B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/58 (2006.01) B01D 53/52 (2006.01) C01C 1/24 (2006.01) C10G 17/00 (2006.01)
Patent
CA 2226023
A process for scrubbing ammonia from refinery gas streams and other such streamsis disclosed. The process involves the removal of hydrogen sulfide as a first step from the stream with subsequent recovery of the hydrogen sulfide. The ammonia is ionized by the introduction of a strong acid, an example of which is sulfuric acid, to render the ammonia ammonium. A product of the reaction in ammonium sulfate which can be immediatelyvended as a fertilizer grade product. Significant advantages in the process relate to a greater than 90% recovery of ammonia and substantially reduced levels of hydrogen sulfide in the fertilizer product. This is marked advantage over the prior art methods which involved incineration of the compounds and other consumption and handling difficulties.
Divulgation d'un processus de lavage de l'ammoniac contenu dans les courants de gaz de raffinerie et autres courants du genre. La première étape du processus consiste à enlever puis à récupérer l'hydrogène sulfuré dans le courant. L'ammoniac est ionisé par l'introduction d'un acide fort, par exemple de l'acide sulfurique, pour être transformé en ammonium. Du sulfate d'ammonium, qui est un produit de la réaction, peut être immédiatement vendu comme engrais. Le processus présente comme avantages notables d'obtenir un taux de récupération de plus de 90 % de l'ammoniac et de réduire considérablement les concentrations d'hydrogène sulfuré dans l'engrais. Ces avantages sont nettement marqués par rapport aux méthodes déjà existantes qui nécessitent l'incinération des composés et occasionnent des difficultés d'utilisation et de manipulation.
Kresnyak Steve
Razzaghi Minoo
Colt Engineering Corporation
Marks & Clerk
LandOfFree
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