Methods for the production of ammonia from urea and uses...

C - Chemistry – Metallurgy – 01 – C

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C01C 1/08 (2006.01) B01D 53/56 (2006.01) B01D 53/86 (2006.01) C01C 1/02 (2006.01)

Patent

CA 2284292

This patent describes technology for generating ammonia from urea. The method is based on the hydrolysis of an aqueous solution of urea and/or biuret by heating under pressure to form a mixture of ammonia, carbon dioxide and water. The gas mixtures produced are useful for supplying ammonia at controlled pressure and rate of flow for many industrial applications without the risks and hazards associated with the transportation and on-site storage of ammonia, thereby providing a significant safety advantage over present industrial practice.

Cette invention concerne un ensemble de procédés de production d'ammoniac à partir d'urée. Ce procédé directeur consiste en l'hydrolyse d'une solution aqueuse d'urée et/ou de biuret que l'on chauffe sous pression jusqu'à former de l'ammoniac, du dioxyde de carbone et de l'eau. Les mélanges produits conviennent à la fourniture à pression contrôlée, à débit contrôlé d'ammoniac destiné à de nombreuses applications industrielles sans les risques inhérentsau transport et au stockage sur site de l'ammoniac, ce qui présente un avantage en matière de sécurité par rapport à la pratique industrielle actuelle.

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