Integrated process for urea and melamine production
US7414130B2 · kind B2 · utility
3Cited by
3References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 13, 2007 |
| Grant date | Aug 19, 2008 |
| Priority date | — |
| Expiry date | Aug 8, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
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).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.