Process for increasing the capacity of a urea plant

Details Process for increasing the capacity of a urea plant Process for increasing the capacity of a urea plant

C - Chemistry, Metallurgy

07

C

C07C 273/12 (2006.01)

Patent

CA 2494382

Process for increasing the capacity of a urea plant comprising a compression section, a high-pressure synthesis section, a urea recovery section, in which a urea melt is formed, and optionally a granulation section, the capacity of the urea plant being increased by the additional installation of a melamine plant and the urea melt from the urea recovery section of the urea plant being fed wholly or partly to the melamine plant and the residual gases from the melamine plant being returned wholly or partly to the high-pressure synthesis section and/or the urea recovery section of the urea plant.

La présente invention concerne un procédé pour augmenter la capacité d'une installation de production d'urée comprenant une section de compression, une section de synthèse sous haute pression, une section de récupération d'urée, dans laquelle une masse fondue d'urée est formée, ainsi qu'éventuellement une section de granulation. Ce procédé consiste à installer en supplément une installation de production de mélamine, à conduire partiellement ou complètement la masse fondue d'urée provenant de la section de récupération d'urée de l'installation de production d'urée à l'installation de production de mélamine et à rapporter partiellement ou complètement les gaz résiduels de l'installation de production de mélamine à la section de synthèse sous haute pression et/ou à la section de récupération d'urée de l'installation de production d'urée.

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