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Purification method of starch sugar

A purification method and technology of starch sugar, which is applied in the field of starch sugar processing, can solve problems such as production abnormalities, adverse environmental effects, and introduction of insoluble impurities, and achieve the effects of saving treatment costs, prolonging the filtration cycle, and being beneficial to environmental protection

Active Publication Date: 2017-05-31
广州双桥(重庆)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the decolorization process, activated carbon is easy to produce "black sugar" with the outflow of sugar liquid, and introduce insoluble impurities, resulting in abnormal production
Activated carbon after use is usually discarded directly as solid waste, which has an adverse impact on the environment

Method used

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  • Purification method of starch sugar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] (1) KDF50 candle filter is filled with clean water at 80°C and exhausted. Fill the pre-coating tank with about 2 / 3 liquid level of clean water at 80°C and add 45kg of cellulose and 15kg of diatomaceous earth. Stir for 15 minutes and set the parameters (pre-coating tank) Coating flow is 20m 3 / h, the precoating time is 30min, and the cycle time is 15min) Precoat the cellulose and diatomaceous earth on the filter candle to form a composite precoat.

[0061] (2) to starch sugar liquid (glucose dry basis is 15.62%wt, and maltose dry basis is 13.20%wt, transmittance is 50.2%, chromaticity is 65.53IU, dry matter content is 20.0%wt, protein, grease and crude fiber The total amount is 0.50%wt of the starch sugar solution) Add diatomaceous earth according to 0.15%wt, stir for 30min, at 80°C with 0.2m 3 / (m 2 The speed of h) is introduced into the filter candle from the liquid inlet of the candle filter, and the filtrate is obtained from the liquid outlet of the candle filter. ...

Embodiment 2

[0064] (1) KDF50 candle filter is filled with clean water at 65°C and exhausted. Fill the pre-coating tank with about 2 / 3 liquid level of clean water at 65°C and add 40kg of cellulose and 20kg of diatomaceous earth. Stir for 15 minutes and set the parameters (pre-coating tank). Coating flow is 20m 3 / h, the precoating time is 30min, and the cycle time is 15min) Precoat the cellulose and diatomaceous earth on the filter candle to form a composite precoat.

[0065] (2) to the starch sugar solution (glucose dry basis is 0.91%wt, maltose dry basis is 46.85%wt, transmittance is 82.6%, chroma is 50.05IU, dry matter content is 35.5%wt, protein, oil and crude fiber The total amount is 0.10%wt of the starch sugar solution) Add diatomaceous earth according to 0.1%wt, stir for 30min, 3 / (m 2 The speed of h) is introduced into the filter candle from the liquid inlet of the candle filter, and the filtrate is obtained from the liquid outlet of the candle filter.

[0066] (3) The filtrate...

Embodiment 3

[0068] (1) KDF50 candle filter is filled with clear water at 50°C and exhausted. Fill the pre-coating tank with about 2 / 3 liquid level of clear water at 50°C and add 36kg of cellulose and 24kg of diatomaceous earth. Stir for 15 minutes and set the parameters (pre-coating tank). Coating flow is 20m 3 / h, the precoating time is 30min, and the cycle time is 15min) Precoat the cellulose and diatomaceous earth on the filter candle to form a composite precoat.

[0069] (2) to the starch sugar solution (the dry basis of glucose is 39.83%wt, the dry basis of fructose is 55.67%, the dry basis of maltose is 0.22%wt, the transmittance is 95.0%, the chroma is 33.89IU, and the dry matter content is 60.0%wt , the total amount of protein, oil and crude fiber is 0.05%wt of the starch sugar solution) add diatomaceous earth according to 0.015%wt, stir for 30min, at 50 ℃ with 0.8m 3 / (m 2 The speed of h) is introduced into the filter candle from the liquid inlet of the candle filter, and the f...

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Abstract

The invention discloses a purification method of starch sugar. The purification method comprises the following steps: (1) coating a compound precoat layer on a filter candle of a candle filter, wherein the compound precoat layer consists of cellulose and diatomite; (2) adding diatomite into a starch sugar solution, performing stirring for 30min, and then introducing the mixture into the filter candle from a liquid inlet of the candle filter to ensure that insoluble impurities in the starch sugar solution are intercepted and adsorbed, and a filtrate is obtained from a liquid outlet of the candle filter; and (3) decolorizing and refining the filtrate through an ion exchange resin system to obtain purified starch sugar, wherein the ion exchange resin system is formed by connecting a weak base anion resin column, a strong acid cation resin column and a weak base anion resin column in series. Compared with a conventional process, the starch sugar obtained by the method provided by the invention has a lower content of the insoluble particles, a lower chroma and a higher brightness, the cycle use of a decoloring assistant is achieved, the process is simplified, and the discharge of solid wastes and the generation of wastewater in a filtration process are reduced, so that the preparation method is beneficial for reduction of product production cost and environmental protection.

Description

technical field [0001] The invention belongs to the field of starch sugar processing, in particular to a method for purifying starch sugar. Background technique [0002] The purification of starch sugar includes the steps of clarification and filtration, decolorization and ion exchange refining. [0003] In the prior art, the main method of clarification and filtration of starch sugar is to add diatomaceous earth to starch sugar and then use plate and frame press filtration to remove insoluble impurities and diatomite to obtain clarified starch sugar liquid. Plate and frame filter press requires the use of filter cloth. After filtering, due to the adhesion of some viscous substances, the filter cloth is difficult to clean thoroughly. Reuse will have a negative impact on the quality of starch sugar. [0004] At present, activated carbon is usually used as a decolorizing agent in the starch sugar industry, and the physical characteristics of activated carbon are used to absor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13K1/08
CPCC13K1/08
Inventor 罗建勇叶晓蕾许永苗周彦斌郭峰李碧珠陈志颖万振平周海军
Owner 广州双桥(重庆)有限公司
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