Method and apparatus for producing ammonium carbonate from urea

Details Method and apparatus for producing ammonium carbonate from urea Method and apparatus for producing ammonium carbonate from urea

C - Chemistry, Metallurgy

01

C

C01C 1/08 (2006.01) C01C 1/26 (2006.01)

Patent

CA 2697369

A method for producing ammonium carbonate from urea having the steps of providing a urea solution; hydrolyzing the urea solution to produce NH3, CO2 and water vapor at a chosen temperature; contacting the NH3, CO2 and water vapor with an ammonium carbonate solution; and maintaining the concentration of ammonium carbonate between 5 and 30 % by weight by adding water to the solution.

L'invention porte sur un procédé de fabrication de carbonate d'ammonium à partir d'urée, ce procédé comportant les étapes consistant à obtenir une solution d'urée; hydrolyser la solution d'urée pour produire NH3, CO2 et de la vapeur d'eau à une température choisie; mettre en contact le NH3, CO2 et la vapeur d'eau avec une solution de carbonate d'ammonium; et maintenir la concentration de carbonate d'ammonium entre 5 et 30 % en poids par addition d'eau à la solution.

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