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New sugaring and clarifying process of low-sulfur low-phosphorus sugarcane

A new technology, sugarcane technology, is applied in sucrose production, sugar products, sugar production, etc. It can solve the problems that affect the quality of clear juice, white granulated sugar, endanger the health of workers, and the instability of sugarcane crushing, so as to achieve the realization of circular economy and Sustainable development, improvement of economic and social benefits, and good thermal stability

Active Publication Date: 2013-05-22
广西糖业集团防城精制糖有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this clarification process depends on the decolorization of sulfur dioxide. When the combustion of sulfur dioxide is unstable, the amount of sugarcane squeezed is unstable, and the amount of sulfur dioxide is large, it will seriously affect the quality of clear juice and white sugar.
Sometimes the leakage of sulfur dioxide gas causes serious environmental pollution and endangers the health of workers

Method used

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  • New sugaring and clarifying process of low-sulfur low-phosphorus sugarcane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take 1000mL of sugarcane mixed juice, add lime milk to prelime to pH = 6.4, then add 5mL of 1.0% polydimethyldiallyl ammonium chloride, after heating to 60-70°C once, add 1.2g of heavy sulfur oxide solid , add 4mL of 10% zinc dihydrogen phosphate coagulant, neutralize with milk of lime to pH=7.8, heat again to 98-105°C, finally add 1.5mg of polyacrylamide, pour it into a 1000mL graduated cylinder at 98- After standing at a constant temperature of 100°C for 15 minutes, the clear juice was separated. After analysis, the purity difference of the clear juice increased by 4.5 percentage points, the decolorization rate was 78.5%, and the turbidity removal rate was 99%.

Embodiment 2

[0032] Take 1000mL of sugarcane mixed juice, add milk of lime to prelime to pH = 6.8, then add 7mL of 1.0% polydimethyldiallyl ammonium chloride, heat to 60-70°C once, add solid sodium bisulfite 2.0 g, add 3mL of 10% zinc dihydrogen phosphate coagulant, neutralize with milk of lime to pH=8, heat again to 98-105°C, finally add 1.0mg of polyacrylamide, pour it into a 1000mL graduated cylinder at 98 After standing at a constant temperature of -100°C for 15 minutes, the clear juice was separated. After analysis, the purity difference of the clear juice increased by 3 percentage points, the decolorization rate was 80%, and the turbidity removal rate was 98%.

Embodiment 3

[0034] Take 1000mL of sugarcane mixed juice, add milk of lime to prelime to pH=7.0, then add 4.5mL of 1.0% polydimethyldiallyl ammonium chloride, after heating to 60-70℃ once, add heavy sulfur oxide solid 1.5 g, add 2mL of 10% zinc dihydrogen phosphate coagulant, neutralize with milk of lime to pH=7.8, heat again to 98-105°C, finally add 1.5mg of polyacrylamide, pour it into a 1000mL graduated cylinder at 98 After standing at a constant temperature of -100°C for 15 minutes, the clear juice was separated. After analysis, the purity difference of the clear juice increased by 4.5 percentage points, the decolorization rate was 85%, and the turbidity removal rate was 99%.

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Abstract

The invention provides a new sugaring and clarifying process of low-sulfur low-phosphorus sugarcane. The process comprises the following steps of: respectively adding an inorganic salt decoloring agent, polyquaternium and a zinc dihydrogen phosphate coagulant into the mixed sugarcane juice, feeding the mixed juice into a sedimentation tank or a floatation tank to separate out clear juice and mud juice after performing primary heating, the neutralization by adding lime milk and secondary heating; and obtaining a finished product of sugar after the clear juice is evaporated, concentrated, sugar boiled, crystallized and purged. Compared with the existing phosphate-sulfite clarification method, the new sugaring and clarifying process of low-sulfur low-phosphorus sugarcane disclosed by the invention has the advantages of short process flow, low tone and good quality of the clear juice and good thermal stability, and is capable of saving the resources of lime, sulphur and phosphoric acid, shortening the process flow, improving the product quality and realizing the cleaned production by removing the sulphitation process and device.

Description

technical field [0001] The invention relates to a new clarification process of low-sulfur and low-phosphorus sugarcane sugar production. Background technique [0002] my country is the world's major producer and consumer of sucrose. There are 21 provinces (autonomous regions) producing sucrose. More than 90% of the sugar factories use the phosphoric acid-sulfurous process to produce sucrose, and less than 10% of the sugar factories use the carbonic acid process to produce sucrose. . The quality of sucrose produced by carbonic acid method is better than that of sulfurous acid method, but the production cost is high, and the pollution problem caused by carbonic acid filter mud is difficult to solve, which makes it difficult to promote the carbon method process. The quality of sucrose produced by sulphite method is worse than that of carbonic acid method, the main problem is color value and SO 2 The content is too high. Since 2006, my country has stipulated that the color valu...

Claims

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Application Information

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IPC IPC(8): C13B50/00C13B20/00C13B20/02C13B20/16C13B25/00C13B30/00
CPCY02P40/40
Inventor 刘和清杨宇格杨汉珉
Owner 广西糖业集团防城精制糖有限公司
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