White granulated sugar production technology

Abstract

The invention discloses a white granulated sugar production technology. The white granulated sugar production technology comprises the following steps: 1, adding sodium hydroxide to mixed juice obtained by pressing sugarcane till the pH value of the mixed juice is 5.5-6.5, heating the mixed juice to 60-65 DEG C, and decolorizing the mixed juice through electric flocculation so as to obtain clear liquor; 2, clarifying the clear liquor by adopting a ceramic membrane separation system; 3, desalinating ceramic membrane dialysate for the first time in an electrodialysis system; 4, concentrating electrodialysis desalted liquid by adopting a nanofiltration membrane concentration system; 5, decolorizing a nanofiltration concentrated solution by using macroreticular strong alkaline anion exchange resin; 6, desalting sugar liquor (which is decolorized by macroreticular strong alkaline anion exchange resin) by using macroreticular weak-acid cation-exchange resin for the second time; and 7, evaporating, concentrating and crystallizing the sugar liquor which is desalinated for the second time so as to obtain white granulated sugar. The white granulated sugar production technology disclosed by the invention has the beneficial effects that the produced white granulated sugar is sulfur-free white granulated sugar, and the discharge of wastewater is reduced.

Description

technical field [0001] The invention relates to a method for producing sugar from sugarcane, in particular to a white granulated sugar production process. Background technique [0002] White granulated sugar is a kind of edible sugar. There are many types of edible sugar, which can be divided into raw sugar or coarse sugar, soft white sugar, white granulated sugar, rock sugar, cube sugar, brown granulated sugar, soil brown sugar, etc. White granulated sugar and soft white sugar are commonly known as white sugar. White granulated sugar is the food sugar with the largest consumption in the food and beverage industry and civilian use. According to different sugar making processes, white granulated sugar can be divided into sulfurized sugar and carbonized sugar. Carbonized sugar has a longer shelf life and better quality, but the production cost is relatively high and the market price is relatively expensive. At present, most sugar factories in my country produce sulfurized s...

AI Technical Summary

Problems solved by technology

[0005] In the traditional white sugar production process, the decolorization of sugar juice produces a large amount of sediment, a large amount of chemical agents are added, the slow process leads to low sugar yield, and the cost of sugar cooking is high. Ion exchange decolorization and desalination process, regenerated acid-base Large amount of waste water and other characteristics

[0006] In the traditional process, the clarified sugar juice is directly desalted and decolorized by ion exchange resin, which has the characteristics of small adsorption capacity, short regeneration cycle, and large amount of wastewater generated.

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