CN109535442A - With the method for organic solvent separating lignin, cellulose and hemicellulose from stalk - Google Patents
With the method for organic solvent separating lignin, cellulose and hemicellulose from stalk Download PDFInfo
- Publication number
- CN109535442A CN109535442A CN201811428884.5A CN201811428884A CN109535442A CN 109535442 A CN109535442 A CN 109535442A CN 201811428884 A CN201811428884 A CN 201811428884A CN 109535442 A CN109535442 A CN 109535442A
- Authority
- CN
- China
- Prior art keywords
- hemicellulose
- cellulose
- stalk
- liquid
- lignin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C08H6/00—Macromolecular compounds derived from lignin, e.g. tannins, humic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0003—General processes for their isolation or fractionation, e.g. purification or extraction from biomass
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/20—Pulping cellulose-containing materials with organic solvents or in solvent environment
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Biochemistry (AREA)
- Engineering & Computer Science (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Sustainable Development (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
The invention discloses the methods with organic solvent separating lignin, cellulose and hemicellulose from stalk, specific step is as follows: (1) dry stalk powder and acid ethanol solution are added in autoclave, it is reacted after letting nitrogen in and deoxidizing, obtains mixed liquor A after reaction；(2) mixed liquor A that step (1) obtains is cooled to room temperature, is then separated by solid-liquid separation, obtain liquid phase and solid phase, solid phase is cellulose；(3) aqueous solution that pH value is 2 ~ 7 is added in the liquid phase obtained to step (2) to obtain mixed liquid B after reaction, be then separated by solid-liquid separation, obtains solid phase and liquid phase, solid phase is lignin, and liquid phase is the liquid containing hemicellulose.The separation method has simple process, and separation is quick, efficient, the advantages such as separation costs are low.
Description
Technical field
The present invention relates to chemical industry field of new energy technologies, and in particular to uses organic solvent separating lignin, fibre from stalk
The method of dimension element and hemicellulose.
Background technique
Stalk is the general name of mature crops stem and leaf part, is often referred toWheat、Rice, corn, potato,Rape、Cotton, it is sweet
The remainder of sugarcane and other crops after harvesting seed.Crop straw burning generates the weight that a large amount of dense smoke is rural environmental pollution
Big source.In recent years, country, which further enhances the comprehensive utilization of stalk and prohibits, burns work.
In stalk contain a large amount of cellulose, hemicellulose and lignin, wherein cellulose be stalk main component it
One, followed by hemicellulose and lignin, with floristics difference, the content of three components is not also identical.Cellulose in stalk,
Hemicellulose can be used for fermenting and producing fuel alcohol；Vapour, diesel oil are become by processing such as hydrogenation deoxidations after lignin decomposition,
It can be used as the raw material of some rare medicine.It acts on being formed by the non-bonding of the complexity such as chemical bond and hydrogen bond between three components
Complicated supramolecular structure, it is difficult to which separation utilizes.Since the crop growth period is short, yield is big, the agriculture as agricultural by product
Crop material is a kind of truly inexhaustible renewable natural resources.
Currently, the whole world is all furtherd investigate in the comprehensive utilization to stalk, however separate lignin, fibre in stalk
There are mainly two types of the methods of dimension element and hemicellulose: one is bioanalysis, another traditional soda and sulphite process.Wherein give birth to
Object method has the disadvantage in that 1, production cycle is long, occupied space is big, is unfavorable for large-scale industrial production；2, decomposition efficiency is low, no
Stalk can be decomposed completely；3, biological enzyme makes and uses that cost is too high, and the biological enzyme that the country uses relies primarily on to foreign countries
Import.Although traditional soda and sulphite process can efficiently separate out cellulose and hemicellulose, lignin is modified into
Ligninsulfonate is not able to cooperate the production of subsequent production petrol and diesel oil, does not reach real full utilization.
" technique that organic solvent extracts lignin in wheat straw ",Tian Yihong,Li minister,Gong great Chun, which is using water
The dry residue of the steam exploded wheat straw mentioned makees raw material, and the ethanol solution of certain volume score is added according to solid-to-liquid ratio 1:50(g:mL)
(containing 1g/LNaOH) is reacted in autoclave, and condensed water cooling, centrifugation are led in reaction after being fully completed.Filter residue is washed to
Drying is after neutrality to get cellulose.Filtrate recycles ethyl alcohol in 40 DEG C of rotary evaporation in vacuo to muddiness to recycle.Then it uses
HCl tune pH to 2.5 ~ 3.0, makes filtrate flocculate under stiring, and lignin is obtained after drying.The raw material of this technique is handled by steam explosion
, and using sodium hydroxide as catalyst, it is subsequent that there are also one of acidizing process, complex process.
Chinese patent 201010141040.X discloses a kind of removing lignin component from straw technique, and the raw material of the technique is
Through the pretreated agricultural crop straw of steam explosion, it is placed in the in the mixed solvent being made of water, polar non-solute, then in organic base
Catalytic action under, obtain lignin liquor and cellulose.The technique is more, at high cost using polar aprotic solvent component；Wood
Quality is dissolved in polar aprotic solvent, and the boiling point of solution component is quite high, evaporation recycling design need amount of heat from
And increase cost, it otherwise will cause environmental pollution, lignin waste.
Summary of the invention
In view of the above shortcomings of the prior art, the purpose of the present invention is just providing one kind with simple process, separation
Quickly, the lignin being sufficiently separated from stalk with organic solvent, cellulose and the hemicellulose for the advantages such as efficiently, separation costs are low
The method of element.
The technical scheme of the present invention is realized as follows:
With the method for organic solvent separating lignin, cellulose and hemicellulose from stalk, the specific steps are as follows:
(1) dry stalk powder and acid ethanol solution are added in autoclave, are reacted after letting nitrogen in and deoxidizing, after reaction
Obtain mixed liquor A；
(2) mixed liquor A that step (1) obtains is cooled to room temperature, is then separated by solid-liquid separation, obtain liquid phase and solid phase, solid phase is
Cellulose；
(3) in the liquid phase obtained to step (2) be added pH value be 2 ~ 7 aqueous solution obtain mixed liquid B after reaction, then into
Row is separated by solid-liquid separation, and obtains solid phase and liquid phase, and solid phase is lignin, and liquid phase is the liquid containing hemicellulose；Or it will be obtained in step (2)
Organic solvent ethyl alcohol is removed by vacuum distillation to liquid phase and obtains mixture C, is then separated by solid-liquid separation, obtains solid phase and liquid phase,
Solid phase is lignin, and liquid phase is the liquid containing hemicellulose.
Further, the dry stalk powder is will to dry after straw chopping to constant weight to obtain.
Further, acid ethanol solution be mass fraction be 20 ~ 80% ethanol solution and sulfuric acid by 100mL:0.01 ~
The solution that the ratio of 0.2mol is formulated.
Further, the ratio of dry stalk powder quality and the volume of acid ethanol solution is 1g:4 ~ 10mL.
Further, the reaction temperature in step (1) is 100 ~ 200 DEG C, and the reaction time is 20 ~ 120min.
Further, the volume ratio of the pH aqueous solution for being 2 ~ 7 and liquid phase that are added in step (3) is 1 ~ 10:1.
Further, the temperature being evaporated under reduced pressure in step (3) is 40 ~ 55 DEG C.
Cellulose in stalk be by glucose group at macromolecular polysaccharide, not soluble in water and common organic solvents, also not
It is dissolved in ethyl alcohol, and hemicellulose and lignin are dissolved in the aqueous solution of ethyl alcohol, so being convenient for after stalk is dissolved in acid ethanol solution
Isolate cellulose.Again because lignin does not dissolve in acidic aqueous solution, it is dissolved in ethyl alcohol, hemicellulose is dissolved in water insoluble in ethyl alcohol, institute
After the aqueous solution that pH value is 2-7 is added, ethyl alcohol and pH value are that water molecules are in the aqueous solution of 2-7 to be precipitated lignin, half
Cellulose is still retained in the liquid phase.Another kind recycles ethyl alcohol by the method for vacuum distillation and lignin is precipitated, molten because removing ethyl alcohol
After liquid, there are also a small amount of acid in mixed solution, and lignin is precipitated insoluble in acid solution, and hemicellulose is still deposited in
In liquid phase.The present invention is exactly the dissolubility principle by making full use of cellulose, hemicellulose and lignin, adequately by stalk
In cellulose, hemicellulose and lignin separation come out.
Compared with prior art, the invention has the following beneficial effects:
1, the present invention can adequately separate lignin, cellulose and the hemicellulose in stalk one by one, and technique
Simply, separating rate is fast, and separative efficiency is high, it is not necessary to which isolated cost is lower using the biological enzyme of import.
2, the present invention is used as catalyst using acid, uses alkali as a catalyst more in the prior art, subsequent also to need answering for acidification
General labourer's skill is compared, and present invention process is simple.
3, the aqueous solution that pH value is 2-7 is added in the ethanol solution containing lignin and lignin is separated, just
Directly lignin can be allowed to be precipitated, drying is very easy to after separation；There is energy conservation, easy, quick compared to traditional heating evaporation,
And the lignin that the method for heating evaporation solvent obtains is sticky, and it is dry difficult.
4, organic solvent ethyl alcohol of the invention can recycle, and save cost, and reduce the pollution to environment.
Specific embodiment
Invention is further described in detail With reference to embodiment.
Stalk pre-treatment: cutting segment for stalk, smash after placing drying, and then with drier, drying to constant weight, is placed in dry
It is spare in dry device.
Embodiment 1
It takes 15 grams of above-mentioned dry stalk to be placed in high-pressure reactor, adds the acid ethanol solution that mass fraction is 50% ethyl alcohol
Contain 0.05mol sulfuric acid in 140mL() in high-pressure reactor, reactor is sealed, nitrogen is passed through and displaces air, is quickly heated
To 200 DEG C, 40min is then reacted.It is cooled to room temperature after reaction, then vacuum filtration is separated by solid-liquid separation, and obtains solid phase
With 137mL liquid phase, solid phase is put into drying in thermostatic drying chamber, weighing is to get to 4.28 grams of cellulose solids；Again to above-mentioned liquid
The aqueous solution that 270mLpH value is 6 is added in phase, after reacting a period of time, then with centrifuge is separated by solid-liquid separation (revolving speed 4000/
Min, 15 minutes time), solid phase is then placed in drying in thermostatic drying chamber, is weighed to get arriving 2.03 grams of lignin, hemicellulose
Element is present in liquid phase, liquid phase volume 407mL, and the concentration that hemicellulose is determined by analysis is 0.01g/mL.
Embodiment 2
It takes 15 grams of above-mentioned dry stalk to be placed in high-pressure reactor, adds the acid ethanol solution that mass fraction is 60% ethyl alcohol
(interior to contain 0.075mol sulfuric acid) 140mL seals reactor, is passed through nitrogen and displaces air in high-pressure reactor, quickly adds
Then heat reacts 50min to 150 DEG C.It is cooled to room temperature after reaction, then vacuum filtration is separated by solid-liquid separation, consolidate
Mutually with 138mL liquid phase, solid phase is put into drying in thermostatic drying chamber, weighing is to get to 5.52 grams of cellulose solids；Xiang Shangshu again
The aqueous solution that 300mLpH value is 7 is added in liquid phase, after reacting a period of time, then with centrifuge is separated by solid-liquid separation (revolving speed
4000/min, 15 minutes time), solid phase is then placed in drying in thermostatic drying chamber, is weighed to get arriving 2.24 grams of lignin,
Hemicellulose is present in liquid phase, liquid phase volume 438mL, and the concentration that hemicellulose is determined by analysis is 0.01g/mL.
Embodiment 3
It takes 15 grams of above-mentioned dry stalk to be placed in high-pressure reactor, adds the acid ethanol solution that mass fraction is 65% ethyl alcohol
Contain 0.15mol sulfuric acid in 150mL() in high-pressure reactor, seal reactor, be passed through after nitrogen displaces air, quickly plus
Then heat reacts 100min to 140 DEG C.It is cooled to room temperature after reaction, then vacuum filtration is separated by solid-liquid separation, consolidate
Mutually with 147mL liquid phase, solid phase is put into drying in thermostatic drying chamber, weighing is to get to 5.23 grams of cellulose solids；Xiang Shangshu again
The aqueous solution that 300mLpH value is 7 is added in liquid phase, after reacting a period of time, then with centrifuge is separated by solid-liquid separation (revolving speed
4000/min, 15 minutes time), solid phase is then placed in drying in thermostatic drying chamber, is weighed to get arriving 2.03 grams of lignin,
Hemicellulose is present in liquid phase, liquid phase volume 447mL, and the concentration that hemicellulose is determined by analysis is 0.01g/mL.
Embodiment 4
It takes 15 grams of above-mentioned dry stalk to be placed in high-pressure reactor, adds the acid ethanol solution that mass fraction is 80% ethyl alcohol
Contain 0.16mol sulfuric acid in 120mL() in high-pressure reactor, seal reactor, be passed through after nitrogen displaces air, quickly plus
Then heat reacts 120min to 100 DEG C.It is cooled to room temperature after reaction, then vacuum filtration is separated by solid-liquid separation, consolidate
Mutually with 118mL liquid phase, solid phase is put into drying in thermostatic drying chamber, weighing is to get to 5.74 grams of cellulose solids；Xiang Shangshu again
The aqueous solution that 200mLpH value is 2 is added in liquid phase, after reacting a period of time, then with centrifuge is separated by solid-liquid separation (revolving speed
4000/min, 15 minutes time), solid phase is then placed in drying in thermostatic drying chamber, is weighed to get arriving 1.91 grams of lignin,
Hemicellulose is present in liquid phase, liquid phase volume 318mL, and the concentration that hemicellulose is determined by analysis is 0.01g/mL.
Embodiment 5
It takes 15 grams of above-mentioned dry stalk to be placed in high-pressure reactor, and the acid ethanol solution that mass fraction is 50% ethyl alcohol is added
Contain 0.05mol sulfuric acid in 140mL() in high-pressure reactor, reactor is sealed, is passed through after nitrogen displaces air and quickly adds
Heat is to 140 DEG C, then anti-30min.It is cooled to room temperature after reaction, then vacuum filtration is separated by solid-liquid separation, and obtains solid phase
With 137mL liquid phase, solid phase is put into drying in thermostatic drying chamber, is weighed to get 5.57 grams of celluloses；Liquid phase is placed in rotation to steam
It sends out device, is heated to 40 ~ 55 DEG C, evaporative removal ethyl alcohol (ethyl alcohol is recyclable to be recycled).Then again by the mixing in rotary evaporator
Liquid is separated by solid-liquid separation, and solid phase is placed in drying in thermostatic drying chamber, to get arriving 2.24 grams of lignin, hemicellulose is deposited for weighing
It is in liquid phase, liquid phase volume 65mL, the concentration that hemicellulose is determined by analysis is 0.05g/mL.
Embodiment 6
It takes 15 grams of above-mentioned dry stalk to be placed in high-pressure reactor, and the acid ethanol solution that mass fraction is 60% ethyl alcohol is added
Contain 0.04mol sulfuric acid in 140mL() in high-pressure reactor, reactor is sealed, is passed through after nitrogen displaces air and quickly adds
Then heat reacts 30min to 150 DEG C.It is cooled to room temperature after reaction, then vacuum filtration is separated by solid-liquid separation, consolidate
Mutually and 137mL liquid phase, solid phase is put into thermostatic drying chamber dry, weighing is to get to 5.11 grams of celluloses；Liquid phase is placed in rotation
Turn evaporator, be heated to 40 ~ 55 DEG C, evaporative removal ethyl alcohol (ethyl alcohol is recyclable to be recycled).It then again will be in rotary evaporator
Mixed liquor is separated by solid-liquid separation, and solid phase is placed in drying in thermostatic drying chamber, is weighed to get arriving 2.07 grams of lignin, hemicellulose
Element is present in liquid phase, liquid phase volume 54mL, and the concentration that hemicellulose is determined by analysis is 0.06g/mL.
Embodiment 7
It takes 15 grams of above-mentioned dry stalk to be placed in high-pressure reactor, and the acid ethanol solution that mass fraction is 50% ethyl alcohol is added
Contain 0.015mol sulfuric acid in 140mL() in high-pressure reactor, reactor is sealed, is passed through after nitrogen displaces air and quickly adds
Then heat reacts 20min to 200 DEG C.It is cooled to room temperature after reaction, then vacuum filtration is separated by solid-liquid separation, consolidate
Mutually and 136mL liquid phase, solid phase is put into thermostatic drying chamber dry, weighing is to get to 5.08 grams of celluloses；Liquid phase is placed in rotation
Turn evaporator, be heated to 40 ~ 55 DEG C, evaporative removal ethyl alcohol (ethyl alcohol is recyclable to be recycled).It then again will be in rotary evaporator
Mixed liquor is separated by solid-liquid separation, and solid phase is placed in drying in thermostatic drying chamber, is weighed to get arriving 2.1 grams of lignin, hemicellulose
It is present in liquid phase, liquid phase volume 66mL, the concentration that hemicellulose is determined by analysis is 0.05g/mL.
Embodiment given by the present invention is the dry stalk powder to constant weight, is in order to which other are changed during experiment with computing
Learn the additive amount of raw material.During industrial application, it is former can then to calculate other chemistry by calculating water content in stalk
The additive amount of material so as to reduce the processing such as dry, and then reduces separation costs.Crop straw burning is not only solved using the present invention
Bring serious atmospheric pollution, but also can turn waste into wealth is sufficiently separated cellulose in stalk, hemicellulose and wooden
Element, the cellulose separated, hemicellulose can be used for fermenting and producing fuel alcohol；By hydrogenation deoxidation etc. after lignin decomposition
Processing becomes vapour, diesel oil, can also be used as the raw material of some rare medicine, and it is this reproducible natural to take full advantage of stalk
Resource.
Finally, it should be noted that the above embodiment of the present invention is only example to illustrate the invention, and it is not
It is the restriction to embodiment of the present invention.For those of ordinary skill in the art, on the basis of the above description also
Other various forms of variations and variation can be made.Here all embodiments can not be exhaustive.It is all to belong to this
The technical solution changes and variations that derived from of invention are still in the scope of protection of the present invention.
Claims (7)
1. with the method for organic solvent separating lignin, cellulose and hemicellulose from stalk, which is characterized in that specific steps
It is as follows:
(1) dry stalk powder and acid ethanol solution are added in autoclave, are reacted after letting nitrogen in and deoxidizing, after reaction
Obtain mixed liquor A；
(2) mixed liquor A that step (1) obtains is cooled to room temperature, is then separated by solid-liquid separation, obtain liquid phase and solid phase, solid phase is
Cellulose；
(3) in the liquid phase obtained to step (2) be added pH value be 2 ~ 7 aqueous solution obtain mixed liquid B after reaction, then into
Row is separated by solid-liquid separation, and obtains solid phase and liquid phase, and solid phase is lignin, and liquid phase is the liquid containing hemicellulose；Or it will be obtained in step (2)
Organic solvent ethyl alcohol is removed by vacuum distillation to liquid phase and obtains mixture C, is then separated by solid-liquid separation, obtains solid phase and liquid phase,
Solid phase is lignin, and liquid phase is the liquid containing hemicellulose.
2. it is according to claim 1 with organic solvent from stalk separating lignin, cellulose and hemicellulose method,
The dry stalk powder is will to dry after straw chopping to constant weight to obtain.
3. it is according to claim 1 with organic solvent from stalk separating lignin, cellulose and hemicellulose method,
It is characterized in that, acid ethanol solution is the ethanol solution that mass fraction is 20 ~ 80% and sulfuric acid by 100mL:0.01 ~ 0.2mol
The solution that is formulated of ratio.
4. it is according to claim 1 with organic solvent from stalk separating lignin, cellulose and hemicellulose method,
The ratio of dry stalk powder quality and the volume of acid ethanol solution is 1g:4 ~ 10mL.
5. it is according to claim 1 with organic solvent from stalk separating lignin, cellulose and hemicellulose method,
It is characterized in that, the reaction temperature in step (1) is 100 ~ 200 DEG C, the reaction time is 20 ~ 120min.
6. it is according to claim 1 with organic solvent from stalk separating lignin, cellulose and hemicellulose method,
It is characterized in that, the volume ratio of the pH aqueous solution for being 2 ~ 7 and liquid phase that are added in step (3) is 1 ~ 10:1.
7. it is according to claim 1 with organic solvent from stalk separating lignin, cellulose and hemicellulose method,
It is characterized in that, the temperature being evaporated under reduced pressure in step (3) is 40 ~ 55 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811428884.5A CN109535442A (en) | 2018-11-27 | 2018-11-27 | With the method for organic solvent separating lignin, cellulose and hemicellulose from stalk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811428884.5A CN109535442A (en) | 2018-11-27 | 2018-11-27 | With the method for organic solvent separating lignin, cellulose and hemicellulose from stalk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109535442A true CN109535442A (en) | 2019-03-29 |
Family
ID=65851315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811428884.5A Pending CN109535442A (en) | 2018-11-27 | 2018-11-27 | With the method for organic solvent separating lignin, cellulose and hemicellulose from stalk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109535442A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113999124A (en) * | 2021-09-30 | 2022-02-01 | 南京林业大学 | Method for preparing dopamine and derivatives thereof by using agricultural and forestry wastes and special equipment thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4496426A (en) * | 1982-04-06 | 1985-01-29 | Md-Verwaltungesellschaft Nicolaus Gmbh & Co. Kg | Process for the continuous extraction of vegetable-fiber material in two stages |
| CN1417406A (en) * | 2001-11-09 | 2003-05-14 | 罗学刚 | Organic solvent recovering and lignin separating paper pulp making technology |
| CN101029459A (en) * | 2006-02-27 | 2007-09-05 | 江苏绿陵生态肥有限公司 | Technology for producing ligin by crop straw refuse |
| US20070254348A1 (en) * | 2006-04-28 | 2007-11-01 | Theodora Retsina | Method for the production of fermentable sugars and cellulose from lignocellulosic material |
| CN101522760A (en) * | 2006-08-07 | 2009-09-02 | 艾米塞莱克斯能源公司 | Process for recovery of holocellulose and near-native lignin from biomass |
| CN102174754A (en) * | 2011-01-07 | 2011-09-07 | 华南理工大学 | Solvent for separating biomass, and application thereof in selective separation of biomass |
| CN103031763A (en) * | 2012-12-25 | 2013-04-10 | 济南圣泉集团股份有限公司 | Comprehensive utilization technology of biomass raw materials |
| US8864941B2 (en) * | 2007-09-21 | 2014-10-21 | Api Intellectual Property Holdings, Llc | Separation of lignin from hydrolyzate |
| US20140356915A1 (en) * | 2013-05-28 | 2014-12-04 | Api Intellectual Property Holdings, Llc | Integrated biorefineries for production of sugars, fermentation products, and coproducts |
| US20150072389A1 (en) * | 2006-04-28 | 2015-03-12 | Api Intellectual Property Holdings, Llc | Process for the stepwise treatment of lignocellulosic material to produce reactive chemical feedstocks |
-
2018
- 2018-11-27 CN CN201811428884.5A patent/CN109535442A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4496426A (en) * | 1982-04-06 | 1985-01-29 | Md-Verwaltungesellschaft Nicolaus Gmbh & Co. Kg | Process for the continuous extraction of vegetable-fiber material in two stages |
| CN1417406A (en) * | 2001-11-09 | 2003-05-14 | 罗学刚 | Organic solvent recovering and lignin separating paper pulp making technology |
| CN101029459A (en) * | 2006-02-27 | 2007-09-05 | 江苏绿陵生态肥有限公司 | Technology for producing ligin by crop straw refuse |
| US20070254348A1 (en) * | 2006-04-28 | 2007-11-01 | Theodora Retsina | Method for the production of fermentable sugars and cellulose from lignocellulosic material |
| US20150072389A1 (en) * | 2006-04-28 | 2015-03-12 | Api Intellectual Property Holdings, Llc | Process for the stepwise treatment of lignocellulosic material to produce reactive chemical feedstocks |
| CN101522760A (en) * | 2006-08-07 | 2009-09-02 | 艾米塞莱克斯能源公司 | Process for recovery of holocellulose and near-native lignin from biomass |
| US8864941B2 (en) * | 2007-09-21 | 2014-10-21 | Api Intellectual Property Holdings, Llc | Separation of lignin from hydrolyzate |
| CN102174754A (en) * | 2011-01-07 | 2011-09-07 | 华南理工大学 | Solvent for separating biomass, and application thereof in selective separation of biomass |
| CN103031763A (en) * | 2012-12-25 | 2013-04-10 | 济南圣泉集团股份有限公司 | Comprehensive utilization technology of biomass raw materials |
| US20140356915A1 (en) * | 2013-05-28 | 2014-12-04 | Api Intellectual Property Holdings, Llc | Integrated biorefineries for production of sugars, fermentation products, and coproducts |
Non-Patent Citations (4)
| Title |
|---|
| 中野準三等著，鲍禾等译: "《木材化学》", 28 February 1989, 中国林业出版社 * |
| 佘雕等: ""农业秸秆生物质转化利用的研究进展"", 《西北林学院学报》 * |
| 李忠正主编: "《植物纤维资源化学》", 30 June 2012, 中国轻工业出版社 * |
| 王为国等: ""稻草秸秆超低酸水解及水解产物分析"", 《石油化工》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113999124A (en) * | 2021-09-30 | 2022-02-01 | 南京林业大学 | Method for preparing dopamine and derivatives thereof by using agricultural and forestry wastes and special equipment thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101855368B (en) | Process for preparing a sugar product | |
| JP5520822B2 (en) | Biomass component separation process | |
| CA2749100C (en) | Process for the production of alcohol | |
| WO2008106895A1 (en) | Process for refining and producing cellulose, lignin and xylose from biomass material | |
| CN100487126C (en) | Separation and extraction method for lignin hydrolyzed by enzyme | |
| CN101857523B (en) | Method for producing xylitol and arabitol simultaneously by utilizing xylose mother liquid | |
| CN102776244A (en) | Process for producing polyatomic sugar alcohol and lignin by comprehensively using agricultural and forestry wasters of corncobs | |
| NO145201B (en) | PROCEDURE FOR RECOVERY OF SUGAR, EVEN CELLULOSE AND EVEN LIGNIN FROM LIGNOCELLULOUS PLANTS | |
| CN113088542B (en) | Biomass pretreatment process and solvent recovery method used in treatment process thereof | |
| CN103045680B (en) | Comprehensive utilization method of lignocellulose biomass | |
| CN104292195B (en) | Furfural is prepared and method that modulation flow prepares levulic acid after a kind of biomass graded process | |
| CN111472186B (en) | Method for preparing high-quality crop straw dissolving pulp through hydrothermal pretreatment | |
| CN103045678B (en) | Comprehensive utilization method of lignocellulose biomass | |
| CN1982322A (en) | Method for organically separating and extracting enzymic lignin | |
| CN109535442A (en) | With the method for organic solvent separating lignin, cellulose and hemicellulose from stalk | |
| CN113603899B (en) | Method for pretreating lignocellulose by using Lewis base to assist neutral eutectic solvent | |
| CN108117652A (en) | A kind of extracting method of enzymolysis xylogen | |
| CN102239263A (en) | Use of recycled cotton for producing ethanol, and production method | |
| CN103045677B (en) | Comprehensive utilization method of lignocellulose biomass | |
| WO2024051158A1 (en) | Preparation method for distillers grain-based lyocell fiber pulp | |
| CN115852723B (en) | Method for extracting high-purity xylose liquid and cellulose by using corn straw | |
| CN104292194B (en) | Furfural is prepared and method that quick changeable temperature method prepares levulic acid after a kind of biomass graded process | |
| JP2013112661A (en) | Method for continuously producing furfural from biomass | |
| CN103045688B (en) | Comprehensive utilization method of lignocellulose biomass | |
| CN104480163B (en) | A kind of preparation method for digesting liquid glucose |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190329 |
|
| RJ01 | Rejection of invention patent application after publication |