Sulfur-free clarifying method for cane sugar manufacture

A technology for sugar cane and clear juice, applied in the direction of using adsorbent for purification, etc., can solve the problems of weakening the competitiveness of the sugar market, and achieve the effect of improving the safety of sugar and broadening the sugar market.

Active Publication Date: 2014-06-18
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Well-known brands of food and beverages at home and abroad, such as Coca-Cola, Pepsi, etc. 2 The content requirements have always been very strict, so a considerable part of my country's sugar cannot enter this huge market, which seriously weakens the competitiveness of my country's sugar in the international market

Method used

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  • Sulfur-free clarifying method for cane sugar manufacture
  • Sulfur-free clarifying method for cane sugar manufacture

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A method for sulfur-free clarification of sugarcane sugar, comprising the following steps:

[0028] (1) Heat the sugarcane mixed juice to 80°C-95°C;

[0029] (2) Continuously add phosphoric acid with a concentration of 8% under stirring, and at the same time add milk of lime with a concentration of 8'Be until the pH of the sugarcane mixed juice is 7.5; wherein, the amount of phosphoric acid is: each liter of sugarcane mixed juice contains phosphoric acid 200 mg;

[0030] (3) Heat the sugarcane mixed juice with phosphoric acid and milk of lime to boiling;

[0031] (4) Sedimentation and separation to obtain a clear juice;

[0032] (5) Heat the clear juice in step 4 to 85°C-100°C;

[0033] (6) Add lime milk until the pH of the clear juice is 7.5;

[0034] (7) Pass the clear juice from step 6 into the reactor, add tannin and Ca(HCO 3 ) 2 To clarify and decolorize the clear juice; wherein, the amount of tannin is 100 mg of tannin per liter of clear juice; Ca(HCO 3 ) ...

Embodiment 2

[0038] A method for sulfur-free clarification of sugarcane sugar, comprising the following steps:

[0039] (1) Heat the sugarcane mixed juice to 80°C-95°C;

[0040] (2) Continuously add phosphoric acid with a concentration of 10% under stirring, and at the same time add milk of lime with a concentration of 10'Be until the pH of the sugarcane mixed juice is 7.0; wherein, the amount of phosphoric acid is: each liter of sugarcane mixed juice contains phosphoric acid 400 mg;

[0041] (3) Heat the sugarcane mixed juice with phosphoric acid and milk of lime to boiling;

[0042] (4) Sedimentation and separation to obtain a clear juice;

[0043] (5) Heat the clear juice in step 4 to 85°C-100°C;

[0044] (6) Add lime milk until the pH of the clear juice is 8.8;

[0045] (7) Pass the clear juice from step 6 into the reactor, add tannin and Ca(HCO 3 ) 2 To carry out clarification and decolorization treatment to a clear juice; wherein, the amount of tannin is that every liter of a c...

Embodiment 3

[0049] A method for sulfur-free clarification of sugarcane sugar, comprising the following steps:

[0050] (1) Heat the sugarcane mixed juice to 80°C-95°C;

[0051] (2) Continuously add phosphoric acid with a concentration of 8.8% under stirring, and at the same time add milk of lime with a concentration of 12'Be until the pH of the sugarcane mixed juice is 8.0; wherein, the amount of phosphoric acid is: each liter of sugarcane mixed juice contains phosphoric acid 350 mg;

[0052] (3) Heat the sugarcane mixed juice with phosphoric acid and milk of lime to boiling;

[0053] (4) Sedimentation and separation to obtain a clear juice;

[0054] (5) Heat the clear juice in step 4 to 85°C-100°C;

[0055] (6) Add lime milk until the pH of the clear juice is 8.9;

[0056] (7) Pass the clear juice from step 6 into the reactor, add tannin and Ca(HCO 3 ) 2 To clarify and decolorize the clear juice; wherein, the amount of tannin is 350 mg of tannin per liter of clear juice; Ca(HCO 3 ) ...

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Abstract

The invention discloses a sulfur-free clarifying method for cane sugar manufacture. According to the method, lime milk, phosphoric acid, calcium bicarbonate and tannin are taken as clarifying agents, sugarcane mixed juice is taken as the raw material, after filtering by a sieve, primary clear juice is obtained through clarifying by a lime method, then the tannin and calcium bicarbonate are added for secondary clarifying, so as to obtain secondary clear juice. Sulfur-free sugar is produced without using SO2 in the whole process, so that the problem that domestic sugar has SO2 is solved thoroughly, the safety of the sugar is improved, and domestic sugar products are increased.

Description

technical field [0001] The invention relates to the field of sugar production, in particular to a sulfur-free clarification method for sugar production from sugarcane. Background technique [0002] More than 95% of my country's sugarcane sugar production uses the sulfurous acid clarification process, that is, the use of SO 2 As the main clarifying agent, it reacts with Ca2+ of milk of lime to generate CaSO with strong adsorption capacity 3 Precipitation, absorbing colloids, pigments and other non-sugar components in sugarcane juice to precipitate together; at the same time, SO 2 It also has the effect of good bleaching and inhibiting the formation of pigment, and achieves the effect of removing impurities and decolorizing. So SO 2 It has been in an irreplaceable position in the sulfite sugar production. However, due to the clarification process of sulfite method, the pH value is controlled in the neutral range, and sugarcane juice is a complex system, and some substances...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13B20/12
Inventor 谢彩锋李凯陆海勤杭方学李红陆登俊梁欣泉刘继栋
Owner GUANGXI UNIV
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