CN110499395A - The extracting method of high yield pulp1 hemicellulose xylose - Google Patents
The extracting method of high yield pulp1 hemicellulose xylose Download PDFInfo
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- CN110499395A CN110499395A CN201910809161.8A CN201910809161A CN110499395A CN 110499395 A CN110499395 A CN 110499395A CN 201910809161 A CN201910809161 A CN 201910809161A CN 110499395 A CN110499395 A CN 110499395A
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- hemicellulose
- xylose
- high yield
- acidulants
- lye
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- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13K—SACCHARIDES OBTAINED FROM NATURAL SOURCES OR BY HYDROLYSIS OF NATURALLY OCCURRING DISACCHARIDES, OLIGOSACCHARIDES OR POLYSACCHARIDES
- C13K13/00—Sugars not otherwise provided for in this class
- C13K13/002—Xylose
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- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Organic Chemistry (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
The present invention relates to xylose extractive technique fields in viscose rayon raw material, it is a kind of extracting method of high yield pulp1 hemicellulose xylose, it is carried out as steps described below: pulp and lye are mixed with dipping except after impurity, obtain secondary lye, secondary lye is separated by membrane technology, extracted, dried, and hemicellulose powder is obtained；Sulfuric acid is uniformly mixed with hemicellulose powder, obtains mixed liquor；Mixed liquor is acidified under water bath condition, obtains acidulants；Water is added into acidulants, cooling, suction filtration, obtains high yield pulp1 hemicellulose xylose after acidulants hydrolysis.The present invention in viscose rayon production, carries out technology processing by being mixed with dipping the hemicellulose powder extracted to pulp and lye, extracts wherein high-quality resource hemicellulose xylose, wherein hemicellulose xylose yield can reach 84% for the first time.Present invention reduces the wastes of by-product hemicellulose extra in production process of viscose fiber, improve the value of by-product hemicellulose in viscose rayon production.
Description
Technical field
The present invention relates to xylose extractive technique fields in viscose rayon raw material, are a kind of mentioning for high yield pulp1 hemicellulose xylose
Take method.
Background technique
Hemicellulose is a kind of good resource, is the heteromultimer being made of several different types of monosaccharide, these
Sugar is pentose and hexose, including xylose, arabinose and galactolipin etc..Hemicellulose xylan Zhan in lignum is total
The 50% of amount dissolves in aqueous slkali, the part plant polyose susceptible to hydrolysis far beyond cellulose after chance is sour.It is hydrolyzed in hemicellulose
Xylose out can be made into xylitol after processing, can do sweetener, plasticizer, surfactant etc..
Production process of viscose fiber is raw material, raw material main component alpha cellulose, content's index using chemical fiber pulp
>=92%, remaining ingredient mainly has ash content, hemicellulose, pentosan etc..In recent years, pass through corncob, bagasse mostly both at home and abroad
It is used Deng its hemicellulose is extracted, but extracts hemicellulose in viscose glue industry, production process of viscose fiber steeping liquor
The technology industry of xylose waits to develop in plain powder.
Summary of the invention
The present invention provides a kind of extracting method of high yield pulp1 hemicellulose xylose, overcome the above-mentioned prior art no
Foot, can provide in production process of viscose fiber, and high yield pulp1 extracts the side of the xylose in hemicellulose powder in sheet steeping lye
Method.
The technical scheme is that realized by following measures: a kind of extraction side of high yield pulp1 hemicellulose xylose
Method carries out as steps described below: pulp is mixed with dipping with lye and dissolves out impurity, obtains secondary lye, secondary alkali by the first step
Liquid is separated by membrane technology, extracted, dried, and hemicellulose powder is obtained；Second step mixes the desired amount of sulfuric acid and hemicellulose powder
It closes uniformly, obtains mixed liquor, wherein 1g hemicellulose powder is added in every 4ml sulfuric acid；Third step, by mixed liquor at 30 DEG C to 40
DEG C water bath condition under be acidified 2.0h to 2.5h, obtain acidulants；4th step the desired amount of water is added into acidulants, 120
DEG C to it is cooling after acidulants hydrolysis 60min to 90min under the conditions of 125 DEG C, filter, obtain high yield pulp1 hemicellulose xylose.
Here is the further optimization and/or improvements to invention technology described above scheme:
Above-mentioned sulfuric acid mass percent concentration is 40% to 50%.
Above-mentioned pulp is one of wood pulps, Cotton Pulp, bamboo pulp.
In above-mentioned 4th step, by the water that 80mL to 100mL is added in every 3 grams of acidulants.
The present invention for the first time in viscose rayon production, by pulp and lye be mixed with dipping the hemicellulose powder extracted into
The processing of row technology, extracts wherein high-quality resource hemicellulose xylose, wherein hemicellulose xylose yield can reach 84%.This
Invention reduces the waste of extra by-product hemicellulose in production process of viscose fiber, improves by-product in viscose rayon production
The value of object hemicellulose.
Specific embodiment
The present invention is not limited by the following examples, can determine according to the technique and scheme of the present invention with actual conditions specific
Embodiment.It is previously mentioned various chemical reagent and chemical article in the present invention unless otherwise specified, is public in the prior art
Know common chemical reagent and chemical article；Percentage in the present invention does not have specified otherwise such as, is mass percent；This hair
It is the aqueous solution that solvent is water, for example, hydrochloric acid solution is aqueous hydrochloric acid solution if the solution in bright is without specified otherwise；This
Room temperature, room temperature in invention refer generally to 15 DEG C to 25 DEG C of temperature, are commonly defined as 25 DEG C.
The present invention will be further described below with reference to examples:
Embodiment 1: the extracting method of the high yield pulp1 hemicellulose xylose carries out as steps described below: the first step, by pulp and alkali
Liquid hybrid infusion dissolves out impurity, obtains secondary lye, and secondary lye is separated by membrane technology, extracted, dried, and obtains hemicellulose
Plain powder；The desired amount of sulfuric acid is uniformly mixed with hemicellulose powder, obtains mixed liquor by second step, wherein adds in every 4ml sulfuric acid
Enter 1g hemicellulose powder；Mixed liquor is acidified under 30 DEG C to 40 DEG C of water bath condition 2.0h to 2.5h, is acidified by third step
Object；The desired amount of water is added into acidulants for 4th step, and acidulants hydrolyze 60min to 90min under the conditions of 120 DEG C to 125 DEG C
Cooling afterwards, suction filtration, obtains high yield pulp1 hemicellulose xylose.
The present invention with purified pulp (wood pulps, Cotton Pulp, bamboo pulp) be raw material, during producing viscose rayon,
It usually requires to remove the impurity in raw material.Due to purified pulp main component be alpha cellulose, content's index >=92%,
Remaining ingredient mainly has ash content, hemicellulose, pentosan etc., is generally dissolved out its impurity using soda-dip pulp, dissolution
Impurity is the mixed alkali liquor of hemicellulose and other impurities, and be otherwise known as secondary lye, secondary lye by membrane technology separate,
It extracts, drying, obtains hemicellulose powder；Hemicellulose powder is by converting half fiber with the sour process for being further acidified, hydrolyzing
Tie up plain xylose.
Embodiment 2: the extracting method of the high yield pulp1 hemicellulose xylose carries out as steps described below: the first step, by pulp
It is mixed with dipping with lye and dissolves out impurity, obtain secondary lye, secondary lye is separated by membrane technology, extracted, dried, and obtains half
Cellulose powder；The desired amount of sulfuric acid is uniformly mixed with hemicellulose powder, obtains mixed liquor, wherein every 4ml sulfuric acid by second step
Middle addition 1g hemicellulose powder；Mixed liquor is acidified under 30 DEG C or 40 DEG C of water bath condition 2.0h or 2.5h, obtained by third step
Acidulants；The desired amount of water is added into acidulants for 4th step, under the conditions of 120 DEG C or 125 DEG C acidulants hydrolysis 60min or
Cooling after 90min, suction filtration, obtains high yield pulp1 hemicellulose xylose.
Embodiment 3: as the optimization of above-described embodiment, sulfuric acid mass percent concentration is 40% to 50%.
In the present invention, hemicellulose powder hydrolysis xylose efficiency is significant, and the excessively high monosaccharide degradation of sulfuric acid concentration eventually leads to xylose
Yield decline.
Embodiment 4: as the optimization of above-described embodiment, pulp is one of wood pulps, Cotton Pulp, bamboo pulp.
Embodiment 5: as the optimization of above-described embodiment, in the 4th step, by 80mL to 100mL is added in every 3 grams of acidulants
Water.
Embodiment 6: the extracting method of the high yield pulp1 hemicellulose xylose carries out as steps described below: the first step, by cotton pulp
The dregs of rice are mixed with dipping with lye and dissolve out impurity, obtain secondary lye, and secondary lye is separated by membrane technology, extracted, dried, obtained
Hemicellulose powder；1.2ml sulfuric acid is uniformly mixed with 0.3g hemicellulose powder, obtains mixed liquor, wherein sulfuric acid matter by second step
Measuring percent concentration is 45%；Mixed liquor is acidified 2.5h under 35 DEG C of water bath condition, obtains acidulants by third step；4th
87mL water is added into 3g acidulants for step, and cooling, suction filtration after acidulants hydrolysis 60min, obtains high yield pulp1 under the conditions of 121 DEG C
Hemicellulose xylose, high yield pulp1 hemicellulose xylose recovery rate is 84.2% in the present embodiment.
Embodiment 7: the extracting method of the high yield pulp1 hemicellulose xylose carries out as steps described below: the first step, by cotton pulp
The dregs of rice are mixed with dipping with lye and dissolve out impurity, obtain secondary lye, and secondary lye is separated by membrane technology, extracted, dried, obtained
Hemicellulose powder；1.2ml sulfuric acid is uniformly mixed with 0.3g hemicellulose powder, obtains mixed liquor, wherein sulfuric acid matter by second step
Measuring percent concentration is 45%；Mixed liquor is acidified 2h under 35 DEG C of water bath condition, obtains acidulants by third step；4th step,
80mL water is added into 3g acidulants, cooling, suction filtration after acidulants hydrolysis 60min, obtains high yield pulp1 half fiber under the conditions of 121 DEG C
Plain xylose is tieed up, high yield pulp1 hemicellulose xylose recovery rate is 84.3% in the present embodiment.
Embodiment 8: the extracting method of the high yield pulp1 hemicellulose xylose carries out as steps described below: the first step, by cotton pulp
The dregs of rice are mixed with dipping with lye and dissolve out impurity, obtain secondary lye, and secondary lye is separated by membrane technology, extracted, dried, obtained
Hemicellulose powder；1.2ml sulfuric acid is uniformly mixed with 0.3g hemicellulose powder, obtains mixed liquor, wherein sulfuric acid matter by second step
Measuring percent concentration is 45%；Mixed liquor is acidified 2.5h under 35 DEG C of water bath condition, obtains acidulants by third step；4th
100mL water is added into 3g acidulants for step, and cooling, suction filtration after acidulants hydrolysis 60min, obtains high yield pulp1 under the conditions of 121 DEG C
Hemicellulose xylose, high yield pulp1 hemicellulose xylose recovery rate is 84.1% in the present embodiment.
According to the hemicellulose xylose that embodiment 6,7 and 8 obtains, in high performance liquid chromatograph measurement, available hair
Bright hemicellulose xylose recovery rate can reach 84% or more.
In conclusion the present invention for the first time in viscose rayon production, passes through half for being mixed with dipping and extracting to pulp and lye
Cellulose powder carries out technology processing, extracts wherein high-quality resource hemicellulose xylose, wherein hemicellulose xylose yield can
Reach 84%.Present invention reduces the wastes of by-product hemicellulose extra in production process of viscose fiber, improve viscose rayon
The value of by-product hemicellulose in production.
The above technical features constitute embodiments of the present invention, can basis with stronger adaptability and implementation result
Actual needs increases and decreases non-essential technical characteristic, to meet the needs of different situations.
Claims (4)
1. a kind of extracting method of high yield pulp1 hemicellulose xylose, it is characterised in that carry out as steps described below: the first step will starch
The dregs of rice are mixed with dipping with lye and dissolve out impurity, obtain secondary lye, and secondary lye is separated by membrane technology, extracted, dried, obtained
Hemicellulose powder；The desired amount of sulfuric acid is uniformly mixed with hemicellulose powder, obtains mixed liquor, wherein every 4ml sulphur by second step
1g hemicellulose powder is added in acid；Mixed liquor is acidified under 30 DEG C to 40 DEG C of water bath condition 2.0h to 2.5h, obtained by third step
To acidulants；The desired amount of water is added into acidulants for 4th step, and acidulants hydrolyze 60min under the conditions of 120 DEG C to 125 DEG C
Cooling after to 90min, suction filtration, obtains high yield pulp1 hemicellulose xylose.
2. the extracting method of high yield pulp1 hemicellulose xylose according to claim 1, it is characterised in that sulfuric acid quality percentage
Specific concentration is 40% to 50%.
3. the extracting method of high yield pulp1 hemicellulose xylose according to claim 1 or 2, it is characterised in that pulp is wood pulp
One of the dregs of rice, Cotton Pulp, bamboo pulp.
4. the extracting method of high yield pulp1 hemicellulose xylose according to claim 1 or 2 or 3, it is characterised in that the 4th step
In, by the water that 80mL to 100mL is added in every 3 grams of acidulants.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111996296A (en) * | 2020-09-15 | 2020-11-27 | 无锡绿色分离应用技术研究所有限公司 | Environment-friendly method for extracting xylose from hemicellulose |
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|---|---|---|---|---|
| US4681935A (en) * | 1984-04-02 | 1987-07-21 | Enso-Gutzeit Oy | Procedure for recovering soluble carbohydrates contained in wood |
| US20050203291A1 (en) * | 2004-03-11 | 2005-09-15 | Rayonier Products And Financial Services Company | Process for manufacturing high purity xylose |
| CN102643935A (en) * | 2012-04-11 | 2012-08-22 | 宜宾丝丽雅股份有限公司 | Method for preparing xylose by using squeezed waste alkali liquor in viscose fiber production process |
| CN104017917A (en) * | 2014-06-19 | 2014-09-03 | 山东福田药业有限公司 | Xylose production process |
| CN104099431A (en) * | 2014-08-01 | 2014-10-15 | 沈阳新华环境工程有限公司 | Method for extracting xylose from viscoce chemical fiber squeezed alkali liquor |
| CN105969916A (en) * | 2016-07-20 | 2016-09-28 | 宜宾雅泰生物科技有限公司 | Method for preparing xylose by taking squeezed alkali liquid obtained in production of viscose as raw material |
| CN106191325A (en) * | 2016-07-06 | 2016-12-07 | 宜宾雅泰生物科技有限公司 | The technique that a kind of press lye produced with viscose rayon prepares xylose for raw material |
| CN106555014A (en) * | 2016-12-02 | 2017-04-05 | 浙江华康药业股份有限公司 | A kind of technique that xylose is prepared as raw material with viscose rayon press lye |
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2019
- 2019-08-29 CN CN201910809161.8A patent/CN110499395A/en active Pending
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| CN102643935A (en) * | 2012-04-11 | 2012-08-22 | 宜宾丝丽雅股份有限公司 | Method for preparing xylose by using squeezed waste alkali liquor in viscose fiber production process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111996296A (en) * | 2020-09-15 | 2020-11-27 | 无锡绿色分离应用技术研究所有限公司 | Environment-friendly method for extracting xylose from hemicellulose |
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Application publication date: 20191126 |