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    Absorbent for selective removal of hydrogen sulfide from a fluid stream
    1.
    发明授权
    Absorbent for selective removal of hydrogen sulfide from a fluid stream 有权

    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.

    SIMULATION OF UNIT OPERATIONS OF A CHEMICAL PLANT FOR ACID GAS REMOVAL
    2.
    发明申请
    SIMULATION OF UNIT OPERATIONS OF A CHEMICAL PLANT FOR ACID GAS REMOVAL 审中-公开

    公开(公告)号：US20200089827A1

    公开(公告)日：2020-03-19

    申请号：US16135465

    申请日：2018-09-19

    Applicant: BASF SE

    Inventor： Agnes Dittel ,  Ralf Notz ,  Sergey Vorobyev ,  Rainer Herget ,  Torsten Katz ,  Gerald Vorberg ,  Kim Hoeffken

    IPC: G06F17/50 ,  G06F17/11 ,  B01D53/14 ,  B01D53/04 ,  H04L12/26

    Abstract: The present invention is related to a method for determination of unit operations of a chemical plant for acid gas removal, the method carried out by a computer or a distributed computer system and the method comprising the steps of: providing a first set of parameters for the unit operations; providing a second set of parameters for the unit operations based on the provided first set of parameters and based on data retrieved from a database; determining a digital model of the chemical plant based on the first set of parameters and the second set of parameters, wherein the digital model comprises a system of equations defining the unit operations of the chemical plant; selecting starting points for an equation-based solution method of the system of equations, wherein the starting points are at least partially selected from the: (i) the first set of parameters; (ii) the second set of parameters; and (iii) the data retrieved from the database; determining resultant settings for the unit operations of the chemical plant using the equation-based solution method for the system of equations initialized by the selected starting points.

    Absorbent and process for selectively removing hydrogen sulfide
    3.
    发明授权
    Absorbent and process for selectively removing hydrogen sulfide 有权

    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.

    SIMULATION OF UNIT OPERATIONS OF A CHEMICAL PLANT FOR ACID GAS REMOVAL
    7.
    发明申请
    SIMULATION OF UNIT OPERATIONS OF A CHEMICAL PLANT FOR ACID GAS REMOVAL 有权

    公开(公告)号：US20210271796A1

    公开(公告)日：2021-09-02

    申请号：US17276762

    申请日：2019-09-16

    Applicant: BASF SE

    Inventor： Agnes Dittel ,  Ralf Notz ,  Sergey Vorobyev ,  Rainer Herget ,  Torsten Katz ,  Gerald Vorberg ,  Kim Hoeffken

    IPC: G06F30/331 ,  G06F17/11 ,  B01D53/04 ,  H04L12/26 ,  B01D53/14

    Abstract: The present invention is related to a method for determination of unit operations of a chemical plant for acid gas removal, the method carried out by a computer or a distributed computer system and the method comprising the steps of: providing (S1) a first set of parameters for the unit operations; providing (S2) a second set of parameters for the unit operations based on the provided first set of parameters and based on data retrieved from a database; determining (S3) a digital model of the chemical plant based on the first set of parameters and the second set of parameters, wherein the digital model comprises a system of equations defining the unit operations of the chemical plant; selecting (S4) starting points for an equation-based solution method of the system of equations, wherein the starting points are at least partially selected from the: —i) the first set of parameters; —ii) the second set of parameters; and —iii) the data retrieved from the database; determining (S5) resultant settings for the unit operations of the chemical plant using the equation-based solution method for the system of equations initialized by the selected starting points.

    Process for removal of acid gases from a fluid stream with a liquid absorbent comprising a piperazine ring
    8.
    发明授权
    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：US12138583B2

    公开(公告)日：2024-11-12

    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 ,  C07D295/13 ,  C10L3/10

    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.

    Removal of hydrogen sulphide and carbon dioxide from a stream of fluid
    9.
    发明授权
    Removal of hydrogen sulphide and carbon dioxide from a stream of fluid 有权

    公开(公告)号：US11278841B2

    公开(公告)日：2022-03-22

    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 ,  B01D53/52 ,  B01D53/78 ,  B01D53/96 ,  C07C217/08 ,  C07C217/28 ,  C07C217/42

    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.

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