Oxyhalogenation Patents (Class 570/203)
  • Patent number: 8648223
    Abstract: A method of the present invention, for producing an iodizing agent, includes the step of electrolyzing iodine molecules in a solution by using an acid as a supporting electrolyte. This realizes (i) a method of producing an iodine cation suitable for use as an iodizing agent that does not require a sophisticated separation operation after iodizing reaction is completed, and (ii) an electrolyte used in the method. Further, a method of the present invention, for producing an aromatic iodine compound, includes the step of causing an iodizing agent, and an aromatic compound whose nucleus has one or more substituent groups and two or more hydrogen atoms, to react with each other under the presence of a certain ether compound. This realizes such a method of producing an aromatic iodine compound that position selectivity in iodizing reaction of an aromatic compound is improved.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: February 11, 2014
    Assignees: Japan Science and Technology Agency, Nippoh Chemicals Co., Ltd.
    Inventors: Junichi Yoshida, Seiji Suga, Kazuhide Kataoka, Koji Midorikawa, Yuji Hagiwara
  • Patent number: 8614362
    Abstract: The present invention relates to a process for preparing iodinated aromatic compounds. Particularly, the present invention comprises the step of performing the iodination of a non-halogenated aromatic compound, a monoiodo aromatic compound, a diiodo aromatic compound, and iodine in the presence of a zeolite catalyst under oxygen atmosphere. In the process for preparing iodinated aromatic compounds according to the present invention, an iodination and an iodine conversion simultaneously occur, and then prevent side-reactions. Also, the lifetime of an iodination catalyst used therein can be extended by controlling the reaction temperature stably. Therefore, the process can be used for mass production of diiodo compound.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: December 24, 2013
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Joong-ki Lee, Han-Seok Kim, Jae-Bong Lim, Il-Hoon Cha
  • Patent number: 8216960
    Abstract: Catalyst for the fixed bed oxychlorination of ethylene to 1,2-dichloroethane in form of hollow cylindrical granules having total pore volume from 0.4 to 0.55 ml/g prevailingly formed of micro and mesopores having diameter between 7 and 50 nm, wherein the mesopores constitute the major component, and the macropores having diameter of more than 50 nm up to 10,000 nm being present by 15-35%.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: July 10, 2012
    Assignee: Sued-Chemie Catalysts Italia S.R.L.
    Inventors: Carlo Orsenigo, Francesco Casagrande, Marco Civati
  • Patent number: 8084654
    Abstract: Disclosed is a method for preparing an iodinated aromatic compound. More specifically, disclosed is a method of preparing an iodinated aromatic compound by iodinating an aromatic compound in the presence of oxygen over a zeolite catalyst, in which the aromatic compound and its monoiodo compound, as raw materials, are allowed to react with iodine. In comparison with a method in which only the aromatic compound is used as a raw material without adding the monoiodo compound, the disclosed method can increase the productivity of diiodo compounds and the selectivity to a p-diiodo compound and, at the same time, suppress side reactions, thus lengthening the life span of the catalyst.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: December 27, 2011
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Han Seok Kim, Jong In Lee, Il Hoon Cha, Yoon Seo Lee
  • Patent number: 7750182
    Abstract: Provided is a production method for an iodine compound in which iodine is reacted with a substrate in the presence of a porous material having a pore diameter of 500 nm or less or in the presence of the above porous material and an oxidizing agent and a production process for high purity 5-iodo-2-methylbenzoic acid comprising an iodination reaction step carried out by the above-mentioned, a crystal precipitation and separation step in which a product is precipitated by adding water or cooling and then separated and a purification step in which crystal separated is recrystallized using an organic solvent. According to the production method for an iodine compound described above, iodine can be introduced into various substrates at a high selectivity. Since expensive metals and specific reagents do not have to be used, it can readily be carried out in an industrially scale, and the product having a high purity can be obtained.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: July 6, 2010
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Toshio Hidaka, Takafumi Yoshimura, Yoshifumi Sato, Norio Fushimi, Masaharu Doya
  • Publication number: 20080227984
    Abstract: This invention relates to the selective oxidation of organic compounds. According to the invention organic compounds are selectively oxidized using a peracid or a source of peracid, a transition metal based heterogeneous catalysts and a borate or boric acid in the presence of water. Using the process of the present invention, both excellent conversion and product selectivity maybe obtained.
    Type: Application
    Filed: October 21, 2005
    Publication date: September 18, 2008
    Applicant: U.S. Borax, Inc.
    Inventors: Michael John Greenhill-Hooper, Robert Raja, John Meurig-Thomas
  • Patent number: 7126035
    Abstract: The present invention relates to a catalyst composition for the oxychlorination of ethylene, comprising a mixture of metal salts on a support, where said metal salts are applied to the support in such ratios that the catalyst composition comprises a) from 3 to 12% by weight of copper as copper salt, b) from 0 to 3% by weight of an alkaline earth metal as alkaline earth metal salt, c) from 0 to 3% by weight of an alkaline metal as alkaline metal salt, d) from 0.001 to 0.1% by weight, preferably from 0.005 to 0.05% by weight, of at least one metal selected from the group consisting of ruthenium, rhodium, palladium, osmium, iridium and platinum, and/or from 0.0001 to 0.1% by weight, preferably from 0.001 to 0.05% by weight, of gold, as corresponding metal salt or tetrachloroauric acid, where all percentages by weight are based on the total weight of the catalyst including support material.
    Type: Grant
    Filed: February 4, 2003
    Date of Patent: October 24, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Kuhrs, Ruprecht Meissner
  • Patent number: 7084317
    Abstract: A process for the halogenation of an aromatic compound wherein the aromatic compound is admixed with a halogenating agent in the presence of an ionic liquid is described. The method in preferably halide, sulfur or nitrate ionic liquids has significant advantages over conventional halogenation reactions. These are that the reaction starts with, e.g., a halide salt rather than, e.g., a halogen, and is therefore more convenient and safer. Also, when the reaction is performed in a nitrate ionic liquid, the only by-product is water.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: August 1, 2006
    Assignee: The Queen's University of Belfast
    Inventors: Martyn John Earle, Suhas Prabhakar Katdare
  • Publication number: 20040073073
    Abstract: A process and an apparatus are described for the preparation of 1,2-dichloroethane by reacting ethene with hydrogen chloride and an oxygen-containing gas in an oxychlorination reactor by means of a fluidised bed with formation of a reaction gas, wherein the reactor gas is filtered outside the oxychlorination reactor by means of at least one filter candle.
    Type: Application
    Filed: November 21, 2003
    Publication date: April 15, 2004
    Inventors: Peter Kammerhofer, Ingolf Mielke, Horst Ertl, Guenter Staib
  • Publication number: 20030176748
    Abstract: A process is described for the preparation of 1,2-dichloroethane by reacting ethene with hydrogen chloride and an oxygen-containing gas in an oxychlorination reactor with formation of a reaction gas, wherein the reaction gas is, after filtration, condensed without prior quenching.
    Type: Application
    Filed: February 14, 2003
    Publication date: September 18, 2003
    Inventors: Peter Kammerhofer, Ingolf Mielke, Horst Ertl, Dieter Jaculi, Manfred Stoeger
  • Publication number: 20030055301
    Abstract: A process for the preparation of 1,2-dichloroethane that is very pure with respect to chloral or/and chloral hydrate and carbon dioxide is described herein. The process comprises oxychlorination of ethylene, using hydrogen chloride and an oxygen-containing gas, and alkali treatment of the 1,2-dichloroethane produced. In the process, the carbon dioxide present in the 1,2-dichloroethane-containing organic phase is, in accordance with the invention, substantially separated out from the 1,2-dichloroethane-containing organic phase before the alkali treatment.
    Type: Application
    Filed: October 25, 2002
    Publication date: March 20, 2003
    Inventors: Helmut Grumann, Manfred Stoger, Jurgen Eichler, Dieter Jaculi, Winfried Lork, Arend Greve, Jan Wilkens, Peter Kammerhofer, Hermann Tropp
  • Patent number: 6362384
    Abstract: A process for the preparation of 1,2-dichloroethane by oxychlorination of ethene in the presence of a copper-containing fixed-bed catalyst comprising a bed essentially consisting of catalyst particles which comprise, at least partially, support material impregnated with an active component and, if desired, a promoter, where the catalyst bed comprises essentially no separate inert material for dilution.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: March 26, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Ruprecht Meissner, Michael Hesse, Christian Walsdorff
  • Patent number: 6313337
    Abstract: A method of making a benzoyl halide is disclosed. Into a reactor is placed a reaction mixture of a benzotrihalide and a benzaldehyde having the respective general formulas where each A is independently selected from halogen, CF3, R, or OR, each B is independently selected from halogen, CF3, or R, R is alkyl from C1 to C10 or aryl from C6 to C12, each X is independently selected from Cl and Br, m is 0 to 3, and n is 0 to 2. Also added is at least about 10 ppm of a catalyst selected from the group consisting of zinc salts and copper salts, and an optional solvent. The addition of an ammonium halide to the product mixture forms the corresponding amide, which can be dehydrated to form the corresponding nitrile.
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: November 6, 2001
    Assignee: Occidental Chemical Corporation
    Inventors: Dean R. Lagerwall, Daniel R. Thielen, Pravin M. Khandare, Mark F. Lechner
  • Patent number: 6307105
    Abstract: A process for providing an &agr;-fluorinated-&bgr;-dicarbonyl includes electrophilically fluorinating a &bgr;-dicarbonyl with bis-fluoroxydifluoromethane in the presence of an acid to provide the &agr;-monofluorinated-&bgr;-dicarbonyl. The acid is preferably hydrofluoric acid. Preferred &bgr;-dicarbonyls include methyl-3-oxopentanoate and ethyl-4,4,4-trifluoroacetoacetate. The process can limit radical impurity byproducts to no more than 4% in some cases, and less than 0.5% in other cases. Theoretical yields of 95% &agr;-monofluorinated-&bgr;-dicarbonyl are possible in some cases.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: October 23, 2001
    Assignee: Air Products and Chemicals, Inc.
    Inventors: William Jack Casteel, Jr., Robert George Syvret, Wade Hampton Bailey, III
  • Patent number: 5663413
    Abstract: The invention relates to novel contrast media particularly useful for X-ray diagnostic investigations of human and animal body.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: September 2, 1997
    Assignee: Dibra S.p.A.
    Inventors: Fulvio Uggeri, Pier Lucio Anelli, Marino Brocchetta, Massimo Visigalli
  • Patent number: 5334789
    Abstract: Disclosed are an oxychlorination catalyst comprising a carrier material, and a palladium compound, a copper compound and a vanadium compound which are supported on the carrier material; an oxychlorination catalyst comprising a carrier material, and a palladium compound, a copper compound, a vanadium compound and an alkaline earth metal compound which are supported on the carrier material; processes for preparing these catalysts; and a method for oxychlorination of an olefin or an aromatic hydrocarbon using one of these catalysts.
    Type: Grant
    Filed: June 30, 1993
    Date of Patent: August 2, 1994
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Masashi Komatsu, Michio Yamamoto, Masaru Ishino, Gohfu Suzukamo
  • Patent number: 5243111
    Abstract: Hydrocarbons, e.g., ethylene, are steady-state catalytically oxychlorinated into chlorocarbons, e.g., 1,2-dichloroethane, by fluidizing a fluidizable charge by directing a gaseous feedstream containing a hydrocarbon therethrough and therein oxychlorinating such hydrocarbon, the gaseous feedstream further comprising an oxygen-containing gas and gaseous hydrochloric acid and the fluidizable charge comprising immixture of a catalytically effective amount of an oxychlorination catalyst and particles of a catalytically and chemically inert solid substance, and which further comprises introducing a solution or suspension of a catalytically active copper compound into such fluidized charge during the oxychlorination reaction.
    Type: Grant
    Filed: December 14, 1992
    Date of Patent: September 7, 1993
    Assignee: Atochem
    Inventors: Alain Petit, Roland Bachelard, Rene Clair, Yves Correia
  • Patent number: 5157174
    Abstract: Hydrocarbons are oxychlorinated by reaction with gaseous HCl and an oxygen-containing gas, in the presence of a catalytically effective amount of a ternary copper/molybdenum chalcogenide having the formula:Cu.sub.x Mo.sub.6 Ch.sub.8wherein x is a number ranging up to 4 and Ch is sulfur, selenium or tellurium, advantageously, in the added presence of a known oxychlorination catalyst and, optionally, a proportion of inert particulate solids; the ternary molybdenum chalcogenides of the formula M.sub.x Mo.sub.6 S.sub.8 are also prepared, wherein M is a metal, advantageously by the hydrogen gas reduction of intimate admixture of MoS.sub.2 and metal M, or precursors thereof.
    Type: Grant
    Filed: October 2, 1991
    Date of Patent: October 20, 1992
    Assignee: Atochem
    Inventors: Murielle Rabiller-Baudry, Annick Faure, Jean Lesparre, Marcel Sergent, Roger Chevrel
  • Patent number: 5138108
    Abstract: Disclosed is a process for regeneration of a 13X zeolite catalyst comprising conducting the following steps within the regeneration zone wherein the 13X zeolite is located.(1) Applying vacuum or delivering a source of molecular oxygen or inert gas at a temperature above 100.degree. C. to remove a portion of the volatile compounds from the 13X zeolite,(2) Cooling the 13X zeolite to a temperature below 100 degrees C.,(3) Contacting the 13X zeolite with an aqueous solution having a pH in the range of 7 to 14,(4) Drying the 13X zeolite,(5) Delivering an oxygen containing calcination gas to the regeneration zone and heating the 13X zeolite to a temperature in the range of 350.degree. to 450.degree. C.,(6) Cooling the 13X zeolite to a temperature below 100 degrees C., and(7) Contacting the 13X zeolite with an aqueous solution having a pH in the range of 7 to 14.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: August 11, 1992
    Assignee: Eastman Kodak Company
    Inventors: Gerald C. Tustin, Joseph F. Jeter, Richard I. Garrity
  • Patent number: 5082982
    Abstract: Disclosed is a process for preparation of a stream which is both selectively high in 2,6-diiodonaphthalene and also contains substantial quantities of diiodonaphthalene. First, naphthalene is oxyiodinated in the presence of a zeolite catalyst to produce a stream which is selectively high in 2-monoiodonaphthalene and the 2-monoiodonaphthalene is separated from the stream to produce a stream which is both selectively high in 2-monoiodonaphthalene and contains substantial quantities of 2-monoiodonaphthalene. Second, this stream is then oxyiodinated in the presence of a zeolite catalyst to produce a stream which is selectively high in 2,6-diiodonaphthalene and then 2,6-diiodonaphthalene is separated from the stream to produce the stream which is both selectively high in 2,6-diiodonaphthalene and contains substantial quantities of 2,6-diiodonaphthalene.
    Type: Grant
    Filed: November 2, 1990
    Date of Patent: January 21, 1992
    Assignee: Eastman Kodak Company
    Inventors: Thomas L. Yount, George G. Mayfield, Victor H. Agreda
  • Patent number: 4895992
    Abstract: A process for iodinating aromatic compounds by reacting an aromatic compound with oxygen at low temperatures in the presence of a non-acid catalyst containing an oxidation catalyst. The catalyst may be regenerated by heating the catalyst in the presence of oxygen.
    Type: Grant
    Filed: September 19, 1988
    Date of Patent: January 23, 1990
    Assignee: Eastman Kodak Company
    Inventors: Mark Rule, Gerald C. Tustin, Donald L. Carver, Jerry S. Fauver
  • Patent number: 4822929
    Abstract: The invention concerns a process for the catalytic trans-halogenation of a poly-iodo-benzene, wherein said poly-iodo-benzene is made to react with benzene and with oxygen, in the presence of a zeolite of the PENTASIL type, exchanged with a metal of the II, III or IV group of the periodical system and anyway present in forms different from the acidic form.
    Type: Grant
    Filed: August 5, 1987
    Date of Patent: April 18, 1989
    Assignee: Montedipe S.p.A.
    Inventor: Giuseppe Paparatto
  • Patent number: 4814525
    Abstract: The process relates to a process for the vapor phase bromination of aromatic compounds in the presence of oxygen and a catalyst comprising an oxidizing metal and an inert support.
    Type: Grant
    Filed: March 25, 1987
    Date of Patent: March 21, 1989
    Assignee: Eastman Kodak Company
    Inventors: Mark Rule, Donald W. Lane, Gerald C. Tustin
  • Patent number: 4810826
    Abstract: A process for the liquid-phase oxyiodination of naphthalene which comprises (1) preparing a liquid-phase feed mixture of iodine and naphthalene and/or iodine, naphthalene and iodonaphthalenes, and (2) contacting the feed mixture with a zeolite catalyst in the presence of a gaseous source of oxygen to produce an iodinated naphthalene mixture and water, and (3) removing water from the iodinated naphthalene mixture.
    Type: Grant
    Filed: March 17, 1988
    Date of Patent: March 7, 1989
    Assignee: Eastman Kodak Company
    Inventors: Steven L. Cook, George G. Mayfield
  • Patent number: 4808759
    Abstract: The invention concerns a process for the catalytic trans-halogenation of a poly-iodo-benzene, wherein said poly-iodo-benzene is made to react with benzene and with oxygen, in the presence of a zeolite of the X type or of the Y type, exchanged with an alkali metal, with thallium or with a rare earth and anyway present in a form different from the acidic form.
    Type: Grant
    Filed: August 5, 1987
    Date of Patent: February 28, 1989
    Assignee: Montedipe S.p.A.
    Inventor: Giuseppe Paparatto
  • Patent number: 4806697
    Abstract: The invention relates to a process for isomerizing iodoaromatic compounds over a non-acidic zeolite catalyst in the liquid or gas phase in the presence of a source of iodine.
    Type: Grant
    Filed: March 25, 1987
    Date of Patent: February 21, 1989
    Assignee: Eastman Kodak Company
    Inventors: Mark Rule, Gerald C. Tustin
  • Patent number: 4806698
    Abstract: The invention relates to a process for isomerizing liquid iodoaromatic compounds over an acid catalyst.
    Type: Grant
    Filed: March 25, 1987
    Date of Patent: February 21, 1989
    Assignee: Eastman Kodak Company
    Inventors: Mark Rule, Gerald C. Tustin
  • Patent number: 4795737
    Abstract: Disclosed is a process for iodinating aromatic compounds by reacting an aromatic compound with oxygen in the presence of a catalyst containing alkaline or alkaline earth cations.
    Type: Grant
    Filed: March 25, 1987
    Date of Patent: January 3, 1989
    Assignee: Eastman Kodak Company
    Inventors: Mark Rule, Gerald C. Tustin
  • Patent number: 4792642
    Abstract: Disclosed is a process for iodinating aromatic compounds by reacting an aromatic compound with oxygen at low temperatures in the presence of a non-acid catalyst containing an oxidation catalyst.
    Type: Grant
    Filed: March 25, 1987
    Date of Patent: December 20, 1988
    Assignee: Eastman Kodak Company
    Inventors: Mark Rule, Gerald C. Tustin, Donald L. Carver, Jerry S. Fauver
  • Patent number: 4788353
    Abstract: A method for the synthesis of iodobenzene by oxydative iodination in a gaseous phase of benzene with iodine and oxygen, air or another gas containing oxygen, in the presence of a zeolitic catalyst, selected from the group comprising the zeolites of ZSM 5 and ZSM 11 type.
    Type: Grant
    Filed: March 4, 1987
    Date of Patent: November 29, 1988
    Assignee: Montedipe S.p.A.
    Inventors: Giuseppe Paparatto, Marco Saetti
  • Patent number: 4788354
    Abstract: A method for the synthesis of iodobenzene by iodination, in the gaseous phase, of benzene with iodine, in the presence of a zeolitic catalyst, selected from the group comprising the zeolites of X type or of Y type, characterized in that said iodination is an oxidative one and that said zeolites are in a form different from the acid (H) form.
    Type: Grant
    Filed: February 27, 1987
    Date of Patent: November 29, 1988
    Assignee: Montedipe S.p.A.
    Inventors: Giuseppe Paparatto, Marco Saetti
  • Patent number: 4788356
    Abstract: A process for iodinating aromatic compounds, comprising the steps of iodinating an aromatic compound, separating a desired iodoaromatic product from the product mixture, purifying said desired iodoaromatic product, and isolating said desired product.
    Type: Grant
    Filed: October 16, 1987
    Date of Patent: November 29, 1988
    Assignee: Eastman Kodak Company
    Inventor: Gerald C. Tustin
  • Patent number: 4788355
    Abstract: Disclosed is a process for iodinating an aromatic compound over a zeolite catalyst containing a deactivation modifier selected from the group consisting of ions or salts of hydrogen, copper, zinc, cadmium, silver and mercury.
    Type: Grant
    Filed: October 16, 1987
    Date of Patent: November 29, 1988
    Assignee: Eastman Kodak Company
    Inventor: Mark Rule
  • Patent number: 4778938
    Abstract: This invention relates to a process for iodination of aromatic compounds in the presence of oxygen over a zeolite catalyst.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: October 18, 1988
    Assignee: Eastman Kodak Company
    Inventors: Mark Rule, Donald W. Lane, Thomas H. Larkins, Jr., Gerald C. Tustin
  • Patent number: 4778940
    Abstract: A process for iodinating an aromatic compound in which a source of iodine is reacted with the aromatic compound in the presence of oxygen over a non-acid catalyst wherein the aromatic compound has a fluoro, chloro, bromo, iodo, hydroxy or cyano group.
    Type: Grant
    Filed: March 25, 1987
    Date of Patent: October 18, 1988
    Assignee: Eastman Kodak Company
    Inventors: Mark Rule, Gerald C. Tustin, Donald W. Lane, Thomas H. Larkins
  • Patent number: 4778939
    Abstract: The invention relates to a process for iodinating an aromatic compound which comprises reacting iodine and the aromatic compound over a non-acid catalyst, wherein the catalyst has been contacted with an alkali or alkaline earth metal salt, with a source of iodine and a source of molecular oxygen.
    Type: Grant
    Filed: March 25, 1987
    Date of Patent: October 18, 1988
    Assignee: Eastman Kodak Company
    Inventors: Gerald C. Tustin, Mark Rule
  • Patent number: 4746758
    Abstract: This invention relates to a process for iodination of aromatic compounds in the presence of oxygen over a zeolite catalyst.
    Type: Grant
    Filed: September 29, 1986
    Date of Patent: May 24, 1988
    Assignee: Eastman Kodak Company
    Inventors: Mark Rule, Donald W. Lane, Thomas H. Larkins, Jr., Gerald C. Tustin
  • Patent number: 4460797
    Abstract: A reagent comprising the product of the reaction of an alkali metal hydroxide with a polyglycol or a polyglycol monoalkyl ether and oxygen, effects complete decomposition of halogenated organic compounds, such as polychlorinated biphenyls (PCBs), when mixed therewith in the presence of oxygen.
    Type: Grant
    Filed: June 13, 1983
    Date of Patent: July 17, 1984
    Assignee: The Franklin Institute
    Inventors: Louis L. Pytlewski, Kenneth Krevitz, Arthur B. Smith
  • Patent number: 4351819
    Abstract: In an integrated process for oxychlorination and combustion of chlorinated hydrocarbons, chlorinated hydrocarbon is burned to recover chlorine values essentially as hydrogen chloride. Hydrogen chloride is recovered from the effluent from the combustion by absorption with aqueous hydrogen chloride. Hydrogen chloride recovered by the absorption is subsequently recovered and employed in an oxychlorination reaction. A gas containing hydrogen chloride, water vapor and some oxygen recovered from the oxychlorination is cooled to condense aqueous hydrogen chloride which is employed in the absorption for recovering hydrogen chloride. The remaining gas is employed in the combustion of chlorinated hydrocarbons.
    Type: Grant
    Filed: January 26, 1981
    Date of Patent: September 28, 1982
    Assignee: The Lummus Company
    Inventors: Herbert Riegel, Chiung-Yuan Huang
  • Patent number: 4346069
    Abstract: In an integrated process for oxychlorination and combustion of chlorinated hydrocarbons, chlorinated hydrocarbons is burned to recover chlorine values essentially as hydrogen chloride. Combustion effluent and off-gas from an oxychlorination reaction are simultaneously treated to recover anhydrous hydrogen chloride for use in the oxychlorination reaction. In accordance with one embodiment, off-gas from the oxychlorination is employed in the combustion, prior to hydrogen chloride recovery in order to utilize any oxygen values therein. The process has particular applicability to an oxychlorination reaction of the type wherein a molten salt containing the higher and lower valent chlorides of a multivalent metal is contacted with hydrogen chloride and oxygen to recover hydrogen chloride by enriching the higher valent metal chloride content of the molten salt.
    Type: Grant
    Filed: January 26, 1981
    Date of Patent: August 24, 1982
    Assignee: The Lummus Company
    Inventors: Herbert Riegel, Chiung-Yuan Huang
  • Patent number: 4329526
    Abstract: An improvement in fluid-bed oxychlorination methods comprising in combination a generally cup-shaped container and an inverted generally cone-shaped gas distributor having a truncated apex the section of truncation defining a generally circular or polygonal opening, the lip portion of the container fitting against the similarly-shaped opening of the distributor.
    Type: Grant
    Filed: November 17, 1980
    Date of Patent: May 11, 1982
    Assignee: Monsanto Company
    Inventors: Melvin R. Bagley, Burton B. Crocker, John F. Pysz
  • Patent number: 4306104
    Abstract: Chlorobenzene is produced by contacting a gaseous flow comprising benzene, oxygen and a halogenating agent, at a temperature of from 190.degree. to 230.degree. C., with a fluidized bed of catalyst particles comprising copper chloride deposited on an eta alumina support having a total volume of pores of from 0.3 to 0.5 ml/g and a surface area of from 250 to 400 m.sup.2 /g.
    Type: Grant
    Filed: August 30, 1977
    Date of Patent: December 15, 1981
    Assignee: Euteco S.p.A.
    Inventors: Roberto Canavesi, Roberto Ghezzi, Giorgio Podesta