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Publication of GB1053775ApublicationCriticalpatent/GB1053775A/en
B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
Process for the production of urea from a solution containing ammonium carbamate,ammonia and water,with a total recycle of ammonia and carbon dioxide which were not transformed