CN103015244A - Method for quickly extracting cellulose from xylitol production waste - Google Patents
Method for quickly extracting cellulose from xylitol production waste Download PDFInfo
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- CN103015244A CN103015244A CN 201210512679 CN201210512679A CN103015244A CN 103015244 A CN103015244 A CN 103015244A CN 201210512679 CN201210512679 CN 201210512679 CN 201210512679 A CN201210512679 A CN 201210512679A CN 103015244 A CN103015244 A CN 103015244A
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- xylitol
- waste residue
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- production waste
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Abstract
The invention discloses a method for quickly extracting cellulose from xylitol production waste. The method comprises the following steps of: mixing the xylitol production waste with new ion liquid, and putting the mixture to a reaction kettle; controlling the temperature of the reaction kettle to 100 DEG C to 150 DEG C; filtering and centrifuging the mixture to obtain cellulose extracting solution after reacting for 60-80 minutes; adding water, volume of which is 10 times that of the extracting solution, to the extracting solution, so that the soluble cellulose is separated out; filtering the solution to collect the product and drying the product to obtain the cellulose. The method provided by the invention can recycle the xylitol production waste, so that the environment-friendly pressure is relieved, the economic benefits are created, and the requirements of national energy conservation and emission reduction and sustainable development are satisfied.
Description
Technical field
The invention belongs to technical field of functional sugar production, be specifically related to a kind of xylitol and produce the cellulosic method of rapid extraction in the waste residue.
Technical background
Xylitol is to be obtained through operations such as hydrolysis, purification, hydrogenation by corncob, and in xylitol was produced, the comprehensive utilization of corncob hydrolysis residue was the difficult problem of xylitol industry always.At present, the every annual meeting of domestic xylitol production industry produces a large amount of residues, if directly be discharged in the environment, will cause very large pollution and waste.Because its main component is cellulose and lignin, if therefore can therefrom extract cellulose, huge economic worth, environmental value and far-reaching social effect will be produced.
Present cellulosic extracting method mainly is by the alkali lye boiling method, the method not only energy consumption is high, and can cause environmental pollution, and the method a large amount of chemical industry discarded object of meeting generation in pulping process, be power consumption, time-consuming and it is reclaimed, processes.Therefore existing the urgent need wanted a kind of environmental protection, and technique is simple, the extracting method of reaction condition gentleness.
Summary of the invention
The objective of the invention is for solve the existing good energy consumption of cellulose extracting method, production process produces a large amount of problems such as chemical industry discarded object, the invention provides a kind of simple to operate, environmental protection, production cost is low, reaction condition is gentle produces from xylitol and extract cellulosic method the waste residue.
Technical solution of the present invention is: a kind of xylitol is produced the cellulosic method of rapid extraction in the waste residue.May further comprise the steps:
(1) moisture is produced waste residue less than 5% xylitol and mixes with new ionic liquid and place reactor, wherein newly the use amount of ionic liquid is 1 ~ 2 times of xylitol production waste residue in mass;
(2) temperature of reaction kettle rises to 100 ℃ ~ 120 ℃, reacts 60 ~ 80 minutes;
(3) with mixture filtration, centrifugal, the liquid mixture that obtains was cellulosic extract after reaction finished;
(4) add the water of 10 times of volumes in the extract, stirs after 10 minutes and filter, precipitation after drying must cellulose, and collection of ions liquid can reuse after the purification.
New ionic liquid described in the above-mentioned steps (1) is one or both the mixture in 1,3-dialkylimidazolium, the N – alkyl pyridine.The extracting mode of ionic liquid is extraction process preferably, temperature is controlled at the reflux temperature of this ionic liquid mixture.
Reactor described in the above-mentioned steps (1) is with agitating device, and the speed of agitator during reaction is 1000rpm.
Good effect of the present invention is the effective trans-utilization problem that has solved solid residue in the present xylitol production, solid residue is used for extracting cellulose, the raw material corncob is fully used, improved economic benefit, reduce the environmental protection pressure of industry, and extracting method of the present invention is simple to operate, environmental protection, reaction condition gentle, extracts can reuse after reagent reclaims, and has therefore obviously reduced production cost.
The specific embodiment
Embodiment 1
Moisture is produced waste residue less than 5% xylitol mix with 1,3-dialkylimidazolium and place reactor, wherein the use amount of new ionic liquid is 2 times of xylitol production waste residue in mass; Temperature of reaction kettle rises to 120 ℃, opens simultaneously stirring system, and speed of agitator is 1000rpm, reacts 70 minutes; Reaction finishes, and mixture filters after being cooled to room temperature, centrifugal, and the liquid mixture that obtains is cellulosic extract, add the water of 10 times of volumes in the extract, stirs after 10 minutes and filter, precipitation after drying must cellulose, collection of ions liquid can reuse after the purification.
Embodiment 2
Moisture is produced waste residue less than 5% xylitol mixes with N – alkyl pyridine and place reactor, wherein newly the use amount of ionic liquid is 2 times of xylitol production waste residue in mass; Temperature of reaction kettle rises to 100 ℃, opens simultaneously stirring system, and speed of agitator is 1000rpm, reacts 80 minutes; Reaction finishes, and mixture filters after being cooled to room temperature, centrifugal, and the liquid mixture that obtains is cellulosic extract, add the water of 10 times of volumes in the extract, stirs after 10 minutes and filter, precipitation after drying must cellulose, collection of ions liquid can reuse after the purification.
Embodiment 3
Moisture is produced waste residue and 1 of mixed in equal amounts less than 5% xylitol, and 3-dialkylimidazolium and N – alkyl pyridine mix and place reactor, and wherein the use amount of new ionic liquid is 1 times of xylitol production waste residue in mass; Temperature of reaction kettle rises to 110 ℃, opens simultaneously stirring system, and speed of agitator is 1000rpm, reacts 60 minutes; Reaction finishes, and mixture filters after being cooled to room temperature, centrifugal, and the liquid mixture that obtains is cellulosic extract, add the water of 10 times of volumes in the extract, stirs after 10 minutes and filter, precipitation after drying must cellulose, collection of ions liquid can reuse after the purification.
Above-described embodiment is not as a limitation of the invention, all any modifications of doing within the scope of the invention, is equal to replacement, improvement etc., all belongs to protection scope of the present invention.
Claims (4)
1. produce the cellulosic method of rapid extraction the waste residue from xylitol for one kind, it is characterized in that: extracting method may further comprise the steps:
(1) xylitol is produced waste residue and is mixed with new ionic liquid and place reactor, wherein the use amount of new ionic liquid is 1 ~ 2 times of xylitol production waste residue in mass;
(2) temperature of reaction kettle rises to 100 ℃ ~ 120 ℃, reacts 60 ~ 80 minutes;
(3) with mixture filtration, centrifugal, the liquid mixture that obtains was cellulosic extract after reaction finished;
(4) add the water of 10 times of volumes in the extract, stirs after 10 minutes and filter, precipitation after drying must cellulose.
2. as claimed in claim 1ly produce the cellulosic method of rapid extraction the waste residue from xylitol, it is characterized in that: described new ionic liquid is one or both the mixture in 1,3-dialkylimidazolium, the N – alkyl pyridine.
3. as claimed in claim 1ly produce the cellulosic method of rapid extraction the waste residue from xylitol, it is characterized in that: the described reactor of step (1) is with agitating device, and the speed of agitator during reaction is 1000rpm.
4. as claimed in claim 1ly produce the cellulosic method of rapid extraction the waste residue from xylitol, it is characterized in that: the described xylitol of step (1) is produced waste residue need dry to moisture and mix with ionic liquid after 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210512679 CN103015244A (en) | 2012-12-05 | 2012-12-05 | Method for quickly extracting cellulose from xylitol production waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210512679 CN103015244A (en) | 2012-12-05 | 2012-12-05 | Method for quickly extracting cellulose from xylitol production waste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103015244A true CN103015244A (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210512679 Pending CN103015244A (en) | 2012-12-05 | 2012-12-05 | Method for quickly extracting cellulose from xylitol production waste |
Country Status (1)
| Country | Link |
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| CN (1) | CN103015244A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10759727B2 (en) | 2016-02-19 | 2020-09-01 | Intercontinental Great Brands Llc | Processes to create multiple value streams from biomass sources |
| CN114808510A (en) * | 2022-05-17 | 2022-07-29 | 南京工业大学 | Method for extracting high-purity cellulose material from xylitol residues by using ionic liquid |
-
2012
- 2012-12-05 CN CN 201210512679 patent/CN103015244A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10759727B2 (en) | 2016-02-19 | 2020-09-01 | Intercontinental Great Brands Llc | Processes to create multiple value streams from biomass sources |
| US11840500B2 (en) | 2016-02-19 | 2023-12-12 | Intercontinental Great Brands Llc | Processes to create multiple value streams from biomass sources |
| CN114808510A (en) * | 2022-05-17 | 2022-07-29 | 南京工业大学 | Method for extracting high-purity cellulose material from xylitol residues by using ionic liquid |
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Application publication date: 20130403 |