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Process for directly producing high quality white sugar from sugarcane

A high-quality, white sugar technology, applied in the production of cane sugar, sugar production, and juice extraction from sugar cane, etc., can solve the problems of environmental pollution, complex production process and equipment, poor product quality, etc., and achieve high purity and sugar yield. Improved, less impurity effect

Inactive Publication Date: 2005-11-23
霍汉镇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sulfurous acid method is mainly used at home and abroad. Its process and equipment are relatively simple, but the product quality is poor.
The quality of carbonation sugar products is slightly better, but the production process and equipment are more complicated, especially the serious environmental pollution. More than half of the original carbonation sugar factories in China have stopped using this process, and the remaining carbonation sugar factories are less than 10

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of technology that directly manufactures high-quality white sugar by sugarcane provided by the invention, this technology comprises the following steps:

[0030] (1) Treatment of sugarcane juice by low-temperature phosphorus floatation method: the sugarcane juice obtained by pressing sugarcane is pre-added with lime milk to a pH value of 7.2-8.0, heated to 50-65°C, and then added phosphoric acid and clarifying agent. The amount of phosphoric acid added is as follows Phosphorus pentoxide is calculated to be 0.15~0.3g / L, and fine, uniform and active bubbles are prepared by the foam making system, then add lime milk to neutrality, then add flocculant and stir to promote flocculation. A large number of impurities in sugarcane juice include sugarcane bran, sugarcane wax, sugarcane fat, starch and some pigments and colloids, which aggregate together with calcium phosphate and flocculants to form solid particles with a large number of fine air bubbles inside, and then en...

Embodiment 2

[0034] A kind of technology that directly manufactures high-quality white sugar by sugarcane provided by the invention, this technology comprises the following steps:

[0035] (1) Treatment of sugarcane juice by low-temperature phosphorus floatation method: the sugarcane juice obtained by pressing sugarcane is pre-added with lime milk to a pH value of 7.2-8.0, heated to 50-65°C, and then added phosphoric acid and clarifying agent. The amount of phosphoric acid added is as follows Phosphorus pentoxide is calculated to be 0.15~0.3g / L, and fine, uniform and active bubbles are prepared by the foam making system, then add lime milk to neutrality, then add flocculant and stir to promote flocculation. A large number of impurities in sugarcane juice include sugarcane bran, sugarcane wax, sugarcane fat, starch and some pigments and colloids, which aggregate together with calcium phosphate and flocculants to form solid particles with a large number of fine air bubbles inside, and then en...

Embodiment 3

[0039] A kind of technology that directly manufactures high-quality white sugar by sugarcane provided by the invention, this technology comprises the following steps:

[0040] (1) Treatment of sugarcane juice by low-temperature phosphorus floatation method: the sugarcane juice obtained by pressing sugarcane is pre-added with lime milk to a pH value of 7.2-8.0, heated to 50-65°C, and then added phosphoric acid and clarifying agent. The amount of phosphoric acid added is as follows Phosphorus pentoxide is calculated to be 0.15~0.3g / L, and fine, uniform and active bubbles are prepared by the foam making system, then add lime milk to neutrality, then add flocculant and stir to promote flocculation. A large number of impurities in sugarcane juice include sugarcane bran, sugarcane wax, sugarcane fat, starch and some pigments and colloids, which aggregate together with calcium phosphate and flocculants to form solid particles with a large number of fine air bubbles inside, and then en...

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Abstract

The present invention discloses a process in which high quality white sugar is directly produced from sugarcane. The first step of the process is low temperature phosphorus floatation method to remove most insolubles and parts of organic colloids, obtaining clean solution. The second step is to further increase the quality of the cane solution, this step has the following three alternative methods depending on the actual situations: 1) blowing sulphur dioxide in lime milk and decolourant, and heating and precipitation separating, 2) blowing carbon dioxide which is produced from alcohol fermentation, and precipitating by adding lime milk, followed by phosphoric acid gas floatation separation. 3) treating with electrolysis method. Adopting the present invitation, the clean solution has the properties of light color and high purity. The quality of the product of white sugar meets the standard of 'beverage sugar'. The production rate and digestion recycle rate are obviously higher than that of the conventional sulfurous acid process. Therefore, the present technology has good economic efficiency. The equipment investment and production cost is low.

Description

technical field [0001] The invention relates to a process for producing white sugar from sugarcane. Background technique [0002] At present, sugar in the world is dominated by cane sugar. There are two ways to produce sugar from sugarcane, one is to directly produce white sugar from cane juice, and its quality is not high; the other is to first produce raw sugar from cane juice, and then dissolve and refine it to produce refined sugar. The former is called one-step method, and the latter is called two-step method. Both methods are commonly used internationally. The sugar factories in our country all use one-step method, which has the advantages of simple production process, less investment and low production cost, but the disadvantage is that the product quality is not high. The product quality of the two-step method is high, but the production process is long, the energy consumption is large, and the investment and production costs are much higher. Therefore, it is dif...

Claims

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Application Information

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IPC IPC(8): C13B10/02C13B25/00
Inventor 霍汉镇
Owner 霍汉镇
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