Decolourization method for producing sucrose mix juice

Abstract

The sucrose juice decolorizing process includes the following steps: low temperature phosphoric acid floating treatment of mixed juice in the purity of 78.19 AP and through preheating to 50 deg.c, adding phosphoric acid mixture, neutralizing with lime milk, inflating, adding flocculant and separating out neutral slime, to obtain clear juice of purity raised to 80.66 AP and color value lowered to 92.66 st deg; pre-decolorizing the clear juice heated to 75 deg.c with diatomite in 1.0 wt% of sucrose for 60 min to lower the color number to 75.23 st deg; and decolorizing the clear juice with active carbon in 1.0 wt% of sucrose for 30 min to further lower the color number to 30.70 st deg. The process has the advantages of no production of alkali slime, short technological process, high purity of obtained sucrose juice and greatly lowered color number.

Description

technical field [0001] The invention is a decolorization method for making sucrose juice. technical background [0002] my country's sugarcane sugar industry adopts carbonation or sulfurous acid method. The quality of the sugar products produced by the former is better, but the process is complicated, the cost is high, and the filter mud is produced in a large amount, which cannot be used as fertilizer. It needs to be stored for more than 5 years to be fired into cement, and a large-scale storage yard needs to be built. produce secondary pollution. The production process of sulphite method is relatively simple, with less investment, and the filter mud can be used as farmland fertilizer, but the product has high color value, turbidity, ash content, sulfur content, easy to turn yellow, poor preservation, and increasingly does not meet market needs. A low-temperature phosphorous floatation-carbonic acid clarification process emerged as the times require, but the process has t...

AI Technical Summary

Problems solved by technology

The quality of the sugar products produced by the former is better, but the process is complicated, the cost is high, and the filter mud is produced in a large amount, which cannot be used as fertilizer. It needs to be stored for more than 5 years to be fired into cement, and a large-scale storage yard needs to be built. produce secondary pollution

The production process of the sulfite method is relatively simple, with less investment, and the filter mud can be used as farmland fertilizer, but the product has high color value, turbidity, ash content, sulfur content, easy to turn yellow, poor preservation, and increasingly does not meet market needs

A low-temperature phosphorous floatation-carbonic acid clarification process emerged as the times require, but the process has the following main problems: the direct firing of alkaline filter mud to cement has high cost and is difficult to be accepted by cement manufacturers; it leads to an increase in the cost of sugar products; the process is long