CN101624800B - Chemical treatment method for improving sulfite straw pulp alkyl ketene dimer sizing - Google Patents
Chemical treatment method for improving sulfite straw pulp alkyl ketene dimer sizing Download PDFInfo
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- CN101624800B CN101624800B CN2009100634913A CN200910063491A CN101624800B CN 101624800 B CN101624800 B CN 101624800B CN 2009100634913 A CN2009100634913 A CN 2009100634913A CN 200910063491 A CN200910063491 A CN 200910063491A CN 101624800 B CN101624800 B CN 101624800B
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- straw pulp
- sulfite
- akd
- sulfite straw
- pulp
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Abstract
The invention relates to a chemical treatment method for improving sulfite straw pulp alkyl ketene dimer (AKD for short) sizing. The method is characterized in that during the papermaking process, the sulfite straw pulp before AKD sizing is pretreated with inorganic aluminum salt, and inorganic aluminum salt is added to the sulfite straw pulp after AKD sizing; the sulfite straw pulp is controlled in alkaline condition. After the sulfite pulp is pretreated through inorganic aluminum salt chemical method, the property of the electric charge on the surface of pulp fibre is changed, and the adaptability of sulfite straw pulp to AKD sizing agent is improved; inorganic aluminum salt added in the sulfite straw pulp after AKD sizing is beneficial for the effect of the AKD sizing agent to fibre, the AKD sizing effect of the sulfite straw pulp is improved, and the degree of sizing is improved.
Description
Technical field
The present invention relates in a kind of machine hand's skill fibre stuff carried out chemically treated technology, be applied to adopt sulfite straw pulp to destroy the pulp and paper technology field of paper.
Background technology
Sulfite straw pulp is because of the reason of pulping process; Contain more careless skins tissue and plant membrane; Cause the siliceous content of ashes of slurry high, the pulp fiber surface elecrtonegativity strengthens, and obviously influences alkyl ketene dimer sizing agent (being called for short AKD) neutral sizing effect; Deal with improperly simultaneously in printing process, cause easily the hair, scumming, influence printing quality.The improvement method of considering at present is in paper stock, to add anion-trapping agent such as polymine, fail to solve effectively the difficult problem of sulfite straw pulp AKD applying glue in the production process, and cost of drugs is high.
Do not find that through retrieval the method for improving sulfite straw pulp AKD sizing efficiency with chemical treatment is disclosed or uses.
Summary of the invention
Use sulfite straw pulp to copy the difficult problem of paper AKD applying glue in the production process in order to solve; The present invention provides a kind of chemical treatment method that improves sulfite straw pulp AKD applying glue; Be a kind of chemical treatment method that uses inorganic aluminate class chemicals, can effectively improve the AKD sizing efficiency that sulfite straw pulp is copied paper.
Technical scheme of the present invention is: the chemical treatment method that improves sulfite straw pulp AKD applying glue; It is characterized in that: in machine hand's skill process; Sulfite straw pulp before the AKD applying glue is carried out preliminary treatment with inorganic aluminate, and add inorganic aluminate in the sulfite straw pulp after the AKD applying glue; And the control sulfite straw pulp is an alkali condition.
Above-mentionedly carry out preliminary treatment with inorganic aluminate and be meant: using alkali to regulate to wait in the stock tank sulfite straw pulp pH value of copying paper in advance is 7.5 to 8.5, and the inorganic aluminate that adds 0.1%～1.0% (relative finished paper) again carries out preliminary treatment.Cationization processing through inorganic aluminate reduces the surperficial elecrtonegativity that contains the more paper pulp fiber of siliceous ash content, and weakening or eliminating silicon matter are to the interference of AKD neutral sizing agent.
Adding inorganic aluminate in the above-mentioned sulfite straw pulp after the AKD applying glue is meant: after in sulfite straw pulp, adding the AKD sizing agent, add the inorganic aluminate of 0.1%～1.0% (finished paper relatively) again.Reduce anionic charge amount in the paper stock system, guarantee that the AKD neutral sizing agent is to the effect of fiber with copy the normal and stable of paper wet end chemistry system; The pH value of control process process paper stock is at 7.5 to 8.5 alkali condition, to promote the treatment effect and the glue blending function that improves the AKD neutral sizing agent to the slurry cationization.
Beneficial effect
After the foregoing invention method is handled, carry out the quality contrast with undressed paper, its degree of sizing is by not seeing that sizing efficiency can bring up to 28 seconds (liquid osmosis, 105 ℃ of oven dry 20min).
The specific embodiment
The main process of paper production technology of copying of the present invention:
Oneself kowtows, and sulfite straw pulp → oneself kowtows stock tank → stock proportioner (adding cationic starch) → machine chest (adjust pH adds inorganic aluminate) → header box (adding the AKD sizing agent) → fan pump (machine water dilution; Add filler, add inorganic aluminate) → purification screening (exit adds PAMC) → flow box → paper machine
Promptly adopting sulfite straw pulp to copy in the existing production Technology of pulping and paper-making of paper; Before adding the AKD sizing agent; Using alkali to regulate to wait in the stock tank sulfite straw pulp pH value of copying paper in advance is 7.5 to 8.5, adds the inorganic aluminate of 0.1%～1.0% (relative finished paper) again.After adding the AKD sizing agent, add the inorganic aluminate of 0.1%～1.0% (finished paper relatively) again.
Percentage in the following instance of the present invention is weight ratio.
Production instance 1:
According to said method of the present invention, and operate by following condition.
Machine hand's condition of planting:
The full Sulfite Reed Pulp of raw material
Filler (talcum powder) consumption 20% (to finished paper)
Cationic starch consumption 1% (to finished paper)
AKD neutral sizing agent consumption 0.21% (to finished paper)
PAMC consumption 0.029% (to finished paper)
PH value 7.5
Add aluminum sulfate amount 0.2% (to finished paper) in the machine chest
Add aluminium polychloride amount 0.4% (to finished paper) after the AKD applying glue
Degree of sizing test: 8 seconds (liquid osmosis, 105 ℃ of oven dry 20min).
Production instance 2:
According to said method of the present invention, and operate by following condition.
Machine hand's condition of planting:
The full Sulfite Reed Pulp of raw material
Filler (precipitated calcium carbonate) consumption 20% (to finished paper)
Cationic starch consumption 1% (to finished paper)
AKD neutral sizing agent consumption 0.26% (to finished paper)
PAMC consumption 0.029% (to finished paper)
PH value 8.2
Add aluminium chloride amount 0.5% (to finished paper) in the machine chest
Add aluminium polychloride amount 0.8% (to finished paper) after the AKD applying glue
Degree of sizing test: 22 seconds (liquid osmosis, 105 ℃ of oven dry 20min).
Production instance 3:
According to said method of the present invention, and operate by following condition.
Machine hand's condition of planting:
The full Sulfite Reed Pulp of raw material
Filler (precipitated calcium carbonate) consumption 20% (to finished paper)
Cationic starch consumption 1% (to finished paper)
AKD neutral sizing agent consumption 0.30% (to finished paper)
PAMC consumption 0.029% (to finished paper)
PH value 8.5
Add aluminium polychloride amount 0.8% (to finished paper) in the machine chest
Add aluminium polychloride amount 0.6% (to finished paper) after the AKD applying glue
Degree of sizing test: 28 seconds (liquid osmosis, 105 ℃ of oven dry 20min).
Claims (1)
1. improve the chemical treatment method of sulfite straw pulp AKD applying glue; It is characterized in that: in machine hand's skill process; Sulfite straw pulp before the AKD applying glue is carried out preliminary treatment with inorganic aluminate, and add inorganic aluminate in the sulfite straw pulp after the AKD applying glue; And the control sulfite straw pulp is an alkali condition; Sulfite straw pulp before the AKD applying glue is carried out preliminary treatment with inorganic aluminate, is that to use alkali to regulate to wait in the stock tank sulfite straw pulp pH value of copying paper in advance be 7.5 to 8.5, adds the inorganic aluminate of relative finished paper weight 0.1%～1.0% again; Adding inorganic aluminate in the sulfite straw pulp after the AKD applying glue, is after in sulfite straw pulp, adding the AKD sizing agent, adds the inorganic aluminate of relative finished paper weight 0.1%～1.0% again, and the pH value of system remains 7.5 to 8.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100634913A CN101624800B (en) | 2009-08-07 | 2009-08-07 | Chemical treatment method for improving sulfite straw pulp alkyl ketene dimer sizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100634913A CN101624800B (en) | 2009-08-07 | 2009-08-07 | Chemical treatment method for improving sulfite straw pulp alkyl ketene dimer sizing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101624800A CN101624800A (en) | 2010-01-13 |
| CN101624800B true CN101624800B (en) | 2012-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2009100634913A Expired - Fee Related CN101624800B (en) | 2009-08-07 | 2009-08-07 | Chemical treatment method for improving sulfite straw pulp alkyl ketene dimer sizing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101624800B (en) |
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2009
- 2009-08-07 CN CN2009100634913A patent/CN101624800B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101624800A (en) | 2010-01-13 |
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Granted publication date: 20120314 Termination date: 20120807 |