Patents by Inventor Dorit RAPPOLD
Dorit RAPPOLD 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: 12076690Abstract: The invention relates to a process for removal of unwanted, in particular acidic gas constituents, for example carbon dioxide and hydrogen sulfide, from a crude synthesis gas by gas scrubbing with a scrubbing medium. According to the invention the flash gases obtained during the decompression of the laden scrubbing medium are supplied to a recompressor in order to recycle these to the crude synthesis gas and thus utilize them materially after the recompression. Alternatively or in addition the flash gases may also be supplied to a decompression turbine to recover refrigeration and mechanical work. If the recompressor and/or the decompression turbine are/is designed to have multiple stages, the flash gases obtained at different pressure levels are preferably supplied to a corresponding pressure level of the recompressor and/or of the decompression turbine.Type: GrantFiled: May 29, 2019Date of Patent: September 3, 2024Assignee: L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Alfred Gubrinski, Sharon Corbet, Dorit Rappold, Pankaj Puri
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Patent number: 12054390Abstract: The invention relates to a process for removal of unwanted, in particular acidic, gas constituents, for example carbon dioxide and hydrogen sulfide, from a crude synthesis gas containing metal carbonyls by gas scrubbing with a scrubbing medium. According to the invention water is added directly into the feed conduit of the methanol water mixture containing metal sulfides before the introduction thereof into the methanol-water separating column and/or water is injected directly into the methanol-water separating column at at least one point. This avoids deposits or encrustations of metal sulfide particles in the methanol-water separating column.Type: GrantFiled: February 22, 2019Date of Patent: August 6, 2024Assignee: L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Alfred Gubrinski, Sophia Schmidt, Dorit Rappold, Diana-Maria Gomez-Lozano
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Patent number: 11628392Abstract: An absorption column including at least one external heat exchange circuit for cooling or heating the absorption liquid, including one or more serially connected heat exchangers, wherein the junction of the pipeline for withdrawal of the absorption liquid from the column is disposed above the junction of the pipeline into the first heat exchanger in the flow direction, wherein the pipeline also includes a dumped bed.Type: GrantFiled: August 2, 2018Date of Patent: April 18, 2023Assignee: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges ClaideInventors: Sophia Schmidt, Dorit Rappold, Christian Frey, Sharon Corbet, Alfred Gubrinski
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Patent number: 11624035Abstract: The invention relates to a gas scrubbing process and plant for purifying raw synthesis gas by physical absorption in methanol. A raw synthesis gas stream which includes hydrogen and carbon monoxide as desired constituents and water and acid gases as undesired constituents is admixed with methanol and subsequently cooled below the freezing point of water. According to the invention a liquid phase including methanol and water is separated from the cooled raw synthesis gas stream. Acid gases are removed from the remaining gaseous phase by physical absorption in methanol at elevated pressure. Separating the water from the raw synthesis gas stream before the absorption of the acid gases prevents larger amounts of water passing into the methanol circuit of the gas scrubbing process. This achieves savings in resources and certain plant parts may be smaller than is customary.Type: GrantFiled: May 19, 2021Date of Patent: April 11, 2023Assignee: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges ClaudeInventors: Ganesh Arumugam, Dorit Rappold, Sharon Corbet, Robert Szabo
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Patent number: 11578284Abstract: A process and a plant for purifying a crude gas stream containing sulfur components and hydrocarbons by gas scrubbing using a scrubbing medium which is selective for sulfur components in an absorption column. Heavy hydrocarbons and heavy mercaptans are removed from the crude gas in a lower section of the absorption column and the resulting, loaded scrubbing medium stream is fed separately from the other loaded scrubbing medium streams to a hot regeneration column. A vapor stream enriched in water, hydrocarbons and sulfur components is obtained as overhead product from the hot regeneration column and this stream is cooled to below its dew point and is separated in a gas-liquid-liquid phase separation apparatus. The resulting, organic liquid phase contains heavy hydrocarbons and heavy mercaptans and can thus be discharged from the process or the plant, as a result of which accumulation thereof in the scrubbing medium is prevented.Type: GrantFiled: June 29, 2021Date of Patent: February 14, 2023Assignee: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges ClaudeInventors: Alfred Gubrinski, Dorit Rappold, Michael Wilken, Matthias Linicus
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Patent number: 11555158Abstract: The invention relates to a gas scrubbing process and a corresponding plant for removal of acidic gas constituents from crude synthesis gas which make it possible by treatment of shifted and of unshifted crude synthesis gas in the gas scrubbing process and by combination of the thus-obtained partial product streams to produce a plurality of gas products having different compositions. In addition, the invention ensures that the flash gases obtained during decompression of the laden scrubbing medium are utilized materially and/or energetically in advantageous fashion.Type: GrantFiled: May 29, 2019Date of Patent: January 17, 2023Assignee: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges ClaudeInventors: Alfred Gubrinski, Pankaj Puri, Sharon Corbet, Dorit Rappold
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Patent number: 11484826Abstract: The invention relates to a gas scrubbing process for purifying crude synthesis gas with methanol as a physical absorption medium, wherein an acid gas comprising at least hydrogen sulfide (H2S) is produced. The acid gas is produced in a hot regenerator arranged downstream of an absorption apparatus and subsequently separated from gaseous methanol in an acid gas separator by cooling and condensation. The acid gas separator has a condensation region and an absorption region, wherein both regions are separated from one another by a gas-permeable tray. This has the result that impurities such as hydrogen cyanide and/or ammonia outgassing from a first acid gas substream are not reabsorbed in the condensation region of the acid gas separator, thus avoiding an accumulation of impurities in the hot regenerator or other parts of the gas scrubbing plant. The invention further relates to an acid gas separator and to the use of the acid gas separator according to the invention in a process according to the invention.Type: GrantFiled: September 27, 2019Date of Patent: November 1, 2022Assignee: L'Air Liquide, Société Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges ClaudeInventors: Sharon Corbet, Alfred Gubrinski, Pankaj Puri, Dorit Rappold, Sophia Schmidt
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Patent number: 11400409Abstract: The invention relates to a process for aftertreatment of gas streams in which unwanted components are present in an amount that varies irregularly in a periodic manner or over time and/or in a varying concentration, by means of an absorption or gas scrubbing process. For this purpose, during the entry of the desorption peak into the gas scrubbing apparatus, the amount of scrubbing medium is increased proceeding from a normal value during a first phase and, after the end of the desorption peak, the amount of scrubbing medium is returned back to the normal value during a second phase, wherein the laden scrubbing media are collected in different intermediate vessels during the two phases, mixed and released as a mixture to a downstream scrubbing medium regeneration apparatus.Type: GrantFiled: March 8, 2019Date of Patent: August 2, 2022Assignee: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges ClaudeInventors: Alfred Gubrinski, Dorit Rappold, Michael Strozyk, Sophia Schmidt
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Publication number: 20220119254Abstract: The invention relates to a method for synthesising a hydrogen-containing compound, wherein a synthesis gas stream (1) comprising hydrogen and carbon oxides is fed to a methanol reactor arrangement (2) for partial conversion into methanol, wherein a methanol residual gas stream (3) is obtained from the methanol reactor arrangement (2), at least part of said methanol residual gas stream (3) being fed to a CO2 remover (4) from which a synthesis recycle stream (5) and a CO2 product stream (6) are obtained, said CO2 product stream (6) having a higher molar carbon dioxide content than the methanol residual gas stream (3), and wherein part of the synthesis recycle stream (5) is fed to the methanol reactor arrangement (2). The method according to the invention is characterised in that part of the synthesis recycle stream (5) is fed to a hydrogen separator (7) from which a separation stream (8) is obtained which has a higher molar hydrogen content than the synthesis recycle stream (5).Type: ApplicationFiled: December 12, 2019Publication date: April 21, 2022Inventors: Dorit RAPPOLD, Ulrich KOSS
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Publication number: 20210403822Abstract: A process and a plant for purifying a crude gas stream containing sulfur components and hydrocarbons by gas scrubbing using a scrubbing medium which is selective for sulfur components in an absorption column. Heavy hydrocarbons and heavy mercaptans are removed from the crude gas in a lower section of the absorption column and the resulting, loaded scrubbing medium stream is fed separately from the other loaded scrubbing medium streams to a hot regeneration column. A vapor stream enriched in water, hydrocarbons and sulfur components is obtained as overhead product from the hot regeneration column and this stream is cooled to below its dew point and is separated in a gas-liquid-liquid phase separation apparatus. The resulting, organic liquid phase contains heavy hydrocarbons and heavy mercaptans and can thus be discharged from the process or the plant, as a result of which accumulation thereof in the scrubbing medium is prevented.Type: ApplicationFiled: June 29, 2021Publication date: December 30, 2021Inventors: Alfred Gubrinski, Dorit Rappold, Michael Wilken, Matthias Linicus
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Publication number: 20210363443Abstract: The invention relates to a gas scrubbing process and plant for purifying raw synthesis gas by physical absorption in methanol. A raw synthesis gas stream which includes hydrogen and carbon monoxide as desired constituents and water and acid gases as undesired constituents is admixed with methanol and subsequently cooled below the freezing point of water. According to the invention a liquid phase including methanol and water is separated from the cooled raw synthesis gas stream. Acid gases are removed from the remaining gaseous phase by physical absorption in methanol at elevated pressure. Separating the water from the raw synthesis gas stream before the absorption of the acid gases prevents larger amounts of water passing into the methanol circuit of the gas scrubbing process. This achieves savings in resources and certain plant parts may be smaller than is customary.Type: ApplicationFiled: May 19, 2021Publication date: November 25, 2021Inventors: Ganesh ARUMUGAM, Dorit RAPPOLD, Sharon CORBET, Robert SZABO
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Publication number: 20210269728Abstract: The invention relates to a gas scrubbing process and a corresponding plant for removal of acidic gas constituents from crude synthesis gas which make it possible by treatment of shifted and of unshifted crude synthesis gas in the gas scrubbing process and by combination of the thus-obtained partial product streams to produce a plurality of gas products having different compositions. In addition, the invention ensures that the flash gases obtained during decompression of the laden scrubbing medium are utilized materially and/or energetically in advantageous fashion.Type: ApplicationFiled: May 29, 2019Publication date: September 2, 2021Inventors: Alfred GUBRINSKI, Pankaj PURI, Sharon CORBET, Dorit RAPPOLD
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Publication number: 20210260521Abstract: The invention relates to a process for removal of unwanted, in particular acidic gas constituents, for example carbon dioxide and hydrogen sulfide, from a crude synthesis gas by gas scrubbing with a scrubbing medium. According to the invention the flash gases obtained during the decompression of the laden scrubbing medium are supplied to a recompressor in order to recycle these to the crude synthesis gas and thus utilize them materially after the recompression. Alternatively or in addition the flash gases may also be supplied to a decompression turbine to recover refrigeration and mechanical work. If the recompressor and/or the decompression turbine are/is designed to have multiple stages, the flash gases obtained at different pressure levels are preferably supplied to a corresponding pressure level of the recompressor and/or of the decompression turbine.Type: ApplicationFiled: May 29, 2019Publication date: August 26, 2021Inventors: Alfred GUBRINSKI, Sharon CORBET, Dorit RAPPOLD, Pankaj PURI
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Publication number: 20210008490Abstract: The invention relates to a process for aftertreatment of gas streams in which unwanted components are present in an amount that varies irregularly in a periodic manner or over time and/or in a varying concentration, by means of an absorption or gas scrubbing process. For this purpose, during the entry of the desorption peak into the gas scrubbing apparatus, the amount of scrubbing medium is increased proceeding from a normal value during a first phase and, after the end of the desorption peak, the amount of scrubbing medium is returned back to the normal value during a second phase, wherein the laden scrubbing media are collected in different intermediate vessels during the two phases, mixed and released as a mixture to a downstream scrubbing medium regeneration apparatus.Type: ApplicationFiled: March 8, 2019Publication date: January 14, 2021Inventors: Alfred GUBRINSKI, Dorit RAPPOLD, Michael STROZYK, Sophia SCHMIDT
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Publication number: 20200407221Abstract: The invention relates to a process for removal of unwanted, in particular acidic, gas constituents, for example carbon dioxide and hydrogen sulfide, from a crude synthesis gas containing metal carbonyls by gas scrubbing with a scrubbing medium. According to the invention water is added directly into the feed conduit of the methanol water mixture containing metal sulfides before the introduction thereof into the methanol-water separating column and/or water is injected directly into the methanol-water separating column at at least one point. This avoids deposits or encrustations of metal sulfide particles in the methanol-water separating column.Type: ApplicationFiled: February 22, 2019Publication date: December 31, 2020Inventors: Alfred GUBRINSKI, Sophia SCHMIDT, Dorit RAPPOLD, Diana-Maria GOMEZ-LOZANO
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Patent number: 10874977Abstract: The invention relates to a process and a plant for removal of acidic gas constituents from synthesis gas by absorption in a physical scrubbing medium. A first scrubbing medium laden with at least carbon dioxide (CO2) is supplied to a decompression vessel for depressurization from a first absorption apparatus via a first feed conduit. Furthermore, a second scrubbing medium laden with at least carbon dioxide (CO2) is supplied to the decompression vessel for depressurization from a second absorption apparatus via a second feed conduit. The carbon dioxide concentration in the first laden scrubbing medium is higher than the carbon dioxide concentration in the second laden scrubbing medium.Type: GrantFiled: September 5, 2019Date of Patent: December 29, 2020Assignee: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Explotation Des Procedes Georges ClaudeInventors: Sharon Corbet, Micro Guan, Alfred Gubrinski, Dorit Rappold, Sophia Schmidt
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Publication number: 20200238213Abstract: An absorption column including at least one external heat exchange circuit for cooling or heating the absorption liquid, including one or more serially connected heat exchangers, wherein the junction of the pipeline for withdrawal of the absorption liquid from the column is disposed above the junction of the pipeline into the first heat exchanger in the flow direction, wherein the pipeline also includes a dumped bedType: ApplicationFiled: August 2, 2018Publication date: July 30, 2020Inventors: Sophia SCHMIDT, Dorit RAPPOLD, Christian FREY, Sharon CORBET, Alfred GUBRINSKI
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Publication number: 20200188838Abstract: The invention relates to a process for regenerating a laden scrubbing medium from a gas scrubbing for purifying raw synthesis gas in which the laden scrubbing medium is at least partially freed of bound gas constituents in a regeneration stage to obtain a regenerated scrubbing medium. According to the invention it is provided that after withdrawal from the regeneration stage the regenerated scrubbing medium is supplied to an intermediate vessel and the regenerated scrubbing medium is withdrawn from the intermediate vessel and supplied to an absorption apparatus for purifying raw synthesis gas.Type: ApplicationFiled: December 12, 2019Publication date: June 18, 2020Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l?Exploitation des Procedes Georges ClaudeInventors: Sophia SCHMIDT, Alfred GUBRINSKI, Christian FREY, Dorit RAPPOLD, Sharon CORBET
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Publication number: 20200101415Abstract: The invention relates to a gas scrubbing process for purifying crude synthesis gas with methanol as a physical absorption medium, wherein an acid gas comprising at least hydrogen sulfide (H2S) is produced. The acid gas is produced in a hot regenerator arranged downstream of an absorption apparatus and subsequently separated from gaseous methanol in an acid gas separator by cooling and condensation. The acid gas separator has a condensation region and an absorption region, wherein both regions are separated from one another by a gas-permeable tray. This has the result that impurities such as hydrogen cyanide and/or ammonia outgassing from a first acid gas substream are not reabsorbed in the condensation region of the acid gas separator, thus avoiding an accumulation of impurities in the hot regenerator or other parts of the gas scrubbing plant. The invention further relates to an acid gas separator and to the use of the acid gas separator according to the invention in a process according to the invention.Type: ApplicationFiled: September 27, 2019Publication date: April 2, 2020Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l?Exploitation des Procedes Georges ClaudeInventors: Sharon CORBET, Alfred GUBRINSKI, Pankaj PURI, Dorit RAPPOLD, Sophia SCHMIDT
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Publication number: 20200078723Abstract: The invention relates to a process and a plant for removal of acidic gas constituents from synthesis gas by absorption in a physical scrubbing medium. A first scrubbing medium laden with at least carbon dioxide (CO2) is supplied to a decompression vessel for depressurization from a first absorption apparatus via a first feed conduit. Furthermore, a second scrubbing medium laden with at least carbon dioxide (CO2) is supplied to the decompression vessel for depressurization from a second absorption apparatus via a second feed conduit. The carbon dioxide concentration in the first laden scrubbing medium is higher than the carbon dioxide concentration in the second laden scrubbing medium.Type: ApplicationFiled: September 5, 2019Publication date: March 12, 2020Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Sharon CORBET, Micro GUAN, Alfred GUBRINSKI, Dorit RAPPOLD, Sophia SCHMIDT