Patents by Inventor Thomas Krumrey
Thomas Krumrey 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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Patent number: 11028035Abstract: The invention relates to a method for separating acetone from acetone/water mixtures, according to which a partial flow of the acetone/water mixture is concentrated in a column operating under positive pressure in order to obtain a product with an acetone concentration of at least 80 wt. %, and a partial flow of the acetone/water mixture is concentrated in a column operating under normal pressure. The top product from the column operated under positive pressure is used to heat the bottom product of the column operated under normal pressure, by means of a heat exchanger, and the top product is then introduced into the column operated under normal pressure, above the supply of the partial flow of the acetone/water mixture. This method allows the specific energy demand for acetone separation to be significantly reduced, thereby presenting considerable cost advantages. The invention also relates to a device for carrying out such a method.Type: GrantFiled: April 26, 2018Date of Patent: June 8, 2021Assignee: Rhodia Acetow GmbHInventors: Andreas Hummel, Thomas Krumrey
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Patent number: 10793305Abstract: The present invention relates to a method for producing a packed bale of highly compacted filter tow material. A compressed filter tow bale is first provided in cuboid shape in a baler. Then the compressed filter tow bale is packaged, having an air-tight packaging sleeve fully enclosing the compressed filter tow bale. According to the invention, the packaging sleeve is applied to the compressed filter tow bales such that at least 80%, preferably at least 90% and more preferably at least 95%, of the packaging sleeve is directly adjacent to the highly compacted filter tow material and touches, or is at least spaced less than 15 mm from, the highly compacted filter tow material.Type: GrantFiled: April 28, 2016Date of Patent: October 6, 2020Assignee: Rhodia Acetow GmbHInventors: Thomas Krumrey, Dietmar Kern
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Publication number: 20200140362Abstract: The invention relates to a method for separating acetone from acetone/water mixtures, according to which a partial flow of the acetone/water mixture is concentrated in a column operating under positive pressure in order to obtain a product with an acetone concentration of at least 80 wt. %, and a partial flow of the acetone/water mixture is concentrated in a column operating under normal pressure. The top product from the column operated under positive pressure is used to heat the bottom product of the column operated under normal pressure, by means of a heat exchanger, and the top product is then introduced into the column operated under normal pressure, above the supply of the partial flow of the acetone/water mixture. This method allows the specific energy demand for acetone separation to be significantly reduced, thereby presenting considerable cost advantages. The invention also relates to a device for carrying out such a method.Type: ApplicationFiled: April 26, 2018Publication date: May 7, 2020Inventors: Andreas Hummel, Thomas Krumrey
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Publication number: 20180305052Abstract: The present invention relates to a method for producing a packed bale of highly compacted filter tow material. A compressed filter tow bale is first provided in cuboid shape in a baler. Then the compressed filter tow bale is packaged, having an air-tight packaging sleeve fully enclosing the compressed filter tow bale. According to the invention, the packaging sleeve is applied to the compressed filter tow bales such that at least 80%, preferably at least 90% and more preferably at least 95%, of the packaging sleeve is directly adjacent to the highly compacted filter tow material and touches, or is at least spaced less than 15 mm from, the highly compacted filter tow material.Type: ApplicationFiled: April 28, 2016Publication date: October 25, 2018Inventors: Thomas Krumrey, Dietmar Kern
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Patent number: 10106485Abstract: The present invention concerns a process for manufacturing a fraction comprising carboxylic acid anhydride by reaction of a fraction comprising carboxylic acid with a ketene, and the use of the fraction comprising carboxylic acid anhydride in a process for acylation of polysaccharides.Type: GrantFiled: December 1, 2015Date of Patent: October 23, 2018Assignee: Rhodia Acetow GmbHInventors: Thomas Krumrey, Andreas Hummel, Dirk Hölter
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Patent number: 10017449Abstract: The present invention concerns a process for the recovery of carboxylic acid from a fraction comprising carboxylic acid and impurities, and a process for the manufacture of treated wood, which comprise the step of submitting a fraction containing carboxylic acid and impurities to a gas stripping operation.Type: GrantFiled: August 13, 2015Date of Patent: July 10, 2018Assignee: Rhodia Acetow GmbHInventors: Thomas Krumrey, Andreas Hummel, Dirk Hölter
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Patent number: 9856202Abstract: Process for the recovery of carboxylic acid, in particular acetic acid containing carboxylic anhydride in particularacetic anhydride and other impurities, which comprises: (a) treating a fraction, in particular a fraction originating from a wood treatment process, containing carboxylic acid and impurities with a metal salt in the presence of water, (b) treating at least part of the fraction obtained from step (a) to remove metal salt and, (c) treating at least part of the fraction obtained from step (b) by distillation, stripping or membrane separation to recover at least a purified carboxylic acid fraction.Type: GrantFiled: May 6, 2015Date of Patent: January 2, 2018Assignee: SOLVAY ACETOW GMBHInventors: Thomas Krumrey, Andreas Hummel
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Publication number: 20170327450Abstract: The present invention concerns a process for manufacturing a fraction comprising carboxylic acid anhydride by reaction of a fraction comprising carboxylic acid with a ketene, and the use of the fraction comprising carboxylic acid anhydride in a process for acylation of polysaccharides.Type: ApplicationFiled: December 1, 2015Publication date: November 16, 2017Applicant: SOLVAY ACETOW GmbHInventors: Thomas KRUMREY, Andreas HUMMEL, Dirk HÖLTER
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Publication number: 20170226041Abstract: The present invention concerns a process for the recovery of carboxylic acid from a fraction comprising carboxylic acid and impurities, and a process for the manufacture of treated wood, which comprise the step of submitting a fraction containing carboxylic acid and impurities to a gas stripping operation.Type: ApplicationFiled: August 13, 2015Publication date: August 10, 2017Applicant: SOLVAY ACETOW GmbHInventors: Thomas KRUMREY, Andreas HUMMEL, Dirk HÖLTER
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Publication number: 20170174605Abstract: Process for the recovery of carboxylic acid, in particular acetic acid containing carboxylic anhydride in particular acetic anhydride and other impurities, which comprises: (a) treating a fraction, in particular a fraction originating from a wood treatment process, containing carboxylic acid and impurities with a metal salt in the presence of water, (b) treating at least part of the fraction obtained from step (a) to remove metal salt and, (c) treating at least part of the fraction obtained from step (b) by distillation, stripping or membrane separation to recover at least a purified carboxylic acid fraction.Type: ApplicationFiled: May 6, 2015Publication date: June 22, 2017Applicant: SOLVAY ACETOW GmbHInventors: Thomas KRUMREY, Andreas HUMMEL
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Patent number: 9656940Abstract: The present invention relates to a process for the recovery of acetic acid. The invention more particularly relates to a process comprising a stage of liquid/liquid extraction of an aqueous solution comprising acetic acid and to a stage of distillation of the extract obtained.Type: GrantFiled: May 14, 2012Date of Patent: May 23, 2017Assignee: SOLVAY ACETOW GmbHInventors: Daniel Amoros, Mathias Brehelin, Andreas Hummel, Thomas Krumrey
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Publication number: 20150051423Abstract: The present invention relates to a process for the recovery of acetic acid. The invention more particularly relates to a process comprising a stage of liquid/liquid extraction of an aqueous solution comprising acetic acid and to a stage of distillation of the extract obtained.Type: ApplicationFiled: May 14, 2012Publication date: February 19, 2015Applicant: SOLVAY ACETOW GmbHInventors: Daniel Amoros, Mathias Brehelin, Andreas Hummel, Thomas Krumrey
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Patent number: 8769785Abstract: The invention relates to methods for simultaneously producing crimped fiber strips in parallel, in particular filter tow strips, in a crimping machine (KM) having an inlet region (3), a squeezing zone (6) formed between two transport rollers (4, 5), and a compression channel (7), comprising the following steps: a) simultaneously feeding in parallel a plurality of fiber strips (1, 2) via the inlet region (3), wherein the fiber strips are guided separately in the inlet region (3), using a first separating device (31), b) simultaneously transporting and compacting in parallel the fiber strips in the squeezing zone (6) by way of the two transport rollers (4, 5), and c) simultaneously crimping in parallel the fiber strips in the compression channel (7), wherein the fiber strips are guided separately in method step b) by using a second separating device (61) and in method step c) by using a third separating device (71), and wherein the first, second and third separating devices (31, 61, 71) are designed such that tType: GrantFiled: February 18, 2010Date of Patent: July 8, 2014Assignee: Rhodia Acetow GmbHInventors: Thomas Krumrey, Dieter Ruf, Martin Moser
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Publication number: 20120013036Abstract: The invention relates to methods for simultaneously producing crimped fibre strips in parallel, in particular filter tow strips, in a crimping machine (KM) having an inlet region (3), a squeezing zone (6) formed between two transport rollers (4, 5), and a compression channel (7), comprising the following steps: a) simultaneously feeding in parallel a plurality of fibre strips (1, 2) via the inlet region (3), wherein the fibre strips are guided separately in the inlet region (3), using a first separating device (31), b) simultaneously transporting and compacting in parallel the fibre strips in the squeezing zone (6) by way of the two transport rollers (4, 5), and c) simultaneously crimping in parallel the fibre strips in the compression channel (7), wherein the fibre strips are guided separately in method step b) by using a second separating device (61) and in method step c) by using a third separating device (71), and wherein the first, second and third separating devices (31, 61, 71) are designed such that tType: ApplicationFiled: February 18, 2010Publication date: January 19, 2012Applicant: RHODIA ACETOW GMBHInventors: Thomas Krumrey, Dieter Ruf, Martin Moser
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Patent number: 7087795Abstract: The invention relates to a hydroformylation method, whereby the homogeneous liquid reactor discharge is first supplied to a gas/liquid separator and then run through an extraction column with a counter-current of synthesis gas and finally fed to an evaporator. The invention is characterised in that the homogeneous liquid mass flow is supplied to the upper section of the extraction column at a temperature above 90° C.Type: GrantFiled: November 27, 2002Date of Patent: August 8, 2006Assignee: Celanese Chemicals Europe GmbHInventors: Thomas Krumrey, Kurt Schalapski, Robert Rapier, John Steinbach, Bak Shah, Mark Hewlett
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Publication number: 20050065379Abstract: The invention relates to a hydroformylation method, whereby the homogeneous liquid reactor discharge is first supplied to a gas/liquid separator and then run through an extraction column with a counter-current of synthesis gas and finally fed to an evaporator. The invention is characterised in that the homogeneous liquid mass flow is supplied to the upper section of the extraction column at a temperature above 90° C.Type: ApplicationFiled: November 27, 2002Publication date: March 24, 2005Applicant: Celanese Chemicals Europe GmbHInventors: Thomas Krumrey, Kurt Schalapski, Robert Rapier, John Steinbach, Bak Shah, Mark Hewlett