CN103243597B - A kind of non-wood material free pulping method - Google Patents
A kind of non-wood material free pulping method Download PDFInfo
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- CN103243597B CN103243597B CN201210023537.0A CN201210023537A CN103243597B CN 103243597 B CN103243597 B CN 103243597B CN 201210023537 A CN201210023537 A CN 201210023537A CN 103243597 B CN103243597 B CN 103243597B
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Abstract
The invention provides a kind of non-wood material free pulping method, its major pharmaceutical agent is biology enzyme, basic salt, surfactant-1, surfactant-2, oxidant etc.Present invention also offers non-wood material pulping process, comprise the following steps: (1) pretreatment of raw material; (2) sub-wire is rubbed; (3) slurrying dipping; (4) slurrying is discongested; (5) defibrination; (6) strengthen bleaching, (7) screen, (8) waste water recycling; Wherein said step (1), step (3) use the pulp-making agent of described slurrying.Utilize pulp-making agent provided by the invention to carry out non-wood material slurrying, non-wood material is mainly cotton stalk, caragana microphylla, salix monogolica, bamboo, reed etc.Especially utilize pulping process provided by the invention, compared with traditional soda pulping process, when pulping index is the same, slurry yield improves greatly, and whiteness improves a lot, and pulp-making agent reusable edible, decreases chemicals consumption, decrease environmental pollution.
Description
Technical field
The invention belongs to pulping and paper-making field, be specially adapted to the 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 more outstanding.Because timber resources is limited, non-wood material cotton stalk, caragana microphylla, salix monogolica, bamboo, straw, reed etc. is made to become important paper making raw material.Traditional Wheat Straw Alkaline chemical pulping, comprises the boiling of High Temperature High Pressure caustic soda, black liquid extraction, washes, sieves, the step such as bleaching, and this technique needs to use a large amount of water, and is not easy to waste liquid circulation and utilizes, and result in serious problem of environmental pollution.The increasingly stringent of enhancing and the environmental regulation day by day of people's environmental consciousness, forces papermaker to study and uses 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 large, 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.There is provided one effectively can improve pulp brightness simultaneously, reduce water consumption, realize the non-wood material free pulping method that waste liquid circulation uses, comprise the following steps:
(1) pretreatment of raw material, the special agent used is basic salt and surfactant-1, described basic salt is polyphosphate sodium, described surfactant-1 is polyoxyethylene ether phosphoric acid ester, basic salt addition is the 0.5%-1% of raw material weight, surfactant-1 addition is the 0.2%-0.5% of raw material weight, and the pretreatment of raw material time is 30-40 minute, temperature control 60-80 DEG C;
(2) rub sub-wire, use the method for double helix exrusion to carry out sub-wire;
(3) slurrying dipping, the special agent of use is biology enzyme, surfactant-2, oxidant, and described biology enzyme is alkaline pectase, and described surfactant-2 is secondary sodium alkyl benzene sulfonate, and described oxidant is sodium nitrate; 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, oxidant addition is the 0.1%-0.2% of raw material weight, and the dip time of slurrying dipping is 60-90 minute, and temperature controls at 80-90 DEG C;
(4) discongest slurrying, use the method for asymmetric double helix exrusion to carry out discongesting slurrying;
(5) defibrination, use pulping machinery to carry out two sections of defibrinations, the concentration that paper pulp raw material enters first paragraph high-density paste mill is 25-30%; The concentration that paper pulp raw material enters second segment middle-density refiner is 8-12%;
(6) strengthen bleaching, be added to the hydrogen peroxide of the 3%-5% of raw material weight to the paper pulp after defibrination;
(7) screen, cross 0.15mm slotted screen, good slurry is for subsequent use;
(8) waste water recycling, uses ceramic membrane to carry out pulp-making agent recycle.
Utilize pulp-making agent provided by the invention to carry out non-wood material slurrying, especially utilize pulping process provided by the invention, effectively can improve pulp brightness, reduce water consumption, realize waste liquid circulation and use, decrease chemicals consumption, decrease environmental pollution.
Detailed description of the invention
The better embodiment of pulp-making agent provided by the invention is:
(1) special agent that pretreatment of raw material uses is basic salt and surfactant-1, and 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 slurrying dipping uses is biology enzyme, surfactant-2, oxidant, 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 addition is the 0.1%-0.2% of raw material weight.
Pulping process detailed description of the invention provided by the invention is as follows:
(1) pretreatment of raw material: adopt in hot water before non-wood material chemical-mechanical pulping and directly add pulp-making agent, to reach the effect of the softening non-wood material of infiltration, described pulp-making agent is preliminary treatment special agent, raw material and aqueous solution liquor ratio are 1: 6, temperature 60-80 DEG C, pretreatment time is 30-40min.
(2) sub-wire is rubbed: raw material enters double helix kneading machine after preliminary treatment dehydration, double helix kneading machine utilizes compression stress and shearing force to make raw fiberization and longitudinal (axis) somatoblast and producing without fragment, these power can produce enough heats with softening lignin, also create good condition for smooth defibre simultaneously.Because temperature is significantly less than lignin vitrifying branchpoint, thus fiber is separated at S1-S2 interlayer instead of at intercellular layer, but have fabulous execution to fiber primary wall (P layer) and outer layer of secondary wall (S1 layer).Spiral squeezes and grinds compression ratio about 1: 4, mass dryness fraction 30-40%, thus can a large amount of as sponge, uniform pickup liquid.Thus the effect of saving chemicals, Reaction time shorten, raising chemical treatment effect can be played.
(3) slurrying dipping: the special agent that the raw material after rubbing sub-wire adds the use of slurrying dipping floods non-wood material, liquor ratio 1: 6.Temperature controls between 80-90 degree, and dip time is 60-90 minute.
(4) discongest slurrying: enter asymmetric double screw kneading machine after the slurry after slurrying dipping, and resolve into single fiber or fibre debris under mechanical action, spiral squeezes and grinds compression ratio about 1: 5, mass dryness fraction 25-35%.
(5) defibrination: the concentration entering first paragraph high-density paste mill through discongesting pulping slurry is 25-30%, the concentration that paper pulp raw material enters second segment middle-density refiner is 8-12%.
(6) bleaching is strengthened: the paper pulp after defibrination is added to the hydrogen peroxide of the 3%-5% of raw material weight.
(7) screen: on screening machine, cross 0.15mm object slotted screen, good slurry disappears latent for subsequent use.
(8) waste water recycling: utilize ceramic membrane to filter pretreatment of raw material medicament and slurrying dipping liquid.Ceramic membrane have excellent high temperature resistant, solvent resistant, acid-proof alkaline and mechanical strength are high, have separations, concentrate, purifying and refining function, pulp-making agent, after membrane filtration, reaches reuse requirement completely.
Claims (1)
1. a non-wood material free pulping method, is characterized in that, comprises the following steps:
(1) pretreatment of raw material, the special agent used is basic salt and surfactant-1, described basic salt is polyphosphate sodium, described surfactant-1 is polyoxyethylene ether phosphate, basic salt addition is the 0.5%-1% of raw material weight, surfactant-1 addition is the 0.2%-0.5% of raw material weight, and the pretreatment of raw material time is 30-40 minute, temperature control 60-80 DEG C;
(2) rub sub-wire, use the method for double helix exrusion to carry out sub-wire;
(3) slurrying dipping, the special agent of use is biology enzyme, surfactant-2, oxidant, and described biology enzyme is alkaline pectase, and described surfactant-2 is secondary sodium alkyl benzene sulfonate, and described oxidant is sodium nitrate; 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, oxidant addition is the 0.1%-0.2% of raw material weight, and the dip time of slurrying dipping is 60-90 minute, and temperature controls at 80-90 DEG C;
(4) discongest slurrying, use the method for asymmetric double helix exrusion to discongest;
(5) defibrination, use pulping machinery to carry out two sections of defibrinations, the concentration that paper pulp raw material enters first paragraph high-density paste mill is 25-30%; The concentration that paper pulp raw material enters second segment middle-density refiner is 8-12%;
(6) strengthen bleaching, be added to the hydrogen peroxide of the 3%-5% of raw material weight to the paper pulp after defibrination;
(7) screen, cross 0.15mm slotted screen, good slurry is for subsequent use;
(8) waste water recycling, uses ceramic membrane to carry out pulp-making agent recycle.
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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 CN103243597A (en) | 2013-08-14 |
| CN103243597B true CN103243597B (en) | 2015-09-02 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155318B (en) * | 2015-02-12 | 2017-07-07 | 新疆国力源投资有限公司 | A kind of cotton stalk bleached chemi-mechanical pulp technique |
| CN104711881B (en) * | 2015-02-12 | 2017-01-25 | 新疆国力源投资有限公司 | Salix psammophila bleached chemi-mechanical pulp technology |
| 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 |
| 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 |
| CN108130772A (en) * | 2017-12-23 | 2018-06-08 | 林荣铨 | A kind of method that anti-bacteria paper is prepared using graphene/shell |
| 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 |
| CN109577059B (en) | 2018-12-29 | 2020-05-01 | 齐鲁工业大学 | Method for preparing biomechanical unbleached pulp by wheat 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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