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    ABSORPTIONSMITTEL ZUR SELEKTIVEN ENTFERNUNG VON SCHWEFELWASSERSTOFF AUS EINEM FLUIDSTROM
    4.
    发明公开
    ABSORPTIONSMITTEL ZUR SELEKTIVEN ENTFERNUNG VON SCHWEFELWASSERSTOFF AUS EINEM FLUIDSTROM 审中-公开

    公开(公告)号：EP3185988A1

    公开(公告)日：2017-07-05

    申请号：EP15753038.7

    申请日：2015-08-20

    申请人： BASF SE

    发明人： VORBERG, Gerald ,  NOTZ, Ralf ,  INGRAM, Thomas ,  SIEDER, Georg ,  KATZ, Torsten

    IPC分类号： B01D53/14 ,  C10L3/10

    CPC分类号： B01D53/1468 ,  B01D53/1493 ,  B01D2251/506 ,  B01D2251/512 ,  B01D2252/2026 ,  B01D2252/20405 ,  B01D2252/20431 ,  B01D2252/20484 ,  B01D2252/20494 ,  B01D2252/205 ,  B01D2252/504 ,  B01D2252/60 ,  C10L3/103 ,  C10L2200/0259 ,  C10L2200/0263 ,  C10L2200/0268 ,  C10L2290/06 ,  C10L2290/12 ,  C10L2290/48 ,  C10L2290/541 ,  C10L2290/545

    摘要： An absorbent for selective removal of hydrogen sulfide 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 R
    1 and R
    2 are each independently selected from C
    1 -
    4 -alkyl and C
    1 -
    4 -hydroxyalkyl; R
    3 , R
    4 , R5 and R
    6 are each independently selected from hydrogen, C
    1 -
    4 -alkyl and C
    1 -
    4 -hydroxyalkyl, with the proviso that at least one R
    4 and/or R5 radical on the carbon atom bonded directly to the nitrogen atom is C
    1 -
    4 -alkyl or C
    1 -
    4 -hydroxyalkyl when R
    3 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 0.3 to 0.7, and c) an acid in an amount, calculated as neutralization equivalents relative to the protonatable nitrogen atoms in a) and b), of 1.0 to 9.0%. One preferred amine of the formula is 2-(2-tert-butylaminoethoxy)ethanol. The absorbent allows a defined H
    2 S selectivity to be set at pressures of the kind typical in natural gas processing. In addition, a process for removing acidic gases from a fluid stream having a partial H
    2 S pressure of at least 0.1 bar and/or a partial CO
    2 pressure of at least 0.2 bar by means of this absorbent.

    摘要翻译： 用于从流体流中选择性除去硫化氢的吸收剂包含a）叔胺的水溶液，b）通式（I）的空间位阻仲胺，其中R 1和R 2各自独立地选自C 1-4 - 烷基和C 1-4 - 羟烷基; R3，R4，R5和R6各自独立地选自氢，C1-4-烷基和C1-4-羟烷基，条件是在与氮原子直接键合的碳原子上的至少一个R4和/或R5基团是 当R3是氢时，C1-4-烷基或C1-4-羟烷基; x和y是2至4的整数，z是1至4的整数; 其中b）与a）的摩尔比在0.3至0.7的范围内，和c）相对于a）和b）中的可质子化氮原子计算的作为中和当量的酸的量为1.0至9.0％ 。 下式的一种优选的胺是2-（2-叔丁基氨基乙氧基）乙醇。 吸收剂允许将确定的H 2 S选择性设定为天然气处理中典型类型的压力。 此外，还提供了一种用于通过该吸收剂从具有至少0.1巴的部分H 2 S压力和/或至少0.2巴的部分CO 2压力的流体流中去除酸性气体的方法。