Process for preparation of urea

Details Process for preparation of urea Process for preparation of urea

C - Chemistry, Metallurgy

07

C

260/548.4

C07C 273/04 (2006.01)

Patent

CA 1113495

PROCESS FOR PREPARATION OF UREA ABSTRACT OF THE DISCLOSURE In a urea synthesis process, the reaction product from the reaction vessel is flowed in series through high pressure, medium pressure and low pressure decom- posing and stripping devices to decompose ammonium carbamate to NH3 gas, CO2 gas and water vapor, and to remove those gases and unreacted starting materials from the aqueous urea solution. CO2 gas is used as the stripping gas in the decomposing and stripping devices.

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