CN100497815C - Process for biological treating collosol material by pulping paper making technology - Google Patents
Process for biological treating collosol material by pulping paper making technology Download PDFInfo
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- CN100497815C CN100497815C CNB2005100453572A CN200510045357A CN100497815C CN 100497815 C CN100497815 C CN 100497815C CN B2005100453572 A CNB2005100453572 A CN B2005100453572A CN 200510045357 A CN200510045357 A CN 200510045357A CN 100497815 C CN100497815 C CN 100497815C
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Abstract
The invention relates to collosol material biological treatment method in Kraft process paper technology. It belongs to Kraft process paper technique field. It includes the following steps: adding pectase into bleached mechanics pulp, crushed news paper deink pulp, or off-machine water; the use level of pectase is 20-160g/ ton pulp or 1.0-40g/ton off-machine water; treatment temperature is 40-80 centigrade degree; treatment time is 1h-8h; pH value is 7.0-11.0. The invention can greatly reduce mechanics pulp and waste paper pulp DCS charge demand to reduce cation polymer adding quality or cancel, increase fiber fines keeping rate and DCS adsorption, reduce production cost and gooey, and increase paper unit working capability.
Description
(1) technical field
The present invention relates to the method for collosol substance biological treatment in a kind of papermaking, be specifically related to collosol substance biologic treating technique in a kind of mechanical pulp, crushed news slurry and the plain boiled water, belong to the pulp and paper technology field.
(2) background technology
Lipophilic substance in the timber can be dispersed in the colloid that forms 0.1-1.0um size in the process water in mechanical pulp or secondary stock slurrying and bleaching, these colloids are stable under certain condition.In addition, the inorganic electrolyte that in the pulping bleaching process, also can produce a large amount of hemicelluloses, lignan (lignan), low molecular weight lignin and pectic substance and from raw material and industrial water, introduce, these materials are dissolved in the process water.Be dispersed in the lipophilicity colloidal substance in process water or the pulp-water system and be dissolved in non-cellulose material in the water be called as collosol substance (Dissolved and Colloidal Substance, DCS).These DCS materials have very high negative electrical charge, are called " anionic trash " (anionic trash).These anionic trashes cause the positive electricity requirement of paper pulp to increase.
Because production cost, there is lack of raw materials, environmental pollution problems, generally to adopt the mixed pulp of mechanical pulp and deinking slurry be that raw material is produced newsprint to the Newsprint Mill of China at present.Consider from environment and production cost aspect, require Newsprint Mill white-water system closed circulation, reduce the use and the discharge of wastewater of fresh water, from circulation plain boiled water, reclaim useful fiber and filler simultaneously, reduce production costs.But along with the raising of whitewater closure circulation degree and the increase of white water loop number of times, harmful substance in the plain boiled water is accumulation gradually also, main harmful substance is exactly DCS, the accumulation of DCS can reduce the particularly action effect of cationic auxiliary of auxiliary agent, and produce Stickies deposit a series of problems such as (pitch troubles), reduced the runnability and the product quality of paper machine.
Control for Stickies deposit at present mainly contains chemical method and bioanalysis.
Chemical method comprises dispersion, absorption or unsticking, set or retention agent, passivator etc., these methods can reduce Stickies deposit to a certain extent, but because the composition of sicker is very complicated, these methods often need to add more chemicals, be not all effective simultaneously, therefore its limitation is all arranged in actual applications any sicker.
The technology of utilizing biotechnology to solve the pitch trouble in the paper plant has obtained application in some factories.This kind method mainly contains two kinds of schemes: the one, utilize the lipase pulp treatment, and (triglyderides TG), thereby reaches the purpose of controlling pitch deposition by the hydrolysis triglyceride.The 2nd, utilize fungi to handle wood chip, by reducing the generation of resin content inhibition pitch trouble in the wood chip; Or utilize fungi to handle plain boiled water, reduce the concentration of resinous principle in the white-water system, to reduce the generation of resin deposit.
People such as Dai Wei studies show that and use esterase (Esterase) to handle secondary stock, can reduce the size of sicker, reduce the Stickies deposit problem in the waste paper recycling.Referring to people such as Dai Wei, esterase provides a kind of method of controlling sicker for the paper mill of using reclaimed fibre, paper pulp and paper, 104 (2): 28-31,2003 (David R.Jones and James W.Fitzhenry, Esterase-type enzymes offer recycled mills an alternative approach to stickies control.Pulp and Paper, 104 (2): 28-31,2003).The mixed enzyme that other has patent documentation (US) 6471826,2002 to put down in writing certain enzymes of employing and lipase can effectively be controlled the sicker in the waste paper recycling.
Laccase is also begun to be used for to study the degraded to the lipophilicity extract, people such as Si Dina are respectively from Trameteshirsute and T.billosa purification laccase and be used for process resin acid and aliphatic acid, the result shows, two kinds of laccases all can be to resin acid and fatty acid modified, after the laccase treatment, linoleic acid, oleic acid and rosin acid reduce, and the cotree resin acid reduces in the resin acid simultaneously.Referring to people such as Si Dina, the reactivity worth of laccase and aliphatic acid and resin acid, microorganism application technology, 2001,55:317-320 (Stina Karlsson, Bjarne Holmbom, Peter Spetz, al., Trametes Reactivity of Trametes laccases with fatty and resin acids.Appl MicrobiolBiotechnol.2001,55:317-320)
Pectic acid is the important material of a class among the DCS.Pectic acid mainly is at mechanical pulp H
2O
2Producing in the bleaching process, have very high negative electrical charge, is the important source of anionic trash in the bleached mechanical pulp pulp-water system.There are some researches show that pectase is handled the positive electricity requirement that can reduce mechanical pulp greatly to bleaching the back mechanical pulp, use pectase or zytase or both mixed enzyme processing machines slurry or deinking slurry can reduce the positive electricity requirement of paper pulp.We discover, the generation of sicker is to cause Stickies deposit owing to negative charge among the DCS makes the action effect reduction of cationic retention aid agent cause the absorption of DCS on fiber to weaken to a great extent.Therefore, can think, the pectic acid among the DCS is degraded, reduce the anionic trash among the DCS, improve the action effect of auxiliary agent, may be the effective way that reduces Stickies deposit.
(3) summary of the invention
The present invention mainly is the present situation that adopts deinking slurry and mechanical pulp mixed pulp to produce at present Newsprint Mill, the harm that collosol substance in paper pulp and the plain boiled water (hereinafter to be referred as DCS) brings and the deficiency of existing treatment technology, the method of collosol substance biological treatment in a kind of papermaking is provided, it specifically is DCS enzymatic treatment method in a kind of new mechanical slurry and crushed news slurry and the plain boiled water, the positive electricity requirement improves the cationic auxiliary action effect and reduces Stickies deposit in paper pulp or the plain boiled water to reduce, and the runnability of raising paper machine also improves the quality of products.
The method of collosol substance biological treatment in a kind of papermaking of the present invention, technical scheme is as follows:
Add pectase in mechanical pulp after bleaching, crushed news deinking slurry or the plain boiled water and carry out the enzyme processing, the pectase consumption is 20-160g/ ton slurry or 1.0-40g/ ton plain boiled water, 40 ℃-80 ℃ of enzyme treatment temperatures, time 1h-8h, pH7.0-11.0.
Preferably, described pectase is an alkaline pectase, and enzyme is lived and is 3000APSU.
Mechanical pulp after the described bleaching, crushed news deinking slurry are mechanical pulp or the crushed news slurries that hydrogen peroxide treatment is crossed.
The hydrogen peroxide bleaching process conditions are generally: starch dense 5%-18%, NaOH 1%-3%, Na
2SiO
32%-4%, MgSO
40.05-0.1%, ethylenediamine tetra-acetic acid (EDTA) 0.05%-0.3%, 40 ℃-80 ℃ of temperature, time 2h-4h.All be weight percentage.
Described plain boiled water comprises process water and the paper machine machine water in the pulping and paper-making production.
Described mechanical pulp is thermomechanical pulp (TMP), CTMP (CTMP) or ground wood pulp (GP).
The preparation of described crushed news deinking slurry can be adopted prior art.The invention provides following method:
(1) size degradation of crushed news: be the surfactant that in the pulper that crushed news and water are housed, adds 0.1%-2.0%, process conditions: NaOH 0.5%-3.0%, Na
2SiO
30.5%-4.0%, H
2O
20.5%-2.0%, diethylamine tetraacethyl (EDTA) 0.04%-0.4%, starch dense 4%-20%, 30 ℃-75 ℃ of temperature, pulping time 10-40min.Below all be weight percentage.
Above-mentioned surfactant is selected from one of sodium soap, neopelex, lauryl sodium sulfate, fatty alcohol-polyoxyethylene ether, polyoxyethylene nonylphenol ether, sorbitan monostearate, polyoxyethylene 20 sorbitan monooleate or their combination.
(2) flotation: carry out in flotation cell, it is dense 1% that the slurry behind the size degradation is diluted to slurry, and the control throughput is 7-28m
3/ h, pressure is 0.1-1.0MPa, flotation 5-30min under the normal temperature.
(3) washing: the paper pulp after will diluting is diluted to the concentration of 0.2%-0.5%, advances by 80 purpose copper mesh
The row washing.Obtain crushed news deinking slurry.
The paper pulp that method of the present invention was handled is the deinking mass suspension centrifugal 30-40min under 2000-2200rpm after enzyme is handled during with the paper pulp contrast experiment that handles without enzyme, and the material in the supernatant liquor is collosol substance (DCS).
Compared with prior art, excellent results of the present invention is as follows:
With adopt a large amount of cationic polymers in the present production and compare with the method for DCS negative charge in mechanical pulp and the secondary stock in coming, adopt pectase pulp treatment or plain boiled water, can reduce their positive electricity requirement significantly, thereby the addition of cationic polymer or cancel the adding of this cationoid polymer in reduce producing greatly, having improved the rate of keeping here and the absorption of DCS on fiber of fiber fines keeps, reduce production costs, reduce the generation of sicker, improve the maneuverability of paper machine.
(4) specific embodiment
Used pectase is letter (novozymes) company of Novi and produces alkaline pectase among the following embodiment, and enzyme is lived and is 3000APSU.
Embodiment 1:
1, the preparation of crushed news deinking slurry:
The size degradation of crushed news is the surfactant of adding 1.0% in the pulper that U.S. 8# crushed news and water are housed, other conditions: NaOH 1.0%, Na
2SiO
32.0%, H
2O
21.0%, ethylenediamine tetra-acetic acid (EDTA) 0.1%, starch dense 4%-20%, 30 ℃-75 ℃ of temperature, pulping time 10-40min.Below all be weight percentage.
Flotation is carried out in flotation cell, and it is dense 1% that the slurry behind the size degradation is diluted to slurry, and the control throughput is 7-28m3/h, and pressure is 0.1-1.0MPa, flotation 5-30min under the normal temperature.
Paper pulp after the dilution is diluted to the concentration of 0.2%-0.5%, washs by 80 purpose copper mesh.
2, hydrogen peroxide bleaching
Paper pulp after the above-mentioned washing is carried out hydrogen peroxide bleaching, and process conditions are: starch densely 5%-18%, NaOH 2%, Na
2SiO
32%, MgSO
40.05%, ethylenediamine tetra-acetic acid (EDTA) 0.2%, 40 ℃-80 ℃ of temperature, time 2h-4h.All be weight percentage.
3, enzyme is handled
To adding pectase in the crushed news deinking slurry after the bleaching, treatment process is: pectase 80g/ ton slurry, starch dense 2%-20%, 40 ℃-60 ℃ of temperature, time 2h-6h, pH8.0-10.0.
Deinking mass suspension centrifugal 30min under 2000rpm after enzyme is handled, supernatant liquor is DCS, compares with the paper pulp of handling without enzyme, the positive electricity requirement of DCS has reduced by 50%.When polymine (PEI) is 2.0g/g, during cationic polyacrylamide (CPAM) 0.4g/g, the retention of fiber fines improves 15%.Utilize the weight that adopts porous net rotor method to measure sicker, compare with the paper pulp of not handling with enzyme, paper pulp Stickies deposit amount after enzyme is handled reduces 10%-40%.
Embodiment 2:
CTMP (CTMP) after the bleaching is carried out enzyme handle, treatment process is: enzyme dosage 80g/ ton slurry, 40 ℃-60 ℃ of temperature, time 2h-6h, pH8.0-10.0.
Mechanical pulp suspension centrifugal 30min under 2000rpm after enzyme is handled, supernatant liquor is DCS, compare with the paper pulp DCS that handles without enzyme, the positive electricity requirement reduces by 40%, when polymine (PEI) addition is 2.0g/g, when cationic polyacrylamide (CPAM) addition was 0.4g/g, the retention of fiber fines improved 20%, and Stickies deposit reduces 10%-40%.
Embodiment 3:
Use the Newsprint Mill reuse plain boiled water of crushed news deinking slurry and CTMP mixed pulp to carry out the enzyme processing, treatment process is: enzyme dosage 20g/ ton water, 40 ℃-60 ℃ of temperature, time 2h-8h, pH8.0-10.0.
The positive electricity requirement of plain boiled water reduces by 50% after enzyme is handled, and can make Stickies deposit reduce 10%-40% simultaneously.
Embodiment 4: as described in embodiment 1, different is that crushed news is Japanese crushed news.
Embodiment 5: as described in embodiment 1, the addition of different is pectase is a 40g/ ton slurry.
Embodiment 6: as described in embodiment 2, different is that the pectase addition is 120g/ ton slurry.
Embodiment 7: as described in embodiment 2, different is the thermomechanical pulp (TMP) of paper pulp for bleaching that enzyme is handled.
Embodiment 8: as described in embodiment 2, different is the ground wood pulp (GP) of paper pulp for bleaching that enzyme is handled.
Claims (2)
1, the method for collosol substance biological treatment in a kind of papermaking, it is characterized in that, add alkaline pectase in crushed news deinking slurry after bleaching or the plain boiled water and carry out the enzyme processing, enzyme is lived and is 3000APSU, the pectase consumption is 20-160g/ ton slurry or 1.0-40g/ ton plain boiled water, 40 ℃-60 ℃ of temperature, time 1h-8h, pH8.0-10.0;
Described bleaching back crushed news deinking slurry is that the crushed news that hydrogen peroxide bleaching was handled is starched, and wherein the process conditions of hydrogen peroxide bleaching are: starch dense 5%-18%, NaOH 1%-3%, Na
2SiO
32%-4%, MgSO
40.05-0.1%, ethylenediamine tetra-acetic acid (EDTA) 0.05%-0.3%, 40 ℃-80 ℃ of temperature, time 2h-4h all is weight percentage.
2, the method for collosol substance biological treatment in the papermaking as claimed in claim 1 is characterized in that, described plain boiled water comprises process water and the paper machine machine water in the production of crushed news slurry pulping and paper-making.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100453572A CN100497815C (en) | 2005-12-14 | 2005-12-14 | Process for biological treating collosol material by pulping paper making technology |
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| CN100497815C true CN100497815C (en) | 2009-06-10 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551364B (en) * | 2009-05-14 | 2011-12-14 | 华南理工大学 | Method for measuring micro stickies in paper pulp slurry and uses thereof |
| CN102115995B (en) * | 2010-12-17 | 2012-05-23 | 山东轻工业学院 | Silicon oil paper dissociation agent and dissociation process thereof |
| CN103061183A (en) * | 2012-11-01 | 2013-04-24 | 福建省晋江优兰发纸业有限公司 | Pulping process of waste paper deinking pulp for furnishing high-grade printing paper |
| CN106432372B (en) * | 2016-09-29 | 2020-02-07 | 齐鲁工业大学 | Biological treatment method of wood fiber hydrolysate |
| CN110327840A (en) * | 2019-03-11 | 2019-10-15 | 湖北文理学院 | A kind of environment protection type paper compound emulsifying agent and preparation method thereof |
| CN112301780A (en) * | 2020-09-18 | 2021-02-02 | 江苏理文造纸有限公司 | Anionic garbage control process for papermaking system |
| CN114105402A (en) * | 2021-10-22 | 2022-03-01 | 江苏理文造纸有限公司 | Papermaking white water anion garbage control process |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shandong Century Sunshine Paper Group Co., Ltd. Assignor: Shandong Institute of Light Industry Contract fulfillment period: 2009.11.6 to 2015.11.6 Contract record no.: 2010370000026 Denomination of invention: Process for biological treating collosol material by pulping paper making technology Granted publication date: 20090610 License type: Exclusive license Record date: 2010.1.12 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.11.6 TO 2015.11.6; CHANGE OF CONTRACT Name of requester: SHANDONG CENTURY SUNSHINE PAPER HOLDINGS GROUP CO. Effective date: 20100112 |
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| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Shandong Century Sunshine Paper Group Co., Ltd. Assignor: Shandong Institute of Light Industry Contract record no.: 2010370000026 Date of cancellation: 20100730 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Nine Dragons Paper (Taicang) Co., Ltd. Assignor: Shandong Institute of Light Industry Contract record no.: 2012320010017 Denomination of invention: Process for biological treating collosol material by pulping paper making technology Granted publication date: 20090610 License type: Exclusive License Open date: 20060614 Record date: 20120221 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090610 Termination date: 20171214 |