CN106012654A - Preparation method for high-quality paper pulp - Google Patents
Preparation method for high-quality paper pulp Download PDFInfo
- Publication number
- CN106012654A CN106012654A CN201610401618.8A CN201610401618A CN106012654A CN 106012654 A CN106012654 A CN 106012654A CN 201610401618 A CN201610401618 A CN 201610401618A CN 106012654 A CN106012654 A CN 106012654A
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- China
- Prior art keywords
- paper pulp
- starch
- quality
- raw material
- linking agent
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/20—Pulping cellulose-containing materials with organic solvents or in solvent environment
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
Abstract
The invention discloses a preparation method for high-quality paper pulp. According to the method, raw materials for the paper pulp are extracted from reed and are cheap; the raw materials of the reed paper pulp undergo reaction and bonding with groups of a cross-linking agent, so the cross-linking agent functions as a bridge between starch and starch and between starch and fiber and allows connections to be formed between starch and starch, between starch and fiber and between fiber and fiber, thereby forming a network structure; and thus, the strength of the paper pulp is greatly improved.
Description
Technical field
The present invention relates to pulp technology for making paper, be specifically related to the preparation method of a kind of high-quality paper pulp.
Background technology
The timber resources of China extremely lacks, and paper making raw material bottleneck is particularly thorny.Phragmites communis is a kind of important non-wood papermaking raw material, has higher cost performance.Therefore, the scientific and reasonable problem utilizing the non-wood materials such as phragmites communis can solve China's paper making raw material deficiency.
The yield (the slurry oven-dry weight that ovendriedwood per ton can be prepared) of paper pulp raw material material is high, and pulping waste liquor pollutes and is easily handled less, meets the development need of green technology for making paper.But due to the intensity difference of paper pulp raw material, reduce the quality of paper, thus limit its a large amount of uses in papermaking.Existing technology is to improve the intensity of slurry by adding starch in the slurry, but in such method, the retention rate of starch is relatively low, have impact on the lifting of pulp strength.
Additive for paper making is the biggest on the impact of paper quality.Generally additive for paper making does not contains fiber, but the paper toughness produced is inadequate, and paper is more crisp, is easily broken off.A kind of additive for paper making improving paper toughness it is badly in need of, by increasing capacitance it is possible to increase the toughness of paper, it is possible to extend the shelf-life of paper products on market.
Summary of the invention
The present invention provides the preparation method of a kind of high-quality paper pulp, uses paper pulp prepared by the method, and cost of material is cheap, this paper pulp the paper good toughness prepared.
To achieve these goals, the present invention provides the preparation method of a kind of high-quality paper pulp, and the method comprises the steps:
(1) phragmites communis is utilized to extract paper pulp raw material
Phragmites communis dry and wet stock preparation, phragmites communis uniform cut, lightweight dust is removed through winnower, the fine impurities such as silt, reed marrow is screened out again through rotary strainer, last removing dust machine removes Folium Phragmitis, reed film etc., thering is provided length 20-40mm, qualification rate reed sheet more than 85% washs further remove impurity through water, and the phragmites communis mass dryness fraction after dehydration is not less than 35%；
Prehydrolysis: carry out in digester, water is as the Extraction solvent of hemicellulose, process conditions are: to clean over dry phragmites communis raw material, solid-to-liquid ratio is 1: 3-7, it is warming up to 150-190 DEG C, insulation 50-200 minute at this temperature, hydrolysis endpoint pH is 2.5-4.5, and control hydrolysis process and hydrolyzate are to pentose sugar concentration≤40% of extracting solution；
Solid-liquor separation and washing, collect filtrate and prepare extracting solution, collect residue standby；
Reed residue high boiling alcohol method prepares paper pulp, obtains paper pulp raw material；
(2) in this paper pulp raw material, starch is added, cross-linking agent and catalyst mix homogeneously, wherein, this starch can be ative starch, denaturated starch by acid, Oxytarch, esterification starch, in etherification starch one or more, this cross-linking agent is Biformyl, glutaraldehyde, epoxychloropropane, one or more in sodium trimetaphosphate, this catalyst can be magnesium sulfate or magnesium chloride, rise catalytic action for magnesium ion, the 2%-10% that absolute dry mass is absolute dried paper pulp raw materials quality of the starch added, the 0.05%-0.25% that quality is absolute dried paper pulp raw materials quality of the cross-linking agent added, the 0.04%-0.1% that quality is absolute dried paper pulp raw materials quality of the catalyst added；
(3) the above-mentioned paper pulp raw material being added with starch, cross-linking agent and catalyst is warming up to 50-60 DEG C, and is kept stirring for 5-30min at this temperature；
(4) add water in the slurry that above-mentioned steps prepares, make pulp dilution to mass percentage concentration 1-4%, the slurry after dilution is discongested, obtains high-quality paper pulp.
High-quality pulp making process of the present invention, paper pulp raw material is extracted from phragmites communis, with low cost, reed pulp raw material is bonded with the radical reaction of cross-linking agent, make cross-linking agent between starch and starch, between starch and fiber, play function served as bridge, make starch couple together with fiber with fiber and fiber with starch, starch, form network structure, thus greatly improve the intensity of paper pulp.
Detailed description of the invention
Embodiment one
Phragmites communis dry and wet stock preparation, phragmites communis uniform cut, lightweight dust is removed through winnower, the fine impurities such as silt, reed marrow is screened out again through rotary strainer, last removing dust machine removes Folium Phragmitis, reed film etc., thering is provided length 20-40mm, qualification rate reed sheet more than 85% washs further remove impurity through water, and the phragmites communis mass dryness fraction after dehydration is not less than 35%.
Prehydrolysis: carry out in digester, water is as the Extraction solvent of hemicellulose.Process conditions are: to clean over dry phragmites communis raw material, solid-to-liquid ratio is 1: 3, is warming up to 150 DEG C, at this temperature insulation 50 minutes, and hydrolysis endpoint pH is 2.5-4.5, and control hydrolysis process and hydrolyzate are to pentose sugar concentration≤40% of extracting solution；Solid-liquor separation and washing, collect filtrate and prepare extracting solution, collect residue standby；Reed residue high boiling alcohol method prepares paper pulp, obtains paper pulp raw material.
Starch is added in this paper pulp raw material, cross-linking agent and catalyst mix homogeneously, wherein, this starch can be ative starch, denaturated starch by acid, Oxytarch, esterification starch, in etherification starch one or more, this cross-linking agent is Biformyl, glutaraldehyde, epoxychloropropane, one or more in sodium trimetaphosphate, this catalyst can be magnesium sulfate or magnesium chloride, rise catalytic action for magnesium ion, absolute dry mass is absolute dried paper pulp raw materials quality the 2% of the starch added, quality is absolute dried paper pulp raw materials quality the 0.05% of the cross-linking agent added, quality is absolute dried paper pulp raw materials quality the 0.04% of the catalyst added.
The above-mentioned paper pulp raw material being added with starch, cross-linking agent and catalyst is warming up to 50 DEG C, and is kept stirring for 5min at this temperature.
Add water in the slurry that above-mentioned steps prepares, make pulp dilution to mass percentage concentration 1%, the slurry after dilution is discongested, obtains high-quality paper pulp.
Embodiment two
Phragmites communis dry and wet stock preparation, phragmites communis uniform cut, lightweight dust is removed through winnower, the fine impurities such as silt, reed marrow is screened out again through rotary strainer, last removing dust machine removes Folium Phragmitis, reed film etc., thering is provided length 20-40mm, qualification rate reed sheet more than 85% washs further remove impurity through water, and the phragmites communis mass dryness fraction after dehydration is not less than 35%.
Prehydrolysis: carry out in digester, water is as the Extraction solvent of hemicellulose.Process conditions are: to clean over dry phragmites communis raw material, solid-to-liquid ratio is 1: 7, is warming up to 190 DEG C, at this temperature insulation 200 minutes, and hydrolysis endpoint pH is 2.5-4.5, and control hydrolysis process and hydrolyzate are to pentose sugar concentration≤40% of extracting solution；Solid-liquor separation and washing, collect filtrate and prepare extracting solution, collect residue standby；Reed residue high boiling alcohol method prepares paper pulp, obtains paper pulp raw material.
Starch is added in this paper pulp raw material, cross-linking agent and catalyst mix homogeneously, wherein, this starch can be ative starch, denaturated starch by acid, Oxytarch, esterification starch, in etherification starch one or more, this cross-linking agent is Biformyl, glutaraldehyde, epoxychloropropane, one or more in sodium trimetaphosphate, this catalyst can be magnesium sulfate or magnesium chloride, rise catalytic action for magnesium ion, absolute dry mass is absolute dried paper pulp raw materials quality the 10% of the starch added, quality is absolute dried paper pulp raw materials quality the 0.25% of the cross-linking agent added, quality is absolute dried paper pulp raw materials quality the 0.1% of the catalyst added.
The above-mentioned paper pulp raw material being added with starch, cross-linking agent and catalyst is warming up to 60 DEG C, and is kept stirring for 30min at this temperature.
Add water in the slurry that above-mentioned steps prepares, make pulp dilution to mass percentage concentration 4%, the slurry after dilution is discongested, obtains high-quality paper pulp.
Describing the present invention the most by way of example, but the invention is not restricted to above-mentioned specific embodiment, all any change or modification done based on the present invention belong to the scope of protection of present invention.
Claims (1)
1. a preparation method for high-quality paper pulp, the method comprises the steps:
(1) phragmites communis is utilized to extract paper pulp raw material
Phragmites communis dry and wet stock preparation, phragmites communis uniform cut, lightweight dust is removed through winnower, the fine impurities such as silt, reed marrow is screened out again through rotary strainer, last removing dust machine removes Folium Phragmitis, reed film etc., thering is provided length 20-40mm, qualification rate reed sheet more than 85% washs further remove impurity through water, and the phragmites communis mass dryness fraction after dehydration is not less than 35%；
Prehydrolysis: carry out in digester, water is as the Extraction solvent of hemicellulose, process conditions are: to clean over dry phragmites communis raw material, solid-to-liquid ratio is 1: 3-7, it is warming up to 150-190 DEG C, insulation 50-200 minute at this temperature, hydrolysis endpoint pH is 2.5-4.5, and control hydrolysis process and hydrolyzate are to pentose sugar concentration≤40% of extracting solution；
Solid-liquor separation and washing, collect filtrate and prepare extracting solution, collect residue standby；
Reed residue high boiling alcohol method prepares paper pulp, obtains paper pulp raw material；
(2) in this paper pulp raw material, starch is added, cross-linking agent and catalyst mix homogeneously, wherein, this starch can be ative starch, denaturated starch by acid, Oxytarch, esterification starch, in etherification starch one or more, this cross-linking agent is Biformyl, glutaraldehyde, epoxychloropropane, one or more in sodium trimetaphosphate, this catalyst can be magnesium sulfate or magnesium chloride, rise catalytic action for magnesium ion, the 2%-10% that absolute dry mass is absolute dried paper pulp raw materials quality of the starch added, the 0.05%-0.25% that quality is absolute dried paper pulp raw materials quality of the cross-linking agent added, the 0.04%-0.1% that quality is absolute dried paper pulp raw materials quality of the catalyst added；
(3) the above-mentioned paper pulp raw material being added with starch, cross-linking agent and catalyst is warming up to 50-60 DEG C, and is kept stirring for 5-30min at this temperature；
(4) add water in the slurry that above-mentioned steps prepares, make pulp dilution to mass percentage concentration 1-4%, the slurry after dilution is discongested, obtains high-quality paper pulp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610401618.8A CN106012654A (en) | 2016-06-11 | 2016-06-11 | Preparation method for high-quality paper pulp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610401618.8A CN106012654A (en) | 2016-06-11 | 2016-06-11 | Preparation method for high-quality paper pulp |
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| CN106012654A true CN106012654A (en) | 2016-10-12 |
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| CN201610401618.8A Pending CN106012654A (en) | 2016-06-11 | 2016-06-11 | Preparation method for high-quality paper pulp |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110791047A (en) * | 2019-07-15 | 2020-02-14 | 华南理工大学 | Nontoxic harmless high-strength high-heat-resistance hemicellulose foam composite material and preparation method thereof |
| CN110903579A (en) * | 2019-11-25 | 2020-03-24 | 华南理工大学 | Nontoxic harmless high-mechanical-strength high-elasticity hemicellulose foam composite material and preparation method thereof |
| CN112376315A (en) * | 2020-11-11 | 2021-02-19 | 济南森瑞达纸业有限公司 | Offset printing paper and preparation method thereof |
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| KR100496798B1 (en) * | 2003-02-12 | 2005-06-22 | 이강진 | Method of manufacturing a tea-bag sheet |
| CN101538814A (en) * | 2009-04-24 | 2009-09-23 | 焦作银兴特纤科技发展有限公司 | Solid waste paper pulp and manufacturing method thereof |
| CN103290720A (en) * | 2012-02-28 | 2013-09-11 | 金东纸业（江苏）股份有限公司 | Pulp and preparation method thereof, and paper prepared from pulp |
| CN104988783A (en) * | 2015-07-23 | 2015-10-21 | 长沙理工大学 | Pulping method of reed organic solvent slurry by pre-extracting hemicellulose and product thereof |
| CN104988782A (en) * | 2015-07-23 | 2015-10-21 | 长沙理工大学 | Reed salt catalysis high boiling alcohol method pulping process |
-
2016
- 2016-06-11 CN CN201610401618.8A patent/CN106012654A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100496798B1 (en) * | 2003-02-12 | 2005-06-22 | 이강진 | Method of manufacturing a tea-bag sheet |
| CN101538814A (en) * | 2009-04-24 | 2009-09-23 | 焦作银兴特纤科技发展有限公司 | Solid waste paper pulp and manufacturing method thereof |
| CN103290720A (en) * | 2012-02-28 | 2013-09-11 | 金东纸业（江苏）股份有限公司 | Pulp and preparation method thereof, and paper prepared from pulp |
| CN104988783A (en) * | 2015-07-23 | 2015-10-21 | 长沙理工大学 | Pulping method of reed organic solvent slurry by pre-extracting hemicellulose and product thereof |
| CN104988782A (en) * | 2015-07-23 | 2015-10-21 | 长沙理工大学 | Reed salt catalysis high boiling alcohol method pulping process |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110791047A (en) * | 2019-07-15 | 2020-02-14 | 华南理工大学 | Nontoxic harmless high-strength high-heat-resistance hemicellulose foam composite material and preparation method thereof |
| CN110791047B (en) * | 2019-07-15 | 2022-03-29 | 华南理工大学 | Nontoxic harmless high-strength high-heat-resistance hemicellulose foam composite material and preparation method thereof |
| CN110903579A (en) * | 2019-11-25 | 2020-03-24 | 华南理工大学 | Nontoxic harmless high-mechanical-strength high-elasticity hemicellulose foam composite material and preparation method thereof |
| CN110903579B (en) * | 2019-11-25 | 2022-03-25 | 华南理工大学 | Nontoxic harmless high-mechanical-strength high-elasticity hemicellulose foam composite material and preparation method thereof |
| CN112376315A (en) * | 2020-11-11 | 2021-02-19 | 济南森瑞达纸业有限公司 | Offset printing paper and preparation method thereof |
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Application publication date: 20161012 |