CN109851693A - A kind of method of hemicellulose, cellulose and lignin in quick separating bagasse - Google Patents
A kind of method of hemicellulose, cellulose and lignin in quick separating bagasse Download PDFInfo
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Abstract
A kind of method that the present invention discloses hemicellulose, cellulose and lignin in quick separating bagasse, the bagasse powder of over dry is added in the p-methyl benzenesulfonic acid solution of heating water bath and reacts 15-40min, the distilled water of addition terminates reaction, separating filtrate and filter residue, filter residue are the cellulose in bagasse；Distilled water is added in filtrate, is centrifugated after standing, removes supernatant, centrifuge washing sediment obtains the lignin in bagasse；P-methyl benzenesulfonic acid solution of the invention can be under the conditions of lower temperature, normal pressure, short period, cellulose, hemicellulose and lignin in bagasse is sufficiently separated, quickly and efficiently, in reaction process, lignin yield is up to 90% or more, hemicellulose is degradable to be removed at monosaccharide, cellulose is hardly destroyed, the present invention has cast aside tradition, harmful, method complicated for operation, turn to cleaning, efficient, the easy new way of operation, reaction condition is mild, highly-safe, and market potential is huge.
Description
Technical field
The present invention relates to biorefinery technical field, hemicellulose in a kind of quick separating bagasse is more particularly related to
The method of element, cellulose and lignin.
Background technique
Global to generate about 75,000,000,000 tons of plant celluloses every year, cellulose is a kind of abundance, renewable, can biology
The biopolymer of degradation.Cellulose is one of the most abundant natural polymer on the earth, is mainly derived from trees and other are high
Equal plants, are the renewable resources that nature is inexhaustible, nexhaustible.Due to oil crisis and in recent years petrochemical materials valence
Lattice soar, and especially negatively affect using oil product as the synthesis macromolecule of raw material to environment and human health bring, with fiber
Biological degradability, biocompatibility and the features such as easy derivatization of element, form sharp contrast, and people is made to concentrate on fibre
It ties up on this plain renewable resource, all kinds of cellulose theoretical researches and deep process technology enter height since the 1970s
In the stage of speed development, one of the natural macromolecular material of most value of exploiting and utilizing is become.Cellulose is demonstrate,proved at present
It is bright that there are a variety of applications, including in plastic-substitute, electronics, the energy, the fields such as biomedical and photonics.
Bagasse is that sugarcane is remaining after squeezing sugar, is made of fibrocyte and heteroproteose cell (mostly parenchyma cell)
Solid residue, abbreviation bagasse.Bagasse is a kind of common cellulose-containing industrial crops of richness.However, the high level of bagasse
Change application and remain in a lower level at present, main reason is that lignin and half fiber in cellulose and cell wall
The close weave in of dimension element, it is difficult to effectively cellulose be separated.Lignin is in natural glue, additive and table
The age of face activating agent and there is potential application value.The method of separation cellulose mainly has alkaline process, diluted acid method, ion at present
Liquid processes, organic solvent and sulphite process.However, these methods not only high production cost, the high requirements on the equipment, Er Qiefen
From relatively inefficient, it is difficult to promote the use of.Therefore, how to clean, efficiently separate cellulose in bagasse, hemicellulose
Element and lignin are the critical issues that the present invention needs to solve.
Summary of the invention
It is an object of the invention to overcome defect of the existing technology, hemicellulose in a kind of quick separating bagasse is provided
The method of element, cellulose and lignin.
To achieve the goals above, The technical solution adopted by the invention is as follows:
The method of hemicellulose, cellulose and lignin, includes the following steps: in quick separating bagasse of the invention
(1) bagasse is crushed, is sieved, is dried to absolute dry condition；Take the p-methyl benzenesulfonic acid that mass fraction is 75-85% molten
Then liquid heating water bath is added the bagasse powder of over dry, 15-40min is reacted under stirring, is then taken to 75-85 DEG C
Reaction mass out, and the distilled water for being added 20-25 DEG C terminates reaction；
(2) reaction mass of sand core funnel filtration step (1), separating filtrate and filter residue, washing filter residue to cleaning solution are used
For neutrality, the filter residue being dried in vacuo after washing obtains the cellulose in bagasse；
(3) it is added distilled water in the filtrate of step (2), stands and be centrifugated 10-25min after 60-150min, in removal
Clear liquid, obtained sediment are the lignin in bagasse；
(4) lignin of step (3), specific washing step are washed with distilled water are as follows: distilled water is added in lignin, centrifugation is washed
10-25min is washed, filters, takes filter residue；Above-mentioned washing step takes the lignin of washes clean after repeating 2-4 times, vacuum drying obtains
Lignin in bagasse.
Preferably, bagasse is smashed it through into 50-60 mesh in the step (1).
Preferably, the solid-to-liquid ratio of the bagasse powder of over dry and p-methyl benzenesulfonic acid solution is 1:10- in the step (1)
30。
Preferably, the ratio of quality and p-methyl benzenesulfonic acid solution quality that distilled water is added in the step (1) is 1-1.5:
1。
Preferably, the sand core funnel of the step (2) is G2 sand core funnel.
Preferably, in the step (3), it is small that distilled water mass fraction of p-methyl benzenesulfonic acid into filtrate is added in filtrate
In 11%.
Preferably, the revolving speed being centrifugated in the step (3) is 4000-6000rpm.
Preferably, the revolving speed being centrifugated in the step (3) is 5000rpm.
Preferably, the revolving speed being centrifugated in the step (4) is 4000-6000rpm.
The present invention is by adopting the above-described technical solution, have the advantages that
The present invention extracts cellulose, hemicellulose and lignin in bagasse using p-methyl benzenesulfonic acid solution respectively, highly concentrated
The p-methyl benzenesulfonic acid solution of degree can fast degradation lignin and hemicellulose, but non-degradable cellulose, when p-methyl benzenesulfonic acid is molten
When liquid concentration is lower than 11%, the lignin dissolved out can be precipitated again and form precipitating, and hemicellulose is degraded in the form of a solution
In the presence of can be separated to hemicellulose, hemicellulose, lignin in bagasse using the above characteristic.
In separation method of the invention, p-methyl benzenesulfonic acid solution can be in lower temperature (75 DEG C), normal pressure, short period
Under conditions of (15min), cellulose, hemicellulose and the lignin in bagasse are sufficiently separated, quickly and efficiently.Reaction
In the process, lignin yield is up to 90% or more, and hemicellulose is degradable to be removed at monosaccharide, and cellulose is hardly destroyed.
And the prior art, high temperature (170 DEG C), high pressure, the condition of long period (4h or more) are mostly used greatly, and the two is compared, and the present invention is thrown
Tradition, harmful, method complicated for operation have been opened, has turned to cleaning, efficient, the easy new way of operation, reaction condition is mild, improves
Safety has huge market potential.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, preferred embodiment is enumerated below, to this hair
Bright further description.However, it is necessary to illustrate, many details listed in specification are used for the purpose of making reader to this
The one or more aspects of invention have a thorough explanation, also may be implemented even without these specific details of the invention
These aspects.
The method of hemicellulose, cellulose and lignin in the quick separating bagasse of the invention of embodiment 1, including it is as follows
Step:
(1) bagasse is crushed, crosses 50 meshes, is dried to absolute dry condition；Taking mass fraction is 75% p-methyl benzenesulfonic acid
Solution water-bath is heated to 75 DEG C, and the bagasse powder of over dry, solid-to-liquid ratio 1:15 is then added；It is reacted under stirring
40min then takes out reaction mass, and the distilled water for being added 20 DEG C terminates reaction, the quality of distilled water is added and to toluene sulphur
The ratio of acid solution quality is 1:1；
(2) reaction mass of G2 sand core funnel filtration step (1), separating filtrate and filter residue are used, filter is washed with distilled water
Slag to cleaning solution is neutrality, and the filter residue after vacuum drying washing obtains the cellulose in bagasse；
(3) mass fraction that distilled water p-methyl benzenesulfonic acid into filtrate is added in the filtrate of step (2) is 10.5%, quiet
It is centrifugated 25min, centrifugal rotational speed 5000rpm after setting 60min, removes supernatant, obtained sediment is in bagasse
Lignin；
(4) lignin of step (3), specific washing step are washed with distilled water are as follows: distilled water is added in lignin, centrifugation is washed
10min, centrifugal rotational speed 4000rpm are washed, filters, takes filter residue；Above-mentioned washing step takes the lignin of washes clean after being repeated 4 times,
Vacuum drying, obtains the lignin in bagasse.
Embodiment 2
The method of hemicellulose, cellulose and lignin, includes the following steps: in quick separating bagasse of the invention
(1) bagasse is crushed, crosses 60 meshes, is dried to absolute dry condition；Taking mass fraction is 76% p-methyl benzenesulfonic acid
Solution water-bath is heated to 77 DEG C, and the bagasse powder of over dry, solid-to-liquid ratio 1:17 is then added；It is reacted under stirring
38min then takes out reaction mass, and the distilled water for being added 21 DEG C terminates reaction, the quality of distilled water is added and to toluene sulphur
The ratio of acid solution quality is 1.1:1；
(2) reaction mass of G2 sand core funnel filtration step (1), separating filtrate and filter residue are used, filter is washed with distilled water
Slag to cleaning solution is neutrality, and the filter residue after vacuum drying washing obtains the cellulose in bagasse；
(3) mass fraction that distilled water p-methyl benzenesulfonic acid into filtrate is added in the filtrate of step (2) is 10%, is stood
It is centrifugated 23min, centrifugal rotational speed 4000rpm after 70min, removes supernatant, obtained sediment is the wood in bagasse
Element；
(4) lignin of step (3), specific washing step are washed with distilled water are as follows: distilled water is added in lignin, centrifugation is washed
12min, centrifugal rotational speed 4200rpm are washed, filters, takes filter residue；Above-mentioned washing step takes the lignin of washes clean after being repeated 3 times,
Vacuum drying, obtains the lignin in bagasse.
Embodiment 3
The method of hemicellulose, cellulose and lignin, includes the following steps: in quick separating bagasse of the invention
(1) bagasse is crushed, crosses 50 meshes, is dried to absolute dry condition；Taking mass fraction is 77% p-methyl benzenesulfonic acid
Solution water-bath is heated to 76 DEG C, and the bagasse powder of over dry, solid-to-liquid ratio 1:18 is then added；It is reacted under stirring
36min then takes out reaction mass, and the distilled water for being added 22 DEG C terminates reaction, the quality of distilled water is added and to toluene sulphur
The ratio of acid solution quality is 1.2:1；
(2) reaction mass of G2 sand core funnel filtration step (1), separating filtrate and filter residue are used, filter is washed with distilled water
Slag to cleaning solution is neutrality, and the filter residue after vacuum drying washing obtains the cellulose in bagasse；
(3) mass fraction that distilled water p-methyl benzenesulfonic acid into filtrate is added in the filtrate of step (2) is 9.8%, quiet
It is centrifugated 21min, centrifugal rotational speed 4300rpm after setting 80min, removes supernatant, obtained sediment is in bagasse
Lignin；
(4) lignin of step (3), specific washing step are washed with distilled water are as follows: distilled water is added in lignin, centrifugation is washed
14min, centrifugal rotational speed 4500rpm are washed, filters, takes filter residue；Above-mentioned washing step takes the lignin of washes clean after being repeated 2 times,
Vacuum drying, obtains the lignin in bagasse.
Embodiment 4
The method of hemicellulose, cellulose and lignin, includes the following steps: in quick separating bagasse of the invention
(1) bagasse is crushed, crosses 60 meshes, is dried to absolute dry condition；Taking mass fraction is 78% p-methyl benzenesulfonic acid
Solution water-bath is heated to 80 DEG C, and the bagasse powder of over dry, solid-to-liquid ratio 1:10 is then added；It is reacted under stirring
20min then takes out reaction mass, and the distilled water for being added 23 DEG C terminates reaction, the quality of distilled water is added and to toluene sulphur
The ratio of acid solution quality is 1.3:1；
(2) reaction mass of G2 sand core funnel filtration step (1), separating filtrate and filter residue are used, filter is washed with distilled water
Slag to cleaning solution is neutrality, and the filter residue after vacuum drying washing obtains the cellulose in bagasse；
(3) mass fraction that distilled water p-methyl benzenesulfonic acid into filtrate is added in the filtrate of step (2) is 9%, is stood
It is centrifugated 20min, centrifugal rotational speed 4500rpm after 90min, removes supernatant, obtained sediment is the wood in bagasse
Element；
(4) lignin of step (3), specific washing step are washed with distilled water are as follows: distilled water is added in lignin, centrifugation is washed
16min, centrifugal rotational speed 4800rpm are washed, filters, takes filter residue；Above-mentioned washing step takes the lignin of washes clean after being repeated 3 times,
Vacuum drying, obtains the lignin in bagasse.
Embodiment 5
The method of hemicellulose, cellulose and lignin, includes the following steps: in quick separating bagasse of the invention
(1) bagasse is crushed, crosses 50 meshes, is dried to absolute dry condition；Taking mass fraction is 79% p-methyl benzenesulfonic acid
Solution water-bath is heated to 79 DEG C, and the bagasse powder of over dry, solid-to-liquid ratio 1:12 is then added；It is reacted under stirring
33min then takes out reaction mass, and the distilled water for being added 24 DEG C terminates reaction, the quality of distilled water is added and to toluene sulphur
The ratio of acid solution quality is 1.4:1；
(2) reaction mass of G2 sand core funnel filtration step (1), separating filtrate and filter residue are used, filter is washed with distilled water
Slag to cleaning solution is neutrality, and the filter residue after vacuum drying washing obtains the cellulose in bagasse；
(3) mass fraction that distilled water p-methyl benzenesulfonic acid into filtrate is added in the filtrate of step (2) is 8.8%, quiet
It is centrifugated 18min, centrifugal rotational speed 4800rpm after setting 100min, removes supernatant, obtained sediment is in bagasse
Lignin；
(4) lignin of step (3), specific washing step are washed with distilled water are as follows: distilled water is added in lignin, centrifugation is washed
18min, centrifugal rotational speed 5000rpm are washed, filters, takes filter residue；Above-mentioned washing step takes the lignin of washes clean after being repeated 4 times,
Vacuum drying, obtains the lignin in bagasse.
Embodiment 6
The method of hemicellulose, cellulose and lignin, includes the following steps: in quick separating bagasse of the invention
(1) bagasse is crushed, crosses 60 meshes, is dried to absolute dry condition；Taking mass fraction is 80% p-methyl benzenesulfonic acid
Solution water-bath is heated to 80 DEG C, and the bagasse powder of over dry, solid-to-liquid ratio 1:20 is then added；It is reacted under stirring
27min then takes out reaction mass, and the distilled water for being added 25 DEG C terminates reaction, the quality of distilled water is added and to toluene sulphur
The ratio of acid solution quality is 1.5:1；
(2) reaction mass of G2 sand core funnel filtration step (1), separating filtrate and filter residue are used, filter is washed with distilled water
Slag to cleaning solution is neutrality, and the filter residue after vacuum drying washing obtains the cellulose in bagasse；
(3) mass fraction that distilled water p-methyl benzenesulfonic acid into filtrate is added in the filtrate of step (2) is 8%, is stood
It is centrifugated 16min, centrifugal rotational speed 5100rpm after 110min, removes supernatant, obtained sediment is the wood in bagasse
Element；
(4) lignin of step (3), specific washing step are washed with distilled water are as follows: distilled water is added in lignin, centrifugation is washed
19min, centrifugal rotational speed 5200rpm are washed, filters, takes filter residue；Above-mentioned washing step takes the lignin of washes clean after being repeated 3 times,
Vacuum drying, obtains the lignin in bagasse.
Embodiment 7
The method of hemicellulose, cellulose and lignin, includes the following steps: in quick separating bagasse of the invention
(1) bagasse is crushed, crosses 50 meshes, is dried to absolute dry condition；Taking mass fraction is 81% p-methyl benzenesulfonic acid
Solution water-bath is heated to 81 DEG C, and the bagasse powder of over dry, solid-to-liquid ratio 1:22 is then added；It is reacted under stirring
23min then takes out reaction mass, and the distilled water for being added 24 DEG C terminates reaction, the quality of distilled water is added and to toluene sulphur
The ratio of acid solution quality is 1.4:1；
(2) reaction mass of G2 sand core funnel filtration step (1), separating filtrate and filter residue are used, filter is washed with distilled water
Slag to cleaning solution is neutrality, and the filter residue after vacuum drying washing obtains the cellulose in bagasse；
(3) mass fraction that distilled water p-methyl benzenesulfonic acid into filtrate is added in the filtrate of step (2) is 7.5%, quiet
It is centrifugated 15min, centrifugal rotational speed 5300rpm after setting 120min, removes supernatant, obtained sediment is in bagasse
Lignin；
(4) lignin of step (3), specific washing step are washed with distilled water are as follows: distilled water is added in lignin, centrifugation is washed
21min, centrifugal rotational speed 5500rpm are washed, filters, takes filter residue；Above-mentioned washing step takes the lignin of washes clean after being repeated 2 times,
Vacuum drying, obtains the lignin in bagasse.
Embodiment 8
The method of hemicellulose, cellulose and lignin, includes the following steps: in quick separating bagasse of the invention
(1) bagasse is crushed, crosses 60 meshes, is dried to absolute dry condition；Taking mass fraction is 82% p-methyl benzenesulfonic acid
Solution water-bath is heated to 82 DEG C, and the bagasse powder of over dry, solid-to-liquid ratio 1:25 is then added；It is reacted under stirring
18min then takes out reaction mass, and the distilled water for being added 23 DEG C terminates reaction, the quality of distilled water is added and to toluene sulphur
The ratio of acid solution quality is 1.3:1；
(2) reaction mass of G2 sand core funnel filtration step (1), separating filtrate and filter residue are used, filter is washed with distilled water
Slag to cleaning solution is neutrality, and the filter residue after vacuum drying washing obtains the cellulose in bagasse；
(3) mass fraction that distilled water p-methyl benzenesulfonic acid into filtrate is added in the filtrate of step (2) is 7.8%, quiet
It is centrifugated 14min, centrifugal rotational speed 5600rpm after setting 130min, removes supernatant, obtained sediment is in bagasse
Lignin；
(4) lignin of step (3), specific washing step are washed with distilled water are as follows: distilled water is added in lignin, centrifugation is washed
23min, centrifugal rotational speed 5700rpm are washed, filters, takes filter residue；Above-mentioned washing step takes the lignin of washes clean after being repeated 2 times,
Vacuum drying, obtains the lignin in bagasse.
Embodiment 9
The method of hemicellulose, cellulose and lignin, includes the following steps: in quick separating bagasse of the invention
(1) bagasse is crushed, crosses 50 meshes, is dried to absolute dry condition；Taking mass fraction is 84% p-methyl benzenesulfonic acid
Solution water-bath is heated to 84 DEG C, and the bagasse powder of over dry, solid-to-liquid ratio 1:28 is then added；It is reacted under stirring
15min then takes out reaction mass, and the distilled water for being added 22 DEG C terminates reaction, the quality of distilled water is added and to toluene sulphur
The ratio of acid solution quality is 1.2:1；
(2) reaction mass of G2 sand core funnel filtration step (1), separating filtrate and filter residue are used, filter is washed with distilled water
Slag to cleaning solution is neutrality, and the filter residue after vacuum drying washing obtains the cellulose in bagasse；
(3) mass fraction that distilled water p-methyl benzenesulfonic acid into filtrate is added in the filtrate of step (2) is 8.6%, quiet
It is centrifugated 12min, centrifugal rotational speed 5850rpm after setting 140min, removes supernatant, obtained sediment is in bagasse
Lignin；
(4) lignin of step (3), specific washing step are washed with distilled water are as follows: distilled water is added in lignin, centrifugation is washed
24min, centrifugal rotational speed 5900rpm are washed, filters, takes filter residue；Above-mentioned washing step takes the lignin of washes clean after being repeated 3 times,
Vacuum drying, obtains the lignin in bagasse.
Embodiment 10
The method of hemicellulose, cellulose and lignin, includes the following steps: in quick separating bagasse of the invention
(1) bagasse is crushed, crosses 60 meshes, is dried to absolute dry condition；Taking mass fraction is 85% p-methyl benzenesulfonic acid
Solution water-bath is heated to 85 DEG C, and the bagasse powder of over dry, solid-to-liquid ratio 1:30 is then added；It is reacted under stirring
10min then takes out reaction mass, and the distilled water for being added 21 DEG C terminates reaction, the quality of distilled water is added and to toluene sulphur
The ratio of acid solution quality is 1.1:1；
(2) reaction mass of G2 sand core funnel filtration step (1), separating filtrate and filter residue are used, filter is washed with distilled water
Slag to cleaning solution is neutrality, and the filter residue after vacuum drying washing obtains the cellulose in bagasse；
(3) mass fraction that distilled water p-methyl benzenesulfonic acid into filtrate is added in the filtrate of step (2) is 9.2%, quiet
It is centrifugated 10min, centrifugal rotational speed 6000rpm after setting 150min, removes supernatant, obtained sediment is in bagasse
Lignin；
(4) lignin of step (3), specific washing step are washed with distilled water are as follows: distilled water is added in lignin, centrifugation is washed
25min, centrifugal rotational speed 6000rpm are washed, filters, takes filter residue；Above-mentioned washing step takes the lignin of washes clean after being repeated 4 times,
Vacuum drying, obtains the lignin in bagasse.
Properties of product analysis
Measure the content of cellulose, hemicellulose and lignin in the over dry bagasse raw material of embodiment 1-10, obtained fibre
The quality of plain product and lignin products is tieed up, measurement result is shown in Table 1.
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Lignin yield % | 92.3 | 90.6 | 93.8 | 91.5 | 92.4 |
| Cellulose loss rate % | 8.8 | 7.9 | 8.0 | 7.5 | 8.3 |
| Project | Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 10 |
| Lignin yield % | 93.3 | 92.9 | 93.0 | 91.7 | 92.1 |
| Cellulose loss rate % | 7.7 | 7.4 | 8.2 | 7.9 | 8.0 |
Table 1
As shown in table 1, using separation method of the invention, the delignification rate in bagasse is high, and lignin yield exists
90% or more, lignin average yield has reached 92.36%；Cellulose loss amount is few, cellulose loss rate 8.8% hereinafter,
Average fiber element loss late is 7.97%.Separation method of the invention can quickly, efficiently, the leniently fiber in separation of sugarcane slag
Element, hemicellulose and lignin, cellulose are hardly destroyed, and lignin yield reaches 90% or more, and hemicellulose is degraded completely
It is removed at monosaccharide, three kinds of ingredients can be extracted individually, and reaction condition is mild, highly-safe.
Claims (9)
1. a kind of method of hemicellulose, cellulose and lignin in quick separating bagasse, which is characterized in that including walking as follows
It is rapid:
(1) bagasse is crushed, is sieved, is dried to absolute dry condition；Taking mass fraction is the p-methyl benzenesulfonic acid solution water of 75-85%
Bath is heated to 75-85 DEG C, and the bagasse powder of over dry is then added, reacts 15-40min under stirring, then takes out anti-
Material is answered, and the distilled water for being added 20-25 DEG C terminates reaction；
(2) reaction mass of sand core funnel filtration step (1), separating filtrate and filter residue are used, during washing filter residue to cleaning solution is
Property, the filter residue after vacuum drying washing obtains the cellulose in bagasse；
(3) distilled water is added in the filtrate of step (2), is centrifugated 10-25min after standing 60-150min, removes supernatant
Liquid, obtained sediment are the lignin in bagasse；
(4) lignin of step (3), specific washing step are washed with distilled water are as follows: distilled water, centrifuge washing are added in lignin
10-25min, filtering, takes filter residue；Above-mentioned washing step takes the lignin of washes clean after repeating 2-4 times, vacuum drying obtains sweet
Lignin in bagasse.
2. the method for hemicellulose, cellulose and lignin, feature in quick separating bagasse according to claim 1
It is, bagasse is smashed it through into 50-60 mesh in the step (1).
3. the method for hemicellulose, cellulose and lignin, feature in quick separating bagasse according to claim 1
It is, the solid-to-liquid ratio of the bagasse powder of over dry and p-methyl benzenesulfonic acid solution is 1:10-30 in the step (1).
4. the method for hemicellulose, cellulose and lignin, feature in quick separating bagasse according to claim 1
It is, the ratio of quality and p-methyl benzenesulfonic acid solution quality that distilled water is added in the step (1) is 1-1.5:1.
5. the method for hemicellulose, cellulose and lignin, feature in quick separating bagasse according to claim 1
It is, the sand core funnel of the step (2) is G2 sand core funnel.
6. the method for hemicellulose, cellulose and lignin, feature in quick separating bagasse according to claim 1
It is, in the step (3), the mass fraction of distilled water p-methyl benzenesulfonic acid into filtrate is added in filtrate less than 11%.
7. the method for hemicellulose, cellulose and lignin, feature in quick separating bagasse according to claim 1
It is, the revolving speed being centrifugated in the step (3) is 4000-6000rpm.
8. the method for hemicellulose, cellulose and lignin, feature in quick separating bagasse according to claim 7
It is, the revolving speed being centrifugated in the step (3) is 5000rpm.
9. the method for hemicellulose, cellulose and lignin, feature in quick separating bagasse according to claim 1
It is, the revolving speed being centrifugated in the step (4) is 4000-6000rpm.
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| CN112480429A (en) * | 2020-12-09 | 2021-03-12 | 国际竹藤中心 | Preparation method and application of bamboo nano lignin sun-screening agent |
| CN112552925A (en) * | 2020-12-14 | 2021-03-26 | 北部湾海洋新材料研究院 | Drought-resistant water-retaining material for agriculture and forestry |
| CN113121723A (en) * | 2021-04-07 | 2021-07-16 | 广西大学 | Method for efficiently extracting hemicellulose solid from p-toluenesulfonic acid |
| CN113480582A (en) * | 2021-06-30 | 2021-10-08 | 广东工业大学 | Green and cyclic comprehensive utilization method for agricultural and forestry solid wastes |
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| CN115368474A (en) * | 2022-09-06 | 2022-11-22 | 绍兴文理学院 | Preparation method of vinasse-based lyocell fiber pulp |
| CN115368474B (en) * | 2022-09-06 | 2023-11-28 | 绍兴文理学院 | Preparation method of vinasse-based lyocell fiber pulp |
| WO2024051158A1 (en) * | 2022-09-06 | 2024-03-14 | 绍兴文理学院 | Preparation method for distillers grain-based lyocell fiber pulp |
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