CN109722934A - A kind of bioanalysis dregs of a decoction pulping process - Google Patents
A kind of bioanalysis dregs of a decoction pulping process Download PDFInfo
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- CN109722934A CN109722934A CN201711053391.3A CN201711053391A CN109722934A CN 109722934 A CN109722934 A CN 109722934A CN 201711053391 A CN201711053391 A CN 201711053391A CN 109722934 A CN109722934 A CN 109722934A
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Abstract
The present invention is using the prescriptions worth thousand gold dregs of a decoction as raw material, bioanalysis slurrying is carried out to it using biological complex enzyme, bleached pulp is directly prepared in conjunction with microwave irradiation technology, the biological complex enzyme is prepared by the raw material of following weight percent: whiterot fungi 6 ~ 12%, Ficus virens 12 ~ 20%, zytase 24 ~ 30% and laccase 10 ~ 20%, the power of the microwave radiation is 1000 ~ 1500 W, and the time is 60 ~ 200 min.Bioanalysis dregs of a decoction pulping process provided by the invention solves the problems, such as that existing microwave irradiation technology pulping process is complicated；And focus on solving the situation that bioanalysis slurrying treatment effeciency is low, effect is poor, have the advantages that whiteness is high, Kappa number is low etc. using fiber prepared by bioanalysis dregs of a decoction pulping process provided by the invention, and entirely pulp preparing process is simple, any environmentally harmful substance will not be generated, there are good economic benefits.
Description
Technical field
The invention belongs to pulp and paper technology fields, and in particular, to a kind of bioanalysis dregs of a decoction pulping process.
Background technique
Chinese medicine slag is both the discarded object of power boiler discharge generated during medical processing enterprise production Chinese herbal medicine, while being also
The distinctive plant fiber resource of state, is the important raw material of pulp and paper industry.Chinese medicine slag is Chinese medicine by water or organic molten
Remaining residue after agent extraction, ingredient are mainly cellulose, hemicellulose and lignin, are planted since Chinese medicine is generally draft
Object is limited by chemical pulping process and equipment, the diversity of Chinese medicine slag resource and complexity and Chinese medicine slag institute fibre-bearing it is short and small,
Influence of the heteroproteose cell mostly with pigment weight, so that carrying out chemical pulping by a degree of obstruction using Chinese medicine slag.
Slurrying is produced using biotechnology in recent years, can effectively reduce production cost, improves pulp quality and maintenance papermaking
The method and product of Environmental security, it is as sticky in used zytase or lignin oxidation's enzyme bleaching paper pulp and improveing slurrying with enzyme
Degree.The many scholars of European and American countries attempt using whiterot fungi such as Phanerochaete chrysosporium and
Cereporiopsissubvermispora etc. is inoculated in chip pile, can be effectively removed the lignin in timber and be saved papermaking
The energy and cost, but whiterot fungi can only degrade certain lignins, and quite unrestrained in the time of outdoor inoculation whiterot fungi processing timber
It is long, it is difficult to realize technological industrialization.
It usually prepares dregs of a decoction bleached pulp to need by slurrying and two stages of bleaching, since there are color depths, Yi Jie for the dregs of a decoction
The features such as block, high sugar amount, direct boiling treated natural color pulp need to bleach work by one or more snippets because whiteness is lower
Skill removing residual lignin changes the structure of chromophoric group to improve pulp brightness.Generally producing must be by washing after natural color pulp
Washing removal residue chemistry boiling drug just can be carried out bleaching, and it is residual that this section of washing removal is equally also required to after bleaching each section
Remaining chemicals just can be carried out next section of bleaching.Whiteness can just be prepared by least needing 3~5 days time in actual operation
It is huge in the water that slurrying factory carries out being used to wash in continuous production remaining drug in 60% or more slurry, and waste water is also
It just can be carried out discharge or reuse after need to carrying out complicated purified treatment, cost for wastewater treatment is high.
Microwave be in extremely high frequency and very short wavelength electromagnetic wave, not only heat more rapidly, but also more uniform, can
To greatly shorten the time of material processing, the energy is saved.In microwave field, due to different molecular weight substance dielectric constant not
Together, the degree for absorbing microwave energy is different, and the thermal energy of generation and the thermal energy for passing to ambient enviroment are also different, this species diversity makes to make
Lignin components and low-molecular polysaccharide in slurry system are separated, and so that plant cell wall tissue is generated microcellular structure, are more advantageous to
The chemical reaction of subsequent delignification.But traditional multistep work is still pressed currently with microwave radiation progress slurrying and bleaching
Sequence carries out, and using the dregs of a decoction as plant material, the technology that bleached pulp is directly prepared using microwave irradiation technology is had not been reported.
Therefore, using China's Chinese medicine slag resource abundant, bleached pulp is prepared with wide development space using microwave irradiation technology.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the prior arts to lack using microwave irradiation technology pulping process is complicated
Problem sunken and that bioanalysis slurrying treatment effeciency is low, effect is poor, provides a kind of bioanalysis dregs of a decoction pulping process, is not only able to letter
The technique for changing microwave irradiation technology slurrying, moreover it is possible to effectively improve bioanalysis dregs of a decoction pulping efficiency.
The present invention is achieved by the following technical solutions:
A kind of bioanalysis dregs of a decoction pulping process, which comprises the following steps:
S1. after the dregs of a decoction being crushed, it is placed in water 10~30min of immersion, is then located in advance using microwave irradiation
Reason, for use；
S2. dregs of a decoction material deionized water step S1 obtained is impregnated and washing is taken off until washing water is neutrality
Water, dispersion, it is spare；
S3. the dregs of a decoction material that step S2 is obtained is placed in fermentation vat, biological complex enzyme is then added, after mixing evenly,
Under aerobic conditions, microwave irradiation technology is utilized again, and delignification processing is carried out to above-mentioned dregs of a decoction material；
S4. the slurry with water after delignification in step S3 being disposed is impregnated repeatedly, dispersed and is washed, until washing
After water is washed as neutrality, dehydration is sealed to get dregs of a decoction bleached pulp；
Preferably, the dregs of a decoction are the prescriptions worth thousand gold dregs of a decoction.
Preferably, the prescriptions worth thousand gold dregs of a decoction are very heavy group, cherokee rose root, Caulis Spatholobi, single side needle, leatherleaf mahonia, Herba Andrographitis, Radix Angelicae Sinensis
With Radix Codonopsis after water or ethyl alcohol extract remaining residue.
Preferably, the biological complex enzyme is prepared by the raw material of following weight percent: whiterot fungi 6~12%, Huang
Archespore Mao Pingcao bacterium 12~20%, zytase 24~30% and laccase 10~20%.
Preferably, the biological complex enzyme is prepared by the raw material of following weight percent: whiterot fungi 10%, yellow archespore
Mao Pingcao bacterium 15%, zytase 24% and laccase 15%.
The present invention uses the biological complex enzyme being made of whiterot fungi, Ficus virens, zytase and laccase, benefit
With reasonable compatibility between each strain and enzyme, jointly the effect coordinated, in the effectively degradation dregs of a decoction while a variety of lignins, additionally it is possible to
It persistently plays a role in the subsequent bleaching process of dregs of a decoction slurry.
Preferably, in step S1, the power of the microwave radiation is 400~700W, and the time is 20~40min.
Preferably, in step S1, the power of the microwave radiation is 600W, time 30min.
The present invention pre-processes the prescriptions worth thousand gold dregs of a decoction using microwave irradiation, not but not to the main of the prescriptions worth thousand gold dregs of a decoction
Composition fiber element has an impact, and the also very advantageous lignin components in the dregs of a decoction are separated, and generates plant cell wall tissue
Microcellular structure is more advantageous to the chemical reaction of subsequent delignification, meanwhile, the dregs of a decoction are pre-processed using microwave irradiation, also
The substance with bonding or glue blending function can be generated, these substances play the role of reinforcing fibre crosslinking, so that at the physics of paper
Performance is reinforced.
Preferably, in step S3, the biological complex enzyme additional amount is 1~2 kg/ton of material.
Preferably, in step S3, the power of the microwave radiation is 1000~1500W, and the time is 60~200min.
Preferably, in step S3, the power of the microwave radiation is 1200W, time 120min.
Preferably, the partial size of the prescriptions worth thousand gold dregs of a decoction is 0.5~3cm.
The present invention directly prepares bleached pulp using the dregs of a decoction as plant material, using microwave irradiation technology, simplifies the process of slurrying,
Any harmful substance will not be not only generated to environment during the reaction, but also its special treatment process makes the dregs of a decoction in de- wood
It is with the obvious advantage in element reaction.
The fiber that bioanalysis dregs of a decoction pulping process provided by the invention is prepared is for producing amenities paper.
Compared with prior art, bioanalysis dregs of a decoction pulping process provided by the invention has the advantage that
The present invention carries out bioanalysis slurrying by raw material of the prescriptions worth thousand gold dregs of a decoction for the first time, exists simultaneously draft according to the prescriptions worth thousand gold dregs of a decoction
Plant and broadleaf plant material this characteristic, using whiterot fungi, Ficus virens, zytase and laccase composition
Biological complex enzyme, the effect coordinated using reasonable compatibility between each strain and enzyme, jointly, a variety of lignins in the effectively degradation dregs of a decoction
While, additionally it is possible to it persistently plays a role in the subsequent bleaching process of dregs of a decoction slurry, realizes that slurrying is synchronous with bleaching and carry out, will pass
It is first wash, simplification of flowsheet that two sections, which are washed, before the drift of system and after drift.
The present invention directly prepares bleached pulp using the dregs of a decoction as plant material, using microwave irradiation technology, isolates from the dregs of a decoction
Lignin components make plant cell wall tissue generate microcellular structure, promote the decomposition of lignin macromolecule structure and the fracture of chemical bond,
It is more advantageous to the chemical reaction of subsequent delignification, can preferably dissolve out lignin in paper pulp, residual lignin content is low, bleaching efficiency
Height obtains the slurry that Kappa number is lower, whiteness is high.
Bioanalysis dregs of a decoction pulping process provided by the invention, pulp preparing process is simple, not only during the reaction will not
Any harmful substance is generated to environment, easy to operate, the time is short.
In conclusion the present invention solves the problems, such as that existing microwave irradiation technology pulping process is complicated；And focus on solving life
The object legal system slurry situation that treatment effeciency is low, effect is poor, the fiber prepared using bioanalysis dregs of a decoction pulping process provided by the invention
Have the advantages that whiteness is high, Kappa number is low etc., and entire pulp preparing process is simple, will not generate any environmentally harmful object
Matter has good economic benefits.
Specific embodiment
The present invention is further illustrated combined with specific embodiments below.Unless stated otherwise, it is used in the embodiment of the present invention
Raw material and method are the raw material of this field regular market purchase and conventional use of method, used equipment are that this field is routinely set
It is standby.
Embodiment 1
The present embodiment provides a kind of bioanalysis dregs of a decoction to prepare pulping process, specific steps are as follows:
S1. the prescriptions worth thousand gold dregs of a decoction are crushed to partial size is 0.5cm, is placed in water and impregnates 30min, then uses microwave irradiation
It is pre-processed, the power of microwave radiation is 400W, time 40min, for use；
S2. dregs of a decoction material deionized water step S1 obtained is impregnated and washing is taken off until washing water is neutrality
Water, dispersion, it is spare；
S3. the dregs of a decoction material that step S2 is obtained is placed in fermentation vat, 1 kg/ton of biological complex enzyme material is then added, stirs
After mixing uniformly, under aerobic conditions, microwave irradiation technology is utilized again, the power of microwave radiation is 1500W, time 60min,
Delignification processing is carried out to above-mentioned dregs of a decoction material；
S4. the slurry with water after delignification in step S3 being disposed is impregnated repeatedly, dispersed and is washed, until washing
After water is washed as neutrality, dehydration is sealed to get dregs of a decoction bleached pulp.
The prescriptions worth thousand gold dregs of a decoction are very heavy group, cherokee rose root, Caulis Spatholobi, single side needle, leatherleaf mahonia, Herba Andrographitis, Radix Angelicae Sinensis and Radix Codonopsis pass through
Remaining residue after water extracts.
Biological complex enzyme is prepared by the raw material of following weight percent: whiterot fungi 6%, Ficus virens
20%, zytase 24% and laccase 20%.
Embodiment 2
The present embodiment provides a kind of bioanalysis dregs of a decoction to prepare pulping process, difference from example 1 is that, step S1
In, the power of microwave radiation is 700W, time 20min.
Embodiment 3
The present embodiment provides a kind of bioanalysis dregs of a decoction to prepare pulping process, difference from example 1 is that, step S1
In, the power of microwave radiation is 600W, time 30min.
Embodiment 4
The present embodiment provides a kind of bioanalysis dregs of a decoction to prepare pulping process, specific steps are as follows:
S1. by the prescriptions worth thousand gold dregs of a decoction be crushed to partial size be 3cm, be placed in water impregnate 10min, then using microwave irradiation into
Row pretreatment, the power of microwave radiation are 600W, time 30min, for use；
S2. dregs of a decoction material deionized water step S1 obtained is impregnated and washing is taken off until washing water is neutrality
Water, dispersion, it is spare；
S3. the dregs of a decoction material that step S2 is obtained is placed in fermentation vat, 2 kg/ton of biological complex enzyme material is then added, stir
After mixing uniformly, under aerobic conditions, microwave irradiation technology is utilized again, and the power of microwave radiation is 1000W, and the time is
200min carries out delignification processing to above-mentioned dregs of a decoction material；
S4. the slurry with water after delignification in step S3 being disposed is impregnated repeatedly, dispersed and is washed, until washing
After water is washed as neutrality, dehydration is sealed to get dregs of a decoction bleached pulp.
The prescriptions worth thousand gold dregs of a decoction are very heavy group, cherokee rose root, Caulis Spatholobi, single side needle, leatherleaf mahonia, Herba Andrographitis, Radix Angelicae Sinensis and Radix Codonopsis pass through
Remaining residue after ethyl alcohol extracts.
Biological complex enzyme is prepared by the raw material of following weight percent: whiterot fungi 12%, Ficus virens
12%, zytase 30% and laccase 10%.
Embodiment 5
The present embodiment provides a kind of bioanalysis dregs of a decoction to prepare pulping process, with embodiment 4 the difference is that, step S3
In, the power of microwave radiation is 1200W, time 120min.
Embodiment 6
The present embodiment provides a kind of bioanalysis dregs of a decoction to prepare pulping process, with embodiment 4 the difference is that, step S3
In, the power of microwave radiation is 1400W, time 100min.
Embodiment 7
The present embodiment provides a kind of bioanalysis dregs of a decoction to prepare pulping process, specific steps are as follows:
S1. the prescriptions worth thousand gold dregs of a decoction are crushed to partial size is 1.5cm, is placed in water and impregnates 20min, then uses microwave irradiation
It is pre-processed, the power of microwave radiation is 600W, time 30min, for use；
S2. dregs of a decoction material deionized water step S1 obtained is impregnated and washing is taken off until washing water is neutrality
Water, dispersion, it is spare；
S3. the dregs of a decoction material that step S2 is obtained is placed in fermentation vat, 1.5 kg/ton of biological complex enzyme material is then added,
After mixing evenly, under aerobic conditions, microwave irradiation technology is utilized again, and the power of microwave radiation is 1200W, and the time is
120min carries out delignification processing to above-mentioned dregs of a decoction material；
S4. the slurry with water after delignification in step S3 being disposed is impregnated repeatedly, dispersed and is washed, until washing
After water is washed as neutrality, dehydration is sealed to get dregs of a decoction bleached pulp.
The prescriptions worth thousand gold dregs of a decoction are very heavy group, cherokee rose root, Caulis Spatholobi, single side needle, leatherleaf mahonia, Herba Andrographitis, Radix Angelicae Sinensis and Radix Codonopsis pass through
Remaining residue after ethyl alcohol extracts.
Biological complex enzyme is prepared by the raw material of following weight percent: whiterot fungi 10%, Ficus virens
15%, zytase 24% and laccase 15%.
Embodiment 8
The present embodiment provides a kind of bioanalysis dregs of a decoction to prepare pulping process, the difference is that, biology is multiple with embodiment 7
Synthase is prepared by the raw material of following weight percent: whiterot fungi 8%, Ficus virens 18%, zytase 26%
With laccase 18%.
Embodiment 9
The present embodiment provides a kind of bioanalysis dregs of a decoction to prepare pulping process, the difference is that, biology is multiple with embodiment 7
Synthase is prepared by the raw material of following weight percent: whiterot fungi 10%, Ficus virens 15%, zytase 28%
With laccase 12%.
Comparative example 1
This comparative example provides a kind of bioanalysis dregs of a decoction and prepares pulping process, with embodiment 7 the difference is that, step S1
In, after the prescriptions worth thousand gold dregs of a decoction are crushed, it is placed in water and impregnates 20min, for use.
Comparative example 2
This comparative example provides a kind of bioanalysis dregs of a decoction and prepares pulping process, with embodiment 7 the difference is that, step S3
In, the dregs of a decoction material that step S2 is obtained is placed in fermentation vat, 1.5 kg/ton of biological complex enzyme material are then added, stir evenly
Afterwards, under 40~50 DEG C of aerobic conditions, delignification processing is carried out to above-mentioned dregs of a decoction material.
Comparative example 3
This comparative example provides a kind of bioanalysis dregs of a decoction and prepares pulping process, with embodiment 7 the difference is that, step S3
In, the dregs of a decoction material that step S2 is obtained is placed in fermentation vat, 1.5 kg/ton of whiterot fungi material are then added, after mixing evenly,
Under aerobic conditions, microwave irradiation technology is utilized again, the power of microwave radiation is 1200W, time 120min, to above-mentioned medicine
Slag material carries out delignification processing.
Comparative example 4
This comparative example provides a kind of bioanalysis dregs of a decoction and prepares pulping process, with embodiment 7 the difference is that, with implementation
Example 7 the difference is that, in step S3, the dregs of a decoction material that step S2 is obtained is placed in fermentation vat, xylan is then added
1.5 kg/ton of enzyme material under aerobic conditions, utilize microwave irradiation technology, the power of microwave radiation is after mixing evenly again
1200W, time 120min carry out delignification processing to above-mentioned dregs of a decoction material.
Kappa number measurement and whiteness are carried out to the bleached pulp that the preparation method of embodiment 1-9 and comparative example 1-4 obtain,
In, Kappa number is measured according to standard GB/T/T1546-1989, and slurrying whiteness is according to standard GB/T/T8940.2-
1988, it the results are shown in Table 1.
Table 1
| Serial number | Kappa number | Whiteness/% |
| Embodiment 1 | 9.6 | 79 |
| Embodiment 2 | 8.2 | 76 |
| Embodiment 3 | 7.3 | 78 |
| Embodiment 4 | 7.6 | 75 |
| Embodiment 5 | 5.8 | 70 |
| Embodiment 6 | 6.9 | 73 |
| Embodiment 7 | 3.5 | 82 |
| Embodiment 8 | 4.9 | 80 |
| Embodiment 9 | 4.7 | 78 |
| Comparative example 1 | 10.9 | 79 |
| Comparative example 2 | 12.4 | 70 |
| Comparative example 3 | 9.7 | 58 |
| Comparative example 4 | 15.2 | 72 |
The result shows that the present invention directly prepares bleached pulp using the dregs of a decoction as plant material, using microwave irradiation technology, in conjunction with life
Synergistic effect in object complex enzyme between each strain and enzyme is not only able to a variety of lignins in the degradation dregs of a decoction, moreover it is possible to improve bleaching effect
Rate, the bleached pulp being prepared using bioanalysis dregs of a decoction pulping process provided by the invention, residual lignin content is low, and Kappa number is equal
Less than 10, whiteness can reach 80% or more.The present invention solves existing microwave irradiation technology system from the angle of environmental protection in a creative way
The defect of slurry process complexity and the bioanalysis slurrying processing problem that whiteness is low, effect is poor, make up the dregs of a decoction and carry out bioanalysis slurrying
Blank, realize slurrying progress synchronous with bleaching, simplification of flowsheet, with certain promotional value.
Detailed process equipment and processing step of the invention that the present invention is explained by the above embodiments, those skilled in the art
Member is not it should be appreciated that the present invention is limited by above-described embodiment, and the above embodiments and description only describe the present invention
Principle, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, this is to this field
It is it will be apparent that these changes and improvements all fall within the protetion scope of the claimed invention for technical staff.
Claims (10)
1. a kind of bioanalysis dregs of a decoction pulping process, which comprises the following steps:
S1. after the dregs of a decoction being crushed, it is placed in water 10 ~ 30 min of immersion, is then pre-processed using microwave irradiation, to
With；
S2. dregs of a decoction material deionized water step S1 obtained is impregnated and washing, until washing water is neutrality, be dehydrated,
Dispersion, it is spare；
S3. the dregs of a decoction material that step S2 is obtained is placed in fermentation vat, biological complex enzyme is then added, after mixing evenly, had
Under the conditions of oxygen, microwave irradiation technology is utilized again, and delignification processing is carried out to above-mentioned dregs of a decoction material；
S4. the slurry with water after delignification in step S3 being disposed is impregnated repeatedly, dispersed and is washed, until washing water
After neutrality, dehydration is sealed to get dregs of a decoction bleached pulp；
Wherein, the dregs of a decoction are the prescriptions worth thousand gold dregs of a decoction.
2. bioanalysis dregs of a decoction pulping process according to claim 1, which is characterized in that the prescriptions worth thousand gold dregs of a decoction be very heavy group,
Cherokee rose root, Caulis Spatholobi, single side needle, leatherleaf mahonia, Herba Andrographitis, Radix Angelicae Sinensis and the Radix Codonopsis remaining residue after water or ethyl alcohol extract.
3. bioanalysis dregs of a decoction pulping process according to claim 1, which is characterized in that the biological complex enzyme is by following weight
The raw material of percentage is prepared: whiterot fungi 6 ~ 12%, Ficus virens 12 ~ 20%, zytase 24 ~ 30% and laccase 10 ~
20%。
4. bioanalysis dregs of a decoction pulping process according to claim 2, it is characterised in that the biological complex enzyme is by following weight
The raw material of percentage is prepared: whiterot fungi 10%, Ficus virens 15%, zytase 24% and laccase 15%.
5. bioanalysis dregs of a decoction pulping process according to claim 1, which is characterized in that in step S1, the microwave radiation
Power is 400 ~ 700 W, and the time is 20 ~ 40 min.
6. bioanalysis dregs of a decoction pulping process according to claim 5, which is characterized in that in step S1, the microwave radiation
Power is 600 W, and the time is 30 min.
7. bioanalysis dregs of a decoction pulping process according to claim 1, which is characterized in that in step S3, the biological complex enzyme
Additional amount is 1 ~ 2 kg/ton of material.
8. bioanalysis dregs of a decoction pulping process according to claim 1, which is characterized in that in step S3, the microwave radiation
Power is 1000 ~ 1500 W, and the time is 60 ~ 200 min.
9. bioanalysis dregs of a decoction pulping process according to claim 7, which is characterized in that in step S3, the microwave radiation
Power is 1200 W, and the time is 120 min.
10. any one bioanalysis dregs of a decoction pulping process preparation gained dregs of a decoction bleached pulp can be used for giving birth to according to claim 1 ~ 9
Produce amenities paper.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1696396A (en) * | 2005-04-28 | 2005-11-16 | 湖北工业大学 | Microwave method for preprocessing pulping raw material |
| CN102345244A (en) * | 2010-08-05 | 2012-02-08 | 王凤忠 | Pulping and papermaking process through multiple-composition biological enzyme method |
| CN104005247A (en) * | 2014-05-15 | 2014-08-27 | 昆明理工大学 | Microwave-assisted preparation method of bagasse bleached pulp |
| CN106245418A (en) * | 2016-09-07 | 2016-12-21 | 天津科技大学 | A kind of method utilizing Chinese herb residues to prepare natural color pulp and utilize the method that this natural color pulp prepares true qualities package paper |
| CN107083711A (en) * | 2017-02-04 | 2017-08-22 | 深圳市龙城生物科技股份有限公司 | A kind of biological complex enzyme and its method for stalk papermaking |
-
2017
- 2017-10-31 CN CN201711053391.3A patent/CN109722934A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1696396A (en) * | 2005-04-28 | 2005-11-16 | 湖北工业大学 | Microwave method for preprocessing pulping raw material |
| CN102345244A (en) * | 2010-08-05 | 2012-02-08 | 王凤忠 | Pulping and papermaking process through multiple-composition biological enzyme method |
| CN104005247A (en) * | 2014-05-15 | 2014-08-27 | 昆明理工大学 | Microwave-assisted preparation method of bagasse bleached pulp |
| CN106245418A (en) * | 2016-09-07 | 2016-12-21 | 天津科技大学 | A kind of method utilizing Chinese herb residues to prepare natural color pulp and utilize the method that this natural color pulp prepares true qualities package paper |
| CN107083711A (en) * | 2017-02-04 | 2017-08-22 | 深圳市龙城生物科技股份有限公司 | A kind of biological complex enzyme and its method for stalk papermaking |
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Application publication date: 20190507 |