CN201634783U - Zone control system for aluminum electrolysis cell - Google Patents
Zone control system for aluminum electrolysis cell Download PDFInfo
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- CN201634783U CN201634783U CN200920288154XU CN200920288154U CN201634783U CN 201634783 U CN201634783 U CN 201634783U CN 200920288154X U CN200920288154X U CN 200920288154XU CN 200920288154 U CN200920288154 U CN 200920288154U CN 201634783 U CN201634783 U CN 201634783U
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Abstract
The utility model discloses a control system for an electrolysis cell, and particularly relates to a zone control system for an aluminum electrolysis cell, which uses zone control methods to control the material balance, the anode current distribution and the interfacial stability of aluminum liquid electrolyte of a pre-baked anode aluminum electrolysis cell in a zoning manner. The zone control system for the aluminum electrolysis cell comprises an electrolysis cell and a cell control machine, wherein the electrolysis cell is divided into two or more control zones, and each control zone is provided with a signal acquisition and process subsystem, a cell condition diagnosis subsystem, a zone aluminum oxide feeding subsystem and a zone polar distance control subsystem. The utility model has the advantages and effects of controlling each control zone of the electrolysis cell in a targeted manner, improving the control accuracy, effectively monitoring abnormal zones and controlling the zones independently, avoiding the damage of integrated operation on the states of the electrolysis cell (particularly heat balance), facilitating the stable operation of the electrolysis cell, and achieving the effects of energy conservation, consumption reduction and higher current efficiency.
Description
Technical field
The present invention relates to a kind of Controlling System of electrolyzer, relate in particular to the application region control method the material balance of prebaked cell for aluminum-reduction, the aluminium cell area control system that anodic current distributes and ionogen aluminium liquid interface stability subregion is controlled.
Background technology
Existing complicated material balance and physical field in the aluminium cell distributes.Have only the parameter as much as possible of electrolyzer reasonably controlled just to make electrolyzer reach material balance and heat balance preferably, obtain better economic results.
The tradition control method is that the voltage signal according to electrolyzer integral body carries out analyzing and processing, adopts various control strategies to come that electrolyzer is carried out integral body and controls.Along with size constantly becomes big, spatially there is serious malconformation in the flow velocity of pole span and melt and interface fluctuation etc.The shortcoming of tradition control method constantly comes out.The concentration of aluminum oxide in ionogen is inhomogeneous on spatial distribution, and traditional control method lacks control targetedly to this, brings out the generation of anode effect easily; The tradition control method is difficult to the distribution of current of antianode and carries out real-time monitoring and adjustment, occurs the serious bias current of anode easily, causes energy wastage; Local interface takes place and fluctuates when violent in electrolyzer, and traditional control method can only be carried out integral body control to pole span, and the thermal equilibrium of electrolyzer often is damaged along with the adjustment of whole pole span.
This traditional control method of not considering the area differentiation of electrolyzer can not adapt to present society to reducing the energy consumption of aluminium electrolysis process, reduce the discharge of harmful gases amount that produces in the anode effect, and aluminium manufacturer is to the requirement of further raising current efficiency and cell life.Therefore research and develop new aluminum electrolytic cell control system and method is the technical problem that those skilled in the art are badly in need of solving.
Summary of the invention
The invention provides a kind of aluminium cell area control system in order to solve the problems of the technologies described above, purpose is in order to improve alumina concentration control accuracy in the electrolyzer, effectively monitor and eliminate local fluctuation of ionogen aluminium liquid interface and the anode quality problems that occur of electrolyzer, make electrolyzer keep satisfactory stability and thermal equilibrium, improve current efficiency, cut down the consumption of energy, reduce anode effect.
For reaching above-mentioned purpose aluminium cell area control system of the present invention, comprise electrolyzer and slot control machine, electrolyzer is divided into two or more control areas, in each control area, is provided with signal acquisition process subsystem, groove condition diagnostic subsystem, regional alumina feeding subsystem and regional pole span control subsystem.
Described signal acquisition process subsystem is the signal pickup assembly that is located on anode rod and/or the anode large bus bar, and signal pickup assembly is gathered voltage or current signal.
Described groove condition diagnostic subsystem is made of following structure: slot control machine, and the signal that received signal acquisition process subsystem sends is handled the back and is transmitted control signal to regional alumina feeding subsystem and regional pole span control subsystem; Upper computer, the signal of reception slot control machine is handled the back to the slot control machine feedback signal.
Described a regional alumina feeding subsystem is set at least in each control area.
Described regional alumina feeding subsystem is the alumina feeding device.
Described each control area is provided with anode large bus bar, and the anode large bus bar in the adjacent control area connects by soft band.
Described regional pole span control subsystem is by the anode hoister structure of groove condition diagnostic subsystem control, is provided with at least one anode hoister structure in each control area.
Advantageous effect of the present invention:
The present invention can control targetedly to each control area of electrolyzer, improved control accuracy, can effectively monitor with individual region and control unusual zone occurring, avoided integrated operation to the particularly thermally equilibrated destruction of electrolyzer state, help stablizing the electrolyzer operation, reach energy-saving and cost-reducing, improve the effect of current efficiency.
Description of drawings
Fig. 1 structural representation of the present invention.
Among the figure: 1, slot control machine; 2, alumina feeding device; 3, anode hoister structure; 4, anode large bus bar; 5, anode; 6, signal pickup assembly; 7 upper computers; 8, soft band; 9, anode rod; 10, electrolyzer.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
Embodiment 1:
As shown in Figure 1, aluminium cell area control system of the present invention, comprise electrolyzer 10 and slot control machine 1, electrolyzer 10 is divided into two control areas, in each control area, is provided with signal acquisition process subsystem, groove condition diagnostic subsystem, regional alumina feeding subsystem and regional pole span control subsystem; The signal acquisition process subsystem is the signal pickup assembly 6 that is located on anode rod 9 and/or the anode large bus bar 4, and signal pickup assembly 6 is gathered voltage or current signal; Groove condition diagnostic subsystem is made of following structure: slot control machine 1, and the signal that received signal acquisition process subsystem sends is handled the back and is transmitted control signal to electrolyzer; Upper computer 7, the signal that receives slot control machine 1 is handled the back to slot control machine 1 transmission feedback signal; Zone alumina feeding subsystem is an alumina feeding device 2; Each control area is provided with anode large bus bar 4, and the anode large bus bar 4 in the adjacent control area is with 8 to connect by soft; Zone pole span control subsystem is by the anode hoister structure 3 of groove condition diagnostic subsystem control, is provided with an anode hoister structure in each control area.
The control method of aluminium cell area control system, be made of following step: the signal acquisition process subsystem in each control area is sent to groove condition diagnostic subsystem with the signal of gathering, for groove condition diagnostic subsystem provides the data input, by groove condition diagnostic subsystem the groove condition is diagnosed, groove condition diagnostic subsystem sends action command to regional alumina feeding subsystem in the different control areas and regional pole span control subsystem then, finishes regional control to electrolyzer by regional alumina feeding subsystem and regional pole span control subsystem.
The signal acquisition process subsystem is a signal pickup assembly; Groove condition diagnostic subsystem is slot control machine and upper computer; Zone alumina feeding subsystem is the alumina feeding device; Zone pole span control subsystem is the anode hoister structure.
When alumina concentration is controlled, the alumina feeding device of different control areas receives the action command of slot control machine, different control areas alumina concentration according to electrolyzer carries out reinforced targetedly, the alumina concentration of each control area is to change according to the resistance slope of this control area to control, each control area resistance slope only change by with the anode large bus bar of this control area and next anode electrolytic cell greatly the voltage difference of bus calculate.
When fluctuating when violent in ionogen aluminium liquid interface, slot control machine sends action command to each control area anode hoister structure and adjusts pole span, avoids the current efficiency loss, and whether the fluctuation of ionogen aluminium liquid interface acutely is to judge according to the fluctuation of each anodic electric current.
When the current deviation of antianode is controlled, each anodic real-time current distributed data that slot control machine and upper computer are gathered according to signal pickup assembly, relatively by each anodic current deviation, find then and the average bigger anode of current deviation, send action command if certain control area anode all has similar deviation to each control area anode hoister structure and adjust pole span, if be that single anode deviation is very big, utilize overhead traveling crane that pole span is adjusted.
When the antianode effect was controlled, slot control machine and upper computer were according to the fluctuation characteristic of each anodic electric current of signal pickup assembly collection, the control area that prediction is about to take place anode effect; If the control area that is about to take place anode effect is arranged, the alumina feeding device of slot control machine in the control area that is about to take place anode effect sends reinforced instruction, feeds in raw material.
Anodic current is to gather voltage or current signal calculating by anode rod that is located at and/or the signal pickup assembly on the anode large bus bar.
Embodiment 2:
Embodiment 3:
Embodiment 4:
Control principle of the present invention is as follows: when electric current passed through electrolyzer, each anode was formed shunt circuit.Therefore electrolyte level in the electrolyzer, resistivity is stretched one's legs and the even anodic distribution of current of skewness spatially such as precipitation and variation have close ties.The partial alumina concentration of electrolyzer changes, ionogen aluminium liquid interface unstable, the difference of anode quality all can show different features on the frequency by each anodic size of current and variation and amplitude, for the regional control of electrolyzer provides theoretical foundation.
Each alumina feeding device 2 is subjected to slot control machine 1 control, can separate charging.Each anode hoister structure 3 is subjected to slot control machine 1 control, one section anode large bus bar 4 of lifting separately.Signal pickup assembly 6 is transported to signal in slot control machine 1 and the upper computer 7, carry out analyzing and processing and diagnosis by slot control machine 1 and 7 pairs of signals of upper computer, send instruction targetedly by the alumina feeding device 2 of 1 pair of different control areas of slot control machine and the anode hoister structure 3 of different control areas then, alumina feeding device 2 and anode hoister structure 3 are operated electrolyzer according to instruction.
Claims (7)
1. aluminium cell area control system, comprise electrolyzer and slot control machine, it is characterized in that electrolyzer is divided into two or more control areas, in each control area, be provided with signal acquisition process subsystem, groove condition diagnostic subsystem, regional alumina feeding subsystem and regional pole span control subsystem.
2. aluminium cell area control system according to claim 1 is characterized in that described signal acquisition process subsystem is the signal pickup assembly that is located on anode rod and/or the anode large bus bar, and signal pickup assembly is gathered voltage or current signal.
3. aluminium cell area control system according to claim 1, it is characterized in that described groove condition diagnostic subsystem is made of following structure: slot control machine, the signal that received signal acquisition process subsystem sends is handled the back and is transmitted control signal to regional alumina feeding subsystem and regional pole span control subsystem; Upper computer, the signal of reception slot control machine is handled the back to the slot control machine feedback signal.
4. aluminium cell area control system according to claim 1 is characterized in that the described regional alumina feeding subsystem that is provided with at least in each control area.
5. according to claim 1 or 4 described aluminium cell area control systems, it is characterized in that described regional alumina feeding subsystem is the alumina feeding device.
6. aluminium cell area control system according to claim 1 is characterized in that described each control area is provided with anode large bus bar, and the anode large bus bar in the adjacent control area connects by soft band.
7. aluminium cell area control system according to claim 1 is characterized in that described regional pole span control subsystem for the anode hoister structure by the control of groove condition diagnostic subsystem, is provided with at least one anode hoister structure in each control area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920288154XU CN201634783U (en) | 2009-12-17 | 2009-12-17 | Zone control system for aluminum electrolysis cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920288154XU CN201634783U (en) | 2009-12-17 | 2009-12-17 | Zone control system for aluminum electrolysis cell |
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| CN201634783U true CN201634783U (en) | 2010-11-17 |
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| CN200920288154XU Expired - Lifetime CN201634783U (en) | 2009-12-17 | 2009-12-17 | Zone control system for aluminum electrolysis cell |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758224A (en) * | 2011-04-29 | 2012-10-31 | 沈阳铝镁设计研究院有限公司 | Anode effect inhibiting and extinguishing method |
| WO2013075376A1 (en) * | 2011-11-22 | 2013-05-30 | 中国铝业股份有限公司 | Method and system for inhibiting perfluorocarbon formation in aluminum electrolysis cell due to non-anode effect |
| CN103339504A (en) * | 2011-01-31 | 2013-10-02 | 美铝公司 | System and method for determining alumina properties |
| 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 |
| CN107829112A (en) * | 2017-11-14 | 2018-03-23 | 四川启明星铝业有限责任公司 | A kind of aluminium electrolysis cell anode carbon block current balance type control system and method |
-
2009
- 2009-12-17 CN CN200920288154XU patent/CN201634783U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103339504A (en) * | 2011-01-31 | 2013-10-02 | 美铝公司 | System and method for determining alumina properties |
| CN103339504B (en) * | 2011-01-31 | 2016-08-24 | 美铝公司 | For determining the system and method for alum clay attribute |
| CN102758224A (en) * | 2011-04-29 | 2012-10-31 | 沈阳铝镁设计研究院有限公司 | Anode effect inhibiting and extinguishing method |
| CN102758224B (en) * | 2011-04-29 | 2015-02-25 | 沈阳铝镁设计研究院有限公司 | Anode effect inhibiting and extinguishing method |
| WO2013075376A1 (en) * | 2011-11-22 | 2013-05-30 | 中国铝业股份有限公司 | Method and system for inhibiting perfluorocarbon formation in aluminum electrolysis cell due to non-anode effect |
| 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 |
| 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 |
| 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 |
| CN107829112A (en) * | 2017-11-14 | 2018-03-23 | 四川启明星铝业有限责任公司 | A kind of aluminium electrolysis cell anode carbon block current balance type control system and method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENYANG ALUMINUM + MAGNESIUM ENGINEERING + RESEAR Free format text: FORMER NAME: SHENYANG ALUMINIUM AND MAGNESIUM DESIGN INST. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 110001 Heping Street, Heping District, Liaoning, Shenyang, No. 184 Patentee after: Shenyang Aluminum & Magnesium Engineering & Research Institute Co., Ltd. Address before: 110001 Heping Street, Heping District, Liaoning, Shenyang, No. 184 Patentee before: Shenyang Aluminium and Magnesium Design Institute |
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| CX01 | Expiry of patent term |
Granted publication date: 20101117 |
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| CX01 | Expiry of patent term |