Method for refining xylose hydrolysate

A technology for xylose hydrolyzate and residual liquid, applied in the field of functional sugar, can solve problems such as large water consumption, clogging of electrode membrane stacks, breakage and other problems, saving acid and alkali consumption and water consumption, low maintenance cost, desalination good effect

Active Publication Date: 2015-05-06
SHANDONG FUTASTE
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Problems solved by technology

However, xylose hydrolyzate contains a large amount of calcium and magnesium ions. During the operation of electrodialysis, there will be problems such as blockage and leakage of the electrode membrane stack in the concentrated water chamber, fouling of the electrode plate, breakage, and large water consumption.
The maintenance cost is relatively high, so electrodialysis is not suitable for the treatment of high-salt hydrolyzate

Method used

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  • Method for refining xylose hydrolysate
  • Method for refining xylose hydrolysate
  • Method for refining xylose hydrolysate

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Embodiment Construction

[0029] Using 10 independent separation chambers in series (such as figure 1 shown), such as figure 1 As shown, from left to right are separation chambers 1-10, and each separation chamber has independent pipelines and valves for feeding, water inlet, extracting liquid, and raffinate (partial enlarged view of separation chambers 1 and 2 See figure 2 , the pipes and valves of other separation chambers are basically the same as separation chambers 1 and 2). In the normal production process, the material is fed first in the whole system, and the separation curve is formed through the circulation pump, and the circulation flow in the whole circulation system is 39.1m 3 / h water inflow is 7m 3 / h, the feed rate is 4m 3 / h, refraction (equivalent to the concentration of dry matter) 45%; the output of the extract (the enriched sugar-containing part in the solution) is 3.75m 3 / h, the refraction is 26%; the amount of the raffinate (the part of the solution enriched with impurity ...

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Abstract

The invention provides a method for refining xylose hydrolysate. The method includes: utilizing the different adsorption capacity of absorbent resin on carbohydrates and ions to separate sugar from foreign ions, and then reducing the conductivity of the material fluid from 20000 microsiemens / cm to about 1000 microsiemens / cm. The more foreign ions in liquid sugar, the better desalting effect. The method provided by the invention is especially suitable for separation of high conductivity material liquid. And in the invention, the sugar recovery rate is not less than 95%. Compared with traditional technologies, a lot of acid and alkali consumption and water consumption can be saved, and the repair and maintenance cost is low.

Description

technical field [0001] The invention belongs to the technical field of functional sugars, in particular to a method for refining xylose hydrolyzate. Background technique [0002] Existing methods for removing impurity ions and pigments from xylose hydrolyzate include ion exchange and electrodialysis. [0003] The principle of ion exchange is to exchange the ions in the solid ion exchanger with the ions in the dilute solution to achieve the purpose of extracting or removing some ions in the solution. It is a unit operation belonging to the mass transfer separation process. Ion exchange is a reversible equivalent exchange reaction that requires acid-base regeneration. [0004] The content of impurity ions in the xylose hydrolyzate is very high, and the conductivity is as high as 15000 us / cm. Multiple sets of ion exchange processes must be used in the xylose refining process, yang-yin-yang, yin-yang-yin. The conductivity is high, the exchange burden of the ion exchange column...

Claims

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Application Information

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IPC IPC(8): B01D15/18C13K13/00C13K1/00C07H1/06C07H3/02
Inventor 王星云赵静静孙鲁王成福聂圣才刘晓娟张亮
Owner SHANDONG FUTASTE
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