公开(公告)号：WO2016174120A1

公开(公告)日：2016-11-03

申请号：PCT/EP2016/059461

申请日：2016-04-28

Applicant: PROSERNAT

Inventor： FILLATRE, Emile ,  PERDU, Gauthier ,  MARES, Benoit

IPC: B01D53/14 ,  C10L3/10

CPC classification number: B01D53/1406 ,  B01D53/1418 ,  B01D53/1468 ,  B01D53/1487 ,  B01D2252/20431 ,  B01D2252/20489 ,  B01D2256/22 ,  B01D2257/7022 ,  B01D2257/7027 ,  C01B17/043 ,  C10L3/101 ,  C10L3/102 ,  C10L3/103 ,  C10L3/104 ,  C10L2290/12 ,  C10L2290/541

Abstract: The present invention is directed to a process for the removal of aromatic hydrocarbons from a lean acid gas containing less than 20 mol.% of H2S, comprising : a) contacting the lean acid gas stream (1) with a H 2 S-selective liquid absorbent solution (29) in a first absorption zone (2) to produce a gas stream depleted in H 2 S (3) and an absorbent solution enriched in H 2 S (4), b) introducing the absorbent solution (4) into a non-thermic stripping zone (8) where it is contacted with a stripping gas stream (7) to obtain an absorbent solution depleted in C 4 + aliphatic and aromatic hydrocarbons (9) and a stripping gas stream enriched in aromatic and C 4 + aliphatic hydrocarbons (10), c) contacting the stripping gas stream (10)obtained in step b) with a H 2 S-selective liquid absorbent solution (28) in a second absorption zone (12) to obtain a stripping gas stream depleted in H2S (13), and an absorbent solution enriched in H 2 S (14) d) introducing the absorbent solution (9) obtained in step b) into a desorption zone (16) wherein the H 2 S-selective liquid absorbent solution (17) is recovered and a lean acid gas is produced.

Abstract translation: 本发明涉及从含有少于20mol％的H 2 S的贫酸性气体中除去芳族烃的方法，其包括：a）使贫酸性气流（1）与H 2 S选择性液体吸收剂溶液 （4）的吸收剂溶液中，b）将吸收剂溶液（4）引入非热剥离区（4）中， 8）在其中与汽提气流（7）接触以获得耗尽C4 +脂族和芳族烃（9）的吸收剂溶液和富含芳族和C 4 +脂族烃（10）的汽提气流，c）接触 步骤b）中获得的汽提气流（10）中的H2S选择性液体吸收剂溶液（28）在第二吸收区（12）中，以获得贫H2S（13）中的汽提气流，以及富含 H2S（14）d）引入步骤b）中获得的吸收剂溶液（9） 到解吸区（16），其中回收H 2 S选择性液体吸收剂溶液（17）并产生贫酸气体。

公开(公告)号：EP3288667A1

公开(公告)日：2018-03-07

申请号：EP16722094.6

申请日：2016-04-28

Applicant: Prosernat

Inventor： FILLATRE, Emile ,  PERDU, Gauthier ,  MARES, Benoit

IPC: B01D53/14 ,  C10L3/10

CPC classification number: B01D53/1406 ,  B01D53/1418 ,  B01D53/1468 ,  B01D53/1487 ,  B01D2252/20431 ,  B01D2252/20489 ,  B01D2256/22 ,  B01D2257/7022 ,  B01D2257/7027 ,  C01B17/043 ,  C10L3/101 ,  C10L3/102 ,  C10L3/103 ,  C10L3/104 ,  C10L2290/12 ,  C10L2290/541

Abstract: The present invention is directed to a process for the removal of aromatic hydrocarbons from a lean acid gas containing less than 20 mol.% of H2S, comprising : a) contacting the lean acid gas stream (1) with a H2S-selective liquid absorbent solution (29) in a first absorption zone (2) to produce a gas stream depleted in H2S (3) and an absorbent solution enriched in H2S (4), b) introducing the absorbent solution (4) into a non-thermic stripping zone (8) where it is contacted with a stripping gas stream (7) to obtain an absorbent solution depleted in C4 + aliphatic and aromatic hydrocarbons (9) and a stripping gas stream enriched in aromatic and C4 + aliphatic hydrocarbons (10), c) contacting the stripping gas stream (10)obtained in step b) with a H2S-selective liquid absorbent solution (28) in a second absorption zone (12) to obtain a stripping gas stream depleted in H2S (13), and an absorbent solution enriched in H2S (14) d) introducing the absorbent solution (9) obtained in step b) into a desorption zone (16) wherein the H2S-selective liquid absorbent solution (17) is recovered and a lean acid gas is produced.