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公开(公告)号：US20200255291A1
公开(公告)日：2020-08-13
申请号：US15781555
申请日：2016-12-07
Applicant: BASF SE
Inventor： Thomas INGRAM , Gerald Vorgerg , George Sieder
Abstract: A process for treating an H2S- and CO2-comprising fluid stream, in which a) the fluid stream is treated in a first absorber at a pressure of 10 to 150 bar with a first substream of a regenerated H2S-selective absorbent to obtain a treated fluid stream and an H2S-laden absorbent; b) the H2S-laden absorbent is heated by indirect heat exchange with regenerated H2S-selective absorbent; c) the heated HS-laden absorbent is decompressed to a pressure of 1.2 to 10 bar in a low-pressure decompression vessel to obtain a first CO2-rich offgas and a partly regenerated absorbent; d) the partly regenerated absorbent is regenerated in a desorption column to obtain an H2S-rich offgas and regenerated absorbent; e) the H2S-rich offgas is fed to a Claus unit and the offgas from the Claus unit is fed to a hydrogenation unit to obtain hydrogenated Claus tail gas; f) the hydrogenated Claus tail gas and the first CO2-rich offgas are treated in a second absorber at a pressure of 1 to 4 bar with a second substream of the regenerated H2S-selective absorbent to obtain a second CO2-rich offgas and a second H2S-laden absorbent; and g) the second H2S-laden absorbent is guided into the first absorber. Also described is a plant suitable for performance of the process. The process is notable for a low energy requirement.
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公开(公告)号：US20190134557A1
公开(公告)日：2019-05-09
申请号：US16238069
申请日：2019-01-02
Applicant: BASF SE
Inventor： Thomas INGRAM , Ralf NOTZ , Gerald VORBERG , Georg SIEDER
IPC: B01D53/14 , C07C217/08
Abstract: A process for removing hydrogen sulfide and carbon dioxide from a fluid stream comprises a) an absorption step in which the fluid stream is contacted with an absorbent comprising an aqueous solution (i) of an amine of the general formula (I) in which R1, R2 and R3 are each independently selected from C1-4-alkyl and C1-4-hydroxyalkyl; each R4 is independently selected from hydrogen, C1-4-alkyl and C1-4-hydroxyalkyl; each R5 is independently selected from hydrogen, C1-4-alkyl and C1-4-hydroxyalkyl; X is OH or NH(CR1R2R3); m is 2, 3, 4 or 5; n is 2, 3, 4 or 5; and o is 0 or 1; and optionally (ii) at least one tertiary amine, where the molar ratio of (i) to (ii) is greater than 0.05; wherein at least 90% of the hydrogen sulfide is removed from the fluid stream and selectivity for hydrogen sulfide over carbon dioxide is not greater than 8, wherein a CO2- and H2S-laden absorbent is obtained; b) a regeneration step in which at least a substream of the CO2- and H2S-laden absorbent is regenerated and a regenerated absorbent is obtained; and c) a recycling step in which at least a substream of the regenerated absorbent is recycled into the absorption step a). The process allows a high level of hydrogen sulfide removal with a simultaneously high coabsorption of carbon dioxide.
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公开(公告)号：US20170282115A1
公开(公告)日：2017-10-05
申请号：US15506635
申请日：2015-08-20
Applicant: BASF SE
Inventor： Thomas INGRAM , Ralf NOTZ , Gerald VORBERG , Georg SIEDER
IPC: B01D53/14 , C07C217/08
CPC classification number: B01D53/1462 , B01D53/1493 , B01D2252/2026 , B01D2252/20405 , B01D2252/2041 , B01D2252/20426 , B01D2252/20431 , B01D2252/20484 , B01D2252/502 , B01D2252/504 , C07C217/08
Abstract: A process for removing hydrogen sulfide and carbon dioxide from a fluid stream comprises a) an absorption step in which the fluid stream is contacted with an absorbent comprising an aqueous solution (i) of an amine of the general formula (I) in which R1, R2 and R3 are each independently selected from C1-4-alkyl and C1-4-hydroxyalkyl; each R4 is independently selected from hydrogen, C1-4-alkyl and C1-4-hydroxyalkyl; each R5 is independently selected from hydrogen, C1-4-alkyl and C1-4-hydroxyalkyl; X is OH or NH(CR1R2R3); m is 2, 3, 4 or 5; n is 2, 3, 4 or 5; and o is 0 or 1; and optionally (ii) at least one tertiary amine, where the molar ratio of (i) to (ii) is greater than 0.05; wherein at least 90% of the hydrogen sulfide is removed from the fluid stream and selectivity for hydrogen sulfide over carbon dioxide is not greater than 8, wherein a CO2- and H2S-laden absorbent is obtained; b) a regeneration step in which at least a substream of the CO2- and H2S-laden absorbent is regenerated and a regenerated absorbent is obtained; and c) a recycling step in which at least a substream of the regenerated absorbent is recycled into the absorption step a). The process allows a high level of hydrogen sulfide removal with a simultaneously high coabsorption of carbon dioxide.
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公开(公告)号：US20210147757A1
公开(公告)日：2021-05-20
申请号：US17251001
申请日：2019-05-31
Applicant: BASF SE
Inventor： Georg SIEDER , Raquel FERNANDEZ RODILES , Thomas INGRAM
Abstract: A process for producing a deacidified fluid stream from a fluid stream comprising methanol and at least one acid gas, comprising a) an absorption step in which the fluid stream is contacted with an absorbent in an absorber to obtain an absorbent laden with methanol and acid gases and an least partly deacidified fluid stream; b) a regeneration step in which at least a portion of the laden absorbent obtained from step a) is regenerated in a regenerator to obtain an at least partly regenerated absorbent and a gaseous stream comprising methanol and at least one acid gas; c) a recycling step in which at least a substream of the regenerated absorbent from step b) is recycled into the absorption step a); d) a condensation step in which a condensate comprising methanol is condensed out of the gaseous stream from step b); wherein the regenerator additionally comprises a rescrubbing section, and the condensate from step d) is recycled into the regenerator partly in the upper region of the rescrubbing zone or above the rescrubbing zone.
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公开(公告)号：US20200030739A1
公开(公告)日：2020-01-30
申请号：US16594526
申请日：2019-10-07
Applicant: BASF SE
Inventor： Thomas INGRAM , Georg SIEDER , Torsten KATZ , Gerald VORBERG , Ralf NOTZ
Abstract: The use of an amine of the formula (I) in which the R1 to R5 radicals are each as defined in the description, and an absorbent and a process for removing acidic gases from a fluid stream, especially for selectively removing hydrogen sulfide over carbon dioxide. The invention also relates to particular amines suitable for selective removal of hydrogen sulfide. Absorbents based on amines of the formula (I) have high selectivity, high loading capacity and good regeneration capacity.
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Patent Agency Ranking
公开(公告)号：US20190126193A1
公开(公告)日：2019-05-02
申请号：US16093731
申请日：2017-04-06
Applicant: BASF SE
Inventor： Thomas INGRAM , Gerald VORBERG , Georg SIEDER
Abstract: A premixture for producing an absorbent for removing acid gases from a fluid stream containing a) at least a tertiary amine and/or a sterically hindered secondary amine; b) a dicarboxylic acid in an amount, calculated as neutralization equivalent based on the protonatable nitrogen atoms in a), of at least 30%, wherein the dicarboxylic acid has a solubility in water at a temperature of 20° C. of not more than 15 g of dicarboxylic acid per 100 g of water; and c) 20 to 80 wt % of water. Also described is a process for producing an absorbent from the premixture. The premixture is a transportable and readily handleable solution of a dicarboxylic acid having poor solubility in water for producing an absorbent for removing acid gases from a fluid stream.
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公开(公告)号：US20180221811A1
公开(公告)日：2018-08-09
申请号：US15506451
申请日：2015-08-20
Applicant: BASF SE
Inventor： Gerald VORBERG , Ralf NOTZ , Thomas INGRAM , Georg SIEDER , Torsten KATZ
CPC classification number: B01D53/1468 , B01D53/1493 , B01D2251/506 , B01D2251/512 , B01D2252/2026 , B01D2252/20405 , B01D2252/20431 , B01D2252/20484 , B01D2252/20494 , B01D2252/205 , B01D2252/504 , B01D2252/60 , C10L3/103 , C10L2200/0259 , C10L2200/0263 , C10L2200/0268 , C10L2290/06 , C10L2290/12 , C10L2290/48 , C10L2290/541 , C10L2290/545
Abstract: An absorbent for selective removal of hydrogen sulfide from a fluid stream comprises an aqueous solution of a) a tertiary amine, b) a sterically hindered secondary amine of the general formula (I) in which R1 and R2 are each independently selected from C1-4-alkyl and C1-4-hydroxyalkyl; R3, R4, R5 and R6 are each independently selected from hydrogen, C1-4-alkyl and C1-4-hydroxyalkyl, with the proviso that at least one R4 and/or R5 radical on the carbon atom bonded directly to the nitrogen atom is C1-4-alkyl or C1-4-hydroxyalkyl when R3 is hydrogen; x and y are integers from 2 to 4 and z is an integer from 1 to 4; where the molar ratio of b) to a) is in the range from 0.05 to 1.0, and c) an acid in an amount, calculated as neutralization equivalent relative to the protonatable nitrogen atoms in a) and b), of 0.05 to 15.0%. One preferred amine of the formula I is 2-(2-tert-butylaminoethoxy)ethanol. The absorbent allows a defined H2S selectivity to be set at pressures of the kind typical in natural gas processing.
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公开(公告)号：US20210213383A1
公开(公告)日：2021-07-15
申请号：US17251020
申请日：2019-05-31
Applicant: BASF SE
Inventor： Georg SIEDER , Raquel FERNANDEZ RODILES , Thomas INGRAM
Abstract: A process for producing a deacidified fluid stream from a fluid stream comprising methanol and at least one acid gas, comprising a) an absorption step in which the fluid stream is contacted with an absorbent in an absorber to obtain an absorbent laden with methanol and acid gases and an least partly deacidified fluid stream; b) a regeneration step in which at least a portion of the laden absorbent obtained from step a) is regenerated in a regenerator to obtain an at least partly regenerated absorbent and a gaseous stream comprising methanol, water and at least one acid gas; c) a recycling step in which at least a substream of the regenerated absorbent from step b) is recycled into the absorption step a); d) a condensation step in which a condensate comprising methanol and water is condensed out of the gaseous stream from step b); e) a distillation step in which at least a portion of the condensate from step d) is guided into a distillation column to obtain a top stream comprising methanol and a bottom stream comprising water; which comprises recycling at least a portion of the bottom stream from step e) into the regenerator.
An apparatus for deacidifying a fluid stream, comprising methanol and at least one acid gas, according to claim 1, comprising a) an absorber comprising an absorption zone, at least one feed for absorbent, a feed for the fluid stream to be deacidified, a liquid draw for the laden absorbent, a draw point for the deacidified fluid stream and optionally a rescrubbing zone with a feed for scrubbing agent; b) a regenerator comprising a regeneration zone, an evaporator, a feed for the laden absorbent, a liquid draw in the bottom of the regenerator and a gas draw in the top region of the regenerator; c) at least one top condenser connected to the gas draw of the regenerator, comprising a gas draw and a condensate outlet; and d) a distillation column comprising a condenser, an evaporator, a feed for the condensate outlet of the top condenser, a vapor draw in the top region of the column and a liquid draw at the bottom of the distillation column, wherein the regenerator has a feed connected to the liquid draw at the bottom of the distillation column.-
公开(公告)号：US20190256451A1
公开(公告)日：2019-08-22
申请号：US16307999
申请日：2017-06-08
Applicant: BASF SE
Inventor： Thomas INGRAM , Martin ERNST , Alexander PANCHENKO
IPC: C07C209/86 , C07D487/08
Abstract: In a process for discriminating cis- and trans-1,3-diaminocyclohexanes, a mixture of cis- and trans-1,3-diaminocyclohexanes is reacted with carbon dioxide or a reactive carbonic acid derivative and the urea of the cis-1,3-diaminocyclohexane, which can be separated off by means of a mechanical separation method, is obtained selectively. 4-Methylcyclohexane-1,3-diamine and/or 2-methylcyclohexane-1,3-diamine having a trans content of 99 mol % or more are obtainable in this way.
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公开(公告)号：US20180304191A1
公开(公告)日：2018-10-25
申请号：US15764142
申请日：2016-09-26
Applicant: BASF SE
Inventor： Thomas INGRAM , Georg SIEDER
CPC classification number: B01D53/1493 , B01D53/1425 , B01D53/1468 , B01D2252/2026 , B01D2252/2041 , B01D2252/20415 , B01D2252/20431 , B01D2252/2056 , B01D2252/40 , C10L3/10 , C10L3/101 , C10L3/102 , C10L3/103 , C10L2290/541
Abstract: An absorbent for selective removal of hydrogen sulfide from a fluid stream comprising carbon dioxide and hydrogen sulfide comprises a) an amine compound of the formula (I) in which X, R1 to R7, x, y and z are as defined in the description; and b) a nonaqueous solvent; where the absorbent comprises less than 20% by weight of water. Also described is a process for selectively removing hydrogen sulfide from a fluid stream comprising carbon dioxide and hydrogen sulfide, wherein the fluid stream is contacted with the absorbent. The absorbent features high load capacity, high cyclic capacity, good regeneration capacity and low viscosity.
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