Methods for the production of ammonia from urea and/or biuret, and uses for NO.sub.x and/or particulate matter removal
US6077491A · kind A · utility
35Cited by
3References
49Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1997 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Mar 21, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01C1/086
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This patent describes technology for generating ammonia from urea. The method is based on the hydrolysis of an aqueous solution of urea and/or biuret by heating under pressure to form a mixture of ammonia, carbon dioxide and water. The gas mixtures produced are useful for supplying ammonia at controlled pressure and rate of flow for many industrial applications without the risks and hazards associated with the transportation and on-site storage of ammonia, thereby providing a significant safety advantage over present industrial practice.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.