Patents by Inventor Ulrike Wenning
Ulrike Wenning 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: 10647639Abstract: The invention relates to a method for producing butadiene from n-butenes having the steps: A) providing an n-butene-comprising feed gas stream a; B) feeding the n-butene-comprising feed gas stream a and an oxygen-comprising gas into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, wherein a product gas stream b comprising butadiene, unreacted n-butenes, steam, oxygen, low-boiling hydrocarbons, high-boiling minor components, optionally carbon oxides and optionally inert gases is obtained; Ca) cooling the product gas stream b by contacting it with a refrigerant and condensing at least a part of the high-boiling minor components; Cb) compressing the remaining product gas stream b in at least one compression step, wherein at least one aqueous condensate stream c1 and a gas stream c2 comprising butadiene, n-butenes, steam, oxygen, low-boiling hydrocarbons, optionally carbon oxides and optionally inert gases is obtained; Da) separating off non-condensable and loType: GrantFiled: January 30, 2017Date of Patent: May 12, 2020Assignees: BASF SE, Linde AGInventors: Jan Pablo Josch, Ragavendra Prasad Balegedde Ramachandran, Ulrike Wenning, Anton Wellenhofer, Christine Toegel, Hendrik Reyneke, Heinz Boelt
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Publication number: 20200039901Abstract: The invention relates to a process for preparing butadiene from n-butenes in n reactors R1 to Rn operated in parallel, wherein the process in the production phase of a reactor Rm in the n reactors comprises the steps: A) provision of a feed gas stream a1m comprising n-butenes; B) feeding of the feed gas stream a1m comprising n-butenes, an oxygen-comprising gas stream a2m and a substream d2m of an oxygen-comprising total recycle gas stream d2 into the oxidative dehydrogenation zone of the reactor and oxidative dehydrogenation of n-butenes to butadiene, giving a product gas substream bm comprising butadiene; C) combination of the product gas substream bm with further product gas substreams to form a total product gas stream b and cooling and compression of the total product gas stream b and condensation of at least part of the high-boiling secondary components, giving at least one aqueous condensate stream c1 and a gas stream c2 comprising butadiene; D) feeding of the gas stream c2 into an absorption zone anType: ApplicationFiled: March 26, 2018Publication date: February 6, 2020Inventors: Jan UNGELENK, Oliver HAMMEN, Christian WALSDORFF, Rainer ECKRICH, Heinz BOELT, Christine TOEGEL, Ulrike WENNING, Hendrik REYNEKE, Anton WELLENHOFER
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Publication number: 20190337870Abstract: Process for preparing butadiene from n-butenes, which has a start-up phase and an operating phase and the operating phase of the process comprises the steps: A) provision of a feed gas stream a1 comprising n-butenes; B) introduction of the feed gas stream a1 comprising n-butenes, an oxygen-comprising gas stream a2 and an oxygen-comprising recycle gas stream d2 into at least one oxidative dehydrogenation zone and oxidative dehydrogenation of n-butenes to butadiene, giving a product gas stream b comprising butadiene; C) cooling and compression of the product gas stream b, giving at least one aqueous condensate stream c1 and a gas stream c2 comprising butadiene; D) introduction of the gas stream c2 into an absorption zone and separation of incondensable and low-boiling gas constituents as gas stream d from the gas stream c2 by absorption of the C4 hydrocarbons in an absorption medium, giving an absorption medium stream loaded with C4 hydrocarbons and the gas stream d, and recirculation of the gas stream d as reType: ApplicationFiled: August 8, 2017Publication date: November 7, 2019Inventors: JAN UNGELENK, Oliver HAMMEN, Ulrich HAMMON, Rainer ECKRICH, Signe UNVERRICHT, Christian WALSDORFF, Heinz BOELT, Hendrik REYNEKE, Christine TOEGEL, Anton WELLENHOFER, Ulrike WENNING
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Patent number: 10421700Abstract: The invention relates to a process for producing butadiene from n-butenes which comprises the steps of: A) providing a vaporous n-butenes-comprising input gas stream a1 by evaporating a liquid n-butenes-comprising stream a0; B) introducing the vaporous n-butenes-comprising input gas stream a1 and an at least oxygenous gas into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene to obtain a product gas stream b comprising butadiene, unconverted n-butenes, steam, oxygen, low-boiling hydrocarbons, high-boiling secondary components, possibly carbon oxides and possibly inert gases, Ca) chilling the product gas stream b by contacting with a cooling medium comprising an organic solvent in at least one chilling zone, the cooling medium being at least partially recycled into the chilling zone, Cb) compressing the chilled product gas stream b which is possibly depleted of high-boiling secondary components in at least one compression stage to obtain at least one aqueous cType: GrantFiled: March 23, 2016Date of Patent: September 24, 2019Assignee: BASF SEInventors: Jan Pablo Josch, Ragavendra Prasad Balegedde Ramachandran, Christian Walsdorff, Regina Benfer, Anton Wellenhofer, Ulrike Wenning, Heinz Boelt, Hendrik Reyneke, Christine Toegel
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Patent number: 10370310Abstract: The invention relates to a method for producing butadiene from n-butenes having the steps: A) providing a feed gas stream a comprising n-butenes; B) feeding the feed gas stream a comprising the n-butenes and an oxygen-comprising gas into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, wherein a product gas stream b comprising butadiene, unreacted n-butenes, steam, oxygen, low-boiling hydrocarbons, high-boiling minor components, possibly carbon oxides and possibly inert gases is obtained; Ca) cooling the product gas stream b by contacting it with a refrigerant and condensing at least a part of the high-boiling minor components; Cb) compressing the remaining product gas stream b in at least one compression stage, wherein at least one aqueous condensate stream c1 and a gas stream c2 comprising butadiene, n-butenes, steam, oxygen, low-boiling hydrocarbons, possibly carbon oxides and possibly inert gases are obtained; Da) separating off non-condensable and low-bType: GrantFiled: January 11, 2017Date of Patent: August 6, 2019Assignees: BASF SE (ISENBRUCK BÖSL HÖRSCHLER LLP), Linde AGInventors: Jan Pablo Josch, Georgios Karanikoulis, Oliver Hammen, Claudia Mossbacher, Ulrike Wenning, Anton Wellenhofer, Christine Toegel, Hendrik Reyneke
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Patent number: 10358399Abstract: A process for preparing butadiene from n-butenes, comprising the steps of: A) providing an input gas stream comprising n-butenes; B) feeding the input gas stream comprising n-butenes and a gas containing at least oxygen into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, giving a product gas stream; Ca) cooling the product gas stream by contacting with a circulating cooling medium in at least one cooling zone; Cb) compressing the cooled product gas stream in at least one compression stage, giving at least one aqueous condensate stream c1 and one gas stream c2; D) removing uncondensable and low-boiling gas constituents comprising oxygen and low-boiling hydrocarbons as gas stream d2 from the gas stream c2 by absorbing the C4 hydrocarbons in an absorbent, giving an absorbent stream laden with C4 hydrocarbons and the gas stream d2, and then desorbing the C4 hydrocarbons from the laden absorbent stream, giving a C4 product gas stream d1; E) separating the C4Type: GrantFiled: November 2, 2015Date of Patent: July 23, 2019Assignees: BASF SE, Linde AGInventors: Philipp Grüne, Stephan Deublein, Christian Walsdorff, Jan Pablo Josch, Rainer Rahm, Hendrik Reyneke, Anton Wellenhofer, Ulrike Wenning, Christine Toegel, Heinz Boelt
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Patent number: 10308569Abstract: The invention relates to a process for preparing butadiene from n-butenes, comprising the steps of: A) providing an input gas stream a comprising n-butenes, B) feeding the input gas stream a comprising n-butenes and a gas containing at least oxygen into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, giving a product gas stream b comprising butadiene, unconverted n-butenes, water vapor, oxygen, low-boiling hydrocarbons and high-boiling secondary components, with or without carbon oxides and with or without inert gases; Ca) cooling the product gas stream b by contacting with a cooling medium in at least one cooling zone, the cooling medium being at least partly recycled and having an aqueous phase and an organic phase, Cb) compressing the cooled product gas stream b which may have been depleted of high-boiling secondary components in at least one compression stage, giving at least one aqueous condensate stream c1 and one gas stream c2 comprising butadiene, nType: GrantFiled: September 14, 2015Date of Patent: June 4, 2019Assignees: BASF SE, Linde AGInventors: Jan Pablo Josch, Philipp Grüne, Regina Benfer, Maximilian Vicari, Andre Biegner, Gergor Bloch, Heinz Boelt, Hendrik Reyneke, Christine Toegel, Ulrike Wenning
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Publication number: 20190039971Abstract: The invention relates to a method for producing butadiene from n-butenes having the steps: A) providing an n-butene-comprising feed gas stream a; B) feeding the n-butene-comprising feed gas stream a and an oxygen-comprising gas into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, wherein a product gas stream b comprising butadiene, unreacted n-butenes, steam, oxygen, low-boiling hydrocarbons, high-boiling minor components, optionally carbon oxides and optionally inert gases is obtained; Ca) cooling the product gas stream b by contacting it with a refrigerant and condensing at least a part of the high-boiling minor components; Cb) compressing the remaining product gas stream b in at least one compression step, wherein at least one aqueous condensate stream c1 and a gas stream c2 comprising butadiene, n-butenes, steam, oxygen, low-boiling hydrocarbons, optionally carbon oxides and optionally inert gases is obtained; Da) separating off non-condensable and loType: ApplicationFiled: January 30, 2017Publication date: February 7, 2019Inventors: JAN Pablo JOSCH, Ragavendra Prasad BALEGEDDE RAMACHANDRAN, Ulrike WENNING, Anton WELLENHOFER, Christine TOEGEL, Hendrik REYNEKE, Heinz BOELT
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Publication number: 20190016650Abstract: The invention relates to a method for producing butadiene from n-butenes having the steps: A) providing a feed gas stream a comprising n-butenes; B) feeding the feed gas stream a comprising the n-butenes and an oxygen-comprising gas into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, wherein a product gas stream b comprising butadiene, unreacted n-butenes, steam, oxygen, low-boiling hydrocarbons, high-boiling minor components, possibly carbon oxides and possibly inert gases is obtained; Ca) cooling the product gas stream b by contacting it with a refrigerant and condensing at least a part of the high-boiling minor components; Cb) compressing the remaining product gas stream b in at least one compression stage, wherein at least one aqueous condensate stream c1 and a gas stream c2 comprising butadiene, n-butenes, steam, oxygen, low-boiling hydrocarbons, possibly carbon oxides and possibly inert gases are obtained; Da) separating off non-condensable and low-bType: ApplicationFiled: January 11, 2017Publication date: January 17, 2019Applicants: BASF SE, Linde AGInventors: Jan Pablo JOSCH, Georgios KARANIKOULIS, Oliver HAMMEN, Claudia MOSSBACHER, Ulrike WENNING, Anton WELLENHOFER, Christine TOEGEL, Hendrik REYNEKE
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Publication number: 20180354872Abstract: A) provision of a feed gas stream a comprising n-butenes; B) introduction of the feed gas stream a comprising n-butenes and an oxygen-comprising gas into a dehydrogenation reactor and oxidative dehydrogenation of n-butenes to butadiene; C) cooling and compression of the product gas stream b in at least one cooling stage comprising a quenching column and in a compression stage comprising a compressor, with the product gas stream b being brought into contact with at least one circulated coolant; D) separation of incondensable and low-boiling gas constituents as gas stream d2 from the gas stream c2 by absorption of the C4-hydrocarbons in at least one circulated absorption medium; E) separation of the C4 product stream d1 by extractive distillation using a solvent which is selective for butadiene into a stream e1 comprising butadiene and the selective solvent and a stream e2 comprising n-butenes; F) distillation of the stream e1 comprising butadiene and the selective solvent to give a stream f1 consisting essentiType: ApplicationFiled: December 2, 2016Publication date: December 13, 2018Inventors: Jan Pablo JOSCH, Ragavendra Prasad BALEGEDDE RAMACHANDRAN, Philipp GRUENE, Steffan RISSEL, Martin GEMBALA, Ulrike WENNING, Anton WELLENHOFER, Christine TOEGEL, Hendrik REYNEKE
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Patent number: 9957208Abstract: The invention relates to a process for preparing butadiene from n-butenes, comprising the steps of: A) providing an input gas stream a comprising n-butenes, B) feeding the input gas stream a comprising n-butenes and a gas containing at least oxygen into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, giving a product gas stream b comprising butadiene, unconverted n-butenes, water vapor, oxygen, low-boiling hydrocarbons and high-boiling secondary components, with or without carbon oxides and with or without inert gases; Ca) cooling the product gas stream b by contacting with a cooling medium in at least one cooling zone, the cooling medium being at least partly recycled and having an aqueous phase and an organic phase of an organic solvent, wherein the organic solvent is selected from the group consisting of toluene, o-, m- and p-xylene, mesitylene, mono-, di- and triethylbenzene, mono-, di- and triisopropylbenzene and mixtures thereof, and the mass ratio ofType: GrantFiled: August 11, 2015Date of Patent: May 1, 2018Assignees: BASF SE, Linde AGInventors: Philipp Grüne, Oliver Hammen, Rainer Eckrich, Jan Pablo Josch, Christian Walsdorff, Andre Biegner, Gregor Bloch, Heinz Boelt, Hendrik Reyneke, Christine Toegel, Ulrike Wenning
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Publication number: 20180105479Abstract: The invention relates to a process for producing butadiene from n-butenes which comprises the steps of: A) providing a vaporous n-butenes-comprising input gas stream a1 by evaporating a liquid n-butenes-comprising stream a0; B) introducing the vaporous n-butenes-comprising input gas stream a1 and an at least oxygenous gas into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene to obtain a product gas stream b comprising butadiene, unconverted n-butenes, steam, oxygen, low-boiling hydrocarbons, high-boiling secondary components, possibly carbon oxides and possibly inert gases, Ca) chilling the product gas stream b by contacting with a cooling medium comprising an organic solvent in at least one chilling zone, the cooling medium being at least partially recycled into the chilling zone, Cb) compressing the chilled product gas stream b which is possibly depleted of high-boiling secondary components in at least one compression stage to obtain at least one aqueous cType: ApplicationFiled: March 23, 2016Publication date: April 19, 2018Inventors: Jan Pablo JOSCH, Ragavendra Prasad BALEGEDDE RAMACHANDRAN, Christian Walsdorff, Regina BENFER, Anton WELLENHOFER, Ulrike WENNING, Heinz BOELT, Hendrik REYNEKE, Christine TOEGEL
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Publication number: 20180072638Abstract: The invention relates to a process for producing butadiene from n-butenes, comprising the steps of: A) providing an n-butenes-comprising input gas stream a1, B) feeding the n-butenes-comprising input gas stream al, an oxygenous gas and an oxygenous cycle gas stream a2 into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene to obtain a product gas stream b comprising butadiene, unconverted n-butenes, steam, oxygen, low-boiling hydrocarbons, high-boiling secondary components, possibly carbon oxides and possibly inert gases, Ca) cooling down the product gas stream b and optionally at least partially removing high-boiling secondary components and steam to obtain a product gas stream b?, Cb) compressing and cooling the product gas stream b? in at least one compression and cooling stage to obtain at least one aqueous condensate stream c1 and one gas stream c2 comprising butadiene, n-butenes, steam, oxygen, low-boiling hydrocarbons, possibly carbon oxides and possiblType: ApplicationFiled: March 14, 2016Publication date: March 15, 2018Inventors: Jan Pablo JOSCH, Stephan DEUBLEIN, Regina BENFER, Friedemann GAITZSCH, Hendrik REYNEKE, Christine TOEGEL, Ulrike WENNING, Anton WELLENHOFER, Heinz BOELT
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Publication number: 20180002254Abstract: The invention relates to a process for preparing butadiene from n-butenes, comprising the steps of: A) providing an input gas stream a comprising n-butenes, B) feeding the input gas stream a comprising n-butenes and a gas containing at least oxygen into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, giving a product gas stream b comprising butadiene, unconverted n-butenes, water vapor, oxygen, low-boiling hydrocarbons and high-boiling secondary components, with or without carbon oxides and with or without inert gases; Ca) cooling the product gas stream b by contacting with a cooling medium in at least one cooling zone, the cooling medium being at least partly recycled and having an aqueous phase and an organic phase, Cb) compressing the cooled product gas stream b which may have been depleted of high-boiling secondary components in at least one compression stage, giving at least one aqueous condensate stream c1 and one gas stream c2 comprising butadiene, nType: ApplicationFiled: September 14, 2015Publication date: January 4, 2018Inventors: Jan Pablo JOSCH, Philipp GRÜNE, Regina BENFER, Maximilian VICARI, Andre BIEGNER, Gergor BLOCH, Heinz BOELT, Hendrik REYNEKE, Christine TOEGEL, Ulrike WENNING
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Publication number: 20170334809Abstract: A process for preparing butadiene from n-butenes, comprising the steps of: A) providing an input gas stream comprising n-butenes; B) feeding the input gas stream comprising n-butenes and a gas containing at least oxygen into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, giving a product gas stream; Ca) cooling the product gas stream by contacting with a circulating cooling medium in at least one cooling zone; Cb) compressing the cooled product gas stream in at least one compression stage, giving at least one aqueous condensate stream c1 and one gas stream c2; D) removing uncondensable and low-boiling gas constituents comprising oxygen and low-boiling hydrocarbons as gas stream d2 from the gas stream c2 by absorbing the C4 hydrocarbons in an absorbent, giving an absorbent stream laden with C4 hydrocarbons and the gas stream d2, and then desorbing the C4 hydrocarbons from the laden absorbent stream, giving a C4 product gas stream d1; E) separating the C4Type: ApplicationFiled: November 2, 2015Publication date: November 23, 2017Inventors: Philipp GRUNE, Stephan DEUBLEIN, Christian WALSDORFF, Jan Pablo JOSCH, Rainer RAHM, Hendrik REYNEKE, Anton WELLENHOFER, Ulrike WENNING, Christine TOEGEL, Heinz BOELT
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Publication number: 20170233313Abstract: The invention relates to a process for preparing butadiene from n-butenes, comprising the steps of: A) providing an input gas stream a comprising n-butenes, B) feeding the input gas stream a comprising n-butenes and a gas containing at least oxygen into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, giving a product gas stream b comprising butadiene, unconverted n-butenes, water vapor, oxygen, low-boiling hydrocarbons and high-boiling secondary components, with or without carbon oxides and with or without inert gases; Ca) cooling the product gas stream b by contacting with a cooling medium in at least one cooling zone, the cooling medium being at least partly recycled and having an aqueous phase and an organic phase of an organic solvent, wherein the organic solvent is selected from the group consisting of toluene, o-, m- and p-xylene, mesitylene, mono-, di- and triethylbenzene, mono-, di- and triisopropylbenzene and mixtures thereof, and the mass ratio ofType: ApplicationFiled: August 11, 2015Publication date: August 17, 2017Inventors: Philipp GRÜNE, Oliver HAMMEN, Rainer ECKRICH, Jan Pablo JOSCH, Christian WALSDORFF, Andre BIEGNER, Gergor BLOCH, Heinz BOELT, Hendrik REYNEKE, Christine TOEGEL, Ulrike WENNING
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Patent number: 8480985Abstract: A method and device for the catalytic decomposition of laughing gas in a laughing-gas-bearing gas. The method includes diluting the laughing-gas-bearing gas with a diluting gas, while forming a laughing-gas-bearing charge gas. The laughing-gas bearing charge gas is passed through a heat-exchange step where heat exchange occurs with an exhaust. A heating step occurs for occasional heating of the laughing-gas-bearing charge gas in a fixed-bed reactor for catalytic decomposition of the laughing gas. In some embodiments the diluting gas is dried, and at least a part of the exhaust from the catalytic decomposition of the laughing gas is mixed with the laughing-gas-bearing charge gas upstream of the catalytic decomposition of the laughing gas.Type: GrantFiled: January 5, 2010Date of Patent: July 9, 2013Assignee: Linde AktiengesellschaftInventors: Ulrike Wenning, Hans-Jörg Zander, Anton Wellenhofer, Karl-Heinz Hofmann, Wibke Korn, Franz Beran, Nicole Schödel, Wolfgang Schmehl
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Patent number: 8460627Abstract: A device and method for the decomposition of laughing gas including a gas inlet for supplying a laughing-gas-bearing gas; a first heat-exchanger for the exchange of heat between an exhaust and the laughing-gas-bearing gas; a heating device for occasional heating of the laughing-gas-bearing gas and a fixed-bed reactor in which a catalyst is included in order to decompose the laughing gas. The device also includes a gas outlet, through which exhaust leaving the fixed-bed reactor can be taken away through the heat exchanger. The device may be used to implement a method where the catalyst for decomposition of laughing gas is maintained at temperatures below 800° C. and in which the fixed-bed reactor is arranged as an adiabatic reactor.Type: GrantFiled: January 5, 2010Date of Patent: June 11, 2013Assignee: Linde AktiengesellschaftInventors: Franz Beran, Karl-Heinz Hofmann, Nicole Schödel, Wolfgang Schmehl, Ulrike Wenning, Hans-Jörg Zander
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Publication number: 20120063982Abstract: The laughing-gas-containing gas (1) is diluted by means of a diluting gas (2). The diluting gas (2) is virtually free from water fractions in the dryer (3). After feed of the diluting gas (2) via the feed line (13), exhaust gas (8) from the catalytic decomposition (7) is added (4) to the laughing-gas-containing feed gas (12). After addition (4) of the exhaust gas (8) from the catalytic decomposition of laughing gas (7), the laughing-gas-containing feed gas (12) is compressed (5) and passed to the heat exchanger (6). In the heat exchanger (6) the laughing-gas-containing feed gas (12) is preheated by heat exchange with the exhaust gas (8). The exhaust gas (8) is cooled in the heat exchanger (6) in this process. The preheated laughing-gas-containing feed gas (12) is passed via a further optional heater (11) as a feed to the catalytic laughing gas decomposition (7). In order to avoid a concentration build-up, some of the exhaust gas (8) is passed out (9) of the process.Type: ApplicationFiled: January 5, 2010Publication date: March 15, 2012Applicant: LINDE AKTIENGESELLSCHAFTInventors: Ulrike Wenning, Hans-Jörg Zander, Anton Wellenhofer, Karl-Heinz Hofmann, Wibke Korn, Franz Beran, Nicole Schödel, Wolfgang Schmehl
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Publication number: 20120014855Abstract: The invention relates to an apparatus and to a process for decomposing dinitrogen monoxide. The apparatus comprises a gas inlet 1 for supplying a nitrogen monoxide-containing gas, a first heat exchange medium 3 for exchanging heat between an offgas and the nitrogen monoxide-containing gas, a heating apparatus 4 for occasional heating of the nitrogen monoxide-containing gas, a fixed bed reactor 5 in which a catalyst is accommodated, in order to decompose the dinitrogen monoxide in the dinitrogen monoxide-containing gas, a gas outlet through which the offgas leaving the fixed bed reactor can be conducted out via the heat exchange medium 3. According to the invention, the catalyst is suitable for decomposing dinitrogen monoxide at temperatures below 800° C., especially preferably below 450° C., more preferably below 400° C. The fixed bed reactor 5 is configured for operation in an adiabatic state.Type: ApplicationFiled: January 5, 2010Publication date: January 19, 2012Applicant: LINDE AKTIENGESELLSCHAFTInventors: Franz Beran, Karl-Heinz Hofmann, Nicole Schödel, Wolfgang Schmehl, Ulrike Wenning, Hans-Jörg Zander