CN103884745A - Determination method of ion accumulation index of papermaking system - Google Patents
Determination method of ion accumulation index of papermaking system Download PDFInfo
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- CN103884745A CN103884745A CN201210562257.7A CN201210562257A CN103884745A CN 103884745 A CN103884745 A CN 103884745A CN 201210562257 A CN201210562257 A CN 201210562257A CN 103884745 A CN103884745 A CN 103884745A
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Abstract
The invention relates to a determination method of ion accumulation index (IA) of a papermaking system. According to the method, the ion accumulation degree of the papermaking system can be evaluated by determination of off-net plain water conductivity C and off-net plain water colloidal charge P of the papermaking system; and the ion accumulation index (IA) of the papermaking system is defined as follows: IA = K0 * (Cn * Pn-C0*P0) * 100%/(C0 * P0), when the IA is greater than or equal to 90%, the IA shows that the ion accumulation degree of the papermaking system is relatively high, the papermaking system needs to be cleaned in recent period, and when the IA is less than 90%, the IA shows that the papermaking system can be cleaned after a period of continue operation. By use of the determination method for timely determination of the ion accumulation index (IA) of the papermaking system, a basis for designed and timely management of downtime cleaning of the papermaking production system and production loss reduction is provided.
Description
Technical field
The present invention relates to the assay method of paper manufacturing systems ion accumulation degree in a kind of paper process, by measuring the ion accumulation index of paper manufacturing systems, can monitor in time the operation conditions of paper manufacturing systems, with steady production, reduce the loss.
Technical background
Reducing rinse dosage is the important channel of clean paper making with improving mthod of white water from paper making circulating and recovering ratio, but, after mthod of white water from paper making sealing, along with the fresh water amount of the system of entering and the wastewater flow rate of discharge greatly reduce, the interfering material that is accumulated in system rolls up, a large amount of fiber fines, filler, dissolved organic matter and inorganic salts are constantly accumulation in paper manufacturing systems, badly influences the steady production of paper machine, luxus consumption and the product quality of chemicals.
In actual production, due to the whitewater closure various interference that bring that circulate, the particularly ion accumulation of paper manufacturing systems, tend to severe jamming paper system, affect Chemistry Process and the product quality of paper machine, be in particular in: (1) affects the normal operation of paper machine, (2) affect the performance of paper making additive effect, especially sizing agent, reinforcing agent (dry strong or wet strong), retention/filtration aid etc., evenness, physical strength and the optical property (opacity, brightness and whiteness etc.) of (3) paper.Therefore, the ion accumulation degree of monitoring paper manufacturing systems, is convenient to arrange in time stop cleaning, ensures that paper manufacturing systems moves in clean conditions, thereby reduces production obstacle and the economic loss brought because of corruption slurry, broken end, significant to paper.
Summary of the invention
The object of the present invention is to provide a kind of assay method of paper manufacturing systems ion accumulation degree, for monitoring the clean condition of paper system, provide guidance for realizing clean paper.
Usually, along with the increase of paper manufacturing systems ion accumulation, the conductivity of papermaking machine water raises, and meanwhile, also causes System Charges imbalance, and the colloidal electric charge of plain boiled water also can increase.Therefore, the colloidal electric charge of the ion accumulation degree of paper manufacturing systems and the conductivity of machine water, machine water is proportional.
According to above-mentioned design, the present invention adopts following technical scheme:
Suppose, after a certain paper manufacturing systems stop cleaning (plain boiled water in the system of draining), then start operation sampling in 4 hours, the conductivity that records machine water is C
0, the colloidal electric charge that records machine water is P
0; Then, wait this system operation a couple of days after the sampling conductivity that records machine water be C
n, the colloidal electric charge that records machine water is P
n, the ion accumulation index of definition paper manufacturing systems is IA,
IA＝K
0×(C
n×P
n-C
0×P
0)×100％/(C
0×P
0)
In formula: K
0for experimental constant (determining according to dissimilar paper manufacturing systems)
Under normal circumstances, K
0=1.0
General, if IA >=90% shows that the ion accumulation degree of this paper manufacturing systems is higher, this paper manufacturing systems needs to arrange in the recent period stop cleaning; If IA < 90%, shows to arrange stop cleaning after this paper manufacturing systems can continue to move a period of time again.Therefore,, by the monitoring to ion accumulation index IA, can provide technical basis for paper system in a planned way arranges stop cleaning in time.
The inventive method has following apparent advantage:
1, this method is simple to operate, and application is convenient, is conducive to promoting the use of of enterprise.
2, this method is evaluated the operation conditions of paper manufacturing systems with ion accumulation index, thereby is conducive to implement cleaner production, and its measurement result is not subject to the interference of other correlative factors, and authenticity and reliability are higher, have actual application value.
Brief description of the drawings
PCD device appearance figure for Fig. 1 colloidal electric charge testing experiment
The test philosophy figure of PCD instrument for Fig. 2 colloidal electric charge testing experiment
Fig. 3 conductivity test test unit schematic diagram
Embodiment
1, conductivity instrument and method of testing
Instrument: test instrument is DDB-11A conductivity meter, and selecting electrode is 2301-C conductance electrode (K=1), and be furnished with 1408 μ S/cm conductivity calibration solution (50mL), glass-stem thermometers.
Method of testing: test according to DDB-11A portable electric electrical conductivity instrument operation instructions.
2, colloidal electric charge testing tool and method of testing
Instrument: testing colloidal electric charge testing tool used is Mutek PCD-04 colloidal electric charge analyzer, is produced by BTG company of Switzerland, and instrument is mainly made up of analysis room, piston, metal electrode etc.
Method of testing: test according to Mutek PCD-04 colloidal electric charge analyzer operation instructions.
Claims (3)
1. an assay method for paper manufacturing systems ion accumulation index, it is a kind ofly to evaluate the method for paper manufacturing systems ion accumulation degree by measuring the conductivity of paper manufacturing systems machine water and the colloidal electric charge of machine water, and to define ion accumulation index be IA:
IA＝K
0×(C
n×P
n-C
0×P
0)×100％/(C
0×P
0)
Wherein, K
0for experimental constant (generalized case, K
0=1.0), C
0, C
nfor adopting the conductivity of the paper manufacturing systems machine water that records of conductivity meter, unit is μ S/cm, P
0, P
nfor adopting the colloidal electric charge of the paper manufacturing systems machine water that colloidal electric charge analyzer records, unit is mV, it is characterized in that:
1. C
0, P
0respectively after some paper manufacturing systems stop cleanings (plain boiled water in the system of draining) to be measured, then start operation sampling in 4 hours, the conductivity of the machine water recording and the data of colloidal electric charge;
2. C
n, P
nrespectively the above-mentioned conductivity of machine water and the data of colloidal electric charge that record after examining system operation a couple of days;
3. when IA >=90%, show that the ion accumulation degree of this paper manufacturing systems is higher, this paper manufacturing systems needs to arrange in the recent period stop cleaning; As IA < 90%, show that this paper manufacturing systems can continue to move after a period of time, then arrange stop cleaning.
2. the assay method of paper manufacturing systems ion accumulation index claimed in claim 1, is characterized in that paper manufacturing systems machine water conductivity is the data that adopt DDB-11A portable electric electrical conductivity instrument to measure.
3. the assay method of paper manufacturing systems ion accumulation index claimed in claim 1, the colloidal electric charge that it is characterized in that paper manufacturing systems machine water is the data that adopt Mutek PCD-04 colloidal electric charge analyzer to measure, this instrument is produced by BTG company of Switzerland, and instrument is mainly made up of analysis room, piston and metal electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210562257.7A CN103884745B (en) | 2012-12-21 | 2012-12-21 | A kind of assay method of paper manufacturing systems ion accumulation index |
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|---|---|---|---|
| CN201210562257.7A CN103884745B (en) | 2012-12-21 | 2012-12-21 | A kind of assay method of paper manufacturing systems ion accumulation index |
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| CN103884745A true CN103884745A (en) | 2014-06-25 |
| CN103884745B CN103884745B (en) | 2018-04-06 |
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Citations (6)
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| CN101458206A (en) * | 2007-12-14 | 2009-06-17 | 朱勇强 | Method for rapidly measuring material retention on paper making net |
| CN101458243A (en) * | 2007-12-14 | 2009-06-17 | 朱勇强 | Test method for pollution degree of wire-cloth |
| JP4626374B2 (en) * | 2005-04-20 | 2011-02-09 | 栗田工業株式会社 | Papermaking method and papermaking additive |
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Patent Citations (6)
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| FI981054A (en) * | 1998-05-12 | 1999-11-13 | Valtion Teknillinen | Process for the analysis of chemical compounds in process water from a cellulose factory or a paper machine |
| CN1313918A (en) * | 1998-07-28 | 2001-09-19 | 纳尔科化学公司 | Method of removing and preventing the buildup of contaminants in papermaking processes |
| CN1410762A (en) * | 2002-11-28 | 2003-04-16 | 华南理工大学 | Photometry of paper pulp suspension liquid colloid dissolving electric charge |
| JP4626374B2 (en) * | 2005-04-20 | 2011-02-09 | 栗田工業株式会社 | Papermaking method and papermaking additive |
| CN101458206A (en) * | 2007-12-14 | 2009-06-17 | 朱勇强 | Method for rapidly measuring material retention on paper making net |
| CN101458243A (en) * | 2007-12-14 | 2009-06-17 | 朱勇强 | Test method for pollution degree of wire-cloth |
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|---|
| 何北海: "《造纸工业清洁生产原理与技术》", 31 January 2007, 中国轻工业出版社 * |
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| 袁广翔: "造纸白水封闭循环影响因素研究", 《中国博士学位论文全文数据库 工程科技Ⅰ辑》 * |
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| CN103884745B (en) | 2018-04-06 |
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Effective date of registration: 20221207 Address after: Room 4A-207, No. 43, Changjiang Road, Baoshan District, Shanghai, 200940 Patentee after: Shanghai Saiboling Environmental Technology Co.,Ltd. Address before: Room 603, No. 6, Lane 4618, Gonghexin Road, Shanghai, 200435 Patentee before: Zhu Yongqiang |
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