Process for urea production and related plant

Details Process for urea production and related plant Process for urea production and related plant

C - Chemistry, Metallurgy

07

C

C07C 273/04 (2006.01)

Patent

CA 2606357

A process for urea production from ammonia and carbon dioxide, in which part of the aqueous solution comprising urea, ammonium carbamate and ammonia obtained in a urea synthesis section is subjected to dissociation in a treatment section operating at a predetermined medium pressure for the recovery of the ammonium carbamate and of the ammonia contained in it, comprises the step of subjecting the urea aqueous solution resulting from the aforementioned dissociation step to decomposition in a low pressure urea recovery section.

Un procédé de production d'urée à partir d'ammonium et de dioxyde de carbone dot une partie de la solution aqueuse comprenant de l'urée, du carbamate d'ammonium et de l'ammonium obtenu dans une partie de synthèse d'urée est soumise à dissociation dans un traitement appliqué à une pression moyenne prédéterminée dans le but de récupérer le carbamate d'ammonium et l'ammonium contenu dans celui-ci. Le procédé consiste à soumettre la solution aqueuse d'urée obtenue à l'étape de dissociation précitée afin de décomposer une partie de récupération d'urée à faible pression.

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