Process and plant for the production of urea with high conversion yield and low energy consumption
US6342632B1 · kind B1 · utility
4Cited by
12References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1997 |
| Grant date | Jan 29, 2002 |
| Priority date | — |
| Expiry date | Jan 24, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
In a process for the production of urea, substantially pure ammonia and carbon dioxide are reacted in a reaction space (1) from which comes out a reaction mixture subjected to stripping (2) to obtain a partially purified mixture sent to a urea recovery section (3, 4, 7, 8). From the recovery section (3, 4, 7, 8) it is obtained a dilute carbamate solution, which is subjected to stripping (9) with recycling of vapors to the reaction space (1) after condensation (6). This process achieves high conversion yield with reduced energy consumption and low implementation costs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.