Method for adjusting addition of flocculants in stoving neutral juice based on zeta potential value

A flocculant and potential value technology, which is applied in the purification of sugar juice, sugar production, sucrose production, etc., can solve the problems that affect the quality of white sugar products, the quality of clear juice is low, and the flocculation and clarification effect cannot be achieved.

Inactive Publication Date: 2013-09-04
上海中道糖业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the sugar factory mainly controls the optimal amount of flocculant addition based on production experience, and at the same time adjusts the quality of clear juice afterwards; in this way, the amount of flocculant is often not the optimal amount, and the ideal flocculation and clarification effect cannot be achieved. Lead to low quality of clear juice, which in turn affects the quality of white sugar products

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  • Method for adjusting addition of flocculants in stoving neutral juice based on zeta potential value
  • Method for adjusting addition of flocculants in stoving neutral juice based on zeta potential value

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Embodiment 1

[0038] A method for adjusting the addition of flocculants in sulfur-fumed neutralized juice based on the zeta potential value of clear juice after flocculation and clarification of sulfur-fumed neutralized juice

[0039] In the clarification process of the existing sugar-making process, the selection of step A. the type of flocculant is carried out first:

[0040] ①When the zeta potential value of the clear juice after flocculation and clarification of the sulfur-fumed neutralized juice is negative, a cationic flocculant is used;

[0041] ② When the zeta potential value of the clear juice after flocculation and clarification of the sulfur-fumed neutralized juice is positive, an anionic flocculant is used.

[0042] Then proceed to B. The choice of the amount of flocculant, every 30 minutes, sample the clear juice after flocculation and clarification of sulfur-fumed neutralized juice, and measure the zeta potential value of the clear juice after flocculation and clarification o...

Embodiment 2

[0046] A method for adjusting the addition of flocculants to sulfur-fumed neutralized juice based on zeta potential value, the method uses the initial zeta potential value of sulfur-fumed neutralized juice as the basis for adding flocculants to sulfur-fumed neutralized juice:

[0047] The basic steps of the method are the same as those of step A in the first embodiment. The choice of flocculant type is to insert a rubber tube from the inlet hole of the sedimentation tank in the clarification process of the existing sugar making process, extract the sulfur-fumed neutralized juice once every 30 minutes, and measure its initial zeta potential value:

[0048] ①When the initial zeta potential value of sulfur-fumed neutralized juice is negative, use cationic flocculant;

[0049] ② When the initial zeta potential value of the sulfur-fumed neutralized juice is positive, an anionic flocculant is used.

[0050] In the first and second embodiments of the present invention, the cationic ...

Embodiment 3

[0053] A method for adjusting the proportioning ratio of flocculant added in sulfur-fumed neutralized juice based on the zeta potential value of the clear juice after flocculation and clarification of sulfur-fumed neutralized juice, the method is based on the zeta potential value of the clear juice after flocculation and clarification of sulfur-fumed neutralized juice Based on this, it guides the compounding of different flocculants to form a composite flocculant, which is easy to compress the electric double layer, and can quickly reduce the zeta potential of the clear juice after flocculation and clarification of the sulfur-fumed neutralized juice by means of electric neutralization and adsorption. The compound flocculant is the best compound;

[0054] The composite flocculant comprises a composite flocculant composed of polyaluminum chloride and chitosan or a composite flocculant composed of cationic polyacrylamine and polyaluminum chloride;

[0055] In the composite floccu...

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Abstract

The invention relates to a method for adjusting addition of flocculants in stoving neutral juice based on the zeta potential value. The method comprises the following steps of: based on the zeta initial potential value of the stoving neutral juice or the zeta potential value of clean juice after the stoving neutral juice is flocculated and clarified, adding types of flocculants in different use levels to the stoving neutral juice, and guiding compounding of different flocculants to form a compound flocculant; when the zeta initial potential value of the stoving neutral juice or the zeta potential value of clean juice is a negative value, selecting a cationic flocculant, and maintaining the zeta potential value Phi1 of the clean juice in the range: Phi1 is greater than or equal to -2.1 and less than or equal to -1.9; when the zeta initial potential value of the stoving neutral juice or the zeta potential value of clean juice is a positive value, selecting a anionic flocculant, and maintaining the zeta potential value Phi1 of the clean juice in the range: Phi2 is greater than or equal to -2.7 and less than or equal to -2.4. The method not only ensures that the stoving neutral juice has the optimal flocculating and clarifying effect, but also is material-saving, and the quality of cane sugar is improved.

Description

technical field [0001] The invention relates to a sugar making process, in particular to an improved sugarcane juice clarification process. Background technique [0002] The clarification process is the key process of the sub-method sugar production process. The effect of sulfur fumigation and juice flocculation clarification is directly related to the quality of clear juice, including color value, turbidity and sugar purity, which in turn affects the quality of white sugar products. In the sugar clarification process, add polyacrylamide flocculant to flocculate, clarify and remove impurities from the sulfur smoked juice. The amount of flocculant added is generally 3-10ppm. High or low flocculant dosage will affect the flocculation and clarification. Effect. In the actual production process, due to the fluctuation of raw material cane and related processes, the sulfur-fumigated juice is unstable, and the optimal amount of flocculant must be adjusted accordingly. Therefore, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13B20/00
Inventor 李利军李彦青黄永春崔越
Owner 上海中道糖业有限公司
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