CN103884644A - Determination method of colloid reservation index on papermaking net - Google Patents
Determination method of colloid reservation index on papermaking net Download PDFInfo
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- CN103884644A CN103884644A CN201210562242.0A CN201210562242A CN103884644A CN 103884644 A CN103884644 A CN 103884644A CN 201210562242 A CN201210562242 A CN 201210562242A CN 103884644 A CN103884644 A CN 103884644A
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- cri
- colloid
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- paper manufacturing
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Abstract
The invention relates to a determination method of colloid retention index (CRI) on a papermaking net. According to the method, the colloid retention effect of on the papermaking system net can be evaluated by determination of turbidity N1 of filtered on-net slurry and turbidity N2 of filtered off-net plain water of a papermaking system; the colloid retention index (CRI) on the papermaking system net is defined as follows: CRI = K0 * (N1-N2) * 100%/N1, when the CRI is greater than or equal to 50%, the CRI indicates that the colloid retention effect on the papermaking system net is good, and conversely, if the CRI is less than 50%, the CRI indicates that the colloid retention effect on the papermaking system net is not optimal, so that optimization must be performed as soon as possible so as to guarantee clean and stable operation of the papermaking system. By monitoring of the colloid retention index (CRI) of the papermaking system, the running status of the papermaking system can be monitored timely, and a technical guidance is provided for the stable papermaking production.
Description
Technical field
The present invention relate to a kind of in paper process the assay method of colloid retention index on wire-cloth, be used for evaluating the colloid retention on wire-cloth, thereby provide technological guidance for the stable operation of paper machine.
Technical background
Due to prevention and cure of pollution, energy resource consumption, economic dispatch reason, the sealing reuse of white-water system is the inexorable trend that realizes machine room cleaner production sustainable development.
But whitewater closure circulation completely causes the continuous accumulation of colloidal material in paper manufacturing systems, and because colloidal material has the volume less than the paper making raw material such as fiber and filler and larger specific surface area, so they can preferentially and add the various Cationic aids in system to react, the cationic demand of increase system, even make Cationic aid lose efficacy, then cause the problems in paper, as become paper drainability to decline, retention reduces, paper sheet formation is bad, paper strength declines, there is the hole of page, the paper defects such as brocken spectrum, and the runnability of paper machine is declined, paper machine system deterioration etc.
Therefore, in actual production, by measuring the colloid retention index on wire-cloth, can effectively control and eliminate the impact of colloidal material on normal production and product quality, thereby further optimize paper making wet part environment, the runnability of paper machine system, the quality of paper are greatly improved.
Summary of the invention
The object of the present invention is to provide the assay method of colloid retention index on a kind of wire-cloth, and the method can evaluate out the retention of colloidal material on wire-cloth, provide guidance for realizing clean stable paper.
Usually, the colloidal material in paper manufacturing systems can be dissolved in water, and makes water become muddy, therefore, the online slurry of paper manufacturing systems and machine water filter the turbidity of filtrate afterwards can reflect to a great extent colloidal material wherein number.
According to above-mentioned design, the present invention adopts following technical proposals:
Suppose, the turbidity of measuring after the online slurries filtration of a certain paper manufacturing systems is N
1, the turbidity of measuring after machine water filters is N
2, the colloid retention index on definition wire-cloth is CRI:
CRI＝K
0×(N
1-N
2)×100％/N
1
In formula: K
0for experimental constant (determining according to dissimilar paper manufacturing systems), under normal circumstances, K
0=1.0.
Usually, if CRI >=50% shows that the colloid on this system wire-cloth retains better; Otherwise, if CRI < 50% shows that the colloid retention on this system wire-cloth is not good, must optimize as early as possible the wet end chemistry of paper manufacturing systems, to ensure the clean and stable operation of paper manufacturing systems.Therefore, by the monitoring to paper manufacturing systems colloid retention index CRI, can monitor in time the operation conditions of paper manufacturing systems, provide technological guidance for stablizing paper.
The inventive method has following apparent outstanding feature and remarkable advantage:
1. this method is simple to operate, and application is convenient, is conducive to promoting the use of of papermaking enterprise.
2. the present invention evaluates the quality of colloid retention on wire-cloth with nephelometry, and measurement result is not disturbed by other correlative factor, and authenticity and reliability are high, have actual application value.
Brief description of the drawings
Figure turbidimeter schematic diagram
Embodiment
Turbidimeter and method of testing:
Instrument: test instrument is SZD-2 type photonephelometer, and is furnished with formal hydrazine turbidity standard solution and demarcates.
Method of testing: test according to SZD-2 type photonephelometer operation instructions.
Claims (3)
1. the assay method of colloid retention index on a wire-cloth, it be a kind of by measure paper manufacturing systems online slurry and machine water after filtration the turbidity of the filtrate after media filtration evaluate the method for the online colloid retention of paper manufacturing systems, and to define colloid retention index on wire-cloth be CRI:
CRI＝K
0×(N
1-N
2)×100％/N1
Wherein, K
0for experimental constant (determining according to dissimilar paper manufacturing systems), under normal circumstances, K
0=1.0; N
1, N
2be respectively and adopt paper manufacturing systems online slurry that turbidimeter measures and the machine water turbidity of the filtrate after media filtration after filtration, unit is NTU, it is characterized in that:
If CRI >=50%, shows that the online colloid of this paper manufacturing systems retains better; Otherwise, if CRI < 50% shows that the colloid retention on this system network is not good, must optimize as early as possible, to ensure the clean and stable operation of paper manufacturing systems.
2. the method for testing of colloid retention index on wire-cloth claimed in claim 1, it is the data that adopt SZD-2 type photonephelometer to record that it is characterized in that surfing the Net slurry and machine water filter the turbidity of filtrate afterwards.
3. the method for testing of colloid retention index on wire-cloth claimed in claim 1, is characterized in that described filter medium is to choose any one kind of them in 100 order stainless (steel) wires, 80 order nylon wires and middling speed qualitative filter paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210562242.0A CN103884644A (en) | 2012-12-21 | 2012-12-21 | Determination method of colloid reservation index on papermaking net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210562242.0A CN103884644A (en) | 2012-12-21 | 2012-12-21 | Determination method of colloid reservation index on papermaking net |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103884644A true CN103884644A (en) | 2014-06-25 |
Family
ID=50953661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210562242.0A Pending CN103884644A (en) | 2012-12-21 | 2012-12-21 | Determination method of colloid reservation index on papermaking net |
Country Status (1)
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| CN (1) | CN103884644A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312872A (en) * | 1998-07-10 | 2001-09-12 | 卡尔贡公司 | A microparticle system in the paper making process |
| CN1429300A (en) * | 2000-05-16 | 2003-07-09 | 巴科曼实验室国际公司 | Process for making paper |
| WO2004088306A1 (en) * | 2003-04-02 | 2004-10-14 | Kemira Oyj | Method for the determination of dissolved and colloidal disturbing substances in a papermaking process |
| JP2007262628A (en) * | 2006-03-29 | 2007-10-11 | Kurita Water Ind Ltd | Method for monitoring effect of papermaking chemical and method for controlling injection rate of the papermaking chemical |
| CN101458206A (en) * | 2007-12-14 | 2009-06-17 | 朱勇强 | Method for rapidly measuring material retention on paper making net |
| CN101498640A (en) * | 2009-03-06 | 2009-08-05 | 天津科技大学 | Fast appraisement method for waste paper-pulp gummy substance control effect |
| CN101885528A (en) * | 2010-07-27 | 2010-11-17 | 晏永祥 | Powdery high-whiteness polyaluminium chloride complex and preparation method thereof |
| CN102767117A (en) * | 2011-05-03 | 2012-11-07 | 湖北中烟工业有限责任公司 | Method for raising retention rate and drainability of slurry of tobacco sheet by papermaking process |
| CN102818743A (en) * | 2012-08-07 | 2012-12-12 | 金东纸业（江苏）股份有限公司 | Method for detecting sticky matters of paper making system and method for controlling content of sticky matters of paper making system |
-
2012
- 2012-12-21 CN CN201210562242.0A patent/CN103884644A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312872A (en) * | 1998-07-10 | 2001-09-12 | 卡尔贡公司 | A microparticle system in the paper making process |
| CN1429300A (en) * | 2000-05-16 | 2003-07-09 | 巴科曼实验室国际公司 | Process for making paper |
| WO2004088306A1 (en) * | 2003-04-02 | 2004-10-14 | Kemira Oyj | Method for the determination of dissolved and colloidal disturbing substances in a papermaking process |
| JP2007262628A (en) * | 2006-03-29 | 2007-10-11 | Kurita Water Ind Ltd | Method for monitoring effect of papermaking chemical and method for controlling injection rate of the papermaking chemical |
| CN101458206A (en) * | 2007-12-14 | 2009-06-17 | 朱勇强 | Method for rapidly measuring material retention on paper making net |
| CN101498640A (en) * | 2009-03-06 | 2009-08-05 | 天津科技大学 | Fast appraisement method for waste paper-pulp gummy substance control effect |
| CN101885528A (en) * | 2010-07-27 | 2010-11-17 | 晏永祥 | Powdery high-whiteness polyaluminium chloride complex and preparation method thereof |
| CN102767117A (en) * | 2011-05-03 | 2012-11-07 | 湖北中烟工业有限责任公司 | Method for raising retention rate and drainability of slurry of tobacco sheet by papermaking process |
| CN102818743A (en) * | 2012-08-07 | 2012-12-12 | 金东纸业（江苏）股份有限公司 | Method for detecting sticky matters of paper making system and method for controlling content of sticky matters of paper making system |
Non-Patent Citations (1)
| Title |
|---|
| 刘温霞 等: "《造纸湿部化学》", 31 January 2006 * |
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Application publication date: 20140625 |