Patents by Inventor Martin Sesing

Martin Sesing has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20110014114
    Abstract: A catalyst for gas-phase reactions which has high mechanical stability and comprises one or more active metals on a support comprising aluminum oxide as support material, wherein the aluminum oxide in the support consists essentially of alpha-aluminum oxide. Ruthenium, copper and/or gold are preferred as active metal. Particularly preferred catalysts according to invention comprise a) from 0.001 to 10% by weight of ruthenium, copper and/or gold, b) from 0 to 5% by weight of one or more alkaline earth metals, c) from 0 to 5% by weight of one or more alkali metals, d) from 0 to 10% by weight of one or more rare earth metals, e) from 0 to 10% by weight of one or more further metals selected from the group consisting of palladium, platinum, osmium, iridium, silver and rhenium, in each case based on the total weight of the catalyst, on the support comprising alpha-Al2O3. The catalysts are preferably used in the oxidation of hydrogen chloride (Deacon reaction).
    Type: Application
    Filed: September 22, 2010
    Publication date: January 20, 2011
    Applicant: BASF SE
    Inventors: Olga SCHUBERT, Martin Sesing, Lothar Seidemann, Martin Karches, Thomas Grassler, Martin Sohn
  • Patent number: 7819949
    Abstract: (Chloro)hydrocarbon-free hydrogen chloride and phosgene-free (chloro)hydrocarbons are recovered from a hydrogen chloride stream having (chloro)hydrocarbons and phosgene.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: October 26, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Sesing, Heiner Schelling, Juergen Ciprian, Filip Deberdt, Martin Karches, Olga Schubert
  • Patent number: 7736598
    Abstract: The invention relates to a reactor and a process for preparing chlorine from hydrogen chloride by gas-phase oxidation by means of oxygen in the presence of a heterogeneous catalyst in a fluidized bed, with gas-permeable plates being located in the fluidized bed. The gas-permeable plates are connected in a thermally conductive manner to a heat exchanger located in the fluidized bed.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: June 15, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Lothar Seidemann, Olga Schubert, Martin Sesing, Eckhard Stroefer, Martin Fiene, Christian Walsdorff, Klaus Harth
  • Patent number: 7704469
    Abstract: The invention relates to a process for recovering ruthenium from a used ruthenium-comprising catalyst which comprises ruthenium as ruthenium oxide on a support material which is sparingly soluble in mineral acid, which comprises the steps: a) the catalyst comprising ruthenium oxide is treated in a stream of hydrogen, with ruthenium oxide present on the support being reduced to metallic ruthenium; b) the reduced catalyst from step a) comprising metallic ruthenium on the support material is treated with hydrochloric acid in the presence of an oxygen-comprising gas, with the metallic ruthenium present on the support being dissolved as ruthenium(III) chloride and being obtained as ruthenium(III) chloride solution; c) if appropriate, the ruthenium(III) chloride solution from step b) is worked up further.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: April 27, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Olga Schubert, Heiko Urtel, Michael Hesse, Martin Sesing, Claus Hofmann, Iris Kristalis
  • Patent number: 7659430
    Abstract: The invention relates to a process for separating hydrogen chloride and phosgene, which comprises bringing a mixture of hydrogen chloride and phosgene into contact with an ionic liquid in which at least part of the hydrogen chloride is dissolved in a step a) and then separating off the hydrogen chloride dissolved in the ionic liquid in a step b).
    Type: Grant
    Filed: September 10, 2005
    Date of Patent: February 9, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Woelfert, Carsten Knoesche, Hans-Juergen Pallasch, Martin Sesing, Eckhard Stroefer, Hans-Martin Polka, Manfred Heilig
  • Publication number: 20090304572
    Abstract: Process for preparing chlorine from hydrogen chloride, which comprises the steps: a) feeding of a stream a1 comprising hydrogen chloride and of a stream a2 comprising oxygen into an oxidation zone and catalytic oxidation of hydrogen chloride to chlorine, giving a product gas stream a3 comprising chlorine, water, oxygen, carbon dioxide and inert gases; b) contacting of the product gas stream a3 with aqueous hydrochloric acid I in a phase contact apparatus and partial separation of water and of hydrogen chloride from the stream a3, leaving a gas stream b comprising hydrogen chloride, chlorine, water, oxygen, carbon dioxide and possibly inert gases, with at least 5% of the hydrogen chloride comprised in the stream a3 remaining in the gas stream b; c) drying of the gas stream b) to leave a gas stream c which is substantially free of water and comprises hydrogen chloride, chlorine, oxygen, carbon dioxide and possibly inert gases; d) partial liquefaction of the gas stream c by compression and cooling, giving an at
    Type: Application
    Filed: January 26, 2007
    Publication date: December 10, 2009
    Applicant: BASF SE
    Inventors: Martin Sesing, Knud Jacobsen, Klaus-Dieter Reinhardt, Hans-Juergen Pallasch, Peter Van Den Abeel, Heiner Schelling
  • Publication number: 20090269270
    Abstract: A process for preparing chlorine in a fluidized-bed reactor, in which a gaseous reaction mixture comprising hydrogen chloride and oxygen flows from the bottom upward through a heterogeneous particulate catalyst forming a fluidized bed, wherein the fluidized bed is provided with internals which divide the fluidized bed into a plurality of cells arranged horizontally in the fluidized-bed reactor and a plurality of cells arranged vertically in the fluidized-bed reactor, with the cells having cell walls which are permeable to gas and have openings which ensure an exchange number of the heterogeneous, particulate catalyst in the vertical direction in the range from 1 to 100 liters/hour per liter of reactor volume, is proposed.
    Type: Application
    Filed: September 19, 2007
    Publication date: October 29, 2009
    Applicant: BASF SE
    Inventors: Lothar Seidemann, Martin Karches, Dieter Stuetzer, Martin Sesing, Olga Schubert, Heiko Urtel
  • Publication number: 20090112017
    Abstract: The invention relates to a process for preparing polyisocyanates by reacting primary amines with phosgene in the presence of a solvent, wherein ionic liquids are used as solvents.
    Type: Application
    Filed: October 27, 2005
    Publication date: April 30, 2009
    Applicant: BASF Aktiengessellschaft
    Inventors: Martin Sesing, Thorsten Rohde, Eckhard Stroefer, Jochem Henkelmann
  • Publication number: 20090112018
    Abstract: The invention provides a process for preparing isocyanates by reacting the corresponding amines with phosgene in the presence of solvents, wherein compounds which form salt melts with hydrogen chloride are used as solvents.
    Type: Application
    Filed: October 22, 2005
    Publication date: April 30, 2009
    Applicant: BASF Aktiengesellschaft
    Inventors: Martin Sesing, Hartwig Voss, Eckhard Stroefer, Thorsten Rohde, Andreas Wolfert
  • Publication number: 20080295688
    Abstract: Process for recovering (chloro)hydrocarbon-free hydrogen chloride and phosgene-free (chloro)hydrocarbons from a hydrogen chloride stream comprising (chloro)hydrocarbons and phosgene, which comprises i) in a first step, connecting a first adsorber and a second adsorber in series and passing the fresh hydrogen chloride stream comprising phosgene and (chloro)hydrocarbons firstly through the first adsorber and subsequently through the second adsorber until essentially no more (chloro)hydrocarbon is adsorbed by the first adsorber, ii) in a second step, passing the fresh hydrogen chloride stream through the second adsorber while the first adsorber is regenerated, with essentially phosgene-free (chloro)hydrocarbon being obtained in the regeneration, iii) in a third step, passing the fresh hydrogen chloride steam firstly through the second adsorber and subsequently through the regenerated first adsorber until essentially no more (chloro)hydrocarbon is adsorbed by the second adsorber, iv) in a fourth step, passing
    Type: Application
    Filed: January 25, 2007
    Publication date: December 4, 2008
    Applicant: BASF SE
    Inventors: Martin Sesing, Heiner Schelling, Jurgen Ciprian, Filip Deberdt, Martin Karches, Olga Schubert
  • Publication number: 20080293836
    Abstract: The invention relates to a process for recovering ruthenium from a used ruthenium-comprising catalyst which comprises ruthenium as ruthenium oxide on a support material which is sparingly soluble in mineral acid, which comprises the steps: a) the catalyst comprising ruthenium oxide is treated in a stream of hydrogen, with ruthenium oxide present on the support being reduced to metallic ruthenium; b) the reduced catalyst from step a) comprising metallic ruthenium on the support material is treated with hydrochloric acid in the presence of an oxygen-comprising gas, with the metallic ruthenium present on the support being dissolved as ruthenium(III) chloride and being obtained as ruthenium(III) chloride solution; c) if appropriate, the ruthenium(III) chloride solution from step b) is worked up further.
    Type: Application
    Filed: December 21, 2006
    Publication date: November 27, 2008
    Applicant: BASF SE
    Inventors: Olga Schubert, Heiko Urtel, Michael Hesse, Martin Sesing, Claus Hofmann, Iris Kristalis
  • Publication number: 20080247941
    Abstract: A catalyst for gas-phase reactions which has high mechanical stability and comprises one or more active metals on a support comprising aluminum oxide as support material, wherein the aluminum oxide in the support consists essentially of alpha-aluminum oxide. Ruthenium, copper and/or gold are preferred as active metal. Particularly preferred catalysts according to invention comprise a) from 0.001 to 10% by weight of ruthenium, copper and/or gold, b) from 0 to 5% by weight of one or more alkaline earth metals, c) from 0 to 5% by weight of one or more alkali metals, d) from 0 to 10% by weight of one or more rare earth metals, e) from 0 to 10% by weight of one or more further metals selected from the group consisting of palladium, platinum, osmium, iridium, silver and rhenium, in each case based on the total weight of the catalyst, on the support comprising alpha-Al2O3. The catalysts are preferably used in the oxidation of hydrogen chloride (Deacon reaction).
    Type: Application
    Filed: August 22, 2006
    Publication date: October 9, 2008
    Applicant: BASF SE
    Inventors: Olga Schubert, Martin Sesing, Lothar Seidemann, Martin Karches, Thomas Grassler, Martin Sohn
  • Publication number: 20080233043
    Abstract: A process for preparing chlorine by gas-phase oxidation of hydrogen chloride by means of a gas stream comprising molecular oxygen in the presence of a fixed-bed catalyst, wherein the process is carried out in a reactor (1) having heat-exchange plates (2) which are arranged in the longitudinal direction of the reactor (1) and have a spacing between them and through which a heat transfer medium flows, inlet and outlet facilities (3, 4) for the heat transfer medium to the heat-exchange plates (2) and also gaps (5) between the heat-exchange plates (2) in which the fixed-bed catalyst is present and into which the hydrogen chloride and the gas stream comprising molecular oxygen are passed, is described.
    Type: Application
    Filed: December 23, 2004
    Publication date: September 25, 2008
    Applicant: BASF Akiengesellschaft
    Inventors: Gerhard Olbert, Olga Schubert, Martin Sesing, Eckhard Stroefer, Martin Fiene
  • Publication number: 20080159948
    Abstract: Process for preparing chlorine from hydrogen chloride, which comprises the steps: a) feeding of a stream a1 comprising hydrogen chloride and of a stream a2 comprising oxygen into an oxidation zone and catalytic oxidation of hydrogen chloride to chlorine, giving a product gas stream a3 comprising chlorine, water, oxygen, carbon dioxide and inert gases; b) cooling of the product gas stream a3 and removal of water and hydrogen chloride as aqueous hydrochloric acid, leaving a gas stream b comprising chlorine, water, oxygen, carbon dioxide and inert gases; c) optional drying of the gas stream b) to leave a gas stream c which is substantially free of water and comprises chlorine, oxygen, carbon dioxide and inert gases; d) at least partial liquefaction of the gas stream c and of a chlorine-rich recycle stream f1 comprising chlorine, oxygen and carbon dioxide by compression and cooling, giving an at least partially liquefied stream d; e) gas/liquid separation of the stream d into a gas stream e1 comprising chlorine,
    Type: Application
    Filed: February 20, 2006
    Publication date: July 3, 2008
    Applicant: BASF Aktiengesellschaft
    Inventors: Martin Sesing, Armin Diefenbacher, Hartwig Voss, Olga Schubert, Lothar Seidemann, Martin Karches, Thomas Grassler, Eckhard Stroefer
  • Publication number: 20070293707
    Abstract: The invention relates to a process for separating hydrogen chloride and phosgene, which comprises bringing a mixture of hydrogen chloride and phosgene into contact with an ionic liquid in which at least part of the hydrogen chloride is dissolved in a step a) and then separating off the hydrogen chloride dissolved in the ionic liquid in a step b).
    Type: Application
    Filed: September 10, 2005
    Publication date: December 20, 2007
    Applicant: BASF Aktiengesellschaft
    Inventors: Andreas Wolfert, Carsten Knosche, Hans-Jurgen Pallasch, Martin Sesing, Eckhard Stroefer, Hans-Martin Polka, Manfred Heilig
  • Publication number: 20070269309
    Abstract: The invention relates to a method of operating a liquid ring compressor having an impeller installed eccentrically in a compressor body, with gas being supplied to the liquid ring compressor on a suction side and gas being discharged from the liquid ring compressor on a pressure side. A liquid ring is generated in the liquid ring compressor on the inside of the compressor body by rotation of the impeller. Chambers are formed between blades of the impeller and the liquid ring and gas is drawn into these. The gas is compressed in the chambers which become smaller from the suction side to the pressure side as a result of the rotation of the eccentrically mounted impeller. The compressed gas is ejected on the pressure side. An ionic liquid is used as service liquid for generation of the liquid ring.
    Type: Application
    Filed: September 16, 2005
    Publication date: November 22, 2007
    Applicant: BASF Aktiengesellschaft
    Inventors: Christian Muller, Martin Sesing, Martin Fiene, Oliver Huttenloch, Eckhard Stroefer
  • Publication number: 20070202035
    Abstract: The invention relates to a process for carrying out exothermic chemical equilibrium reactions in a fluidized-bed reactor, wherein there is a temperature distribution in the fluidized bed of the fluidized-bed reactor and the temperature difference between the lowest temperature and the highest temperature is at least 10 K. The invention further relates to a fluidized-bed reactor for carrying out chemical reactions in a fluidized bed (5), wherein at least one heat exchanger (12, 28) is located in the fluidized bed (5) to control the temperature distribution.
    Type: Application
    Filed: March 21, 2005
    Publication date: August 30, 2007
    Inventors: Christian Walsdorff, Lothar Seidemann, Martin Sesing, Martin Fiene, Thomas Grassler, Olga Schubert, Eckhard Stroefer, Martin Sohn
  • Publication number: 20070183963
    Abstract: The invention relates to a reactor and a process for preparing chlorine from hydrogen chloride by gas-phase oxidation by means of oxygen in the presence of a heterogeneous catalyst in a fluidized bed, with gas-permeable plates being located in the fluidized bed. The gas-permeable plates are connected in a thermally conductive manner to a heat exchanger located in the fluidized bed.
    Type: Application
    Filed: February 8, 2005
    Publication date: August 9, 2007
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventors: Lothar Seidemann, Olga Schubert, Martin Sesing, Eckhard Stroefer, Martin Fiene, Christian Walsdorff, Klaus Harth
  • Publication number: 20060263290
    Abstract: The invention relates to a process for preparing chlorine by catalytic gas-phase oxidation of hydrogen chloride, which comprises the steps: a) providing a feed gas stream I comprising hydrogen chloride and a feed gas stream II comprising oxygen; b) in a first oxidation stage, feeding the feed gas stream I, the feed gas stream II, if desired a recycle stream la comprising hydrogen chloride and if desired an oxygen-containing recycle stream IIa into a first oxidation zone and bringing them into contact with a first oxidation catalyst so that a first partial amount of the hydrogen chloride is oxidized to chlorine and a gas stream III comprising chlorine, unreacted oxygen, unreacted hydrogen chloride and water vapor is obtained; c) in a second oxidation stage, feeding the gas stream III into a second oxidation zone and bringing it into contact with at least one further oxidation catalyst so that a second partial amount of the hydrogen chloride is oxidized to chlorine and a product gas stream IV comprising chlorin
    Type: Application
    Filed: August 6, 2004
    Publication date: November 23, 2006
    Applicant: BASF Aktiengesellschaft
    Inventors: Christian Walsdorff, Martin Fiene, Martin Sesing, Olga Metelkina, Lothar Seidemann, Eckhard Stroefer, Klaus Harth