Patents by Inventor Frank Huetten
Frank Huetten 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).
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Publication number: 20230174447Abstract: Process for hydroformylation of olefins having 6 to 20 carbon atoms in the presence of a cobalt catalyst in the presence of an aqueous phase with thorough mixing in a reactor wherein a hydroformylation products-containing first stream is withdrawn at the top of the reactor and an aqueous phase-containing second stream is withdrawn from the bottom of the reactor via at least one line leading out of the bottom of the reactor, which process comprises controlling one or more mass flow parameters of the second stream in accordance with the density of the second stream.Type: ApplicationFiled: March 24, 2021Publication date: June 8, 2023Inventors: Rainer PAPP, Frank HUETTEN, Dirk JUNGMANN, Edward RICHMOND
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Patent number: 10343969Abstract: A plant (1) for recovering acrylic acid, which includes: a absorption column (201); a dissociation column (205); a first line (101) connected to the dissociation column (205); a second line (102) connecting the absorption column (201) and the dissociation column (205); a third line (103) feeding a substream of the mother acid obtained in the crystallization into the dissociation column (205); a fourth line (104) connecting the crystallization apparatus and the absorption column (201); and a fifth line (105) connecting the dissociation column (205) and the absorption column (201).Type: GrantFiled: June 7, 2017Date of Patent: July 9, 2019Assignee: BASF SEInventors: Ulrich Hammon, Thomas Walter, Markus Ottenbacher, Frank Huetten
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Publication number: 20170267621Abstract: A plant (1) for recovering acrylic acid, which includes: a absorption column (201); a dissociation column (205); a first line (101) connected to the dissociation column (205); a second line (102) connecting the absorption column (201) and the dissociation column (205); a third line (103) feeding a substream of the mother acid obtained in the crystallization into the dissociation column (205); a fourth line (104) connecting the crystallization apparatus and the absorption column (201); and a fifth line (105) connecting the dissociation column (205) and the absorption column (201).Type: ApplicationFiled: June 7, 2017Publication date: September 21, 2017Applicant: BASF SEInventors: Ulrich HAMMON, Thomas WALTER, Markus OTTENBACHER, Frank HUETTEN
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Patent number: 9701612Abstract: A process for recovering acrylic acid, including: a) division of a heated mother acid stream in direction of an absorption a condensation column and a dissociation column; b) feeding of a heated mother acid substream as runback to the dissociation column; c) feeding-in of at least one stripping gas stream to the dissociation column; d) feeding-in of a secondary component stream comprising oligomeric acrylic acid from the absorption column to the dissociation column; e) dissociation of part of oligomeric acrylic acid in the dissociation column to give monomeric acrylic acid; f) removal of secondary components comprised in the secondary component stream in the dissociation column; g) discharge of monomeric acrylic acid as gas mixture with introduced circulating stripping gas stream from the dissociation column; and h) feeding-in of the gas mixture to the absorption column.Type: GrantFiled: September 18, 2015Date of Patent: July 11, 2017Assignee: BASF SEInventors: Ulrich Hammon, Thomas Walter, Markus Ottenbacher, Frank Huetten
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Patent number: 9593065Abstract: A process for preparing acrylic acid from methanol and acetic acid, comprising (i) contacting a gaseous stream S0 comprising methanol, oxygen and inert gas with an oxidation catalyst to obtain a gaseous stream S1 comprising formaldehyde and inert gas; (ii) removing at least a portion of the inert gas present in S1 from at least a portion of the formaldehyde present in S1 by absorbing this formaldehyde in an absorbent to obtain a gaseous stream S2 comprising the portion of the inert gas removed, and to obtain a stream S3 comprising absorbent and absorbate comprising formaldehyde; (iii) optionally removing a portion or the entirety of the absorbent present in stream S3, such that a stream S3a remains from stream S3, and producing a stream S4 from at least stream S3 or stream S3a and a stream S5 comprising acetic acid; and (iv) contacting stream S4 in gaseous form with an aldol condensation catalyst to obtain a gaseous stream S6 comprising acrylic acid.Type: GrantFiled: July 9, 2015Date of Patent: March 14, 2017Assignee: BASF SEInventors: Lukas Schulz, Nicolai Tonio Woerz, Tim Blaschke, Marco Hartmann, Frank Huetten
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Publication number: 20160090347Abstract: The present invention relates to the process for recovering acrylic acid, comprising the steps a) division of a heated mother acid stream in direction of an absorption column (201) and a dissociation column (205), b) feeding of a heated mother acid substream as runback to the dissociation column (205), c) feeding-in of at least one stripping gas stream to the dissociation column (205), d) feeding-in of a secondary component stream comprising oligomeric acrylic acid from the condensation column (201) to the dissociation column (205), e) dissociation of part of oligomeric acrylic acid in the dissociation column (205) to give monomeric acrylic acid, f) removal of secondary components comprised in the secondary component stream in the dissociation column (205), g) discharge of monomeric acrylic acid as gas mixture with introduced circulating stripping gas stream from the dissociation column (205) and h) feeding-in of the gas mixture to the condensation column (201).Type: ApplicationFiled: September 18, 2015Publication date: March 31, 2016Applicant: BASF SEInventors: Ulrich HAMMON, Thomas WALTER, Markus OTTENBACHER, Frank HUETTEN
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Publication number: 20160031789Abstract: A process for preparing acrylic acid from methanol and acetic acid, comprising (i) contacting a gaseous stream S0 comprising methanol, oxygen and inert gas with an oxidation catalyst to obtain a gaseous stream S1 comprising formaldehyde and inert gas; (ii) removing at least a portion of the inert gas present in S1 from at least a portion of the formaldehyde present in S1 by absorbing this formaldehyde in an absorbent to obtain a gaseous stream S2 comprising the portion of the inert gas removed, and to obtain a stream S3 comprising absorbent and absorbate comprising formaldehyde; (iii) optionally removing a portion or the entirety of the absorbent present in stream S3, such that a stream S3a remains from stream S3, and producing a stream S4 from at least stream S3 or stream S3a and a stream S5 comprising acetic acid; and (iv) contacting stream S4 in gaseous form with an aldol condensation catalyst to obtain a gaseous stream S6 comprising acrylic acid.Type: ApplicationFiled: July 9, 2015Publication date: February 4, 2016Applicant: BASF SEInventors: Lukas SCHULZ, Nicolai Tonio Woerz, Tim Blaschke, Marco Hartmann, Frank Huetten
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Publication number: 20150344621Abstract: An aqueous solution comprising acrylic acid and the conjugate base thereof in a total amount of at least 10% by weight, based on the weight of the aqueous solution, and propionic acid and the conjugate base thereof, formic acid and the conjugate base thereof, acetic acid and the conjugate base thereof, benzoic acid and the conjugate base thereof, maleic anhydride, maleic acid and the conjugate bases thereof, phthalic anhydride, phthalic acid and the conjugate bases thereof, acrolein, benzaldehyde, 2-furaldehyde, and at least 20 mol % of at least one alkali metal cation; process for preparing this solution; and the use of this solution for preparation of polymer by free-radical polymerization.Type: ApplicationFiled: August 11, 2015Publication date: December 3, 2015Applicant: BASF SEInventors: Frank HUETTEN, Otto MACHHAMMER, Thomas DANIEL, Markus OTTENBACHER, Daniel PFEIFFER, Stefanie HERZOG, Manfred HEILIG, Klaus Joachim MUELLER-ENGEL
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Patent number: 9150483Abstract: An aqueous solution comprising acrylic acid and the conjugate base thereof in a total amount of at least 10% by weight, based on the weight of the aqueous solution, and propionic acid and the conjugate base thereof, formic acid and the conjugate base thereof, acetic acid and the conjugate base thereof, benzoic acid and the conjugate base thereof, maleic anhydride, maleic acid and the conjugate bases thereof, phthalic anhydride, phthalic acid and the conjugate bases thereof, acrolein, benzaldehyde, 2-furaldehyde, and at least 20 mol % of at least one alkali metal cation; process for preparing this solution; and the use of this solution for preparation of polymer by free-radical polymerization.Type: GrantFiled: May 30, 2012Date of Patent: October 6, 2015Assignee: BASF SEInventors: Frank Huetten, Otto Machhammer, Thomas Daniel, Markus Ottenbacher, Daniel Pfeiffer, Stefanie Herzog, Manfred Heilig, Klaus Joachim Mueller-Engel
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Publication number: 20150158011Abstract: A thermal separation process between a gas ascending in a separating column and a liquid descending in the separating column, which comprise (meth)acrylic monomers, wherein the separating column comprises a sequence of crossflow mass transfer trays, the crossflow mass transfer trays of which have passage orifices for the ascending gas in crossflow direction both in front of and beyond a downcomer for the descending liquid, and such crossflow mass transfer trays and one such crossflow mass transfer tray in a sequence of crossflow mass transfer trays present in a separating column.Type: ApplicationFiled: December 5, 2014Publication date: June 11, 2015Applicant: BASF SEInventors: Klaus Joachim Mueller-Engel, Thomas Walter, Frank Huetten, Markus Ottenbacher, Ulrich Hammon
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Patent number: 9018416Abstract: A thermal separation process between a gas ascending in a separating column and a liquid descending in the separating column, which comprise (meth)acrylic monomers, wherein the separating column comprises a sequence of crossflow mass transfer trays, the crossflow mass transfer trays of which have passage orifices for the ascending gas in crossflow direction both in front of and beyond a downcomer for the descending liquid, and such crossflow mass transfer trays and one such crossflow mass transfer tray in a sequence of crossflow mass transfer trays present in a separating column.Type: GrantFiled: March 14, 2013Date of Patent: April 28, 2015Assignee: BASF SEInventors: Klaus Joachim Mueller-Engel, Thomas Walter, Frank Huetten, Markus Ottenbacher, Ulrich Hammon
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Publication number: 20130289305Abstract: A process for preparing acrylic acid from ethanol and formaldehyde, in which, in a reaction zone A, the ethanol is partially oxidized to acetic acid in a heterogeneously catalyzed gas phase reaction, the product gas mixture A obtained and a formaldehyde source are used to obtain a reaction gas input mixture B which comprises acetic acid and formaldehyde and has the acetic acid in excess over the formaldehyde, and the formaldehyde present in reaction gas input mixture B is aldol-condensed with acetic acid present in reaction gas input mixture B to acrylic acid under heterogeneous catalysis in a reaction zone B, and unconverted acetic acid still present along-side the acrylic acid target product in the product gas mixture B obtained is removed therefrom, and the acetic acid removed is recycled into the production of reaction gas input mixture B.Type: ApplicationFiled: July 2, 2013Publication date: October 31, 2013Inventors: Stefanie HERZOG, Stefan ALTWASSER, Markus OTTENBACHER, Frank HUETTEN, Annebart Engbert WENTINK, Alexander SCHAEFER
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Publication number: 20130274519Abstract: A thermal separation process between a gas ascending in a separating column and a liquid descending in the separating column, which comprise (meth)acrylic monomers, wherein the separating column comprises a sequence of crossflow mass transfer trays, the crossflow mass transfer trays of which have passage orifices for the ascending gas in crossflow direction both in front of and beyond a downcomer for the descending liquid, and such crossflow mass transfer trays and one such crossflow mass transfer tray in a sequence of crossflow mass transfer trays present in a separating column.Type: ApplicationFiled: March 14, 2013Publication date: October 17, 2013Inventors: Klaus Joachim MUELLER-ENGEL, Thomas Walter, Frank Huetten, Markus Ottenbacher, Ulrich Hammon
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Patent number: 8507721Abstract: A process for preparing acrylic acid from ethanol and formaldehyde, in which, in a reaction zone A, the ethanol is partially oxidized to acetic acid in a heterogeneously catalyzed gas phase reaction, the product gas mixture A obtained and a formaldehyde source are used to obtain a reaction gas input mixture B which comprises acetic acid and formaldehyde and has the acetic acid in excess over the formaldehyde, and the formaldehyde present in reaction gas input mixture B is aldol-condensed with acetic acid present in reaction gas input mixture B to acrylic acid under heterogeneous catalysis in a reaction zone B, and unconverted acetic acid still present along-side the acrylic acid target product in the product gas mixture B obtained is removed therefrom, and the acetic acid removed is recycled into the production of reaction gas input mixture B.Type: GrantFiled: September 14, 2011Date of Patent: August 13, 2013Assignee: BASF SEInventors: Stefanie Herzog, Stefan Altwasser, Markus Ottenbacher, Frank Huetten, Annebart Engbert Wentink, Alexander Schaefer
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Publication number: 20130005925Abstract: An aqueous solution containing 10% by weight of acrylic acid and its conjugate base. The solution further contains, based on the amount of acrylic acid and its conjugate base: at least 50 ppm of propionic acid and its conjugate base; at least 200 ppm of formic acid and its conjugate base; at least 3000 ppm of acetic acid and it conjugate base; at most 10 ppm of benzoic acid and its conjugate base; at most 10 ppm of maleic anhydride, maleic acid, and their conjugate bases; at most 10 ppm of phthalic anhydride, phthalic acid, and their conjugate bases; at most 50 ppm of acrolein; at most 50 ppm of benzaldehyde; at most 50 ppm of 2-furaldehyde; and at least 20 mol % of at least one alkali metal cation. A process for preparing this solution and the use of this solution for preparation of a polymer by free-radical polymerization.Type: ApplicationFiled: May 30, 2012Publication date: January 3, 2013Applicant: BASF SEInventors: Frank Hütten, Otto Machhammer, Thomas Daniel, Markus Ottenbacher, Daniel Pfeiffer, Stefanie Herzog, Manfred Heilig, Klaus Joachim Muller-Engel
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Publication number: 20120071687Abstract: A process for preparing acrylic acid from ethanol and formaldehyde, in which, in a reaction zone A, the ethanol is partially oxidized to acetic acid in a heterogeneously catalyzed gas phase reaction, the product gas mixture A obtained and a formaldehyde source are used to obtain a reaction gas input mixture B which comprises acetic acid and formaldehyde and has the acetic acid in excess over the formaldehyde, and the formaldehyde present in reaction gas input mixture B is aldol-condensed with acetic acid present in reaction gas input mixture B to acrylic acid under heterogeneous catalysis in a reaction zone B, and unconverted acetic acid still present along-side the acrylic acid target product in the product gas mixture B obtained is removed therefrom, and the acetic acid removed is recycled into the production of reaction gas input mixture B.Type: ApplicationFiled: September 14, 2011Publication date: March 22, 2012Applicant: BASF SEInventors: Stefanie Herzog, Stefan Altwasser, Markus Ottenbacher, Frank Hütten, Annebart Engbert Wentink, Alexander Schäfer