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    PROCESS FOR REMOVAL OF ACID GASES FROM A FLUID STREAM WITH A LIQUID ABSORBENT COMPRISING A PIPERAZINE RING
    12.
    发明申请
    PROCESS FOR REMOVAL OF ACID GASES FROM A FLUID STREAM WITH A LIQUID ABSORBENT COMPRISING A PIPERAZINE RING 有权

    公开(公告)号：US20220152551A1

    公开(公告)日：2022-05-19

    申请号：US17431872

    申请日：2020-02-14

    Applicant: BASF SE

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

    IPC: B01D53/14 ,  C10L3/10 ,  C07D295/13

    Abstract: A process for removal of acid gases from fluid stream, wherein the fluid stream is brought into contact with an absorbent to obtain a treated fluid stream and a laden absorbent, the absorbent comprising a diluent and a compound of the general formula (I) wherein R1 is selected from C1-C8-alkyl and C2-C8-hydroxyalkyl; R2 is selected from hydrogen and C1-C8-alkyl; R3 is selected from hydrogen and C1-C8-alkyl; R4 is selected from hydrogen and C1-C8-alkyl; R5 is C1-C8-alkyl; with the proviso that at least one of the following conditions (i) and (ii) is met: (i) R5 is C3-C8-alkyl bound to the nitrogen atom via a secondary or tertiary carbon atom; (ii) when R4 is hydrogen, R3 is C1-C8-alkyl; or when R4 is C1-C8-alkyl, at least one of R2 and R3 is C1-C8-alkyl; and n is an integer from 0 to 6. Further provided is an absorbent for the absorption of acid gases from a fluid stream, comprising a diluent and a compound of the general formula (I) as defined above, as well as the use of a compound of the general formula (I) as defined above for removal of acid gases from a fluid stream. The absorbents are useful for the selective removal of hydrogen sulfide from fluid streams and have high acid gas loading capacity, high stability, and low volatility.

    ABSORBENT AND PROCESS FOR SELECTIVELY REMOVING HYDROGEN SULFIDE
    13.
    发明申请
    ABSORBENT AND PROCESS FOR SELECTIVELY REMOVING HYDROGEN SULFIDE 审中-公开

    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.

    ABSORBENT FOR SELECTIVE REMOVAL OF HYDROGEN SULFIDE FROM A FLUID STREAM
    14.
    发明申请
    ABSORBENT FOR SELECTIVE REMOVAL OF HYDROGEN SULFIDE FROM A FLUID STREAM 审中-公开

    公开(公告)号：US20190388829A1

    公开(公告)日：2019-12-26

    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: B01D53/14 ,  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.

    ABSORBENT AND PROCESS FOR SELECTIVELY REMOVING HYDROGEN SULFIDE
    18.
    发明申请
    ABSORBENT AND PROCESS FOR SELECTIVELY REMOVING HYDROGEN SULFIDE 审中-公开

    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.

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