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    APPARATUS AND PROCESS FOR PRODUCING A DEACIDIFIED FLUID STREAM
    12.
    发明申请
    APPARATUS AND PROCESS FOR PRODUCING A DEACIDIFIED FLUID STREAM 有权

    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

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

    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.

    DISCRIMINATION OF CIS- AND TRANS-1,3-DIAMINOCYCLOHEXANES
    13.
    发明申请
    DISCRIMINATION OF CIS- AND TRANS-1,3-DIAMINOCYCLOHEXANES 审中-公开

    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.

    PROCESS FOR REMOVAL OF ACID GASES FROM A FLUID STREAM WITH A LIQUID ABSORBENT COMPRISING A PIPERAZINE RING
    16.
    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 FOR SELECTIVE REMOVAL OF HYDROGEN SULFIDE FROM A FLUID STREAM
    17.
    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.

    CYCLOHEXANEDIAMINES FOR USE IN GAS SCRUBBING
    20.
    发明申请
    CYCLOHEXANEDIAMINES FOR USE IN GAS SCRUBBING 审中-公开

    公开(公告)号：US20190126194A1

    公开(公告)日：2019-05-02

    申请号：US16306784

    申请日：2017-06-08

    Applicant: BASF SE

    Inventor： Thomas INGRAM ,  Gustavo Adolfo LOZANO MARTINEZ ,  Alexander PANCHENKO ,  Martin ERNST

    IPC: B01D53/14 ,  C10L3/10

    Abstract: 1,3-Diaminocyclohexanes of the general formula (I) are suitable for removing carbon dioxide from fluid streams where the radicals R are each, independently of one another, C1-4-alkyl; and n is an integer from 0 to 3. The amino groups of the 1,3-diaminocyclohexane are preferably arranged in trans position relative to one another in the plane of the cyclohexane ring. Absorption media for removing carbon dioxide from fluid streams comprise a) a 1,3-diaminocyclohexane of the general formula (I) and b) optionally at least one tertiary amine and/or a sterically hindered primary or secondary amine. In a process for removing carbon dioxide from fluid streams, the absorption medium is brought into contact with a fluid stream.

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