The invention discloses an energy-saving preparation technology of high-quality
glucose powder. The technology comprises the following steps: by using
starch as a
raw material, mixing syrup, liquefying, saccharifying, decoloring and removing impurities by an
ultrafiltration membrane, removing salt by
ion exchange, purifying by a
simulated moving bed, collecting the
cut fraction with glucose content of at least 99.5%, and then, performing membrane concentration, vacuum belt
drying, cooling and
grinding to obtain the finished product of the high-quality
glucose powder. According to the preparation technology disclosed by the invention, preparation flows of glucose are shortened, a procedure of
evaporation and concentration is replaced by membrane concentration, the steam consumption is reduced, the production cost is lowered, meanwhile, the glucose
decomposition loss and production of harmful by-products caused by high temperature concentration of
liquid glucose are reduced, and the product quality is improved; the glucose is purified by means of the
simulated moving bed technology, so that the content of impure glucose in products is decreased, and the glucose purity is up to more than 99.5%; the
glucose syrup is dried by means of vacuum belt
drying, and is further ground so as to form the crystalline
glucose powder, so that the production efficiency is improved.