CN102382911A - Method for preparing crystalline xylose by using bagasse pith as raw material - Google Patents
Method for preparing crystalline xylose by using bagasse pith as raw material Download PDFInfo
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- CN102382911A CN102382911A CN2011102809341A CN201110280934A CN102382911A CN 102382911 A CN102382911 A CN 102382911A CN 2011102809341 A CN2011102809341 A CN 2011102809341A CN 201110280934 A CN201110280934 A CN 201110280934A CN 102382911 A CN102382911 A CN 102382911A
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Abstract
The invention discloses a method for preparing crystalline xylose by using bagasse pith as a raw material and belongs to the field of crystalline xylose preparation. The method provided by the invention comprises the following processing steps of: hydrolysis, decolouring, first purification, pre-concentration, second purification, condensation and crystallization to obtain the crystalline xylose finished product. The method for preparing crystalline xylose can be used to effectively simplify the production technology of crystalline xylose, reduce the production cost, save energy, raise operation security, decrease pollution and raise the yield of crystalline xylose.
Description
Technical field
The present invention relates to the crystalline xylose preparation field, specifically a kind of method of utilizing the sugarcane marrow for the feedstock production crystalline xylose.
Background technology
Improving constantly of Along with people's standard of living, people are also become clear day by day to the concern of health, as the sugar alcohol of sugar substitute, are admitted by the human consumer gradually, and the Xylitol that especially sweet taste and sucrose are suitable more and more receives liking of people with exclusive characteristic.China is Xylitol production and big export country, and traditional Xylitol production is to be raw material with the corn cob, extracts wood sugar earlier, and wood sugar makes Xylitol through hydrogenation then.Along with the increase of Xylitol demand, also obtained corresponding development as the wood sugar of Xylitol raw material.Wood sugar also exports as non-caloric sweetener except that as the Xylitol raw material simultaneously.The steady progression of Xylitol manufacturing enterprise must have enough wood sugar raw material guarantee, and 1 ton of crystalline xylose approximately needs 8～10 tons of corn cobs, and this just needs enterprise to purchase corn cob in a large number; And the enough place storage of raw materials will be arranged, and the open-air placement of simultaneously big content of starting materials, wind and weather, of long duration; Not only can go mouldy, influence sugared yield, and can adhere to a large amount of dusts, the cleaning of going up raw material for production brings white elephant; Increased water loss greatly, and it is bar-shaped that corn cob is; Want to improve the wood sugar yield, before hydrolysis, needing has also increased cost consumption through pulverization process.Again because be the mass production of another exported product furfural of raw material with the corn cob in recent years; Emulatively rush to purchase corn cob; Simultaneously, corn cob can be used as fuel again and uses in the rural area, and above reason has all caused sharp rising of corn cob price; Thereby cause the wood sugar cost also along with raising, reduced the international competitiveness of Xylitol; In the patent No. is that maize peel is as the raw material of crystalline xylose, though also contain a certain amount of semicellulose in the maize peel in the patent of 200510082782.9 " method of preparing crystalline xylose by hydrolysis of maize peel "; But without containing a large amount of residual starches and albumen in the pretreated maize peel, residual starch produces a large amount of glucose through acid hydrolysis; Wood sugar content is reduced, thus be difficult to crystallization, if want to extract wood sugar; Need enzyme-added liquefaction of elder generation to remove starch, but, make and when separating the liquefaction slag, be difficult to filtration owing to proteic existence; Consuming time, the effort of this operation has increased cost consumption, and; Corn bran raw material is dispersed in the W-Gum factory of each provinces and regions, the whole nation, though raw material is easy to get, its transportation also has certain difficulty.So wood sugar, the Xylitol industry most pressing problem are exactly to seek a kind of new raw material to produce wood sugar now.
Summary of the invention
Technical assignment of the present invention provides a kind of method of utilizing the sugarcane marrow for the feedstock production crystalline xylose.
Technical assignment of the present invention realizes that by following mode the procedure of processing of this crystalline xylose is following:
1) hydrolysis: the ratio of sugarcane marrow raw material in mass ratio 1: 8～10 joined in the inorganic acid fluid, be hydrolyzed 1.5～3.0 hours at 90～115 ℃, the reducing sugar yield is 12～20% in the hydrolysate that obtains;
2) decolouring: in the time of 70～80 ℃,, make the destainer transparence 70～90% with mass percent 1～5% adding activated carbon decolorizing of the hydrolysate that obtains by the hydrolysate reducing sugar;
3) primary purification: destainer is through the male-female resins exchange, and the once exchange liquid transparence that obtains is 80～95%;
4) pre-concentration: with primary purification liquid evaporation pre-concentration to amount of dry matter percentage concentration is 15～25%;
5) secondary-cleaned: through male-female-negative resin exchange, the exchange liquid transparence that obtains is 100% with liquid concentrator;
6) concentrate: with secondary-cleaned liquid evaporation concentration to amount of dry matter percentage concentration is 80～90%;
7) crystallization: above-mentioned liquid concentrator is put into 60～65 ℃ water-bath crystallization, lower the temperature, be reduced to 25～35 ℃, carry out spinning, obtain the crystalline xylose finished product by 1 ℃/hour speed.
Described procedure of processing adopts a step decoloration process can reach subsequent request.
Need not to add crystal seed in the described procedure of processing crystallisation process and can carry out xylose crystalline.
Described inorganic acid fluid is the hydrochloric acid of mass percent concentration 1.0% or the sulfuric acid of mass percent concentration 2.0%.
A kind of sugarcane marrow that utilizes of the present invention is compared with prior art for the method for feedstock production crystalline xylose, has following beneficial effect:
1) be the raw material production crystalline xylose with the sugarcane marrow; Both overcome with the corn cob and stacked raw material and the serious problem of contamination of raw material for the raw material production crystalline xylose needs large stretch of place, having overcome again with the maize peel needs the pretreatment process of removal starch earlier for the raw material production crystalline xylose.
2) be the raw material production crystalline xylose with the sugarcane marrow, having overcome with corn cob and maize peel is raw material production crystalline xylose raw material dispersive shortcoming, and sugarcane marrow raw material is concentrated.
3) be the raw material production crystalline xylose with the sugarcane marrow, adopt hydrolysis under 90～115 ℃ of low temperature, having overcome corn cob must hydrolysis under 120 ℃～130 ℃ high temperature, has prevented the decomposition of wood sugar and the generation of side reaction, has improved the purity of wood sugar; And practiced thrift the energy, improved processing safety.
4) be the raw material production crystalline xylose with the sugarcane marrow, sugarcane marrow raw material is white in color, and the hydrolyzed solution pigment that obtains is low, and this had both saved gac in decolouring and IX, wastewater treatment process, has alleviated greatly again from handing over load, has reduced pollution.
5) be the raw material production crystalline xylose with the sugarcane marrow, sugarcane marrow raw material is powdery, and raw material can fully contact with acid in hydrolytic process, and hydrolysis is thorough, has improved the yield of wood sugar, overcome corn cob direct hydrolysis yield low, need a difficult problem through pulverizing.
6) be the raw material production crystalline xylose with the sugarcane marrow, the hydrolyzed solution wood sugar content that obtains is high, and this need not to add crystal seed in the xylose crystalline process promptly crystallizable.
Embodiment
Embodiment 1:
2kg sugarcane marrow raw material is joined in the hydrochloric acid of mass percent concentration 1.0% in 1: 8 ratio of mass ratio, be hydrolyzed 1.5 hours at 90 ℃, the reducing sugar yield is 12% in the hydrolysate that obtains; In the time of 70 ℃,, make the destainer transparence 70% with the mass percent 1% adding activated carbon decolorizing of the hydrolysate that obtains by the hydrolysate reducing sugar; Destainer is through the male-female resins exchange, and the once exchange liquid transparence that obtains is 80%; With primary purification liquid evaporation pre-concentration to amount of dry matter percentage concentration is 15%; Through male-female-negative resin exchange, the exchange liquid transparence that obtains is 100% with liquid concentrator; With secondary-cleaned liquid evaporation concentration to amount of dry matter percentage concentration is 80%, puts into 60 ℃ water-bath crystallization then, lowers the temperature by 1 ℃/hour speed, is reduced to 25 ℃, carries out spinning, obtains crystalline xylose finished product 0.119kg.
Embodiment 2:
2kg sugarcane marrow raw material is joined in the sulfuric acid of mass percent concentration 2.0% in 1: 10 ratio of mass ratio, be hydrolyzed 3.0 hours at 115 ℃, the reducing sugar yield is 20% in the hydrolysate that obtains; In the time of 80 ℃,, make the destainer transparence 90% with the mass percent 5% adding activated carbon decolorizing of the hydrolysate that obtains by the hydrolysate reducing sugar; Destainer is through the male-female resins exchange, and the once exchange liquid transparence that obtains is 95%; With primary purification liquid evaporation pre-concentration to amount of dry matter percentage concentration is 25%; Through male-female-negative resin exchange, the exchange liquid transparence that obtains is 100% with liquid concentrator; With secondary-cleaned liquid evaporation concentration to amount of dry matter percentage concentration is 90%, puts into 65 ℃ water-bath crystallization then, lowers the temperature by 1 ℃/hour speed, is reduced to 35 ℃, carries out spinning, obtains crystalline xylose finished product 0.120kg.
Embodiment 3:
2kg sugarcane marrow raw material is joined in the phosphoric acid of mass percent concentration 5.0% in 1: 9 ratio of mass ratio, be hydrolyzed 2 hours at 100 ℃, the reducing sugar yield is 16% in the hydrolysate that obtains; In the time of 75 ℃,, make the destainer transparence 80% with the mass percent 3% adding activated carbon decolorizing of the hydrolysate that obtains by the hydrolysate reducing sugar; Destainer is through the male-female resins exchange, and the once exchange liquid transparence that obtains is 85%; With primary purification liquid evaporation pre-concentration to amount of dry matter percentage concentration is 20%; Through male-female-negative resin exchange, the exchange liquid transparence that obtains is 100% with liquid concentrator; With secondary-cleaned liquid evaporation concentration to amount of dry matter percentage concentration is 85%, puts into 63 ℃ water-bath crystallization then, lowers the temperature by 1 ℃/hour speed, is reduced to 30 ℃, carries out spinning, obtains crystalline xylose finished product 0.1216kg.
Claims (2)
1. method of utilizing the sugarcane marrow for the feedstock production crystalline xylose is characterized in that procedure of processing is following:
1) hydrolysis: the ratio of sugarcane marrow raw material in mass ratio 1: 8～10 joined in the inorganic acid fluid, be hydrolyzed 1.5～3.0 hours at 90～115 ℃, the reducing sugar yield is 12～20% in the hydrolysate that obtains;
2) decolouring: in the time of 70～80 ℃, the hydrolysate that obtains is added activated carbon decolorizing by the mass percent of hydrolysate reducing sugar 1～5%, make the transparence of destainer 70～90%;
3) primary purification: destainer is through the male-female resins exchange, and the transparence that once exchanges liquid that obtains is 80～95%;
4) pre-concentration: with primary purification liquid evaporation pre-concentration to amount of dry matter percentage concentration is 15～25%;
5) secondary-cleaned: through male-female-negative resin exchange, the exchange liquid transparence that obtains is 100% with liquid concentrator;
6) concentrate: with secondary-cleaned liquid evaporation concentration to amount of dry matter percentage concentration is 80～90%;
7) crystallization: above-mentioned liquid concentrator is put into 60～65 ℃ water-bath crystallization, lower the temperature, be reduced to 25～35 ℃, carry out spinning, obtain the crystalline xylose finished product by 1 ℃/hour speed.
2. the method for utilizing the sugarcane marrow for the feedstock production crystalline xylose according to claim 1 is characterized in that described inorganic acid fluid is the hydrochloric acid of mass percent concentration 1.0% or the sulfuric acid of mass percent concentration 2.0%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102809341A CN102382911A (en) | 2011-09-21 | 2011-09-21 | Method for preparing crystalline xylose by using bagasse pith as raw material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102586496A (en) * | 2012-03-26 | 2012-07-18 | 山东福田药业有限公司 | Process for producing xylose |
| WO2013159263A1 (en) * | 2012-04-28 | 2013-10-31 | 广西大学 | Method for producing high purity l-arabinose using sugarcane pulp as raw material |
| CN103409565A (en) * | 2013-07-26 | 2013-11-27 | 山东福田药业有限公司 | Preparation technology of xylose |
| CN104046705A (en) * | 2014-06-30 | 2014-09-17 | 山东万盛环保科技发展有限公司 | Method of producing xylose and xylitol and co-producing L-arabinose by bagasse |
| CN108975317A (en) * | 2018-09-28 | 2018-12-11 | 广西科学院 | It is a kind of using sugarcane marrow as the preparation method of the graphene powder of the multiple petal form of raw material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1640881A (en) * | 2004-01-12 | 2005-07-20 | 邾立能 | Process for preparing xylose |
| CN101805378A (en) * | 2010-05-10 | 2010-08-18 | 安徽丰原发酵技术工程研究有限公司 | Method for extracting xylose from poly pentose acidolysis liquid |
-
2011
- 2011-09-21 CN CN2011102809341A patent/CN102382911A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1640881A (en) * | 2004-01-12 | 2005-07-20 | 邾立能 | Process for preparing xylose |
| CN101805378A (en) * | 2010-05-10 | 2010-08-18 | 安徽丰原发酵技术工程研究有限公司 | Method for extracting xylose from poly pentose acidolysis liquid |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102586496A (en) * | 2012-03-26 | 2012-07-18 | 山东福田药业有限公司 | Process for producing xylose |
| WO2013159263A1 (en) * | 2012-04-28 | 2013-10-31 | 广西大学 | Method for producing high purity l-arabinose using sugarcane pulp as raw material |
| CN103409565A (en) * | 2013-07-26 | 2013-11-27 | 山东福田药业有限公司 | Preparation technology of xylose |
| CN103409565B (en) * | 2013-07-26 | 2015-04-22 | 山东福田药业有限公司 | Preparation technology of xylose |
| CN104046705A (en) * | 2014-06-30 | 2014-09-17 | 山东万盛环保科技发展有限公司 | Method of producing xylose and xylitol and co-producing L-arabinose by bagasse |
| CN104046705B (en) * | 2014-06-30 | 2016-05-18 | 山东万盛环保科技发展有限公司 | A kind of bagasse is produced the method for wood sugar, xylitol and co-producing L-arabinose |
| CN108975317A (en) * | 2018-09-28 | 2018-12-11 | 广西科学院 | It is a kind of using sugarcane marrow as the preparation method of the graphene powder of the multiple petal form of raw material |
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Application publication date: 20120321 |