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Method for decolorizing sugar juice by using magnesium silicate film

A technology of magnesium silicate and sugar juice, which is applied in the purification of sugar juice, the use of physical methods to purify, and the production of sugar, to achieve the effects of no sulfite residue, uniform particle size distribution, and stable performance

Pending Publication Date: 2020-05-29
GUANGXI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

However, there is no report on the application of magnesium silicate membrane method to the decolorization of sugar juice.

Method used

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  • Method for decolorizing sugar juice by using magnesium silicate film
  • Method for decolorizing sugar juice by using magnesium silicate film
  • Method for decolorizing sugar juice by using magnesium silicate film

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Embodiment 1

[0018] Embodiment 1: a kind of method that sugar juice is carried out decolouring with magnesium silicate film, comprises the following steps:

[0019] (1) with MgCl 2 , NH 3 ·H 2 O and silica gel spheres were used as raw materials, and the magnesium silicate raw material was prepared by sacrificial template-hydrothermal synthesis method, that is, 4.8g of SiO 2 Put it in a beaker, add 60mL deionized water and ultrasonically mix it evenly for later use, take 5gNH 4 Cl was placed in another beaker, 60mL of deionized water was added, and MgCl was added at a mass ratio of silicon to magnesium of 1:0.5 while stirring. 2 •6H 2 0, add ammoniacal liquor 3mL and mix uniformly under stirring, then the two solutions are mixed uniformly under stirring, then adjust the pH value of the mixed solution with 0.5mol / L NaOH solution to be 9.3, put into the digestion tank, put into the digestion solution of the reaction solution The tank was placed in an oven, the reaction temperature was s...

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Abstract

The invention relates to a method for decolorizing sugar juice by using a magnesium silicate membrane, which comprises the following steps: preparing magnesium silicate by using a sacrificial template-hydrothermal method, preparing the magnesium silicate into a membrane, and filtering and decolorizing the sugar juice by using the magnesium silicate membrane. The magnesium silicate has the structural advantages that the magnesium silicate is formed by stacking nanosheets, the overall structure is porous and spherical, the particle size distribution is uniform, the performance is stable, and themagnesium silicate can be repeatedly used. By optimizing the preparation process of the porous magnesium silicate and the application of the membrane of the porous magnesium silicate, the decolorization rate of the porous magnesium silicate to syrup reaches 80% in the sugar juice decolorization process, and another technical scheme is provided for the sugar juice decolorization process in the sugar industry. According to the method, green and easily available silicate is used as a decolorizing agent, the method belongs to a sulfur-free sugar making process, efficient clarification and decolorization of the sugar juice can be realized without using toxic sulfur dioxide gas, and the problems of environmental pollution, sulfite residue and the like are avoided.

Description

technical field [0001] The invention relates to a method for decolorizing sugar juice, in particular to a method for decolorizing sugar juice with a magnesium silicate film. Background technique [0002] Phosphoric acid-sulfurous acid method is a process used by domestic sugar factories to clean sugar juice. It burns sulfur to produce sulfur dioxide to decolorize sugar juice, but its utilization rate is low, and the sulfur dioxide produced will pollute the environment. Research and development of green and efficient sugar-making new technologies and processes is the pursuit goal of the sugar industry. At present, the new technology of sugar juice cleaning mainly includes three kinds: adsorption, ion exchange and membrane separation. Among them, adsorption and ion exchange have good cleaning effects on sugar juice, but the currently used adsorbents (such as activated carbon, chitosan) and ion exchange resins have high production costs and will cause secondary pollution. Mem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13B20/16B01D71/02B01D67/00
CPCC13B20/165B01D71/02B01D67/0039
Inventor 程昊唐婷范黄文艺孙黎明孔红星
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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