Methods for the production of ammonia from urea and/or biuret, and uses for NOx and/or particulate matter removal
US7220395B2 · kind B2 · utility
12Cited by
27References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2003 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Feb 16, 2025 |
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.