CPC B01J 19/245 (2013.01) [B01J 3/03 (2013.01); C07C 273/04 (2013.01); C07D 251/60 (2013.01); B01J 2219/0004 (2013.01); B01J 2219/00024 (2013.01)] | 15 Claims |
1. A melamine-urea plant comprising:
a melamine plant (MEL) for the production of melamine starting from urea, obtaining a product stream containing melamine and a stream of offgas containing NH3 and CO2 in gaseous form;
a offgas-fed urea plant (UR) dedicated to the synthesis of urea starting from said stream of offgas, said offgas-fed urea plant being apt to produce urea starting from ammonia and CO2, and comprising at least a high-pressure synthesis section running at a synthesis pressure and a recovery section running at a recovery pressure lower than said synthesis pressure,
wherein said stream of offgas provides at least 90% of ammonia and CO2 supply of said offgas-fed urea plant.
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