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    SULFUR RECOVERY PLANT TAIL GAS TREATMENT PROCESS
    1.
    发明公开
    SULFUR RECOVERY PLANT TAIL GAS TREATMENT PROCESS 有权
    硫回收装置尾气处理工艺

    公开(公告)号：EP2451561A1

    公开(公告)日：2012-05-16

    申请号：EP10797639.1

    申请日：2010-07-01

    申请人： ExxonMobil Research and Engineering Company

    发明人： IYENGAR, Jagannathan, N. ,  PERRY, David ,  FEDICH, Robert, B.

    IPC分类号： B01D53/14

    CPC分类号： B01D53/1406 ,  B01D53/1468 ,  B01D53/1481 ,  B01D53/1493 ,  B01D53/523 ,  B01D2252/103 ,  B01D2252/2025 ,  B01D2252/20405 ,  B01D2252/20426 ,  B01D2252/20484 ,  B01D2252/502 ,  B01D2257/302 ,  B01D2257/304 ,  B01D2258/00 ,  C01B17/0456 ,  C01B17/167 ,  C01B17/60

    摘要： A process for the removal of hydrogen sulfide from a gas stream in which the gas stream is first passed through a Claus unit operating at a sub-stoichiometric ratio (H
    2 S: SO
    2 ) of greater than 2:1 to produce a tail gas stream comprising less than 2000 vppm SO
    2 . This tail gas stream is then treated to increase the sulfur recovery to at least 99.5% by first directly cooling the tail gas stream by contact with water as a coolant, followed by contacting the gas stream with a circulating stream of a dilute, absorbent solution of a severely sterically hindered secondary aminoether alcohol to further cool the gas stream, and then removing the H
    2 S from the stream using a stronger absorbent solution of a severely sterically hindered secondary aminoether alcohol.

    摘要翻译： 一种从气流中除去硫化氢的方法，其中气流首先通过以亚化学计量比（H 2 S:SO 2）大于2:1操作的克劳斯单元，以产生尾气流 包含小于2000vppm的SO 2。然后处理该尾气流，以通过首先通过与作为冷却剂的水接触直接冷却尾气流而将硫回收率提高到至少99.5％，接着使气流与循环 将严重空间位阻的仲氨基醚醇的稀释吸收剂溶液流进一步冷却气流，然后使用强烈的位阻严重的仲氨基醚醇的吸收剂溶液从流中除去H 2S。