CN106244734A - A kind of method for saccharifying of hemicellulose - Google Patents
A kind of method for saccharifying of hemicellulose Download PDFInfo
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- CN106244734A CN106244734A CN201610605663.5A CN201610605663A CN106244734A CN 106244734 A CN106244734 A CN 106244734A CN 201610605663 A CN201610605663 A CN 201610605663A CN 106244734 A CN106244734 A CN 106244734A
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- acid
- hemicellulose
- saccharifying
- liquid
- sulphite
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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
-
- 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
Abstract
The invention discloses the method for saccharifying of a kind of hemicellulose.The inventive method is to add strong acid and sulfurous acid or sulphite in hemicellulose or the liquid containing hemicellulose analyte；Mixing liquid pH value when 20 DEG C after adding strong acid and sulfurous acid or sulphite is less than 2.0, wherein relative to 100 parts of quality strong acid, adds 10 80 parts of sulfurous acids or sulphite.Decomposing the furfural etc. produced and hinder the material of fermentation little because crossing when carbohydrate fermentation producing ethanol with the method for saccharifying of the present invention, microorganism converts saccharide and becomes the yield of ethanol also to improve.
Description
Technical field
The present invention relates to the method for saccharifying of hemicellulose, particularly relate to a kind of biomass such as xylophyta and herbaceous plant
The method that middle hemicellulose saccharification yield is good.
Background technology
From about 20 end of the centurys start the natural energy source such as oil, coal exhaustion begin to be appealed thus for the mankind
The exploitation of alternative energy source seems all the more important.Although the most various researchs are carried out always, but it is available in reality formally making
Technology not yet find out.It is devoted to the exploitation of alternative energy source has become the class of the task of top priority to seek further to break through
Topic.One of energy as an alternative, the utilization of cellulose family natural biomass comes into question always, as with polysaccharide sugar in natural biomass
Changing the sugar that obtains is that raw material passes through fermentation method and can produce ethanol.Although the whole nation all mixes the technical side utilized at ethanol with gasoline etc.
Face carries out polygon exploitation, but Cost Problems is still a kind of true.Therefore, in natural biomass, cellulose and hemicellulose etc. are many
The saccharifying Cost Problems of sugar, and the pentose in hemicellulose is converted into the feasible fermentation technique of the measured ethanol of product still
To be solved, it is inadequate that the most zymogenic exploitation is the most also done.
Wherein the saccharifying technology of polysaccharide is not only for producing the energy, and for changing from oil, coal etc. the most always
For stone resource is made the production technology of chemicals (acetic acid, propylene, butanol etc.) raw material important outside, single as producing
The technology of sugar is also very important.Such as, xylose etc. can become the raw material producing anticorrosive sweeting agent xylitol.Polysaccharide
Saccharifying technology is also important for producing the various monosaccharide with various physiologically active, as the core building so-called sugar platform
Its importance of technology grows with each passing day.Single method for saccharifying of natural biomass can be generally divided into fermentation method and acid-hydrolysis method (acid sugar
Change method).Primarily now come into question is fermentation method, and wherein, the pre-treatment of raw material plays important role.As pre-treatment side
What method mainly came into question is method and the High Temperature High Pressure hot water treatment method of physics.But, the cost of fermentation method fermentation is high,
Hemicellulase especially for hemicellulose monosaccharide is the most noticeable, and its exploitation does not has the most too much progress yet.Therefore,
Higher Cost Problems can be brought by fermentation method monosaccharide metaplasia material.
On the one hand, from the initial stage in 1900, the acid-hydrolysis method (acid mashing system) of biomass was as main wood saccharification technology
The most coming into question, use sulphuric acid, the method for hydrochloric acid have been widely used in practice the most.The saccharifying technology of sulphuric acid is sent out in the past most
Reach is the method utilizing dilute sulfuric acid, and Germany Xiao Lefa is famous, and the method is in the presence of dilute sulfuric acid, High Temperature High Pressure saccharifying
Biomass, through the glucose of acquisition is recovered by filtration, but the yield of glucose is relatively low, and the easy decomposition furfural excessively of hemicellulose source monosaccharide
Change.Accordingly, as Xiao Le for obtaining the method for biomass monosaccharide and obtaining the method for the high monosaccharide of yield from hemicellulose
Method is all not enough.Afterwards, although the modification method Madison method as Xiao Lefa is proposed, can be to obtaining hemicellulose source
Being essentially identical to Xiao Lefa for monosaccharide, hemicellulose class material is the most substantially effectively used.In recent years in reality
In useful dilute sulfuric acid process saccharifying timber carry out the example of alcohol production, as Japanese Kansai Broadband Trial Network Co., Ltd. dilute sulfuric acid processes waste wood
Sheet, mainly utilizes the fermentation of its hemicellulose source monosaccharide to produce bio-ethanol, and they have recognized suppression in process of production
The importance of hydrolysis of hemicellulose.Use the factory North Sea that the saccharifying technology of concentrated sulphuric acid is only in Japan built in practice
Dow process, the method is before concentrated sulphuric acid hydrolysis wood-cellulose, carries out steam prehydrolysis to produce furfural, but not yet realizes
Production from hemicellulose to monosaccharide.As the representative using concentrated sulphuric acid to produce ethanol, Hui Mitsubishi of Japan and the U.S.
The monosaccharideization that Arkenol society is just carrying out building waste wood and paper the like waste with concentrated sulphuric acid in the U.S. processes.With concentrated sulphuric acid by raw material
After dissolving, it is diluted to dilute sulfuric acid hydrolysis monosaccharide metaplasia material, but crosses the problem decomposed and still exist, i.e. manufacture sugar from hemicellulose
Class is especially difficult, and decomposing further of suppression monosaccharide is requisite.The method of hydrochloric acid has rainow method, new rainow
Method, use the Elan method of hydrogen chloride gas, Noguchi method etc., no matter which method, be all made by dilute before hydrocellulose primary response
Hydrochloric acid prehydrolysis removes hemicellulose.But, hemicellulose source sugar particularly pentose is easy furfural, these sides in hydrochloric acid
Method is only suitable for the production of furfural, but is inappropriate from utilizing sugared platform technical standpoint to greatest extent.Additionally, more closely
Nian Yinqi corrosive hydrochloric acid is the most almost not used.Obtain the technology of monosaccharide from biomass, as can effectively remove recovery half
Though the technology of cellulose is attracted attention in recent years, but it always is the hot-water pretreatment technology of High Temperature High Pressure, hot-water pretreatment technology
Just it was widely used the manufacture of slurry from the past, and processed wood chip with the high-temperature water of 170-200 DEG C and remove after hemicellulose again
Carry out sulphate cook with sodium sulfide-caustic soda and manufacture the dissolving pulp of high-cellulose purity.But, with hot water treatment obtain pre-
Hemicellulose in hydrolyzed solution is not by fully saccharifying.Soft biology is processed with the high-pressure water heating of more than 200 DEG C according to various reports
Available hemicellulose analyte extracting solution after matter and timber, but still remnant oligosaccharide in the decomposed solution obtained, want
It is necessary that fully saccharifying further processes.Further, acid treatment, in addition to obtaining glucose, manufactures also for obtaining
The raw material monosaccharide of ethanol, adds chemical treatments dilute sulfuric acid and SO2The method of prehydrolysis biomass is the most prevailing.
As the saccharifying technology of hemicellulose, mainly come into question is fermentation method and acid-hydrolysis method (acid mashing system).
Fermentation method cost is high, and acid-hydrolysis method reaction is difficult to suppress, and easily generates furfural because crossing hydrolysis.
Summary of the invention
In view of the above fact, the present invention provides the method for saccharifying of a kind of hemicellulose, not only controls decomposition, Er Qieyou
Imitate ground saccharifying hemicellulose.
The method for saccharifying of hemicellulose of the present invention, adds strong acid in hemicellulose or the liquid containing hemicellulose analyte
With sulfurous acid or sulphite；Mixing liquid pH value when 20 DEG C after adding strong acid and sulfurous acid or sulphite is less than 2.0,
Wherein relative to 100 parts of quality strong acid, add 10-80 part sulfurous acid or sulphite.
Described hemicellulose or be acid treatment gramineae plant containing the liquid of hemicellulose analyte and xylophyta obtains
The liquid that liquid, alkali process gramineae plant and the xylophyta that liquid, hot water treatment gramineae plant and xylophyta obtain obtains.
Described hemicellulose contains xylose, mannose, a galactose main chain at least within.
Described sulphite is a kind at least within of sodium sulfite, calcium sulfite, magnesium sulfite, ammonium sulfite.
Described strong acid refers to that acid ionization constant is the material of less than 3.Described strong acid is sulphuric acid, hydrochloric acid or nitric acid.
Relative to 100 parts of quality strong acid, add 30-60 part sulfurous acid or sulphite is best.
Add after strong acid and sulfurous acid or sulphite liquid when 20 DEG C pH value between 0.8-1.9.Add strong acid and
After sulfurous acid or sulphite, liquid pH value when 20 DEG C is best between 1.0-1.4.
Compared with prior art, the invention has the beneficial effects as follows:
1, utilizing the method for saccharifying of the present invention, the hemicellulose that in polysaccharide, particularly monosaccharideization is difficult in acid-hydrolysis method can be effective
Ground coverlet saccharifying.
2, the method for saccharifying of the present invention, can suppress crossing of hemicellulose saccharifying to decompose, with former technology by acid hydrolysis
Compare and can obtain, from hemicellulose, the various monosaccharide that recovery rate is high, greatly reduce production cost.
Decompose the furfural etc. produced and hinder fermentation because crossing when 3, carbohydrate fermentation being produced ethanol with the method for saccharifying of the present invention
Material little, microorganism converts saccharide and becomes the yield of ethanol also to improve.
Detailed description of the invention
Below in conjunction with specific embodiment, present disclosure is described in more detail.It addition, this specification is removed
Non-specifically is recorded, and otherwise concentration etc. are all on the basis of weight, and numerical range comprises end points.
Experiment 1. is applicable to softwood kraft pulp dregs of rice pre-hydrolyzed solution
Embodiment 1: the when of manufacturing sulphate pulp (DKP), hydrolysis process wood chip is by the hemicellulose dissolution in wood chip
Come, produce sulphate pulp based on kraft cooking.In the present embodiment, carry out half fibre with the hydrolyzed solution that hydrolysis generates for raw material
The saccharifying experiment of dimension element.
Process needlebush wood chip (home made mixture, oven dry weight 200g) with water at 170-200 DEG C and obtain needle in 1-5 hour
Wood pre-hydrolyzed solution.In this liquid, the content (sugar concentration) of hemicellulose is about 3.7%, and wherein the concentration of monosaccharide is containing about 1.0%.Should
Liquid is the suspension of easily precipitation, wherein sugar more than half be presented in oligosaccharide.Quantitatively single according to chromatography of ions
Sugar amount, the accumulative summation as monosaccharide amount of xylose, arabinose, glucose, galactose and mannose.
In pre-hydrolyzed solution, (this concentration is the concentration of sulphuric acid itself, unless stated otherwise, in literary composition to add 2% sulphuric acid
All percents are all percentage by weights, and addition is made by oneself according to the feature of hydrolyzed solution, fixing restriction), 1% sodium sulfite
(this is the weight percent concentration of sodium sulfite itself), liquid pH value=1.1, (this numerical value refers to prehydrolysis after interpolation
The pH value of mixed liquor), process 3 hours hydrolyzed hemicelluloses at 120 DEG C, with ion-chromatographic determination xylose, Arab after process
The total amount of sugar, glucose, galactose and mannose, as the summation of monosaccharide amount.
Embodiment 2: in addition to replacing sulphuric acid with hydrochloric acid, other saccharifying carrying out hemicellulose same as in Example 1.
Embodiment 3: except replacing in addition to sodium sulfite with 5% sulfurous acid, other is same as in Example 1 carries out hemicellulose
Saccharifying.In the present embodiment, after interpolation sulfurous sour water, the sulfurous acid concentration of reactant liquor is 1%.
Embodiment 4: except replacing in addition to sodium sulfite with calcium sulfite, other is same as in Example 1 carries out hemicellulose
Saccharifying.
Comparative example 1: except adding 3% sulphuric acid, outside sodium sulfite, other is same as in Example 1 carries out half fiber
The saccharifying of element.
The result of 1 tested by table 1.
Table 1 represents the monosaccharide amount contained in saccharified liquid.The monosaccharide amount of saccharified liquid represent xylose, arabinose, glucose, half
Lactose, the aggregate-value of mannose concentration.In acid-hydrolysis method hydrolyzing biomass in the case of hemicellulose fraction, add sulfurous acid or
Sulphite can suppress crossing of monosaccharide to decompose, it is achieved monosaccharide effectively.
Experiment 2. is applicable to sulphate method saccharifying
Embodiment 1: the air-dried wood chip ground product 0.5g of Cunninghamia lanceolata (Lamb.) Hook., 7g 72% sulphuric acid is added on cooling limit, limit.Wood powder is allowed to dissolve
After (containing about 20% hemicellulose), add sodium sulfite 2.5g.100ml accurately it is diluted to again with water, and in boiling bath
Hydrolyze 1 hour, the saccharified liquid that filtering reacting liquid obtains.
As comparative example 1, except adding 10g 72% sulphuric acid, outside sodium sulfite, other is same as described above obtains
Saccharified liquid.
The result of 2 tested by table 2.
| Acid | Monosaccharide amount (%) | |
| Embodiment 1 | Sulphuric acid/sodium sulfite | 0.32 |
| Comparative example 1 | Sulphuric acid | 0.26 |
Table 2 represents the monosaccharide amount contained in saccharified liquid.With in acid hydrolysis of biomass when of hemicellulose fraction, add Asia
Sulphuric acid or sulphite can suppress crossing of monosaccharide to decompose, it is achieved monosaccharide effectively.
Experiment 3. is applicable to hot water prehydrolysis decomposed solution
Embodiment 1: in pressure vessel, in the presence of 10 times of water yields, carrying that 200 DEG C of process rice straws obtain for 3 hours
Take liquid (containing about 20% hemicellulose).Wherein, the 2% sulphuric acid concentration of sulphuric acid itself (this concentration be), 1% sodium sulfite are added
The concentration of sodium sulfite itself (this concentration be), at the saccharified liquid that 120 DEG C of hydrolysis obtain for 2 hours.
As comparative example 1, except adding 3% sulphuric acid (adding isopyknic with 2% sulphuric acid and 1% sodium sulfite), without
Outside sodium sulfite, other saccharified liquid obtained same as described above.
The result of 3 tested by table 3.
| Acid | Monosaccharide amount (%) | |
| Embodiment 1 | 2% sulphuric acid/1% sodium sulfite | 4.62 |
| Comparative example 1 | 3% sulphuric acid | 2.78 |
Table 3 represents the monosaccharide amount contained in saccharified liquid.With in acid hydrolysis of biomass when of hemicellulose fraction, add Asia
Sulphuric acid or sulphite can suppress crossing of monosaccharide to decompose, it is achieved monosaccharide effectively.
The present invention about with acid-hydrolysis method (acid mashing system) process hemicellulose and (or) analyte Han hemicellulose
The method of liquid.The present invention use hemicellulose and (or) containing the liquid of hemicellulose analyte, hemicellulose is plant cell
To water-insoluble polysaccharose substance in addition to cellulose in wall, it is can be extracted from biomass by diluted alkaline, can be by sour water
Solving, molecular weight ratio cellulose is low on chemical constitution with cellulose family seemingly, the mixing of the different molecular of the degree of polymerization about about 150
Thing.In general, hemicellulose forms complex in plant cell wall together with cellulose and lignin and exists, because plant is different
Its existence ratio substantially about 30%.In hemicellulose, sweet possibly together with polydextrose in addition to xylan and poly-mannose
The complex polysaccharides such as dew sugar and polydextrose sourwood sugar.In the case of Jia the hemicellulose of the present invention contain xylose, mannose, half
At least one of main chain of lactose.
The present invention processes the liquid of object in addition to hemicellulose, containing hemicellulose analyte can also, but half is fine
Dimension element analyte refers to polysaccharide analyte recited above, such as oligosaccharide, disaccharide, monosaccharide.Such as, oligosaccharide has xylan oligomeric
Mannose oligosaccharide sugared, poly-, poly-GOS.Hemicellulose used in the present invention and (or) analyte Han hemicellulose
Liquid can obtain from various biomass.The liquid that obtains such as acid treatment gramineae plant and xylophyta, hot water treatment standing grain this
The liquid that liquid, alkali process gramineae plant and the xylophyta that plant and xylophyta obtain obtains.Biomass standing grain used is originally
Much less, foodstuff garbage etc., material containing hemicellulose fraction are good for plant and xylophyta.Xylophyta includes institute
Some needlebushs and leaf wood.Perennial plant length difference because of trunk having stem, just wood is also had any different.
In the present invention, use strong acid and sulfurous acid and (or) process above-mentioned liquid together with sulphite.In order to carry out
Acid hydrolysis saccharifying, strong acid used in the present invention refers to that pKa (acid ionization constant) is the material of less than 3, such as, hydrochloric acid, nitric acid, sulfur
Acid, perchloric acid, chloric acid, chlorous acid, bromic acid, iodic acid, iodic acid, Hydrogen thiocyanate, sulfamic acid, chromic acid, phosphorous acid, phosphoric acid, diphosphonic acid,
Triphosphoric acid, sulfurous acid, pyrosulfuric acid, selenic acid, Monohydrated selenium dioxide, arsenic acid, monoxone, dichloroacetic acid, trichloroacetic acid, trifluoroacetic acid, bitterness
Acid, malonic acid, oxalic acid (ethanedioic acid) etc..Though the addition of strong acid has no particular limits, but need to be according to the extracting solution of timber, wood
The pulverizing of sheet, the feature etc. of the object such as pulverizing of rice straw select to close add appropriate.The strong acid used by situation that the present invention is optimal is
The mineral acids such as sulphuric acid, hydrochloric acid, nitric acid.The pre-hydrolyzed solution obtained by sulphuric acid or hydrochloric acid prehydrolysis biomass and monosaccharide hot water treatment
In the case of, added in the past sulphuric acid or hydrochloric acid the most individually hydrolysis, and in the present invention strong acid and sulfurous acid and (or) sulfurous acid
Salt is used along.Sodium salt, calcium salt, magnesium salt, ammonium in sulfurous acid used in the present invention and sulphite (containing acid accumulator sulfite)
Salt is good, and wherein sodium salt is best.Sulfurous acid and sulphite powder and which kind of form of liquid can be used.Sulfurous acid
And (or) usage amount of sulphite has no particular limits, for relative 100 parts of quality strong acid, it is good for taking 10-80 part,
30-60 part is relatively good.Add strong acid and sulfurous acid and (or) pH value 2.0 (when 20 DEG C) of liquid the following is after sulphite
, 0.8-1.9 is reasonable, and 1.0-1.4 is best.The condition of hydrolysis is had no particular limits by the present invention, but warm
Degree is good when 100-250 DEG C, and when 100-200 DEG C preferably, 110-160 DEG C best.The process time-250 timesharing in 50 seconds is
Alright, 5 point of-210 timesharing is preferable, and 30 point of-200 timesharing is best.
The when of implementing the present invention, compared with former separate acid saccharifying, monosaccharide yield improves 3%～5% (based on biomass
In hemicellulose average yield).It addition, furfural, Hydroxymethylfurfural etc. hinder under the generation significantly of the harmful substance of fermentation
Fall.The reason producing this effect detailed is the most fully elucidated with.The present invention be used in mixed way strong acid and sulfurous acid and (or)
Sulphite, is more than because the effect of pH value power, and estimation is HSO in system3 -The appropriate reason existed, crosses to decompose and is pressed down
System, thus the yield of monosaccharide rises.Specifically, the occasion of independent strong acid, the monosaccharide that hydrolysis of hemicellulose obtains is under strong acid
Furfural is resolved in open loop, and at HSO3 -In the presence of define the adduct of various monosaccharide, thus prevent monosaccharide further point
Solve, improve the yield of monosaccharide.
In the present invention, during saccharifying timber hot water pre-hydrolyzed solution, first, the hemicellulose of hot water treatment is in the solution with outstanding
Floating state is extracted, and wherein lignin and base matter combine.With method of the present invention hydrolysis hot water treatment obtain above-mentioned
In the case of turbid solution, the OD280 value (absorbance of the light of 280nm) in solution significantly rises, and only with sulphuric acid hydrolysis
In the case of, the OD280 value in solution reduces on the contrary, and this is relevant with insoluble lignin class material.In the present invention, lignosulphonic acid is
Solvable, and only solvable lignin also has in the case of sulphuric acid, the lignin of insoluble condensation also has.Water in method the most of the present invention
In the case of solution, owing to substrate lignin is solvable present in hemicellulose, acid attack equably hemicellulose become easily,
The suppression of hydrolysis also becomes easy, thus brings the raising of yield.It addition, wherein the decomposition of crossing of sugar tails off in hydrolyzed solution, it is suitable for
Simulated moving bed chromatography method is used to separate.During with liquid such as saccharifying hot-water pretreatment liquid of the present invention, because of insoluble lignosulphonic acid
Becoming solvable material, a lot of suspended thing produced during hot water treatment becomes solvable, and the process performance of saccharified liquid is significantly
It is enhanced.
Claims (9)
1. a method for saccharifying for hemicellulose, is characterized in that, adds in hemicellulose or the liquid containing hemicellulose analyte
Add strong acid and sulfurous acid or sulphite；Mixing liquid pH value when 20 DEG C after adding strong acid and sulfurous acid or sulphite is
Less than 2.0, wherein relative to 100 parts of quality strong acid, add 10-80 part sulfurous acid or sulphite.
The method for saccharifying of hemicellulose the most according to claim 1, is characterized in that, hemicellulose or containing hemicellulose decompose
The liquid of thing is acid treatment gramineae plant and xylophyta obtains liquid, hot water treatment gramineae plant and xylophyta obtain
The liquid that liquid, alkali process gramineae plant and xylophyta obtain.
The method for saccharifying of hemicellulose the most according to claim 1, is characterized in that, described hemicellulose contains xylose, sweet
Dew sugar, a galactose main chain at least within.
4. according to the method for saccharifying of the hemicellulose described in claim 1,2 or 3, it is characterized in that, described sulphite is sulfurous
Acid sodium, calcium sulfite, magnesium sulfite, ammonium sulfite at least within a kind.
5. according to the method for saccharifying of the hemicellulose described in claim 1,2 or 3, it is characterized in that, described strong acid refers to that acid dissociation is normal
Number is the material of less than 3.
The method for saccharifying of hemicellulose the most according to claim 5, is characterized in that, described strong acid is sulphuric acid, hydrochloric acid or nitre
Acid.
The method for saccharifying of hemicellulose the most according to claim 1, is characterized in that, relative to 100 parts of quality strong acid, adds
30-60 part sulfurous acid or sulphite.
The method for saccharifying of hemicellulose the most according to claim 1, is characterized in that, adds strong acid and sulfurous acid or sulfurous acid
After salt liquid when 20 DEG C pH value between 0.8-1.9.
The method for saccharifying of hemicellulose the most according to claim 8, is characterized in that, adds strong acid and sulfurous acid or sulfurous acid
After salt liquid when 20 DEG C pH value between 1.0-1.4.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116144038A (en) * | 2022-11-02 | 2023-05-23 | 华南理工大学 | Method for preparing furfural, lignin sulfonate and high degradable cellulose by integrated multi-process coupling |
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| CN101161666A (en) * | 2007-09-18 | 2008-04-16 | 陈培豪 | Method for preparing main hydrolysate by hydrolyzing plant fiber material with concentrated sulfuric acid |
| CN102257164A (en) * | 2008-10-21 | 2011-11-23 | 丹尼斯克有限公司 | Process of producing xylose and dissolving pulp |
| CN102272313A (en) * | 2008-12-17 | 2011-12-07 | 挪威鲍利葛制造有限公司 | Lignocellulosic biomass conversion |
| CN105793329A (en) * | 2013-10-02 | 2016-07-20 | 巴斯夫欧洲公司 | Method for processing cellulose-containing biomass |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101161666A (en) * | 2007-09-18 | 2008-04-16 | 陈培豪 | Method for preparing main hydrolysate by hydrolyzing plant fiber material with concentrated sulfuric acid |
| CN102257164A (en) * | 2008-10-21 | 2011-11-23 | 丹尼斯克有限公司 | Process of producing xylose and dissolving pulp |
| CN102272313A (en) * | 2008-12-17 | 2011-12-07 | 挪威鲍利葛制造有限公司 | Lignocellulosic biomass conversion |
| CN105793329A (en) * | 2013-10-02 | 2016-07-20 | 巴斯夫欧洲公司 | Method for processing cellulose-containing biomass |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116144038A (en) * | 2022-11-02 | 2023-05-23 | 华南理工大学 | Method for preparing furfural, lignin sulfonate and high degradable cellulose by integrated multi-process coupling |
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