Method and device for detecting gas collection efficiency of aluminum electrolysis cell

Abstract

The invention discloses a method and device for detecting the gas collection efficiency of an aluminum electrolysis cell, and relates to the technical field of aluminum electrolysis. The gas collection efficiency of the aluminum electrolysis cell can be determined according to the detected consumption speed of aluminum oxide in the aluminum electrolysis cell, the volume percentage of carbon monoxide at the fire hole opening, the volume percentage of carbon monoxide in the smoke tube and the smoke flow in the smoke tube, and accurate detection of the gas collection efficiency of the aluminum electrolysis cell is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum electrolysis, and in particular to a method and device for detecting the gas collection efficiency of an aluminum electrolysis cell. Background Art

[0002] The aluminum electrolysis process in the aluminum reduction cell produces raw aluminum and gases such as carbon dioxide and carbon monoxide. The CO2 and CO generated during the electrolysis process will flow out from the burner of the aluminum reduction cell and flow out from the smoke pipe of the aluminum reduction cell to the flue gas purification system under the action of negative pressure. The gas collection efficiency of the aluminum reduction cell (the ratio of the amount of anode gas flowing out of the smoke pipe to the amount of anode gas flowing out of the burner) is the main basis for adjusting the operating parameters of the flue gas purification system. The gas collection efficiency of the aluminum reduction cell needs to be tested during production. Summary of the invention

[0003] The present invention solves the technical problem of how to detect the gas collection efficiency of an aluminum electrolytic cell by providing a method and a device for detecting the gas collection efficiency of an aluminum electrolytic cell.

[0004] On the one hand, the present invention provides the following technical solutions:

[0005] A method for detecting gas collection efficiency of an aluminum electrolysis cell, comprising:

[0006] Obtaining gas collection related parameters of the aluminum electrolysis cell detected in at least one detection cycle; the gas collection related parameters include a first consumption rate of aluminum oxide in the aluminum electrolysis cell, a first volume percentage of carbon monoxide at a fire eye of the aluminum electrolysis cell, a second volume percentage of carbon monoxide in a smoke pipe of the aluminum electrolysis cell, and a first flow rate of smoke in the smoke pipe;

[0007] The gas collection efficiency of the aluminum electrolysis cell is determined according to the gas collection related parameters corresponding to at least one of the detection cycles.

[0008] In some implementations, obtaining the gas collection related parameter corresponding to the detection period includes:

[0009] Obtaining an average consumption rate of the aluminum oxide in a first set time period of the detection cycle, a third volume percentage of carbon monoxide at the fire eye obtained by each detection in a second set time period of the detection cycle, a fourth volume percentage of carbon monoxide in the smoke pipe, and a second flow rate of smoke in the smoke pipe;

[0010] The average consumption rate is taken as the first consumption rate, the average value of the multiple third volume percentages obtained through multiple detections is taken as the first volume percentage, the average value of the multiple fourth volume percentages obtained through multiple detections is taken as the second volume percentage, and the average value of the multiple second flow rates obtained through multiple detections is taken as the first flow rate.

[0011] In some embodiments, the first set time period includes the second set time period.

[0012] In some implementations, the time difference between the start time and the end time of the first set time period is greater than a preset duration.

[0013] In some implementations, obtaining the gas collection related parameter corresponding to the detection period includes:

[0014] Obtain the total consumption rate of the aluminum oxide in the plurality of aluminum electrolysis cells detected during the detection period and the fifth volume percentage of carbon monoxide at the fire eye of each aluminum electrolysis cell;

[0015] The total consumption rate is taken as the first consumption rate, and an average value of the plurality of fifth volume percentages is taken as the first volume percentage.

[0016] In some embodiments, determining the gas collection efficiency of the aluminum electrolysis cell according to the gas collection related parameter corresponding to at least one of the detection cycles includes:

[0017] Determining the gas collection efficiency according to a preset relationship between the gas collection efficiency and the gas collection related parameter;

[0018] In the preset relationship, the gas collection efficiency is negatively correlated with the first consumption rate, negatively correlated with the first volume percentage, positively correlated with the second volume percentage, and positively correlated with the first flow rate.

[0019] In some implementations, the preset relationship is:

[0020]

[0021] Among them, η is the gas collection efficiency, m is the first consumption rate, C1 is the first volume percentage, C2 is the second volume percentage, and V is the first flow rate.

[0022] On the other hand, the present invention also provides the following technical solutions:

[0023] A gas collection efficiency detection device for an aluminum electrolytic cell, comprising:

[0024] An acquisition module, used to acquire gas collection related parameters of the aluminum electrolysis cell detected in at least one detection cycle; the gas collection related parameters include a first consumption rate of aluminum oxide in the aluminum electrolysis cell, a first volume percentage of carbon monoxide at a fire eye of the aluminum electrolysis cell, a second volume percentage of carbon monoxide in a smoke pipe of the aluminum electrolysis cell, and a first flow rate of smoke in the smoke pipe;

[0025] A determination module is used to determine the gas collection efficiency of the aluminum electrolysis cell according to the gas collection related parameters corresponding to at least one of the detection cycles.

[0026] On the other hand, the present invention also provides the following technical solutions:

[0027] A computer device comprises a memory, a processor and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps of any one of the above-mentioned methods for detecting the gas collection efficiency of an aluminum electrolysis cell.

[0028] On the other hand, the present invention also provides the following technical solutions:

[0029] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of any one of the above-mentioned methods for detecting the gas collection efficiency of an aluminum electrolysis cell.

[0030] One or more technical solutions provided by the present invention have at least the following technical effects or advantages:

[0031] The present invention can determine the gas collection efficiency of the aluminum electrolytic cell according to the detected aluminum oxide consumption rate in the aluminum electrolytic cell, the volume percentage of carbon monoxide at the fire eye, the volume percentage of carbon monoxide in the smoke pipe and the smoke flow rate in the smoke pipe, thereby realizing accurate detection of the gas collection efficiency of the aluminum electrolytic cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0033] Figure 1 Flow chart of a method for detecting gas collection efficiency of an aluminum electrolytic cell according to an embodiment of the present invention;

[0034] Figure 2 Schematic diagram of a gas collection efficiency detection device for an aluminum electrolysis cell in an embodiment of the present invention. DETAILED DESCRIPTION

[0035] The embodiments of the present invention solve the technical problem of how to detect the gas collection efficiency of an aluminum electrolysis cell by providing a method and a device for detecting the gas collection efficiency of an aluminum electrolysis cell.

[0036] In order to better understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] In the embodiment of the present invention, the chemical reaction equation for the electrolysis of Al2O3 to generate aluminum in a single aluminum electrolytic cell may be:

[0038]

[0039] According to the chemical reaction equation, 1 mole of Al2O3 is electrolyzed to generate n moles of CO and mole of CO2, that is, electrolysis generates 22.4n liters of CO and liters of CO2. 1kg of Al2O3 can react to produce moles of CO and moles of CO2, i.e. standard conditions Cubic meters of CO and Cubic meters of CO2. Assuming that the consumption rate of Al2O3 in the aluminum electrolytic cell is m kg / hour, then m kg of Al2O3 is consumed in 1 hour to generate Cubic meters of CO and Cubic meters of CO2, that is, the volume of carbon monoxide discharged from the fire eye in 1 hour is cubic meter.

[0040] Assuming that the volume percentage of CO in the smoke pipe of the aluminum electrolytic cell is C2 and the flue gas flow rate in the smoke pipe is V cubic meters / hour, the volume of CO flowing out of the smoke pipe in one hour is C2×V cubic meters.

[0041] From this, the gas collection efficiency of the aluminum electrolytic cell can be obtained In the formula, C2, V, and m can all be detected, so after determining n, the gas collection efficiency η can be determined.

[0042] Considering that the volume percentage of carbon monoxide flowing out of the flare mouth (set as C1) can be detected, and the gas flowing out of the flare mouth is CO and CO2, m kg of Al2O3 can be generated in 1 hour Cubic meters of CO and cubic meters of CO2, and Can get Gas collection efficiency The gas collection efficiency η can be determined based on this formula.

[0043] Based on the above analysis, Figure 1 As shown, the method for detecting the gas collection efficiency of an aluminum electrolysis cell according to an embodiment of the present invention may include:

[0044] Step S1, obtaining gas collection related parameters of the aluminum electrolysis cell detected in at least one detection cycle; the gas collection related parameters include a first consumption rate of aluminum oxide in the aluminum electrolysis cell, a first volume percentage of carbon monoxide at the fire eye of the aluminum electrolysis cell, a second volume percentage of carbon monoxide in the smoke pipe of the aluminum electrolysis cell, and a first flow rate of smoke in the smoke pipe;

[0045] In some embodiments, the detection cycle may be one day, that is, the gas collection efficiency is detected once a day; the detection cycle may also be one week, that is, the gas collection efficiency is detected once a week;

[0046] Among them, the first consumption rate is m, the first volume percentage is C1, the second volume percentage is C2, and the first flow rate is V; the consumption rate of alumina can be calculated based on the statistical data of alumina feeding, and the consumption rate can be obtained by dividing the statistical feeding amount by the statistical time; the volume percentage of carbon monoxide at the fire eye and in the smoke pipe can be detected by a gas composition analyzer; the smoke flow in the smoke pipe can be detected by a flow meter;

[0047] The first consumption rate may be the aluminum oxide consumption in any one-hour period of the test, and the first volume percentage, the second volume percentage and the first flow rate may all be data obtained from a single test within the test period;

[0048] The first consumption rate can be accurate to an integer, the first volume percentage and the second volume percentage can be accurate to three significant figures, and the first flow rate can be accurate to three significant figures or more;

[0049] Step S2, determining the gas collection efficiency of the aluminum electrolytic cell according to the gas collection related parameters corresponding to at least one detection cycle;

[0050] In some embodiments, the gas collection efficiency of the aluminum electrolytic cell may be determined according to the gas collection related parameters detected in a single detection cycle, or the gas collection efficiency of each detection cycle may be first determined according to the gas collection related parameters detected in each detection cycle, and then the average value of multiple gas collection efficiencies in multiple detection cycles is used as the gas collection efficiency of the aluminum electrolytic cell;

[0051] Wherein, the gas collection efficiency is η; in some embodiments, step S2 may include: determining the gas collection efficiency according to a preset relationship between the gas collection efficiency and gas collection related parameters; in the preset relationship, the gas collection efficiency is negatively correlated with the first consumption rate, negatively correlated with the first volume percentage, positively correlated with the second volume percentage, and positively correlated with the first flow rate;

[0052] Furthermore, in some embodiments, the preset relationship can be Of course, a correction value may be added to the preset relationship or a correction coefficient may be multiplied.

[0053] It can be seen from the above that the gas collection efficiency detection method of the aluminum electrolysis cell in the embodiment of the present invention can determine the gas collection efficiency of the aluminum electrolysis cell based on the detected aluminum oxide consumption rate in the aluminum electrolysis cell, the volume percentage of carbon monoxide at the fire eye, the volume percentage of carbon monoxide in the smoke pipe and the smoke flow rate in the smoke pipe, thereby realizing accurate detection of the gas collection efficiency of the aluminum electrolysis cell.

[0054] As mentioned above, the first consumption rate can be the aluminum oxide consumption in any hour period of the test, and the first volume percentage, the second volume percentage and the first flow rate can all be data obtained from a single test within the test period. However, the data obtained from a single test is accidental and may be inaccurate, resulting in inaccurate and unreliable gas collection efficiency. To improve the accuracy of the gas collection efficiency, in some embodiments, in step S1, obtaining the gas collection related parameters corresponding to the test period may include:

[0055] Obtaining an average consumption rate of aluminum oxide in a first set time period of a detection cycle, a third volume percentage of carbon monoxide at the fire eye obtained in each detection in a second set time period of the detection cycle, a fourth volume percentage of carbon monoxide in the smoke pipe, and a second flow rate of smoke in the smoke pipe;

[0056] The average consumption rate is taken as the first consumption rate, the average value of multiple third volume percentages obtained from multiple detections is taken as the first volume percentage, the average value of multiple fourth volume percentages obtained from multiple detections is taken as the second volume percentage, and the average value of multiple second flow rates obtained from multiple detections is taken as the first flow rate.

[0057] For example, the detection cycle can be one week, that is, the gas collection efficiency is detected once a week, and the first set time period can be from 0:00 on Monday to 24:00 on Tuesday every week. The length of the first set time period is 48 hours. The amount of aluminum oxide discharged from 0:00 on Monday to 24:00 on Tuesday can be obtained based on the statistical data of discharge, and the average consumption rate of aluminum oxide in 48 hours can be obtained by dividing the discharge amount by 48 hours. The average consumption rate of aluminum oxide in the first set time period of the detection cycle is used as the first consumption rate, so that the obtained first consumption rate can be more accurate and reliable, thereby improving the accuracy and reliability of the gas collection efficiency.

[0058] For example, if the detection cycle is one week, the second set time period can be from 0:00 on Monday to 12:00 on Monday every week, and the duration of the second set time period is 12 hours, that is, the volume percentage of carbon monoxide at the fire eye, the volume percentage of carbon monoxide in the smoke pipe, and the smoke flow in the smoke pipe are detected multiple times within 12 hours. The average value of multiple third volume percentages obtained from multiple detections is used as the first volume percentage, the average value of multiple fourth volume percentages obtained from multiple detections is used as the second volume percentage, and the average value of multiple second flow rates obtained from multiple detections is used as the first flow rate, so that the obtained first volume percentage, second volume percentage, and first flow rate can be made more accurate and reliable, thereby improving the accuracy and reliability of the gas collection efficiency.

[0059] In some embodiments, in each detection cycle, the first set time period and the second set time period may be in different time periods, but this will cause the data of the aluminum oxide feed rate, the third volume percentage, the fourth volume percentage, and the second flow rate in the first set time period to be in non-same time periods, which may cause the gas collection efficiency to be inaccurate and unreliable. To improve the accuracy and reliability of the gas collection efficiency, in some embodiments, the first set time period may include the second set time period. For example, the detection cycle is one day, that is, the gas collection efficiency is detected once a day, the first set time period may be 0:00-24:00 of the same day, and the second set time period may be 0:00-12:00 of the same day, which can ensure that the aluminum oxide feed rate, the third volume percentage, the fourth volume percentage, and the second flow rate in the first set time period include at least part of the data in the same time period, which is conducive to improving the accuracy of the first consumption rate, the first volume percentage, the second volume percentage, and the first flow rate, thereby facilitating the improvement of the accuracy and reliability of the gas collection efficiency.

[0060] In some embodiments, the duration of the first set time period may be shorter, that is, the time difference between the start time and the end time of the first set time period is shorter, for example, the detection cycle is one day, and the first set time period is 0:00-12:00 of the day. The duration of the first set time period is shorter, and the statistically obtained alumina discharge amount is smaller, which will result in low reliability of the calculated first consumption rate. To improve the reliability of the first consumption rate, in some embodiments, the time difference between the start time and the end time of the first set time period may be greater than the preset duration. The preset duration may be 24 hours.

[0061] When the aluminum electrolytic cell in step S1 is a single aluminum electrolytic cell, step S2 can obtain the gas collection efficiency of the single aluminum electrolytic cell. In addition to detecting the gas collection efficiency of a single aluminum electrolytic cell, the embodiment of the present invention can also detect the gas collection efficiency of an electrolytic cell series and an electrolytic cell work area. In order to detect the gas collection efficiency of an electrolytic cell series and an electrolytic cell work area, in some embodiments, in step S1, obtaining gas collection related parameters corresponding to the detection cycle may include:

[0062] Obtain the total consumption rate of aluminum oxide in multiple aluminum electrolysis cells detected during the detection period and the fifth volume percentage of carbon monoxide at the fire eye of each aluminum electrolysis cell; take the total consumption rate as the first consumption rate, and take the average of multiple fifth volume percentages as the first volume percentage.

[0063] The gas collection efficiency of a single detection cycle can be obtained in the above text, but the reliability of the gas collection efficiency of a single detection is low. If the gas collection efficiency of a single detection is used as the gas collection efficiency of the aluminum electrolytic cell, the reliability of the gas collection efficiency of the aluminum electrolytic cell obtained will be low. In order to improve the reliability of the gas collection efficiency of the aluminum electrolytic cell, in some embodiments, step S2 may include: determining the gas collection efficiency of each detection cycle according to the gas collection-related parameters corresponding to each detection cycle, and taking the average of the multiple gas collection efficiencies detected in multiple detection cycles as the gas collection efficiency of the aluminum electrolytic cell. In this way, multiple gas collection efficiencies can be detected and obtained in multiple detection cycles respectively, and the average of the multiple gas collection efficiencies can be used as the gas collection efficiency of the aluminum electrolytic cell, which has higher reliability.

[0064] Exemplarily, the embodiment of the present invention sets the detection cycle to 1 day (the gas collection efficiency is detected once a day), the first set time period is from 0:00 to 24:00 of the same day, the second set time period is 1 hour, and the gas collection efficiency of a 200kA aluminum electrolytic cell is detected 5 times in succession. The obtained data are shown in Table 1.

[0065] Table 1

[0066]

[0067] Exemplarily, the embodiment of the present invention sets the detection cycle to 2 days (the gas collection efficiency is detected once every 2 days), the first set time period is from 0:00 to 24:00 on a certain day, the second set time period is 3 hours, and the gas collection efficiency of a 400kA aluminum electrolytic cell is detected 4 times in succession. The obtained data are shown in Table 2.

[0068] Table 2

[0069]

[0070] Exemplarily, the embodiment of the present invention sets the detection cycle to 3 days (the gas collection efficiency is detected once every 3 days), the first set time period is from 0:00 to 24:00 on a certain day, and the second set time period is 12 hours. The gas collection efficiency of a 600kA aluminum electrolytic cell is detected three times in succession, and the obtained data are shown in Table 3.

[0071] Table 3

[0072]

[0073] Exemplarily, the embodiment of the present invention sets the detection cycle to one week (gas collection efficiency is tested once a week), the first set time period is from 0:00 on Monday to 24:00 on Sunday, and the second set time period is 98 hours. The gas collection efficiency of a certain 500kA electrolytic cell series is tested four times in succession, and the obtained data are shown in Table 4.

[0074] Table 4

[0075]

[0076] Exemplarily, the embodiment of the present invention sets the detection cycle to one week (gas collection efficiency is tested once a week), the first set time period is from 0:00 on Monday to 24:00 on Sunday, and the second set time period is 36 hours. The gas collection efficiency of a 300kA electrolytic cell work area is tested four times in succession, and the obtained data are shown in Table 5.

[0077] Table 5

[0078]

[0079] like Figure 2 As shown, the embodiment of the present invention also provides a gas collection efficiency detection device for an aluminum electrolysis cell, comprising:

[0080] An acquisition module is used to acquire gas collection related parameters of the aluminum electrolytic cell detected in at least one detection cycle; the gas collection related parameters include a first consumption rate of aluminum oxide in the aluminum electrolytic cell, a first volume percentage of carbon monoxide at a fire eye of the aluminum electrolytic cell, a second volume percentage of carbon monoxide in a smoke pipe of the aluminum electrolytic cell, and a first flow rate of smoke in the smoke pipe;

[0081] A determination module is used to determine the gas collection efficiency of the aluminum electrolysis cell according to the gas collection related parameters corresponding to at least one detection cycle.

[0082] In some implementations, the acquisition module may be specifically used to:

[0083] Obtaining an average consumption rate of aluminum oxide in a first set time period of a detection cycle, a third volume percentage of carbon monoxide at the fire eye obtained in each detection in a second set time period of the detection cycle, a fourth volume percentage of carbon monoxide in the smoke pipe, and a second flow rate of smoke in the smoke pipe;

[0084] The average consumption rate is taken as the first consumption rate, the average value of multiple third volume percentages obtained from multiple detections is taken as the first volume percentage, the average value of multiple fourth volume percentages obtained from multiple detections is taken as the second volume percentage, and the average value of multiple second flow rates obtained from multiple detections is taken as the first flow rate.

[0085] In some embodiments, the first set time period may include the second set time period.

[0086] In some implementations, the time difference between the start time and the end time of the first set time period may be greater than a preset duration.

[0087] In some implementations, the acquisition module may be specifically used to:

[0088] Obtaining the total consumption rate of aluminum oxide in multiple aluminum electrolysis cells detected during the detection period and the fifth volume percentage of carbon monoxide at the fire eye of each aluminum electrolysis cell;

[0089] The total consumption rate is taken as the first consumption rate, and the average value of the plurality of fifth volume percentages is taken as the first volume percentage.

[0090] In some implementations, the determination module may be specifically configured to:

[0091] determining the gas collection efficiency according to a preset relationship between the gas collection efficiency and gas collection related parameters;

[0092] In the preset relationship, the gas collection efficiency is negatively correlated with the first consumption rate, negatively correlated with the first volume percentage, positively correlated with the second volume percentage, and positively correlated with the first flow rate.

[0093] In some implementations, the preset relationship may be:

[0094] Wherein, η is the gas collection efficiency, m is the first consumption rate, C1 is the first volume percentage, C2 is the second volume percentage, and V is the first flow rate.

[0095] Based on the same inventive concept as the aforementioned method for detecting gas collection efficiency of an aluminum electrolysis cell, an embodiment of the present invention also provides a computer device, comprising a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps of any of the aforementioned methods for detecting gas collection efficiency of an aluminum electrolysis cell.

[0096] Since the computer device introduced in the embodiment of the present invention is a computer device used to implement the aluminum electrolysis cell gas collection efficiency detection method in the embodiment of the present invention, based on the aluminum electrolysis cell gas collection efficiency detection method introduced in the embodiment of the present invention, the technical personnel in the field can understand the specific implementation of the computer device in the embodiment of the present invention and its various variations, so how the computer device implements the method in the embodiment of the present invention will not be described in detail here. As long as the technical personnel in the field implement the computer device used in the aluminum electrolysis cell gas collection efficiency detection method in the embodiment of the present invention, it belongs to the scope of protection of the present invention.

[0097] Based on the same inventive concept as the aforementioned aluminum electrolysis cell gas collection efficiency detection method, the present invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the aforementioned aluminum electrolysis cell gas collection efficiency detection methods.

[0098] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0099] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing device to work in a specific way, so that the instructions stored in the computer-readable memory produce a product including an instruction device, which implements the functions specified in the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0100] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0101] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0102] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for detecting gas collection efficiency of an aluminum electrolysis cell, characterized in that: include: Obtaining gas collection related parameters of the aluminum electrolysis cell detected in at least one detection cycle; The gas collection related parameters include a first consumption rate of aluminum oxide in the aluminum electrolysis cell, a first volume percentage of carbon monoxide at a fire eye of the aluminum electrolysis cell, a second volume percentage of carbon monoxide in a smoke pipe of the aluminum electrolysis cell, and a first flow rate of smoke in the smoke pipe; The gas collection efficiency of the aluminum electrolysis cell is determined according to the gas collection related parameters corresponding to at least one of the detection cycles.

2. The method for detecting gas collection efficiency of an aluminum electrolysis cell according to claim 1, characterized in that: Acquiring the gas collection related parameters corresponding to the detection period includes: Obtaining an average consumption rate of the aluminum oxide in a first set time period of the detection cycle, a third volume percentage of carbon monoxide at the fire eye obtained by each detection in a second set time period of the detection cycle, a fourth volume percentage of carbon monoxide in the smoke pipe, and a second flow rate of smoke in the smoke pipe; The average consumption rate is taken as the first consumption rate, the average value of the multiple third volume percentages obtained through multiple detections is taken as the first volume percentage, the average value of the multiple fourth volume percentages obtained through multiple detections is taken as the second volume percentage, and the average value of the multiple second flow rates obtained through multiple detections is taken as the first flow rate.

3. The method for detecting gas collection efficiency of an aluminum electrolysis cell according to claim 2, characterized in that: The first set time period includes the second set time period.

4. The method for detecting gas collection efficiency of an aluminum electrolysis cell according to claim 2, characterized in that: The time difference between the start time and the end time of the first set time period is greater than a preset duration.

5. The method for detecting gas collection efficiency of an aluminum electrolysis cell according to claim 1, characterized in that: Acquiring the gas collection related parameters corresponding to the detection period includes: Obtain the total consumption rate of the aluminum oxide in the plurality of aluminum electrolysis cells detected during the detection period and the fifth volume percentage of carbon monoxide at the fire eye of each aluminum electrolysis cell; The total consumption rate is taken as the first consumption rate, and an average value of the plurality of fifth volume percentages is taken as the first volume percentage.

6. The method for detecting gas collection efficiency of an aluminum electrolysis cell according to claim 1, characterized in that: Determining the gas collection efficiency of the aluminum electrolysis cell according to the gas collection related parameter corresponding to at least one of the detection cycles includes: Determining the gas collection efficiency according to a preset relationship between the gas collection efficiency and the gas collection related parameter; In the preset relationship, the gas collection efficiency is negatively correlated with the first consumption rate, negatively correlated with the first volume percentage, positively correlated with the second volume percentage, and positively correlated with the first flow rate.

7. The method for detecting gas collection efficiency of an aluminum electrolysis cell according to claim 6, characterized in that: The preset relationship is: Wherein, η is the gas collection efficiency, m is the first consumption rate, C1 is the first volume percentage, C2 is the second volume percentage, and V is the first flow rate.

8. A gas collection efficiency detection device for an aluminum electrolytic cell, characterized in that: include: An acquisition module, used to acquire gas collection related parameters of the aluminum electrolysis cell detected in at least one detection cycle; The gas collection related parameters include a first consumption rate of aluminum oxide in the aluminum electrolysis cell, a first volume percentage of carbon monoxide at a fire eye of the aluminum electrolysis cell, a second volume percentage of carbon monoxide in a smoke pipe of the aluminum electrolysis cell, and a first flow rate of smoke in the smoke pipe; A determination module is used to determine the gas collection efficiency of the aluminum electrolysis cell according to the gas collection related parameters corresponding to at least one of the detection cycles.

9. A computer device, characterized in that: The invention comprises a memory, a processor and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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