Two-stage continuous process for producing a solvent
US10000779B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Jul 23, 2013 |
| Grant date | Jun 19, 2018 |
| Priority date | — |
| Expiry date | Sep 25, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E50/10
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The present invention relates to a two stage continuous microbiological process for the production of solvents such as acetone, butanol and ethanol. The process involves the use of a solventogenic bacteria such as clostridia. In the first(acidogenic) stage, the culture vessel is fed with fresh growth media at dilution rates that support fast growth and acid production. The culture flows into the second (solventogenic) stage, which is a separate culture vessel or vessels, designed to provide the culture with sufficient residence time to convert acids into solvents. This vessel can be tubular or a series of linked batch vessels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.