Patents by Inventor Klaus Kindler
Klaus Kindler 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: 7462277Abstract: In a continuous process for fractionating a C4 fraction (C4) by extractive distillation using a selective solvent (LM) in an extractive distillation column (EDK), it is proposed that a dividing wall (TW) is installed in the longitudinal direction in the extractive distillation column (EDK) to form a first region (A), a second region (B) and a lower combined column region (C) and a top stream (C4H10) comprising the butanes is taken off from the first region (A), a top stream (C4H8) comprising the butenes is taken off from the second region (B) and a stream (C4H6) comprising the hydrocarbons from the C4 fraction which are more soluble in the selective solvent (LM) than are the butanes and the butenes is taken off from the lower combined column region (C).Type: GrantFiled: July 22, 2003Date of Patent: December 9, 2008Assignee: BASF AktiengesellschaftInventors: Till Adrian, Thomas Hill, Klaus Kindler, Bernd Heida
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Patent number: 7432411Abstract: A continuous process for isolating butenes from a C4 fraction comprising butanes, butenes and other C3-C5-hydrocarbons by extractive distillation using a selective solvent (LM), comprising a first process stage I in a scrubbing zone (E) and a second process stage II in a degassing zone (A), wherein the liquid or a substream of the liquid is taken off from the degassing zone (A) at a theoretical plate located one or more theoretical plates below the feed point for the bottom stream (LM/C4H8) from the scrubbing zone (E), heated and/or vaporized by indirect heat exchange with the hot bottom stream (LM) from the degassing zone (A) and returned to the degassing zone (A) at the same theoretical plate or above this, with the theoretical plate from which the liquid or substream of liquid is taken off being selected so that the total energy requirement in the process stages I and II is minimized, is proposed.Type: GrantFiled: April 29, 2003Date of Patent: October 7, 2008Assignee: BASF AktiengesellschaftInventors: Till Adrian, Bernd Heida, Klaus Kindler
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Patent number: 7393992Abstract: Sudstituted the abstract with a new abstract as follows: The invention relates to a continuous process for separation a mixture of hydrocarbons which has beenobtained by extractive distillation of C4 fraction useing a selective solvent and the hydrocarbons from the fraction C4 which are more readily soluble in the selective solvent than are the butanes and the butenes. The mixture is fed into a first distillation column in which it is separated into a steam which is taken off at the top and comprises 1,3-butadiene, propyne, possibly further low boilers and possibly water and a bottom stream comprising 1,3-butadiene, 1,2-butadiene, acetylenes and possibly further high boilers, with the proportion of 1,3-butadiene in the bottom stream from the distillatin column being regulated in such a way that it is at least sufficiently high to dilute the acetylenes to outside the range in which there is a risk of spontaneous decomposition.Type: GrantFiled: July 23, 2003Date of Patent: July 1, 2008Assignee: BASF AktiengesellschaftInventors: Thomas Hill, Klaus Kindler, Bernd Heida
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Patent number: 7226527Abstract: A process for recovering crude 1,3-butadiene from a C4 fraction by extractive distillation using a selective solvent in a dividing wall column (TK) in which a dividing wall (T) is arranged in the longitudinal direction of the column to form a first subregion (A), a second subregion (B) and a lower common column region (C) and which is preceded by an extractive scrubbing column (K) is proposed.Type: GrantFiled: February 6, 2002Date of Patent: June 5, 2007Assignee: BASF AktiengesellschaftInventors: Gerd Bohner, Klaus Kindler, Melanie Pahl, Gerd Kaibel
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Patent number: 7132038Abstract: A process for obtaining pure 1,3-butadiene from crude 1,3-butadiene by distillation is carried out in a dividing wall column in which a dividing wall is located in the longitudinal direction of the column to form an upper common column region, a lower common column region, a feed section and an offtake section.Type: GrantFiled: November 15, 2001Date of Patent: November 7, 2006Assignee: BASF AktiengesellschaftInventors: Gerd Bohner, Klaus Kindler, Melanie Pahl, Gerd Kaibel
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Publication number: 20060021911Abstract: In a continuous process for fractionating a C4 fraction (C4) by extractive distillation using a selective solvent (LM) in an extractive distillation column (EDK), it is proposed that a dividing wall (TW) is installed in the longitudinal direction in the extractive distillation column (EDK) to form a first region (A), a second region (B) and a lower combined column region (C) and a top stream (C4H10) comprising the butanes is taken off from the first region (A), a top stream (C4H8) comprising the butenes is taken off from the second region (B) and a stream (C4H6) comprising the hydrocarbons from the C4 fraction which are more soluble in the selective solvent (LM) than are the butanes and the butenes is taken off from the lower combined column region (C).Type: ApplicationFiled: July 22, 2003Publication date: February 2, 2006Inventors: Till Adrian, Thomas Hill, Klaus Kindler, Hernd Heida
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Publication number: 20050240071Abstract: The invention relates to a continuous process for separating a mixture of hydrocarbons which has been obtained by extractive distillation of a C4 fraction (C4) using a selective solvent (LM) and comprises the hydrocarbons from the C4 fraction (C4) which are more readily soluble in the selective solvent (LM) than are the butanes and the butenes. The mixture is fed into a first distillation column (K I) in which it is separated into a stream (K I-K) which is taken off at the top and comprises 1,3-butadiene, propyne, possibly further low boilers and possibly water and a bottom stream (K I-S) comprising 1,3-butadiene, 1,2-butadiene, acetylenes and possibly further high boilers, with the proportion of 1,3-butadiene in the bottom stream (K I-S) from the distillation column (K I) being regulated in such a way that it is at least sufficiently high to dilute the acetylenes to outside the range in which there is a risk of spontaneous decomposition.Type: ApplicationFiled: July 23, 2003Publication date: October 27, 2005Applicant: BASF AktiengesellschaftInventors: Thomas HiIl, Klaus Kindler, Bernd Heida
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Publication number: 20050154246Abstract: A continuous process for isolating butenes from a C4 fraction comprising butanes, butenes and other C3-C5-hydrocarbons by extractive distillation using a selective solvent (LM), comprising a first process stage I in a scrubbing zone (E) and a second process stage II in a degassing zone (A), wherein the liquid or a substream of the liquid is taken off from the degassing zone (A) at a theoretical plate located one or more theoretical plates below the feed point for the bottom stream (LM/C4H8) from the scrubbing zone (E), heated and/or vaporized by indirect heat exchange with the hot bottom stream (LM) from the degassing zone (A) and returned to the degassing zone (A) at the same theoretical plate or above this, with the theoretical plate from which the liquid or substream of liquid is taken off being selected so that the total energy requirement in the process stages I and II is minimized, is proposed.Type: ApplicationFiled: April 29, 2003Publication date: July 14, 2005Applicant: Basf AktiengesellschaftInventors: Till Adrian, Bernd Heida, Klaus Kindler
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Publication number: 20040065538Abstract: A process for recovering crude 1,3-butadiene from a C4 fraction by extractive distillation using a selective solvent in a dividing wall column (TK) in which a dividing wall (T) is arranged in the longitudinal direction of the column to form a first subregion (A), a second subregion (B) and a lower common column region (C) and which is preceded by an extractive scrubbing column (K) is proposed.Type: ApplicationFiled: August 8, 2003Publication date: April 8, 2004Inventors: Gerd Bohner, Klaus Kindler, Melanie Pahl, Gerd Kaibel
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Publication number: 20040045804Abstract: A process for obtaining pure 1,3-butadiene from crude 1,3-butadiene by distillation is carried out in a dividing wall column in which a dividing wall is located in the longitudinal direction of the column to form an upper common column region, a lower common column region, a feed section and an offtake section.Type: ApplicationFiled: October 14, 2003Publication date: March 11, 2004Inventors: Gerd Bohner, Klaus Kindler, Melanie Pahl, Gerd Kaibel
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Publication number: 20030181772Abstract: In a process for the work-up of a C4 fraction, comprising the process stepsType: ApplicationFiled: November 12, 2002Publication date: September 25, 2003Inventors: Gerald Meyer, Gerd Kaibel, Gerd Bohner, Klaus Kindler, Till Adrian, Karin Pickenaecker, Melanie Pahl, Thomas Hill
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Patent number: 6337429Abstract: A C4-hydrocarbon mixture essentially containing 1,3-butadiene, butenes, butanes and other C4-hydrocarbons is separated into at least 4 fractions, a) the fraction (a) essentially comprising 1,3-butadiene, b) the fraction (b) essentially comprising butenes, c) the fraction (c) essentially comprising butanes and d) one or more fractions (d) essentially comprising 1,3-butadiene and the other C4-hydrocarbons, by extractive distillation by means of N-methyl-2-pyrrolidinone or an aqueous solution of N-methyl-2-pyrrolidinone (NMP).Type: GrantFiled: October 27, 2000Date of Patent: January 8, 2002Assignee: BASF AktiengesellschaftInventors: Klaus Kindler, Hubert Puhl