公开(公告)号：US20200269187A1

公开(公告)日：2020-08-27

申请号：US16643665

申请日：2018-08-30

Applicant: BASF SE ,  ExxonMobil Research and Engineering Company

Inventor： Martin ERNST ,  Gerald VORBERG ,  Thomas INGRAM ,  Georg SIEDER ,  Carla PEREIRA

IPC: B01D53/14

Abstract: An absorbent for the selective removal of hydrogen sulfide over carbon dioxide from a fluid stream, wherein the absorbent contains an aqueous solution, comprising an amine of formula (I) and/or an amine of formula (II) wherein U—V—W is CH—O—CHR5, N—CO—CHR5 or N—CO—NR5; U′—V′—W is C—O—CR5; R1 is independently C1-C5-alkyl; R2 is selected from hydrogen and C1-C5-alkyl; R3 is independently selected from hydrogen and C1-C5-alkyl; R4 is independently selected from hydrogen and C1-C5-alkyl; R5 is selected from hydrogen, C1-C5-alkyl, (C1-C5-alkoxy)-C1-C5-alkyl, and hydroxy-C1-C5-alkyl; and x is an integer from 1 to 10. The absorbent has a reduced tendency for phase separation at temperatures falling within the usual range of regeneration temperatures for the aqueous amine mixtures and a low volatility in aqueous solvents.

公开(公告)号：US20190381448A1

公开(公告)日：2019-12-19

申请号：US16484860

申请日：2018-02-09

Applicant: BASF SE ,  ExxonMobil Research and Engineering Company

Inventor： Thomas INGRAM ,  Martin ERNST ,  Gerald VORBERG ,  Alexander PANCHENKO ,  Sophia EBERT ,  Thomas Wesley HOLCOMBE ,  Michael SISKIN ,  Carla PEREIRA ,  Georg SIEDER

IPC: B01D53/14 ,  B01D53/52 ,  B01D53/78 ,  B01D53/96

Abstract: In a process for removal of acid gases from a fluid stream the fluid stream is contacted with an absorbent to obtain a treated fluid stream and a laden absorbent. The absorbent comprises a diluent and a compound of the general formula (I) wherein R1 is C1-C3-alkyl; R2 is C1-C3-alkyl; R3 is selected from hydrogen and C1-C3-alkyl; and R4 is selected from hydrogen and C1-C3-alkyl

公开(公告)号：US20200164303A1

公开(公告)日：2020-05-28

申请号：US16612921

申请日：2018-05-14

Applicant: BASF SE ,  ExxonMobil Research and Engineering Company

Inventor： Martin ERNST ,  Gerald VORBERG ,  Georg SIEDER ,  Thomas INGRAM ,  Virginia REINER ,  Carla PEREIRA ,  Michael SISKIN

IPC: B01D53/14 ,  C10L3/10 ,  C07C217/08 ,  C07C213/02

Abstract: An absorbent for the selective removal of hydrogen sulfide from a fluid stream comprising carbon dioxide and hydrogen sulfide, wherein the absorbent contains an aqueous solution, comprising: a) an amine or a mixture of amines of the general formula (I) wherein R1 is C1-C5-alkyl; R2 is C1-C5-alkyl; R3 is selected from hydrogen and C1-C5-alkyl; x is an integer from 2 to 10; and b) an ether or a mixture of ethers of the general formula (II): R4—[O—CH2—CH2]y—OH; wherein R4 is C1-C5-alkyl; and y is an integer from 2 to 10; wherein R1 and R4 are identical; wherein the mass ratio of b) to a) is from 0.08 to 0.5. The absorbent is suitable for the selective removal of hydrogen sulfide from a fluid stream comprising carbon dioxide and hydrogen sulfide. The absorbent has a reduced tendency for phase separation at temperatures falling within the usual range of regeneration temperatures for the aqueous amine mixtures and is easily obtainable.

公开(公告)号：US20190143262A1

公开(公告)日：2019-05-16

申请号：US16095970

申请日：2017-04-05

Applicant: BASF SE ,  EXXONMOBIL RESEARCH AND ENGINEERING COMPANY

Inventor： Thomas INGRAM ,  Genald VORBERGH ,  Martin ERNST ,  Carla PEREIRA ,  Michael SISKIN

IPC: B01D53/14

CPC classification number: B01D53/1493 ,  B01D53/1425 ,  B01D53/1462 ,  B01D53/1468 ,  B01D2252/20452 ,  B01D2252/20489 ,  B01D2257/304

Abstract: A process for removing acid gases from a fluid stream, wherein the fluid stream is contacted with an absorbent comprising a compound of the general formula (I), wherein R1 and R2 are independently C1-C4-alkyl; R3 is selected from hydrogen and C1-C4-alkyl, R4, R5 and R6 are independently selected from hydrogen and C1-C4-alkyl; x and y are integers from 2 to 4 and z is an integer from 1 to 3, to obtain a treated fluid stream and a laden absorbent. The process allows for a high cyclic capacity while the compounds of the absorbent have a reduced tendency to foaming and low volatility.

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

IPC: C01B17/04 ,  B01D53/14 ,  C10L3/10

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.

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.

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.

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

IPC: C10L3/10 ,  B01D53/00 ,  B01D53/14 ,  B01D5/00

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.

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

IPC: B01D53/14 ,  C10L3/10

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.

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

IPC: B01D53/14 ,  C10L3/10

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.