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Method and device for removing salt in xylose fermentation liquor

A fermented liquid and xylose technology, applied in sugar production, ion exchange column/bed method, sugar production, etc., can solve the problems of low utilization rate of resin exchange capacity, shortened service life of resin, increase of regeneration reagents, etc., to achieve Energy saving, consumption reduction, frequency reduction effects

Inactive Publication Date: 2013-02-06
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the vast majority of domestic ion exchange technologies are single-column ion-exchange processes. After the ion-exchange column is penetrated, the adsorption cannot continue. However, there are still some resins in the column that have not been completely exchanged with ion impurities. Defects such as frequent regeneration caused by the urgent need for regeneration after cross-column penetration
With the increase of the regeneration frequency of the resin in the separation column, not only the regeneration reagent required will also increase, but also the resin is easily damaged due to frequent contact with the regeneration reagent, thus shortening the service life of the resin

Method used

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  • Method and device for removing salt in xylose fermentation liquor
  • Method and device for removing salt in xylose fermentation liquor
  • Method and device for removing salt in xylose fermentation liquor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The cation exchange column (1cm in diameter and 20cm in height) is filled with 001×4 resin (resin bed height 5cm) of the same quality. After pretreatment, the refraction of the xylose fermentation liquid is 20, and the conductivity is 3000μs / cm. The feed flow rate of the liquid was 5 cm / min.

[0022] Step 1: first convert the cation exchange resin 001×4 into a hydrogen form with hydrochloric acid, so that it has the ability to absorb cationic impurities in the xylose fermentation broth, and then wash it with deionized water until neutral.

[0023] Step 2 opens the feed valve 4 and the discharge valve 8 of the 1# separation column 5, closes the connection valve 6 between the separation columns, and then opens the constant-flow pump 2 to convert the pretreated xylose fermented liquid from the raw material liquid Storage tank 1 introduces 1# separation column 5, and the effluent directly passes into cation exchange product storage tank 10 (i.e. anion exchange raw material ...

Embodiment 2

[0026] The anion exchange column (diameter is 1cm, height is 20cm) is filled with D301 resin (resin bed height 6cm) of the same quality, after cation exchange pretreatment, the refraction of the xylose fermentation liquid is 20, and the conductivity is 12000μs / cm, The feed flow rate of the raw material liquid was 5 cm / min.

[0027] Step 1: First, use sodium hydroxide to convert the anion exchange resin D301 into a hydrogen-oxygen type, so that it has the ability to absorb anionic impurities in the xylose fermentation broth, and then wash it with deionized water to neutrality.

[0028] Step 2 opens the feed valve 4 and the discharge valve 8 of the 1# separation column 5, closes the connection valve 6 between the separation columns, and then opens the constant-flow pump 2 to convert the pretreated xylose fermented liquid from the raw material liquid The storage tank 1 introduces the 1# ion exchange column 5, and the effluent is directly passed into the anion exchange product sto...

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Abstract

The invention relates to a method for removing salt in xylose fermentation liquor. By utilizing an ion exchange column series technology, impurity ions in solution are separated to obtain xylose liquor without salt. The method comprises the following specific execution steps: taking the pretreated xylose fermentation liquor as a raw material, quickly carrying out series connection after cation exchange columns are penetrated, realizing the saturated adsorption of cation exchange resin through the series connection of the cation exchange columns in sequence and obtaining qualified cation exchange solution; and taking the qualified cation exchange solution as a raw material, quickly carrying out series connection after anion exchange columns are penetrated, realizing the saturated adsorption of anion exchange resin through the series connection of the anion exchange columns in sequence and obtaining xylose liquor without salt.

Description

technical field [0001] The invention relates to a method and a device for separating salt in starch sugar fermentation liquid, in particular to a technology for efficiently and environmentally friendly removing the salt in xylose fermentation liquid by skillfully using a detachment column series process. Background technique [0002] The ion exchange resin method has the advantages of high desalination efficiency, reusable resin, and simple operation, and is widely used in the industrial production of desalination of starch sugar solution. At present, the vast majority of domestic ion exchange technologies are single-column ion-exchange processes. After the ion-exchange column is penetrated, the adsorption cannot continue. However, there are still some resins in the column that have not been completely exchanged with ion impurities. Defects such as frequent regeneration caused by the urgent need for regeneration after cross-column penetration. As the regeneration frequency ...

Claims

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Application Information

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IPC IPC(8): B01J47/02C13K13/00B01J47/04
Inventor 张军伟刘志维王弦
Owner JIANGNAN UNIV
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