CN106988141A - A kind of method that utilization biology enzyme improves Pulp Drainage Properties - Google Patents
A kind of method that utilization biology enzyme improves Pulp Drainage Properties Download PDFInfo
- Publication number
- CN106988141A CN106988141A CN201710213491.1A CN201710213491A CN106988141A CN 106988141 A CN106988141 A CN 106988141A CN 201710213491 A CN201710213491 A CN 201710213491A CN 106988141 A CN106988141 A CN 106988141A
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- CN
- China
- Prior art keywords
- cellulase solution
- exoglucanase
- slurry
- drainage properties
- forebay
- Prior art date
- 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.)
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Classifications
-
- 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
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
-
- 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
- D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
The present invention relates to a kind of method that utilization biology enzyme improves Pulp Drainage Properties, by adding cellulase solution in forebay in kowtowing for stock tank after slurrying long fibre kowtows forebay, chopped fiber heat partition and starch adhesive line, the aqueous colloidal material in slurry is optionally handled using cellulase solution, slurry is improved in wet end and the removal efficiency of press section free water, drainage effect can be improved to more than 5 times；Cellulase solution is used for a long time, the aqueous colloidal material in slurry can be reduced, paste system is cleaned, wet-end chemicals consumption is reduced, while can also extend the service life of forming net, woollen blanket.
Description
Technical field
Improve the method for Pulp Drainage Properties the present invention relates to pulp technology for making paper, more particularly to a kind of utilization biology enzyme.
Background technology
With the increasing reuse of intermediate water of papermaking, wet end of machine system is more closed, the water solubility accumulated in plain boiled water
Colloidal substance gradually increases, these colloidal substances meeting inhibition of pulp drainage, reduces Drainage efficiency, causes dehydration difficult, go out wet end
Mass dryness fraction is relatively low, and steam economy is big, constrains the lifting of paper machine speed.Paper and cardboard are the aqueous slurry lifes by cellulose fibre
Production, by the paste deposition on mobile wire-cloth or fabric, and by filtering equipment dewater treatment, the scraps of paper are carried out
Suppress and dry further to go water removal, membrane pressure filter is commonly used at present to slurry progress filter-press dehydration, but be due to water-soluble
Property colloidal substance easily block filter cloth, the filter cloth replacing frequency is high, generally 10 ~ 15/hundred tons slurries.Fibre stuff is in wire-cloth or knits
Drainage or dehydration on thing often realize the conditioning step of faster paper machine speed.Improved dehydration can also suppressed and done
The drier scraps of paper are obtained in dry section, so as to reduce energy expenditure.Before fibre stuff reaches wire-cloth or fabric often
Addition chemicals is retained with improving drainage/dehydration and solid thereto；In wet end largely using chemicals to forming net, woollen blanket
Service life can be impacted.
The content of the invention
The present invention is in view of the deficienciess of the prior art, improve the side of Pulp Drainage Properties there is provided a kind of utilization biology enzyme
Method, concrete technical scheme is as follows：
A kind of method that utilization biology enzyme improves Pulp Drainage Properties, is starched after slurrying long fibre kowtows forebay, chopped fiber heat partition
Pond and kowtowing for starch adhesive line add cellulase solution in forebay, the addition of cellulase solution is 0.1 ~ 0.25kg/ tons of paper, is added
The reaction temperature of point is 55 ~ 65 DEG C, and the pH value of addition point is 6.5 ~ 7.0, and the slurry concentration of addition point is 3.5 ~ 4.5%, during reaction
Between be 60 ~ 70min.
As the improvement of above-mentioned technical proposal, the composition and percentage by weight of the cellulase solution be, endo-glucanase
Enzyme 20 ~ 22%, exoglucanase 20 ~ 22%, cellobiase 10 ~ 11%, sophorolipid 3 ~ 3.8%, hydroxypropyl methyl cellulose 6.2
~ 7.4%, water complements to 100%.
As the improvement of above-mentioned technical proposal, in the cellulase solution, endoglucanase, exoglucanase,
Mass ratio between cellobiase is 2:2:1.
As the improvement of above-mentioned technical proposal, the preparation method of the cellulase solution is that will contain endoglucanase
Endo-glucanase enzyme preparation, the exoglucanase preparation containing exoglucanase, the fiber two containing cellobiase
After carbohydrase preparation, sophorolipid, hydroxypropyl methyl cellulose and water are according to proportioning mixing, vibrated in ultrasound reactor with 80Hz
Ultrasonic disperse produces the cellulase solution in 10 ~ 15 minutes at frequency and 35 ~ 40 DEG C.
Beneficial effects of the present invention：Pass through the stock tank after slurrying long fibre kowtows forebay, chopped fiber heat partition and starch adhesive line
Kowtow and cellulase solution is added in forebay, the aqueous colloidal material in slurry is optionally handled using cellulase solution, is carried
High slurry is in wet end and the removal efficiency of press section free water, and drainage effect can be improved to more than 5 times；Cellulase solution has spy
Different selectivity and high efficiency, improve wet end dehydrating effect while there is no any damage to the fiber in slurry, into
The indices and paper pulp yield of product paper are also without any influence；Cellulase solution is used for a long time, can reduce in slurry
Aqueous colloidal material, cleans paste system, reduces wet-end chemicals consumption, while can also extend forming net, woollen blanket makes
Use the life-span.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1
By the endo-glucanase enzyme preparation containing endoglucanase, the exoglucanase preparation containing exoglucanase,
After cellobiose enzyme preparation, sophorolipid, hydroxypropyl methyl cellulose and water containing cellobiase are according to proportioning mixing, super
Cellulase solution is produced in 10 minutes with ultrasonic disperse at 80Hz vibration frequencies and 35 ~ 40 DEG C in sound wave reactor；Wherein, the fibre
The main component and percentage by weight of the plain enzyme liquid of dimension be：Endoglucanase 20%, exoglucanase 20%, cellobiase
10%, sophorolipid 3%, hydroxypropyl methyl cellulose 7%.
Cellulase is added in forebay in kowtowing for stock tank after slurrying long fibre kowtows forebay, chopped fiber heat partition and starch adhesive line
Liquid, the addition of cellulase solution is 0.25kg/ ton paper, and the reaction temperature of addition point is 55 DEG C, the pH value of addition point is 6.5 ~
7.0, the slurry concentration of addition point is 3.5 ~ 4.5%, and the reaction time is 60min.The slurry in forebay is kowtowed by cellulase solution
After reason, filter-press dehydration is carried out to slurry using membrane pressure filter, cellulase solution optionally handles the water solubility in slurry
Colloidal substance, can reduce the colloidal substance in slurry, and the effect of the drainage of membrane pressure filter is significantly improved, diaphragm type press filtration
Filter cloth in machine is not easily blocked, and the filter cloth replacing frequency is significantly reduced, generally 2 ~ 3/hundred tons slurries.
Embodiment 2
By the endo-glucanase enzyme preparation containing endoglucanase, the exoglucanase preparation containing exoglucanase,
After cellobiose enzyme preparation, sophorolipid, hydroxypropyl methyl cellulose and water containing cellobiase are according to proportioning mixing, super
Cellulase solution is produced in 13 minutes with ultrasonic disperse at 80Hz vibration frequencies and 35 ~ 40 DEG C in sound wave reactor；Wherein, the fibre
The main component and percentage by weight of the plain enzyme liquid of dimension be：Endoglucanase 21%, exoglucanase 21%, cellobiase
10.5%, sophorolipid 3.6%, hydroxypropyl methyl cellulose 7.4%.
Cellulase is added in forebay in kowtowing for stock tank after slurrying long fibre kowtows forebay, chopped fiber heat partition and starch adhesive line
Liquid, the addition of cellulase solution is 0.2kg/ ton paper, and the reaction temperature of addition point is 60 DEG C, the pH value of addition point is 6.5 ~
7.0, the slurry concentration of addition point is 3.5 ~ 4.5%, and the reaction time is 65min.The slurry in forebay is kowtowed by cellulase solution
After reason, filter-press dehydration is carried out to slurry using membrane pressure filter, cellulase solution optionally handles the water solubility in slurry
Colloidal substance, can reduce the colloidal substance in slurry, and the effect of the drainage of membrane pressure filter is significantly improved, diaphragm type press filtration
Filter cloth in machine is not easily blocked, and the filter cloth replacing frequency is significantly reduced, generally 3 ~ 4/hundred tons slurries.
Embodiment 3
By the endo-glucanase enzyme preparation containing endoglucanase, the exoglucanase preparation containing exoglucanase,
After cellobiose enzyme preparation, sophorolipid, hydroxypropyl methyl cellulose and water containing cellobiase are according to proportioning mixing, super
Cellulase solution is produced in 15 minutes with ultrasonic disperse at 80Hz vibration frequencies and 35 ~ 40 DEG C in sound wave reactor；Wherein, the fibre
The main component and percentage by weight of the plain enzyme liquid of dimension be：Endoglucanase 22%, exoglucanase 22%, cellobiase
11%, sophorolipid 3.8%, hydroxypropyl methyl cellulose 6.2%.
Cellulase is added in forebay in kowtowing for stock tank after slurrying long fibre kowtows forebay, chopped fiber heat partition and starch adhesive line
Liquid, the addition of cellulase solution is 0.1kg/ ton paper, and the reaction temperature of addition point is 65 DEG C, the pH value of addition point is 6.5 ~
7.0, the slurry concentration of addition point is 3.5 ~ 4.5%, and the reaction time is 70min.The slurry in forebay is kowtowed by cellulase solution
After reason, filter-press dehydration is carried out to slurry using membrane pressure filter, cellulase solution optionally handles the water solubility in slurry
Colloidal substance, can reduce the colloidal substance in slurry, and the effect of the drainage of membrane pressure filter is significantly improved, diaphragm type press filtration
Filter cloth in machine is not easily blocked, and the filter cloth replacing frequency is significantly reduced, generally 5 ~ 6/hundred tons slurries.
In the above-described embodiments, in the cellulase solution, strictly control endoglucanase, exoglucanase,
Mass ratio between cellobiase is 2:2:1, the enzyme activity of the cellulase solution is improved, sophorolipid is a kind of glycolipid class life
Thing surfactant, it has the versatility such as the solubilising that conventional surfactants have, wetting, scattered, reduction surface tension
Can, but also with nontoxic, 100% biodegradable, heatproof, resistance to high salt, adapt to the characteristics such as PH scopes are wide and environmentally friendly,
The performance of paper in itself is not interfered with containing sophorolipid in follow-up paper, sophorolipid also has the enzyme activity for improving cellulase solution
The effect of power, promotes the degraded of cellulose so that the aqueous colloidal content of material in slurry is significantly reduced, and Drainage efficiency is notable
Improve.Hydroxypropyl methyl cellulose be the gossypin of high purity as raw material, made in the basic conditions through special etherificate
；Although endoglucanase, exoglucanase, cellobiase will not be catalyzed hydroxypropyl methyl cellulose degraded,
It has thermal gels property, and forming gel after the heating of the product aqueous solution separates out, and has the spies such as resistance to enzymatic and caking property along with it
Point so that endoglucanase, exoglucanase, cellobiase are easily adsorbed by hydroxypropyl methyl cellulose and form colloid
Particle, the colloidal solid is easily combined with the colloidal substance in water, using the colloidal solid as reaction media, promotes endo-glucanase
Enzyme, exoglucanase, cellobiose enzymic catalytic reaction, help speed up reaction process.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (4)
1. a kind of method that utilization biology enzyme improves Pulp Drainage Properties, it is characterised in that：Forebay, short fibre are kowtowed in slurrying long fibre
Stock tank and kowtowing for starch adhesive line add cellulase solution after dimension heat partition in forebay, the addition of cellulase solution for 0.1 ~
0.25kg/ tons of paper, the reaction temperature of addition point is 55 ~ 65 DEG C, and the pH value of addition point is 6.5 ~ 7.0, the slurry concentration of addition point
For 3.5 ~ 4.5%, the reaction time is 60 ~ 70min.
2. a kind of utilization biology enzyme according to claim 1 improves the method for Pulp Drainage Properties, it is characterised in that：It is described
The composition and percentage by weight of cellulase solution be, endoglucanase 20 ~ 22%, exoglucanase 20 ~ 22%, cellobiose
Enzyme 10 ~ 11%, sophorolipid 3 ~ 3.8%, hydroxypropyl methyl cellulose 6.2 ~ 7.4%, water complements to 100%.
3. a kind of utilization biology enzyme according to claim 2 improves the method for Pulp Drainage Properties, it is characterised in that：Institute
State in cellulase solution, the mass ratio between endoglucanase, exoglucanase, cellobiase is 2:2:1.
4. a kind of utilization biology enzyme according to claim 3 improves the method for Pulp Drainage Properties, it is characterised in that：It is described
The preparation method of cellulase solution is by the endo-glucanase enzyme preparation containing endoglucanase, to contain exoglucanase
Exoglucanase preparation, cellobiose enzyme preparation, sophorolipid, hydroxypropyl methyl cellulose and water containing cellobiase
After proportioning mixing, produced within 10 ~ 15 minutes with ultrasonic disperse at 80Hz vibration frequencies and 35 ~ 40 DEG C in ultrasound reactor
The cellulase solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710213491.1A CN106988141A (en) | 2017-04-01 | 2017-04-01 | A kind of method that utilization biology enzyme improves Pulp Drainage Properties |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710213491.1A CN106988141A (en) | 2017-04-01 | 2017-04-01 | A kind of method that utilization biology enzyme improves Pulp Drainage Properties |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106988141A true CN106988141A (en) | 2017-07-28 |
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ID=59415928
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710213491.1A Withdrawn CN106988141A (en) | 2017-04-01 | 2017-04-01 | A kind of method that utilization biology enzyme improves Pulp Drainage Properties |
Country Status (1)
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| CN (1) | CN106988141A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086420A (en) * | 2021-12-13 | 2022-02-25 | 德州泰鼎新材料科技有限公司 | Method for deep chemical treatment of papermaking wastewater sludge and use method |
-
2017
- 2017-04-01 CN CN201710213491.1A patent/CN106988141A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114086420A (en) * | 2021-12-13 | 2022-02-25 | 德州泰鼎新材料科技有限公司 | Method for deep chemical treatment of papermaking wastewater sludge and use method |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170728 |