C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 21/22 (2006.01) B01D 53/14 (2006.01)
Patent
CA 2720403
The present invention relates to a process for purifying a gas mixture containing dinitrogen monoxide at least comprising treatment of a gas mixture G-O containing dinitrogen monoxide with a gas mixture G-A being obtained, at least comprising the absorption of the gas mixture G-O in a solvent mixture LM-I with an off- gas stream and a composition Z-A being obtained, and desorption of a gas mixture G-1 from the composition Z-A with a solvent mixture LM-I' being obtained, subsequent condensation of the gas mixture G-A with a liquid composition Z-1 containing dinitrogen monoxide and a gaseous mixture G-K being obtained, wherein the gaseous mixture G-K is recirculated to the process.
La présente invention concerne un procédé d'épuration d'un mélange gazeux contenant du protoxyde d'azote, qui comprend au moins le traitement d'un mélange gazeux G-O contenant du protoxyde d'azote de façon à obtenir un mélange gazeux G-A, qui comprend au moins l'absorption du mélange gazeux G-O dans un mélange de solvants LM-I de façon à obtenir un flux de gaz d'échappement et une composition Z-A, et la désorption d'un mélange gazeux G-1 à partir de la composition Z-A de façon à obtenir un mélange de solvants LM-I', puis la condensation du mélange gazeux G-A de façon à obtenir une composition liquide Z-1 contenant du protoxyde d'azote et un mélange gazeux G-K, ledit mélange gazeux G-K étant renvoyé dans le procédé.
Baumann Dieter
Roessler-Feigel Beatrice
Teles Joaquim Henrique
Basf Se
Robic
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