CN103113424A - Decoloration method of xylose hydrolysis fluid - Google Patents
Decoloration method of xylose hydrolysis fluid Download PDFInfo
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- CN103113424A CN103113424A CN201310084025XA CN201310084025A CN103113424A CN 103113424 A CN103113424 A CN 103113424A CN 201310084025X A CN201310084025X A CN 201310084025XA CN 201310084025 A CN201310084025 A CN 201310084025A CN 103113424 A CN103113424 A CN 103113424A
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Abstract
The invention relates to a decoloration method of xylose hydrolysis fluid. The decoloration method comprises the steps of: respectively placing adsorbent resins with weak acid basic groups of acrylic acid series in three fixed columns, backwashing the adsorbent resins by softened water till water is clear, draining the water in the columns, and sequentially adding the xylose hydrolysis fluid to the first column, the second column and the third column in a counter-flow manner. According to the decoloration method, the exchange adsorption capacity of the adsorbent resins with the weak acid basic groups of the acrylic acid series is fully used through a continuous counter-flow decoloration manner of series connection of the two columns and standby application of the one column, so that the purity of liquid glucose can be improved, labor environments are improved, and the production cost is reduced. The decoloration method is a clean production method for preparation of xylose.
Description
Technical field
The present invention relates to a kind of method of decolouring of xylose hydrolysis fluid.
Background technology
At present, the production technique of wood sugar is mainly take corn cob as raw material at present, through hydrolysis, neutralization, decolouring, from hand over, the operations such as concentrated, crystallization, separation, Xylose after hydrolysis carries out decolorization and purification with gac, decolouring is indispensable operation in the xylose production process, but consumes a large amount of gacs, wood sugar consumption gac 150kg per ton, workload is very large and environment is abominable, is unfavorable for field management.
Summary of the invention
The purpose of this invention is to provide and be conducive to the cleaner production environment, reduce production costs, improve the decoloring method of a kind of xylose hydrolysis fluid of product purity
The technical scheme that the present invention takes is: a kind of decoloring method of xylose hydrolysis fluid is characterized in that it comprises the steps: A, the polymeric adsorbent with the weak acid group of acrylic acid series is respectively charged in three fixing posts; B, with the resinite accumulated amount of softening water 0.5～1.5BV/h to the polymeric adsorbent backwash to clear water; C, water in post is drained, first add xylose hydrolysis fluid from first post reflux type, flow is the resin volume of 1～3BV/h, and effluent liquid printing opacity 〉=80% is collected into lower operation; D, be connected serially to second post when first post discharging printing opacity＜80%, reflux type, flow are the resin volume of 1-3BV/h, and effluent liquid printing opacity 〉=80% is collected into lower operation; E, disconnect first post when second post discharging printing opacity＜80%, add three posts of material parallel-series to the from second post, reflux type, flow is the resin volume of 1-3BV/h, effluent liquid printing opacity 〉=80% is collected into lower operation, and the liquid glucose in first post pushes up front operation with the softening water concurrent simultaneously; F, with the post that water top sugar finishes, with softening water 2～3BV/h resin volumetric flow rate backwash 20～40min, then drain water in post; G, adopt the NaOH solution of 40～60 ℃ of concentration 2.5～4% and temperature, with 0.5～1.5BV/h resin volumetric flow rate, polymeric adsorbent is carried out manipulation of regeneration, then time 5～2h carries out drip washing to pH＜9 with softening water 2～3BV/h resin volumetric flow rate to the decolorization adsorption resin; H, the HCL with 0.5～1% or H
2SO
4Solution, to the polymeric adsorbent acidification, then time 0.5～2h carries out drip washing to pH＜7 with softening water 2～3BV/h resin volumetric flow rate to polymeric adsorbent with 1～3BV/h resin volumetric flow rate, and it is standby that polymeric adsorbent can be done next time.
Adopt the present invention, use by two post series connection, the continuous countercurrent decolouring mode that post is standby, take full advantage of the exchange adsorption ability with the polymeric adsorbent of weak acid group of acrylic acid series, can improve liquid glucose purity, improving work situation, reduce production costs, is a kind of clean preparation method for preparing wood sugar.
Embodiment
Below in conjunction with implementing, the present invention is described in further detail.It comprises the following steps:
One, with ZGDTS(being a kind of polymeric adsorbent with the weak acid group of acrylic acid series) polymeric adsorbent is respectively charged in three fixing posts;
Two, with the resinite accumulated amount of softening water 0.5～1.5BV/h to the backwash of ZGDTS polymeric adsorbent to clear water;
Three, water in post is drained, first add xylose hydrolysis fluid from first post reflux type, flow is the resin volume of 1～3BV/h, and effluent liquid printing opacity 〉=80% is collected into lower operation;
Four, be connected serially to second post when first post discharging printing opacity＜80%, reflux type, flow are the resin volume of 1-3BV/h, and effluent liquid printing opacity 〉=80% is collected into lower operation;
Five, disconnect first post when second post discharging printing opacity＜80%, add three posts of material parallel-series to the from second post, reflux type, flow is the resin volume of 1-3BV/h, effluent liquid printing opacity 〉=80% is collected into lower operation, and the liquid glucose in first post pushes up front operation with the softening water concurrent simultaneously;
Six, with the post of water top sugar end, with softening water 2～3BV/h resin volumetric flow rate backwash 20～40min, then drain water in post;
Seven, adopt the NaOH solution of 40～60 ℃ of concentration 2.5～4% and temperature, with 0.5～1.5BV/h resin volumetric flow rate, the ZGDTS polymeric adsorbent is carried out manipulation of regeneration, then time 5～2h carries out drip washing to pH＜9 with softening water 2～3BV/h resin volumetric flow rate to the ZGDTS polymeric adsorbent;
Eight, with 0.5～1% HCL or H
2SO
4Solution, to ZGDTS polymeric adsorbent acidification, then time 0.5～2h carries out drip washing to pH＜7 with softening water 2～3BV/h resin volumetric flow rate to the ZGDTS polymeric adsorbent with 1～3BV/h resin volumetric flow rate, and it is standby that the ZGDTS polymeric adsorbent is done next time.
Claims (1)
1. the decoloring method of an xylose hydrolysis fluid is characterized in that it comprises the steps: A, the polymeric adsorbent with the weak acid group of acrylic acid series is respectively charged in three fixing posts; B, with the resinite accumulated amount of softening water 0.5～1.5BV/h to the polymeric adsorbent backwash to clear water; C, water in post is drained, first add xylose hydrolysis fluid from first post reflux type, flow is the resin volume of 1～3BV/h, and effluent liquid printing opacity 〉=80% is collected into lower operation; D, be connected serially to second post when first post discharging printing opacity＜80%, reflux type, flow are the resin volume of 1-3BV/h, and effluent liquid printing opacity 〉=80% is collected into lower operation; E, disconnect first post when second post discharging printing opacity＜80%, add three posts of material parallel-series to the from second post, reflux type, flow is the resin volume of 1-3BV/h, effluent liquid printing opacity 〉=80% is collected into lower operation, and the liquid glucose in first post pushes up front operation with the softening water concurrent simultaneously; F, with the post that water top sugar finishes, with softening water 2～3BV/h resin volumetric flow rate backwash 20～40min, then drain water in post; G, adopt the NaOH solution of 40～60 ℃ of concentration 2.5～4% and temperature, with 0.5～1.5BV/h resin volumetric flow rate, polymeric adsorbent is carried out manipulation of regeneration, then time 5～2h carries out drip washing to pH＜9 with softening water 2～3BV/h resin volumetric flow rate to the decolorization adsorption resin; H, the HCL with 0.5～1% or H
2SO
4Solution, to the polymeric adsorbent acidification, then time 0.5～2h carries out drip washing to pH＜7 with softening water 2～3BV/h resin volumetric flow rate to polymeric adsorbent with 1～3BV/h resin volumetric flow rate, and it is standby that polymeric adsorbent can be done next time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310084025XA CN103113424A (en) | 2013-03-18 | 2013-03-18 | Decoloration method of xylose hydrolysis fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310084025XA CN103113424A (en) | 2013-03-18 | 2013-03-18 | Decoloration method of xylose hydrolysis fluid |
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| CN103113424A true CN103113424A (en) | 2013-05-22 |
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| CN201310084025XA Pending CN103113424A (en) | 2013-03-18 | 2013-03-18 | Decoloration method of xylose hydrolysis fluid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109761754A (en) * | 2019-01-24 | 2019-05-17 | 西安海润新材料有限公司 | A kind of discoloration method of Xylitol mother liquor |
| WO2021120770A1 (en) * | 2019-12-19 | 2021-06-24 | 浙江华康药业股份有限公司 | Xylose hydrolyzate decolorizing and filtering device and xylose hydrolyzate decolorizing and filtering method using same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001046089A (en) * | 1999-08-10 | 2001-02-20 | Ajinomoto Co Inc | Production of xylitol |
| CN1442489A (en) * | 2003-03-27 | 2003-09-17 | 南京大学 | Decolouring method of hydrolytic neutralization liquid in xylose production process |
| CN101096376A (en) * | 2006-06-26 | 2008-01-02 | 黄广民 | Method for purifying D-xylose and xylooligosacchrides from coconut hard shell acid hydrolysate |
| CN101372700A (en) * | 2008-07-24 | 2009-02-25 | 上海交通大学 | Method for extracting L-arabinose from xylose mother liquor and biomass acid hydrolysis solution |
| CN202226866U (en) * | 2011-09-20 | 2012-05-23 | 山东福田药业有限公司 | Wood sugar hydrolysate decoloring system device |
-
2013
- 2013-03-18 CN CN201310084025XA patent/CN103113424A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001046089A (en) * | 1999-08-10 | 2001-02-20 | Ajinomoto Co Inc | Production of xylitol |
| CN1442489A (en) * | 2003-03-27 | 2003-09-17 | 南京大学 | Decolouring method of hydrolytic neutralization liquid in xylose production process |
| CN101096376A (en) * | 2006-06-26 | 2008-01-02 | 黄广民 | Method for purifying D-xylose and xylooligosacchrides from coconut hard shell acid hydrolysate |
| CN101372700A (en) * | 2008-07-24 | 2009-02-25 | 上海交通大学 | Method for extracting L-arabinose from xylose mother liquor and biomass acid hydrolysis solution |
| CN202226866U (en) * | 2011-09-20 | 2012-05-23 | 山东福田药业有限公司 | Wood sugar hydrolysate decoloring system device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109761754A (en) * | 2019-01-24 | 2019-05-17 | 西安海润新材料有限公司 | A kind of discoloration method of Xylitol mother liquor |
| WO2021120770A1 (en) * | 2019-12-19 | 2021-06-24 | 浙江华康药业股份有限公司 | Xylose hydrolyzate decolorizing and filtering device and xylose hydrolyzate decolorizing and filtering method using same |
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Application publication date: 20130522 |