PROCESSES FOR ENHANCING THE PERFORMANCE OF LARGE-SCALE, STIRRED TANK ANAEROBIC FERMENTORS AND APPARATUS THEREFOR
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United States of America Patent
Stats
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N/A
Issued Date -
Mar 28, 2013
app pub date -
Sep 23, 2011
filing date -
Sep 23, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Processes and apparatus 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 deep, stirred tank fermentation system with high conversion efficiency of both hydrogen and carbon monoxide. Gas feed to the reactor is injected using a motive liquid to form a stable dispersion of microbubbles thereby reducing energy costs, and a portion of the off-gases from the reactor are recycled to (i) achieve a conversion of the total moles of carbon monoxide and hydrogen in the gas substrate to oxygenated organic compound of at least about 80 percent and (ii) attenuate the risk of carbon monoxide inhibition of the microorganism used for the bioconversion.
First Claim
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