CN103243597A - Non-wood raw material clean pulping method - Google Patents
Non-wood raw material clean pulping method Download PDFInfo
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- CN103243597A CN103243597A CN2012100235370A CN201210023537A CN103243597A CN 103243597 A CN103243597 A CN 103243597A CN 2012100235370 A CN2012100235370 A CN 2012100235370A CN 201210023537 A CN201210023537 A CN 201210023537A CN 103243597 A CN103243597 A CN 103243597A
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Abstract
The invention provides a non-wood raw material clean pulping method. Main agents used in the invention comprise a bio-enzyme, an alkaline salt, a surfactant-1, a surfactant-2, an oxidant and the like. The non-wood raw material pulping method comprises a step 1 of raw material pretreatment, a step 2 of kneading devillicate, a step 3 of pulping dipping, a step 4 of defibering pulping; a step 5 of pulp refining, a step 6 of enhanced bleaching, a step 7 of screening, and a step 8 of wastewater reuse, wherein the above pulping agents are used in the step 1 and the step 3. The pulping agents provided in the invention are utilized to pulp non-wood raw materials, and the non-wood raw materials mainly comprise cotton stalks, Caragana microphylla, Salix cheilophila, bamboos, reeds and the like. Compared with traditional alkaline pulping methods, the pulping method provided by the invention has the advantages of substantial yield increase, great whiteness increase, realization of recycling the pulping agents, reduction of the consumption of chemical agents, and reduction of the environmental pollution.
Description
Technical field
The invention belongs to the pulping and paper-making field, be specially adapted to non-wood material paper-making pulpings such as cotton stalk, caragana microphylla, salix monogolica, bamboo, straw, reed.
Background technology
Along with people constantly increase the demand of paper, cause restriction paper industry development there is lack of raw materials, energy deficiency and problem of environmental pollution be more outstanding.Because timber resources is limited, makes non-wood material cotton stalk, caragana microphylla, salix monogolica, bamboo, straw, reed etc. become important paper making raw material.Traditional wheat straw alkaline process chemical pulping comprises the boiling of High Temperature High Pressure caustic soda, black liquid extraction, washes, sieves, step such as bleaching that this arts demand uses a large amount of water, and is not easy to the waste liquid recycle, has caused the serious environmental pollution problem.The enhancing day by day of people's environmental consciousness and the increasingly stringent of environmental regulation force the papermaker must study and use new technology to reduce and to eliminate waste water to the pollution of environment.
Summary of the invention
In order to solve the problem that existing non-wood material slurrying slurry yield is low, water consumption is big, whiteness is low, waste liquid is difficult to recycle, the invention provides a kind of non-wood material free pulping method.Comprise a kind of pulp-making agent, its main pulp-making agent is biology enzyme, basic salt, surfactant-1, surfactant-2, oxidant etc.Provide a kind of simultaneously and can effectively improve pulp brightness, reduce water consumption, realize the non-wood material clean pulping process that waste liquid recycles.May further comprise the steps: (1) pretreatment of raw material; (2) rub the branch silk; (3) slurrying dipping; (4) discongest slurrying; (5) defibrination; (6) strengthen bleaching; (7) screening; (8) waste water recycling.Wherein said step (1), step (3) are used described pulp-making agent.
The special agent that described step (1) pretreatment of raw material is used is basic salt and surfactant, and the basic salt addition is the 0.5%-1% of raw material weight, and surfactant-1 addition is the 0.2%-0.5% of raw material weight.
The special agent that step (3) slurrying dipping uses is biology enzyme, surfactant-2, oxidant, the biology enzyme addition is the 0.2%-0.5% of raw material weight, surfactant-2 addition is the 0.5%-0.8% of raw material weight, and oxidant is that addition is the 0.1%-0.2% of raw material weight.
Step (2) is to use the method for double helix extruding to carry out the branch silk.
Step (4) is to use the method for asymmetric double helix extruding to discongest slurrying.
Step (5) uses the pulping machinery slurry to carry out two sections defibrinations, and the concentration that paper pulp raw material enters first section high molten fiberizer is 25-30%, and the concentration that paper pulp raw material enters molten fiberizer in second section is 8-12%.
The paper pulp of step (6) behind the defibrination is added to the hydrogen peroxide of the 3%-5% of raw material weight.
Step (7) is used the 0.15mm slotted screen.
Step (8) is to use ceramic membrane to carry out the pulp-making agent recycle.
Utilize pulp-making agent provided by the invention to carry out non-wood material slurrying, especially make and utilize pulping process provided by the invention, can effectively improve pulp brightness, reduce water consumption, realize that waste liquid recycles, reduced chemicals consumption, reduced environmental pollution.
The specific embodiment
The preferred embodiments of pulp-making agent provided by the invention is:
(1) special agent that uses of pretreatment of raw material is basic salt and surfactant, and the basic salt addition is the 0.5%-1% of raw material weight, and surfactant-1 addition is the 0.2%-0.5% of raw material weight; (2) special agent that uses of slurrying dipping is biology enzyme, surfactant-2, oxidant, the biology enzyme addition is the 0.2%-0.5% of raw material weight, surfactant-2 addition is the 0.5%-0.8% of raw material weight, and oxidant is that addition is the 0.1%-0.2% of raw material weight.
The pulping process specific embodiment provided by the invention is as follows:
(1) pretreatment of raw material: before the non-wood material chemical-mechanical pulping, adopt directly to add pulp-making agent in the hot water, to reach the effect of the softening non-wood material of infiltration, described pulp-making agent is the preliminary treatment special agent, raw material and aqueous solution liquor ratio are 1: 6, temperature 60-80 ℃, pretreatment time is 30-40min.
(2) rub the branch silk: raw material enters the double helix kneading machine after the preliminary treatment dehydration, the double helix kneading machine is to utilize compression stress and shearing force to make raw fiberization and vertical (axially) somatoblast and do not have the fragment generation, these power can produce enough heats with softening lignin, have also created good condition for smooth defibre simultaneously.Because temperature is significantly less than lignin vitrifying branchpoint, thereby fiber is to separate at the S1-S2 interlayer rather than at intercellular layer, but fiber primary wall (P layer) and outer layer of secondary wall (S1 layer) are had fabulous execution.Spiral squeezes and ground compression ratio about 1: 4, mass dryness fraction 30-40%, thus can a large amount of as sponge, evenly absorb soup.Thereby can play the effect of saving chemicals, shortening the reaction time, improving the chemical treatment effect.
(3) slurrying dipping: the special agent that the raw material after rubbing the branch silk adds the use of slurrying dipping floods liquor ratio 1: 6 to non-wood material.Temperature control is between the 80-90 degree, and dip time is 60-90 minute.
(4) discongest slurrying: enter asymmetric double spiral kneading machine behind the slurry behind the slurrying dipping, and resolve into single fiber or fibre debris under mechanism, spiral squeezes and ground compression ratio about 1: 5, mass dryness fraction 25-35%.
(5) defibrination: be 25-30% through discongesting the concentration that the pulping slurry enters first section high molten fiberizer, the concentration that paper pulp raw material enters molten fiberizer in second section is 8-12%.
(6) strengthen bleaching: the paper pulp behind the defibrination is added to the hydrogen peroxide of the 3%-5% of raw material weight.
(7) screening: cross 0.15mm purpose slotted screen at screening machine, good slurry disappears latent standby.
(8) waste water recycling: utilize ceramic membrane that pretreatment of raw material medicament and slurrying dipping soup are filtered.Ceramic membrane has excellent high temperature resistant, anti-solvent, acid-proof alkaline and mechanical strength height, has separations, concentrates, purifying and refining function, and pulp-making agent reaches the reuse requirement after passing through membrane filtration fully.
Claims (10)
1. the special agent that uses of pretreatment of raw material is basic salt and surfactant, and the basic salt addition is the 0.5%-1% of raw material weight, and surfactant-1 addition is the 0.2%-0.5% of raw material weight.
2. the special agent that uses of slurrying dipping is biology enzyme, surfactant-2, oxidant, the biology enzyme addition is the 0.2%-0.5% of raw material weight, surfactant-2 addition is the 0.5%-0.8% of raw material weight, and oxidant is that addition is the 0.1%-0.2% of raw material weight.
3. according to claim 1 and the described pulp-making agent of claim 2, it is characterized in that: described basic salt is polyphosphate sodium, described surfactant-1 is polyoxyethylene ether phosphoric acid fat, described surfactant-2 is secondary sodium alkyl benzene sulfonate, described oxidant is sodium nitrate, and described biology enzyme is alkaline pectase.
4. the non-wood material pulping process is characterized in that this technology may further comprise the steps: (1) pretreatment of raw material; (1) pretreatment of raw material; (2) rub the branch silk; (3) slurrying dipping; (4) discongest slurrying; (5) high consistency refining; (6) strengthen bleaching; (7) screening, (8) waste water recycling, the pulp-making agent that wherein said step (1) right to use requires 1 described slurrying to use, the pulp-making agent that step (3) right to use requires 2 described slurrying to use.
5. non-wood material pulping process according to claim 4, it is characterized in that: described step (1) the pretreatment of raw material time is 30-40 minute, 60-80 ℃ of temperature control, the dip time of step (3) slurrying dipping is 60-90 hour, temperature is controlled at 80-90 ℃.
6. non-wood material pulping process according to claim 4 is characterized in that: described step (2) is to use the method for double helix extruding to carry out the branch silk; Step (4) is to use the method for asymmetric double helix extruding to discongest.
7. non-wood material pulping process according to claim 4, it is characterized in that: step (8) is to use ceramic membrane to carry out the pulp-making agent recycle.
8. non-wood material pulping process according to claim 4 is characterized in that: described step (5) uses the pulping machinery slurry to carry out two sections defibrinations, and the concentration that paper pulp raw material enters first section high molten fiberizer is 25-30%; The concentration that paper pulp raw material enters molten fiberizer in second section is 8-12%.
9. non-wood material pulping process according to claim 4 is characterized in that: the paper pulp of described step (6) behind the defibrination is added to the hydrogen peroxide of the 3%-5% of raw material weight.
10. non-wood material pulping process according to claim 4 is characterized in that: described step (7) is crossed the 0.15mm slotted screen, very starches standby.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210023537.0A CN103243597B (en) | 2012-02-03 | 2012-02-03 | A kind of non-wood material free pulping method |
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| CN201210023537.0A CN103243597B (en) | 2012-02-03 | 2012-02-03 | A kind of non-wood material free pulping method |
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| CN103243597A true CN103243597A (en) | 2013-08-14 |
| CN103243597B CN103243597B (en) | 2015-09-02 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104711881A (en) * | 2015-02-12 | 2015-06-17 | 新疆国力源环保科技有限公司 | Salix psammophila bleached chemi-mechanical pulp technology |
| CN105155318A (en) * | 2015-02-12 | 2015-12-16 | 新疆国力源环保科技有限公司 | Cotton stalk bleached chemi-mechanical pulp process |
| CN105625074A (en) * | 2016-02-24 | 2016-06-01 | 张民贵 | Process for preparing pulp from hemp stems |
| CN104695260B (en) * | 2015-02-15 | 2016-06-15 | 李风志 | A kind of dissociation modified plant fibers clean pulping process |
| CN105780568A (en) * | 2016-04-23 | 2016-07-20 | 李树泉 | Pulp making technology through performing biological enzyme softening lignin removal twice combined with mechanical method |
| CN107287972A (en) * | 2017-07-03 | 2017-10-24 | 晟颐天祥天然纤维科技有限公司 | A kind of preparation method for cleaning reed pulp |
| CN108130772A (en) * | 2017-12-23 | 2018-06-08 | 林荣铨 | A kind of method that anti-bacteria paper is prepared using graphene/shell |
| CN109577072A (en) * | 2018-12-29 | 2019-04-05 | 齐鲁工业大学 | A kind of method that wheat straw waste prepares bio-mechanical master grind |
| CN110965382A (en) * | 2019-12-11 | 2020-04-07 | 江西吉润花炮新材料科技有限公司 | Biological bamboo cellulose extraction method |
| WO2020133857A1 (en) * | 2018-12-29 | 2020-07-02 | 齐鲁工业大学 | Method for preparing biomechanical unbleached pulp from grass straw |
| CN111424448A (en) * | 2020-03-30 | 2020-07-17 | 长沙瑞福尼新材料科技有限公司 | Preparation process of leaf biomechanical pulp |
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| CN101100819A (en) * | 2007-07-19 | 2008-01-09 | 李文海 | Straw and grass activating agent pulping method |
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- 2012-02-03 CN CN201210023537.0A patent/CN103243597B/en not_active Expired - Fee Related
Patent Citations (3)
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| CN101100819A (en) * | 2007-07-19 | 2008-01-09 | 李文海 | Straw and grass activating agent pulping method |
| CN101302724A (en) * | 2008-06-23 | 2008-11-12 | 王新军 | Medicament agent for environment friendly pulping and environment friendly pulping process |
| CN102268825A (en) * | 2010-06-03 | 2011-12-07 | 中国制浆造纸研究院 | Reinforced pre-soaking method of chemi-thermo-mechanical pulp |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104711881A (en) * | 2015-02-12 | 2015-06-17 | 新疆国力源环保科技有限公司 | Salix psammophila bleached chemi-mechanical pulp technology |
| CN105155318A (en) * | 2015-02-12 | 2015-12-16 | 新疆国力源环保科技有限公司 | Cotton stalk bleached chemi-mechanical pulp process |
| CN104695260B (en) * | 2015-02-15 | 2016-06-15 | 李风志 | A kind of dissociation modified plant fibers clean pulping process |
| CN105625074A (en) * | 2016-02-24 | 2016-06-01 | 张民贵 | Process for preparing pulp from hemp stems |
| CN105780568A (en) * | 2016-04-23 | 2016-07-20 | 李树泉 | Pulp making technology through performing biological enzyme softening lignin removal twice combined with mechanical method |
| CN105780568B (en) * | 2016-04-23 | 2017-07-07 | 上海锴晨实业有限公司 | Biological enzyme bating delignification combines mechanical legal system sizing process twice |
| CN107287972B (en) * | 2017-07-03 | 2018-11-23 | 晟颐天祥天然纤维科技有限公司 | A kind of preparation method cleaning reed pulp |
| CN107287972A (en) * | 2017-07-03 | 2017-10-24 | 晟颐天祥天然纤维科技有限公司 | A kind of preparation method for cleaning reed pulp |
| CN108130772A (en) * | 2017-12-23 | 2018-06-08 | 林荣铨 | A kind of method that anti-bacteria paper is prepared using graphene/shell |
| CN109577072A (en) * | 2018-12-29 | 2019-04-05 | 齐鲁工业大学 | A kind of method that wheat straw waste prepares bio-mechanical master grind |
| CN109577072B (en) * | 2018-12-29 | 2019-12-06 | 齐鲁工业大学 | Method for preparing bio-mechanical raw color paste from wheat straws |
| WO2020133856A1 (en) * | 2018-12-29 | 2020-07-02 | 齐鲁工业大学 | Method for preparing biomechanical primary color pulp from wheat straw |
| WO2020133857A1 (en) * | 2018-12-29 | 2020-07-02 | 齐鲁工业大学 | Method for preparing biomechanical unbleached pulp from grass straw |
| US11566376B2 (en) | 2018-12-29 | 2023-01-31 | Qilu University Of Technology | Method for preparing unbleached biomechanical pulp from straw |
| US11624154B2 (en) | 2018-12-29 | 2023-04-11 | Qilu University Of Technology | Method for preparing unbleached biomechanical pulp from straw |
| CN110965382A (en) * | 2019-12-11 | 2020-04-07 | 江西吉润花炮新材料科技有限公司 | Biological bamboo cellulose extraction method |
| CN111424448A (en) * | 2020-03-30 | 2020-07-17 | 长沙瑞福尼新材料科技有限公司 | Preparation process of leaf biomechanical pulp |
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| CN103243597B (en) | 2015-09-02 |
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