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New clarification technique for refining sugar from sugar cane

A new technology, sugarcane technology, is applied in the new technology field of sugarcane sugar clarification, which can solve the problems that affect the quality of clear juice, the quality of white granulated sugar, the health of workers, and the instability of sugarcane crushing, so as to improve economic and social benefits, Good quality and good thermal stability

Inactive Publication Date: 2007-07-25
刘和清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 clarification technique for refining sugar from sugar cane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take 1000mL of sugarcane mixed juice, add Al 3+ , Zn 2+ , Ca 2+ , B 3+ Mixed ion polysilicate coagulant 0.4mL, heated to 55-65°C, then added 1.0g of sodium dithionite solid, 5.0mL of polydimethyldiallyl ammonium chloride (1%), added lime milk Neutralize to pH=6.8-7.5, heat again to 100-105°C, add 2mg / L polyacrylamide, then settle at constant temperature to separate mud juice and clear juice. After analysis, the purity difference of the clear juice increased by 1.5 percentage points, the decolorization rate was 80.5%, and the turbidity removal rate was 99%.

Embodiment 2

[0022] Take 1000mL of sugarcane mixed juice, add Al 3+ , Zn 2+ , Mg 2+ Mixed ion polysilicate coagulant 0.3mL, heated to 55-65°C, then added 1.0g of sodium metabisulfite solid, polydimethyldienyl ammonium chloride (1%) 4.0mL, added to milk of lime and to pH = 6.8-7.5, heated to 100-105°C for the second time, added 2mg / L polyacrylamide, and then settled at constant temperature to separate mud juice and clear juice. After analysis, the purity difference of the clear juice increased by 1.8 percentage points, the decolorization rate was 82.8%, and the turbidity removal rate was 99%.

Embodiment 3

[0024] Take 1000mL of sugarcane mixed juice, add Al 3+ , Mg 2+ , B 3+ Mixed ion polysilicate coagulant 0.3mL, heated to 65-70°C, then add 2.0g solid sodium bisulfite, 5.0mL polydodecyl quaternary ammonium salt (1%), add lime milk to neutralize To pH = 6.8-7.5, reheat to 105-110°C, add 2mg / L polyacrylamide, then settling at constant temperature to separate mud juice and clear juice. After analysis, the purity difference of the clear juice increased by 1.7 percentage points, the decolorization rate was 82%, and the turbidity removal rate was 99.5%.

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Abstract

This invention provides a new process for clarifying sugar produced from sugarcane. The process comprises: (1) adding inorganic decolorant, poly (quaternary ammonium salt), polysilicate coagulant and polyacrylamide into sugarcanejuice, heating, adding lime suspension to neutralize, heating, and separating clear juice and mud slurry in a precipitation pool or a flotation pool; (2) evaporating the clear juice, concentrating, boiling, crystallizing, and separating to obtain sugar product. Compared with traditional phosphoric acid / sulphurous acid process, the process has such advantages as simple process flow, light clear juice color, high sugar quality, saved phosphoric acid resources, and clean production.

Description

technical field [0001] The invention relates to a sugar production process, in particular to a new clarification process for sugar production from sugarcane. 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 stipulate...

Claims

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Application Information

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IPC IPC(8): C13D3/02C13F1/00C13B20/02C13B25/00
Inventor 刘和清刘善柳
Owner 刘和清
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