CN104088193A - Processing method for papermaking pulp and papermaking pulp - Google Patents
Processing method for papermaking pulp and papermaking pulp Download PDFInfo
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- CN104088193A CN104088193A CN201410329002.5A CN201410329002A CN104088193A CN 104088193 A CN104088193 A CN 104088193A CN 201410329002 A CN201410329002 A CN 201410329002A CN 104088193 A CN104088193 A CN 104088193A
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Abstract
The invention discloses a processing method for papermaking pulp and the papermaking pulp. The processing method for the papermaking pulp comprises the following steps: pre-processing a starch raw material to obtain a first starch solution with the concentration of 30-40%; diluting the first starch solution by a water bath method and raising the temperature to obtain a second starch solution which contains starch balls with different grain diameters after being swollen, wherein the starch balls are round and intact starch balls which have the grain diameters being more than 20 microns; and adding the second starch solution into a mixing pulp tank of a papermaking wet end system, wherein the addition amount of the second starch solution is 1.0-10kg/ton of the oven dry stock; and mixing to obtain the papermaking pulp. With the adoption of the processing method, the strength and the thickness of paper sheets can be simultaneously improved.
Description
Technical field
The present invention relates to field of papermaking, particularly relate to a kind of processing method and paper making pulp of paper making pulp.
Background technology
In field of papermaking, because filler unit price is far below slurry, conventionally adopt to promote pulp strength or increase the means such as dry strength agent consumption and reach the object that promotes paper strength entirety, expand space for promoting greyness of paper content, therefore the lifting of paper strength can effectively make up the loss that causes paper strength because of ash content lifting.So, although can maintain paper strength, can cause the paper microstructure phenomenon of " caving in ", paper density becomes large, and the thickness of the identical grammes per square metre paper that makes to manufacture paper with pulp is obviously on the low side, thereby possibly cannot meet the needs that processing and terminal client are used after paper.
For addressing the above problem, conventionally the measure of taking is to promote paper sheet thickness by significantly promoting the mechanical pulp that bulk is higher, but mechanical pulp exists the shortcomings such as the on the low side and fibre bundle content height of pulp strength, its addition causes disconnected paper or system to seize up compared with Gao Shiyi simultaneously.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of processing method and paper making pulp of paper making pulp, can improve intensity and the thickness of paper simultaneously.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of processing method of paper making pulp is provided, and described method comprises: starch material is carried out to pre-treatment and obtain the first starch solution that concentration is 30-40%; By immersion method, described the first starch solution diluted and heated up, obtaining the second starch solution containing different-grain diameter starch ball after swollen, described starch ball is that particle diameter is greater than 20 microns of mellow and full and uncracked starch spheroids; Described the second starch solution is added in papermaking green end system blending chest and is mixed to get paper making pulp with the amount of 1.0-10kg/ ton oven dry stock.
Wherein, described method also comprises: the amount with 0.1-1kg/ ton oven dry stock in the paper making pulp in described blending chest exit is added sticking agent mixing and stirring.
Wherein, described sticking agent is cationic polyacrylamide, at least one in anionic polyacrylamide, acrylamide copolymer, daiamid epoxy chloropropane and polyacrylamide-glyoxal polymer.
Wherein, described starch material is ative starch or modified starch.
Wherein, described modified starch is at least one in the derivative compound of cationic starch, amphoteric starch and modified starch.
Wherein, in the time that described starch material is ative starch, describedly starch material is carried out to pre-treatment to obtain concentration be that the step of the first starch solution of 30-40% comprises: use 40-50 DEG C of clear water that described starch material is brewed to solution, synchronous alkali lye and the etherifying agent stirring reaction of adding in brew process, the over dry addition of described alkali lye is 1-10kg/ ton over dry starch, the over dry addition of described etherifying agent is 1-10kg/ ton over dry alkali, described pH control after brewed is 10-12, the described stirring reaction time is 8-12 hour, after reaction, regulate pH to 6-8 to obtain described the first starch solution that concentration is 30-40% by acid solution, in the time that described starch material is modified starch, describedly starch material is carried out to pre-treatment to obtain concentration be that the step of the first starch solution of 30-40% comprises: use 40-50 DEG C of clear water by described starch material to be brewed to concentration be 30-40% solution stirring reaction 1-2 hour described the first starch solution.
Wherein, described alkali lye is at least one in NaOH, potassium hydroxide, sodium bicarbonate and magnesium hydroxide; Described etherifying agent is at least one of cationic etherifying agent and both sexes etherifying agent; Described acid solution is at least one of hydrochloric acid, sulfuric acid and citric acid.
Wherein, the concentration of described alkali lye is 5-10%.
Wherein, describedly by immersion method, described the first starch solution is diluted and heated up, obtain after swollen comprising containing the step of the second starch solution of different-grain diameter starch ball: to passing in the same way hot water in described the first starch solution pipeline, described the first starch solution is diluted to 10-12% by the built-in blow-off pipe of oblique cutting, and be warming up to 40-80 DEG C, obtain the second starch solution containing different-grain diameter starch ball after swollen.
For solving the problems of the technologies described above, provided by the invention also have a technical scheme to be: a kind of paper making pulp is provided, and described paper making pulp is obtained by above disposal methods.
The invention has the beneficial effects as follows: the situation that is different from prior art, the present invention is by carrying out starch after appropriate swollen PROCESS FOR TREATMENT, obtain the starch ball that a large amount of grain sizes are greater than 20 microns, starch ball is added in blending chest, so that starch ball is filled in the gap of paper microstructure, play the bonding between paper internal fiber and filler and the swollen effect of support, promote thereby obtain the two of paper strength and thickness simultaneously.
Brief description of the drawings
Fig. 1 is the flow chart of the processing method of the paper making pulp that provides of the embodiment of the present invention.
Detailed description of the invention
Refer to Fig. 1, Fig. 1 is the flow chart of the processing method of a kind of paper making pulp of providing of the embodiment of the present invention, and in the present embodiment, the processing method of paper making pulp comprises the following steps:
S101: starch material is carried out to pre-treatment and obtain the first starch solution that concentration is 30-40%;
In the embodiment of the present invention, by starch, after swollen is processed, grain size is greater than 20 microns of mellow and full and uncracked starch spheroids and is called starch ball.
Here starch material is ative starch or modified starch.Wherein, modified starch can be at least one in the derivative of cationic starch, amphoteric starch and modified starch.
In the time that starch material is ative starch, starch material is carried out to pre-treatment, and to obtain concentration be that the step of the first starch solution of 30-40% comprises:
Use 40-50 DEG C of clear water that starch material is brewed to solution, synchronous alkali lye and the etherifying agent stirring reaction of adding in brew process, the over dry addition of alkali lye is 1-10kg/ ton over dry starch, the over dry addition of etherifying agent is 1-10kg/ ton over dry alkali, pH control after brewed is 10-12, the stirring reaction time is 8-12 hour, after reaction, regulates pH to 6-8 to obtain the first starch solution that concentration is 30-40% by acid solution.
Wherein, the alkali lye here can be at least one of NaOH, potassium hydroxide, sodium bicarbonate and magnesium hydroxide.Etherifying agent can be at least one of cationic etherifying agent and both sexes etherifying agent.Acid solution can be at least one of hydrochloric acid, sulfuric acid and citric acid.
Wherein, the concentration of alkali lye is 5-10%.
In the time that starch material is modified starch, starch material is carried out to pre-treatment, and to obtain concentration be that the step of the first starch solution of 30-40% comprises:
Use 40-50 DEG C of clear water that starch material is brewed to concentration for 30-40% solution and within stirring reaction 1-2 hour, obtains the first starch solution.
S102: by immersion method, the first starch solution diluted and heated up, obtaining the second starch solution containing different-grain diameter starch ball after swollen;
The immersion method here dilutes the first starch solution heat up, and the step that obtains the second starch solution comprises:
In the first starch solution pipeline, pass in the same way hot water by the built-in blow-off pipe of oblique cutting, the first starch solution is diluted to 10-12%, and be warming up to 40-80 DEG C, obtain the second starch solution containing different-grain diameter starch ball after swollen.The ratio of starch ball can reach 70-95%.
S103: the second starch solution is added in papermaking green end system blending chest and is mixed to get paper making pulp with the amount of 1.0-10kg/ ton oven dry stock.
The second starch solution containing different-grain diameter starch ball after swollen is added in green end system blending chest, through being mixed to get paper making pulp.
The processing method of above paper making pulp, by starch being carried out after appropriate swollen PROCESS FOR TREATMENT, obtain the starch ball that a large amount of grain sizes are greater than 20 microns, starch ball is added in blending chest, so that starch ball is filled in the gap of paper microstructure, play the bonding between paper internal fiber and filler and the swollen effect of support, promote thereby obtain the two of paper strength and thickness simultaneously.
Please continue to refer to Fig. 1, in another embodiment, the processing method of waste stuff of the present invention can also comprise:
S104: the amount with 0.1-1kg/ ton oven dry stock in the paper making pulp in blending chest exit is added sticking agent mixing and stirring.
In order to improve the retention of starch ball in paste system, add sticking agent in the stock pump porch in blending chest exit, wherein the addition of sticking agent is 0.1-1kg/ ton oven dry stock.
In the embodiment of the present invention, sticking agent can be cationic polyacrylamide, at least one in anionic polyacrylamide, acrylamide copolymer, daiamid epoxy chloropropane and polyacrylamide-glyoxal polymer.
It is more than the detailed description of the processing method of the waste stuff that provides of the embodiment of the present invention, be appreciated that, the processing method of paper making pulp of the present invention, by starch being carried out after appropriate swollen PROCESS FOR TREATMENT, obtain the starch ball that a large amount of grain sizes are greater than 20 microns, starch ball is added in blending chest, so that starch ball is filled in the gap of paper microstructure, play the bonding between paper internal fiber and filler and the swollen effect of support, promote thereby obtain the two of paper strength and thickness simultaneously.And in the paper making pulp obtaining, further add sticking agent, be conducive to the retention of starch ball in paper making pulp, further promote paper strength and thickness.
On the basis of the processing method of the paper making pulp providing above, the invention provides a kind of paper making pulp, this paper making pulp is to obtain through the disposal methods of above-described embodiment.
For the processing method of paper making pulp of the present invention is described in further detail; below in conjunction with several specific embodiments; this processing method is further elaborated, but these are all the preferred embodiments of the present invention, not in order to limit the protection domain of requirement of the present invention:
Embodiment 1～6:
Starch material: select ative starch, obtain the raw material of " starch ball " as the embodiment of the present invention; Alkali lye: selecting concentration is 32% NaOH; Etherifying agent: select cationic etherifying agent; Acid solution: select citric acid; Sticking agent: select cationic polyacrylamide.
Utilize the starch solution of 40～50 DEG C of warm clear water brewed 30～40%, synchronously add alkali lye (1～10kg/ ton starch) and etherifying agent (1～10kg/ ton alkali) swollen starch granules, the pH value of starch solution is 10～12, mix rear stirring reaction 8～12h, add appropriate acid solution cessation reaction, its pH value is 6～8 again; Starch is carried out to concentration dilution (concentration dilution to 10～12%) and intensification swollen (starch fluid temperature rises to 40～80 DEG C) Duplex treatment by the hot water of co-flow more simultaneously, obtain 70～95% " starch ball "; The starch fluid that contains 70～95% " starch balls " after swollen is sneaked into blending chest, add " starch ball " sticking agent 0.1～1kg/ ton slurry in the stock pump porch in blending chest exit simultaneously, improve " starch ball " retention at paste system.
Embodiment 7～11:
Starch material: select cationic starch, obtain the raw material of " starch ball " as the embodiment of the present invention; Sticking agent: select acrylamide copolymer.
Utilize the starch solution of 40～50 DEG C of warm clear water brewed 30～40%, mix rear stirring swollen reaction 1h; Starch is carried out to concentration dilution (concentration dilution to 10～12%) and intensification swollen (starch fluid temperature rises to 40～80 DEG C) Duplex treatment by the hot water of co-flow more simultaneously, obtain 70～95% " starch ball "; The starch fluid that contains 70～95% " starch balls " after swollen is sneaked into blending chest, add " starch ball " sticking agent 0.1～1kg/ ton slurry in the stock pump porch in blending chest exit simultaneously, improve " starch ball " retention at paste system.
Wherein, the concrete material consumption proportion of above each embodiment and institute's papermaking are opened Contrast on effect and are referred to following table 1:
Table 1: material consumption proportion and the Contrast on effect of each embodiment
Continued 1
By the Contrast on effect of above each embodiment, can know, the manufacture paper with pulp paper strength and the thickness that obtain of the paper making pulp obtaining by disposal methods of the present invention is all improved.
The processing method of the paper making pulp of the above embodiment of the present invention, by papermaking green end is carried out forming the gap that particle diameter is greater than " starch ball " filling what paper microstructure of 20 μ m after swollen PROCESS FOR TREATMENT with starch granules, play the bonding between paper internal fiber and filler and the swollen effect of support, promote thereby obtain the two of paper strength and thickness simultaneously.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a processing method for paper making pulp, is characterized in that, described method comprises:
Starch material is carried out to pre-treatment and obtain the first starch solution that concentration is 30-40%;
By immersion method, described the first starch solution diluted and heated up, obtaining the second starch solution containing different-grain diameter starch ball after swollen, described starch ball is that particle diameter is greater than 20 microns of mellow and full and uncracked starch spheroids;
Described the second starch solution is added in papermaking green end system blending chest and is mixed to get paper making pulp with the amount of 1.0-10kg/ ton oven dry stock.
2. processing method according to claim 1, is characterized in that, described method also comprises:
Amount with 0.1-1kg/ ton oven dry stock in the paper making pulp in described blending chest exit is added sticking agent mixing and stirring.
3. processing method according to claim 2, it is characterized in that, described sticking agent is cationic polyacrylamide, at least one in anionic polyacrylamide, acrylamide copolymer, daiamid epoxy chloropropane and polyacrylamide-glyoxal polymer.
4. processing method according to claim 1, is characterized in that, described starch material is ative starch or modified starch.
5. processing method according to claim 4, is characterized in that, described modified starch is at least one in the derivative compound of cationic starch, amphoteric starch and modified starch.
6. processing method according to claim 4, is characterized in that, in the time that described starch material is ative starch, describedly starch material is carried out to pre-treatment to obtain concentration be that the step of the first starch solution of 30-40% comprises:
Use 40-50 DEG C of clear water that described starch material is brewed to solution, synchronous alkali lye and the etherifying agent stirring reaction of adding in brew process, the over dry addition of described alkali lye is 1-10kg/ ton over dry starch, the over dry addition of described etherifying agent is 1-10kg/ ton over dry alkali, described pH control after brewed is 10-12, the described stirring reaction time is 8-12 hour, after reaction, regulates pH to 6-8 to obtain described the first starch solution that concentration is 30-40% by acid solution;
In the time that described starch material is modified starch, describedly starch material is carried out to pre-treatment to obtain concentration is that the step of the first starch solution of 30-40% comprises:
Use 40-50 DEG C of clear water that described starch material is brewed to concentration for 30-40% solution and within stirring reaction 1-2 hour, obtains described the first starch solution.
7. processing method according to claim 6, is characterized in that, described alkali lye is at least one in NaOH, potassium hydroxide, sodium bicarbonate and magnesium hydroxide; Described etherifying agent is at least one of cationic etherifying agent and both sexes etherifying agent; Described acid solution is at least one of hydrochloric acid, sulfuric acid and citric acid.
8. processing method according to claim 7, is characterized in that, the concentration of described alkali lye is 5-10%.
9. processing method according to claim 1, is characterized in that, describedly by immersion method, described the first starch solution is diluted and is heated up, and obtains after swollen comprising containing the step of the second starch solution of different-grain diameter starch ball:
To passing in the same way hot water in described the first starch solution pipeline, described the first starch solution is diluted to 10-12% by the built-in blow-off pipe of oblique cutting, and is warming up to 40-80 DEG C, obtain the second starch solution containing different-grain diameter starch ball after swollen.
10. a paper making pulp, is characterized in that, described paper making pulp is obtained by the disposal methods described in claim 1-9 any one.
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| CN201410329002.5A CN104088193A (en) | 2014-07-10 | 2014-07-10 | Processing method for papermaking pulp and papermaking pulp |
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| CN201410329002.5A CN104088193A (en) | 2014-07-10 | 2014-07-10 | Processing method for papermaking pulp and papermaking pulp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106320066A (en) * | 2015-07-01 | 2017-01-11 | 金东纸业（江苏）股份有限公司 | Preparation method of filler composition, filler composition and paper |
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| CN101177458A (en) * | 2007-10-30 | 2008-05-14 | 山东太阳纸业股份有限公司 | Method for synthesizing cationic starch |
| CN101363204A (en) * | 2007-07-05 | 2009-02-11 | 巴斯夫欧洲公司 | Aqueous suspensions of fine particulate fillers, method for producing the same and use thereof for producing papers having a high filler content and a high dry strength |
| CN103343478A (en) * | 2013-07-03 | 2013-10-09 | 金华盛纸业（苏州工业园区）有限公司 | Wet-end starch and application thereof |
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- 2014-07-10 CN CN201410329002.5A patent/CN104088193A/en active Pending
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| US5620510A (en) * | 1995-06-23 | 1997-04-15 | Cpc International Inc. | Swollen starches as papermaking additives |
| US6040379A (en) * | 1997-08-15 | 2000-03-21 | Penford Corporation | Starch copolymer products and process |
| CN101363204A (en) * | 2007-07-05 | 2009-02-11 | 巴斯夫欧洲公司 | Aqueous suspensions of fine particulate fillers, method for producing the same and use thereof for producing papers having a high filler content and a high dry strength |
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| CN101177458A (en) * | 2007-10-30 | 2008-05-14 | 山东太阳纸业股份有限公司 | Method for synthesizing cationic starch |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106320066A (en) * | 2015-07-01 | 2017-01-11 | 金东纸业（江苏）股份有限公司 | Preparation method of filler composition, filler composition and paper |
| CN106320066B (en) * | 2015-07-01 | 2018-04-03 | 金东纸业（江苏）股份有限公司 | A kind of preparation method of fill composition, fill composition and paper |
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