CN102433359A - Method for pretreating biomass - Google Patents
Method for pretreating biomass Download PDFInfo
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- CN102433359A CN102433359A CN2011103341201A CN201110334120A CN102433359A CN 102433359 A CN102433359 A CN 102433359A CN 2011103341201 A CN2011103341201 A CN 2011103341201A CN 201110334120 A CN201110334120 A CN 201110334120A CN 102433359 A CN102433359 A CN 102433359A
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- biomass
- thaw
- freezing
- pretreated method
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Abstract
The invention relates to a method for pretreating biomass. According to the method, the cost and the pollution to the environment can be reduced and the ethanol fermentation pretreatment of the biomass is improved. The method comprises the following steps of: firstly, removing foreign matters from the biomass, cleaning and crushing the biomass into powder; secondly, adding clear water and naturally freezing; thirdly, unfreezing; fourthly, stirring and grinding and then adding enzyme or other hydrolytic agents such as hydrocellulose and hemicellulose; and fifthly, filtering, wherein the filtrate is used for fermenting ethanol, and filter residue is original lignin.
Description
One, technical field:
The present invention relates to a kind of working method of bioenergy, especially relate to the pretreated method of a kind of biomass, it utilizes the freezing pre-treatment agricultural crop straw of weather condition and wood chip and weeds.
Two, background technology:
In the background technology, the biomass preconditioning technique of realizing Mierocrystalline cellulose, the effective hydrolysis of semicellulose in the biomass is that present biomass ferment is produced the alcoholic acid key.Lack the suitable extensive pretreated method under a kind of cheapness, less contamination, the mild conditions at present.
The energy consumption of gas explosion technology is high, and acid-alkali treatment not only equipment cost is high, and secondary pollution is serious, not only contaminate environment but also produce the toxic substance that suppresses ethanol fermentation.Biological process length consuming time, weak effect.
Lignocellulose alcohol fuel production urgent need is a kind of can significantly to reduce biomass pre-treatment cost, gets rid of the pre-treatment new technology that adds the material of perhaps newborn inhibition ethanol fermentation microbial process because of pre-treatment.
Freeze-thaw technology is widely used in cell wall breaking.The indoors artificial freeze-thaw technology can promote that Mierocrystalline cellulose, semicellulose become monose in the enzymolysis stalk.
Such pre-treatment does not need high temperature and organic solvent, has avoided xylogen secondary and cellulosic combination again and self has condensed again, and is low to the acid-fast alkali-proof requirement of pre-processing device.But the energy expenditure that realizes freezing required artificial cooling has increased cost again, has limited this technological heavy industrialization and has used.
The winter low temperature phase on ground such as China northeast, Inner Mongol is long, and is not enough always to freezing naturally industrial utilization.The a large amount of biomass resource of the annual generation in these areas.
In the winter time, during the routine of forest and stalk biomass is stacked, because the wax layer on biomass surface stops rainwater to immerse, the freezing damaged surface that only appears at wood chip and stalk, deep layer place even the waste heat that also can releasing microbe ferments and bring.
Three, summary of the invention:
The present invention provides a kind of biomass pretreated method in order to solve the weak point in the above-mentioned background technology, and it can reduce cost and environmental pollution, improves the pre-treatment of biomass ethanol fermentation.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is:
The pretreated method of a kind of biomass is characterized in that may further comprise the steps:
(1) biomass is removed foreign matter, clean, be crushed into Powdered;
(2) add clear water, freezing naturally;
(3) thaw:
(4) stir, grind the back and add enzyme or other hydrolytic reagent hydrocellulose and semicellulose;
(5) filter, filtrating is used for ethanol fermentation, and filter residue is the log quality.
In the step (2), freezing naturally is temperature condition.For example can drop to the geographic winter climate condition below-20 ℃.
In the step (3), thaw for thaw naturally or manual work thaw.
Biomass comprise stalk, timber or weeds.
Pretreated biomass are used for the production of all biomass Mierocrystalline celluloses, semicellulose and lignin product.
Compared with prior art, the advantage and the effect that have of the present invention is following:
1, the present invention does not need high pressure, high temperature and artificial cooling.
2, the present invention does not produce the secondary substance of black liquid and inhibition yeast ethanol fermentation.
3, the present invention can obtain the log quality.
4, the present invention is fit to scale operation.
5, cost of the present invention is low, and is easy to use.
Four, embodiment:
The present invention is the pretreated methods of a kind of biomass, and concrete technology is: in the winter time, can drop to the area below-20 ℃ at temperature, utilize nature freezing biomass such as stalk are carried out freezing on a large scale.Go up, thaw naturally at temperature and after manual work thaws, begin to carry out the hydrolysis of the enzymolysis or the alternate manner of biomass.With the wheat stalk is example: after removing foreign matters such as dust, metal, plastics, the cutting stalk becomes fragment and promotes the biomass suction.Put into low temperature resistant container, on a small quantity, repeatedly add clear water and constantly stirring, no longer absorb water until stalk.At the initial stage of nature between ice period, proceed appropriateness and stir.After arriving spring, freezing stalk begins to thaw, and perhaps manual work is melted.Stalk after thawing gets into the enzymolysis stage, perhaps uses the further hydrolysis of other method.Biomass comprise all agricultural crop straws, grass, timber and fiber-like plant.
Principle of the present invention is: volume can increase behind isopyknic water freezing, the freezing back volume retraction that melts.Therefore can be used to destroy cell walls.Straw after the suction, cauline leaf cell can imbibition occur because of the inclusion suction after suction; After freezing because of in the cell with the increase of the water freezing volume of periphery; Volume after the freezing thawing can dwindle once more; Thereby cause cell walls and peripheral structure to be torn, the crystalline texture of the organic matter that xylogen, Mierocrystalline cellulose and semicellulose form is damaged.Compare with the delignification of pulping and paper-making; The pre-treatment purpose of biomass ethanol fermentation is the natural structure between each component of biomass of will relaxing; Generate alcoholic acid monose condition is provided for enzymatic hydrolysis Mierocrystalline cellulose and semicellulose wherein becomes to ferment; Xylogen can continue to stay in hydrolyzed solution and the fermented liquid under not influencing polysaccharide hydrolysis and fermentation state, to the last recycles.
Embodiment 1:
Wheat stalk is crushed into Powdered, stirs while add clear water in the cement flooring, till stalk powder no longer absorbed water, low temperature below-20 ℃ kept 12 hours, then thawing naturally at room temperature.After in insulating container, the stalk after melting being carried out brute force stirring, add the enzymolysis of cellulase and hemicellulase again.Monose in the filtrate filtered behind cellulose, the hydrolysis of hemicellulose, filter residue are the log quality.
Embodiment 2:
The wheat wood chip is crushed into Powdered, puts in the pond suction 12 hours, gets rid of unnecessary water, kept 12 hours at low temperature below-20 ℃, then thawing naturally at room temperature.Stalk after will melting again stirs, and grinds pulping, gets into thereafter enzymolysis or the hydrolysis of alternate manner again.
Claims (5)
1. pretreated method of biomass is characterized in that may further comprise the steps:
(1) biomass is removed foreign matter, clean, be crushed into Powdered;
(2) add clear water, freezing naturally;
(3) thaw:
(4) stir, grind the back and add enzyme or other hydrolytic reagent hydrocellulose and semicellulose;
(5) filter, filtrating is used for ethanol fermentation, and filter residue is the log quality.
2. the pretreated method of a kind of biomass according to claim 1 is characterized in that: in the step (2), freezing naturally is temperature condition, can drop to the geographic winter climate condition below-20 ℃.
3. the pretreated method of a kind of biomass according to claim 1 and 2 is characterized in that: in the step (3), thaw for thaw naturally or manual work thaw.
4. the pretreated method of a kind of biomass according to claim 3, it is characterized in that: biomass comprise stalk, timber or weeds.
5. the pretreated method of a kind of biomass according to claim 4 is characterized in that: pretreated biomass are used for the production of all biomass Mierocrystalline celluloses, semicellulose and lignin product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103341201A CN102433359A (en) | 2011-10-28 | 2011-10-28 | Method for pretreating biomass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103341201A CN102433359A (en) | 2011-10-28 | 2011-10-28 | Method for pretreating biomass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102433359A true CN102433359A (en) | 2012-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011103341201A Pending CN102433359A (en) | 2011-10-28 | 2011-10-28 | Method for pretreating biomass |
Country Status (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104805151A (en) * | 2014-01-24 | 2015-07-29 | 华东理工大学 | Lignocellulosic feedstock pretreatment method without prepreg |
| CN108026495A (en) * | 2015-10-08 | 2018-05-11 | 苏尔寿管理有限公司 | For handling the method and arrangement of biomass |
| CN110079570A (en) * | 2019-05-17 | 2019-08-02 | 哈尔滨工业大学 | A kind of method of the pretreatment of alkalinuria solution and its enzymatic hydrolysis conversion outside the cold district winter room of lignocellulose biomass |
| CN113735996A (en) * | 2021-09-30 | 2021-12-03 | 桂林古膳食品科技有限公司 | Method for efficiently separating water-insoluble xylan from wood fiber material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101875949A (en) * | 2010-07-05 | 2010-11-03 | 中兴能源(内蒙古)有限公司 | Method for producing ethanol fuel by using sweet sorghum stalks |
| WO2011087965A1 (en) * | 2010-01-15 | 2011-07-21 | Xyleco, Inc. | Cooling and processing materials |
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2011
- 2011-10-28 CN CN2011103341201A patent/CN102433359A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011087965A1 (en) * | 2010-01-15 | 2011-07-21 | Xyleco, Inc. | Cooling and processing materials |
| CN101875949A (en) * | 2010-07-05 | 2010-11-03 | 中兴能源(内蒙古)有限公司 | Method for producing ethanol fuel by using sweet sorghum stalks |
Non-Patent Citations (3)
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| 刘海臣等: "耐高温酵母利用稻草粉同步糖化发酵的初步研究", 《酿酒科技》 * |
| 梁磊等: "甘蔗块固定化酵母的制备及其在蔗汁燃料乙醇生产中的应用", 《食品与发酵工业》 * |
| 黄玉龙等: "小麦秸秆木质纤维素预处理技术研究", 《酿酒科技》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104805151A (en) * | 2014-01-24 | 2015-07-29 | 华东理工大学 | Lignocellulosic feedstock pretreatment method without prepreg |
| CN108026495A (en) * | 2015-10-08 | 2018-05-11 | 苏尔寿管理有限公司 | For handling the method and arrangement of biomass |
| US10968471B2 (en) | 2015-10-08 | 2021-04-06 | Sulzer Management Ag | Method of and arrangement for treating biomass |
| CN110079570A (en) * | 2019-05-17 | 2019-08-02 | 哈尔滨工业大学 | A kind of method of the pretreatment of alkalinuria solution and its enzymatic hydrolysis conversion outside the cold district winter room of lignocellulose biomass |
| CN110079570B (en) * | 2019-05-17 | 2022-11-01 | 哈尔滨工业大学 | Method for pretreatment of outdoor alkaline urine solution of lignocellulose biomass in cold area in winter and enzymolysis conversion of lignocellulose biomass |
| CN113735996A (en) * | 2021-09-30 | 2021-12-03 | 桂林古膳食品科技有限公司 | Method for efficiently separating water-insoluble xylan from wood fiber material |
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Application publication date: 20120502 |