Integrated process for urea and melamine production
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United States of America Patent
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Issued Date -
Feb 8, 2007
app pub date -
Aug 10, 2004
filing date -
Feb 20, 2004
priority date (Note) -
Abandoned
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Abstract
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).
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