CN114740289A - Aluminum electrolysis current efficiency testing method and related equipment - Google Patents

Aluminum electrolysis current efficiency testing method and related equipment Download PDF

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CN114740289A
CN114740289A CN202210240517.2A CN202210240517A CN114740289A CN 114740289 A CN114740289 A CN 114740289A CN 202210240517 A CN202210240517 A CN 202210240517A CN 114740289 A CN114740289 A CN 114740289A
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李昌林
王俊青
方斌
陈开斌
张旭贵
罗丽芬
王俊伟
张芳芳
吴许建
常高卿
石序
张芬萍
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Abstract

The application discloses a method and related equipment for testing aluminum electrolysis current efficiency, relates to the technical field of aluminum electrolysis, and can improve the testing precision of the aluminum electrolysis current efficiency. The aluminum electrolysis current efficiency testing method comprises the following steps: detecting CO in aluminum electrolysis cell2、CO、N2、O2And a gas volume fraction of a noble gas; according to the CO in the aluminum electrolytic cell2、CO、N2、O2And the gas volume fraction of the rare gas, and calculating the aluminum electrolysis current efficiency.

Description

Aluminum electrolysis current efficiency testing method and related equipment
Technical Field
The application relates to the technical field of aluminum electrolysis, in particular to a method for testing the current efficiency of aluminum electrolysis and related equipment.
Background
The current efficiency of aluminum electrolysis is an important economic and technical index of aluminum electrolysis production and an important basis for enterprises to adjust process parameters. The existing method for testing the current efficiency of aluminum electrolysis by adopting a gas analysis method is based on CO in anode gas2The relation between the concentration and the current efficiency is obtained by collecting the gas escaping in the electrolytic process and analyzing the gas concentration.
However, the existing gas analysis method is easily affected by the aluminum electrolysis production process, equipment or environment during the field test, resulting in low accuracy of the test result.
Disclosure of Invention
The embodiment of the application provides an aluminum electrolysis current efficiency testing method and related equipment, which can improve the testing precision of aluminum electrolysis current efficiency.
In a first aspect of the embodiments of the present application, a method for testing aluminum electrolysis current efficiency is provided, including:
detecting CO in aluminum electrolysis cell2、CO、N2、O2And a gas volume fraction of a noble gas;
according to the CO in the aluminum electrolytic cell2、CO、N2、O2And the gas volume fraction of the rare gas, calculating the aluminum electrolysis current efficiency.
In some embodiments, the method comprises introducing CO into the aluminum reduction cell2、CO、N2、O2And the gas volume fraction of the rare gas, before calculating the aluminum electrolysis current efficiency, further comprising:
detecting N in an atmospheric environment2、O2And a gas volume fraction of a noble gas;
according to the CO in the aluminum electrolytic cell2、CO、N2、O2And the gas volume fraction of the rare gas, calculating the aluminum electrolysis current efficiency, comprising:
according to the CO in the aluminum electrolytic cell2、CO、N2、O2And the gas volume fraction of the rare gas and N in the atmospheric environment2、O2And gas volume fraction of rare gas, calculating the aluminum electrolysis current efficiency.
In some embodiments, the method comprises introducing CO into the aluminum reduction cell2、CO、N2、O2And the gas volume fraction of the rare gas and N in the atmospheric environment2、O2And a gas volume fraction of a noble gas, calculating the aluminum electrolysis current efficiency, comprising:
according to the CO in the aluminum electrolytic cell2、CO、N2、O2And the gas volume fraction of the rare gas and N in the atmospheric environment2、O2And a gas volume fraction of a noble gas, the aluminum electrolysis current efficiency being calculated according to the following formula:
η＝(％CO2)/{(％CO2)+(％CO)-2[(％O2 blank)×[(％N2)+(％GRare)]/[(％N2 blank (blank))+(％GRare blank)]-(％O2)]}/2+50％+m，
Wherein eta is the aluminum electrolysis current efficiency, m is the correction coefficient,% CO2For the CO in the aluminum electrolytic cell2Gas volume fraction of (2)% CO is the gas volume fraction of CO in the aluminum electrolysis cell,% O2For the interior of the aluminum electrolytic cell O2Gas volume fraction of,% N2Is N in the aluminum electrolytic cell2Gas volume fraction,% GRareIs the gas volume fraction,% N, of the rare gas in the aluminum electrolysis cell2 blankIs N in the atmospheric environment2Gas volume fraction,% O2 blankIs O in the atmospheric environment2Gas volume fraction,% GRare blankIs the gas volume fraction of the noble gas in the atmospheric environment.
In some embodiments, the detecting CO in the aluminum electrolysis cell2、CO、N2、O2And a gas volume fraction of a noble gas, further comprising:
collecting gas at a collecting hole of the aluminum electrolytic cell to obtain sampled gas;
the detection of CO in the aluminum electrolytic cell2、CO、N2、O2And a gas volume fraction of a noble gas comprising:
detecting CO in the sample gas2、CO、N2、O2And the gas volume fraction of the noble gas.
In some embodiments, the number of the collecting holes of each of the aluminum reduction cells is greater than or equal to 2;
the collecting the gas at the collecting hole of the aluminum electrolytic cell to obtain the sampled gas comprises the following steps:
and collecting gas at the collecting holes of the aluminum electrolysis cell according to a first set frequency in a first set time period to obtain corresponding sampled gas, wherein the frequency of collecting gas by each collecting hole is more than or equal to 3.
In some embodiments, the detecting CO in the aluminum electrolysis cell2、CO、N2、O2And a gas volume fraction of a noble gas comprising:
detecting CO at the detection port of the aluminum electrolytic cell within a second set time period according to a second set frequency2、CO、N2、O2And an average value of gas volume fractions of the rare gas in a third set period of time, respectively, wherein the third set period of time is shorter than the second set period of time, and the number of detections in each detection port is greater than or equal to 3.
In some embodiments, the aluminum electrolysis current efficiency testing method further comprises:
and calculating the average value of the current efficiency of the aluminum electrolysis to obtain the average value of the current efficiency.
In a second aspect of the embodiments of the present application, there is provided an aluminum electrolysis current efficiency testing apparatus, including:
a detection module for detecting CO in the aluminum electrolytic cell2、CO、N2、O2And a gas volume fraction of a noble gas;
an operation module for calculating the CO content in the aluminum cell2、CO、N2、O2And the gas volume fraction of the rare gas, calculating the aluminum electrolysis current efficiency.
In a third aspect of embodiments of the present application, there is provided an electronic device, including:
a memory having a computer program stored therein;
a processor for implementing the method for testing aluminum electrolysis current efficiency according to the first aspect when executing the computer program.
In a fourth aspect of the embodiments of the present application, a computer-readable storage medium is provided, where a computer program is stored, and when the computer program is executed by a processor, the method for testing aluminum electrolysis current efficiency according to the first aspect is implemented.
The method and the related equipment for testing the current efficiency of the aluminum electrolysis provided by the embodiment of the application detect CO in the aluminum electrolysis cell2、CO、N2、O2And gas volume fraction of rare gas, component N in air2、O2According to the CO in the aluminium electrolysis cell, taking into account the gas volume fraction of the rare gas2、CO、N2、O2And gas volume fraction of rare gas, calculating aluminumCurrent efficiency of electrolysis. For N2、O2And detection of rare gas, can avoid influence of CO due to mixing of air components2Gas volume fraction of (2), testing that CO can be avoided due to C and O2Or C and CO for CO2The concentration influence of the aluminum electrolysis current is avoided, the problem that the test result is obviously low due to the influence of fire holes, processes and the like in the conventional method is solved, and the test precision of the aluminum electrolysis current efficiency can be improved.
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Fig. 1 is a schematic flow chart of a method for testing aluminum electrolysis current efficiency provided in an embodiment of the present application;
fig. 2 is a schematic structural block diagram of an aluminum electrolysis current efficiency testing apparatus provided in an embodiment of the present application;
fig. 3 is a schematic structural block diagram of an electronic device according to an embodiment of the present application;
fig. 4 is a schematic structural block diagram of a computer-readable storage medium according to an embodiment of the present application.
Detailed Description
In order to better understand the technical solutions provided by the embodiments of the present specification, the technical solutions of the embodiments of the present specification are described in detail below with reference to the accompanying drawings and specific embodiments, and it should be understood that the specific features of the embodiments and examples of the present specification are detailed descriptions of the technical solutions of the embodiments of the present specification, and are not limitations on the technical solutions of the embodiments, and the technical features of the embodiments and examples of the present specification may be combined with each other without conflict.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. The term "two or more" includes the case of two or more.
In a first aspect of the embodiments of the present application, a method for testing aluminum electrolysis current efficiency is provided, and fig. 1 is a schematic flow chart of the method for testing aluminum electrolysis current efficiency provided in the embodiments of the present application. As shown in fig. 1, the method for testing aluminum electrolysis current efficiency provided in the embodiment of the present application includes:
s100: detecting CO in aluminum electrolysis cell2、CO、N2、O2And the gas volume fraction of the noble gas. It is noted that CO is present in the aluminum electrolysis cell2、CO、N2、O2And the gas volume fraction of the noble gas refers to CO2In CO2、CO、N2、O2And the volume of the noble gas, CO in CO2、CO、N2、O2And the volume ratio of the sum of the volumes of the rare gases, N2In CO2、CO、N2、O2And the volume of the rare gas, O2In CO2、CO、N2、O2And the volume of the noble gas in the CO2、CO、N2、O2And the total volume of the rare gas, may be expressed in terms of percentage, and the present application is not particularly limited.
S200: according to CO in the aluminum electrolytic cell2、CO、N2、O2And the gas volume fraction of the rare gas, calculating the aluminum electrolysis current efficiency. Can be based on CO in the aluminum electrolysis cell2According to the CO concentration and the aluminum electrolysis current efficiency2And calculating the aluminum electrolysis current efficiency.
At present, the current efficiency of aluminum electrolysis is an important economic and technical index of aluminum electrolysis production, and is an important basis for enterprises to adjust process parametersAccordingly. The methods generally used for measuring the current efficiency of aluminum electrolysis include an inventory method, a regression method, an anode gas analysis method, and the like. The inventory method is simple and is suitable for long-term inventory, the inventory period is more than 9 months, the error is 1%, and the current efficiency error can be within 1%; the method is influenced by a plurality of factors such as the cell chamber, the area of cathode aluminum liquid, the level of aluminum, furnace bottom precipitation, aluminum output deviation and the like, the inventory period is longer, and the current efficiency is closely related to the value of current intensity. The regression method can be used for measuring the current efficiency in a short period, has high accuracy, needs to select a proper tracer element, has high requirement on the addition amount of the tracer element, and cannot pollute the aluminum liquid; the current efficiency is closely related to the value of the current intensity. The anode gas analysis method is rapid and highly efficient to react the change of current efficiency, is irrelevant to the value of current intensity, but is affected by fire holes, processes and the like. The principle of the prior art gas analysis method is based on the CO in the anode gas2The relation between the concentration and the current efficiency is obtained by collecting the gas escaping in the electrolytic process and analyzing the gas concentration. The test result can quickly reflect the change of the current efficiency of the electrolytic cell within a certain time, and help is provided for comprehensively knowing the working condition of the electrolytic cell; when the state of the electrolytic cell is manually adjusted, the change state of the electrolytic cell can be accurately and quickly known, and reliable judgment data is provided for improving the process and even managing the state; the method has a guiding function on the daily process operation and provides powerful technical support for optimizing the process and the operation rule of the electrolytic cell. However, the test result is influenced by fire holes, processes and the like in the field test process, and particularly, the test result is obviously lower in a bias-heating electrolytic cell. The reason is analyzed, and the discovery shows that when the electrolytic cell is hot, the cavity under the shell surface is large, the fire hole opening is large, and when the aluminum liquid in the electrolytic cell fluctuates, the air in the electrolytic cell easily flows under the shell surface, even reacts with the carbon in the electrolytic cell, the volume fraction of the air is influenced, and the current efficiency is low. CO at high temperature2、CO、O2And C, the anode gas composition changes due to reaction, or air composition enters the aluminum electrolytic cell, and the gas composition and gas fraction in the aluminum electrolytic cell change, so that the measurement and calculation of current efficiency are influenced.
Aiming at the problems in the prior art, the method for testing the aluminum electrolysis current efficiency provided by the embodiment of the application detects CO in the aluminum electrolysis cell2、CO、N2、O2And gas volume fraction of rare gas, component N in air2、O2According to the CO in the aluminium electrolysis cell, taking into account the gas volume fraction of the rare gas2、CO、N2、O2And the gas volume fraction of the rare gas, calculating the aluminum electrolysis current efficiency. For N2、O2And rare gas detection, which can avoid the influence of CO due to the mixing of air components2Gas volume fraction of (2), testing that CO can be avoided due to C and O2Or C and CO for CO2The concentration influence of the aluminum electrolysis current is avoided, the problem that the test result is obviously low due to the influence of fire holes, processes and the like in the conventional method is solved, and the test precision of the aluminum electrolysis current efficiency can be improved.
In some embodiments, before step S200, the method further includes:
detecting N in an atmospheric environment2、O2And the gas volume fraction of the noble gas. Because of the influence of the process, the equipment or the environment, air easily enters the aluminum electrolytic cell in the test process to influence the gas composition and the gas volume fraction, and N in the atmospheric environment can be treated2、O2And a noble gas.
Step S200, comprising:
according to CO in the aluminum electrolytic cell2、CO、N2、O2And the gas volume fraction of the noble gas and N in the atmospheric environment2、O2And the gas volume fraction of the rare gas, calculating the aluminum electrolysis current efficiency. Converting N in atmospheric environment2、O2And the gas volume fraction of the rare gas is added for calculation, so that the test precision of the aluminum electrolysis current efficiency can be further improved.
Illustratively, according to CO in an aluminium electrolysis cell2、CO、N2、O2And the gas volume fraction of the noble gas and N in the atmospheric environment2、O2And gas volume of rare gasFraction, calculating the aluminum electrolysis current efficiency according to the following formula:
η＝(％CO2)/{(％CO2)+(％CO)-2[(％O2 blank)×[(％N2)+(％GRare)]/[(％N2 blank (blank))+(％GRare blank)]-(％O2)]}/2+50％+m，
Wherein eta is the aluminum electrolysis current efficiency, m is the correction coefficient,% CO2For the CO in the aluminum electrolytic cell2Is the gas volume fraction of CO in the aluminium electrolysis cell,% O2For the interior of the aluminum electrolytic cell O2Gas volume fraction of,% N2Is N in the aluminum electrolytic cell2Gas volume fraction,% GRareIs the gas volume fraction,% N, of the rare gas in the aluminum electrolysis cell2 blankIs N in atmospheric environment2Gas volume fraction,% O2 blankIs O in the atmospheric environment2Gas volume fraction,% GRare blankIs the gas volume fraction of the noble gas in the atmospheric environment. It should be noted that each parameter in the above formula may be calculated as a percentage, and the embodiment of the present application is not particularly limited. The m is used as a correction coefficient, and can be set according to the performance, process characteristics and environmental characteristics of specific aluminum electrolysis equipment, and the embodiment of the application is not particularly limited.
Compared with the prior art, the method for testing the aluminum electrolysis current efficiency only utilizes CO2In CO2And the gas volume fraction in the total CO is used for calculating the aluminum electrolysis current efficiency, and the embodiment of the application uses the CO and the N in the aluminum electrolysis cell2、O2And the gas volume fraction of the noble gas and N in the atmospheric environment2、O2And the gas volume fraction of the rare gas are both used as parameters in a calculation formula, and the calculated aluminum electrolysis current efficiency is closer to an actual value, namely the test precision of the aluminum electrolysis current efficiency is higher.
In some embodiments, CO, N in the aluminum electrolysis cell2、O2And the gas volume fraction of the rare gas and N in the atmospheric environment2、O2And the detection precision of the gas volume fraction of the rare gas can be not lower than 0.1 percent, so that the test precision of the aluminum electrolysis current efficiency is further ensured.
In some embodiments, before step S100, the method further includes:
and collecting gas at the collecting hole of the aluminum electrolytic cell to obtain sampled gas. After the electrolytic cell needing to be measured is determined, a circular hole can be chiseled on the electrolyte crust surface, and the size of the hole is equivalent to the size of the collection opening of the flue gas sampler. And arranging the collection port of the flue gas sampler above the center of the collection hole and 20-50 mm away from the electrolyte liquid surface, wherein the collection hole of the flue gas sampler is surrounded by the anode gas, the collection port of the flue gas sampler is kept stable, the anode gas is obtained, and the sampled gas is the collected anode gas.
Step S100, comprising:
detecting CO in a sample gas2、CO、N2、O2And the gas volume fraction of the noble gas.
The aluminum electrolysis current efficiency testing method provided by the embodiment of the application collects the anode gas in the aluminum electrolysis cell, the sampled gas is put into the corresponding detection equipment to detect the gas components and the volume fraction, the sampled gas collected by each collecting hole at a single time corresponds to the numerical value of the aluminum electrolysis current efficiency, repeated testing can be carried out for many times, the detection of the sampling points corresponding to different collecting holes can obtain the numerical values of the aluminum electrolysis current efficiency of a plurality of different time and different sampling points, and the analysis and the monitoring of the aluminum electrolysis process can be realized.
In some embodiments, the number of the collecting holes of each aluminum electrolysis cell is greater than or equal to 2, and the collecting holes may be opened according to specific sampling requirements, which is not specifically limited in the examples of the present application.
Collecting gas at a collecting hole of an aluminum electrolytic cell to obtain sampled gas, comprising:
and collecting gas at the collecting holes of the aluminum electrolytic cell according to a first set frequency in a first set time period to obtain corresponding sampled gas, wherein the number of gas collection times of each collecting hole is more than or equal to 3.
Illustratively, the gas volume fraction may be determined in an intermittent manner, each cell being tested for current efficiency for at least 3 consecutive days, i.e. a first set period of time of 3 days; the test is carried out twice a day, namely the first set frequency is 2 times/day, and the interval between two adjacent tests is not less than 4 hours. The number of sampling points tested each time is not less than 2, namely the number of collecting holes for collecting gas each time is more than or equal to 2, the number of times of collecting gas in each collecting hole can be set according to the number of specific sampling holes, and the number of times of collecting gas in each collecting hole is more than or equal to 3. The current efficiency of the electrolytic cell can be the average value of all the values of the current efficiency of aluminum electrolysis obtained within 3 days, and the current efficiency of aluminum electrolysis calculated by the average value is the value of the current efficiency of aluminum electrolysis obtained under the conditions of the same equipment, process conditions and the like.
The method for testing the aluminum electrolysis current efficiency provided by the embodiment of the application tests the gas volume fraction of each gas component in a mode of sampling firstly and then testing, is used for calculating the aluminum electrolysis current efficiency, realizes an intermittent detection mode, calculates the mean value of all obtained numerical values, and can obtain relatively accurate aluminum electrolysis current efficiency.
In some embodiments, step S100 may include:
detecting CO at the detection port of the aluminum electrolytic cell within a second set time period according to a second set frequency2、CO、N2、O2And an average value of gas volume fractions of the rare gas in a third set period of time, respectively, wherein the third set period of time is shorter than the second set period of time, and the number of detections at each detection port is greater than or equal to 3. It should be noted that the detection port mentioned in this embodiment of the present application may be the collection hole mentioned in the above embodiments, or the detection port is arranged larger than the collection hole and is mainly arranged according to the size of the detection device, and this embodiment of the present application is not particularly limited.
Illustratively, the gas volume fraction may be determined in a continuous manner, with a single measurement time of not less than 10min, i.e. a third set time period of 10min, and with a real-time measurement device, each cell is tested for at least 3 consecutive days of current efficiency, i.e. a second set time period of 3 days, with two tests per day, and a second set frequency of 2 times per day, with a time interval of not less than 4 hours between two tests. The number of sampling points of each test is not less than 2, and the number of gas taking of each sampling point is not less than 3. The gas sampling is not needed, the measuring equipment is directly arranged at the position of the detection port to carry out measurement, each test can last for 10min, and the test mean value within 10min is used as the output value of the test. And averaging all output values obtained by testing within 3 days to obtain a current efficiency average value.
The method for testing the aluminum electrolysis current efficiency provided by the embodiment of the application does not need gas sampling, is used for directly testing, and can obtain the aluminum electrolysis current efficiency more accurately.
Exemplary, example 1,% N2 blank＝78.1％，％O2 blank＝20.9％，％G rare blankThe gas volume fraction was measured in a continuous manner at 1.0%, and the test results are shown in table 1, where table 1 is the test data of example 1 and comparative example 1, and the comparative example is the test mode of the current efficiency of the conventional aluminum electrolysis.
Figure BDA0003540951080000081
TABLE 1
Exemplary, example 2,% N2 blank＝78.1％，％O2 blank＝20.9％，％G rare blankThe gas volume fraction was measured in a batch manner at 1.0%, and the test results are shown in table 2, where table 2 shows the test data of example 2 and comparative example 2, which is a conventional manner for testing the current efficiency of aluminum electrolysis.
Figure BDA0003540951080000091
TABLE 2
Exemplary, example 3,% N2 blank＝78.1％，％O2 blank＝20.9％，％G rare blank1.0%, the gas volume fraction is determined in a continuous manner, and the results are testedIf as shown in table 3, table 3 shows the test data of example 3 and comparative example 3, which is the current efficiency test mode of the conventional aluminum electrolysis.
Figure BDA0003540951080000101
TABLE 3
Exemplary, example 4,% N2 blank＝78.1％，％O2 blank＝20.9％，％G rare blankThe gas volume fraction was measured in a batch mode at 1.0%, and the test results are shown in table 4, where table 4 shows the test data of example 4 and comparative example 4, which is a conventional method for testing the current efficiency of aluminum electrolysis.
Figure BDA0003540951080000111
TABLE 4
Exemplary, example 5,% N2 blank＝78.1％，％O2 blank (blank)＝20.9％，％G rare blankThe gas volume fraction was measured in a continuous manner at 1.0%, and the test results are shown in table 5, where table 5 shows the test data of example 5 and comparative example 5, which is a conventional manner for testing the current efficiency of aluminum electrolysis.
Figure BDA0003540951080000121
TABLE 5
In the examples 1, 3 and 4, the electrolytic cell is tested to be hot, the cavity under the shell surface is large, the fire hole opening is large, the fluctuation of the aluminum liquid in the electrolytic cell is large, and the air in the electrolytic cell flows into the shell surface, so that the volume fraction of the air is influenced, and the current efficiency is low. The embodiment of the application provides a high-accuracy aluminum electrolysis current efficiency measuring method, and the problem that the test result is obviously low due to the fact that the test result is influenced by fire holes, the process, the reaction of air flowing into the electrolytic cell and the like in the existing method is solved.
In some embodiments, the method for testing aluminum electrolysis current efficiency provided in the examples of the present application further includes:
and calculating the average value of the current efficiency of the plurality of aluminum electrolysis to obtain the average value of the current efficiency. The multiple aluminum electrolysis current efficiencies can be obtained by means of sampling and then testing, and can also be obtained by direct testing, so that the testing precision of the aluminum electrolysis current efficiency can be further improved.
In a second aspect of the embodiments of the present application, an aluminum electrolysis current efficiency testing apparatus is provided, and fig. 2 is a schematic structural block diagram of the aluminum electrolysis current efficiency testing apparatus provided in the embodiments of the present application. As shown in fig. 2, an aluminum electrolysis current efficiency testing apparatus provided in an embodiment of the present application includes:
a detection module 300 for detecting CO in the aluminum electrolytic cell2、CO、N2、O2And the gas volume fraction of the noble gas.
An operation module 400 for calculating the CO content in the aluminum electrolysis cell2、CO、N2、O2And the gas volume fraction of the rare gas, calculating the aluminum electrolysis current efficiency.
The aluminum electrolysis current efficiency testing device provided by the embodiment of the application detects CO in the aluminum electrolysis cell2、CO、N2、O2And gas volume fraction of rare gas, component N in air2、O2According to the CO in the aluminium electrolysis cell, taking into account the gas volume fraction of the rare gas2、CO、N2、O2And the gas volume fraction of the rare gas, calculating the aluminum electrolysis current efficiency. For N2、O2And detection of rare gas, can avoid influence of CO due to mixing of air components2Gas volume fraction of (2), testing that CO can be avoided due to C and O2Or C and CO for CO2The concentration influence of the aluminum electrolysis current is avoided, the problem that the test result is obviously low due to the influence of fire holes, processes and the like in the conventional method is solved, and the test precision of the aluminum electrolysis current efficiency can be improved.
In a third aspect of the embodiments of the present application, an electronic device is provided, and fig. 3 is a schematic structural block diagram of the electronic device provided in the embodiments of the present application. As shown in fig. 3, an electronic device provided in an embodiment of the present application includes:
a memory 500, the memory 500 having stored therein a computer program;
a processor 600, said processor 600 being adapted to implement the method for testing aluminum electrolysis current efficiency according to the first aspect when executing said computer program.
In a fourth aspect of the embodiments of the present application, a computer-readable storage medium is provided, and fig. 4 is a schematic structural block diagram of a computer-readable storage medium provided in the embodiments of the present application. As shown in fig. 4, the computer-readable storage medium 700 has a computer program 710 stored thereon, and when executed by a processor, the computer program 710 implements the method for testing the efficiency of aluminum electrolysis current according to the first aspect.
It should be noted that, in the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to relevant descriptions of other embodiments for parts that are not described in detail in a certain embodiment.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-readable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The embodiment of the present application further provides a computer program product, which includes computer software instructions, and when the computer software instructions are run on a processing device, the processing device is caused to execute the flow of the aluminum electrolysis current efficiency testing method.
The computer program product includes one or more computer instructions. The procedures or functions according to the embodiments of the present application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). A computer-readable storage medium may be any available medium that a computer can store or a data storage device, such as a server, a data center, etc., that is integrated with one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus, device and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
While the preferred embodiments of the present specification have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all changes and modifications that fall within the scope of the specification.
It will be apparent to those skilled in the art that various changes and modifications can be made in the present specification without departing from the spirit and scope of the specification. Thus, if such modifications and variations of the present specification fall within the scope of the claims of the present specification and their equivalents, the specification is intended to include such modifications and variations.

Claims (10)

1. A method for testing the current efficiency of aluminum electrolysis is characterized by comprising the following steps:
detecting CO in aluminum electrolytic cell2、CO、N2、O2And a gas volume fraction of a noble gas;
according to the CO in the aluminum electrolytic cell2、CO、N2、O2And the gas volume fraction of the rare gas, calculating the aluminum electrolysis current efficiency.
2. The method for testing aluminum electrolysis current efficiency according to claim 1, wherein the method is based on CO in the aluminum electrolysis cell2、CO、N2、O2And the gas volume fraction of the rare gas, before calculating the aluminum electrolysis current efficiency, further comprising:
detecting N in an atmospheric environment2、O2And a gas volume fraction of a noble gas;
according to the CO in the aluminum electrolytic cell2、CO、N2、O2And the gas volume fraction of the rare gas, calculating the aluminum electrolysis current efficiency, comprising:
according to the CO in the aluminum electrolytic cell2、CO、N2、O2And the gas volume fraction of the rare gas and N in the atmospheric environment2、O2And gas volume fraction of rare gas, calculating the aluminum electrolysis current efficiency.
3. The method for testing aluminum electrolysis current efficiency according to claim 2, wherein the method is based on CO in the aluminum electrolysis cell2、CO、N2、O2And the gas volume fraction of the rare gas and N in the atmospheric environment2、O2And a gas volume fraction of a noble gas, calculating the aluminum electrolysis current efficiency, comprising:
according to the CO in the aluminum electrolytic cell2、CO、N2、O2And the gas volume fraction of the rare gas and N in the atmospheric environment2、O2And the gas volume fraction of a rare gas, the aluminum being calculated according to the following formulaElectrolytic current efficiency:
η＝(％CO2)/{(％CO2)+(％CO)-2[(％O2 blank)×[(％N2)+(％GRare)]/[(％N2
Blank space)+(％GRare blank)]-(％O2)]}/2+50％+m，
Wherein eta is the aluminum electrolysis current efficiency, m is the correction coefficient,% CO2For the CO in the aluminum electrolytic cell2Is the gas volume fraction of CO in the aluminium electrolysis cell,% O2For the interior of the aluminum electrolytic cell O2Gas volume fraction of,% N2Is N in the aluminum electrolytic cell2Gas volume fraction,% GRareIs the gas volume fraction,% N, of the rare gas in the aluminum electrolysis cell2 blankIs N in atmospheric environment2Gas volume fraction,% O2 blankIs O in the atmospheric environment2Gas volume fraction,% GRare blankIs the gas volume fraction of the noble gas in the atmospheric environment.
4. The method for testing aluminum electrolysis current efficiency according to claim 1, wherein the CO in the aluminum electrolysis cell is detected2、CO、N2、O2And a gas volume fraction of a noble gas, further comprising:
collecting gas at a collecting hole of the aluminum electrolytic cell to obtain sampled gas;
the detection of CO in the aluminum electrolytic cell2、CO、N2、O2And a gas volume fraction of a noble gas comprising:
detecting CO in the sample gas2、CO、N2、O2And the gas volume fraction of the noble gas.
5. The aluminum electrolysis current efficiency testing method according to claim 4, wherein the number of the collecting holes of each aluminum electrolysis cell is more than or equal to 2;
the collecting the gas at the collecting hole of the aluminum electrolytic cell to obtain the sampled gas comprises the following steps:
and collecting gas at the collecting holes of the aluminum electrolytic cell according to a first set frequency in a first set time period to obtain corresponding sampled gas, wherein the gas collecting frequency of each collecting hole is more than or equal to 3 times.
6. The method for testing aluminum electrolysis current efficiency according to claim 1, wherein the CO in the aluminum electrolysis cell is detected2、CO、N2、O2And a gas volume fraction of a noble gas comprising:
detecting CO at the detection port of the aluminum electrolytic cell within a second set time period according to a second set frequency2、CO、N2、O2And an average value of gas volume fractions of the rare gas in a third set period of time, respectively, wherein the third set period of time is shorter than the second set period of time, and the number of detections in each detection port is greater than or equal to 3.
7. The method for testing the aluminum electrolysis current efficiency according to claim 1, further comprising:
and calculating the average value of the current efficiency of the aluminum electrolysis to obtain the average value of the current efficiency.
8. An aluminum electrolysis current efficiency testing device is characterized by comprising:
a detection module for detecting CO in the aluminum electrolytic cell2、CO、N2、O2And a gas volume fraction of a noble gas;
an operation module for calculating the CO content in the aluminum cell2、CO、N2、O2And the gas volume fraction of the rare gas, calculating the aluminum electrolysis current efficiency.
9. An electronic device, comprising:
a memory having a computer program stored therein;
a processor for implementing the aluminum electrolysis current efficiency testing method according to any one of claims 1-7 when executing the computer program.
10. A computer-readable storage medium, having stored thereon a computer program which, when executed by a processor, implements the aluminum electrolysis current efficiency testing method according to any one of claims 1 to 7.
CN202210240517.2A 2022-03-10 2022-03-10 Aluminum electrolysis current efficiency testing method and related equipment Pending CN114740289A (en)

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CN202210240517.2A CN114740289A (en) 2022-03-10 2022-03-10 Aluminum electrolysis current efficiency testing method and related equipment

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CN114740289A true CN114740289A (en) 2022-07-12

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