CN1920167A - Pulping method of non-wood-fiber enzymatic slurry - Google Patents
Pulping method of non-wood-fiber enzymatic slurry Download PDFInfo
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- CN1920167A CN1920167A CN 200510029061 CN200510029061A CN1920167A CN 1920167 A CN1920167 A CN 1920167A CN 200510029061 CN200510029061 CN 200510029061 CN 200510029061 A CN200510029061 A CN 200510029061A CN 1920167 A CN1920167 A CN 1920167A
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Abstract
The invention relates to a method for enzymatically preparing non-wood fiber into slurry, wherein it comprises: (1) slicing the material, screening, dedusting, breaking, to obtain staple fiber; (2) immerging the staple fiber into the water with agent, to compress and dewater; (3) immerging the material of step (2) into the additive solution; (4) then grinding and compressing; (5) adding it into enzyme to be enzymed; (6), immerging the enzymed product into the additive water, to be grinded; (7) using general method to screen and remove slag, to obtain the fiber slurry. The inventive product has 34% increased white degree while the slurry yield is 60%.
Description
Technical field
The present invention relates to a kind of pulping method of non-wood-fiber enzymatic slurry.
Background technology
Mainly be based on needlebush, leaf wood to the research of chemi-mechanical pulp in the world at present, domestic also have non-wood materials such as pair bluish dogbane, bagasse, wheat straw to carry out the research of Alkaline Peroxide Mechanical Pulp (APMP) in recent years, but whiteness does not all reach more than 60%.
China is to be the slurrying country of main raw material with careless class, generally adopts chemical pulping, and as soda processes, sulfate process etc., pulping yield generally about 50%, produce a large amount of black liquor in process of production, are difficult to reclaim effectively, cause the pollution of river basin.The length of grass fiber own is short in addition, adopts mechanical feedback, can the transition cut staple in the defibrination process and damage pulp strength.Therefore development has cleaning and gets the raw materials ready and add the change machine sizing process that biological enzyme adds Chemical Pretreatment, is more suitable for preparing in non-wood material having higher-strength, and the paper pulp of higher whiteness has realistic meaning and environment protection significance.
Summary of the invention
The objective of the invention is to disclose a kind of pulping method of non-wood-fiber enzymatic slurry, overcome the defective that in the preparation non-wood pulping, causes the pollution of river basin in the prior art, solve traditional change machine slurry processing non-wood-fiber whiteness, the difficult problem that intensity is not high with soda processes, the existing a large amount of black liquor of sulfate process.
Summary of the invention
Method of the present invention comprises the steps:
(1) raw material is torn cut off to be divided silk, sieve is beaten the dedusting slag, rubs with the hands brokenly, and acquisition length is 10～30mm, and diameter is the dried meat floss shape staple fiber of 0.05～0.5mm;
Said raw material is a kind of or its mixture in oil palm fruit shell fiber, bastose, reed fiber, sugarcane, the wheat straw;
(2) staple fiber is immersed in the water that contains auxiliary agent, and dip time is 60～80 minutes, and dipping temperature is 70～80 ℃, allow plant ash, pigment, degreasing, tannin and hydrolyzable substances partly dissolve in the water, extrusion dehydration then, (compression ratio is 5: 1) sends it into the hot dipping machine;
Said compression ratio refers to the first spiral fluted volume of pressafiner feed end and the ratio of last spiral fluted volume;
The weight ratio of water and raw material is: water: raw material=10～20: 1;
Said auxiliary agent is aluminium polychloride and tetrachloric acid, and the consumption of aluminium polychloride is the 0.1%--0.5% of fibre weight, and tetrachloric acid's consumption is the 0.3%--0.5% of fibre weight.
(3) discongest hot dipping, the raw material of step (2) is discongested hot dipping in containing the aqueous solution of additive, and in the weight of the aqueous solution, additive is 1～2% H
2O
2, 3～7% NaOH and 0.4～1% EDTA, under 60～90 ℃ condition, carry out hot dipping first, discongesting the hot dipping time is 40～60 minutes, ratio of water to material is 9～14: 1, weight ratio;
(4) will discongest raw material after the hot dipping, transferring to weight concentration is 15～25%, carries out pressurized refining, and abrasive disk space 0.3～0.5mm, defibrination are after pressafiner, and being expressed to weight concentration is 10～15%; The hydraulic coupling of pressurized refiner is 0.30～0.4mN;
(5) mill back slurry is at 65～75 ℃, and pH adds the thick liquid enzyme of enzyme processing 90～120 minutes under 5～6 the condition, and the thick liquid of said enzyme is the mixture of thick liquid of zytase and the thick liquid of lignin peroxidase;
The consumption of the thick liquid of enzyme is:
The thick liquid of zytase: 10～20IU/g over dry raw material; (zytase that Ningxia He Shi wall biotech company produces, enzyme 150,000 u/ml alive)
The thick liquid of lignin peroxidase: 1～2IU/g over dry raw material; Yuanda Peroxide Co., Ltd., Shanghai produces.
The thick liquid of said zytase can adopt the commercially available prod;
Term " over dry raw material " refers to the plant fiber material of disregarding moisture content;
(6) with the product after the enzyme reaction, in containing the water of additive, flood, the weight solid content is 10～20%, in the weight of the aqueous solution, additive is 6～8% H
2O
2, 1～5% NaOH, 0.5%～1% EDTA, 1～2% Na
2SO
3, 0.2～0.6% MgSO
4, flooded under 90～98 ℃ the condition 30～70 minutes, then weight concentration be under 18～22% the condition through the normal pressure defibrination, refining plate interval is 0.15～0.3mm;
(7) adopt conventional method washing then, screening, slagging-off obtains enzymatic slurry, and whiteness can reach more than 78%, and fracture length is more than 5200M.
Advantage of the present invention:
Carry out the hot dipping of secondary chemistry, can obtain good pulp strength, whiteness increases by 34%, enzyme is handled and is placed between twice chemical hot dipping, behind the pressurized refining, advantage is raw material after the section of getting the raw materials ready is divided silk and pressure mill, and fiber tentatively separates, and fiber surface area increases, making enzyme and fiber surface directly carry out the probability that physics contacts increases, through the chemical impregnation first time, alkali lye pushes stripping again, and the fiber porosity increases, enzyme is strengthened to fibrous inside diffusion and osmosis, cause the enzyme functioning efficiency to improve, enzyme is handled and is placed on again before the Chemical Pretreatment second time, can bring into play enzyme effectively and handle H
2O
2The facilitation of bleaching is improved the bleachability of non-wood-fiber, makes enzymatic slurry have higher whiteness and stability, and slurry yield is about 60%.
The specific embodiment
Embodiment 1
(1) the oil palm fruit shell fiber tearing cut off is divided silk, sieve is beaten the dedusting slag, rubs with the hands brokenly, and acquisition length is 10mm, and diameter is the dried meat floss shape staple fiber of 0.5mm;
(2) staple fiber is immersed in the water that contains auxiliary agent, and dip time is 20 minutes, and dipping temperature is 80 ℃, allows plant ash, pigment, degreasing, tannin and hydrolyzable substances are partly dissolved in the water, then extrusion dehydration, compression ratio is 5: 2, and wire-dividing broom purification is sent it into the first road hot dipping machine then;
The weight ratio of water and raw material is: water: raw material=20: 1;
Said auxiliary agent is decolor flocculating agent aluminium polychloride and tetrachloric acid, and the aluminium polychloride consumption is 0.4% of a staple fiber weight; Tetrachloric acid's consumption is 0.4% of a staple fiber weight;
(3) discongest hot dipping, containing at the raw material of step (2) in the aqueous solution of additive and discongesting hot dipping, in the weight of the aqueous solution, additive is 1% H
2O
2, 3% NaOH and 0.4% EDTA, under 60 ℃ condition, carry out hot dipping first, discongesting the hot dipping time is 40 minutes, ratio of water to material is 9: 1, weight ratio;
(4) will discongest product after the hot dipping, transferring to weight concentration is 25%, carries out pressurized refining, abrasive disk space 0.3mm, and the hydraulic coupling of pressurized refiner is 0.36mN, behind the defibrination, being expressed to weight concentration is 15%;
(5) mill back slurry is at 75 ℃, and pH adds the thick liquid enzyme of enzyme processing 120 minutes under 5.5 the condition, and the thick liquid of said enzyme is the mixture of thick liquid of zytase and the thick liquid of lignin peroxidase;
The consumption of the thick liquid of enzyme is:
The thick liquid of zytase: 20IU/g over dry raw material;
The thick liquid of lignin peroxidase: 2IU/g over dry raw material;
(6) with the fiber after the enzyme reaction, to flood through washing in the water that is containing additive, weight concentration is 20%, in the weight of the aqueous solution, auxiliary agent is 8% H
2O
2, 5% NaOH, 1% EDTA, 2% Na
2SO
3, 0.6% MgSO
4, dipping is 70 minutes under 98 ℃ the condition, is defibrination under 22% the condition in weight concentration then, refining plate interval 0.15mm;
(7) it is latent to adopt conventional method to disappear then, screening, and slagging-off obtains enzymatic slurry.
Adopt ISO2470---1997, ISO1974---1990 standards detect, and whiteness is 78%, and fracture length is 5200M.
Embodiment 2
(1) bastose and reed fiber (1: 1, weight ratio) are split the cutting silk, sieve is beaten the dedusting slag, rubs with the hands brokenly, and acquisition length is 20mm, and diameter is the dried meat floss shape staple fiber of 0.08mm;
(2) staple fiber is immersed in the water that contains auxiliary agent, and dip time is 60 minutes, and dipping temperature is 70 ℃, allows plant ash, pigment, degreasing, tannin and hydrolyzable substances are partly dissolved in the water, then extrusion dehydration, compression ratio is 5: 1, and wire-dividing broom purification is sent it into the first road hot dipping machine then;
The weight ratio of water and raw material is: water: raw material=10: 1;
Said auxiliary agent is decolor flocculating agent aluminium polychloride and tetrachloric acid, and the consumption of aluminium polychloride is 0.2% of a staple fiber weight; Tetrachloric acid's consumption is 0.3% of a staple fiber weight;
(3) discongest hot dipping, containing at the raw material of step (2) in the aqueous solution of additive and discongesting hot dipping, in the weight of the aqueous solution, additive is 2% H
2O
2, 7% NaOH and 1% EDTA, under 90 ℃ condition, carry out hot dipping first, discongesting the hot dipping time is 60 minutes, ratio of water to material is 14: 1, weight ratio;
(4) will discongest fiber after the hot dipping, transferring to the weight solid content is 15%, carries out pressurized refining, and the hydraulic coupling of pressurized refiner is 0.4mN, refining plate interval 0.3mm, and behind the defibrination, being expressed to weight concentration is 10%;
(5) mill back slurry is at 65 ℃, and pH adds the thick liquid enzyme of enzyme processing 90 minutes under 6 the condition, and the thick liquid of said enzyme is the mixture of thick liquid of zytase and the thick liquid of lignin peroxidase;
The consumption of the thick liquid of enzyme is:
The thick liquid of hemicellulase: 10IU/g over dry raw material;
The thick liquid of lignin peroxidase: 0.1IU/g over dry raw material;
(6) with after the extruding of the product after the enzyme reaction, flood in containing the water of additive, the weight solid content is 10%, and in the weight of the aqueous solution, auxiliary agent is 6% H
2O
2, 1% NaOH, 0.5% EDTA, 1% Na
2SO
3, 0.2% MgSO
4, dipping is 30 minutes under 90 ℃ the condition, is defibrination under 18% the condition in weight concentration then, refining plate interval 0.05～0.2mm;
(7) it is latent to adopt conventional method to disappear then, screening, and slagging-off obtains enzymatic slurry.
Adopt ISO2470---1997, ISO1974---1990 standards detect, and whiteness is 80%, and fracture length is 5200M.
Claims (7)
1. a pulping method of non-wood-fiber enzymatic slurry is characterized in that, comprises the steps:
(1) raw material is torn cut off to be divided silk, sieve is beaten the dedusting slag, rubs with the hands brokenly, and acquisition length is 10～20mm, and diameter is the dried meat floss shape staple fiber of 0.05～0.5mm;
Said raw material is a kind of or its mixture in oil palm fruit shell fiber, bastose, reed fiber, sugarcane, the wheat straw;
(2) staple fiber is immersed in the solution that contains auxiliary agent, through extrusion dehydration, and (compression ratio is 5: 1), wire-dividing broom purification then; Said auxiliary agent is decolor flocculating agent aluminium polychloride and tetrachloric acid;
(3) raw material of step (2) is discongested hot dipping in containing the aqueous solution of additive, and in the weight of the aqueous solution, additive is 1～2% H
2O
2, 3～7% NaOH and 0.4～1% EDTA, under 60～90 ℃ condition, carry out hot dipping first;
(4) will discongest product after the hot dipping, behind pressurized refining, being expressed to the weight solid content is 10～15%;
(5) mill back slurry is at 65～75 ℃, and pH adds the thick liquid enzyme of enzyme processing 90～120 minutes under 5～6 the condition, and the thick liquid of said enzyme is the mixture of thick liquid of zytase and the thick liquid of lignin peroxidase;
(6) with the product after the enzyme reaction, in containing the water of additive, to flood, weight concentration is 10～20%, in the weight of the aqueous solution, auxiliary agent is 6～8% H
2O
2, 1～5% NaOH, 0.5%～1% EDTA, 1～2% Na
2SO
3, 0.2～0.6% MgSO
4, and then the normal pressure defibrination;
(7) adopt conventional method washing then, screening, slagging-off obtains enzymatic slurry.
2. method according to claim 1 is characterized in that, staple fiber is immersed in the water that contains auxiliary agent, and dip time is 60～20 minutes, and dipping temperature is 70～80 ℃, and the weight ratio of water and raw material is:
Water: raw material=10～20: 1.
3. method according to claim 1 is characterized in that, the consumption of aluminium polychloride is the 0.1%--0.5% of fibre weight, and tetrachloric acid's consumption is the 0.3%--0.5% of fibre weight.
4. method according to claim 1 is characterized in that, discongesting the hot dipping time first is 40～60 minutes, and ratio of water to material is 9～14: 1, weight ratio.
5. method according to claim 1 is characterized in that, with the product of discongesting after the hot dipping, transferring to the weight solid content is 15～25%, defibrination.
6. method according to claim 1 is characterized in that, the consumption of the thick liquid of enzyme is:
The thick liquid of zytase: 10～20IU/g over dry raw material;
The thick liquid of lignin peroxidase: 1～2IU/g over dry raw material.
7. method according to claim 1 is characterized in that, with the product after the enzyme reaction, in containing the water of additive, flooded under 90～98 ℃ the condition 30～70 minutes, and be defibrination under 18～22% the condition in weight concentration then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510029061 CN1920167A (en) | 2005-08-24 | 2005-08-24 | Pulping method of non-wood-fiber enzymatic slurry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510029061 CN1920167A (en) | 2005-08-24 | 2005-08-24 | Pulping method of non-wood-fiber enzymatic slurry |
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| CN1920167A true CN1920167A (en) | 2007-02-28 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182693B (en) * | 2007-12-12 | 2010-06-02 | 中冶纸业银河有限公司 | Method capable of stabilizing paper stuff whiteness |
| CN102021859A (en) * | 2010-09-10 | 2011-04-20 | 上海众伟生化有限公司 | Paper-making pulping method by using kenaf aggregate |
| CN102051833A (en) * | 2010-11-15 | 2011-05-11 | 李�昊 | Preparation method of straw matter mechanical pulp |
| CN102154886A (en) * | 2010-12-29 | 2011-08-17 | 山东太阳纸业股份有限公司 | Pretreatment process for cleaning and bleaching chemical mechanical pulp |
| CN102174760A (en) * | 2011-03-14 | 2011-09-07 | 山东轻工业学院 | Process for preparing pulp by using salix mongolia by chemical mechanical method |
| CN102373638A (en) * | 2010-08-27 | 2012-03-14 | 边静 | High-yield clean pulping method from oil palm EFB (empty fruit bunch) fiber through biological enzyme process |
| CN101498109B (en) * | 2008-01-28 | 2012-11-14 | 上海智森纸业科技有限公司 | Stock preparation method before paper pulp making from oil palm empty fruit bunch |
| CN101903592B (en) * | 2007-12-20 | 2013-01-02 | Ifp公司 | Method for converting lignocellulosic solutions having a high dry-material content |
| CN105297528A (en) * | 2015-09-11 | 2016-02-03 | 姚志宏 | Air-permeable temperature-resistant composite raw paper and making method thereof |
| CN113684722A (en) * | 2021-08-31 | 2021-11-23 | 陕西科技大学 | Method for solving shortage problem of raw materials in paper industry by using non-wood fiber resources |
| WO2022098956A1 (en) * | 2020-11-06 | 2022-05-12 | Kimberly-Clark Worldwide, Inc. | High porosity non-wood pulp |
| US12098507B2 (en) | 2021-11-05 | 2024-09-24 | Kimberly-Clark Worldwide, Inc. | High porosity non-wood pulp |
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2005
- 2005-08-24 CN CN 200510029061 patent/CN1920167A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182693B (en) * | 2007-12-12 | 2010-06-02 | 中冶纸业银河有限公司 | Method capable of stabilizing paper stuff whiteness |
| CN101903592B (en) * | 2007-12-20 | 2013-01-02 | Ifp公司 | Method for converting lignocellulosic solutions having a high dry-material content |
| CN101498109B (en) * | 2008-01-28 | 2012-11-14 | 上海智森纸业科技有限公司 | Stock preparation method before paper pulp making from oil palm empty fruit bunch |
| CN102373638B (en) * | 2010-08-27 | 2014-04-23 | 边静 | High-yield clean pulping method from oil palm EFB (empty fruit bunch) fiber through biological enzyme process |
| CN102373638A (en) * | 2010-08-27 | 2012-03-14 | 边静 | High-yield clean pulping method from oil palm EFB (empty fruit bunch) fiber through biological enzyme process |
| CN102021859A (en) * | 2010-09-10 | 2011-04-20 | 上海众伟生化有限公司 | Paper-making pulping method by using kenaf aggregate |
| CN102051833A (en) * | 2010-11-15 | 2011-05-11 | 李�昊 | Preparation method of straw matter mechanical pulp |
| CN102051833B (en) * | 2010-11-15 | 2012-12-05 | 李�昊 | Preparation method of straw matter mechanical pulp |
| CN102154886A (en) * | 2010-12-29 | 2011-08-17 | 山东太阳纸业股份有限公司 | Pretreatment process for cleaning and bleaching chemical mechanical pulp |
| CN102154886B (en) * | 2010-12-29 | 2012-07-04 | 山东太阳纸业股份有限公司 | Pretreatment process for cleaning and bleaching chemical mechanical pulp |
| CN102174760A (en) * | 2011-03-14 | 2011-09-07 | 山东轻工业学院 | Process for preparing pulp by using salix mongolia by chemical mechanical method |
| CN102174760B (en) * | 2011-03-14 | 2012-02-08 | 山东轻工业学院 | Process for preparing pulp by using salix mongolia by chemical mechanical method |
| CN105297528A (en) * | 2015-09-11 | 2016-02-03 | 姚志宏 | Air-permeable temperature-resistant composite raw paper and making method thereof |
| WO2022098956A1 (en) * | 2020-11-06 | 2022-05-12 | Kimberly-Clark Worldwide, Inc. | High porosity non-wood pulp |
| CN113684722A (en) * | 2021-08-31 | 2021-11-23 | 陕西科技大学 | Method for solving shortage problem of raw materials in paper industry by using non-wood fiber resources |
| US12098507B2 (en) | 2021-11-05 | 2024-09-24 | Kimberly-Clark Worldwide, Inc. | High porosity non-wood pulp |
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Open date: 20070228 |