CN105463892A - Environment-friendly pulping technology - Google Patents
Environment-friendly pulping technology Download PDFInfo
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- CN105463892A CN105463892A CN201410463453.8A CN201410463453A CN105463892A CN 105463892 A CN105463892 A CN 105463892A CN 201410463453 A CN201410463453 A CN 201410463453A CN 105463892 A CN105463892 A CN 105463892A
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Abstract
The invention belongs to the technical field of improved technology for a pulping technology and in particular relates to an environment-friendly pulping technology. The environment-friendly pulping technology is characterized by comprising the following steps of (1) cutting out and dedusting for pulping raw material, (2) adding water and medicine to mix, (3) grinding for the first time, (4) conducting heat-preservation bleaching for one time, (5) shoving and washing, (5) adding medicine for the second time, (7) conducting the heat-preservation bleaching for the second time, (8) shoving, (9) washing and (10) recovering non-fiber material to produce organic fertilizer. Pulping time can be reduced and non water is discharged; no smell is caused; the pulping technology is high efficient and energy-saving; low equipment investment is required; high white pulp yield and whiteness degree can be achieved; low cost is demanded; and yellowing of the paper pulp can be avoided, so the pulp manufactured by the pulping technology is better than full-chemical pulp.
Description
(1) technical field
The invention belongs to a kind of pulping process improving technique technical field, particularly a kind of environment friendly pulping process.
(2) background technology
China has become wood pulp the biggest in the world, waste paper importation state, and waste paper importation has accounted for 61% of global waste paper net export total amount, the import of wood pulp and waste paper, obtains colored foreign exchange more than 120 hundred million dollars.According to customs statistics in 2008, China's imported waste paper 2420.6 ten thousand tons, pulp inlet 952.1 ten thousand tons, amounted to 3372.7 ten thousand tons.Nearly 3,000 ten thousand tons of domestic purchase waste paper.Within 2008, the whole nation produces paper and cardboard actual production namely more than 6,800 ten thousand tons, and domestic self-produced paper pulp more than 400 ten thousand tons, this self-produced paper pulp of more than 400 ten thousand tons, 80% is from yellow plate paper factory, and the production capacity of domestic blank sheet of paper slurry exists in name only.
The fiber that domestic large-scale papermaking enterprise is used, mainly derives from external wood pulp and waste paper, and the waste paper of domestic purchase substantially split by some middle and small scale paper mills, the in no way outlet if papermaking enterprise is persevered like this.
Utilization originally a kind of vicious circle of waste paper, paper of poor quality, slurrying cost is high, pollutes heavy, and water treatment is costly and complex process; Also the toilet paper of the health, particularly paper for daily use of paper far from.Waste paper is transmitted virus also, really none profit of hundred evils.Healthy in order to people, in the near future, most low-quality waste paper can only be burnt as bioelectrogenesis, saves power generation energy resource.
China is populous, vast in territory, more than 700,000,000 ton, the non-fiber tangerine bar such as wheat straw, cotton stalk, straw, bamboo, reed, beans bar of annual generation, because their Land use systems is not developed preferably, be typically used as fuel or have ignored its most original fiber function as the Fertilizer application in ground.
(3) summary of the invention
The present invention in order to make up the deficiencies in the prior art, provide energy-saving and cost-reducing, without gas, tasteless, free of contamination environment friendly pulping process.
The present invention is achieved through the following technical solutions:
A kind of environment friendly pulping process, is characterized in that: comprise the steps:
(1) pulping raw material cuts off dedusting;
(2) add water, dosing spice;
(3) defibrinations;
(4) once bleaching is incubated;
(5) shove washing;
(6) secondary dosing;
(7) secondary insulation bleaching;
(8) shove;
(9) pulp washing;
(10) non-fiber remanufacture fertilizer.
Environment friendly pulping process of the present invention, comprises following concrete technology step:
(1) pulping raw material cuts off dedusting: section pulping raw material being cut into 1-5 centimetre as pulping raw material and by pulping raw material with impurity and soil dispose, the material after dedusting is stacked;
(2) add water, dosing spice: in the pulping raw material after dedusting, add water and H2O2 and NaOH as medicine, in spiral, carry out even spice;
(3) defibrinations: the pulping raw material spiral mixed is sent into fiberizer, raw material is worn into crude fibre;
(4) once bleaching is incubated: the crude fibre spiral of milled is sent into bleaching container and carries out insulation bleaching;
(5) shove washing: the crude fibre after bleaching is carried out shove washing, fiber is separated with non-fibrous material, the water after squeezing flows into sedimentation basin;
(6) secondary dosing: the slurry that shove washs is added H2O2, NaOH and water, and make slurry become fine fibre by defibrination;
(7) secondary insulation bleaching: the fine fibre of milled is sent into bleaching container and carries out insulation bleaching;
(8) shove: squeeze the paper pulp after bleaching, shove water gets back to press master above as shove washings;
(9) pulp washing: washing starches raw material, the reuse after water treatment of the water after washing in vain;
(10) non-fibrous material remanufacture fertilizer: the material of the flocculation after the non-fiber thick substances material stacked after dedusting above, sedimentation basin precipitated, water treatment all reclaims, carries out neutralizing, fermenting and producing fertilizer.
In step of the present invention (2), the water added during spice is the recycle-water of sedimentation basin, and temperature is 40 DEG C ~ 60 DEG C, adds water, the weight proportion of medicine is, pulping raw material: water: H2O2: NaOH=100: 300 ~ 800: 0.1 ~ 4: 0.5 ~ 7.
During a defibrination of the present invention, fiberizer used is high-density paste mill or double-screw pulp-milling or devillicate machine.
Of the present invention to be once incubated the container bleached with secondary be all three-dimensional tower or horizontal tank, and three-dimensional tower bottom is installed in discharging spiral or tank and installed spiral; The temperature being once incubated bleaching is 50 DEG C ~ 70 DEG C, temperature retention time 10 ~ 100 minutes, and the temperature of secondary insulation bleaching is 60 DEG C ~ 80 DEG C, temperature retention time 30 ~ 120 minutes.
In step of the present invention (6), the fiberizer that during secondary dosing, defibrination is used is high-density paste mill or middle-density refiner, also the direct dosing of defibrination can not carry out secondary insulation bleaching; Adding the weight proportion be used as medicine to slurry is, slurry: water: H2O2: NaOH=100: 100 ~ 1000: 0.5 ~ 10: 0.1 ~ 4.
Pulping raw material of the present invention is grass class or broad-leaved class.
This technical matters produces in practice, has accomplished that (1) makes slurrying not pollute again completely; (2) pulping process is simplified; (3) make pulping process cost minimum; (4) make pulp quality best; (5) all can reclaim non-fibrous material and produce fertilizer, thoroughly solve the secondary pollution of slurrying.
China is populous, vast in territory, more than 700,000,000 ton, the non-fiber tangerine bar such as wheat straw, cotton stalk, straw, bamboo, reed, beans bar of annual generation, utilize the raw material papermaking of 1/3rd, China just can produce the paper of more than 100,000,000 ton, world's papermaking powerful country will be become, the paper cost produced is low, and quality is good, inexpensive, just have the paper exportation abroad of several ten million tons, capture overseas market.
The paper industry industry that originally a degree of association is very strong, paper industry powerful, represent a national economy powerful, it can pull steel and iron industry, equipment manufacture industry, chemical industry, the industries such as logistics, and millions of people can be made to obtain employment, several ten million common people are benefited, paper industry is allowed to come our country rich and powerful, our common people rich.
The present invention be a kind ofly non-evaporatingly to boil, bleach, a kind of pulping process that defibrination synchronously carries out, save mixing time, the not draining of slurrying use water, tasteless without gas, energy-efficient, equipment investment is low, white pulp yield degree, and whiteness is high, cost is low, and paper pulp is brightness reversion not, is superior to full chemical pulp.
(4) detailed description of the invention
Embodiment 1: the pulping process for straw:
(1) chaffcutter dedusting: exactly straw is cut into 2-5 centimetre long, effective for impurity etc. dedusting reach straw clean for the purpose of, the material of dedusting is stacked;
(2) straw clean for dedusting is sent to spice spiral, add slurrying recycle-water and hydrogen peroxide and NaOH that temperature is the sedimentation basin of 50 DEG C, adopt following weight proportion: straw: water: hydrogen peroxide: NaOH=100: 300: 0.5: 1, by the auger reaction in tank, make straw in spice, play certain softening;
(3) softening straw, send into high-density paste mill by spice spiral, straw at this moment becomes crude fibre;
(4) insulation bleaching storehouse sent into by the crude fibre after mill, crude fibre reacts 90 minutes in storehouse, temperature 50 degree, the course of reaction of crude fibre in storehouse is the process of the drop reaction that make use of bleaching storehouse, it is a kind of process of continuous feed continuous discharge, crude fibre in the reaction of low temperature, fiber swollen more, the non-fibrous materials such as lignin and there occurs change between fiber, make fiber more softening, to reach the object of slurrying;
(5) process of shove, namely to the process of crude fibre washing; Also be the process of lignin and non-fibrous material and fiber separation, through shove washing, lignin and non-fibrous material stripping are up to 70%, and these non-fibrous materials all remain in water, but these non-fibrous materials do not dissolve in pulping process, only have sex change.They precipitate very soon in water, and they only have precipitation, just can reach the recycle of slurrying liquid;
The water of shove washing, flows into sedimentation basin, and water also has certain temperature after precipitation, and its reuse in spice above, the dope after precipitation, on the dry stacked after it being extracted into dedusting with stock pump, as the raw material producing fertilizer;
(6) clear water of 80 DEG C and hydrogen peroxide and NaOH is added in the slurry after washing shove, adopt following weight proportion: slurry: water: hydrogen peroxide: NaOH=100: 100: 9: 4, enter high-density paste mill defibrination, crude fibre is become fine fibre;
(7) fine fibre sent into after reaction warehouse carries out the cold bleaching of 120 minutes, by the bottom spiral of reaction warehouse, the white slurry feeding press master after drift by spiral;
(8) object of shove pulp washing, extrudes water exactly, and as the water of shove washing above, the water quality whitening slurry like this will be better, and have not a particle of chromophoric group, water easily processes;
(9) non-fibrous material reclaimed, through neutralization, fermentation, join bacterium, add auxiliary material, dry, pulverize, be biological organic fertilizer.
Embodiment 2:
Pulping process for wheat straw:
(1) chaffcutter dedusting: exactly wheat straw is cut into 2-5 centimetre long, effective for impurity etc. dedusting reach wheat straw clean for the purpose of, the material of dedusting is stacked;
(2) wheat straw clean for dedusting is sent to spice spiral, add slurrying recycle-water and hydrogen peroxide and NaOH that temperature is the sedimentation basin of 60 DEG C, adopt following weight proportion: wheat straw: water: hydrogen peroxide: NaOH=100: 500: 4: 7, make wheat straw in spice, play certain softening;
(3) wheat straw of will soften, send into high-density paste mill by spice spiral, wheat straw at this moment becomes crude fibre;
(4) insulation bleaching storehouse sent into by the crude fibre after mill, crude fibre reacts 90 minutes in storehouse, temperature 60 degree, the course of reaction of crude fibre in storehouse is the process of the drop reaction that make use of bleaching storehouse, it is a kind of process of continuous feed continuous discharge, crude fibre in the reaction of low temperature, fiber swollen more, the non-fibrous materials such as lignin and there occurs change between fiber, make fiber more softening, to reach the object of slurrying;
(5) process of shove, namely to the process of crude fibre washing; Also be that lignin divides with non-fibrous material and fiber
From process, through shove washing, lignin and non-fibrous material stripping are up to 70%, and these non-fibrous materials all remain in water, but the not dissolving in pulping process of these non-fibrous materials, only have sex change.They precipitate very soon in water, and they only have precipitation, just can reach the recycle of slurrying liquid;
The water of shove washing, flows into sedimentation basin, and water also has certain temperature after precipitation, and its reuse in spice above, the dope after precipitation, on the dry stacked after it being extracted into dedusting with stock pump, as the raw material producing fertilizer;
(6) wheat straw after washing shove becomes filamental, at this moment the clear water of 80 DEG C and hydrogen peroxide and NaOH is added, adopt following weight proportion: slurry: water: hydrogen peroxide: NaOH=100: 100: 7: 3, enters high-density paste mill defibrination, crude fibre is become fine fibre;
(7) fine fibre sent into after reaction warehouse carries out the cold bleaching of 110 minutes, by the bottom spiral of reaction warehouse, the white slurry feeding press master after drift by spiral;
(8) object of shove pulp washing, extrudes water exactly, as the water of shove washing above.The water quality whitening slurry like this will be better, and have not a particle of chromophoric group, water easily processes;
(9) non-fibrous material reclaimed, through neutralization, fermentation, join bacterium, add auxiliary material, dry, pulverize, be biological organic fertilizer.
Claims (6)
1. an environment friendly pulping process, is characterized in that: comprise the steps:
(1) pulping raw material cuts off dedusting: section pulping raw material being cut into 1-5 centimetre as pulping raw material and by pulping raw material with impurity and soil dispose, the material after dedusting is stacked;
(2) add water, dosing spice: in the pulping raw material after dedusting, add water and H2O2 and NaOH as medicine, in spiral, carry out even spice;
(3) defibrinations: the pulping raw material spiral mixed is sent into fiberizer, raw material is worn into crude fibre;
(4) once bleaching is incubated: the crude fibre spiral of milled is sent into bleaching container and carries out insulation bleaching;
(5) shove washing: the crude fibre after bleaching is carried out shove washing, fiber is separated with non-fibrous material, the water after squeezing flows into sedimentation basin;
(6) secondary dosing: the slurry that shove washs is added H2O2, NaOH and water, and make slurry become fine fibre by defibrination;
(7) secondary insulation bleaching: the fine fibre of milled is sent into bleaching container and carries out insulation bleaching;
(8) shove: squeeze the paper pulp after bleaching, shove water gets back to press master above as shove washings;
(9) pulp washing: washing starches raw material, the reuse after water treatment of the water after washing in vain;
(10) non-fibrous material remanufacture fertilizer: the material of the flocculation after the non-fiber thick substances material stacked after dedusting above, sedimentation basin precipitated, water treatment all reclaims, carries out neutralizing, fermenting and producing fertilizer.
2. environment friendly pulping process according to claim 1, it is characterized in that: in described step (2), the water added during spice is the recycle-water of sedimentation basin, temperature is 40 DEG C ~ 60 DEG C, add water, the weight proportion of medicine is, pulping raw material: water: H2O2: NaOH=100: 300 ~ 800: 0.1 ~ 4: 0.5 ~ 7.
3. environment friendly pulping process according to claim 1 and 2, is characterized in that: during a defibrination, fiberizer used is high-density paste mill or double-screw pulp-milling or devillicate machine.
4. environment friendly pulping process according to claim 1 and 2, is characterized in that: being once incubated the container bleached with secondary is all three-dimensional tower or horizontal tank, and three-dimensional tower bottom is installed in discharging spiral or tank and installed spiral; The temperature being once incubated bleaching is 50 DEG C ~ 70 DEG C, temperature retention time 10 ~ 100 minutes, and the temperature of secondary insulation bleaching is 60 DEG C ~ 80 DEG C, temperature retention time 30 ~ 120 minutes.
5. environment friendly pulping process according to claim 1 and 2, it is characterized in that: in described step (6), slurry is made to become fine fibre by defibrination during secondary dosing, defibrination fiberizer used is high-density paste mill or middle-density refiner, adding the weight proportion be used as medicine to slurry is, slurry: water: H2O2: NaOH=100: 100 ~ 1000: 0.5 ~ 10: 0.1 ~ 4.
6. environment friendly pulping process according to claim 1 and 2, is characterized in that: described pulping raw material is grass or broad-leaved class.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410463453.8A CN105463892A (en) | 2014-09-12 | 2014-09-12 | Environment-friendly pulping technology |
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| CN201410463453.8A CN105463892A (en) | 2014-09-12 | 2014-09-12 | Environment-friendly pulping technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245393A (en) * | 2016-09-14 | 2016-12-21 | 黑龙江秀泉科技有限公司 | Pulp production device |
| CN106758446A (en) * | 2016-11-17 | 2017-05-31 | 鲁洪飞 | A kind of environment friendly pulping process |
| CN109423905A (en) * | 2017-08-30 | 2019-03-05 | 黑龙江如柏科技有限公司 | A kind of paper pulp production line system of no discharging of waste liquid |
| CN112211028A (en) * | 2020-09-18 | 2021-01-12 | 滁州兴邦聚合彩纤有限公司 | Preparation method of chemical fiber pulp |
-
2014
- 2014-09-12 CN CN201410463453.8A patent/CN105463892A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245393A (en) * | 2016-09-14 | 2016-12-21 | 黑龙江秀泉科技有限公司 | Pulp production device |
| CN106245393B (en) * | 2016-09-14 | 2019-01-11 | 黑龙江如柏科技有限公司 | Vegetation pulp production device |
| CN106758446A (en) * | 2016-11-17 | 2017-05-31 | 鲁洪飞 | A kind of environment friendly pulping process |
| CN106758446B (en) * | 2016-11-17 | 2018-03-06 | 鲁洪飞 | A kind of environment friendly pulping process |
| CN109423905A (en) * | 2017-08-30 | 2019-03-05 | 黑龙江如柏科技有限公司 | A kind of paper pulp production line system of no discharging of waste liquid |
| CN112211028A (en) * | 2020-09-18 | 2021-01-12 | 滁州兴邦聚合彩纤有限公司 | Preparation method of chemical fiber pulp |
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