CN114381764A - Aluminum electrolysis cell control method based on material balance control technology - Google Patents
Aluminum electrolysis cell control method based on material balance control technology Download PDFInfo
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- CN114381764A CN114381764A CN202210121615.4A CN202210121615A CN114381764A CN 114381764 A CN114381764 A CN 114381764A CN 202210121615 A CN202210121615 A CN 202210121615A CN 114381764 A CN114381764 A CN 114381764A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/20—Automatic control or regulation of cells
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Abstract
The invention discloses an aluminum electrolytic cell control method based on a material balance control technology, which comprises an electrolytic cell, a crust breaking hammer head, a material port, an electromagnetic valve, an air pipe, a blanking controller, a control system and a height acquisition voltage module, wherein the crust breaking hammer head is arranged on the electrolytic cell; the aluminum electrolysis cell control method is as follows: the method comprises the steps that the voltage of short circuit ports of a plurality of upright post buses is collected simultaneously through a height collecting voltage module; sending the acquired short-circuit port voltage data to a control system; after the control system receives the short-circuit port voltage data, the control system controls the polar distance and the heat balance through high-speed acquisition of the cell voltage, so that the adjustment of the blanking rate is realized, the process parameters of the alumina processing interval and the fluoride salt interval are set, and the data are sent to a blanking controller through the control system to adjust the material quantity; the method adopts a control baseline to determine a target, takes a normal period as a main part, and takes the control adjustment of upper and lower limit areas of a double gauge as an auxiliary part; and (3) joint analysis and adjustment of charging strategy conversion and polar distance adjustment, preferential polar distance regression of abnormal areas and matched charging strategy adjustment.
Description
Technical Field
The invention relates to the technical field of automatic control of aluminum electrolysis, in particular to an aluminum electrolysis cell control method based on a material balance control technology.
Background
The aluminum electrolysis control system is a very complex industrial process control system with nonlinearity, multivariable, cross interference, effect lag and boundary uncertainty. In recent years, along with the increasing of tank types, a control technology has no new breakthrough, the electrolytic tank has the problems that the electrolyte concentration is higher and higher, the processing interval cannot be adjusted upwards, large heads are particularly large, the material opening is blocked quickly by the material below the material opening, the tank condition looks good, and the efficiency cannot be improved. The ideal control effect is difficult to achieve by using the conventional control technology, and the application of the control technology needs to be broken through urgently.
Therefore, a method for controlling an aluminum electrolysis cell based on a material balance control technology becomes a problem to be solved urgently.
Disclosure of Invention
The invention aims to solve the technical problems that along with the continuous increase of the tank type in recent years, the control technology has no new breakthrough, the electrolyte concentration of the electrolytic tank is higher and higher, the processing interval cannot be adjusted upwards, the large heads are particularly large, the material opening is quickly blocked by the material under the material opening, the tank condition looks good, and the efficiency cannot be improved. The ideal control effect is difficult to achieve by using the conventional control technology, and the application of the control technology needs to be broken through urgently.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the aluminum electrolysis cell control method based on the material balance control technology comprises an electrolysis cell, a crust-breaking hammer head, a material port, an electromagnetic valve, an air pipe, a blanking controller, a control system and a high-speed acquisition voltage module, wherein the crust-breaking hammer head and the material port are arranged in the electrolysis cell;
the aluminum electrolytic cell control method is as follows:
and 3, after the control system receives the voltage data of the short circuit port, the control system controls the polar distance and the heat balance through high-speed acquisition of the tank voltage, so that the adjustment of the blanking rate is realized, the process parameters of the alumina processing interval and the villiaumite interval are set, and the data are transmitted to a blanking controller through the control system to adjust the material quantity.
Further, the quantity of material mouth is 1 at least, the quantity of crust-breaking tup is 1 at least, the quantity of solenoid valve is 1 at least, the quantity of tuber pipe is 1 at least.
Furthermore, the material opening is matched with the crust breaking hammer head.
Further, the pipeline is matched with the air pipe.
Compared with the prior art, the invention has the advantages that: the invention adopts the cooperation of an electrolytic bath, a crust breaking hammer head, a material port, an electromagnetic valve, an air pipe, a blanking controller, a control system and a height acquisition voltage module, adopts a control baseline to determine a target, takes a normal period as a main part and takes the control adjustment of upper and lower limit areas of a double gauge as an auxiliary part; the feeding strategy conversion and the polar distance adjustment are jointly analyzed and combined adjusted, the polar distance of an abnormal area is preferentially regressed, and the matched feeding strategy is adjusted; according to the detection control system, only the normal period is carried out, and the increase and decrease amount is used for verification when a certain time is reached, and the increment is the number of times of material feeding in unit time; the reduction of the number of blanking times in unit time is the decrement, and the control effect is greatly improved; the invention has reasonable design and is worth popularizing.
Drawings
FIG. 1 is a schematic structural diagram of an aluminum electrolysis cell control method based on a material balance control technology.
FIG. 2 is a control effect diagram of the aluminum electrolysis cell control method based on the material balance control technology.
FIG. 3 is a functional relationship diagram of the cell pressure in the aluminum electrolysis cell control method based on the material balance control technology.
As shown in the figure: 1. the device comprises an electrolytic cell, 2, a crust breaking hammer head, 3, a material port, 4, an electromagnetic valve, 5, an air pipe, 6, a blanking controller, 7, a control system, 8, a height acquisition voltage module, 9 and a pipeline.
Detailed Description
The aluminum electrolysis cell control method based on the material balance control technology of the invention is further described in detail with reference to the accompanying drawings.
The present invention will be described in detail with reference to the accompanying fig. 1 to 3.
An aluminum electrolysis cell control method based on a material balance control technology comprises an electrolysis cell 1, a crust breaking hammer head 2, a material port 3, an electromagnetic valve 4, an air pipe 5, a blanking controller 6, a control system 7 and a height acquisition voltage module 8, wherein the crust breaking hammer head 2 and the material port 3 are arranged in the electrolysis cell 1, the electromagnetic valve 4 is arranged above the electrolysis cell 1, one end of the crust breaking hammer head 2 is arranged above the material port 3, the other end of the crust breaking hammer head is communicated with the air pipe 5 through a pipeline 9, the electromagnetic valve 4 is arranged on the pipeline 9, the other end of the air pipe 5 is connected with the blanking controller 6, the high-speed acquisition voltage module 8 is arranged at the bottom of the electrolysis cell 1, an output port of the high-speed acquisition voltage module 8 is electrically connected with an input port of the control system 7, and an output port of the control system 7 is electrically connected with an input port of the blanking controller 6;
the aluminum electrolytic cell control method is as follows:
and 3, after the control system 7 receives the short-circuit port voltage data, the control system 7 controls the polar distance and the heat balance through high-speed acquisition of the tank voltage, so that the adjustment of the blanking rate is realized, the process parameters of the alumina processing interval and the fluoride salt interval are set, and the data are sent to a blanking controller through the control system to adjust the material quantity.
The quantity of material mouth 3 is 1 at least, the quantity of crust-breaking tup 2 is 1 at least, the quantity of solenoid valve 4 is 1 at least, the quantity of tuber pipe 5 is 1 at least.
The material port 3 is matched with the crust breaking hammer head 2.
The pipeline 9 is matched with the air pipe 5.
The specific implementation process of the aluminum electrolysis cell control method based on the material balance control technology is as follows: the voltage of the short circuit ports of the plurality of upright post buses is collected simultaneously through the height collecting voltage module 8; sending the collected voltage data of the short circuit port to a control system 7; after the control system 7 receives the short-circuit port voltage data, the control system 7 controls the polar distance and the heat balance through high-speed acquisition of the cell voltage, so that the adjustment of the blanking rate is realized, the process parameters of the alumina processing interval and the fluoride salt interval are set, and the data are sent to the blanking controller through the control system to adjust the material quantity.
As shown in FIG. 3, the formation of a composite result is the composite action or reaction of the effects of multiple influencing factors, if the data is sufficient, dense enough and long enough, the model is relatively fixed on certain rules, and the results can be positively evaluated by knowing the influencing factors; on the contrary, knowing the result, a plurality of influencing factors can be simulated reversely. Cell pressure is a typical example in the cell collection data. The relationship is, for example:
f(x)＝G1 f1(x1)+G2 f2(x2)+……+Gn fn(xn)+C
f(x)＝(G1f1(x1)+G2 f2(x2))(G2f2(x2)+G3f3(x3))*……(G(n-1)f(n-1)(x(n-1))+Gnfn(xn))+C
wherein f (x) the composite value; f1(x1), f2(x2), … …, fn (xn) are monofactorial values; g1, G2, … … and Gn are factor influence coefficients; c is a comprehensive adjusting constant;
the invention adopts the cooperation of an electrolytic bath 1, a crust breaking hammer 2, a material port 3, an electromagnetic valve 4, an air pipe 5, a blanking controller 6, a control system 7 and a height acquisition voltage module 8, adopts a control baseline to determine a target, takes a normal period as a main part and takes the control adjustment of upper and lower limit areas of a double gauge as an auxiliary part; the feeding strategy conversion and the polar distance adjustment are jointly analyzed and combined adjusted, the polar distance of an abnormal area is preferentially regressed, and the matched feeding strategy is adjusted; according to the detection control system, only the normal period is carried out, and the increase and decrease amount is used for verification when a certain time is reached, and the increment is the number of times of material feeding in unit time; the reduction of the number of blanking times in unit time is the decrement, and the control effect is greatly improved; the invention has reasonable design and is worth popularizing.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. The aluminum electrolytic cell control method based on the material balance control technology comprises an electrolytic cell (1), a crust breaking hammer head (2), a material port (3), an electromagnetic valve (4), an air pipe (5), a blanking controller (6), a control system (7) and a highly-collected voltage module (8), and is characterized in that: the crust breaking hammer head (2) and the material opening (3) are arranged in the electrolytic bath (1), the electromagnetic valve (4) is arranged above the electrolytic bath (1), one end of the crust breaking hammer head (2) is arranged above the material opening (3), the other end of the crust breaking hammer head is communicated with the air pipe (5) through a pipeline (9), the electromagnetic valve (4) is arranged on the pipeline (9), the other end of the air pipe (5) is connected with the blanking controller (6), the high-speed acquisition voltage module (8) is arranged at the bottom of the electrolytic bath (1), the output port of the high-speed acquisition voltage module (8) is electrically connected with the input port of the control system (7), and the output port of the control system (7) is electrically connected with the input port of the blanking controller (6);
the aluminum electrolytic cell control method is as follows:
step 1, a plurality of column bus short circuit port voltages are simultaneously acquired through a height acquisition voltage module (8);
step 2, transmitting the acquired short-circuit port voltage data to a control system (7);
and 3, after the control system (7) receives the voltage data of the short circuit port, the control system (7) controls the polar distance and the heat balance through high-speed acquisition of the tank voltage, so that the adjustment of the blanking rate is realized, the process parameters of the alumina processing interval and the villiaumite interval are set, and the data are transmitted to a blanking controller through the control system to adjust the material quantity.
2. The aluminum electrolysis cell control method based on the material balance control technology as claimed in claim 1, wherein: the quantity of material mouth (3) is 1 at least, the quantity of crust-breaking tup (2) is 1 at least, the quantity of solenoid valve (4) is 1 at least, the quantity of tuber pipe (5) is 1 at least.
3. The aluminum electrolysis cell control method based on the material balance control technology as claimed in claim 1, wherein: the material port (3) is matched with the crust breaking hammer head (2).
4. The aluminum electrolysis cell control method based on the material balance control technology as claimed in claim 1, wherein: the pipeline (9) is matched with the air pipe (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210121615.4A CN114381764A (en) | 2022-02-09 | 2022-02-09 | Aluminum electrolysis cell control method based on material balance control technology |
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| CN202210121615.4A CN114381764A (en) | 2022-02-09 | 2022-02-09 | Aluminum electrolysis cell control method based on material balance control technology |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119897A (en) * | 2016-08-19 | 2016-11-16 | 河南科达东大国际工程有限公司 | A kind of electrolyzer electric flow distribution and safety monitoring system and electrolytic aluminium equipment |
| CN109023429A (en) * | 2018-10-30 | 2018-12-18 | 陈兆娜 | A kind of aluminium cell intelligence crust breaking and intelligent feeding system and method |
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2022
- 2022-02-09 CN CN202210121615.4A patent/CN114381764A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119897A (en) * | 2016-08-19 | 2016-11-16 | 河南科达东大国际工程有限公司 | A kind of electrolyzer electric flow distribution and safety monitoring system and electrolytic aluminium equipment |
| CN109023429A (en) * | 2018-10-30 | 2018-12-18 | 陈兆娜 | A kind of aluminium cell intelligence crust breaking and intelligent feeding system and method |
Non-Patent Citations (4)
| Title |
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| 刘金贵: "计算机控制铝电解生产数据采集系统的实践", 《电子仪器仪表用户》 * |
| 张生凯等: "铝电解槽异常电压原因分析及处理措施探讨", 《金属世界》 * |
| 张金平等: "新型铝电解槽控制系统", 《冶金自动化》 * |
| 袁艳等: "先进控制技术在预焙铝电解过程控制中的应用", 《计算机测量与控制》 * |
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