CN1974864A - Method of regulating single anode pole distance in aluminium electrobath based on energy saving - Google Patents
Method of regulating single anode pole distance in aluminium electrobath based on energy saving Download PDFInfo
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- CN1974864A CN1974864A CN 200610032596 CN200610032596A CN1974864A CN 1974864 A CN1974864 A CN 1974864A CN 200610032596 CN200610032596 CN 200610032596 CN 200610032596 A CN200610032596 A CN 200610032596A CN 1974864 A CN1974864 A CN 1974864A
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- anode
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Abstract
The method of regulating the single anode pole distance in aluminum electrobath based on energy saving includes the following steps: lowering the anode crossbeam bus until reaching tank voltage fluctuation over 80 mV, measuring anode current, measuring single anode pole distance in aluminum electrobath, and regulating the key poles according to the anode current fluctuation and pole distance. The present invention regulates according to relation between anode current and the pole distance distribution, and can reduce local horizontal current, reduce average pole distance, decrease aluminum liquid fluctuation, optimize the overall cell condition, raise current efficiency, lower power consumption and increase the life of aluminum electrobath.
Description
Technical field
The present invention relates to a kind of based on energy-conservation method of regulating single anode pole distance in aluminium electrobath.
Background technology
Both at home and abroad at present the aluminium cell power-saving technology that adopts is broadly divided into three classes: reduce conductive component resistance and contact resistance, improve that processing condition improve current efficiency, coefficient and duration of effect lower efficiency.These conservation measuress all are based on traditional steer mode and work out, only utilize the bath voltage, potline current of online acquisition and the finite information such as part thermal field parameter that off-line obtains, and the distribution character of the non-homogeneous parameter (pole span and anodic current) of aluminium cell, the kinetic characteristic of unstable state parameter (the moving and anodic current fluctuation of aluminium fluid wave) have not been carried out on-line monitoring and analysis.
Present domestic pole span all remains on about 4.5-5.5Cm basically, and current efficiency does not have big loss when pole span is not less than 3.5Cm, suitably reduces pole span and can improve energy saving of system efficient.Because the pole span layer of aluminium cell is made up of fused electrolyte, has the characteristic of high temperature and deep-etching, the probe that inserts is wherein kept soon and will be corroded, and the difficulty of directly measuring pole span is very big, therefore can't adjust pole span and realize purpose of energy saving.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind ofly based on energy-conservation method of regulating single anode pole distance in aluminium electrobath, adopt the inventive method can the real-time pole span of soft measurement aluminium cell, regulate the anode electrolytic cell pole span, realize the purpose of energy saving of system.
The technical scheme that the present invention solves the problems of the technologies described above may further comprise the steps:
1), the whole anode crossbeam bus that reduces, till cell voltage fluctuation is not less than 80mV;
2), measure each anodic current;
3), measure each electrode pole span;
4), select fluctuation of current to surpass 6000 amperes, pole span to heighten adjustment less than the electrode of 4cm, an adjusting range is 0.5cm, till the fluctuation of current of this utmost point is in the 3000-4000 ampere;
5), select fluctuation of current to turn down adjustment less than 25 Gausses, pole span greater than the electrode of 5cm less than 6000 amperes, vertical magnetic field, an adjusting range is 0.5cm, till the anodic current fluctuation of this utmost point is in the 4000-5000 ampere.
Above-mentioned is a kind of based in the energy-conservation method of regulating single anode pole distance in aluminium electrobath, and described step 3) may further comprise the steps: the pole span (x that measures previous moment
I1), the anodic current (x of previous moment
I2), the bath voltage (x of previous moment
I3), bath voltage (x
I4), the equidistant pressure drop (x of anode rod
I5), anode rod temperature (x
I6), plate resistance (x
I7), the ratio (x of vertical current and anode rod electric current under the anode bottom
I8), set up test sample: [x
I1, x
I2, x
I3, x
I4, x
I5, x
I6, x
I7, x
I8, Y
i], Y
iBe i pole span constantly, utilize fuzzy C-means clustering method (FCM) test sample to be divided into C subclass of different cluster centres, obtain C and optimize sample, with a plurality of neural networks each subclass is set up submodel again, finally exported the result with the degree of membership weighted sum that produces after the fuzzy clustering at last, aluminium cell pole span soft-sensing model is as follows:
Y＝Sim(net，x
1，x
2，x
3，x
4，x
5，x
6，x
7，x
8)
Y is a pole span in the following formula, and net is the multiple neural network of training, x
1, x
2, x
3, x
4, x
5, x
6, x
7, x
8Be the input of network, be expressed as the ratio of vertical current and anode rod electric current under the anodic current, the bath voltage of previous moment, bath voltage, the equidistant pressure drop of anode rod, anode rod temperature, plate resistance, anode bottom of pole span, the previous moment of previous moment successively.
Technique effect of the present invention is: 1) the present invention has adopted soft-measuring technique to measure the real-time pole span of anodic, overcome the interior fused electrolyte of existing aluminium cell and had the characteristic of high temperature and deep-etching, the probe that causes inserting wherein will be corroded soon, directly measures pole span cost height, problem that difficulty is big.2) only need among the present invention that probe is installed at the scene and obtain the equidistant pressure drop of anode rod, use common probe to get final product, probe is placed on environmental facies to local preferably, has prolonged the work-ing life of probe.3) the present invention adjusts single anode pole distance according to the pole span and the anodic current of real-time measurement, can reduce regional and local horizontal current, reduce mean pole apart from, to reduce the aluminium fluid wave moving, the last purpose that realizes raising current efficiency on the basis of groove condition global optimization, cut down the consumption of energy, improve simultaneously cell life.
Description of drawings
Fig. 1 is the aluminium cell multiple neural network pole span model structure based on the fuzzy C cluster.
Embodiment
Concrete implementation step of the present invention is as follows:
1), the whole anode crossbeam bus that reduces, till cell voltage fluctuation surpasses 80mV, determine that trough moves under good state, as do not reach requirement, then continue to be optimized processing with the method for whole reduction positive bar.
2), measure anodic current.
3), potential electrode pole span.The soft measuring process of pole span is:
(1) sets up test sample, find out the variable that influences the pole span size.
The variable that influences the pole span size has 8, is respectively the pole span x that measures previous moment
I1, previous moment anodic current x
I2, previous moment bath voltage x
I3, bath voltage x
I4, the equidistant pressure drop x of anode rod
I5, anode rod temperature x
I6, plate resistance x
I7, the ratio x of vertical current and anode rod electric current under the anode bottom
I8In the above-mentioned variable, bath voltage can obtain by tank control cabinet, the equidistant pressure drop of anode rod can obtain by probe is installed, and the ratio of vertical current and anode rod electric current can utilize them definite with the relation between the anode working fate under anode rod temperature, plate resistance, the anode bottom.
Set up test sample, the form of test sample is as follows: [x
I1, x
I2, x
I3, x
I4, x
I5, x
I6, x
I7, x
I8, Y
i], Y
iFor
iPole span constantly.
(2) set up non-homogeneous pole span soft-sensing model.
Accompanying drawing 1 is the aluminium cell multiple neural network pole span model structure based on the fuzzy C cluster, and the step of setting up non-homogeneous pole span soft-sensing model is as follows:
A, at first at sample redundant in the test, utilize fuzzy C-means clustering method (FCM) that test sample is divided into C subclass of different cluster centres, obtain C and optimize sample, remove the sample of redundancy, the computing velocity of raising system;
B, optimize sample with a plurality of neural networks to C again and set up submodel, C submodel carried out fuzzy clustering obtain separately degree of membership;
C, finally exported the result with the degree of membership weighted sum that produces after the fuzzy clustering at last, it is as follows to obtain aluminium cell pole span soft-sensing model:
Y＝Sim(net，x
1，x
2，x
3，x
4，x
5，x
6，x
7，x
8)
Y is a pole span in the following formula, and net is the multiple neural network of training, x
1, x
2, x
3, x
4, x
5, x
6, x
7, x
8Be the input of network, be expressed as the ratio of vertical current and anode rod electric current under anodic current, the bath voltage of previous moment, bath voltage, the equidistant pressure drop of anode rod, anode rod temperature and the plate resistance and the anode bottom of pole span, previous moment of previous moment successively.
4), according to step 2) and 3) in anodic current and the pole span measured, find out the crucial utmost point and adjust, the condition that selection can be turned down the crucial utmost point is as follows:
A) fluctuation of current of this utmost point can not be above 6000 amperes.
B) vertical magnetic field herein can not surpass 25 Gausses.
C) pole span of this utmost point is greater than 5cm.
The condition that selection can be heightened the crucial utmost point is as follows:
A) fluctuation of current of this utmost point is above 6000 amperes.
B) pole span of this utmost point is less than 4cm.
To the crucial utmost point that needs are turned down, an adjusting range is 0.5cm, if can not deal with problems, need continuing with 0.5cm be that amplitude is adjusted, and is between the 4000-5000 ampere up to the anodic current of this utmost point.To the crucial utmost point that needs are heightened, an adjusting range also is 0.5cm, still has big fluctuation if adjust the anodic current of this crucial utmost point of back, then needs to carry out adjustment next time, till anodic current is the 3000-4000 ampere.Also determined simultaneously trough best pole span under certain condition.
Pole span control method of the present invention can be excavated the energy-saving potential of trough to greatest extent, meets the energy-saving and cost-reducing guilding principle of current China aluminium cell.
Claims (2)
1, a kind of based on energy-conservation method of regulating single anode pole distance in aluminium electrobath, may further comprise the steps:
1), the whole anode crossbeam bus that reduces, till cell voltage fluctuation is not less than 80mV;
2), measure each anodic current;
3), measure each electrode pole span;
4), select the anodic current fluctuation to surpass 6000 amperes, pole span to heighten adjustment less than the electrode of 4cm, an adjusting range is 0.5cm, till the fluctuation of current of this utmost point is in the 3000-4000 ampere;
5), select that fluctuation of current is little 6000 amperes, vertical magnetic field is turned down adjustment less than 25 Gausses, pole span greater than the electrode of 5cm, an adjusting range is 0.5cm, till the anodic current fluctuation of this utmost point is in the 4000-5000 ampere.
2, according to claim 1 based on energy-conservation method of regulating single anode pole distance in aluminium electrobath, described step 3) may further comprise the steps: the pole span (x that measures previous moment
I1), the anodic current (x of previous moment
I2), the bath voltage (x of previous moment
I3), bath voltage (x
I4), the equidistant pressure drop (x of anode rod
I5), anode rod temperature (x
I6), plate resistance (x
I7), the ratio (x of vertical current and anode rod electric current under the anode bottom
I8), set up test sample: [x
I1, x
I2, x
I3, x
I4, x
I5, x
I6, x
I7, x
I8, Y
i], Y
iBe i pole span constantly, utilize fuzzy C-means clustering method (FCM) test sample to be divided into C subclass of different cluster centres, obtain C and optimize sample, with a plurality of neural networks each subclass is set up submodel again, finally exported the result with the degree of membership weighted sum that produces after the fuzzy clustering at last, aluminium cell pole span soft-sensing model is as follows:
Y＝Sim(net，x
1，x
2，x
3，x
4，x
5，x
6，x
7，x
8)
Y is a pole span in the following formula, and net is the multiple neural network of training, x
1, x
2, x
3, x
4, x
5, x
6, x
7, x
8Be the input of network, be expressed as the ratio of vertical current and anode rod electric current under anodic current, the bath voltage of previous moment, bath voltage, the equidistant pressure drop of anode rod, anode rod temperature and the plate resistance and the anode bottom of pole span, previous moment of previous moment successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100325969A CN1974864B (en) | 2006-11-16 | 2006-11-16 | Method of regulating single anode pole distance in aluminium electrobath based on energy saving |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100325969A CN1974864B (en) | 2006-11-16 | 2006-11-16 | Method of regulating single anode pole distance in aluminium electrobath based on energy saving |
Publications (2)
| Publication Number | Publication Date |
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| CN1974864A true CN1974864A (en) | 2007-06-06 |
| CN1974864B CN1974864B (en) | 2010-10-13 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619467B (en) * | 2008-07-04 | 2011-04-27 | 河南中孚实业股份有限公司 | Aluminium electrolytic bath cathode current online adjustment method and device thereof |
| CN102206836A (en) * | 2011-05-19 | 2011-10-05 | 东北大学 | Method and device for measuring aluminum liquid level fluctuation and polar distance of aluminum cell |
| CN106460211A (en) * | 2015-03-25 | 2017-02-22 | 有限责任公司“逻辑控制铝电解槽” | Method for controlling aluminum electrolyzer on the basis of minimum power |
| CN106835200A (en) * | 2015-12-03 | 2017-06-13 | 中国科学院青海盐湖研究所 | Aluminum electrolysis cell region control system |
| CN106835201A (en) * | 2015-12-03 | 2017-06-13 | 中国科学院青海盐湖研究所 | Aluminium cell control method based on fuzzy clustering algorithm |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU985157A1 (en) * | 1981-06-23 | 1982-12-30 | Красноярский Политехнический Институт | Method of monitoring electrolyser production parameters |
| CN1322862A (en) * | 2001-04-20 | 2001-11-21 | 贵阳铝镁设计研究院 | Aluminium electrolyzing production control system |
| CN1352324A (en) * | 2001-08-20 | 2002-06-05 | 程留恩 | On-line real time measuring method and measurer for aluminium electrolyzing parameters |
-
2006
- 2006-11-16 CN CN2006100325969A patent/CN1974864B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619467B (en) * | 2008-07-04 | 2011-04-27 | 河南中孚实业股份有限公司 | Aluminium electrolytic bath cathode current online adjustment method and device thereof |
| CN102206836A (en) * | 2011-05-19 | 2011-10-05 | 东北大学 | Method and device for measuring aluminum liquid level fluctuation and polar distance of aluminum cell |
| CN102206836B (en) * | 2011-05-19 | 2012-09-26 | 东北大学 | Method and device for measuring aluminum liquid level fluctuation and polar distance of aluminum cell |
| CN106460211A (en) * | 2015-03-25 | 2017-02-22 | 有限责任公司“逻辑控制铝电解槽” | Method for controlling aluminum electrolyzer on the basis of minimum power |
| CN106460211B (en) * | 2015-03-25 | 2018-10-02 | 有限责任公司“逻辑控制铝电解槽” | The method for controlling aluminium electroloysis reduction cell using minimum power |
| CN106835200A (en) * | 2015-12-03 | 2017-06-13 | 中国科学院青海盐湖研究所 | Aluminum electrolysis cell region control system |
| CN106835201A (en) * | 2015-12-03 | 2017-06-13 | 中国科学院青海盐湖研究所 | Aluminium cell control method based on fuzzy clustering algorithm |
| CN106835200B (en) * | 2015-12-03 | 2019-01-22 | 中国科学院青海盐湖研究所 | Aluminum electrolysis cell region control system |
| CN106835201B (en) * | 2015-12-03 | 2019-01-22 | 中国科学院青海盐湖研究所 | Aluminium cell based on fuzzy clustering algorithm controls method |
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|---|---|
| CN1974864B (en) | 2010-10-13 |
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