ratasep, Oleg Igorevich Parputs, Oleg Valerievich Giyazov
  • Patent number: 9266795
    Abstract: A process is presented for the purification of 1,3 butadiene. The process is for treating a butadiene stream from an oxidative dehydrogenation unit, where a butane stream is dehydrogenated, generating a butadiene rich stream. The butadiene rich stream is fractionated and passed through a butadiene recovery unit. Additional C4 compounds recovered from the fractionation bottoms stream are further processed for increasing yields of butadiene.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: February 23, 2016
    Assignee: UOP LLC
    Inventor: Steven L. Krupa
  • Patent number: 9242868
    Abstract: A process for separating monosilane from a mixture comprising monosilane and chlorosilanes comprising: a) Introducing mixture to a condenser (3) for separating lower-boiling chlorosilanes—containing monosilane from higher-boiling chlorosilanes enriched condensates; b) Collecting said higher-boiling condensates, in a condensate buffer (19) connected to the aforesaid condenser (3) by a condensate feed pipe (8); c) Sending higher-boiling chlorosilanes enriched condensates from the aforesaid condensate buffer (19) into a subcooler (21) which is installed on a reflux feed line (7) connected to the upper portion of a chlorosilane absorber (20); d) Feeding lower-boiling chlorosilanes—containing monosilane to the aforesaid chlorosilane absorber (20) for separating monosilane; e) Extracting monosilane—rich gas from the upper portion of the aforesaid chlorosilane absorber (20).
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: January 26, 2016
    Assignee: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude
    Inventors: Isao Abe, Shinji Tomita
  • Patent number: 9173931
    Abstract: Methods for the manufacture of polysaccharide-protein conjugate vaccines at high yield are provided. The methods involve reaction of a hydrazide group on one reactant with an aldehyde group on the other reactant. The reaction proceeds rapidly with a high conjugation efficiency. Simplified purification processes can be employed to separate the conjugate product from the unconjugated protein and polysaccharide and other small molecule by-products.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: November 3, 2015
    Assignees: The United States of America, as represented by the Secretary, Department of Health and Human Services, Fiocruz
    Inventors: Ellen Jessouroun, Ivna Alana Freitas Brasileiro Da Silveira, Renata Chagas Bastos, Carl E. Frasch, Che-Hung Robert Lee
  • Patent number: 9045412
    Abstract: A method and plant for obtaining acetic acid and methanol from the hydrolysis of methyl acetate by reactive distillation is disclosed. The reactive distillation column is configured as a divided wall reactive distillation column (1). A feed containing water and methyl acetate are brought into contact with a catalyst in a reactive space (19) to perform the hydrolysis of water and methyl acetate to methanol and acetic acid. The reactive space comprises at least a first rectification zone (32), a first stripping zone (34) and a first reaction zone (33). A catalyst is provided in the first reaction zone (33). The column further comprises a product space (29) with at least a second rectification zone (42) and a second stripping zone (44). The second stripping zone (44) shares at least a portion of the column sump (38) with the first stripping zone (34).
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: June 2, 2015
    Assignee: Sulzer Chemtech AG
    Inventors: Stefan Sander, Laurent Zuber
  • Publication number: 20150075969
    Abstract: Processes and systems for purifying silane-containing streams and, in particular, for purifying silane-containing streams that also contain ethylene are disclosed. The processes and systems may be arranged such that one or more ethylene reactors are downstream of light-end distillation operations.
    Type: Application
    Filed: November 20, 2014
    Publication date: March 19, 2015
    Applicant: SunEdison, Inc.
    Inventors: Baisheng Zou, Zhihui Gu
  • Publication number: 20140326593
    Abstract: A method for manufacturing high purity sulfuric acid is provided. A mixed solution subsequently undergoes a first preheating step, a second preheating step, a distilling step and an evaporating step to remove peroxide, water, oxygen and insoluble impurities, so as to obtain the first gas containing sulfur trioxide, sulfuric acid and hydrogen oxide. And then, the sulfur trioxide is absorbed by a sulfuric acid solution, thereby forming the high purity sulfuric acid.
    Type: Application
    Filed: April 30, 2014
    Publication date: November 6, 2014
    Applicant: ASIA UNION ELECTRONICAL CHEMICAL CORP.
    Inventors: Curtis Douglas DOVE, Goang-Cheng CHANG, Yuen-Ming KUNG, Hung-Wen CHAN, Wei-Hsuan HSU
  • Patent number: 8840762
    Abstract: An aromatics complex producing one or more xylene isomers offers a large number of opportunities to conserve energy by heat exchange within the complex. One previously unrecognized opportunity is through providing two parallel distillation columns operating at different pressures to separate C8 aromatics from C9+ aromatics. The parallel columns offer additional opportunities to conserve energy within the complex.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: September 23, 2014
    Assignee: UOP LLC
    Inventors: Gregory R. Werba, Jason T. Corradi, David W. Ablin
  • Publication number: 20140238841
    Abstract: A method of producing 2,3-butanediol includes subjecting a 2,3-butanediol culture liquid produced by microbial fermentation to nanofiltration membrane treatment and ion-exchange treatment (Step A), and then adding an alkaline substance and performing distillation (Step B).
    Type: Application
    Filed: October 12, 2012
    Publication date: August 28, 2014
    Applicant: Toray Industries, Inc.
    Inventors: Kenji Kawamura, Izumi Morita, Masateru Ito, Kyohei Isobe, Satoshi Sakami, Katsushige Yamada
  • Publication number: 20140228601
    Abstract: Processes for isolating 1,1,1,2,3-pentachloropropane from a crude product stream containing the 1,1,1,2,3-pentachloropropane and ferric chloride. The processes may include deep distillation of the crude, treatment of the crude with a reagent that deactivates the ferric chloride followed by distillation on the deactivated crude stream, aqueous washing of the crude product stream to remove ferric chloride followed by distillation on the deactivated crude stream. Other embodiments simultaneously prepare 1,1,2,3-tetrachloroprene and 1,1,1,2,3-pentachloroprane.
    Type: Application
    Filed: March 14, 2013
    Publication date: August 14, 2014
    Inventor: Occidental Chemical Corporation
  • Publication number: 20140183028
    Abstract: A process is proposed for the treatment of a recycling stream (1) from a plant for the production of polyarylene ether sulfones via polycondensation of aromatic bishalogen compounds and of aromatic bisphenols or their salts in the presence of at least one alkali metal carbonate or ammonium carbonate or alkali metal hydrogencarbonate or ammonium hydrogencarbonate in an N-alkyl-2-pyrrolidone as solvent, comprising from 60 to 90% by weight of water, from 10 to 40% by weight of N-alkyl-2-pyrrolidone and, as contaminant detrimental to specification, up to 5000 ppm by weight of the alkylsuccinimide corresponding to the N-alkyl-2-pyrrolidone and, alongside this, up to 1000 ppm by weight of other substances with higher boiling point than N-alkyl-2-pyrrolidone, in particular inorganic salts, based in each case on the total weight of the recycling stream (1), where the entirety of the components gives 100% by weight, giving a pure N-alkyl-2-pyrrolidone stream (2) which can be returned to the plant for the productio
    Type: Application
    Filed: December 26, 2013
    Publication date: July 3, 2014
    Applicant: BASF SE
    Inventors: Christoph Sigwart, Jutta Vonend, Cornelis Hendricus De Ruiter, Annette Kreiner, Jörg Erbes, Tobias Kortekamp
  • Publication number: 20140183029
    Abstract: A process for treating a recycling stream from a plant for the production of polyarylene ether sulfones comprising 60 to 90% water, 10 to 40% N-alkyl-2-pyrrolidone, up to 5000 ppm by weight of the alkylsuccinimide corresponding to the N-alkyl-2-pyrrolidone, up to 1000 ppm by weight of other substances with higher boiling point than N-alkyl-2-pyrrolidone, giving N-alkyl-2-pyrrolidone which can be recycled via a distillation column , preceded by preliminary purification in evaporator stage(s), giving vapor stream(s) which are introduced as feed streams into the distillation column, the bottom stream from the last evaporator stage being discharged and the bottom stream from the distillation column being recycled into the last evaporator stage, and the vapor stream from the last evaporator stage being introduced fully or partly into an additional column from which a top stream is introduced into the distillation column and a bottom stream is discharged.
    Type: Application
    Filed: December 26, 2013
    Publication date: July 3, 2014
    Applicant: BASF SE
    Inventors: Jörg Erbes, Christoph Sigwart, Tobias Kortekamp, Cornelis Hendricus De Ruiter, Jutta Vonend, Annette Kreiner, Markus Ottenbacher
  • Patent number: 8753513
    Abstract: A method of treating wastewater containing peroxide and ammonia includes performing a first stage peroxide pretreatment of the wastewater with a catalyst, and performing a second stage ammonia separation of the peroxide treated wastewater by a distillation process, thereby producing a concentrated ammonium hydroxide end product that is separated from the wastewater.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: June 17, 2014
    Assignee: International Business Machines Corporation
    Inventors: Linda N. Daubert, Randall P. Duggan, James M. MacDougall, James G. Sales
  • Patent number: 8721842
    Abstract: A catalytic reaction-rectification integrated process and a catalytic reaction-rectification integrated column, and the specialized device of such process is provided. The reactants are preheated and mixed with catalysts, and then fed into a jet agitation reaction section located in the middle of the catalytic reaction-rectification integrated column from a feeding inlet. The jet agitation reaction section is a kettle-like reactor located in the middle of the catalytic reaction-rectification integrated column. After pressurized by a centrifugal pump, the reactant materials are admitted into a subsonic or transonic agitator located within the reaction section. The reactant materials are ejected into the jet agitation reaction section at high speed, to efficiently mix the solid and liquid phases in the reaction section and to reinforce heat and mass transfer efficiency during the reaction. The liquid reaction mixture is separated and purified directly in the catalytic reaction-rectification integrated column.
    Type: Grant
    Filed: November 20, 2008
    Date of Patent: May 13, 2014
    Assignee: Nanjing University
    Inventors: Zhibing Zhang, Zheng Zhou, Youting Wu, Min Shao
  • Patent number: 8691055
    Abstract: The present disclosure relates to processes and systems for purifying technical grade trichlorosilane and/or technical grade silicon tetrachloride into electronic grade trichlorosilane and/or electronic grade silicon tetrachloride.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: April 8, 2014
    Assignee: MEMC Electronic Materials SpA
    Inventor: Gianfranco Ghetti
  • Publication number: 20140039224
    Abstract: In the process of distilling a polyol product mixture including one or both of a biobased propylene glycol and a biobased ethylene glycol from the reaction of hydrogen with a biobased feed, it has been discovered that undesirable epoxides can form, and the present invention provides means for guarding against their formation, for removing epoxides which do form by particular methods of distilling, and for removing the epoxides from a finished, otherwise commercially acceptable biobased glycol product.
    Type: Application
    Filed: February 27, 2012
    Publication date: February 6, 2014
    Applicant: Archer Daniels Midland Company
    Inventors: Kevin J. Adlaf, Paul D. Bloom, William Chris Hoffman, Chicheng Ma, John G. Soper, Brad Zenthoefer
  • Patent number: 8628642
    Abstract: A system and process that are a hybrid of distillation and membrane separations offers a highly efficient means of separating a fluid feed mixture into organic, solid, and aqueous components. The distillation section is followed by two membrane separation sections operated in parallel, with the distillation section separating the feed mixture into an organics-rich fraction and an organics-depleted and solids-rich fraction. One membrane section operates on the organics-rich fraction and separates it into a more organics-rich sub-fraction and a water-rich, organics-depleted sub-fraction, while the other membrane section operates on the organics-depleted, solids-rich fraction from the distillation section and separates it into a solids-rich sub-fraction and a solids-depleted, water-rich sub-fraction.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: January 14, 2014
    Assignees: I3 Nanotec LLC, I Cube Nanotec India (P) Ltd.
    Inventors: Manish Goel, Chetan Prakash Mittal
  • 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: 8585870
    Abstract: A process for co-manufacture of acrylonitrile and hydrogen cyanide comprises combining a stream comprising hydrogen cyanide and an acrylonitrile reactor product stream, to produce a combined product stream, having a ratio of acrylonitrile to hydrogen cyanide of about 9 to 1 or less, which can be varied; and treating the combined product stream in a recovery/purification system of acrylonitrile process wherein pH is controlled by addition of an acid to prevent HCN polymerization. The ratio of acrylonitrile to hydrogen cyanide is generally between 2 to 1 and 9 to 1. The stream comprising hydrogen cyanide is advantageously a hydrogen cyanide product stream from a hydrogen cyanide synthesis reactor.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: November 19, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Brent E. Basham, Richard Thomas Stimek
  • Patent number: 8562921
    Abstract: A process for the production of high purity ethyl acetate from ethanol is described. The process involves reacting ethanol over a suitable catalyst in a reactive distillation column. The reactive distillation setup allows overcoming the reaction equilibrium for increased conversion of ethanol. Hydrogen is removed as the distillate and ethyl acetate is obtained as a bottoms product from the reactive distillation column. A feed of hydrogen at the bottom of the column and a suitable hydrogenation catalyst placed at the bottom of the column allows for a significant reduction of impurities such as butan-2-one and/or n-butyraldehyde in the ethyl acetate product. Adding side reactors to the reactive distillation column allows additional catalyst holdup for improved reactant conversion.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: October 22, 2013
    Assignee: Greenyug, LLC.
    Inventor: Sagar B. Gadewar
  • Patent number: 8551295
    Abstract: A reactive distillation apparatus for multistage counter-current rotating bed includes a closed shell, in the center of which a revolving shaft linking each shell section is set, the shaft is provided with two or more rotors in series connection, a feeding inlet, a reflux inlet and an outlet of the gas phase are mounted on the top end face of the shell while a waste liquid outlet and an inlet of the gas phase are set on the bottom end face of the shell, a group of concentric dynamic filler rings with different diameters are installed at intervals along the radial direction, wherein the wall of the dynamic filler rings is holed, and the ring clearance between the dynamic filler rings is configured with static rings fastened on the static disc; a feeding inlet is arranged on the top cover of the shell corresponding to the spray nozzle of raw material liquid; a rotating liquid distributor is arranged on the inner side of the innermost dynamic filler ring of the said lower rotor.
    Type: Grant
    Filed: June 12, 2010
    Date of Patent: October 8, 2013
    Assignee: Beijing University of Chemical Technology
    Inventors: Jian-Feng Chen, Peng-Yuan Zhang, Guang-Wen Chu, Hai-Kui Zou, Wei Wu, Qin Shi
  • Patent number: 8551298
    Abstract: Processes and systems for purifying silane-containing streams are disclosed with relatively less silane being lost in impurity streams by use of distillation and/or condensation operations.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: October 8, 2013
    Assignee: MEMC Electronic Materials, Inc.
    Inventors: Timothy Dinh Truong, Zhihui Gu, Puneet Gupta
  • Patent number: 8545703
    Abstract: Process and steps for the production of biodiesel and/or glycerin from feedstock are provided.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: October 1, 2013
    Assignee: Menlo Energy Management, LLC
    Inventors: Gaurav Shah, Sunil Suri
  • Patent number: 8540881
    Abstract: Process and steps for the production of biodiesel and/or glycerin from feedstock are provided.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: September 24, 2013
    Assignee: Menlo Energy Management, LLC
    Inventors: Gaurav Shah, Sunil Suri
  • Patent number: 8524048
    Abstract: Processes and systems for purifying silane-containing streams are disclosed with relatively less silane being lost in impurity streams by use of distillation and/or condensation operations.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: September 3, 2013
    Assignee: MEMC Electronic Materials, Inc.
    Inventors: Zhihui Gu, Timothy D. Truong, Puneet Gupta
  • Patent number: 8506766
    Abstract: A method for recovering acetic acid from an aqueous feed stream containing acetic acid and, in particular, a stream generated during terephthalic acid production includes feeding a water-rich feed stream to a liquid-liquid extraction column, which includes a guard bed near the top thereof for conversion of alcohol within the feed stream by reaction with acetic acid to the corresponding ester, and removing residual water from acetic acid in an azeotropic distillation column by feeding water-poor feed streams from the extraction column to the distillation column at a height at which the mixture has a similar water concentration. The liquid-liquid extraction column produces an extract of an extraction solvent and acetic acid which is sent to the azeotropic distillation column to separate residual water and acetic acid.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: August 13, 2013
    Assignee: AMT International Inc.
    Inventors: Kuang-Yeu Wu, Ji-Young Jang, Karl Tze-Tang Chuang
  • Publication number: 20130184497
    Abstract: The present invention provides a method for producing ditrimethylolpropane which is characterized by the following (1) and (2): (1) a distillation still residue separated from purified trimethylolpropane is subjected to re-distillation under specific conditions to obtain a ditrimethylolpropane-containing solution having given contents of bis-TMP and tri-TMP; and (2) when subjecting the ditrimethylolpropane-containing solution to crystallization with an organic solvent, the crystallization is initiated under pressure at a temperature exceeding a boiling point of the organic solvent as measured under normal pressures, and the resulting crystallization product solution is cooled at a temperature drop rate of 2° C./min or less. According to the above method, it is possible to produce a high-purity ditrimethylolpropane from a distillation still residue obtained upon production of trimethylolpropane in a simple, industrially useful manner.
    Type: Application
    Filed: September 5, 2011
    Publication date: July 18, 2013
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Masami Matsumoto, Hiroaki Shigeta, Nozomi Nakagawa, Ikutaro Kuzuhara
  • Publication number: 20130153401
    Abstract: A process for purifying a brine of organic compounds comprising: (a) supplying a brine that comprises at least one organic compound; (b) feeding at least one stripping zone with the brine from (a) and at least one stripping agent; (c) withdrawing from the stripping zone at least one fraction (I) consisting essentially of brine, the content of the organic compound being lower in fraction (I) than in the brine from step (a), and at least one fraction (II) consisting essentially of the stripping agent; wherein the temperature (T1) of the hotter fraction of the two fractions (I) and (II) and the temperature (T2) of the colder fraction of the two fractions (I) and (II), such temperatures expressed in degrees Celsius being the temperatures measured before any possible thermal conditioning which might be carried out before and/or during their withdrawal from the stripping zone, correspond to the following formula: 6×10?7(T1)3.
    Type: Application
    Filed: August 22, 2011
    Publication date: June 20, 2013
    Applicant: SOLVAY SA
    Inventors: Patrick Gilbeau, Philippe Krafft, Jerome Ligot, Valentine Smets, Giancarlo Iavarone
  • Publication number: 20130035522
    Abstract: A process for reducing ethyl acetate and/or diethyl acetal concentration of a crude ethanol product by hydrolysis is disclosed. A portion of the water is initially separated from the crude ethanol product in a first column residue. Ethyl acetate in the first column distillate is hydrolyzed to form additional ethanol and acetic acid. Product ethanol is recovered in a second distillation column preferably in a side stream and acetic acid is removed in the second column residue.
    Type: Application
    Filed: August 3, 2011
    Publication date: February 7, 2013
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: Adam Orosco, Manuel Salado, Lincoln Sarager, R. Jay Warner, Trinity Horton
  • Publication number: 20130001064
    Abstract: A method of upgrading heavy oil in which the heavy oil is preheated to above a boiling point of water to remove water as steam and lighter fractions as vapours. The heavy oil passes downwardly through a series of sequential horizontal heat gradients in a temperature gradient reactor. A temperature of each sequential heat gradient progressively increases so that lighter fractions of the heavy oil vaporize with minimal cracking and heavier heavy oil fractions continue to fall by force of gravity downwards. As they pass through further sequential heat gradients of progressively increasing temperature, they tend to crack into lighter fractions in the presence of nascent hydrogen. Coke, formed from heavier heavy oil fractions generated and deposited on a fluidized catalytic bed a bottom of the temperature gradient reactor, is fluidized with superheated steam.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 3, 2013
    Inventors: Jose Lourenco, MacKenzie Millar
  • Publication number: 20120279848
    Abstract: One exemplary embodiment can be an alkylation unit. The alkylation unit can include at least one alkylation reaction zone having an alkylation catalyst, at least one cooler communicating with the at least one alkylation reaction zone, a settler communicating with the at least one alkylation reaction zone and the at least one cooler, a fractionation zone receiving an effluent from the settler passing through a line, and a boot coupled to a substantially horizontal portion of the line. Generally, the boot receives an effluent portion rich in the alkylation catalyst.
    Type: Application
    Filed: July 16, 2012
    Publication date: November 8, 2012
    Applicant: UOP LLC
    Inventors: Mark A. Clark, Jason J. Gislason
  • Patent number: 8293075
    Abstract: Processes for the continuous fractional distillation of a mixture containing morpholine (MO), monoaminodiglycol (ADG), ammonia and water from a reaction of diethylene glycol (DEG) with ammonia, the process including: (i) separating off ammonia from the mixture at a top of a first distillation column K10; (ii) feeding a bottom fraction from K10 to a second distillation column K20, in which water and an organic product are separated off at the top at a temperature at the top in the range from 45 to 198° C. and a pressure in the range from 0.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: October 23, 2012
    Assignee: BASF SE
    Inventors: Helmut Schmidtke, Oliver Buβmann, Ralph Versch, Udo Rheude, Uwe Leyk, Manfred Julius, Martin Rudloff, Erhard Henkes
  • Patent number: 8282792
    Abstract: The present disclosure relates to processes and systems for purifying technical grade trichlorosilane and/or technical grade silicon tetrachloride into electronic grade trichlorosilane and/or electronic grade silicon tetrachloride.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: October 9, 2012
    Assignee: MEMC Electronic Materials S.p.A.
    Inventor: Gianfranco Ghetti
  • Patent number: 8236172
    Abstract: A process for reducing the sulfur content of a hydrocarbon stream, including: feeding hydrogen and a hydrocarbon stream including sulfur compounds to a catalytic distillation reactor having one or more hydrodesulfurization reaction zones; concurrently in the catalytic distillation reactor: fractionating the hydrocarbon stream into a heavy fraction and a light fraction; contacting hydrogen and the light fraction to form H2S and a light fraction of reduced sulfur content; recovering the light fraction, H2S, and hydrogen as an overheads; recovering the heavy fraction; heating the overheads to a temperature from 500 to 700° F.; feeding the heated overheads and hydrogen to a high temperature low pressure reactor to form H2S and a reactor effluent of reduced mercaptan content; separating the reactor effluent, H2S, and unreacted hydrogen to form a light hydrocarbon fraction and a fraction including H2S and hydrogen; recycling a portion of the light hydrocarbon fraction to the catalytic distillation reactor.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: August 7, 2012
    Assignee: Catalytic Distillation Technologies
    Inventors: Gary G. Podrebarac, Raymond Chafin
  • Patent number: 8110073
    Abstract: Aromatic amines are produced by catalytic hydrogenation of aromatic nitro compounds. The reaction mixture generated by this hydrogenation is then worked up by distillation in a manner which makes it possible to substantially free the amine of water with increased energy efficiency. Water free of amine and low boilers and the low boiling materials are also obtained.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: February 7, 2012
    Assignee: Bayer MaterialScience AG
    Inventors: Bernd Pennemann, Bill Brady, Rainer Buse
  • Publication number: 20120024689
    Abstract: Processes for the continuous fractional distillation of a mixture comprising morpholine (MO), monoaminodiglycol (ADG), ammonia and water from a reaction of diethylene glycol (DEG) with ammonia, the process comprising: (i) separating off ammonia from the mixture at a top of a first distillation column K10; (ii) feeding a bottom fraction from the first distillation column to a second distillation column K20, wherein water and an organic product are separated off at a top of the second distillation column at a top temperature of 45 to 198° C. and a pressure in the range from 0.1 to 15 bar; (iii) feeding a bottom fraction from the second distillation column to a third distillation column K30, wherein morpholine and an organic product having a boiling point of <140° C. (1.013 bar) are separated off at a point selected from a top and a side offtake of the third distillation column, and monoaminodiglycol and an organic product having a boiling point of >190° C. (1.
    Type: Application
    Filed: September 12, 2007
    Publication date: February 2, 2012
    Applicant: BASF SE
    Inventors: Helmut Schmidtke, Oliver Bußmann, Ralph Versch, Udo Rheude, Uwe Leyk, Manfred Julius, Martin Rudloff, Erhard Henkes
  • Patent number: 8105564
    Abstract: Provided is a plant for the continuous production of monosilane and tetrachlorosilane by catalytic dismutation of trichlorosilane, wherein the plant contains: a countercurrent reactor having a double wall, a catalyst bed containing a catalyst which is located in the countercurrent reactor, a condenser at the top of the countercurrent reactor, a vaporizer unit at the bottom of the countercurrent reactor, a trichlorosilane feed line for the introduction of trichlorosilane into the countercurrent reactor, a heat exchanger, with the trichlorosilane conveyed by line via the heat exchanger and preheated there by a bottom product from the vaporizer unit and, for this purpose, the bottom product is fed by line via the heat exchanger into the double wall at a level in the lower part of the countercurrent reactor and discharged from the double wall at a level in the upper part of the countercurrent reactor, a condensation unit downstream of the condenser, and a distillation column having an outlet for monosilane.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: January 31, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Raymund Sonnenschein, Peter Adler, Yuriy Kasatkin, Adolf Petrik, Leonid Schwarzmann
  • Patent number: 8083903
    Abstract: An azeotropic distillation method, comprising a reaction step, a distillation step for separating and refining a reaction product, and a recovery step for collecting a reactant after the distillation step; wherein at least one component constituting the reactant in the reaction step can act as an entrainer for the azeotropic distillation in the distillation step; and a portion of the reactant capable of acting as the entrainer is supplied to the distillation step.
    Type: Grant
    Filed: February 1, 2007
    Date of Patent: December 27, 2011
    Assignee: Showa Denko K.K.
    Inventors: Hiroshi Maruta, Chihiro Otogawa
  • Publication number: 20110297528
    Abstract: The invention disclosed is an apparatus and method for the recovery of acetic acid, azeotropic agent, extraction agent, re-usable water and other reaction products such as p-toluic acid, from an aqueous stream generated during a terephthalic acid production process, having superior energy efficiency and reduced water consumption.
    Type: Application
    Filed: June 7, 2010
    Publication date: December 8, 2011
    Inventors: Ji-Young Jang, Kuang-Yeu Wu, Ming-Mou Yang
  • Patent number: 8062482
    Abstract: A method for removing acetaldehyde from a mixture of methyl acetate, methanol and acetaldehyde includes: (a) feeding the mixture of methyl acetate, methanol and acetaldehyde to a distillation column; (b) distilling the feed mixture of methyl acetate methanol and acetaldehyde at a pressure of 10 psig or more to generate an overhead vapor stream enriched in acetaldehyde as compared with the feed mixture and a residue stream depleted in acetaldehyde as compared with the feed mixture; and (c) withdrawing the residue stream depleted in acetaldehyde from the distillation column.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: November 22, 2011
    Assignee: Celanese International Corporation
    Inventor: R. Jay Warner
  • 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
  • Publication number: 20110257444
    Abstract: Disclosed herein are azeotrope and near-azeotrope compositions comprising E-1,1,1,2,3-pentafluoropropene (E-HFC-1225ye) and hydrogen fluoride. The azeotrope and near-azeotrope compositions are useful in processes to produce and in processes to purify E-HFC-1225ye and/or Z-1,1,1,2,3-pentafluoropropene (Z-HFC-1225ye). Also disclosed are processes for the extractive distillation to separate E-HFC-1225ye from Z-HFC-1225ye.
    Type: Application
    Filed: June 28, 2011
    Publication date: October 20, 2011
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: JEFFREY P. KNAPP, Barry Asher Mahler, Velliyur Nott Mallikarjuna Rao
  • Patent number: 8038961
    Abstract: Provided is an apparatus for preparing silanes of the general formula HnSiCU n where n=1, 2, 3 and/or 4 by dismutation of a chlorinated silane in the presence of a catalyst, wherein the apparatus includes: a distillation column having a column bottom, a column top, at least one feed inlet, a plurality of product offtakes, and a chimney tray; and a side reactor containing a catalyst bed having an upper edge, the side reactor being connected to the distillation column via at least three pipes including a first pipe, a second pipe, and a third pipe.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: October 18, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Raymund Sonnenschein, Peter Adler, Tim Pöpken, John Kahsnitz
  • Patent number: 8007677
    Abstract: Disclosed herein are azeotrope and near-azeotrope compositions comprising E-1,1,1,2,3-pentafluoropropene (E-HFC-1225ye) and hydrogen fluoride. The azeotrope and near-azeotrope compositions are useful in processes to produce and in processes to purify E-HFC-1225ye and/or Z-1,1,1,2,3-pentafluoropropene (Z-HFC-1225ye). Also disclosed are processes for the extractive distillation to separate E-HFC-1225ye from Z-HFC-1225ye.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: August 30, 2011
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Jeffrey P. Knapp, Barry Asher Mahler, Velliyur Nott Mallikarjuna Rao
  • Patent number: 7985323
    Abstract: Purification process for the preparation of the allylamine pharmaceutical terbinafine of formula I in free base form or acid addition salt form, by distilling crude terbinafine base, preferably by short path distillation, e.g. at a temperature above 100° C. and reduced pressure, e.g. 0.2 mbar, and recovering the purified product in free base or acid addition salt form.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: July 26, 2011
    Assignee: Novartis AG
    Inventors: Ulrich Beutler, Gerhard Penn
  • Patent number: 7976818
    Abstract: A method for continuously recovering titanium tetrachloride TiCl4 from a waste liquid comprising TiCl4 and by-products, wherein said waste liquid is subjected, as a flowing liquid film, to an evaporation step for a residence time of less than 15 minutes at a temperature higher than 90° C.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: July 12, 2011
    Assignee: Basell Poliolefine Italia s.r.l.
    Inventors: Paolo Vincenzi, Rosa Spoto, Matteo Badalocchi
  • Patent number: 7959766
    Abstract: Process for recovering cyclododecatriene (CDT) from a solution containing CDT and high boilers such as deactivated catalyst and polymers, which includes feeding the solution into a preheater and heating it, subsequently depressurizing it through a downstream pressure maintenance device and feeding the resulting two-phase mixture into a helical tube evaporator and there reducing the CDT content of the liquid phase by partial evaporation and discharging a gaseous product stream having an increased concentration of CDT.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: June 14, 2011
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Rumpf, Ortmund Lang, Andrea Haunert, Thomas Genger, Anton Meier
  • Patent number: 7879198
    Abstract: The present disclosure relates to processes and systems for purifying technical grade trichlorosilane and/or technical grade silicon tetrachloride into electronic grade trichlorosilane and/or electronic grade silicon tetrachloride.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: February 1, 2011
    Assignee: MEMC Electronic Materials, Inc.
    Inventor: Gianfranco Ghetti
  • Patent number: 7862783
    Abstract: A separation system for a methyl acetate hydrolysis is provided. The separation system comprises a reactive distillation system, a reflux system, a first separation system and a second separation. The reactive distillation system allows the hydrolysis of a methyl acetate solution to generate a first mixture and a second mixture. The reflux system is packed with a heterogeneous catalyst and coupled to the reactive distillation system, which refluxes the first mixture to the reactive distillation system. The first separation system is coupled to the reactive distillation system, which directs the second mixture thereinto so as to isolate an acetic acid and a third mixture therefrom. The second separation system is coupled to the first separation system, which directs the third mixture thereintio so as to separate a methanol therefrom. The methyl acetate feeding system is coupled to, one of the reactive distillation system and the reflux system, which feeds the methyl acetate solution thereinto.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: January 4, 2011
    Assignee: National Taiwan University
    Inventors: Hsiao-Ping Huang, Cheng-Ching Yu, Ming-Jer Lee, Yu-De Lin, Jian-Kai Cheng