The invention provides a method for recycling
alcohol from dried steam of waste
yeast to prepare base of liquor, belonging to the technical field of
brewing, which comprises surface air cooler condensation, tubular
heat exchanger condensation, the absorption of absorption
tower, crude process of
alcohol, refining of
alcohol, and
post treatment of alcohol. Beer
yeast slurry produces large amount of steam containing alcohol by the
drying of a roller dryer, the steam enters a surface air cooler to condense most of water, the uncondensed steam enters a tubular
heat exchanger to condense most of alcohol, and the rest uncondensed steam enters an absorption
tower to be absorbed by water. After mixing the recycled alcohol-water blend,
continuous distillation by a
topping still is adopted to remove
impurity and improve alcohol concentration, and
batch distillation by the hog still is adopted for further refining, thereby acquiring high-quality liquor base used for blending liquor. The method recycles alcohol by three steps, and the
recovery rate is up to 100 percent; by using the recycled alcohol to prepare liquor base,
food resources are fully used, environmental
pollution is reduced and
economic benefits of enterprises are increased.