Flexible integrated method for the production of ammonia and urea
US4320103A · kind A · utility
14Cited by
7References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 4, 1980 |
| Grant date | Mar 16, 1982 |
| Priority date | — |
| Expiry date | Sep 4, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In an integrated flexible installation for producing ammonia and urea, the improved method which consists in that a portion of the gaseous stream comprising carbon dioxide, hydrogen and nitrogen is fed to a complementary decarbonation area and then admixed with a portion of a similar, but non-decarbonated stream of gas prior to entering the carbon-dioxide-absorption unit. Liquid ammonia is recovered from a portion of the ammoniated aqueous solution used for abating the ammonia and sent to a distillation column to recover liquid ammonia therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.