Low temperature processing technique for sugar mill mixing liquor by sulfurous acid method

Abstract

The present invention relates to a mixing low-temperature treatment process used in a sulfitation sugar mill where sugar cane juice is treated. The present invention is characterized in that 2 to 10 baume degrees of lime cream watery solution is added into the pressed combination juice manufactured according to the traditional process, 5 to 1000 ppm of clarificant used by a G409 aluminum raw massecuite, 50 to 1000 ppm of chitosan exclusively used for the flocculation and the purification, one or more of CO 2 can be added to be matched and used, to lead the solution to be prepared into the solution of pH value (6-12) after the solution is mixed; the clarificant with 0.01-0.2 percent of concentration and 1 to 4 ppm of mass is mixed; the mixed solution is sent into a float-up device. The present invention has the advantage that the stoving intensity can be decreased by 35 percent to 45 percent. Thus the loss of the sugar share is decreased, and the quantity of the raw material is saved. The reduction of the depositional area is greatly helpful to improve the juicing amount and the withdrawal, thereby decreasing the investment; the product quality and the withdrawal are improved; the production cost is low, the material which is harmful to the food is not required to be added, and only the usual drug in the sugar manufacturing process of the sugar mill is required to be added.

Description

technical field [0001] The invention relates to a mixed low-temperature treatment process for sugar cane juice by sulfitation method used in sugar factories. Background technique [0002] Due to the continuous requirement of high extraction rate and the continuous improvement of sugarcane crushing degree, the squeezed mixed juice contains a large amount of suspended particles, such as cane bran, sugarcane wax, etc., and contains a large amount of semi-suspended particles such as starch. They are insoluble at first, but after being heated to high temperature, especially after a long time, some of them dissolve or transform into a colloidal state and disperse into sugarcane juice, and some originally light-colored substances become dark-colored substances at high temperature. Mainly as follows: [0003] (1) 80% of the impurities in the mixed juice are cane bran. The pectin and some polysaccharides contained in cane bran are also insoluble in the original, but they will gradu...

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Problems solved by technology

Such substances are often found in sugar factory equipment, especially on the surface of filter cloth, the

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