CN110438835A - A method of improving high yield pulp fiber flexibility - Google Patents

A method of improving high yield pulp fiber flexibility Download PDF

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Publication number
CN110438835A
CN110438835A CN201910672286.0A CN201910672286A CN110438835A CN 110438835 A CN110438835 A CN 110438835A CN 201910672286 A CN201910672286 A CN 201910672286A CN 110438835 A CN110438835 A CN 110438835A
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CN
China
Prior art keywords
high yield
yield pulp
ozone
processing
cellulase
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910672286.0A
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Chinese (zh)
Inventor
曹海兵
安兴业
鲁宾
刘洪斌
张润青
徐东
董红明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG JINGXING PAPER JOINT STOCK CO Ltd
Original Assignee
ZHEJIANG JINGXING PAPER JOINT STOCK CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZHEJIANG JINGXING PAPER JOINT STOCK CO Ltd filed Critical ZHEJIANG JINGXING PAPER JOINT STOCK CO Ltd
Priority to CN201910672286.0A priority Critical patent/CN110438835A/en
Publication of CN110438835A publication Critical patent/CN110438835A/en
Priority to EP19219097.3A priority patent/EP3770322A1/en
Priority to PCT/CN2019/129642 priority patent/WO2021012616A1/en
Pending legal-status Critical Current

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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
    • D21H11/10—Mixtures of chemical and mechanical pulp
    • 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
    • D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
    • D21C3/045—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides in presence of O2 or O3
    • 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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
    • 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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
    • 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
    • D21H17/005—Microorganisms or enzymes
    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/22—Agents rendering paper porous, absorbent or bulky
    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/32—Bleaching agents

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  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

The present invention relates to a kind of method for improving high yield pulp fiber flexibility, including high yield pulp, method is handled by cellulase the following steps are included: handled by ozone high yield pulp；Advantages of the present invention: the high yield pulp in the present invention passes sequentially through ozone and cellulase processing, make the removal of surface lignin by ozone, so that the flexibility of fiber is increased, fibre structure is set to become loose simultaneously, " channel " can be opened for entering for cellulase, cellulase makes hydrone enter fibrous inside, distance increases between fiber macromolecular chain, leading to fiber, deformation occurs, stiffness by itself reduces, to promote pliability, the present invention carries out cellulase processing on the basis of ozone is pretreated to high yield pulp, increase the accessibility of cellulase and fiber, secondly, ozone is as a kind of green reagent, and it can be under the premise of not polluting or of low pollution environment, improve the pliability of fiber.

Description

A method of improving high yield pulp fiber flexibility
Technical field
The present invention relates to a kind of methods for improving high yield pulp fiber flexibility.
Background technique
In order to seek the pulping technique of high yield pulp1, high-quality, low pollution, chemical machinery is developed since the 1970s Method slurrying, i.e., so-called high yield cooking, high yield pulp1 of the resulting high yield pulp of high yield cooking in manufacturing process, low pollution, Paper mill is set to produce the excellent product of capability and performance at a lower cost, it may be said that high-yield pulp is in aspect of performance The neutral gear between tradition machinery slurry and chemical pulp is filled up.In recent years, high yield pulp is by it at numerous functionality in terms of paper Advantage, such as high bulk, high-stiffness, opacity are big, dimensional stability is good, printability is good, obtain in various paper and cardboard It is widely applied.
But with the raising of quality of the life, people increasingly pay close attention to the pliability of paper, gradually make high-yield pulp The shortcomings that be exposed, the flexibility of high-yield pulp fiber not enough it is good become hinder its development an important factor for one of, application Number be 2016105224934 Chinese patent, disclose a kind of production method of tissue containing high yield pulp, beaten by crushing type Sizing process carries out mill mashing to high yield pulp, and beating consistency 20% controls stock freeness in 250~400mL；Due to High yield pulp is pre-processed using crushing type beating process, on the one hand, conquassation pretreatment can reduce fiber finer cell volume, The water retention value for influencing paper pulp fiber, influences the water imbibition of tissue；On the other hand, lignin content shadow of the conquassation pretreatment to fiber It rings less, to influence the binding force in tissue between fiber, leads to the reduction of tissue mechanical strength.
Summary of the invention
Present invention purpose to be achieved is just to provide a kind of method for improving high yield pulp fiber flexibility, can make high obtain Rate pulp fibres remove part lignin, to improve the pliability of fiber.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions: a kind of improvement high yield pulp The method of fiber flexibility, including high yield pulp, the dense slurry of the high yield pulp is 1~3%, and the method includes following steps It is rapid:
Step 1: high yield pulp is handled by ozone, in which: the concentration 10~30% of ozone, the temperature of processing It is 30~50 DEG C, time of processing is 60~210s, and PH when processing is 2.5~4.5；
Step 2: after step 1 is handled high yield pulp pass through cellulase handle: the content of cellulase be 0.1~ 3EGU/g, processing time are 30~60min, and PH when processing is 3~6.5, and the temperature of processing is 45~60 DEG C.
Preferably, the temperature handled in step 1 is respectively 30 DEG C, 35 DEG C, 40 DEG C, 45 DEG C and 50 DEG C, the concentration of ozone 10%, time of processing is 120s, and PH when processing is 3, and the dense slurry of high yield pulp is 2%.
Preferably, it is respectively 1.5%, 2%, 2.5%, 3% and 3.5% that the slurry of high yield pulp is dense in step 1, processing Temperature is 30 DEG C, the concentration 10% of ozone, and time of processing is 120s, and PH when processing is 3.
Preferably, temperature when ozone handles high yield pulp is controlled to adjust by water-bath.
Preferably, ozone reacts high yield pulp by three hole flasks.
Preferably, cellulase reacts high yield pulp by 1000ml beaker.
Preferably, the cellulase in step 2 includes endoglucanase, exoglucanase and β-glycosidase One of or at least two mixture.
In conclusion advantages of the present invention: the high yield pulp in the present invention passes sequentially through ozone and cellulase processing, by There is lower solubility in ozone, it is made to hardly enter fibrous inside, so fiber surface is acted on first, ozonidation Attack primary wall lignin, outer layer of secondary wall and intercellular layer lignin, lignin side chain are oxidized and (take off polymerization reaction by macromolecule), virtue Ring is broken (open loop), and formation organic acid is soluble in water, with the loss of yield, primary wall and intercellular layer selectively removing lignin, Make the exposure of surface hydrophilic substance, the removal of surface lignin so that the flexibility of fiber is increased, while becomes fibre structure Loosely, therefore, fiber is handled and can opens " channel " for entering for cellulase using ozone, then, cellulase Can be with the amorphous region of hydrolysis fiber, so that hydrone enters fibrous inside, distance increases between fiber macromolecular chain, leads to fibre Deformation occurs for dimension, and stiffness by itself reduces, to promote pliability, therefore the present invention in ozone to the pretreated basis of high yield pulp Upper progress cellulase processing, increases the accessibility of cellulase and fiber, it is therefore an objective in the base for reducing cellulase dosage The fiber flexibility that can also improve that treated on plinth, be one kill two birds with one stone, the side of very promising processing high yield pulp Method secondly, ozone is as a kind of green reagent, and can improve the soft of fiber under the premise of not polluting or of low pollution environment Softness.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings:
Fig. 1 is the schematic diagram of ozone pliability at different temperatures in embodiment one；
Fig. 2 is ozone in embodiment two in the different schematic diagrames for starching dense lower pliabilitys.
Specific embodiment
A method of improve high yield pulp fiber flexibility, including high yield pulp, it is 1 that the slurry of the high yield pulp is dense~ 3%, it the described method comprises the following steps:
Step 1: high yield pulp is handled by ozone, in which: the concentration 10~30% of ozone, the temperature of processing It is 30~50 DEG C, time of processing is 60~210s, and PH when processing is 2.5~4.5；
Step 2: after step 1 is handled high yield pulp pass through cellulase handle: the content of cellulase be 0.1~ 3EGU/g, processing time are 30~60min, and PH when processing is 3~6.5, and the temperature of processing is 45~60 DEG C.
High yield pulp in the present invention passes sequentially through ozone and cellulase processing, since ozone has lower dissolution Degree, makes it hardly enter fibrous inside, so acting on fiber surface first, ozonidation attack primary wall lignin is secondary Wall outer layer and intercellular layer lignin, lignin side chain are oxidized and (take off polymerization reaction by macromolecule), and aromatic ring is broken (open loop), are formed with Machine acid is soluble in water, and with the loss of yield, primary wall and intercellular layer selectively removing lignin make the exposure of surface hydrophilic substance, The removal of surface lignin so that the flexibility of fiber is increased, while making fibre structure become loosely, therefore, to use ozone " channel " can be opened for entering for cellulase by handling fiber, and then, cellulase can be fixed with the nothing of hydrolysis fiber Shape area, so that hydrone enters fibrous inside, distance increases between fiber macromolecular chain, and leading to fiber, deformation occurs, itself is just Degree reduces, to promote pliability, therefore the present invention carries out at cellulase on the basis of ozone is pretreated to high yield pulp Reason, increases the accessibility of cellulase and fiber, it is therefore an objective to can also improve place on the basis of reducing cellulase dosage Fiber flexibility after reason, be one kill two birds with one stone, very it is promising processing high yield pulp method, secondly, ozone conduct A kind of green reagent, and the pliability of fiber can be improved under the premise of not polluting or of low pollution environment.
Temperature when ozone handles high yield pulp is controlled to adjust by water-bath, water-bath liter easy to operate Temp effect is good, can ensure that the temperature after adjusting reaches the temperature range of setting, can guarantee the constant temperature effect of temperature, and ozone is obtained to high Rate slurry is reacted by three hole flasks, convenient for the numerical value of the concentration of adjustment ozone and PH when test, and can be mutually when adjusting It is independent, the efficiency of adjusting is improved, cellulase reacts high yield pulp by 1000ml beaker, handles convenient for cellulase When stirring, improve treatment effect；The cellulase in step 2 includes endoglucanase, exoglucanase and β- One of glycosidase or at least two mixture, can be adjusted according to different high yield pulps, be able to satisfy different need It asks, practical performance is good.
Embodiment one:
A method of improving high yield pulp fiber flexibility, including high yield pulp, the slurry of the high yield pulp is dense to be 2%, it the described method comprises the following steps:
Step 1: high yield pulp is handled by ozone, in which: the temperature of processing is respectively 30 DEG C, 35 DEG C, 40 DEG C, 45 DEG C and 50 DEG C, the concentration 10% of ozone, time of processing is 120s, and PH when processing is 3, and the slurry of high yield pulp is dense to be 2%；
Step 2: high yield pulp is handled by cellulase after step 1 is handled: the content of cellulase is 0.5EGU/g, processing time are 30min, and PH when processing is 4, and the temperature of processing is 45 DEG C.
Treated, and high yield pulp carries out pliability detection, the curved line relation of pliability and treatment temperature such as Fig. 1 after detection It is shown.
Embodiment two:
A method of improving high yield pulp fiber flexibility, including high yield pulp, the slurry of the high yield pulp is dense to be 2%, it the described method comprises the following steps:
Step 1: high yield pulp is handled by ozone, in which: the temperature of processing is respectively 30 DEG C, ozone it is dense Degree 10%, time of processing are 120s, and PH when processing is 3, and the dense slurry of high yield pulp is respectively 1.5%, 2%, 2.5%, 3% With 3.5%；
Step 2: high yield pulp is handled by cellulase after step 1 is handled: the content of cellulase is 0.5EGU/g, processing time are 30min, and PH when processing is 4, and the temperature of processing is 45 DEG C.
Treated, and high yield pulp carries out pliability detection, and the curve that the slurry of the pliability and high yield pulp after detection is dense closes System is as shown in Figure 2.
In addition, step 1 ozone treatment can also be by changing the processing time of ozone concentration or ozone or the pH value of processing To handle high yield pulp.
In addition to above preferred embodiment, there are other embodiments of the invention, and those skilled in the art can be according to this Invention makes various changes and modifications, and as long as it does not depart from the spirit of the invention, should belong to appended claims of the present invention and determines The range of justice.

Claims (7)

1. a kind of method for improving high yield pulp fiber flexibility, including high yield pulp, it is 1 that the slurry of the high yield pulp is dense~ 3%, it is characterised in that: the described method comprises the following steps:
Step 1: high yield pulp is handled by ozone, in which: the concentration 10~30% of ozone, the temperature of processing are 30 ~50 DEG C, time of processing is 60~210s, and PH when processing is 2.5~4.5；
Step 2: high yield pulp is handled by cellulase after step 1 is handled: the content of cellulase is 0.1~3EGU/ G, processing time are 30~60min, and PH when processing is 3~6.5, and the temperature of processing is 45~60 DEG C.
2. a kind of method for improving high yield pulp fiber flexibility according to claim 1, it is characterised in that: in step 1 The temperature of processing is respectively 30 DEG C, 35 DEG C, 40 DEG C, 45 DEG C and 50 DEG C, the concentration 10% of ozone, and the time of processing is 120s, place PH when reason is 3, and the dense slurry of high yield pulp is 2%.
3. a kind of method for improving high yield pulp fiber flexibility according to claim 1, it is characterised in that: in step 1 The dense slurry of high yield pulp is respectively 1.5%, 2%, 2.5%, 3% and 3.5%, and the temperature of processing is 30 DEG C, the concentration of ozone 10%, time of processing is 120s, and PH when processing is 3.
4. a kind of method for improving high yield pulp fiber flexibility according to any one of claims 1 to 3, feature exist In: temperature when ozone handles high yield pulp is controlled to adjust by water-bath.
5. a kind of method for improving high yield pulp fiber flexibility according to any one of claims 1 to 3, feature exist In: ozone reacts high yield pulp by three hole flasks.
6. a kind of method for improving high yield pulp fiber flexibility according to any one of claims 1 to 3, feature exist In: cellulase reacts high yield pulp by 1000ml beaker.
7. a kind of method for improving high yield pulp fiber flexibility according to claim 1, it is characterised in that:
The cellulase in step 2 includes one of endoglucanase, exoglucanase and beta -glycosidase or extremely Few two kinds of mixture.
CN201910672286.0A 2019-07-24 2019-07-24 A method of improving high yield pulp fiber flexibility Pending CN110438835A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201910672286.0A CN110438835A (en) 2019-07-24 2019-07-24 A method of improving high yield pulp fiber flexibility
EP19219097.3A EP3770322A1 (en) 2019-07-24 2019-12-20 Method for improving fiber softness of high yield pulp
PCT/CN2019/129642 WO2021012616A1 (en) 2019-07-24 2019-12-28 Method for improving fiber softness of high-yield pulp

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CN201910672286.0A CN110438835A (en) 2019-07-24 2019-07-24 A method of improving high yield pulp fiber flexibility

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CN (1) CN110438835A (en)
WO (1) WO2021012616A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111826984A (en) * 2020-07-09 2020-10-27 天津科技大学 Method for improving softness of high-yield bamboo pulp fibers through ultrasonic-assisted ozone treatment
WO2021012616A1 (en) * 2019-07-24 2021-01-28 浙江景兴纸业股份有限公司 Method for improving fiber softness of high-yield pulp
CN112709088A (en) * 2020-11-18 2021-04-27 浙江新亚伦纸业有限公司 Production process of high-yield pulp release paper

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WO2021012616A1 (en) * 2019-07-24 2021-01-28 浙江景兴纸业股份有限公司 Method for improving fiber softness of high-yield pulp
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CN112709088A (en) * 2020-11-18 2021-04-27 浙江新亚伦纸业有限公司 Production process of high-yield pulp release paper

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WO2021012616A1 (en) 2021-01-28

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