公开(公告)号：US20160166975A1

公开(公告)日：2016-06-16

申请号：US14902670

申请日：2014-07-04

Applicant: BASF SE

Inventor： Georg SIEDER ,  Iven CLAUSEN ,  Javier GARCIA PALACIOS ,  Gustavo Adolfo LOZANO MARTINEZ

IPC: B01D53/14

CPC classification number: B01D53/1425 ,  B01D53/1418 ,  B01D53/1456 ,  B01D53/1493 ,  B01D2252/204 ,  B01D2252/20426 ,  B01D2257/404 ,  B01D2258/0283 ,  B01D2259/804

Abstract: A process for separating off acid gases from a nitrogen oxide-comprising fluid stream, wherein a) the fluid stream is brought into contact in an absorption zone with an aqueous absorbent which comprises at least one amino group-comprising compound, wherein a deacidified fluid stream is obtained, b) the deacidified fluid stream is brought into contact in at least one scrubbing zone with an aqueous scrubbing liquid and a de-aminated deacidified fluid stream is obtained, wherein the scrubbing liquid is recycled via at least one scrubbing zone, c) overflow from the at least one scrubbing zone is treated with UV light, and d) the UV-treated overflow is combined with the absorbent. The process permits the efficient degradation of the nitrosamines present in the absorbent.

Abstract translation: 一种用于从含氮氧化物的流体物流中分离出酸性气体的方法，其中a）使所述流体物流与含有至少一种含氨基化合物的含水吸收剂在吸收区中接触，其中脱酸流体流 b）使脱酸的流体物流与至少一个洗涤区域与含水洗涤液接触，并且获得脱氨化的脱酸流体物流，其中所述洗涤液体经由至少一个洗涤区域再循环，c） 用UV光处理来自至少一个洗涤区的溢流，以及d）将经UV处理的溢流与吸收剂结合。 该方法允许存在于吸收剂中的亚硝胺的有效降解。