Preparation of ethanol from corn
US11034923B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2017 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Feb 6, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/74
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
A corn-to-ethanol production process is disclosed. The process includes the steps of dry-milling corn kernels to form a corn flour; combining the corn flour with water to form a mash; extracting corn oil from the mash; fermenting the mash thereby producing beer and carbon dioxide; distilling the beer to produce ethanol and whole stillage; and processing the whole stillage to produce wet distiller's grains with solubles (WDGS) and/or dried distiller's grains with solubles (DDGS). The step of extracting corn oil from the mash includes the sub steps of: optionally wet-milling the mash; separating the mash to produce a light phase and a heavy phase; adding an alkanesulfonic acid to the light phase; extracting corn oil from the light phase; and combining the light phase having the corn oil extracted therefrom with the heavy phase to reform the mash.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.