Use method of water in glucose production

Abstract

The invention discloses a use method of water in glucose production. The glucose production includes the steps of mixing by water, liquefying, saccharification,ion exchange for removing impurities, evaporation, centrifugation and affination for obtaining mother liquor and mother liquor drying; wherein the centrifugation and affination step adopts softened water obtained by reverse osmosis for affination, and the water used in mixing and the water for producing softened water by reverse osmosis are condensed water produced by the evaporation and drying steps. The invention comprehensively utilizes the condensed water, concentrated water and water for washing ion exchange column, thus being sufficient for normal production water supply; production waste water is comprehensively recycled and utilized, thus not only reducing production cost but also having good social benefit.

Description

technical field [0001] The invention relates to the technical field of preparing glucose from starch, in particular to the improvement of a water-using process in glucose production. Background technique [0002] Starch is a carbohydrate polysaccharide, which is a polymer compound composed of many glucose units. Depending on its hydrolysis depth, it can produce glucose, maltodextrin, oligosaccharides, fructose syrup, etc., among which the production capacity is the largest, the use is the most, and the development The fastest is glucose. At present, the production process of producing glucose from starch is generally as follows: the starch is made into powdered milk with water, the powdered milk is liquefied, saccharified into glucose, filtered, enzyme inactivated, decolorized, ion exchange column is used to remove impurities, sugar solution is evaporated, crystallized, and sugar is washed by centrifugation. Obtain the mother liquor and the drying steps of the mother liquor...

AI Technical Summary

Problems solved by technology

This commonly used production process has the following problems: First, tap water is used for powder adjustment, and the water consumption is generally 2 tons per ton of product, while a large amount of condensed water produced in the steps of evaporation of sugar solution and drying of mother liquor is discharged outside, causing water resources The second is that the centrifugal sugar washing step uses softened water prepared by reverse osmosis process with tap water. A large amount of concentrated water after preparing softened water cannot be reused because the conductivity is as high as 669. It can only be discharged outside, which also causes water loss. Serious waste of resources; and when the ion exchange column removes impurities, it is necessary to use tap water to wash out the sugar solution in the ion exchange column after the ion exchange column fails. heavy burden