CN102797193B - Paper pulp processing method and coated paper manufacturing method - Google Patents
Paper pulp processing method and coated paper manufacturing method Download PDFInfo
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- CN102797193B CN102797193B CN201110138575.6A CN201110138575A CN102797193B CN 102797193 B CN102797193 B CN 102797193B CN 201110138575 A CN201110138575 A CN 201110138575A CN 102797193 B CN102797193 B CN 102797193B
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Abstract
The invention discloses a paper pulp processing method. The paper pulp processing method comprises the following steps of: providing paper pulp; and adding composite cellulase into the paper pulp, and processing, wherein the composite cellulase is composite enzyme of cellulase and hemicellulase. The invention also provides a coated paper manufacturing method.
Description
Technical field
The invention belongs to pulp and paper technology field, particularly a kind ofly improve the treatment process of paper pulp of the water filtering performance of paper pulp and relate to the coated paper manufacture method of this pulp processing.
Background technology
At present, the demand of people to paper increases day by day, and cause the problems such as paper making raw material shortage, energy deficiency and environmental pollution also outstanding day by day, these problems seriously govern the development of paper industry.
Because timber resources is limited, sight turns to the wide leaf wood raw material such as Eucalyptus, Acacia of fast growth, growth area or careless class to carry out obtained paper pulp by people gradually.But, the drainability of hardwood pulp and straw pulp is poor, and the water filtering performance of paper pulp is one of important indicator of paper pulp ru nnability, it is related to the water separation capability of paper pulp at places such as wire-cloths, if the water filtering performance of paper pulp is not good, then give the follow-up process of manufacturing paper with pulp bring yield poorly, the high inconvenience of energy consumption.
Summary of the invention
Therefore, be necessary to provide a kind for the treatment of process of paper pulp, to improve the water filtering performance of paper pulp.A kind for the treatment of process of paper pulp, comprises step: provide paper pulp; In described paper pulp, add cellulase carry out preliminary treatment; Carry out defibrination process and add complex cellulase in described paper pulp processing to described paper pulp, described complex cellulase is the complex enzyme of cellulase and hemicellulase.
A kind of coated paper manufacture method, comprises step: provide paper pulp; In described paper pulp, add complex cellulase process, described complex cellulase is the complex enzyme of cellulase and hemicellulase; Paper pulp after described process is carried out obtained body paper of manufacturing paper with pulp on a papermaking machine; And form coating layer on the surface of described body paper.
Technical scheme provided by the invention adopts complex cellulase pulp treatment, can improve the water filtering performance of paper pulp, when paper pulp is made paper, can adopt the higher speed of a motor vehicle, obtain higher output, and reduce energy consumption.
Accompanying drawing explanation
Fig. 1 is the schematic diagram for the treatment of process of paper pulp provided by the invention.
Fig. 2 is the schematic diagram of coated paper manufacture method provided by the invention.
Detailed description of the invention
Below in conjunction with accompanying drawing and multiple embodiment, treatment process of paper pulp provided by the invention and the coated paper manufacture method that relates to this pulp processing are described in further detail.
Refer to Fig. 1, first embodiment of the invention provides a kind for the treatment of process of paper pulp, and it comprises the following steps:
The first step, provides paper pulp.Described paper pulp can be commercially available hardwood pulp, particularly, can be eucalyptus pulp, yearning between lovers wood pulp and weedtree hardwood pulp etc.Certainly, this paper pulp also can be embodied as straw pulp.
Second step, adds complex cellulase and processes in described paper pulp, and described complex cellulase is the complex enzyme of cellulase and hemicellulase.
In described complex cellulase, the suitable enzyme proportioning alive of cellulase and hemicellulase is 8: 1 to 4: 1, and the enzyme of described complex cellulase is lived as 4800HCU/g.In the present embodiment, the consumption of described complex cellulase is 0.03 kilogram per tonne oven dry stock to 0.15 kilogram per tonne oven dry stock.
When using above-mentioned complex cellulase to process paper pulp, adjustment slurry is dense is 3% to 10%, and adjustment pH condition is 6 to 9.5, and maintain the temperature at 30 degrees Celsius to 60 degrees Celsius, the processing time is 20 minutes to 90 minutes.Preferably, starching dense is 3% to 5%, and temperature remains on 40 degrees Celsius to 55 degrees Celsius, and pH condition is 7 to 8, and the processing time is 30 minutes to 60 minutes.
Second embodiment of the invention provides a kind for the treatment of process of paper pulp, and it comprises the following steps:
The first step, provides paper pulp.Described paper pulp can be commercially available hardwood pulp, particularly, can be eucalyptus pulp, yearning between lovers wood pulp and weedtree hardwood pulp etc.Certainly, this paper pulp also can be embodied as straw pulp.
Second step, carries out defibrination process by paper pulp, and the fiber in further size degradation paper pulp or conduit fragment make it to diminish.
Conduit is the water conduction tissue in broadleaf, and being connected by the end wall of the larger tubular fossils of diameter forms, and is one of the characteristic structural of broad-leaved wood.Guide-tube structure also exists in careless class.Hardwood pulp or straw pulp are in slurrying, bulk and softening transform is produced because vessel cell is difficult to water suction swollen, under mechanical jordaning effect, conduit is easily cut into by cutterhead has distinct form and certain rigidity (non-soft and brooming) conduit fragment, these fractal surfaces free radicals are less, in paper-making process, retain in the conduit fragment of paper, and the binding ability of other fibers is more weak, in printing process, very easily causes paper to be pulled up or fall a mao paper defects.Can make it to diminish by size degradation conduit fragment further by defibrination process, reduce the shaping rear paper of paper and be pulled up a form reduction, fall mao phenomenon and reduce.
The equipment such as existing hollander, two mill, conical refiner or cylindrical jordan can be adopted to carry out defibrination process.
3rd step, adds complex cellulase and processes in described paper pulp, and described complex cellulase is the complex enzyme of cellulase and hemicellulase.
In described complex cellulase, the suitable enzyme proportioning alive of cellulase and hemicellulase is 8: 1 to 4: 1, and the enzyme of described complex cellulase is lived as 4800HCU/g.In the present embodiment, the consumption of described complex cellulase is 0.03 kilogram per tonne oven dry stock to 0.15 kilogram per tonne oven dry stock.
When using above-mentioned complex cellulase to process paper pulp, adjustment slurry is dense is 3% to 10%, and adjustment pH condition is 6 to 9.5, and maintain the temperature at 30 degrees Celsius to 60 degrees Celsius, the processing time is 20 minutes to 90 minutes.Preferably, starching dense is 3% to 5%, and temperature remains on 40 degrees Celsius to 55 degrees Celsius, and pH condition is 7 to 8, and the processing time is 30 minutes to 60 minutes.
Third embodiment of the invention provides a kind for the treatment of process of paper pulp, and it comprises the following steps:
The first step, provides paper pulp.Described paper pulp is commercially available hardwood pulp, particularly, can be eucalyptus pulp, yearning between lovers wood pulp and weedtree hardwood pulp etc.Certainly, this paper pulp also can be embodied as straw pulp.
Second step, adds cellulase and carries out preliminary treatment in described paper pulp.
Described cellulase be preferably purity higher than 98.5% restriction endonuclease, its enzyme is lived as 4500ECU/g.In the present embodiment, the consumption of described cellulase is 0.06 kilogram per tonne oven dry stock to 0.15 kilogram per tonne oven dry stock.
When using above-mentioned cellulase to carry out preliminary treatment to paper pulp, adjustment slurry is dense is 3% to 10%, and adjustment pH condition is 6 to 8, maintains the temperature at 30 degrees Celsius to 60 degrees Celsius, and the processing time is 1 little of 3 hours.Preferably, starching dense is 3% to 5%, and temperature remains on 40 degrees Celsius to 55 degrees Celsius, and pH condition is 7 to 8, and the processing time is 1.5 little of 2 hours.
There is conduit fragment problems in the hardwood pulp as described in above-mentioned second embodiment or straw pulp, in above-mentioned processing procedure, cellulase acts on fiber in paper pulp and conduit fragment, make the cellulose of fiber and catheter surface that mild hydrolysis, hole increase occur, thus the run-inflation effect of water to fiber and conduit is strengthened, be beneficial to improve wire-dividing broom purification in follow-up defibrination process, increase copy paper intensity, and strengthen the size degradation effect of defibrination to conduit.
3rd step, carries out defibrination process to described paper pulp, and the fiber in further size degradation paper pulp or conduit fragment make it to diminish.
Defibrination process can make the conduit fragment of wood pulp obtain further size degradation and diminish.
The equipment such as existing hollander, two mill, conical refiner or cylindrical jordan can be adopted to carry out defibrination process.
Due to the fiber in paper pulp and conduit fragment in above-mentioned second step by the abundant swollen of water, the easier defibrination brooming of fiber, the demand for defibrination power reduces; The bulkiness of conduit fragment inside and the property of softening improve, and more easily tear and fester during defibrination, and size degradation effect improves and external fibrillation degree also improves relatively.Paper pulp through second step process can obviously reduce defibrination time and power consumption, and, the tensile strength of pulp, pop strength, cohesive force and surface strength all obtain larger raising, particularly, on average can improve 12% to 20%, the paper that paper pulp obtains after manufacturing paper with pulp has benefited from the promotion of cellulase to the size degradation of conduit fiber and the raising of surface strength, and paper is pulled up or falls mao phenomenon and can reduce by 50%.
4th step, adds complex cellulase in the paper pulp after defibrination and processes, and described complex cellulase is the complex enzyme of cellulase and hemicellulase.
In described complex cellulase, the suitable enzyme proportioning alive of cellulase and hemicellulase is 8: 1 to 4: 1, and the enzyme of described complex cellulase is lived as 4800HCU/g.In the present embodiment, the consumption of described complex cellulase is 0.03 kilogram per tonne oven dry stock to 0.15 kilogram per tonne oven dry stock.
When using above-mentioned complex cellulase to process paper pulp, adjustment slurry is dense is 3% to 10%, and adjustment pH condition is 6 to 9.5, and maintain the temperature at 30 degrees Celsius to 60 degrees Celsius, the processing time is 20 minutes to 90 minutes.Preferably, starching dense is 3% to 5%, and temperature remains on 40 degrees Celsius to 55 degrees Celsius, and pH condition is 7 to 8, and the processing time is 30 minutes to 60 minutes.
In the slurry processing procedure of first, second and third embodiment above-mentioned, complex cellulase acts on the high microfibre surface of accessibility, there is in hydrolyzable fiber fines the microfibre of low-crystallinity and high water retention value, reduce the water retention characteristic of fiber fines component, simultaneously, complex cellulase produces slight stripping effect on the main fibre surface of brooming, only be hydrolyzed and cut off the amorphous hemicellulose chain exposed, thus the effect reduced between paper pulp and water, improve slurry water filtering performance.Further, the cellulase of complex cellulase and hemicellulase all comprise restriction endonuclease and excision enzyme, the high amorphous regions of described restriction endonuclease hydrolysis microfibre, described excision enzyme cellulolytic reduction base and non-reduced base end, impel the primary water-soluble colloidal substance degradeds such as microfibre, reduce the effect between fiber and water, improve the water filtering performance of pulp.
Refer to Fig. 2, the present invention also provides a kind of coated paper manufacture method, and this coated paper manufacture method also comprises except the step that first, second and third embodiment provides respectively: the paper pulp after process is carried out obtained body paper of manufacturing paper with pulp on a papermaking machine; And form coating layer on the surface of described body paper.
Described coating layer is included in described body paper surface and carries out oxidized starch top sizing, and one side resin added is 3 grams every square metre to 4 grams every square metre.
Form the coated paper intensity obtained after coating layer to get back raising, and paper pulls up a little and falls a mao phenomenon and cut down.
Technical scheme provided by the invention adopts complex cellulase pulp treatment, can improve the water filtering performance of paper pulp, when paper pulp is made paper, can adopt the higher speed of a motor vehicle, obtain higher output, and reduce energy consumption.
Further, the technical scheme that above-mentioned second and third embodiment embodies also has following advantage: the balance that can to obtain pulp strength and water filtering performance without the need to taking refining intensity into account on the impact of Pulp Drainage Properties.That is, guaranteeing, under slurry water filtering performance prerequisite, to carry out defibrination to paper pulp, to promote the action effect to conduit size degradation, the size of conduit fragment can be reduced, promoting magma intensity and copy paper paper intensity, reduce paper and pull up a little and fall a mao phenomenon.
Especially the technical scheme that provides of third embodiment of the invention, (eucalyptus pulp is comprised for hardwood pulp, yearning between lovers wood pulp, and weedtree hardwood pulp) process, under maintenance slurry C SF (freedom) and fast drainage performance condition, paper pulp handmade paper paper is pulled up reduction by more than 50%, have with CSF magma intensity simultaneously and comparatively significantly improve, improve 12 ~ 15%, after copy paper, body paper paper after top sizing is pulled up reduction by more than 38%, body paper intensity slightly improves, after body paper applying glue, coating composition obtains coated paper in addition again, then coated paper paper is pulled up or falls a mao phenomenon and substantially eliminates.
Be understandable that, for the person of ordinary skill of the art, other various corresponding change and distortion can be made by technical conceive according to the present invention, and all these change the protection domain that all should belong to the claims in the present invention with distortion.
Claims (2)
1. a treatment process of paper pulp, comprises step:
Paper pulp is provided;
In described paper pulp, add cellulase carry out preliminary treatment, described cellulase be purity higher than 98.5% restriction endonuclease, its enzyme is lived as 4500ECU/g, and the consumption of described cellulase is 0.06 kilogram per tonne oven dry stock to 0.15 kilogram per tonne oven dry stock;
Defibrination process is carried out to described paper pulp; And
In described paper pulp, add complex cellulase process, described complex cellulase is the complex enzyme of cellulase and hemicellulase, wherein, the cellulase of described complex cellulase and hemicellulase all comprise restriction endonuclease and excision enzyme, the suitable enzyme proportioning alive of described cellulase and hemicellulase is 8:1 to 4:1, the enzyme of described complex cellulase is lived as 4800HCU/g, and the consumption of described complex cellulase is 0.03 kilogram per tonne oven dry stock to 0.15 kilogram per tonne oven dry stock;
In described paper pulp, add the condition that described complex cellulase carries out processing is starch dense 3% to 10%, and temperature 30 degrees Celsius to 60 degrees Celsius, pH condition is 6 to 9.5, and the processing time is 20 minutes to 90 minutes.
2. a coated paper manufacture method, comprises step:
Paper pulp is provided;
In described paper pulp, add cellulase carry out preliminary treatment;
Described cellulase be purity higher than 98.5% restriction endonuclease, its enzyme is lived as 4500ECU/g, and the consumption of described cellulase is 0.06 kilogram per tonne oven dry stock to 0.15 kilogram per tonne oven dry stock;
Defibrination process is carried out to described paper pulp;
In described paper pulp, add complex cellulase process, described complex cellulase is the complex enzyme of cellulase and hemicellulase; Wherein, the cellulase of described complex cellulase and hemicellulase all comprise restriction endonuclease and excision enzyme, the suitable enzyme proportioning alive of described cellulase and hemicellulase is 8:1 to 4:1, the enzyme of described complex cellulase is lived as 4800HCU/g, and the consumption of described complex cellulase is 0.03 kilogram per tonne oven dry stock to 0.15 kilogram per tonne oven dry stock;
In described paper pulp, add the condition that described complex cellulase carries out processing is starch dense 3% to 10%, temperature 30 degrees Celsius to 60 degrees Celsius, and pH condition is 6 to 9.5, and the processing time is 20 minutes to 90 minutes;
Paper pulp after described process is carried out obtained body paper of manufacturing paper with pulp on a papermaking machine; And
Coating layer is formed on the surface of described body paper;
Form coating layer by carrying out oxidized starch applying glue on described body paper surface, the consumption of described oxidized starch is 3 grams every square metre to 4 grams every square metre.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110138575.6A CN102797193B (en) | 2011-05-26 | 2011-05-26 | Paper pulp processing method and coated paper manufacturing method |
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| CN201110138575.6A CN102797193B (en) | 2011-05-26 | 2011-05-26 | Paper pulp processing method and coated paper manufacturing method |
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| CN102797193A CN102797193A (en) | 2012-11-28 |
| CN102797193B true CN102797193B (en) | 2015-04-01 |
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| CN105178088A (en) * | 2015-08-10 | 2015-12-23 | 天津科技大学 | Method for preparing water absorbent fiber |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5725732A (en) * | 1994-11-18 | 1998-03-10 | P. H. Glatfelter Company | Process for treating hardwood pulp with an enzyme mixture to reduce vessel element picking |
| CN100390354C (en) * | 2006-02-28 | 2008-05-28 | 山东轻工业学院 | Swlfate wood-pulp enzyme-method modifying process |
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2011
- 2011-05-26 CN CN201110138575.6A patent/CN102797193B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5725732A (en) * | 1994-11-18 | 1998-03-10 | P. H. Glatfelter Company | Process for treating hardwood pulp with an enzyme mixture to reduce vessel element picking |
| CN100390354C (en) * | 2006-02-28 | 2008-05-28 | 山东轻工业学院 | Swlfate wood-pulp enzyme-method modifying process |
Non-Patent Citations (3)
| Title |
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| Combination of alkaline and enzymatic treatments as a process for upgrading sisal paper-grade pulp to dissolving-grade pulp;David Ibarra等;《Bioresource Technology》;20101231;第101卷;第7416-7423页 * |
| 复合纤维素酶处理改善磨木浆质量的研究;董毅等;《黑龙江造纸》;20091231(第2期);第8-14页 * |
| 纤维素/半纤维素酶配合漆酶预处理马尾松未漂磨石磨木浆的研究;汤振江等;《林产化工通讯》;20051231;第39卷(第4期);第7页左栏第2-32行，第9页左栏倒数第1-8行，右栏 * |
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