发明名称 |
From carbon monoxide and hydrogen anaerobic fermentation processing using a pre-reactor/deep tank reactor system |
摘要 |
Processes are disclosed for the low energy, anaerobic bioconversion of hydrogen and carbon monoxide in a gaseous substrate stream to oxygenated organic compounds such as ethanol by contact with microorganisms in a fermentation system with high conversion efficiency of both hydrogen and carbon monoxide. The processes of this invention use a pre-reactor and a deep, tank reactor in gaseous substrate flow sequence to obtain high conversion of gas substrate without undue risk of carbon monoxide inhibition. |
申请公布号 |
US8980597(B2) |
申请公布日期 |
2015.03.17 |
申请号 |
US201113243347 |
申请日期 |
2011.09.23 |
申请人 |
Coskata, Inc. |
发明人 |
Hickey Robert;Donnellan Steven L. |
分类号 |
C12P7/06;C12P1/04;C12P7/04;C12P7/24;C12P7/40 |
主分类号 |
C12P7/06 |
代理机构 |
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代理人 |
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主权项 |
1. A continuous process for the anaerobic bioconversion of a gas substrate comprising carbon monoxide, carbon dioxide and hydrogen in an aqueous menstruum containing microorganisms suitable for converting said substrate to oxygenated organic compound, said process comprising:
a. continuously supplying a gas feed comprising said gas substrate to a pre-reactor assembly comprising at least one pre-reactor and contacting the gas feed with an aqueous menstruum therein, said contacting being under conditions sufficient to convert in the pre-reactor assembly between 10 and 40 percent of carbon monoxide in the gas feed to said oxygenated organic compound and provide a pretreated gas comprising unreacted carbon monoxide in a mole fraction less than that in the gas feed, unreacted hydrogen, and carbon dioxide in a mole fraction greater than that in the gas feed; b. continuously supplying at least a portion of the pretreated gas to a deep, tank reactor as microbubbles having a diameter of less than 500 microns for contact with an aqueous menstruum therein, said contacting being under conditions sufficient to provide a total, overall molar conversion of carbon monoxide and hydrogen contained in said gas feed in steps a and b to said oxygenated organic compound of at least 80 percent; and c. recovering oxygenated organic compound from the aqueous menstruum from the deep, tank reactor. |
地址 |
Warrenville IL US |