Recovery method of ammonia from gaseous mixture
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsHiroshi Umino, Nobuyasu Chikamatsu, Hirofumi Ito, Masamichi Mizukami
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Abstract
An object of the present invention is to carry out separation recovery of ammonia efficiently from a gaseous mixture containing ammonia and carbon dioxide, without generating a solid ammonium carbamate. A recovery method of ammonia from a gaseous mixture, includes a process (I) in which a gaseous mixture containing ammonia and carbon dioxide is contacted with an organic solvent to allow the organic solvent to absorb ammonia in the gaseous mixture, and a process (II) in which the organic solvent which absorbed ammonia is distilled to separate ammonia from the organic solvent.
Claims9
A recovery method of ammonia from a gaseous mixture, comprising a process (I) in which a gaseous mixture comprising ammonia and carbon dioxide is contacted with an organic solvent selected from the group consisting of alcohol, ether, ketone, ester, and halogenated hydrocarbon to allow said organic solvent to absorb ammonia, and a process (II) in which said organic solvent which absorbed ammonia is distilled to separate ammonia from said organic solvent.
Dependencies are inferred from the claim text.