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Purification agent for decolour in making sugar, purification method for declour of sugar juice and technology for directing producing fine white sugar thereof

A detergent and decolorization technology, which is applied in sucrose production, sugar production, sugar juice purification, etc., can solve the problems of post-process influence, inconvenient operation, and high price, so as to improve the quality of sugar products and achieve good removal effect , The effect of light decolorization burden

Inactive Publication Date: 2005-01-05
广西天人科技开发有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] From the above-mentioned published documents, although the above-mentioned various decolorization clarifiers and decolorization clarification methods have their own advantages, they also have shortcomings. The ion exchange method is due to the high price of imported resins and the technical blockade of foreign countries. The exchange resin technology is backward, and there is no qualitative breakthrough in product quality; some solid decolorizers or clarifying agents are not widely available, which has an impact on the subsequent process; ultrafiltration technology is also inconvenient to operate due to the high viscosity of syrup

Method used

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  • Purification agent for decolour in making sugar, purification method for declour of sugar juice and technology for directing producing fine white sugar thereof
  • Purification agent for decolour in making sugar, purification method for declour of sugar juice and technology for directing producing fine white sugar thereof
  • Purification agent for decolour in making sugar, purification method for declour of sugar juice and technology for directing producing fine white sugar thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] Example 1 Preparation of sugar decolorizing detergent containing high molecular weight aluminum polymer

[0083] Raw material preparation:

[0084] (1) Metal aluminum: There is no limit to the shape and specification, mostly in block shape, with a purity of 97% or more.

[0085] (2) Metal mixture: a small amount of iron powder, zinc powder, manganese powder, copper powder, mercury.

[0086] (3) Hydrochloric acid: qualified product.

[0087] (4) Sodium sulfide (industrial grade)

[0088] (5) Activated carbon powder (industrial grade)

[0089] step:

[0090] (1) Manually wipe off the oxide layer on the surface of the aluminum block, subject to the nature of the aluminum.

[0091] (2) The aluminum block from which the surface oxide layer is removed is completely immersed in a 0.5-6N HCl solution for 30 seconds. A large number of bubbles are generated on the surface of the aluminum block to activate the aluminum block.

[0092] (3) Place the activated aluminum block in the meta...

Embodiment 2

[0098] Example 2 Molecular weight analysis of high molecular weight aluminum polymer

[0099] Method: NMR spectrum analysis combined with scanning electron microscopy

[0100] result:

[0101] 1. NMR spectrum analysis

[0102] Sample: one part each of the white powder and colorless transparent liquid prepared in Example 1

[0103] Apparatus and test method: Superconducting nuclear magnetic resonance spectrometer AVANCE 400digital NMR from Bruker, Germany. 27 Al resonance frequency is 104.26MHz, measured with CP / MAS probe 27 Al solid spectrum, multi-core probe BBO measurement 27 Al liquid spectrum, the reference is 1M AlCl aqueous solution.

[0104] The measurement results:

[0105] (1) Example 1 CP / MAS of solid powder 27 Al-NMR spectrum: The influence of rotating sidebands is taken from this spectrum at different speeds (3K, 5K, 7K). It can be seen that the resonance absorption of Al in the two samples at about 2ppm and 69ppm is in line with the polyaluminum chloride The case of t...

Embodiment 3

[0109] Example 3 Preparation and molecular weight distribution of aluminum polymers with different Al:OH:Cl

[0110] Raw materials: see Example 1.

[0111] Step 1 is the same as the above. Step 2 is treated with 5N HCl to control the reaction time. Step 3 is properly treated with a metal mixture. Step 4 uses 2N HCl solution. The ratio of aluminum to hydrochloric acid solution is 1:8. Control the reaction temperature and time until the alumina is consumed. The final product was determined to contain about 60% of polymerized macromolecules or colloidal particles with a molecular weight of more than 50,000, about 40% of polynuclear hydroxyaluminum complexes with a molecular weight of less than 10,000, and no hexahydrate hydrated aluminum particles and mononuclear hydroxyaluminum complexes. The basicity is 90%. It can be made into solid powder as required.

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Abstract

The invention provides a sugar-making decolorizing purifier, containing a high-molecular weight aluminum polymer shown by the general formula: Ala(OH)bXc, where X is selected from one or several ones of monovalent or bivalent acid radical ions: Cl-, ClO-, ClO4-, Br-, NO3-, SO42-, H2PO4-, HPO42-, HCOO- and CH3COO-, and the ratio of a to b to c = 1 : 2.1 : 0.9 -1 : 2.9 : 0.1. It contains 20-60% macromolecular polymer or colloid particles with molecular weight 5X10 to the power 4-1X10 to the power 5, 40-80% multinuclear hydroxy aluminic complex polymer with molecular weight less than 1X10 to the power 4, and 0-10% hexaccordianted hydrated aluminum ions or mononuclear hydroxy aluminic complex. Its basicity is 70-93%. It can be applied to decolorizing and purifying process of different-stage and different-color value sugar juices. It has high decoloration ratio, good effect of eliminate colloids, improving sugar product quality and can directly produce refined white sugars by sugarcane, sugar beets, etc.

Description

Technical field [0001] The invention relates to the sugar industry, in particular to a decolorizing detergent used in the sugar industry, a method for decolorizing and cleaning sugar liquid, and a process for improving the quality of sugar products and directly producing refined white sugar. Background of the invention [0002] In the sugar industry, the problem of decolorization and clarification (cleanliness) of sugar liquid is an important factor related to product quality. Take sugar cane sugar as an example. The color value of white granulated sugar produced by any sugar factory is due to a certain amount of sucrose crystals. Caused by the pigment. These pigments exist in sucrose crystals in two forms: one is encapsulated in the crystal body; the second is adsorbed on the surface of the crystal body. Generally speaking, molasses pigments adsorbed on the surface of crystals can be removed by pumping water and steam. It is impossible to remove the pigments contained in the cry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13B20/00
Inventor 李敏雷觉先
Owner 广西天人科技开发有限责任公司
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