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：US10195565B2

公开(公告)日：2019-02-05

申请号：US15539257

申请日：2015-12-23

Applicant: PROSERNAT

Inventor： Michael Heisel ,  Benoit Mares

IPC: C10L3/10 ,  C01B17/04 ,  B01D53/52 ,  B01D53/86 ,  B01D53/90

Abstract: A process for the removal of hydrogen sulfide and sulfur recovery from a H2S-containing gas stream by catalytic direct oxidation and Claus reaction through two or more serially connected catalytic reactors, wherein a specific control of the oxygen supplement is operated. The control and improvement of the process is obtained by complementing, in each major step of the process, the H2S-containing gas stream by a suitable flow of oxygen, namely before the H2S-containing gas stream enters the Claus furnace, in the first reactor of the process and in the last reactor of the process. Especially in application in a SubDewPoint sulfur recovery process the H2S/SO2 ratio is kept constant also during switch-over of the reactors R1 and R by adding the last auxiliary oxygen containing gas directly upstream the last reactor R so that the H2S/SO2 ratio can follow the signal of the ADA within a few seconds.

公开(公告)号：US09586177B2

公开(公告)日：2017-03-07

申请号：US14688067

申请日：2015-04-16

Applicant: PROSERNAT

Inventor： Benoit Mares

IPC: C01B17/04 ,  B01D53/86

CPC classification number: B01D53/8612 ,  B01D53/8615 ,  B01D2255/20707 ,  B01D2255/20738 ,  B01D2255/20746 ,  B01D2255/20753 ,  B01D2255/20761 ,  B01D2255/20769 ,  B01D2255/20776 ,  B01D2255/20784 ,  B01D2255/2092 ,  B01D2255/65 ,  B01D2255/702 ,  B01D2255/9032 ,  B01D2255/904 ,  B01D2257/306 ,  B01D2257/308 ,  C01B17/0439 ,  C01B17/0469 ,  Y02P20/584

Abstract: A process for removing sulfur from a gas containing sulfur compounds as H2S, SO2, COS, CS2 . . . , in a quantity of up to 15% wt; particularly gases emanating from the Claus process: A first hydrogenation of the sulfur compounds into H2S, the hydrogenation gas being used to regenerate a deactivated bed of oxidation catalyst, both being carried out at 200-500° C. After sulfur removal, the resulting gas undergoes a second hydrogenation step and then a direct oxidation step, said step being operated under the dew point of sulfur to trap the formed sulfur in the catalyst. In the further cycle, the gas streams are switched so as to regenerate the catalyst in run which is deactivated.

Abstract translation: 一种从含有硫化合物的气体中除去硫的方法，如硫化氢，二氧化硫，氧化碳，二氧化碳。 。 。 ，其量高达15％wt; 特别是克劳斯方法产生的气体：将硫化合物首先氢化为H 2 S，氢化气体用于再生失活的氧化催化剂床，二者都在200-500℃下进行。除硫后，得到的气体 经历第二个氢化步骤，然后进行直接氧化步骤，所述步骤在硫的露点下操作以捕集形成的硫在催化剂中。 在进一步的循环中，气流被切换，从而在运行中再生催化剂而被去活化。