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：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：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.