CN100532705C - Method for producing paper pulp for papermaking - Google Patents
Method for producing paper pulp for papermaking Download PDFInfo
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- CN100532705C CN100532705C CNB2007101176576A CN200710117657A CN100532705C CN 100532705 C CN100532705 C CN 100532705C CN B2007101176576 A CNB2007101176576 A CN B2007101176576A CN 200710117657 A CN200710117657 A CN 200710117657A CN 100532705 C CN100532705 C CN 100532705C
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Abstract
The present invention is papermaking pulp making process, and belongs to the field of papermaking technology. The papermaking pulp making process includes the following steps: twisting the papermaking material into fiber thread; preparing digestion liquor through mixing activating agent, main digestion liquor and auxiliary digestion liquor; digesting the fiber thread in the digestion liquor; grinding; extruding while adding water to eliminate waste liquid; sieving to eliminate impurity and hard lump; and final bleaching through adding water and calcium hypochlorite. The process has high pulp yield, wide material source, reuse of the black liquor through filtering, less chemical material consumption and less pollution.
Description
Technical field
The present invention relates to a kind of manufacture method that is used for the paper pulp of papermaking, belong to pulp technology for making paper.
Background technology
Traditional paper technology all is that its principle is a peeling reaction with the impurity such as lignin in the highly basic extracting string, and promptly highly basic extracts the impurity such as lignin in the string, makes fiber saponification pulping, reaches the requirement of the paper product of manufacturing paper with pulp.But the highly basic that uses in the traditional handicraft has destroyed staple fibre, has therefore reduced the slurry yield of paper pulp, causes the severe contamination of environment again.This makes paper-making industry have serious problems, in the big ground of China in addition to anhydrously do not pollute, the non-staining stage in no river, directly injured existent environment of people.For this reason, country has closed ten hundreds of middle small paper mills, causes large quantities of workmans to be laid off, and livelihood is unassured.Enterprises in pulp and paper industry is in order to maintain existence, and the needization huge fund is carried out alkali and reclaimed, but costly, and paper cost is increased greatly.
Summary of the invention
The objective of the invention is to propose a kind of manufacture method that is used for the paper pulp of papermaking, situation at present paper industry existence to severe environmental pollution, be used for the paper pulp papermaking process of papermaking, replace highly basic with the organic active agent, make harmless, the alkali-free of paper-making process, pollution-free, and reduce the papermaking cost.
The manufacture method of the paper pulp that is used for papermaking that the present invention proposes may further comprise the steps:
(1) the paper grade (stock) raw material is twisted into filament, making the length of silk is 1～5 centimetre, and the diameter of silk is 0.1～0.2 centimetre;
(2) it is standby to prepare the auxilliary liquid of activating agent, boiling master liquid and boiling respectively:
Wherein the preparation method of activating agent is:
The percentage by weight of each component is:
Secondary octanol polyoxyethylene ether 6～12%
Oxidic polyethylene emulsion 6～12%
Ethanol 1～5%
Neopelex 1～5%
SODIUM PERCARBONATE 2～6%
Alkali protease 1～3%
Surplus is talcum powder
Preparation process is: above-mentioned raw materials is mixed in proportion, grind, making granularity is 100～200 orders;
Wherein the preparation method of boiling master liquid is:
The weight ratio of each component is:
1000 parts in water
8～12 parts in calcium hydroxide
0.1～1 part of anthraquinone
0.1～1 part of SODIUM PERCARBONATE
0.5～2 part of neopelex
0.5～2 part of anhydrous sodium sulfite
According to the above ratio each component is mixed, reacted 1.5～3 hours, standby;
Wherein the preparation method of the auxilliary liquid of boiling is:
The weight ratio of each component is:
1000 parts in water
1～4 part of alkali protease
1～3 part of SODIUM PERCARBONATE;
Above-mentioned activating agent is put into the mixed liquor of above-mentioned boiling master liquid and the auxilliary liquid of boiling, obtain cooking liquor, additional proportion is: it is 1～1.5% that activating agent accounts for filametntary percentage by weight, it is 180～220% that boiling master liquid accounts for filametntary percentage by weight, and it is 90～115% that the auxilliary liquid of boiling accounts for filametntary percentage by weight;
(3) filament with step (1) adds boiling in the cooking liquor, and additional proportion is: filament: cooking liquor=1:2.8～3.1, boiling temperature are 160 ℃～195 ℃, and digestion time is 2～7 hours, and cooking pressure is 7～9 kilograms;
(4) paper pulp after the above-mentioned boiling is ground, the hardness that makes paper pulp is 12～18;
(5) paper pulp after the above-mentioned grinding is pushed, squeeze and remove waste liquid, making pulp density is 30～40%, adds clear water again, extruding once more, and the addition of clear water is: raw fiber silk: water=1:3, extruding back pulp density is 30～40% once more;
(6) paper pulp after the above-mentioned cleaning is screened, remove impurity and lump;
(7) add entry and calcium hypochlorite in the paper pulp after above-mentioned screening, to association with pulp bleaching, addition is: paper pulp: water: calcium hypochlorite=1:10:1.8～2.2, bleached 2 hours.
The manufacture method of the paper pulp that is used for papermaking that the present invention proposes has the following advantages:
1, in the pulping process of the present invention, do not use alkali, need not massive laundering, the one, avoid sewage emissions, thereby saved water greatly.
2, use the organic active agent to replace highly basic in traditional pulping and papermaking processes in the inventive method, this makes the present invention different with traditional handicraft on the mechanism that paper pulp is made.Protease in the activating agent that the present invention uses; it is alkaline compound; can make the straw molten wax degreasing in surface; secondary octanol polyoxyethylene ether wherein is a kind of nonionic penetrant, and it can make other active ingredient rapid permeability in the activating agent in the plant chain; moment is opened the connection between the string; make stripping fast such as lignin in the string, starch, tannin, sugar, ash content, pectin, and do not destroy fiber, general protection fiber and half fiber.Therefore utilize the inventive method to make paper pulp, its slurry yield is compared with strong alkali method, can improve 20%.
3, utilize the inventive method to make paper pulp, its raw material sources are extensive, can use straw, wheat, Chinese alpine rush of draft etc., the cornstalk of standing grain basis, bamboo, reed, cotton stalk, bagasse etc., and woody brush wood, leaf wood and needlebush etc., as long as have all available the inventive method slurrying of cellulosic straw.
4, in the inventive method, the black liquor through filtering that digestion process produces can be used repeatedly, has saved the great number equipment that alkali reclaims in traditional paper technology fully and has dropped into and great number operating cost, for the thorough pollution treatment of paper-making industry provides the reliable technique means.Impurity that obtains in the screening of manufacture process and lump can be mixed together with the extruding waste liquid, make lignin carbon, be that a kind of smoke-free and tasteless is pollution-free, the high-grade fuel of high heating value, not only reduced the paper pulp manufacturing cost, and make whole pulp making process become zero-emission.
5, the industrial chemicals consumption that uses in the inventive method is less than traditional paper technology greatly, and paper pulp is easily bleached, and water consumption is few, and contained pollutant is few, and middle section water is easily administered.
The specific embodiment
The various industrial chemicals that use in the embodiment of the invention, its source is as follows:
Secondary octanol polyoxyethylene ether is produced by Shangyu, the Zhejiang city second chemical reagent factory.Oxidic polyethylene emulsion is by Nanjing, Jiangsu Province second Organic Chemical Plant.Neopelex is produced by Red Star chemical plant, Zibo, Shandong Province.SODIUM PERCARBONATE is produced by Red Star chemical plant, Tianjin.Alkali protease is produced by Red Star chemical plant, Tianjin.
Embodiment 1
(1) with 4 tons of paper grade (stock) raw material wheat straws, be twisted into silk, making the length of silk is 1～5 centimetre, and the diameter of silk is 0.1～0.2 centimetre.
(2) prepare 40 kilograms of activating agents respectively: wherein: 2.4 kilograms of secondary octanol polyoxyethylene ether, oxidic polyethylene emulsion: 2.4 kilograms, ethanol: 0.4 kilogram, neopelex: 0.4 kilogram, SODIUM PERCARBONATE: 0.8 kilogram, alkali protease: 0.4 kilogram, talcum powder: 33.2 kilograms, above-mentioned raw materials is mixed, grind, making granularity is 200 orders;
8073.6 kilograms of preparation boiling master liquid: wherein, water: 8000 kilograms, calcium hydroxide: 64 kilograms, anthraquinone: 0.8 kilogram, SODIUM PERCARBONATE: 0.8 kilogram, neopelex: 4 kilograms, anhydrous sodium sulfite: 4 kilograms, above-mentioned raw materials is mixed, reacted 2 hours, standby;
4008 kilograms of the auxilliary liquid of preparation boiling, wherein, water: 4000 kilograms, alkali protease: 4 kilograms, SODIUM PERCARBONATE: 4 kilograms, above-mentioned raw materials is mixed, reacted 2 hours, standby;
At last activating agent is put into the mixed liquor of the auxilliary liquid of boiling master liquid and boiling, obtained cooking liquor.
(3) 4 tons of filaments add boiling in the cooking liquor, and boiling temperature is 160 ℃, and digestion time is 2 hours, and cooking pressure is 7 kilograms;
(4) paper pulp after the above-mentioned boiling is ground, the hardness that makes paper pulp is 15;
(5) paper pulp after the above-mentioned grinding is pushed, squeeze and remove waste liquid, making pulp density is 30%, adds 1 ton in clear water again, extruding once more, and making pulp density is 30%;
(6) paper pulp after the above-mentioned cleaning is screened, remove impurity and lump;
(7) after above-mentioned grinding, extruding, cleaning, because of having removed impurity such as lignin wherein, also surplus 2 tons of paper pulp add 20 tons of water and 4 tons of calcium hypochlorites therein, and to association with pulp bleaching 2 hours, obtaining pulp brightness was 75 degree.
Embodiment 2
(1) with 4 tons in paper grade (stock) raw material reed, be twisted into silk, making the length of silk is 1～5 centimetre, and the diameter of silk is 0.1～0.2 centimetre.
(2) prepare 40 kilograms of activating agents respectively: wherein: 3.6 kilograms of secondary octanol polyoxyethylene ether, oxidic polyethylene emulsion: 3.6 kilograms, ethanol: 1.24 kilograms, neopelex: 1.2 kilograms, SODIUM PERCARBONATE: 1.6 kilograms, alkali protease: 0.8 kilogram, talcum powder: 28 kilograms, above-mentioned raw materials is mixed, grind, making granularity is 150 orders;
8108.8 kilograms of preparation boiling master liquid: wherein, water: 8000 kilograms, calcium hydroxide: 80 kilograms, anthraquinone: 6.4 kilograms, SODIUM PERCARBONATE: 6.4 kilograms, neopelex: 8 kilograms, anhydrous sodium sulfite: 8 kilograms, above-mentioned raw materials is mixed, reacted 2 hours, standby;
4014 kilograms of the auxilliary liquid of preparation boiling, wherein, water: 4000 kilograms, alkali protease: 8 kilograms, SODIUM PERCARBONATE: 6 kilograms, above-mentioned raw materials is mixed, reacted 2 hours, standby;
At last activating agent is put into the mixed liquor of the auxilliary liquid of boiling master liquid and boiling, obtained cooking liquor.
(3) 4 tons of filaments add boiling in the cooking liquor, and boiling temperature is 190 ℃, and digestion time is 3 hours, and cooking pressure is 8 kilograms;
(4) paper pulp after the above-mentioned boiling is ground, the hardness that makes paper pulp is 15;
(5) paper pulp after the above-mentioned grinding is pushed, squeeze and remove waste liquid, making pulp density is 30%, adds 1 ton in clear water again, extruding once more, and making pulp density is 30%;
(6) paper pulp after the above-mentioned cleaning is screened, remove impurity and lump;
(7) after above-mentioned grinding, extruding, cleaning, because of having removed impurity such as lignin wherein, also surplus 2.5 tons of paper pulp added 25 tons of water and 5.5 tons of calcium hypochlorites therein, to association with pulp bleaching 2 hours.
Embodiment 3
(1) with 4 tons of paper grade (stock) raw material quick growth poplar woods, be twisted into silk, making the length of silk is 1～5 centimetre, and the diameter of silk is 0.1～0.2 centimetre.
(2) prepare 40 kilograms of activating agents respectively: wherein: 4.8 kilograms of secondary octanol polyoxyethylene ether, oxidic polyethylene emulsion: 4.8 kilograms, ethanol: 2 kilograms, neopelex: 2 kilograms, SODIUM PERCARBONATE: 3 kilograms, alkali protease: 1.2 kilograms, talcum powder: 18.2 kilograms, above-mentioned raw materials is mixed, grind, making granularity is 150 orders;
8144 kilograms of preparation boiling master liquid: wherein, water: 8000 kilograms, calcium hydroxide: 96 kilograms, anthraquinone: 8 kilograms, SODIUM PERCARBONATE: 8 kilograms, neopelex: 16 kilograms, anhydrous sodium sulfite: 16 kilograms, above-mentioned raw materials is mixed, reacted 2 hours, standby;
4028 kilograms of the auxilliary liquid of preparation boiling, wherein, water: 4000 kilograms, alkali protease: 16 kilograms, SODIUM PERCARBONATE: 12 kilograms, above-mentioned raw materials is mixed, reacted 2 hours, standby;
At last activating agent is put into the mixed liquor of the auxilliary liquid of boiling master liquid and boiling, obtained cooking liquor.
(3) 4 tons of filaments add boiling in the cooking liquor, and boiling temperature is 195 ℃, and digestion time is 5 hours, and cooking pressure is 8 kilograms;
(4) paper pulp after the above-mentioned boiling is ground, the hardness that makes paper pulp is 15;
(5) paper pulp after the above-mentioned grinding is pushed, squeeze and remove waste liquid, making pulp density is 30%, adds 2 tons in clear water again, extruding once more, and making pulp density is 30%;
(6) paper pulp after the above-mentioned cleaning is screened, remove impurity and lump;
(7) after above-mentioned grinding, extruding, cleaning, because of having removed impurity such as lignin wherein, also surplus 3 tons of paper pulp added 30 tons of water and 6 tons of calcium hypochlorites therein, to association with pulp bleaching 2 hours.
Claims (1)
1, a kind of manufacture method that is used for the paper pulp of papermaking is characterized in that this method may further comprise the steps:
(1) the paper grade (stock) raw material is twisted into filament, making the length of silk is 1～5 centimetre, and the diameter of silk is 0.1～0.2 centimetre;
(2) it is standby to prepare the auxilliary liquid of activating agent, boiling master liquid and boiling respectively:
Wherein the preparation method of activating agent is:
The percentage by weight of each component is:
Secondary octanol polyoxyethylene ether 6～12%
Oxidic polyethylene emulsion 6～12%
Ethanol 1～5%
Neopelex 1～5%
SODIUM PERCARBONATE 2～6%
Alkali protease 1～3%
Surplus is talcum powder
Preparation process is: above-mentioned raw materials is mixed in proportion, grind, making granularity is 100～200 orders;
Wherein the preparation method of boiling master liquid is:
The weight ratio of each component is:
1000 parts in water
8～12 parts in calcium hydroxide
0.1～1 part of anthraquinone
0.1～1 part of SODIUM PERCARBONATE
0.5～2 part of neopelex
0.5～2 part of anhydrous sodium sulfite
According to the above ratio each component is mixed, reacted 1.5～3 hours, standby;
Wherein the preparation method of the auxilliary liquid of boiling is:
The weight ratio of each component is:
1000 parts in water
1～4 part of alkali protease
1～3 part of SODIUM PERCARBONATE;
Above-mentioned activating agent is put into the mixed liquor of above-mentioned boiling master liquid and the auxilliary liquid of boiling, obtain cooking liquor, additional proportion is: it is 1～1.5% that activating agent accounts for filametntary percentage by weight, it is 180～220% that boiling master liquid accounts for filametntary percentage by weight, and it is 90～115% that the auxilliary liquid of boiling accounts for filametntary percentage by weight;
(3) filament with step (1) adds boiling in the cooking liquor, and additional proportion is: filament: cooking liquor=1:2.8～3.1, boiling temperature are 160 ℃～195 ℃, and digestion time is 2～7 hours, and cooking pressure is 7～9 kilograms, obtains paper pulp;
(4) paper pulp after the above-mentioned boiling is ground, the hardness that makes paper pulp is 12～18;
(5) paper pulp after the above-mentioned grinding is pushed, squeeze and remove waste liquid, the concentration that makes paper pulp is 30～40%, adds clear water again, extruding once more, and the addition of clear water is: raw fiber silk: water=1:3, extruding back pulp density is 30～40% once more;
(6) paper pulp after the above-mentioned cleaning is screened, remove impurity and lump;
(7) add entry and calcium hypochlorite in the paper pulp after above-mentioned screening, to association with pulp bleaching, addition is: paper pulp: water: calcium hypochlorite=1:10:1.8～2.2, bleached 2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101176576A CN100532705C (en) | 2007-06-21 | 2007-06-21 | Method for producing paper pulp for papermaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101176576A CN100532705C (en) | 2007-06-21 | 2007-06-21 | Method for producing paper pulp for papermaking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101067286A CN101067286A (en) | 2007-11-07 |
| CN100532705C true CN100532705C (en) | 2009-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007101176576A Expired - Fee Related CN100532705C (en) | 2007-06-21 | 2007-06-21 | Method for producing paper pulp for papermaking |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102154871B (en) * | 2011-02-25 | 2013-06-26 | 李政 | Method for pulping without producing strongly alkaline high-pollution black liquor |
| GB2514840A (en) * | 2013-06-07 | 2014-12-10 | Imerys Minerals Ltd | Compositions for bleaching pulps and their use |
| CN104018391B (en) * | 2014-06-27 | 2017-03-01 | 福建省晋江优兰发纸业有限公司 | A kind of knitting paper for handicraft articles and preparation method thereof |
| CN109024042A (en) * | 2018-06-28 | 2018-12-18 | 广西浙缘农业科技有限公司 | A kind of method and waste liquid alkali collection processing with bagasse papermaking |
| CN110820399B (en) * | 2019-11-06 | 2021-10-26 | 泰安天兴木业科技有限公司 | Preparation method of high-whiteness chemi-mechanical pulp |
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| CN101067286A (en) | 2007-11-07 |
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Address after: 274000 No. 42, Camellia lane, Heze, Shandong, Zhongshan Road Patentee after: Xia Siquan Address before: 274000, Shandong province Heze traffic police detachment family hospital building No. 12, building 1-301 Patentee before: Xia Siquan |
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Effective date of registration: 20160926 Address after: 274000, No. 42, Camellia Road, Zhongshan East Road, Mudan District, Shandong, Heze Patentee after: Heze ideal paper Technology Co., Ltd. Address before: 274000 No. 42, Camellia lane, Heze, Shandong, Zhongshan Road Patentee before: Xia Siquan |
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Granted publication date: 20090826 Termination date: 20170621 |