C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 273/04 (2006.01)
Patent
CA 2082469
ABSTRACT Process for the industrial synthesis of urea, by reacting ammonia (NH3) and carbon dioxide (CO2) in at least one- reaction space, at high pressures and temperatures and by recirculating at least part of the non-reacted products obtained in a recovery section, characterized by the fact- that the following takes place : a synthesis reaction A) between highly pure reagents, and a synthesis reaction s) between less pure reagents, substantially recycled from the said recovery section, the reaction A) being either of adiabatic type A1) or with partial reaction heat removal A2).
Pagani Giorgio
Zardi Umberto
Oyen Wiggs Green & Mutala
Urea Casale S.a.
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