Employing Formamide Or Formate As Reactant Patents (Class 423/373)
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Patent number: 10882030Abstract: A hydroprocessing catalyst has been developed. The catalyst is a crystalline transition metal tungstate material or metal sulfides derived therefrom, or both. The hydroprocessing using the crystalline transition metal tungstate material may include hydrodenitrification, hydrodesulfurization, hydrodemetallation, hydrodesilication, hydrodearomatization, hydroisomerization, hydrotreating, hydrofining, and hydrocracking.Type: GrantFiled: August 21, 2018Date of Patent: January 5, 2021Assignee: UOP LLCInventors: Stuart R. Miller, Susan C. Koster
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Patent number: 10441942Abstract: The reaction tube for preparing hydrogen cyanide comprises a cylindrical tube composed of ceramic, a catalyst comprising platinum applied to the inner wall of the tube and also at least one insert composed of ceramic, having three or four fins pointing from the tube axis to the inner wall of the tube, which is inserted into the cylindrical tube, wherein the fins divide the tube interior space into substantially straight channels with substantially identical circle segment cross sections and wherein the mean gap between the ends of the fins and the inner wall of the tube is in the range of 0.1 to 3 mm. In the method for preparing hydrogen cyanide, ammonia and at least one aliphatic hydrocarbon having 1 to 4 carbon atoms are reacted in the reaction tube at 1000 to 1400° C.Type: GrantFiled: October 2, 2014Date of Patent: October 15, 2019Assignee: Evonik Degussa, GmbHInventors: Martin Steffan, Martin Steurenthaler, Thomas Müller, Martin Körfer, Steffen Krill
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Patent number: 9034293Abstract: Process for preparing hydrocyanic acid by catalytic dehydration of gaseous formamide, wherein the dehydration of formamide is coupled with an exothermic reaction by the reactor used in the dehydration comprising two separate fluid paths which are separated by a common reactor wall, with one fluid path being provided for the dehydration of formamide and the second fluid path being provided for the exothermic reaction.Type: GrantFiled: March 30, 2009Date of Patent: May 19, 2015Assignee: BASF SEInventors: Ralf Boehling, Andreas Deckers, Achim Gritsch, Stefan Kotrel
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Publication number: 20150044122Abstract: A device and a method are provided for reacting a starting material in at least two reactors connected to each other, including the reacting of the starting material in a first reactor to a first product, removing the first product from the first reactor using a jet pump, wherein a negative pressure zone of the jet pump is operationally connected to the first reactor, so that the first product of the first reactor moves through the negative pressure zone in a propulsion jet of a propulsion medium of the jet pump, conducting the propulsion medium having the first product into a second reactor, wherein the first product is allowed to react into a second product, separating the second product from the propulsion medium and discharging the separated second product.Type: ApplicationFiled: March 19, 2013Publication date: February 12, 2015Inventors: Stefan Zikeli, Friedrich Ecker
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Publication number: 20110182798Abstract: The invention relates to an improved process for vaporizing organic compounds and the further conversion thereof.Type: ApplicationFiled: January 21, 2011Publication date: July 28, 2011Applicant: BASF SEInventors: Ralf Böhling, Michael Schipper, Stefan Birnbach, Peter Petersen, Achim Gritsch, Alois Wellisch, Hermann Luyken, Albert Steiner, Peter Zehner
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Publication number: 20110033363Abstract: Process for preparing hydrocyanic acid by catalytic dehydration of gaseous formamide, wherein the dehydration of formamide is coupled with an exothermic reaction by the reactor used in the dehydration comprising two separate fluid paths which are separated by a common reactor wall, with one fluid path being provided for the dehydration of formamide and the second fluid path being provided for the exothermic reaction.Type: ApplicationFiled: March 30, 2009Publication date: February 10, 2011Applicant: BASE SEInventors: Ralf Boehling, Andreas Deckers, Achim Gritsch, Stefan Kotrel
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Publication number: 20100316552Abstract: A process for preparing hydrogen cyanide, comprising the provision of gaseous formamide by evaporating liquid formamide in an evaporator (step i)) and the catalytic dehydration of the gaseous formamide (step ii)), and also an apparatus for performing the process according to the invention, comprising at least one microevaporator and a tubular reactor, and the use of a microevaporator for evaporating formamide in a process for preparing hydrogen cyanide from formamide.Type: ApplicationFiled: November 10, 2008Publication date: December 16, 2010Applicants: BASF SE, KARLSRUHER INSTITUT F. TECHNOLOGIE KITInventors: Ralf Boehling, Andreas Deckers, Thomas Schneider, Guenther Achhammer, Hermann Luyken, Peter Pfab, Klaus Schubert, Manfred Kraut
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Patent number: 7850939Abstract: Process for preparing hydrocyanic acid, which comprises catalytic dehydration of gaseous formamide to give a product mixture comprising hydrocyanic acid, water, formamide, ammonia, CO and high boilers, separation of the product mixture by condensation of a condensate comprising water, formamide, high boilers and possibly ammonia and hydrocyanic acid from the product mixture obtained and partial or total recirculation of the condensate into a heat exchanger located downstream of the reactor.Type: GrantFiled: August 28, 2007Date of Patent: December 14, 2010Assignee: BASF AktiengesellschaftInventors: Andreas Deckers, Thomas Schneider
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Publication number: 20100284889Abstract: A process for preparing hydrogen cyanide by catalytically dehydrating gaseous formamide in a tubular reactor formed from at least one reaction channel in which the catalytic dehydration proceeds, said reaction channel having an inner surface which is formed from a material having an iron content of ?50% by weight, and no additional catalysts and/or internals being present in the reaction channel, and the at least one reaction channel having a mean hydraulic diameter of from 0.5 to 6 mm, and a reactor with the features specified above and the use of the inventive reactor for preparing hydrogen cyanide by catalytically dehydrating gaseous formamide.Type: ApplicationFiled: November 12, 2008Publication date: November 11, 2010Applicant: BASF SEInventors: Ralf Boehling, Andreas Deckers, Thomas Schneider, Guenther Achhammer, Hermann Luyken, Peter Pfab
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Publication number: 20100021365Abstract: Process for preparing hydrocyanic acid, which comprises catalytic dehydration of gaseous formamide to give a product mixture comprising hydrocyanic acid, water, formamide, ammonia, CO and high boilers, separation of the product mixture by condensation of a condensate comprising water, formamide, high boilers and possibly ammonia and hydrocyanic acid from the product mixture obtained and partial or total recirculation of the condensate into a heat exchanger located downstream of the reactor.Type: ApplicationFiled: August 28, 2007Publication date: January 28, 2010Applicant: BASF SEInventors: Andreas Deckers, Thomas Schneider
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Patent number: 7514059Abstract: Process for preparing hydrocyanic acid by catalytic dehydration of gaseous formamide, in which a formamide-containing recycle stream is obtained from the product mixture after the dehydration and is recirculated to the dehydration, wherein the formamide-containing recycle stream contains from 5 to 50% by weight of water.Type: GrantFiled: September 2, 2005Date of Patent: April 7, 2009Assignee: BASF AktiengesellschaftInventors: Andreas Deckers, Arnulf Lauterbach, Anton Negele, Thomas Schneider
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Patent number: 7294326Abstract: The present invention relates to a process for preparing hydrocyanic acid (HCN) by catalytic dehydration of gaseous formamide in a reactor which has an internal reactor surface made of a steel comprising iron and chromium and nickel, and also to a reactor for preparing hydrocyanic acid by catalytic dehydration of gaseous formamide, which reactor has an internal reactor surface made of a steel comprising iron and chromium and nickel, and also to the use of the reactor of the present invention in a process for preparing hydrocyanic acid by catalytic dehydration of gaseous formamide.Type: GrantFiled: December 3, 2003Date of Patent: November 13, 2007Assignee: BASF AktiengesellschaftInventors: Peter Bassler, Wolfgang Siegel, Guenther Achhammer, Anton Negele, Helmuth Menig, Wilhelm Ruppel, Peter Zehner, Hermann Luyken, Volker Vogt
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Publication number: 20020018744Abstract: In a continuous process for preparing hydrocyanic acid by thermolysis of gaseous, superheated formamide at elevated temperature and reduced pressure in the presence of a finely divided solid catalyst in a thermolysis reactor, the solid catalyst is kept in motion by upward-directed or downward-directed vertical flow of the gaseous reaction mixture.Type: ApplicationFiled: December 12, 2000Publication date: February 14, 2002Inventors: Wolfgang Mattmann, Walter Lenz, Helmuth Menig, Wolfgang Siegel
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Patent number: 5439661Abstract: There is disclosed a process for efficiently producing hydrogen cyanide at a reaction temperature of preferably 250.degree. to 550.degree. C. by a catalytic dehydrative reaction of formamide which comprises employing as a catalyst, a manganese oxide (MnO) and/or a magnesium oxide (MgO) each modified with an alkali metal (Na, K, Rb, Cs, etc. ). The above process is capable of producing hydrogen cyanide at an enhanced conversion efficiency of formamide and at a high selectivity while minimizing the by-production of ammonia. The use of the catalyst comprising as a principal component, MnO modified with an alkali metal is particularly effective in prolonging its service life and enables a long-term stable operation.Type: GrantFiled: October 27, 1994Date of Patent: August 8, 1995Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Takafumi Abe, Shuji Ebata, Kazuhiro Sugamura, Taiji Matsuzaki, Hirofumi Higuchi
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Patent number: 4869889Abstract: A process for the production of hydrogen cyanide which comprises combining methanol ammoxidation with formamide decomposition in the same reactor, using a metal oxide catalyst. This process generally involves forming a gaseous reaction mixture comprising methanol, formamide, ammonia, oxygen and optionally formaldehyde. This reaction mixture is then passed over the metal oxide catalyst at a temperature in the range 200.degree. to 600.degree. and a pressure in the range 5 to 20 psig.Type: GrantFiled: March 23, 1989Date of Patent: September 26, 1989Assignee: W. R. Grace & Co.-Conn.Inventors: Martin B. Sherwin, Jow-Lih Su
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Patent number: 4745207Abstract: Reaction products of hydrogen cyanide are prepared by a process in which hydrogen cyanide prepared in a conventional manner by pyrolysis at from 250.degree. to 650.degree. C. over a solid under from 5 to 200 mbar is cooled to a temperature of from 200.degree. to -10.degree. C. together with the other pyrolysis products, the hydrogen cyanide is then fed to a chemisorption reaction with a base or with a carbonyl compound, and the reaction products of hydrogen cyanide which are formed therein are removed from the system and brought to atmospheric pressure. In this process, the handling of large amounts of hydrogen cyanide is avoided.Type: GrantFiled: November 25, 1985Date of Patent: May 17, 1988Assignee: BASF AktiengesellschaftInventors: Fritz Brunnmueller, Karlheinz Stecher, Michael Kroener, Rolf Schneider
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Patent number: 4693877Abstract: A process for the thermolytic cleavage of formamide to give hydrocyanic acid and water over alumina or alumina/silica moldings subjected to final sintering or over high temperature corrosion-resistant stainless steel packings in the presence of atmospheric oxygen possesses, in particular, high HCN selectively and a high formamide conversion.Type: GrantFiled: July 17, 1986Date of Patent: September 15, 1987Assignee: BASF AktiengesellschaftInventors: Ubbo v. Oehsen, Karlheinz Stecher, Waldemar Koehler, Berthold Mueller, Fritz Brunnmueller, Rolf Schneider