CN109371428B - Device and method for automatically detecting superheat degree and electrolysis temperature of aluminum electrolyte - Google Patents
Device and method for automatically detecting superheat degree and electrolysis temperature of aluminum electrolyte Download PDFInfo
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- CN109371428B CN109371428B CN201811556218.XA CN201811556218A CN109371428B CN 109371428 B CN109371428 B CN 109371428B CN 201811556218 A CN201811556218 A CN 201811556218A CN 109371428 B CN109371428 B CN 109371428B
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 94
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 92
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 239000003792 electrolyte Substances 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000007405 data analysis Methods 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 238000004458 analytical method Methods 0.000 claims abstract description 9
- 239000013078 crystal Substances 0.000 claims description 18
- 230000009977 dual effect Effects 0.000 claims description 14
- 239000000523 sample Substances 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 10
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/026—Means for indicating or recording specially adapted for thermometers arrangements for monitoring a plurality of temperatures, e.g. by multiplexing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention belongs to the technical field of inorganic chemistry, and particularly relates to a device and a method for automatically detecting the superheat degree and the electrolysis temperature of an aluminum electrolyte. When the aluminum electrolysis cell is used for replacing an anode, the double sensors for detecting the superheat degree and the electrolysis temperature of the aluminum electrolyte are pricked into the electrolyte, measurement data are sent to a data analysis system through a data transmission system, the superheat degree and the electrolysis temperature of the aluminum electrolyte are obtained through analysis of the data analysis system, and analysis results are sent to a cell control system of the aluminum electrolysis cell through the data transmission system. The method monitors the superheat degree of the electrolyte and the electrolysis temperature in real time and sends data to the tank control system, thereby reducing the labor intensity of workers and improving the labor productivity and the intelligent control level of the electrolytic tank.
Description
Technical Field
The invention belongs to the technical field of inorganic chemistry, and particularly relates to a device and a method for automatically detecting the superheat degree and the electrolysis temperature of an aluminum electrolyte.
Background
In recent years, with the rapid development of the electrolytic aluminum industry in China, the yield of raw aluminum is dramatically increased. The automation and unmanned requirements for the electrolytic production of aluminum are increasing. In the electrolytic production process, in order to ensure the stable operation of the electrolytic tank, the material balance and the heat balance of the electrolytic tank need to be kept. At present, material balance is realized by a computer control technology, and for heat balance, although a plurality of control technologies are adopted, the credibility and the effectiveness of the control effect are affected because the temperature parameters of the electrolyte cannot be provided timely.
The superheat degree and the electrolysis temperature of the aluminum electrolyte are important heat parameters in the aluminum smelting process. The superheat degree and the electrolysis temperature are closely related to the heat balance of the electrolytic tank in the electrolysis process, the superheat degree of the electrolyte is increased, the carbon consumption is increased, the ledge is thinned, and the stretching leg is shortened; the electrolyte superheat degree is reduced, the ledge is thickened, and the extension leg is prolonged. Thus, the electrolyte melt temperature directly affects the thermal stability and current efficiency of the cell and even affects cell life.
At present, the measurement of the aluminum electrolysis temperature is still manual measurement, namely, a worker breaks open the electrolyte shell surface firstly, then inserts a thermocouple into the electrolyte for measurement, and finally inputs the measured value into a computer. The measuring method needs a lot of manpower and time, and has the advantages of high labor intensity and low working efficiency. And the measurement result cannot enter the control system in real time, and electrolyte molecules are manually sampled and analyzed to indirectly control the superheat degree of the electrolyte, so that incomplete aluminum electrolysis control information can be caused, and the manual input data is delayed, so that the aluminum electrolysis production is influenced.
Disclosure of Invention
First, the technical problem to be solved
Aiming at the existing technical problems, the invention provides a device and a method for automatically detecting the superheat degree and the electrolysis temperature of an aluminum electrolyte, and the method can monitor the superheat degree and the electrolysis temperature of the electrolyte in real time and send data to a tank control system, thereby reducing the labor intensity of workers and improving the labor productivity and the intelligent control level of an electrolysis tank.
(II) technical scheme
In order to achieve the above purpose, the main technical scheme adopted by the invention comprises the following steps:
The invention provides a device for automatically detecting the superheat degree and the electrolysis temperature of aluminum electrolyte, which comprises a double sensor, a data transmission system, a data analysis system and an aluminum electrolysis multifunctional crown block; the double sensors are arranged on the aluminum electrolysis multifunctional crown block, and the data transmission system and the data analysis system are arranged in a control instrument box of the aluminum electrolysis multifunctional crown block;
The multifunctional crown block for aluminum electrolysis is manually operated, and the double sensors are driven to enter and exit the aluminum electrolyte through a preset program;
the dual sensor comprises a first sensor and a second sensor, wherein the first sensor and the second sensor are used for measuring primary crystal temperature and electrolysis temperature of aluminum electrolyte;
The dual sensors are connected with the data transmission system, and the data transmission system is connected with the data analysis system.
Preferably, the data analysis system comprises an analysis instrument, one end of the analysis instrument is connected with the data transmission system, and the other end of the analysis instrument is connected with a computer.
Preferably, the analysis instrument is a thermocouple module and a potentiometer, or a thermocouple module and a multimeter.
The apparatus as described above, preferably, the data transmission system includes a compensation wire having one end connected to the dual sensor and the other end connected to the analysis instrument.
The invention also provides a method for automatically detecting the superheat degree and the electrolysis temperature of the aluminum electrolyte by adopting the device in any scheme, which comprises the following steps:
S1, mounting a dual sensor for measuring primary crystal temperature and electrolysis temperature of aluminum electrolyte on an aluminum electrolysis multifunctional crown block, and mounting a data transmission system and a data analysis system in a control instrument box of the aluminum electrolysis multifunctional crown block;
s2, when the anode replacement operation of the aluminum electrolysis cell is performed, the probes of the double sensors automatically descend and prick into the electrolyte to perform measurement, and after the measurement is finished, the probes are automatically lifted;
s3, transmitting the measured data to a data analysis system through the data transmission system, and analyzing the data analysis system to obtain primary crystal temperature, electrolysis temperature and superheat degree of the electrolyte of the aluminum electrolysis cell;
s4, the data analysis system directly transmits the information of the primary crystal temperature, the electrolysis temperature and the superheat degree of the electrolyte of the aluminum electrolysis cell to a cell control system connected with the electrolyte through a network.
The double sensors comprise a first temperature sensor and a second temperature sensor, the double sensors transmit measured data to a data analysis system through a data transmission system, and the data analysis system obtains the electrolysis temperature, the primary crystal temperature and the superheat degree (namely, the difference between the electrolysis temperature and the primary crystal temperature) of the aluminum electrolyte.
As with the method described above, the dual sensor probe preferably has a penetration depth of 5cm to 15cm into the electrolyte.
As with the method described above, the dual sensor probe is preferably inserted into the electrolyte for a period of 1min to 3min.
(III) beneficial effects
The beneficial effects of the invention are as follows:
1. according to the method provided by the invention, the double sensors are automatically operated by the multifunctional crown block to detect the superheat degree and the electrolysis temperature of the aluminum electrolyte, so that the labor intensity of workers is reduced, the labor productivity is improved, the current efficiency is improved, and the energy consumption of aluminum electrolysis is reduced.
2. According to the method provided by the invention, the sensor is arranged on the multifunctional crown block, and the measurement is carried out when the pole change of the aluminum electrolysis cell is intermittent, so that the labor productivity and the intelligent control level of the electrolysis cell are greatly improved.
3. The method provided by the invention can monitor the superheat degree and the electrolysis temperature of the electrolyte on site on line, directly feed back the measurement result to the cell control machine, and the cell control machine directly controls the aluminum electrolysis production by using important superheat degree information and temperature information, thereby having an important effect on the intelligent control of the aluminum electrolysis production.
4. The method provided by the invention solves the problems in the aluminum electrolysis industry, increases the benefit and improves the technical level of the aluminum electrolysis industry in China based on the purpose of automatically measuring the superheat degree and the electrolysis temperature of the aluminum electrolyte.
5. The method provided by the invention can effectively solve the problems caused by untimely measurement of the superheat degree and the electrolysis temperature of the aluminum electrolyte, better control the energy balance and the material balance of the electrolytic tank, improve the labor productivity, reduce the energy consumption of the electrolytic aluminum production, improve the current efficiency, and is suitable for application and popularization in industrial production.
Drawings
FIG. 1 is a schematic view of an apparatus according to the present invention.
[ Reference numerals description ]
2: A first temperature sensor; 3: compensating wires; 4: a data analysis system; 5: a protective sleeve; 6: and a second temperature sensor.
Detailed Description
The invention will be better explained by the following detailed description of the embodiments with reference to the drawings.
Example 1
Referring to fig. 1, a schematic diagram of an apparatus for automatically detecting the superheat degree and the electrolysis temperature of an aluminum electrolyte in the present invention is shown, which includes a first temperature sensor 2, a second temperature sensor 6, a data transmission system, a data analysis system 4 and an aluminum electrolysis multifunctional crown block. The data transmission system comprises a compensation conductor 3. The multifunctional crown block for aluminum electrolysis is manually operated, and the first temperature sensor 2 and the second temperature sensor 6 are driven to enter and exit the aluminum electrolyte through a preset program.
The first temperature sensor 2 and the second temperature sensor 6 are fixed in the protective sleeve 5 and are arranged on an automatic lifting device of the aluminum electrolysis multifunctional crown block. The top ends of the first temperature sensor 2 and the second temperature sensor 6 are connected with a compensation wire 3, and the other end of the compensation wire 3 is connected with a data analysis system 4. The compensation lead 3 and the data analysis system 4 are arranged in a control instrument box of the aluminum electrolysis multifunctional crown block. Preferably, the data analysis system 4 comprises an analysis instrument, which is a thermocouple module and a potentiometer, or a thermocouple module and a multimeter. One end of the thermocouple module, the potentiometer and the universal meter is connected with the first temperature sensor 2 and the second temperature sensor 6 through the compensation lead 3, and the other end is connected with the computer.
During the measurement, the first temperature sensor 2 and the second temperature sensor 6 are used to measure the primary crystal temperature and the electrolysis temperature of the aluminum electrolyte. The compensation lead 3 transmits thermoelectric signals detected by the first temperature sensor 2 and the second temperature sensor 6 to a potentiometer or a multimeter, and the potentiometer or the multimeter displays the thermoelectric signals as potential data; the compensation wire 3 transmits the thermoelectric signals detected by the first temperature sensor 2 and the second temperature sensor 6 to a thermocouple module, which converts the thermoelectric signals into temperature data.
The first temperature sensor 2 and the second temperature sensor 6 are inserted into aluminum electrolyte to measure the temperature of the electrolyte, the temperature of the double sensors is recorded through a thermocouple module, and a temperature-time relation curve is established to obtain the primary crystal temperature and the electrolysis temperature of the aluminum electrolyte.
The method for automatically detecting the superheat degree and the electrolysis temperature of the aluminum electrolyte comprises the following specific steps:
S1, installing a double sensor for measuring the primary crystal temperature and the electrolysis temperature of the aluminum electrolyte on the aluminum electrolysis multifunctional crown block, wherein one end of a compensation wire 3 is connected with the double sensor, the other end of the compensation wire is connected with a potentiometer, and the compensation wire 3 and the potentiometer are installed in a control instrument box of the aluminum electrolysis multifunctional crown block.
S2, when the aluminum cell is operated to replace the anode, an operator operates a lifting device of the multifunctional crown block of the aluminum cell (wherein a manually preset program of the multifunctional crown block of the aluminum cell can control the depth and time of the lifting device entering the aluminum electrolyte), a probe of a dual sensor for detecting the electrolytic temperature and the primary crystal temperature of the aluminum electrolyte is pricked into the aluminum electrolyte at a position of 5cm, the position is kept for 2 minutes, potential data is displayed by a potentiometer, and the lifting device of the multifunctional crown block of the aluminum cell drives the dual sensor to automatically lift and leave the aluminum electrolyte.
And S3, a thermocouple module connected with the computer obtains temperature data (namely, the electrolysis temperature and the primary crystal temperature of the electrolyte) through double sensors and automatically calculates to obtain the superheat degree of the aluminum electrolyte (namely, the difference between the electrolysis temperature and the primary crystal temperature of the electrolyte).
And S4, directly transmitting the obtained electrolysis temperature, primary crystal temperature and overheat data to a cell control system (namely a cell control machine) of the aluminum electrolysis cell through network connection by a computer.
The aluminum electrolysis cell control system directly controls the aluminum electrolysis production by utilizing important superheat degree information and temperature information, and plays an important role in intelligent control of the aluminum electrolysis production.
Example 2
In a 300KA series one cell test in an aluminum mill, the temperature of the electrolyte in the cell was 942 c, the primary temperature of the electrolyte was 933 c, and the degree of superheat was 9 c, as measured using the apparatus of example 1 of the present invention. The measured electrolyte temperature is consistent with the electrolysis temperature displayed by the tank control box.
Part of electrolyte is sampled from the electrolytic tank, and the primary crystal temperature of the electrolyte is 933.4 ℃ measured by a step-cooling curve method, namely the superheat degree of the electrolytic tank is 8.6 ℃. The test result of the device for automatically detecting the superheat degree and the electrolysis temperature of the aluminum electrolyte is similar to the result obtained by the traditional experimental technology, and the measurement error is within the range of the couple error.
In summary, the method for automatically detecting the superheat degree and the electrolysis temperature of the aluminum electrolyte provided by the invention is based on the purpose of automatically measuring the superheat degree and the electrolysis temperature of the aluminum electrolyte, the double sensors are arranged on the multifunctional crown block, when the pole change of the aluminum electrolysis cell is intermittent, the double sensors are automatically operated by the multifunctional crown block, the probes of the double sensors for detecting the superheat degree and the electrolysis temperature of the aluminum electrolyte are pricked into the aluminum liquid, the superheat degree and the electrolysis temperature of the electrolyte can be monitored on site, the measurement result is directly fed back to the cell control machine, the cell control machine directly controls the aluminum electrolysis production by utilizing important superheat degree information and temperature information, the labor intensity of workers is reduced, the current efficiency is improved, the energy consumption of the aluminum electrolysis is reduced, and the labor productivity and the intelligent control level of the electrolysis cell are greatly improved. Meanwhile, the method can effectively solve the problems caused by untimely measurement of the superheat degree and the electrolysis temperature of the aluminum electrolyte, better control the energy balance and the material balance of the electrolytic tank, improve the labor productivity, play an important role in intelligent control of aluminum electrolysis production, solve the problems for the aluminum electrolysis industry, increase the benefit and improve the technical level of the aluminum electrolysis industry in China.
The technical principles of the present invention have been described above in connection with specific embodiments, which are provided for the purpose of explaining the principles of the present invention and are not to be construed as limiting the scope of the present invention in any way. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (6)
1. The method comprises a dual sensor, a data transmission system, a data analysis system and an aluminum electrolysis multifunctional crown block; the double sensors are arranged on the aluminum electrolysis multifunctional crown block, and the data transmission system and the data analysis system are arranged in a control instrument box of the aluminum electrolysis multifunctional crown block;
The multifunctional crown block for aluminum electrolysis is manually operated, and the double sensors are driven to enter and exit the aluminum electrolyte through a preset program;
the dual sensor comprises a first sensor and a second sensor, wherein the first sensor and the second sensor are used for measuring primary crystal temperature and electrolysis temperature of aluminum electrolyte;
the double sensors are connected with the data transmission system, and the data transmission system is connected with the data analysis system;
The first sensor and the second sensor are fixed in a protective sleeve;
The method for automatically detecting the superheat degree and the electrolysis temperature of the aluminum electrolyte comprises the following steps:
S1, mounting a dual sensor for measuring primary crystal temperature and electrolysis temperature of aluminum electrolyte on an aluminum electrolysis multifunctional crown block, and mounting a data transmission system and a data analysis system in a control instrument box of the aluminum electrolysis multifunctional crown block;
s2, when the anode replacement operation of the aluminum electrolysis cell is performed, the probes of the double sensors automatically descend and prick into the electrolyte to perform measurement, and after the measurement is finished, the probes are automatically lifted;
s3, transmitting the measured data to a data analysis system through the data transmission system, and analyzing the data analysis system to obtain primary crystal temperature, electrolysis temperature and superheat degree of the electrolyte of the aluminum electrolysis cell;
s4, the data analysis system directly transmits the information of the primary crystal temperature, the electrolysis temperature and the superheat degree of the electrolyte of the aluminum electrolysis cell to a cell control system connected with the electrolyte through a network.
2. The method of claim 1, wherein the data analysis system comprises an analysis instrument connected at one end to the data transmission system and at the other end to a computer.
3. The method of claim 2, wherein the analytical instrument is or is a thermocouple module and a potentiometer.
4. The method of claim 2, wherein the data transmission system comprises a compensation wire having one end connected to the dual sensor and another end connected to the analytical instrument.
5. The method of claim 1, wherein the dual sensor probe is threaded into the electrolyte to a depth of 5cm to 15cm.
6. The method of claim 1, wherein the dual sensor probe is inserted into the electrolyte for a period of time ranging from 1min to 3min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811556218.XA CN109371428B (en) | 2018-12-19 | 2018-12-19 | Device and method for automatically detecting superheat degree and electrolysis temperature of aluminum electrolyte |
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| CN201811556218.XA CN109371428B (en) | 2018-12-19 | 2018-12-19 | Device and method for automatically detecting superheat degree and electrolysis temperature of aluminum electrolyte |
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| CN109371428A CN109371428A (en) | 2019-02-22 |
| CN109371428B true CN109371428B (en) | 2024-04-26 |
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