Stabilized liquid ammonia fertilizer from animal waste
US11667588B2 · kind B2 · utility
3Cited by
1References
20Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 15, 2019 |
| Grant date | Jun 6, 2023 |
| Priority date | — |
| Expiry date | May 8, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/145
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A liquid fertilizer is produced from off-gassed ammonia resulting from the processing of animal waste materials, particular animal manure. The vaporized ammonia is generated primarily by heating the animal waste materials and capturing the resulting vapors and particulate materials. The ammonia vapors and particles are removed from the gas stream through a scrubbing operation, which creates an ammonium-enriched liquid stream that can be concentrated into an organic fertilizer having a high-nitrogen content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.