公开(公告)号：US20180257022A1

公开(公告)日：2018-09-13

申请号：US15760257

申请日：2016-09-14

Applicant: BASF SE

Inventor： Thomas INGRAM ,  Georg SIEDER ,  Imke PREIBISCH

IPC: B01D53/14 ,  C10L3/10

CPC classification number: B01D53/1493 ,  B01D53/1468 ,  B01D2252/2023 ,  B01D2252/2026 ,  B01D2252/20405 ,  B01D2252/20426 ,  B01D2252/20484 ,  B01D2252/2056 ,  B01D2252/40 ,  B01D2252/502 ,  B01D2252/504 ,  C10L3/102 ,  C10L3/103 ,  C10L3/104 ,  C10L2290/541 ,  C10L2290/542

Abstract: An absorbent for selective removal of hydrogen sulfide from a fluid stream comprising carbon dioxide and hydrogen sulfide, which comprises a) 10% to 70% by weight of at least one sterically hindered secondary amine having at least one ether group and/or at least one hydroxyl group in the molecule; b) at least one nonaqueous solvent having at least two functional groups selected from ether groups and hydroxyl groups in the molecule; and c) optionally a cosolvent; where the hydroxyl group density of the absorbent ρabs is in the range from 8.5 to 35 mol(OH)/kg. Also described is a process for selectively removing hydrogen sulfide from a fluid stream comprising carbon dioxide and hydrogen sulfide, wherein the fluid stream is contacted with the absorbent. The absorbent features good regeneration capacity and high cyclic acid gas capacity.