B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/14 (2006.01) B01D 53/50 (2006.01) B01D 53/52 (2006.01) B01D 53/73 (2006.01) C01B 17/04 (2006.01) C01B 17/05 (2006.01)
Patent
CA 2371826
The invention provides an improvement to a known process for removing hydrogen sulfide out of a gas, which uses a non-aqueous scrubbing liquor (24) that contains dissolved sulfur and an amine base. The hydrogen sulfide reacts with the elemental sulfur and the amine base to form amine polysulfides and a scrubbed gas (10). The known process uses air to oxidize the amine polysulfides into sulfur, water and amine base, and collects the sulfur (20). The improvement is the use of sulfur dioxide as the oxidizing agent.
La présente invention concerne un perfectionnement apporté à un procédé connu de suppression de l'hydrogène sulfuré contenu dans u gaz. On utilise à cet effet une liqueur de lavage non aqueuse (24) contenant du soufre dissout et une base aminée. L'hydrogène sulfuré réagit avec soufre élémentaire et la base aminée donnant des polysulfures aminés et un gaz lavé (10). Le procédé connu fait intervenir l'air pour oxyder les polysulfures aminés en soufre, eau et base aminée, à la suite de quoi on recueille le soufre (20). Le perfectionnement tient en l'utilisation d'anhydride sulfureux comme oxydant.
Dalrymple Dennis
Deberry David W.
Crystatech Inc.
Gowling Lafleur Henderson Llp
Urs Corporation
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