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US 2012/0308452 A1Published application
Absorbent solution containing a breakdown inhibitor derived from thiazole or from oxazole and absorption process for acid compounds contained in a gaseous effluent
AssigneeIfp
InventorsP-Louis Carrette, Bruno Delfort
Life of this patent
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Abstract
The degradation of an absorbent solution comprising organic compounds provided with an amine function in aqueous solution is reduced considerably in the presence of a small amount of degradation inhibiting additives whose structure comprises a 5-atom heterocycle composed of a nitrogen atom, a sulfur atom or an oxygen atom, and 3 carbon atoms, at least one of which is joined to a sulfur atom not belonging to the ring. The absorbent solution is employed for deacidifying a gaseous effluent.
Claims14
1) Absorbent solution for absorbing the acidic compounds of a gaseous effluent, said solution comprising:
- a) at least one amine,
- b) water,
- c) at least one degradation inhibiting compound for limiting the degradation of said amine, said inhibiting compound comprising a five-atom heterocycle consisting of a nitrogen atom, a sulfur atom or an oxygen atom and three carbon atoms, at least one of the carbon atoms being joined to a sulfur atom outside of the ring.
Dependencies are inferred from the claim text.