Patents by Inventor Klaus Joachim Mueller-Engel

Klaus Joachim Mueller-Engel 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).

  • Process for removing methacrolein from liquid phase comprising acrylic acid as a main constituent and target product, and methacrolein as a secondary component
    Patent number: 7601866
    Abstract: A process for removing methacrolein from liquid phase P comprising acrylic acid as a main constituent and target product, and methacrolein as a secondary component in which the removal is effected by crystallization, the acrylic acid accumulating in the crystals formed and the methacrolein in the remaining mother liquor.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: October 13, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Joerg Heilek, Klaus Joachim Mueller-Engel, Christoph Adami, Martin Dieterle
  • Preparation of acrolein or acrylic acid or a mixture thereof by heterogeneously catalyzed partial gas phase oxidation of propylene
    Patent number: 7592483
    Abstract: A process for preparing acrolein or acrylic acid or a mixture thereof by heterogeneously catalyzed partial gas oxidation of propylene, in which the starting reaction gas mixture has the following contents: from 6 to 9% by volume of propylene, from 8 to 18% by volume of molecular oxygen, from 6 to 30% by volume of propane and from 32 to 72% by volume of molecular nitrogen.
    Type: Grant
    Filed: May 18, 2005
    Date of Patent: September 22, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Dieterle, Armin Diefenbacher, Goetz-Peter Schindler, Catharina Klanner, Klaus Joachim Mueller-Engel, Christoph Adami
  • Process for separating acrylic acid and benzoic acid present in a product gas mixture of a partial heterogeneously catalyzed gas phase oxidation of a Cprecursor compound of acrylic acid
    Patent number: 7589236
    Abstract: A process for separating acrylic acid and benzoic acid present in the product gas mixture of a partial oxidation to acrylic acid, in which the acrylic acid and the benzoic acid are first converted to a liquid phase, constituents having a lower boiling point than benzoic acid and acrylic acid are removed therefrom by thermal separating processes, and the acrylic acid is removed by crystallization from the remaining liquid phase.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: September 15, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Joerg Heilek, Klaus Joachim Mueller-Engel, Martin Dieterle, Armin Diefenbacher
  • Thermal treatment of the precursor material of a catalytically active material
    Patent number: 7589046
    Abstract: In a process for the thermal treatment of the precursor material of a catalytically active material in a rotary tube furnace through which a gas stream flows, at least a proportion of the gas stream flowing through the rotary tube furnace is circulated, and the associated rotary tube furnace apparatus and tube-bundle reactors for the partial gas-phase oxidation of acrolein to acrylic acid are loaded with catalysts whose catalytically active material is obtainable by the process for the thermal treatment.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: September 15, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Dieterle, Wolfgang Juergen Poepel, Silke Berndt, Raimund Felder, Signe Unverricht, Klaus Joachim Mueller-Engel
  • Rectificative separation of an acrylic acid-containing liquid
    Patent number: 7560590
    Abstract: A process for rectificatively separating an acrylic acid-containing liquid, by withdrawing an acrylic acid-rich stream from the rectification column above the feed point and polymerization-inhibiting the upper section of the rectification column by means of diacrylic acid.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: July 14, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Frank Hoefer, Volker Schliephake, Klaus Joachim Mueller-Engel
  • Method for performing the purifying separation of crystals out their suspension in a mother liquor
    Patent number: 7540884
    Abstract: A process for purifying removal of crystals from their suspension in mother liquor by means of a washing column having forced transport in which the process chamber is encased by a metal wall which, on its side facing away from the process chamber, is heated at least along the length of the pure melt zone.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: June 2, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Hammon, Dieter Baumann, Joerg Heilek, Klaus Joachim Mueller-Engel, Bernd Eck
  • Preparation of catalytically active multielement oxide materials which contain at least one of the elements Nb and W and the elements Mo, V and Cu
    Patent number: 7524792
    Abstract: Catalytically active multielement oxide materials which contain at least one of the elements Nb and W and the elements Mo, V and Cu are prepared by a process in which an intimate dry blend containing ammonium ions is prepared and said dry blend is subjected to a thermal treatment in an atmosphere having a low molecular oxygen content at elevated temperatures, a portion of the ammonium ions contained in the intimate dry blend being decomposed with liberation of ammonia and the oxygen content of the thermal treatment atmosphere being increased in the course of the thermal treatment.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: April 28, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Dieterle, Hartmut Hibst, Wolfgang Juergen Poepel, Jochen Petzoldt, Klaus Joachim Mueller-Engel
  • Process for preparing acrolein or acrylic acid or a mixture thereof from propane
    Patent number: 7524987
    Abstract: A process for preparing acrolein, or acrylic acid or a mixture thereof as a target product from propane, in which propane is partially dehydrogenated under heterogeneous catalysis in a reaction zone A, molecular hydrogen thus formed is incinerated partly to water and the product gas A thus formed in reaction zone A is used without secondary component removal to charge a reaction zone B in which propylene present in product gas A is partially oxidized to the target product. From the product gas B formed in reaction zone B, the target product is removed and the residual gas I remaining after an aftertreatment comprising a CO2 scrubbing and a partial discharge thereof is recycled into reaction zone A.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: April 28, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Otto Machhammer, Klaus Joachim Müller-Engel, Martin Dieterle
  • Process for heterogeneously catalyzed gas phase partial oxidation of at least one organic starting compound
    Patent number: 7518015
    Abstract: A process for heterogeneously catalyzed gas phase partial oxidation of an organic starting compound over a fixed catalyst bed freshly installed into a reaction chamber, in which the reduction in the quality of the fixed catalyst bed is restored with increasing operating time by replacing a portion of the fixed catalyst bed by a replacement fixed catalyst bed part whose volume-specific activity is lower than the volume-specific activity of the replaced fixed catalyst bed part in its freshly installed state.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: April 14, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Cremer, Ulrike Wegerle, Gerhard Laqua, Ulrich Hammon, Klaus Joachim Mueller-Engel
  • Long-term operation of a heterogeneously catalyzed gas phase partial oxidation of at least one organic compound
    Patent number: 7518016
    Abstract: A process for the long-term operation of a heterogeneously catalyzed gas phase partial oxidation of at least one organic compound over a catalyst bed, in which, in order to counteract the deactivation of the catalyst bed, the working pressure in the gas phase is increased during the operating time of the catalyst bed.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: April 14, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Dieterle, Gerhard Laqua, Klaus Joachim Mueller-Engel
  • PROCESS FOR CONTINUOUSLY REMOVING A TARGET PRODUCT X IN THE FORM OF FINE CRYSTALS
    Publication number: 20090076284
    Abstract: A process for continuously removing a target product X in the form of fine crystals from a liquid phase P comprising the target product X and constituents other than the target product X by cooling suspension crystallization in the secondary chamber, into which the liquid phase P flows continuously, of an indirect heat exchanger with simultaneous continuous flow of a coolant through the primary chamber of the indirect heat exchanger and continuous withdrawal of a crystal suspension S having a degree of crystallization Y from the secondary chamber, in which the degree of crystallization Y is adjusted on the basis of a heat balance conducted continuously with the aid of a process computer.
    Type: Application
    Filed: September 12, 2008
    Publication date: March 19, 2009
    Applicant: BASF SE
    Inventors: Joerg Heilek, Peter Schlemmer, Ulrich Hammon, Klaus Joachim Mueller-Engel
  • PROCESS FOR INTRODUCING A PORTION WITHDRAWN FROM AT LEAST ONE PRODUCTION CHARGE OF ANNULAR COATED CATALYSTS K INTO A REACTION TUBE OF A TUBE BUNDLE REACTOR
    Publication number: 20080307648
    Abstract: A process for introducing annular coated catalysts K into a reaction tube of a tube bundle reactor, in which adhering pairs of annular coated catalysts K formed in the preparation of the annular coated catalysts K, before the introduction thereof into the reaction tube, are removed at least partly from the annular coated catalysts K.
    Type: Application
    Filed: June 13, 2008
    Publication date: December 18, 2008
    Applicant: BASF SE
    Inventors: Ulrich CREMER, Hagen WILMER, Andreas RAICHLE, Hermann PETERSEN, Holger BORCHERT, Horst STRAHBERGER, Klaus Joachim MUELLER-ENGEL
  • Process for preparing at least one organic target compound by heterogeneously catalyzed gas phase partial oxidation
    Patent number: 7439389
    Abstract: A process for preparing an organic target compound by heterogeneously catalyzed gas phase partial oxidation of an organic precursor compound with molecular oxygen in two oxidation reactor lines operated in parallel and removal of the target compound from the mixture of the product gas streams in a workup line, wherein the catalyst charge of one of the oxidation lines comprises a portion of catalyst over which the heterogeneously catalyzed gas phase partial oxidation has already been carried out for longer than over the portions of catalyst of the catalyst charge of the other oxidation reactor line.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: October 21, 2008
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Dieterle, Klaus Joachim Mueller-Engel, Jochen Petzoldt, Ulrich Hammon
  • PROCESS FOR PREPARING A CATALYST CONSISTING OF A SUPPORT BODY AND A CATALYTICALLY ACTIVE COMPOSITION APPLIED ON THE SURFACE OF THE SUPPORT BODY
    Publication number: 20080214863
    Abstract: A process for preparing a coated catalyst in which a finely divided mixture of a multielement oxide comprising the elements Mo and V and a molybdenum oxide or a molybdenum oxide former is applied to the surface of a support body as an active composition.
    Type: Application
    Filed: February 28, 2008
    Publication date: September 4, 2008
    Applicant: BASF SE
    Inventors: Ulrich CREMER, Andreas Raichle, Frank Rosowski, Ulrich Hammon, Klaus Joachim Mueller-Engel
  • PROCESS FOR PREPARING SHAPED CATALYST BODIES WHOSE ACTIVE COMPOSITION IS A MULTIELEMENT OXIDE
    Publication number: 20080177105
    Abstract: A process for preparing shaped catalyst bodies whose active composition is a multielement oxide, in which a finely divided precursor mixture with addition of graphite having a specific particle size is shaped to the desired geometry and then treated thermally.
    Type: Application
    Filed: January 17, 2008
    Publication date: July 24, 2008
    Applicant: BASF SE
    Inventors: Andreas Raichle, Frank Rosowski, Sabine Huber, Ulrich Cremer, Stefan Altwasser, Klaus Joachim Mueller-Engel
  • Thermal separating process for removing at least one stream containing enriched (meth) acrylic monomers
    Patent number: 7393436
    Abstract: A thermal separating process for removing a stream containing enriched (meth)acrylic monomers from a mixture containing (meth)acrylic monomers, in which the liquid phases retained in the separating space at high temperature and high (meth)acrylic monomer content are minimized.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: July 1, 2008
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Eck, Ulrich Hammon, Klaus Joachim Mueller-Engel, Juergen Schroeder, Joachim Thiel, Hans Martan
  • Process for preparing acrolein or acrylic acid or a mixture thereof from propane
    Patent number: 7388106
    Abstract: A process for preparing acrolein or acrylic acid or a mixture thereof from propane, in which propane is dehydrogenated under heterogeneous catalysis in a reaction zone A and the propylene formed is partially oxidized heterogeneously in a reaction zone, reaction zone A being operated in loop mode and reaction gas mixture input stream A fed to the reaction zone A comprising added molecular hydrogen which is added to this input stream as late as possible.
    Type: Grant
    Filed: September 19, 2006
    Date of Patent: June 17, 2008
    Assignee: BASF Aktiengesellschaft
    Inventors: Catharina Klanner, Martin Dieterle, Goetz-Peter Schindler, Tsung-Chieh Cheng, Klaus Joachim Mueller-Engel
  • PROCESS FOR HETEROGENEOUSLY CATALYZED PARTIAL DEHYDROGENATION OF AT LEAST ONE HYDROCARBON TO BE DEHYDROGENATED
    Publication number: 20080119673
    Abstract: A process for heterogeneously catalyzed partial dehydrogenation of a hydrocarbon, in which a reaction gas mixture input stream comprising the hydrocarbon to be dehydrogenated is conducted through a fixed catalyst bed disposed in a shaft and the reaction gas mixture input stream is obtained in the shaft by metering an input gas II comprising molecular oxygen upstream of the fixed catalyst bed into an input gas stream I which comprises molecular hydrogen and the hydrocarbon to be dehydrogenated and is flowing within the shaft toward the fixed catalyst bed.
    Type: Application
    Filed: February 23, 2007
    Publication date: May 22, 2008
    Applicant: BASF Aktiengesellshaft
    Inventors: Claus HECHLER, Wilhelm Ruppel, Wolfgang Gerlinger, Wolfgang Schneider, Klaus Joachim Mueller-Engel
  • PROCESS FOR MIXING A LIQUID OR MIXTURE OF A LIQUID AND A FINE SOLID PRESENT IN AN ESSENTIALLY SELF-CONTAINING VESSEL
    Publication number: 20080074944
    Abstract: A process for mixing a liquid stored in a vessel, in which gas is sucked in from the gas phase present above the liquid interface with a suction apparatus present in the liquid, and released into it again for the gas-induced mixing of the liquid.
    Type: Application
    Filed: September 19, 2007
    Publication date: March 27, 2008
    Applicant: BASF Aktiengesellschaft
    Inventors: Michael Blechschmitt, Ulrich Hammon, Friedrich-Georg Martin, Klaus Joachim Mueller-Engel, Peter Zehner
  • Method for producing partial oxidation products and/or partial ammoxidation products of at least one olefinic hydrocarbon
    Patent number: 7348443
    Abstract: Partial oxidation products and/or ammoxidation products of an olefinic hydrocarbon A? are prepared by a process in which said olefinic hydrocarbon is produced during normal operation by partial dehydrogenation and/or oxydehydrogenation of hydrocarbon A and fed in from another source during partial or complete nonoperation of the dehydrogenation and/or oxydehydrogenation.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: March 25, 2008
    Assignee: BASF Aktiengesellschaft
    Inventors: Theo Proll, Otto Machhammer, Goetz-Peter Schindler, Klaus Joachim Mueller-Engel