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IMPROVEMENTS IN PROCESSES FOR THE PRODUCTION OF ETHANOL BY FERMENTATION
IMPROVEMENTS IN PROCESSES FOR THE PRODUCTION OF ETHANOL BY FERMENTATION
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机译:发酵生产乙醇的工艺改进
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摘要
A flow of fermenting liquor from a fermentor is separated into a yeast concentrate flow, which is recirculated to the fermentor, and a yeast-free flow which is separated in a simple evaporator unit into a first ethanol-enriched vapor flow and a first liquid bottom flow. The first vapor flow is treated to produce the desired ethanol while a major part of the first liquid bottom flow is recirculated to the fermentor. A minor, residual part of the latter flow is fed to a stripping unit where it is separated into a second ethanol-enriched vapor flow and a second liquid bottom flow exhausted of ethanol.
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