Fermentation method for producing high concentration carbon dioxide product
US6551805B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2002 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | Apr 3, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B32/50
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for producing carbon dioxide at a flow rate is disclosed. The method comprises several steps including the provision of an oxidant fluid to a fermentation broth, use of oxygen from the oxidant fluid to promote fermentation and microbial growth in a fermenter while producing carbon dioxide within the broth, passing a fermentation broth stream out from the fermenter, and then through a heat exchanger, and then back into the fermenter via a recirculation loop, bubbling carbon dioxide out therefrom the broth creating a gas mixture containing a carbon dioxide concentration of 97.5 mole percent and recovering the gas mixture as product carbon dioxide. The oxidant fluid is provided to the fermentation broth at a flow rate such that the amount of oxygen provided to the fermentation broth is not more than 5 weight percent of the total amount of carbon dioxide being produced. The oxidant fluid contains an oxygen concentration of at least 40 mole percent. The oxidant fluid may be provided to the broth downstream of the heat exchanger, and also can be provided in either the fermenter or in the recirculation loop. Also the oxygen is provided to the broth at a flow rate within the range…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.