Integrated Process for Urea and Melamine Production

摘要

In an integrated process for urea and melamine production, urea is produced in a urea plant ( 12 ) comprising a high pressure urea synthesis section ( 15 ) and a urea recovery section ( 16 ) for separating urea from a carbamate aqueous solution, and melamine is produced in a melamine plant ( 11 ) wherein off-gases resulting as byproducts of the melamine synthesis are discharged therefrom at a pressure of at least 2 bar and recycled to the high pressure urea synthesis section ( 15 ).