Process for controlling sulfur in a fermentation syngas feed stream
US8597934B2 · kind B2 · utility
1Cited by
21References
25Claims
0Family size
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Inventor
Key dates
| Filing date | Oct 28, 2010 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Dec 22, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/145
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Ethanol and other liquid products are produced from biomass using gasification of the biomass to produce a syngas containing CO2, CO, H2 and sulfur or sulfur compounds that passes the syngas to a fermentation step for the conversion of the CO and CO2 and H2 to ethanol. Sulfur and sulfur compounds in the syngas are used to satisfy sulfur demanded by bacteria in the fermentation step. A sulfur control additive is added to the gasification to control syngas sulfur and sulfur compounds at a desired concentration to meet bacteria sulfur demand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.