Membrane Separation Technology for starch Sugar production

The sugar, including maltose, glucose, fructose syrup and so on, which is made from starch-containing grain and potato by acid, acidase or enzyme method, is called starch sugar. 

Sugar production and consumption in China has been dominated by sucrose and supplemented by starch sugar for a long time. In recent years, the state has vigorously promoted and promoted starch sugar. At present, the production technology of starch sugar still has the problems of high production cost and poor quality, so we urgently need the advanced starch sugar production technology.

Because the content of solid substance in saccharified liquid is very small, a large amount of filter aid should be added in the filtration process to improve the filtration effect in the production process of starch sugar. This operation not only increases the operation cost, but also the quality of filtrate is poor. The ceramic membrane filtration can replace the traditional filter press to clarify the saccharification liquid. The obtained filter solution has a high degree of clarity. It not only effectively removes the residual sugar slime due to saccharification and incomplete liquefaction, but also intercepts most of the macromolecular substances and non-pigment. The color value, turbidity and insoluble impurity are 20% lower than that of the traditional process, simplify the process, improve the decolorization efficiency and the quality of semi-finished products. To analyze the solution Pre-concentration with nanofiltration can not only remove some inorganic salts and miscellaneous monosaccharides, but also avoid the change of color value caused by long-term high-temperature concentration of sugar solution, reduce the concentration cost and increase the economic benefit.

The advantages of starch sugar membrane separation technology are as follows:

1. The cross-flow operation design of the system does not need to add filter aid, no new impurities will be introduced, and the problem of pollution blockage will be solved thoroughly.

2. The production cost of the membrane separation and concentration system is about 1 / 5 of the steam concentration cost, which greatly saves the production cost of the enterprise and has great technical and economic advantages.

3.  the concentration process runs at room temperature (25 ℃) without phase change, qualitative change, chemical reaction, no destruction of effective components, no destruction of thermal sensitive components, and greatly saving energy consumption;

4. membrane filtration automation degree is high and safe and reliable, effectively reduce labor intensity, membrane filtration process in a closed container can achieve a good clean production;

5. membrane materials and auxiliary equipment materials are pollution-free materials, in line with QS/GMP and other specifications.