公开(公告)号：US12043809B2

公开(公告)日：2024-07-23

申请号：US17251001

申请日：2019-05-31

Applicant: BASF SE

Inventor： Georg Sieder ,  Raquel Fernandez-Rodiles ,  Thomas Ingram

IPC: C10L3/10 ,  B01D5/00 ,  B01D53/00 ,  B01D53/14

CPC classification number: C10L3/101 ,  B01D5/0003 ,  B01D53/002 ,  B01D53/1425 ,  B01D53/1456 ,  B01D53/1475 ,  B01D53/1487 ,  B01D53/1493 ,  C10L3/102 ,  C10L3/103 ,  C10L3/104 ,  B01D2252/20431 ,  B01D2252/20447 ,  B01D2252/20489 ,  B01D2257/102 ,  B01D2257/602 ,  B01D2257/80 ,  C10L2290/08 ,  C10L2290/44 ,  C10L2290/541

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 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 is condensed out of the gaseous stream from step b);

wherein the regenerator additionally comprises a rescrubbing section, and the condensate from step d) is recycled into the regenerator partly in the upper region of the rescrubbing zone or above the rescrubbing zone.