公开(公告)号：US11458433B2

公开(公告)日：2022-10-04

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：US11241652B2

公开(公告)日：2022-02-08

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 ,  C07C13/02 ,  C07C17/08 ,  C10L3/10 ,  C07C213/02 ,  C07C217/08

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：US11173446B2

公开(公告)日：2021-11-16

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：US10525404B2

公开(公告)日：2020-01-07

申请号：US16095970

申请日：2017-04-05

Applicant: BASF SE ,  ExxonMobil Research and Engineering Company

Inventor： Thomas Ingram ,  Gerald Vorberg ,  Martin Ernst ,  Carla Pereira ,  Michael Siskin

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

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：US20180229180A1

公开(公告)日：2018-08-16

申请号：US15955182

申请日：2018-04-17

Applicant: ExxonMobil Research and Engineering Company ,  BASF

Inventor： Carla S. Pereira ,  Michael Siskin ,  Thomas Ingram ,  Gerald Vorberg ,  Martin Ernst

IPC: B01D53/14 ,  B01D53/18 ,  C10L3/10

CPC classification number: B01D53/1493 ,  B01D53/1425 ,  B01D53/1468 ,  B01D53/18 ,  B01D2252/204 ,  B01D2252/20431 ,  B01D2252/20478 ,  B01D2252/20489 ,  B01D2257/304 ,  B01D2257/504 ,  C10L3/10 ,  C10L3/103 ,  C10L2290/542 ,  Y02C10/06

Abstract: A process for selectively separating H2S from a gas mixture which also comprises CO2 is disclosed. A stream of the gas mixture is contacted with an absorbent solution comprising one or more amines, alkanolamines, hindered alkanolamines, capped alkanolamines, or mixtures thereof. The H2S/CO2 selectivity of the absorbent solution is preferably greater than about 4.0 for an acid gas loading [mol(CO2+H2S)/mol(amine)] between about 0.2 and about 0.6, and is achieved by reducing pH of the absorbent solution.

公开(公告)号：US20220126235A1

公开(公告)日：2022-04-28

申请号：US17537654

申请日：2021-11-30

Applicant: ExxonMobil Research and Engineering Company ,  BASF

Inventor： Carla S. Pereira ,  Michael Siskin ,  Thomas Ingram ,  Gerald Vorberg ,  Martin Ernst

IPC: B01D53/14 ,  C10L3/10 ,  B01D53/18

Abstract: A process for selectively separating H2S from a gas mixture which also comprises CO2is disclosed. A stream of the gas mixture is contacted with an absorbent solution comprising one or more amines, alkanolamines, hindered alkanolamines, capped alkanolamines, or mixtures thereof. The H2S/CO2 selectivity of the absorbent solution is preferably greater than about 4.0 for an acid gas loading [mol(CO2+H2S)/mol(amine)] between about 0.2 and about 0.6, and is achieved by reducing pH of the absorbent solution.

公开(公告)号：US11185813B2

公开(公告)日：2021-11-30

申请号：US15955182

申请日：2018-04-17

Applicant: ExxonMobil Research and Engineering Company ,  BASF

Inventor： Carla S. Pereira ,  Michael Siskin ,  Thomas Ingram ,  Gerald Vorberg ,  Martin Ernst

IPC: B01D53/52 ,  B01D53/14 ,  B01D53/78 ,  C10L3/10 ,  B01D53/18

Abstract: A process for selectively separating H2S from a gas mixture which also comprises CO2 is disclosed. A stream of the gas mixture is contacted with an absorbent solution comprising one or more amines, alkanolamines, hindered alkanolamines, capped alkanolamines, or mixtures thereof. The H2S/CO2 selectivity of the absorbent solution is preferably greater than about 4.0 for an acid gas loading [mol(CO2+H2S)/mol(amine)] between about 0.2 and about 0.6, and is achieved by reducing pH of the absorbent solution.

公开(公告)号：US09962644B2

公开(公告)日：2018-05-08

申请号：US14980634

申请日：2015-12-28

Applicant: ExxonMobil Research and Engineering Company ,  BASF

Inventor： Carla S. Pereira ,  Michael Siskin ,  Thomas Ingram ,  Gerald Vorberg ,  Martin Ernst

IPC: B01D53/52 ,  B01D53/78 ,  B01D53/14 ,  B01D53/18 ,  C10L3/10

CPC classification number: B01D53/1493 ,  B01D53/1425 ,  B01D53/1468 ,  B01D53/18 ,  B01D2252/204 ,  B01D2252/20431 ,  B01D2252/20478 ,  B01D2252/20489 ,  B01D2257/304 ,  B01D2257/504 ,  C10L3/10 ,  C10L3/103 ,  C10L2290/542

Abstract: A process for selectively separating H2S from a gas mixture which also comprises CO2 is disclosed. A stream of the gas mixture is contacted with an absorbent solution comprising one or more amines, alkanolamines, hindered alkanolamines, capped alkanolamines, or mixtures thereof. The H2S/CO2 selectivity of the absorbent solution is preferably greater than about 4.0 for an acid gas loading [mol(CO2+H2S)/mol(amine)] between about 0.2 and about 0.6, and is achieved by reducing pH of the absorbent solution.

公开(公告)号：US20170182455A1

公开(公告)日：2017-06-29

申请号：US14980634

申请日：2015-12-28

Applicant: ExxonMobil Research and Engineering Company ,  BASF

Inventor： Carla S. Pereira ,  Michael Siskin ,  Thomas Ingram ,  Gerald Vorberg ,  Martin Ernst

IPC: B01D53/14 ,  B01D53/18

CPC classification number: B01D53/1493 ,  B01D53/1425 ,  B01D53/1468 ,  B01D53/18 ,  B01D2252/204 ,  B01D2252/20431 ,  B01D2252/20478 ,  B01D2252/20489 ,  B01D2257/304 ,  B01D2257/504 ,  C10L3/10 ,  C10L3/103 ,  C10L2290/542

Abstract: A process for selectively separating H2S from a gas mixture which also comprises CO2 is disclosed. A stream of the gas mixture is contacted with an absorbent solution comprising one or more amines, alkanolamines, hindered alkanolamines, capped alkanolamines, or mixtures thereof. The H2S/CO2 selectivity of the absorbent solution is preferably greater than about 4.0 for an acid gas loading [mol(CO2+H2S)/mol(amine)] between about 0.2 and about 0.6, and is achieved by reducing pH of the absorbent solution.

公开(公告)号：US11369919B2

公开(公告)日：2022-06-28

申请号：US16556903

申请日：2019-08-30

Applicant: BASF SE

Inventor： Gerald Vorberg ,  Ralf Notz ,  Thomas Ingram ,  Georg Sieder ,  Torsten Katz

IPC: B01D53/52 ,  B01D53/14 ,  B01D53/78 ,  B01D53/96 ,  C07C217/08 ,  C07C217/28 ,  C07C217/42 ,  C10L3/10

Abstract: An absorbent for selective removal of hydrogen sulfide over carbon dioxide 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.