Method and system for producing a fertilizer or herbicide from a whole stillage byproduct produced in a corn dry milling process
US11230504B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2018 |
| Grant date | Jan 25, 2022 |
| Priority date | — |
| Expiry date | Oct 25, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A40/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Method for producing a fertilizer or herbicide from a whole stillage byproduct produced in a corn dry-milling process for making alcohol and system therefore is disclosed. In one embodiment, the method includes separating the whole stillage byproduct into an insoluble solids portion and a thin stillage portion. Thereafter, the thin stillage portion can be dewatered to provide a water soluble solids portion and a dewatered protein portion, which may be optionally dried. The protein in the resulting protein portion can serve as a nitrogen source and sulfur containing amino acids can serve as a sulfur source, which can be desirable components in fertilizers and herbicides. To that end, the resulting protein portion directly may be sold and/or used as a fertilizer or herbicide or can be combined with other components to provide the fertilizer or herbicide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.