Membrane technology-based refined sugar clear-syrup impurity removal and decoloring technology

A technology for refining sugar and membrane technology, which is applied in the field of refining sugar and clarified syrup removing impurities and decolorization process, can solve the problems of high investment and operation cost, complicated brine post-treatment process, and aggravated sucrose reducing sugar decomposition, etc., and achieves investment cost and operation cost. Low cost, beneficial to crystallization, and the effect of reducing color value
CN104404174AInactive Publication Date: 2015-03-11GUANGXI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGXI UNIV
Publication Date
2015-03-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a membrane technology-based refined sugar clear-syrup impurity removal and decoloring technology. The technology comprises the following steps of carrying out press filtration on syrup to obtain clear syrup, before evaporation, feeding the clear syrup to a microfiltration device, carrying out microfiltration on the clear syrup by a microfiltration device to obtain a microfiltred concentrate liquid and a microfiltred penetrating liquid, removing the microfiltred concentrate liquid, collecting the microfiltred penetrating liquid, feeding the microfiltred penetrating liquid into a ultrafiltration device, carrying out further condensation treatment on the primary ultrafiltration concentrate liquid, carrying out sterilization to obtain a sugar liquid, and feeding the last ultrafiltration concentrate liquid into follow-up processes of sugar refining. The technology does not produce a waste liquid, is free of a chemical reagent, has no damage to the human body, improves syrup purity, reduces syrup turbidity and is conducive to crystallization.
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Description

technical field

[0001] The invention belongs to the field of food processing, in particular to a process for removing impurities and decolorizing refined sugar clarified syrup based on membrane technology. Background technique

[0002] The production process indicators of refined sugar are higher than those of high-quality white sugar, and the requirements for product quality are also higher. Refined sugar is produced by redissolving, clarifying, decolorizing and crystallizing raw sugar. The conventional production process currently adopted is as follows: raw sugar containing a large amount of non-sugar impurities such as pigment, pectin, starch and phenolic substances is obtained from sugarcane through pressing, primary purification, impurity removal, crystallization and separation steps. The refined sugar factory redissolves the raw sugar, adds lime slurry, fills the flue gas, and utilizes the CO in the flue gas 2 React with lime to produce precipitate, absorb impurities...

Claims

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