A CONTINUOUS PROCESS FOR THE PREPARATION OF ALCOHOL

摘要

This invention provides a process for producing alcohol by continuous fermentation of fermentable substrate; fermentation being carried out in plurality of fermenters; fermented liquor being separated into a yeast enriched liquid being recirculated to fermenter to maintain the desirable yeast concentration in the fermenter; and a yeast-free liquid fed to distillation columns to obtain alcohol vapour, which being fed to condenser to obtain the alcohol with desired concentration; simultaneously obtaining the spent wash from distillation stage which is re-circulated to the fermenter. The process is characterized by utilization of portable water, reduction of water input, utilization of yeast in active after one cycle and achieving highly concentrated spent wash at the end of the process. The process achieves the desirable alcohol concentration by continuous production by facilitating the maintenance of yeast levels in the fermenters.