Method for clarification and decoloration of raw sugar remolten syrup

A technology for syrup and raw sugar, applied in the production of sugar, purification of sugar juice, purification by physical methods, etc., can solve the problem of high cost of activated carbon, achieve high production efficiency, reduce pollution, and reduce main costs.

Inactive Publication Date: 2018-04-20
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the development of refined sugar technology, activated carbon was used to decolorize sugar liquid, but due to the high cost of activated carbon, it was gradually replaced by other decolorization methods

Method used

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  • Method for clarification and decoloration of raw sugar remolten syrup
  • Method for clarification and decoloration of raw sugar remolten syrup

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A method for clarification and decolorization of raw sugar redissolving syrup, comprising the following steps:

[0025] (1) Honey washing: use honey separator and molasses to spray and wash raw sugar to remove large particles of impurities and some pigments on the surface of raw sugar;

[0026] (2) Dissolving: dissolving raw sugar or raw sugar washed with honey to 55°Bx in hot water, heating to 70°C, and keeping warm;

[0027] (3) Activated carbon adsorption: add activated carbon with a dry solid content of 1%, and react at 60°C for 30 minutes to obtain a resolvable syrup;

[0028] (4) Ceramic membrane filtration: use a ceramic membrane module with an average membrane pore size of 0.02 μm to filter the remelted syrup to obtain clear syrup. The operating parameters of the ceramic membrane are: the transmembrane pressure difference is 0.25MPa, and the membrane surface flow rate is 3.5m / s , the operating temperature is 50°C;

[0029] (5) Decolorization and desalination o...

Embodiment 2

[0036] A method for clarification and decolorization of raw sugar redissolving syrup, comprising the following steps:

[0037] (1) Honey washing: use honey separator and molasses to spray and wash raw sugar to remove large particles of impurities and some pigments on the surface of raw sugar;

[0038] (2) Dissolving: dissolving raw sugar or raw sugar washed with honey to 65°Bx in hot water, heating to 80°C, and keeping warm;

[0039] (3) Activated carbon adsorption: add activated carbon with a dry solid content of 2%, and react at 80°C for 40 minutes to obtain a resolvable syrup;

[0040] (4) Ceramic membrane filtration: use a ceramic membrane module with an average membrane pore size of 0.5 μm to filter the remelted syrup to obtain clear syrup. The operating parameters of the ceramic membrane are: the transmembrane pressure difference is 0.50 MPa, and the membrane surface flow rate is 5.0m / s , the operating temperature is 80°C;

[0041] (5) Decolorization and desalination o...

Embodiment 3

[0048] A method for clarification and decolorization of raw sugar redissolving syrup, comprising the following steps:

[0049] (1) Honey washing: use honey separator and molasses to spray and wash raw sugar to remove large particles of impurities and some pigments on the surface of raw sugar;

[0050] (2) Dissolving: dissolve the raw sugar or the raw sugar washed with honey to 45°Bx in hot water, heat to 60°C, and keep warm;

[0051] (3) Activated carbon adsorption: add activated carbon with a dry solid content of 0.1%, and react at 40-80°C for 20-40 minutes to obtain a resolvable syrup;

[0052](4) Ceramic membrane filtration: use a ceramic membrane module with an average membrane pore size of 0.005 μm to filter the re-dissolved syrup to obtain clear syrup. The operating parameters of the ceramic membrane are: the transmembrane pressure difference is 0.10MPa, and the membrane surface flow rate is 2.0m / s , the operating temperature is 20°C;

[0053] (5) Decolorization and de...

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Abstract

The invention discloses a method for clarification and decoloration of raw sugar remolten syrup. The method comprises the following steps: spraying raw sugar through a honey extractor and molasses, soas to remove large-particle impurities and part of pigment on the surface of the raw sugar; dissolving the raw sugar or the raw sugar washed by the molasses with hot water; adding activated carbon with the content being 0.1 to 2 percent relative to dry solid substance, so as to obtain remolten syrup; filtering the remolten syrup with a ceramic membrane component with the average membrane pore size being 0.005 to 0.5 micrometers, so as to obtain clear syrup; feeding the clear syrup obtained from a juice outlet of the ceramic membrane component into a first ion exchange resin tower to perform decoloration, so as to obtain first penetrating fluid; feeding the first penetrating fluid into a second ion exchange resin tower to perform desalination, so as to obtain penetrating fluid namely discolored refined syrup. The technology has the advantages that an activated carbon coupled film separation process separation is used to replace carbon dioxide carbonation and a plate and frame filteringsystem, the product quality is improved, the cost is reduced, the equipment consumption and floor space are reduced, and the load of the ion exchange resin towers is greatly reduced.

Description

technical field [0001] The invention relates to a method for clarification and decolorization of raw sugar redissolving syrup in two-step sugar production, which belongs to the technical field of food processing. technical background [0002] With the progress of society, people have higher and higher requirements for the quality of sugar. Especially in terms of the color value, purity, and ash content of sugar, the ordinary farmland first-grade white granulated sugar has long been unable to meet the market demand. At present, the refined sugar factory mainly adopts the two-step method to produce refined sugar. The main process is: the raw sugar is washed with honey, dissolved, introduced into carbon dioxide, and then added with lime milk for full filling. Full filling has a certain decolorization effect, and full filling After that, the syrup is filtered through a plate and frame filter press, which can remove most of the impurities. The syrup after filling is decolorized...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13B20/12C13B20/14C13B20/16
CPCC13B20/123C13B20/14C13B20/16C13B20/165
Inventor 李凯史昌蓉谢彩锋杭方学陆海勤徐勇士周昊
Owner GUANGXI UNIV
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