公开(公告)号：US10543452B2

公开(公告)日：2020-01-28

申请号：US15570645

申请日：2016-04-28

Applicant: PROSERNAT

Inventor： Emile Fillatre ,  Gauthier Perdu ,  Benoit Mares

IPC: B01D53/14 ,  C01B17/04 ,  C10L3/10

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.

公开(公告)号：US10821396B2

公开(公告)日：2020-11-03

申请号：US15772471

申请日：2015-10-30

Applicant: TOTAL SA ,  IFP ENERGIES NOUVELLES ,  PROSERNAT

Inventor： Claire Weiss ,  Thomas Maubert ,  Maxime Fournie ,  Manel Fourati ,  Philippe Beard ,  Pascal Alix ,  Gauthier Perdu ,  Clément Salais ,  Vincent Carlier

IPC: B01D53/18 ,  B01D3/20 ,  B01D53/14 ,  B01D1/00 ,  B01D3/24 ,  B01D3/32

Abstract: The present invention relates to a gas-redirecting device presenting an upper plane and a plurality of gas-redirecting tubes comprising an inlet end and an outlet end. For each gas-redirecting tube, the orthogonal projections of the inlet end and the outlet end onto the upper plane have an over-lapping area of at most 50% of the total area of the upper plane covered by the orthogonal projections. Also provided is a liquid-gas contacting column comprising a gas-redirecting device, a floating support comprising a liquid-gas contacting column, at least two packed beds and a method for improving the efficiency of a liquid-gas contacting column which is based on redirecting the gas from a wetted zone of a lower packed bed to a wetted zone of the higher packed bed.