CN103898779A - Method for preparing Chinese art paper pulp - Google Patents
Method for preparing Chinese art paper pulp Download PDFInfo
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- CN103898779A CN103898779A CN201210567739.1A CN201210567739A CN103898779A CN 103898779 A CN103898779 A CN 103898779A CN 201210567739 A CN201210567739 A CN 201210567739A CN 103898779 A CN103898779 A CN 103898779A
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- paper
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- bark
- bleaching
- paper mulberry
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Abstract
The invention provides a method for preparing Chinese art paper pulp, belongs to the field of bast fiber resource utilization, and particularly relates to a method for preparing high-quality clean paper pulp of Chinese art paper and the like through paper mulberry bark steam explosion degumming. In the method, firstly, steam explosion treatment is carried out on paper mulberry barks, and rinsing and bleaching are carried out to obtain the high-quality pulp. Eighty percent of pectin and hemicellulose in paper mulberry bark fibers are degraded through non-pollution steam explosion treatment, lignin is partially degraded, the outer bark (black bark) of paper mulberry is completely separated from inner-layer bast, black tissue on the outer bark can be removed after rinsing, the bark fibers are torn to be of a loosened structure in the steam explosion process, medicine can sufficiently permeate in the sintering process, and the whiteness of the pulp is improved. By means of the method, industrialization cost spent in paper mulberry bark paper making is reduced, the environment is prevented from being polluted by chemical pulp preparing, and the yield and quality of the pulp can be improved, wherein the pulp can be used for making top-grade paper like Chinese art paper and money printing paper. The method provides a new way for high-value utilization of clean paper mulberry bark resources, and larger economic and social benefits can be generated.
Description
Technical field
The present invention relates to a kind of method of preparing the paper pulp such as rice paper.
Background technology
Paper mulberry has another name called Paper mulberry Fruit, Chu Shu, sandpaper tree, Gu Mu, paddy slurry tree, is Moraceae, and paper mulberry belongs to, perennial deciduous tree, and the height of tree can reach 16 meters.Broussonetia papyrifera phloem fiber is also thin more than crudefiber crop, and intensity is high, and good toughness, as the extraordinary long fibered raw material of China, mainly for the production of the special paper of various top grades.From Cai Lun, paper mulberry just becomes the excellent raw material of manufacturing good quality paper, and therefore ancients claim that paper is " Mr. paper mulberry " or " paper mulberry ".Along with the development in epoch, paper mulberry is progressively widely used in the various paper molds such as the paper of framing news, gift wrap paper, rice paper, even the very high seal paper money paper of quality requirement, its main raw material is also tapa fiber.
The positive seeds of paper mulberry, accommodative ability of environment is extremely strong, both drought-resistant barren, resistance to dry and cold warm again, on, crack of stone long-pending at acid soil, neutral soil, calcareous soil, mountain stoneledge and nitre wall and waterside, swale can well grow.Therefore the distribution of paper mulberry is very extensive, has distribution in North China, Central China, south China, southwest, the northwest each province of China, and especially southern area is very common.On the slope, north and south in the Qinling Mountains, the upstream area in the Yellow River, the Changjiang river, more than vertical distribution reaches height above sea level 1600m.
Just because of paper mulberry has concurrently best in quality and is easy to the feature of growing, it just becomes the raw-material first-selected seeds of paper-making industry.At present, China's paper-making industry has entered the new stage of high speed development, and Chinese papermaking whole industry output is with first of 18,1% sunlight amplification row Asia.On the one hand, national paper industry develops rapidly, and on the other hand, China is still maximum in the world paper trade net importer, and particularly the import of the fibrous raw material such as wood pulp and waste paper is huge.2002, the import volume of Chinese wood pulp leapt to the first in the world, accounted for 20.6% of the total net export amount in the whole world, was 1.4 times of second place Germany, 2.2 times of Japan.Paper products in 2004 have become China and have been only second to of oil and steel
Three commodity of using foreign currency greatly.The demand of China's high-quality paper pulp has suitable growth space.Paper-making industry is the domestic rare industry that can not meet domestic market demand of current China.It is predicted, by 2015, the consumption figure of China's paper and cardboard will be 8,000 ten thousand tons of left and right.If reach the standard of developed country's wood pulp usage ratio 90%, will reach hundred million tons of l to the required wood pulp of Chinese festiva in 2010.
The matter of utmost importance of paper industry is black liquor pollution, and the papermaking of paper mulberry stem skin is no exception, and paper mulberry stem skin papermaking at present generally adopts chemical pulp method.So-called chemical pulp is used chemical method exactly, removing as much as possible in plant fiber material is the intercellular layer lignin that fiber is bonded together, fibrocyte is separated or is easy to separate, become paper pulp, also must make the lignin content in fiber finer cell wall suitably reduce, require cellulose stripping minimum, hemicellulose has corresponding reservation simultaneously.Main chemical pulping method has two classes: a class is alkaline process (soda processes and sulfate process); Another kind of is sulphite process.Chemical pulp method all will be through the process of thermophilic digestion, so not only will discharge a large amount of black liquor but also energy consumption also high.Along with the superior trend of paper product and the upgrading of the industrial structure and the requirement of environmental protection, need to develop the pulping technique of new clean and effective.
The main component of paper mulberry stem skin is: cellulose, hemicellulose, pectin and lignin, and in table 1.Wherein content of cellulose is generally 40-50%, the content of hemicellulose, lignin, the hydrotrope and pectin approximately 50%.Its component and bast-fibre are closely similar, and table 1 has been listed the component contrast (unit is %) of paper mulberry stem skin, hemp, ramie, flax and poplar.Paper mulberry stem skin component feature is except content of cellulose height as can be seen from Table 1, pectin content is also higher, and content of lignin is much lower with respect to timber, therefore, we can use for reference jute fiber degumming, the thinking of textile fabric is prepared in bleaching, paper mulberry stem skin is first carried out to the quick-fried processing of vapour, remove most of pectin and hemicellulose wherein, lose through rinsing and bleaching lignin and other materials of removing wherein again and obtain paper pulp, in fact the quick-fried process of vapour separates the exocuticle of paper mulberry (casting skin) with internal layer bast simultaneously completely, can remove the black tissue of exocuticle through rinsing, reduce the negative effect of exocuticle black tissue to pulping process, and stem hide fiber is torn into loose structure, make the abundant infiltration of bleaching process chemicals, improve pulp brightness.
Steam blasting is to adopt the media such as air, water vapour to carry out explosion to plant.Because plant cell wall is made up of materials such as celluloses, be subject to the impact of pressure-air while expanding and break, simultaneously water vapour easily immerses in plant cell, makes composition softening, produces a series of chemical change, thereby has weakened interfibrous bonding.After steam blasting, cellulose fully exposes, and becomes the stereo structure tissue of short texture, softness.The quick-fried processing of vapour makes in paper mulberry stem hide fiber 80% pectin and hemicellulose degraded, lignin Partial digestion, the exocuticle of paper mulberry (casting skin) is separated completely with internal layer bast simultaneously, can remove the black tissue of exocuticle through rinsing, reduce the negative effect of exocuticle black tissue to pulping process, and stem hide fiber torn into loose structure by the quick-fried process of vapour, make the abundant infiltration of bleaching process chemicals, improve pulp brightness.This method has not only reduced the industrialization cost of paper mulberry stem skin papermaking, avoided chemical pulping to cause environmental pollution, and the method can improve yield and the quality of paper pulp.
Summary of the invention
The object of the invention is, for paper mulberry stem skin chemical pulping process contaminated environment and the high shortcoming of energy consumption, provides a kind of clean pulping process of paper mulberry stem bark through steam-exploding degumming.
The clean method of preparing high-quality paper pulp of paper mulberry stem bark through steam-exploding degumming provided by the invention, comprises the steps:
(1) steam blasting: the paper mulberry stem skin of collecting is tieed up and pressed 2～5min to carry out steam blasting processing under 0.7～1.3MPa pressure;
(2) the quick-fried stem skin of vapour rinsing: the quick-fried rear raw material of vapour is carried out to rinsing with 5-10 water doubly, remove pectin, hemicellulose, lignin and the paper mulberry exodermis black color component of degraded;
(3) the quick-fried stem skin of vapour bleaching: adopt two sections of bleaching technologies, the consisting of of first stage bleaching liquid: 1%Na
2si0
3. 2% H
20
22% NaOH, the consisting of of second segment bleaching liquid: 1% Na
2si0
31% H
20
21% NaOH. all, at 50-70 DEG C, respectively floats 1-3 h, solid-to-liquid ratio: 1/10-1/20;
(4) aftertreatment technology: after bleaching, paper mulberry stem latex material, according to the demand of different paper, further can be prepared rice paper and print the expensive goods such as paper money paper after making beating or defibrination.
The core of this patent is the cleaning pulping technology of paper mulberry stem skin, by pollution-free steam blasting technology, paper mulberry stem skin is carried out to degumming process, after rinsing, bleaching, make again the paper pulp of high-quality, this technology has not only reduced the industrialization cost of paper mulberry stem skin papermaking, avoid chemical pulping to cause environmental pollution, and can improve yield and the quality of paper pulp, for the higher value application of paper mulberry stem skin provides new way, economic outlook is wide.
Detailed description of the invention
Embodiment 1:
(1) stem skin rinsing: raw material is carried out to rinsing with 5-15 water doubly, remove pectin, hemicellulose, lignin and the paper mulberry exodermis black color component of degraded;
(2) stem skin bleaching: adopt two sections of bleaching technologies, the consisting of of first stage bleaching liquid: 1% Na
2si0
3, 2% H
20
22% NaOH, the consisting of of second segment bleaching liquid: 1% Na
2si0
31% H
20
21% NaOH, all, at 50-70 DEG C, respectively floats 1-3 h, solid-to-liquid ratio: 1/10-1/20;
Embodiment 2:
(1) stem skin rinsing: the quick-fried rear raw material of vapour is carried out to rinsing with the water of 8 times, remove pectin, hemicellulose, lignin and the paper mulberry exodermis black color component of degraded;
(2) stem skin bleaching: adopt two sections of bleaching technologies, the consisting of of first stage bleaching liquid: 1%Na
2si0
32% H
20
2. 2% NaOH, the consisting of of second segment bleaching liquid: 1% Na
2si0
3, 1% H
20
2, 1% NaOH, all, at 60 DEG C, respectively float 3h, solid-to-liquid ratio: 1/15: paper pulp yield is 44.1% of paper mulberry stem skin dry weight, slurry can be used for manufacturing rice paper and print the high-grade paper such as paper money paper.
Claims (3)
1. a method of preparing rice paper paper pulp, comprises the steps:
(1) stem skin rinsing: raw material is carried out to rinsing with 5-15 water doubly, remove pectin, hemicellulose, lignin and the paper mulberry exodermis black color component of degraded;
(2) stem skin bleaching: adopt two sections of bleaching technologies, the consisting of of first stage bleaching liquid: 1%Na
2si0
3, 2% H
20
22% NaOH, the consisting of of second segment bleaching liquid: 1% Na
2si0
31% H
20
21% NaOH, all, at 50-70 DEG C, respectively floats 1-3h, solid-to-liquid ratio: 1/10-1/20.
2. a kind of method of preparing rice paper paper pulp according to claim 1, is characterized in that: from rinsing liquid, abstraction function component comprises xylo-oligosaccharide, Flavonoid substances.
3. a kind of method of preparing rice paper paper pulp according to claim 1, is characterized in that: after bleaching, after making beating or defibrination, can prepare rice paper and print the expensive goods such as paper money paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210567739.1A CN103898779A (en) | 2012-12-24 | 2012-12-24 | Method for preparing Chinese art paper pulp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210567739.1A CN103898779A (en) | 2012-12-24 | 2012-12-24 | Method for preparing Chinese art paper pulp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103898779A true CN103898779A (en) | 2014-07-02 |
Family
ID=50990337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210567739.1A Pending CN103898779A (en) | 2012-12-24 | 2012-12-24 | Method for preparing Chinese art paper pulp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103898779A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532642A (en) * | 2014-11-05 | 2015-04-22 | 江苏顺远纺织科技有限公司 | Preparation method of straw fibers for spinning |
| CN116178576A (en) * | 2022-12-12 | 2023-05-30 | 国科绿海(天津)科技发展有限公司 | Separation treatment method for all-quality multi-product of golden bamboo grass |
-
2012
- 2012-12-24 CN CN201210567739.1A patent/CN103898779A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532642A (en) * | 2014-11-05 | 2015-04-22 | 江苏顺远纺织科技有限公司 | Preparation method of straw fibers for spinning |
| CN116178576A (en) * | 2022-12-12 | 2023-05-30 | 国科绿海(天津)科技发展有限公司 | Separation treatment method for all-quality multi-product of golden bamboo grass |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140702 |