C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 21/12 (2006.01) C01C 1/10 (2006.01) C07D 251/60 (2006.01)
Patent
CA 2454168
The invention relates to a method for obtaining an ammonium carbamate solution from a gas mixture that contains more than 40 wt.% NH3, less than 50 wt.% CO2 and less than 40 wt.% H2O and has a pressure between 0.1 MPa and 4 MPa, comprising a compression step, in which the pressure of the gas mixture is increased to a pressure between 0.5 MPa and 25 MPa, and an absorption step.
L'invention concerne un procédé permettant d'obtenir une solution de carbamate d'ammonium à partir d'un mélange de gaz renfermant plus de 40 % en poids de NH¿3?, moins de 50 % en poids de CO¿2? et moins de 40 % en poids de H¿2?O et possédant une pression comprise entre 0,1 MPa et 4 MPa. Ce procédé comprend une étape de compression au cours de laquelle on augmente la pression du mélange de gaz de manière à obtenir une pression comprise entre 0,5 MPa et 25 MPa, ainsi qu'une étape d'absorption.
Dsm Ip Assets B.v.
Fetherstonhaugh & Co.
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