WO2022085610A1 - Condition monitoring system for metal recovery device - Google Patents

Condition monitoring system for metal recovery device Download PDF

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Publication number
WO2022085610A1
WO2022085610A1 PCT/JP2021/038354 JP2021038354W WO2022085610A1 WO 2022085610 A1 WO2022085610 A1 WO 2022085610A1 JP 2021038354 W JP2021038354 W JP 2021038354W WO 2022085610 A1 WO2022085610 A1 WO 2022085610A1
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Prior art keywords
voltage
metal recovery
recovery device
data
threshold value
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PCT/JP2021/038354
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French (fr)
Japanese (ja)
Inventor
誠 永田
晃一 阪上
卓哉 岩佐
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アサヒプリテック株式会社
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Priority to JP2022557506A priority Critical patent/JPWO2022085610A1/ja
Priority to KR1020237016895A priority patent/KR20230091135A/en
Publication of WO2022085610A1 publication Critical patent/WO2022085610A1/en

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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
    • C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
    • C25C7/02—Electrodes; Connections thereof
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16528—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values using digital techniques or performing arithmetic operations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/2503—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques for measuring voltage only, e.g. digital volt meters (DVM's)
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring

Definitions

  • the present invention is an invention relating to a system for monitoring the state of a metal recovery device.
  • waste liquids such as treatment liquids discharged from factories and solutions for dissolving wastes contain valuable metals such as Au, Ag, Pt, Ni, Cu, and Co.
  • the metal to be recovered is recovered by, for example, electrolyzing the waste liquid.
  • As a metal recovery device using electrolysis for example, various metal recovery devices as shown in Patent Documents 1 to 4 have been conventionally used.
  • the metal recovery device requires maintenance because the operating efficiency deteriorates due to deterioration of the electrodes when the operating time becomes long, and the wiring and equipment deteriorate.
  • it is difficult to predict the maintenance time of the metal recovery device because the time when the maintenance of the metal recovery device is required differs depending on the type of electrolytic solution and the treatment conditions. Therefore, the state of the metal recovery device is checked regularly, but the metal recovery efficiency is lowered and a large work load is caused because the metal recovery device is stopped.
  • Japanese Unexamined Patent Publication No. 2017-155433 International Publication No. 2008/153001 Japanese Unexamined Patent Publication No. 2007-002310 Japanese Unexamined Patent Publication No. 61-104096
  • the present invention is an invention made in view of the above problems, and is to provide a system for monitoring the state of a metal recovery device.
  • the condition monitoring system of the present invention that has solved the above problems has the following configurations.
  • the condition monitoring system is Equipped with a metal recovery device and a control device,
  • the metal recovery device is It has a voltage measuring unit that measures the voltage between the cathode and the anode.
  • the control device is It has a data calculation unit that processes the voltage data received from the voltage measurement unit.
  • the data calculation unit calculates the first-order differential value or the second-order differential value as a feature amount based on the voltage data, and at the same time,
  • the feature amount is compared with a predetermined threshold value, and when the feature amount is equal to or higher than the threshold value, the metal recovery device is diagnosed as requiring maintenance.
  • control device notifies the management terminal of the diagnosis result obtained in comparison with the threshold value through a telecommunication line.
  • the target in the maintenance required state is an anode coated with an electrode catalyst.
  • the present invention it is possible to provide a system for monitoring the state of the metal recovery device.
  • the system of the present invention by monitoring the voltage of the metal recovery device, it is possible to grasp the state of the metal recovery device and maintain the metal recovery device at an appropriate time.
  • FIG. 1 is a schematic configuration diagram of the overall configuration of the monitoring system of the metal recovery device of the present invention.
  • FIG. 2 is a schematic configuration diagram of a metal recovery device.
  • FIG. 3 is a block diagram showing a configuration of a monitoring system according to an embodiment of the present invention.
  • FIG. 4 is an example of the configuration of the database.
  • FIG. 5 is a flowchart showing an example of data processing.
  • FIG. 6 is a graph in which first-order differentiated values are plotted based on voltage data.
  • FIG. 7 is a graph in which the values differentiated to the second order based on the voltage data are plotted.
  • FIG. 1 is a schematic configuration diagram showing an example of the overall configuration of the condition monitoring system (hereinafter referred to as a condition monitoring system) of the metal recovery device of the present invention.
  • the condition monitoring system of the present invention monitors the voltage condition used in the metal recovery device 1.
  • the condition monitoring system includes a metal recovery device 1 and a control device 20.
  • the metal recovery device 1 has an anode and a voltage measuring unit 10 for measuring a voltage between the anode and the cathode.
  • the control device 20 has a data calculation unit that processes voltage data received from the voltage measurement unit 10.
  • the control device 20 includes a data calculation unit, which is a central processing unit represented by a CPU, a storage unit for various data, and a data input / output unit.
  • a processor such as a CPU, a memory such as a ROM, an HDD, and the like. It is a storage medium, a general-purpose computer equipped with a communication function for transmitting and receiving data, and an electronic computer such as a personal computer or a server.
  • the control device 20 is connected to the output unit of the voltage measuring unit 10 provided in the metal recovery device 1 by wire or wirelessly, and is configured to be able to acquire voltage data when the metal recovery device is in operation.
  • the condition monitoring system may optionally include a management terminal 40. The management terminal 40 may be notified of the result of processing the voltage data by the data processing unit of the control device 20 through a telecommunication line, if necessary.
  • FIG. 2 is a schematic configuration diagram showing an example of the metal recovery device 1.
  • the outline of the metal recovery device 1 will be described with reference to FIG. 2, but the present invention is not limited to the illustrated example, and the system of the present invention is applied to various known metal recovery devices that recover metal from waste liquid by using electrolysis. It is possible.
  • the condition monitoring system of the present invention can be used without changing the configuration of the existing metal recovery device.
  • the metal recovery device 1 has an electrolytic cell 2 for accommodating a waste liquid 6 containing metal ions (hereinafter referred to as a metal ion-containing solution), an anode 3 necessary for electrolysis, and a cathode 4.
  • the size, shape, and material of the electrolytic cell 2 can be appropriately selected according to the purpose.
  • the anode 3 is an insoluble material.
  • Various known electrode base materials can be used for the anode 3, and metals having corrosion resistance such as titanium, niobium, zirconium, and various alloys using these as a base material are preferable.
  • the electrode catalyst for coating the anode base material include platinum group oxides such as ruthenium, rhodium, palladium, platinum, and iridium. Since the present invention can be applied to the anode of an existing metal recovery device, it can be applied without changing the size, shape, number, and material of the anode.
  • the material of the cathode 4 can be appropriately selected according to the type of the metal ion-containing solution 6 and the metal to be recovered, and is, for example, iron, nickel, stainless steel, aluminum, titanium, an alloy using these as a base material, or the like.
  • the cylindrical cathode 4 is used in the illustrated example, since the present invention can be applied to an existing metal recovery device, it can be applied without changing the material, size, shape, structure, etc. of the cathode.
  • the cathode 4 is provided with a driving unit 5, and the driving unit 5 is configured to rotate the cathode 4.
  • the cathode 4 rotates around the shaft 14 in the circumferential direction by the operation of the drive unit 5.
  • a power source such as a motor is exemplified as the drive unit 5, but the drive unit 5 is not limited to this.
  • the anode 3 and the cathode 4 are connected to a power supply unit 7 having a rectifier and an AC power source, and are configured to generate a potential between the anode 3 and the cathode 4 in the electrolytic cell 2.
  • the power supply unit 7 rectifies an AC power supply and supplies a predetermined DC current to the electrodes 3 and 4.
  • the metal ion-containing solution 6 is electrolyzed in the electrolytic cell 2, and valuable metal is deposited on the cathode 4.
  • the voltage measuring unit 10 is installed in the metal recovery device 1 in order to measure the voltage of the current supplied to the electrodes.
  • the voltage measuring unit 10 includes a voltage measuring sensor 8 such as a voltmeter, a voltage measuring terminal 9, and a measured value output unit 11.
  • the voltage measuring terminal 9 is connected to an arbitrary position between the power supply unit 7 and the anode 3 and between the power supply unit 7 and the cathode 4 so that the voltage of the electrode can be measured.
  • the metal ion-containing solution 6 is not particularly limited as long as it is a liquid containing a valuable metal.
  • the metal ion-containing solution 6 is, for example, a plating waste liquid such as a plating stripping solution, a plating solution, or a cleaning solution for a plated product, or a solution in which a material containing a valuable metal such as a printed substrate is dissolved in an acidic solution.
  • valuable metals include, but are not limited to, gold, silver, copper, nickel, platinum group elements, and the like, and any metal to be recovered.
  • the metal ion-containing solution 6 is supplied to the electrolytic cell 2 in a batch type or continuously from a supply port provided in the electrolytic cell 2 from a discharge source such as a factory via, for example, a supply tank 12 provided as needed. If necessary, a liquid feeding means such as a pump 13 may be used to supply the metal ion-containing solution 6.
  • the operating conditions of the metal recovery device such as the electrolysis conditions are appropriately set according to the processing amount of the metal recovery device 1 and the supply amount of the metal ion-containing solution 6.
  • the present invention can adopt the operating conditions of the existing metal recovery device 1.
  • the treated liquid after being treated in the electrolytic cell 2 is sent to an arbitrary treatment step.
  • the treated liquid discharged from the electrolytic cell 2 is returned to the supply tank 12 and is supplied to the electrolytic cell 2 again.
  • the treatment step of the treated liquid is not particularly limited, and a known step can be adopted.
  • the treated liquid may be sent to any processing step other than electrolysis.
  • condition monitoring system of the present invention is not limited to the voltage fluctuation based on the anode.
  • the condition monitoring system of the present invention can also include accelerated voltage fluctuations caused by various failures. For example, when the wiring connecting the electrode and the power supply knit is deteriorated, the voltage may fluctuate at an accelerating rate when an abnormality occurs in the metal recovery device. Even in such a case, if the feature amount exceeds the threshold value, the management terminal 40 is notified. The notification indicates that the metal recovery device is in a maintenance-required state. If the state of the anode confirmed based on the notification is normal, it can be determined that there is a problem in other parts such as wiring. Therefore, based on the notification, it can be seen that the metal recovery device is in a maintenance-required state.
  • a threshold value (hereinafter referred to as a threshold value) for measuring the voltage of the current supplied to the electrode and determining the feature amount calculated from the measured value and the deterioration state of the anode is used. It was found that the appropriate maintenance time of the anode can be determined by comparing the above.
  • the voltage curve changes from 0 to a sharp abrupt point as shown in FIGS. 6 and 7.
  • a predetermined threshold value a value obtained by first-order differentiation or second-order differentiation (hereinafter, collectively referred to as a differential value) is used as a feature amount.
  • the threshold value to determine whether maintenance of the anode is necessary.
  • the method of first-order differentiation includes, for example, dividing the amount of change in voltage by time, but is not limited to this.
  • the method of second-order differentiation also includes, for example, dividing the amount of change in the first-order differentiation value by time, but is not limited to this.
  • the threshold value can be determined by referring to the value when maintenance of the anode is required from the electrolysis conditions such as the liquid type to be electrolyzed, the voltage, and the current, the past data, and the data of similar devices.
  • An arbitrary voltage may be set as a threshold value, and when the feature amount reaches the threshold value, it may be determined that maintenance is required.
  • the voltage may fluctuate significantly after the start of operation, and false detection is performed.
  • the average value of the differential values is calculated after a predetermined time has elapsed after the start of electrolysis, and twice the average value is set as the threshold value.
  • the differential value collected at a predetermined interval is compared with the threshold value, and when the differential value exceeds the threshold value once or twice or more in a row, maintenance is required. It may be judged as a state.
  • the differential value calculated after a predetermined time has elapsed after the start of electrolysis is compared with the moving average value of each differential value, and when the moving average value becomes equal to or higher than the threshold value, maintenance is required. You may judge that.
  • the reason why the differential value is calculated after a predetermined time has elapsed is that the voltage tends to increase or decrease immediately after the start of electrolysis, and it is desirable to collect data after the voltage stabilizes, for example, 30 hours after the start of electrolysis. Is.
  • the differential value with the threshold value is desirable to compare the differential value with the threshold value at regular intervals.
  • the electrolyzer when the electrolyzer is continuously operated for 24 hours, it is at regular intervals such as every 12 hours or every 24 hours, or at arbitrary intervals (for example, every 24 hours).
  • they may be compared at predetermined intervals). Even when the operation of the electrolyzer is less than 24 hours, the comparison may be performed at predetermined intervals during operation.
  • the moving average value the average value for each fixed section may be obtained, and may be appropriately set, for example, every 100 hours.
  • the threshold value is set as follows.
  • the feature amount is calculated from the acquired voltage data, the mean value and the standard deviation (1 ⁇ ) of the feature amount are obtained, and the mean value + n ⁇ (n is an arbitrarily set value) is set as a threshold value.
  • This threshold value is compared with the feature amount, and when the feature amount exceeds the threshold value, it is determined that maintenance is required.
  • Table 1 is the data corresponding to FIG. 7.
  • the average value + 3 ⁇ is set as the threshold value, and it can be judged that maintenance is required when the integrated time when the feature amount exceeds the threshold value is 129 hours.
  • FIG. 3 is a block diagram showing a configuration of a condition monitoring system according to an embodiment of the present invention.
  • the control device 20 includes a data acquisition unit 22, a storage unit 23, a data calculation unit 24, and an output unit 25. It is also preferable that the control device 20 further includes an A / D converter 21 that converts the voltage data acquired by the voltage measuring unit 10 into digital data.
  • FIG. 5 is a flowchart showing a processing example of the data calculation unit 24 of the control system 20.
  • the voltage measuring unit 10 measures the voltage of the current supplied to the electrodes with the voltage measuring sensor 8 while the metal recovery device 1 is in operation.
  • the measurement interval of the voltage measurement sensor 8 can be arbitrarily set, and may be set to measure the voltage at a constant interval or continuously, for example.
  • the obtained voltage data (voltage measured value) is transmitted to the control device 20 via the measured value output unit 11.
  • the voltage data is preferably transmitted to the A / D converter 21.
  • the measured value output unit 11 and the control device 20 are connected by a telecommunication line such as a wired LAN, a wireless LAN, WiFi, a telephone communication line, or an arbitrary communication means such as a data transfer cable, and are configured to be capable of transmitting voltage data. Has been done.
  • the A / D converter 21 converts the analog signal received from the voltage measuring unit 10 into a digital signal.
  • the data acquisition unit 22 receives voltage data from the voltage measurement unit 10 or the A / D converter 21.
  • the received voltage data is stored in the storage unit 23 and transmitted to the data calculation unit 24.
  • the received voltage data may be transmitted directly from the data acquisition unit 22 to the data calculation unit 24, or may be stored in the storage unit 23 from the data acquisition unit 22 and then read out from the storage unit 23 to be read out from the storage unit 23. May be sent to. It is preferable to save the voltage data in association with the acquisition time information.
  • the data calculation unit 24 calculates the feature amount (value obtained by first-order differentiation and / or second-order differentiation) from the acquired voltage data.
  • the obtained differential value is stored in the storage unit 23 as a feature amount.
  • the data calculation unit 24 determines the state of the anode by comparing the feature amount with the threshold value.
  • the determination result is stored in the storage unit 23.
  • the determination result may be stored in the storage unit 23 by adding additional information such as symbols, numerical values, and characters.
  • additional information information for distinguishing between the threshold value and above and below the threshold value, and a difference value between the feature amount and the threshold value are exemplified.
  • the data calculation unit 24 determines the necessity of an event such as a notification according to the determination result, and transmits the determination result from the output unit 25 to the management terminal 40 as necessary. For example, when a necessary condition such as a determination result equal to or higher than a threshold value is satisfied, the output unit 25 notifies the management terminal 40 via a telecommunication line as a trigger for event execution.
  • the content of the notification can be information set as appropriate, such as a predetermined judgment result, various acquired data, and a fixed phrase.
  • the notification information may be generated by adding a fixed phrase prepared in advance in the storage unit 23, the above determination result, voltage data, and the like.
  • the output unit 25 communicates with the management terminal 40 via the communication line. For example, when the output unit 25 receives the determination result from the data calculation unit 24, the output unit 25 transmits the information to the management terminal 40.
  • the information and the date and time transmitted to the management terminal 40 may be stored in the storage unit 23.
  • each process unit of the control device 20 such as the data acquisition unit 22, the storage unit 23, the data calculation unit 24, and the output unit 25 are realized by executing a program corresponding to each process by a processor such as a CPU. .. Further, each program is stored in a memory such as a ROM in advance, and the processor reads the program from the memory and executes it to execute necessary processing in each processing unit and operates.
  • a recording medium such as a RAM for temporarily storing data may be provided as needed. By temporarily storing the data in the RAM, the time for the processor to acquire the data from the storage medium such as the HDD can be shortened.
  • the storage unit 23 may be a built-in storage medium such as an HDD or SSD, or a portable storage medium such as an SD card or a USB memory.
  • DBMS database management system
  • each data received by the storage unit 23 is input to an appropriate record of the database and stored.
  • DBMS database management system
  • a unique primary key For example, in the database of FIG. 4, a unique primary key, measurement date record (Day), measurement time record (Time), integration time record, current data record, voltage data record, second-order differential record, average value record, standard. Create a record to store the data generated by the above process such as deviation record, threshold value record, judgment result record, and input each data derived from the same voltage data to each record by associating it with the same primary key. It is desirable to save it.
  • the database may be provided with a record holding arbitrary information such as the status indicated by the above data, or an event or action triggered by the above data.
  • the output unit 25 is a functional unit that communicates between the control device 20 and the external management terminal 40, and can be connected to, for example, a communication module that can be connected to a telecommunication line such as an LTE line or the Internet, or a wired LAN. It is composed of communication modules.
  • the management terminal 40 to be notified may be 1 or 2 or more.
  • the management terminal 40 is a terminal capable of communicating with the control device 20, and examples thereof include mobile information terminals such as smartphones, tablets, PDAs, and mobile phones, and terminals equipped with various communication modules such as mobile computers and desktop computers.
  • the administrator can grasp the state of the anode 3 by the notification received by the management terminal 40, and can perform appropriate maintenance and management such as replacement of the anode. Further, the administrator can access the control device 20 through a telecommunication line, or can confirm the data stored in the storage unit 23 via a terminal such as a personal computer arbitrarily connected to the control device 20. At this time, the state of the anode can be easily confirmed by using a program that extracts and processes arbitrary records or data from the database. For example, voltage information may be used to form a graph so that changes in voltage over time can be monitored.

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Abstract

Provided is a system for monitoring the condition of a metal recovery device.　The condition monitoring system comprises a metal recovery device and a control device. The metal recovery device comprises a voltage measurement unit for measuring the voltage between a negative electrode and a positive electrode. The control device comprises a data calculation unit for processing measured voltage data received from the voltage measurement unit. The data calculation unit calculates, as a feature amount, a derivative value on the basis of the voltage data, compares the feature amount against a prescribed threshold value, and when the feature amount is the threshold value or greater, diagnoses the positive electrode as being in a maintenance-required state.

Description

金属回収装置の状態監視システムCondition monitoring system for metal recovery equipment
　本発明は金属回収装置の状態を監視するシステムに関する発明である。 The present invention is an invention relating to a system for monitoring the state of a metal recovery device.
　工場などから排出される処理液や廃棄物を溶解処理した溶液などの各種廃液にはＡｕ、Ａｇ、Ｐｔ、Ｎｉ、Ｃｕ、Ｃｏなどの有価金属が含まれている。回収対象となる金属は、例えば廃液を電気分解して回収されている。電気分解を利用した金属の回収装置としては例えば特許文献１～４に示す様な各種金属回収装置が従来から使用されている。 Various waste liquids such as treatment liquids discharged from factories and solutions for dissolving wastes contain valuable metals such as Au, Ag, Pt, Ni, Cu, and Co. The metal to be recovered is recovered by, for example, electrolyzing the waste liquid. As a metal recovery device using electrolysis, for example, various metal recovery devices as shown in Patent Documents 1 to 4 have been conventionally used.
　金属回収装置は稼働時間が長くなると電極が劣化するなどして稼働効率が低下したり、配線や設備が劣化するためメンテナンスが必要となる。しかしながら金属回収装置のメンテナンスが必要となる時期は電解液の種類や処理条件などによって異なるため、金属回収装置のメンテナンス時期を予測することが難しかった。そのため金属回収装置の状態を定期的に確認しているが、金属回収装置の停止を伴うため金属回収効率が低下したり、多大な作業負担が生じていた。 The metal recovery device requires maintenance because the operating efficiency deteriorates due to deterioration of the electrodes when the operating time becomes long, and the wiring and equipment deteriorate. However, it is difficult to predict the maintenance time of the metal recovery device because the time when the maintenance of the metal recovery device is required differs depending on the type of electrolytic solution and the treatment conditions. Therefore, the state of the metal recovery device is checked regularly, but the metal recovery efficiency is lowered and a large work load is caused because the metal recovery device is stopped.
特開２０１７―１５５３４３号公報Japanese Unexamined Patent Publication No. 2017-155433 国際公開第２００８／１５３００１号公報International Publication No. 2008/153001 特開２００７－００２３１０号公報Japanese Unexamined Patent Publication No. 2007-002310 特開昭６１－１０４０９６号公報Japanese Unexamined Patent Publication No. 61-104096
　本発明は上記課題に鑑みなされた発明であって、金属回収装置の状態を監視するシステムを提供することである。 The present invention is an invention made in view of the above problems, and is to provide a system for monitoring the state of a metal recovery device.
　上記課題を解決し得た本発明の状態監視システムは、以下の構成を有する。
　［１］金属回収装置の状態を監視するシステムであって、
　前記状態監視システムは、
　金属回収装置と、制御装置とを備え、
　前記金属回収装置は、
　陰極と陽極との間の電圧を測定する電圧測定部を有し、
　前記制御装置は、
　前記電圧測定部から受信した電圧データを処理するデータ演算部を有し、
　前記データ演算部では、前記電圧データに基づいて１階微分値、または２階微分値を特徴量として算出すると共に、
　前記特徴量と所定のしきい値と比較し、前記特徴量が前記しきい値以上であるときに、前記金属回収装置を要保守状態と診断する。 The condition monitoring system of the present invention that has solved the above problems has the following configurations.
[1] A system that monitors the status of metal recovery equipment.
The condition monitoring system is
Equipped with a metal recovery device and a control device,
The metal recovery device is
It has a voltage measuring unit that measures the voltage between the cathode and the anode.
The control device is
It has a data calculation unit that processes the voltage data received from the voltage measurement unit.
The data calculation unit calculates the first-order differential value or the second-order differential value as a feature amount based on the voltage data, and at the same time,
The feature amount is compared with a predetermined threshold value, and when the feature amount is equal to or higher than the threshold value, the metal recovery device is diagnosed as requiring maintenance.
　［２］前記制御装置は、しきい値と比較して得られた診断結果を、電気通信回線を通じて管理用端末に通知することも好ましい実施態様である。 [2] It is also a preferable embodiment that the control device notifies the management terminal of the diagnosis result obtained in comparison with the threshold value through a telecommunication line.
　［３］前記要保守状態の対象は電極触媒がコーティングされた陽極であることも好ましい実施態様である。 [3] It is also a preferable embodiment that the target in the maintenance required state is an anode coated with an electrode catalyst.
　本発明によれば金属回収装置の状態を監視するシステムを提供できる。特に本発明のシステムでは金属回収装置の電圧を監視することで金属回収装置の状態を把握し、適切な時期に金属回収装置をメンテナンスすることが可能となる。 According to the present invention, it is possible to provide a system for monitoring the state of the metal recovery device. In particular, in the system of the present invention, by monitoring the voltage of the metal recovery device, it is possible to grasp the state of the metal recovery device and maintain the metal recovery device at an appropriate time.
図１は、本発明の金属回収装置の監視システムの全体構成の概略構成図である。FIG. 1 is a schematic configuration diagram of the overall configuration of the monitoring system of the metal recovery device of the present invention. 図２は、金属回収装置の概略構成図である。FIG. 2 is a schematic configuration diagram of a metal recovery device. 図３は、本発明の一実施形態に係る監視システムの構成を示すブロック図である。FIG. 3 is a block diagram showing a configuration of a monitoring system according to an embodiment of the present invention. 図４は、データベースの構成の例示である。FIG. 4 is an example of the configuration of the database. 図５は、データ処理の一例を示すフローチャートである。FIG. 5 is a flowchart showing an example of data processing. 図６は、電圧データに基づいて１階微分した値をプロットしたグラフである。FIG. 6 is a graph in which first-order differentiated values are plotted based on voltage data. 図７は、電圧データに基づいて２階微分した値をプロットしたグラフである。FIG. 7 is a graph in which the values differentiated to the second order based on the voltage data are plotted.
　［監視システムの全体構成］
　図１は、本発明の金属回収装置の状態監視システム（以下、状態監視システムという）の全体構成の一例を示す概略構成図である。
　本発明の状態監視システムは金属回収装置１で使用されている電圧状態を監視する。状態監視システムは、金属回収装置１、制御装置２０とを備える。
　金属回収装置１は陽極と、該陽極と陰極との間の電圧を測定する電圧測定部１０を有する。
　制御装置２０は電圧測定部１０から受信した電圧データを処理するデータ演算部を有する。
　制御装置２０としては、ＣＰＵなどに代表される中央演算処理装置であるデータ演算部、各種データの記憶部、データ入出力部を備えており、例えばＣＰＵなどのプロセッサ、ＲＯＭなどのメモリ、ＨＤＤなどの記憶媒体、データの送受信を行なう通信機能を備える汎用コンピューター、パーソナルコンピューターやサーバーなどの電子計算機である。
　制御装置２０は金属回収装置１に設けた電圧測定部１０の出力部と有線、または無線で接続され、金属回収装置の稼働時に電圧データを取得できるように構成されている。
　更に状態監視システムは任意に管理用端末４０を備えていてもよい。制御装置２０のデータ処理部で電圧データを処理した結果を必要に応じて電気通信回線を通じて管理用端末４０に通知してもよい。 [Overall configuration of monitoring system]
FIG. 1 is a schematic configuration diagram showing an example of the overall configuration of the condition monitoring system (hereinafter referred to as a condition monitoring system) of the metal recovery device of the present invention.
The condition monitoring system of the present invention monitors the voltage condition used in the metal recovery device 1. The condition monitoring system includes a metal recovery device 1 and a control device 20.
The metal recovery device 1 has an anode and a voltage measuring unit 10 for measuring a voltage between the anode and the cathode.
The control device 20 has a data calculation unit that processes voltage data received from the voltage measurement unit 10.
The control device 20 includes a data calculation unit, which is a central processing unit represented by a CPU, a storage unit for various data, and a data input / output unit. For example, a processor such as a CPU, a memory such as a ROM, an HDD, and the like. It is a storage medium, a general-purpose computer equipped with a communication function for transmitting and receiving data, and an electronic computer such as a personal computer or a server.
The control device 20 is connected to the output unit of the voltage measuring unit 10 provided in the metal recovery device 1 by wire or wirelessly, and is configured to be able to acquire voltage data when the metal recovery device is in operation.
Further, the condition monitoring system may optionally include a management terminal 40. The management terminal 40 may be notified of the result of processing the voltage data by the data processing unit of the control device 20 through a telecommunication line, if necessary.
　［金属回収装置の構成］
　図２は金属回収装置１の一例を示す概略構成図である。図２に基づいて金属回収装置１の概要を説明するが、本発明は図示例に限られず、電気分解を利用して廃液から金属を回収する各種公知の金属回収装置に本発明のシステムを適用可能である。
　本発明の状態監視システムは、既存の金属回収装置の構成を変更することなく利用可能である。
　金属回収装置１は金属イオンを含む廃液６（以下、金属イオン含有溶液という）を収容する電解槽２、電気分解に必要な陽極３、陰極４を有する。
　電解槽２は、目的に応じて、大きさ、形状、材料を適宜選択できる。
　陽極３は不溶性材料である。陽極３には各種公知の電極基材を使用でき、例えばチタン、ニオブ、ジルコニウム、及びこれらを母材とする各種合金などの耐食性を有する金属が好ましい。また本発明の対象とする金属回収装置は電極基材を電極触媒で被覆した陽極を使用することも好ましい。陽極基材を被覆する電極触媒としては、ルテニウム、ロジウム、パラジウム、白金、イリジウムなどの白金族の酸化物などが例示される。
　本発明は、既存の金属回収装置の陽極に適用できるため、陽極の大きさ、形状、数、材料を変更することなく、適用可能である。 [Structure of metal recovery device]
FIG. 2 is a schematic configuration diagram showing an example of the metal recovery device 1. The outline of the metal recovery device 1 will be described with reference to FIG. 2, but the present invention is not limited to the illustrated example, and the system of the present invention is applied to various known metal recovery devices that recover metal from waste liquid by using electrolysis. It is possible.
The condition monitoring system of the present invention can be used without changing the configuration of the existing metal recovery device.
The metal recovery device 1 has an electrolytic cell 2 for accommodating a waste liquid 6 containing metal ions (hereinafter referred to as a metal ion-containing solution), an anode 3 necessary for electrolysis, and a cathode 4.
The size, shape, and material of the electrolytic cell 2 can be appropriately selected according to the purpose.
The anode 3 is an insoluble material. Various known electrode base materials can be used for the anode 3, and metals having corrosion resistance such as titanium, niobium, zirconium, and various alloys using these as a base material are preferable. Further, it is also preferable to use an anode in which the electrode base material is coated with the electrode catalyst in the metal recovery device which is the subject of the present invention. Examples of the electrode catalyst for coating the anode base material include platinum group oxides such as ruthenium, rhodium, palladium, platinum, and iridium.
Since the present invention can be applied to the anode of an existing metal recovery device, it can be applied without changing the size, shape, number, and material of the anode.
　陰極４は、金属イオン含有溶液６の種類、回収対象金属に応じて材質を適宜選択でき、例えば鉄、ニッケル、ステンレス、アルミ、チタン、これらを母材とする合金などである。
　図示例では筒状の陰極４を使用しているが、本発明は既存の金属回収装置に適用できるため、陰極の材料、大きさ、形状、構造等を変更することなく、適用可能である。
　陰極４には駆動部５が設けられており、該駆動部５により陰極４が回転するように構成されている。陰極４は駆動部５の作動により軸１４を中心にして周方向に回転する。駆動部５としてはモーターなどの動力源が例示されるが、これに限定されない。 The material of the cathode 4 can be appropriately selected according to the type of the metal ion-containing solution 6 and the metal to be recovered, and is, for example, iron, nickel, stainless steel, aluminum, titanium, an alloy using these as a base material, or the like.
Although the cylindrical cathode 4 is used in the illustrated example, since the present invention can be applied to an existing metal recovery device, it can be applied without changing the material, size, shape, structure, etc. of the cathode.
The cathode 4 is provided with a driving unit 5, and the driving unit 5 is configured to rotate the cathode 4. The cathode 4 rotates around the shaft 14 in the circumferential direction by the operation of the drive unit 5. A power source such as a motor is exemplified as the drive unit 5, but the drive unit 5 is not limited to this.
　陽極３と陰極４は整流器と交流電源を有する電源ユニット７に接続され、電解槽２内で陽極３と陰極４との間に電位が発生するように構成されている。
　電源ユニット７は交流電源を整流し、所定の直流電流を電極３、４に供給する。電力が供給されると電解槽２内で金属イオン含有溶液６の電気分解が行われ、陰極４に有価金属が析出する。
　本発明では電極に供給される電流の電圧を測定するために、電圧測定部１０を金属回収装置１に設置する。電圧測定部１０は電圧計などの電圧測定センサ８、電圧測定端子９、及び測定値出力部１１とを有する。電圧測定端子９は電極の電圧を測定できるように電源ユニット７と陽極３との間、電源ユニット７と陰極４との間の任意の位置に接続されている。 The anode 3 and the cathode 4 are connected to a power supply unit 7 having a rectifier and an AC power source, and are configured to generate a potential between the anode 3 and the cathode 4 in the electrolytic cell 2.
The power supply unit 7 rectifies an AC power supply and supplies a predetermined DC current to the electrodes 3 and 4. When electric power is supplied, the metal ion-containing solution 6 is electrolyzed in the electrolytic cell 2, and valuable metal is deposited on the cathode 4.
In the present invention, the voltage measuring unit 10 is installed in the metal recovery device 1 in order to measure the voltage of the current supplied to the electrodes. The voltage measuring unit 10 includes a voltage measuring sensor 8 such as a voltmeter, a voltage measuring terminal 9, and a measured value output unit 11. The voltage measuring terminal 9 is connected to an arbitrary position between the power supply unit 7 and the anode 3 and between the power supply unit 7 and the cathode 4 so that the voltage of the electrode can be measured.
　金属イオン含有溶液６は、有価金属を含有する液であれば特に限定されない。金属イオン含有溶液６としては例えば、めっき剥離液、めっき液、めっき品の洗浄液などのめっき廃液、あるいはプリント基板などの有価金属を含む材料を酸性溶液で溶解した溶解液などである。
　有価金属としては金、銀、銅、ニッケル、白金族元素などが例示されるが、これに限定されず、回収対象となる任意の金属である。 The metal ion-containing solution 6 is not particularly limited as long as it is a liquid containing a valuable metal. The metal ion-containing solution 6 is, for example, a plating waste liquid such as a plating stripping solution, a plating solution, or a cleaning solution for a plated product, or a solution in which a material containing a valuable metal such as a printed substrate is dissolved in an acidic solution.
Examples of valuable metals include, but are not limited to, gold, silver, copper, nickel, platinum group elements, and the like, and any metal to be recovered.
　金属イオン含有溶液６は例えば必要に応じて設けた供給槽１２などを介して工場などの排出源から電解槽２に設けた供給口から電解槽２にバッチ式、あるいは連続式に供給される。金属イオン含有溶液６の供給には必要に応じてポンプ１３などの送液手段を用いてもよい。電気分解条件などの金属回収装置の操業条件は金属回収装置１の処理量や金属イオン含有溶液６の供給量に応じて適宜設定される。本発明は既存の金属回収装置１の操業条件を採用できる。
　電解槽２で処理された後の処理済液は任意の処理工程に送液される。図示例では電解槽２から排出された処理済液を供給槽１２に返送して電解槽２に再度供給されるように構成されている。本発明では処理済液の処理工程は特に限定されず、公知の工程を採用できる。例えば処理済液は電気分解以外の他の任意の処理工程に送液してもよい。 The metal ion-containing solution 6 is supplied to the electrolytic cell 2 in a batch type or continuously from a supply port provided in the electrolytic cell 2 from a discharge source such as a factory via, for example, a supply tank 12 provided as needed. If necessary, a liquid feeding means such as a pump 13 may be used to supply the metal ion-containing solution 6. The operating conditions of the metal recovery device such as the electrolysis conditions are appropriately set according to the processing amount of the metal recovery device 1 and the supply amount of the metal ion-containing solution 6. The present invention can adopt the operating conditions of the existing metal recovery device 1.
The treated liquid after being treated in the electrolytic cell 2 is sent to an arbitrary treatment step. In the illustrated example, the treated liquid discharged from the electrolytic cell 2 is returned to the supply tank 12 and is supplied to the electrolytic cell 2 again. In the present invention, the treatment step of the treated liquid is not particularly limited, and a known step can be adopted. For example, the treated liquid may be sent to any processing step other than electrolysis.
　本明細書では陽極にコーティングした電極触媒の減耗によって電圧が変動した場合を例に説明するが、本発明の状態監視システムは陽極に基づく電圧変動に限定されない。本発明の状態監視システムは、各種故障に基づいて生じる加速度的な電圧変動も対象に含めることができる。例えば電極と電源ニットとを接続する配線が劣化した場合など、金属回収装置に異常が生じると電圧が加速度的に変動することがある。このような場合も特徴量がしきい値以上になれば管理用端末４０に通知がされる。該通知により金属回収装置が要保守状態であることがわかる。該通知に基づいて確認した陽極の状態が正常であれば、例えば配線など他の部分に問題があると判断できる。したがって通知に基づいて金属回収装置が要保守状態にあることがわかる。 In this specification, the case where the voltage fluctuates due to the wear of the electrode catalyst coated on the anode will be described as an example, but the condition monitoring system of the present invention is not limited to the voltage fluctuation based on the anode. The condition monitoring system of the present invention can also include accelerated voltage fluctuations caused by various failures. For example, when the wiring connecting the electrode and the power supply knit is deteriorated, the voltage may fluctuate at an accelerating rate when an abnormality occurs in the metal recovery device. Even in such a case, if the feature amount exceeds the threshold value, the management terminal 40 is notified. The notification indicates that the metal recovery device is in a maintenance-required state. If the state of the anode confirmed based on the notification is normal, it can be determined that there is a problem in other parts such as wiring. Therefore, based on the notification, it can be seen that the metal recovery device is in a maintenance-required state.
［電圧変化と陽極の劣化との関係］
　金属回収装置は、例えば電極基材に貴金属などの電極触媒をコーティングした陽極を用いた場合、電解処理期間が長くなると陽極の性能が劣化し、電解効率が低下するため陽極のメンテナンスが必要になる。
　本発明者らの検討の結果、電極に供給される電流の電圧を測定し、その測定値から算出される特徴量と陽極の劣化状態を判断するしきい値（以下、しきい値という）とを比較することで陽極の適切なメンテナンス時期を判断できることを見出した。
　本発明者らが検討を重ねたところ、電解処理に伴って陽極にコーティングした電極触媒の減耗が進んでコーティングした電極触媒の面積が減少すると残存する電極触媒部分に電流が集中して電極触媒の減耗が加速すると共に、この際の電圧が急激に上昇することがわかった。
　電解処理時の電圧を測定し、その値をグラフにプロットすると、陽極の電極触媒の減耗が進んで陽極が劣化しだすと電圧が上昇するため、電圧曲線が変化する変曲点が現れる。もっとも単位時間あたりの電圧の変化量を観察しても電圧は被処理溶液の種類や金属イオン濃度などの処理条件によっても変化するため、電圧の変化を検知対象とすると検知誤差が多く、メンテナンスの要否を判断できない。 [Relationship between voltage change and deterioration of anode]
For example, when an anode in which an electrode catalyst such as a noble metal is coated on an electrode base material is used as a metal recovery device, the performance of the anode deteriorates as the electrolysis treatment period becomes longer, and the electrolysis efficiency decreases, so that maintenance of the anode is required. ..
As a result of the study by the present inventors, a threshold value (hereinafter referred to as a threshold value) for measuring the voltage of the current supplied to the electrode and determining the feature amount calculated from the measured value and the deterioration state of the anode is used. It was found that the appropriate maintenance time of the anode can be determined by comparing the above.
As a result of repeated studies by the present inventors, as the wear of the electrode catalyst coated on the anode progresses with the electrolytic treatment and the area of the coated electrode catalyst decreases, the current concentrates on the remaining electrode catalyst portion of the electrode catalyst. It was found that the voltage at this time rises sharply as the wear accelerates.
When the voltage during electrolysis is measured and the value is plotted on a graph, an inflection point appears in which the voltage curve changes because the voltage rises as the anode electrode catalyst wears out and the anode begins to deteriorate. However, even when observing the amount of change in voltage per unit time, the voltage changes depending on the type of solution to be treated and the processing conditions such as metal ion concentration. I can't judge the necessity.
　そこで検知誤差低減について更に検討した結果、電圧の測定結果を１階微分、または２階微分してプロットすると図６や図７に示す様に電圧曲線が０から正に急峻に変化する変曲点が現れ（図中矢印部分）、この１階微分値、または２階微分値が所定のしきい値以上の場合に陽極のメンテナンスが必要と判断できることを見出した。
　したがって本発明では測定した電圧データ（生データ）をそのまま使用するのではなく、１階微分、または２階微分した値（以下、まとめて微分値ということがある）を特徴量とし、この特徴量としきい値とを比較して、陽極のメンテナンスの要否を判断する。
　なお、１階微分の方法は、例えば電圧の変化量を時間で割ることが挙げられるが、これに限定されない。２階微分の方法も、例えば1階微分値の変化量を時間で割ることが挙げられるが、これに限定されない。 Therefore, as a result of further investigation on the reduction of the detection error, when the voltage measurement result is plotted with the first derivative or the second derivative, the voltage curve changes from 0 to a sharp abrupt point as shown in FIGS. 6 and 7. Appears (indicated by the arrow in the figure), and it has been found that maintenance of the anode can be determined when the first-order differential value or the second-order differential value is equal to or higher than a predetermined threshold value.
Therefore, in the present invention, the measured voltage data (raw data) is not used as it is, but a value obtained by first-order differentiation or second-order differentiation (hereinafter, collectively referred to as a differential value) is used as a feature amount. And the threshold value to determine whether maintenance of the anode is necessary.
The method of first-order differentiation includes, for example, dividing the amount of change in voltage by time, but is not limited to this. The method of second-order differentiation also includes, for example, dividing the amount of change in the first-order differentiation value by time, but is not limited to this.
　しきい値は、電解する液種、電圧、電流などの電解条件、過去のデータ、類似の装置のデータなどから陽極のメンテナンスが必要となったときの値を参考にして決定することができる。
　しきい値として任意の電圧を設定し、特徴量が該しきい値に達成した場合を要メンテナンス状態と判断してもよいが、稼働開始後は電圧が大きく変動することがあり、誤検出することがある。稼働開始初期に生じる誤検出率を低減する観点からは、例えば（１）電解開始後、所定時間経過してから微分値の平均値を算出し、該平均値の２倍をしきい値として設定し、所定の間隔で採取した微分値と、該しきい値とを比較し、該微分値が１回、または２回以上の任意の回数を連続でしきい値以上となったとき、要メンテナンス状態と判断してもよい。
　あるいは（２）電解開始後、所定時間経過してから算出した微分値と、各微分値の移動平均値とを比較し、該移動平均値が該しきい値以上となったとき、要メンテナンス状態と判断してもよい。
　微分値の算出を所定時間の経過後とするのは、電解開始直後は電圧が増減しやすいため、例えば電解開始後３０時間経過後など、電圧が安定した後、データを採取することが望ましいからである。
　また微分値としきい値との対比は、一定の間隔で行なうことが望ましく、例えば電解装置を２４時間連続稼働する場合は、１２時間毎、或いは２４時間毎など一定の間隔、あるいは任意の間隔（以下、あわせて所定の間隔という）で対比してもよい。電解装置の稼働が２４時間未満の場合も稼働中の所定の間隔で対比すればよい。
　移動平均値も任意の一定区間毎の平均値を求めればよく、例えば１００時間毎など適宜設定すればよい。 The threshold value can be determined by referring to the value when maintenance of the anode is required from the electrolysis conditions such as the liquid type to be electrolyzed, the voltage, and the current, the past data, and the data of similar devices.
An arbitrary voltage may be set as a threshold value, and when the feature amount reaches the threshold value, it may be determined that maintenance is required. However, the voltage may fluctuate significantly after the start of operation, and false detection is performed. Sometimes. From the viewpoint of reducing the false positive rate that occurs at the initial stage of operation, for example, (1) the average value of the differential values is calculated after a predetermined time has elapsed after the start of electrolysis, and twice the average value is set as the threshold value. Then, the differential value collected at a predetermined interval is compared with the threshold value, and when the differential value exceeds the threshold value once or twice or more in a row, maintenance is required. It may be judged as a state.
Alternatively, (2) the differential value calculated after a predetermined time has elapsed after the start of electrolysis is compared with the moving average value of each differential value, and when the moving average value becomes equal to or higher than the threshold value, maintenance is required. You may judge that.
The reason why the differential value is calculated after a predetermined time has elapsed is that the voltage tends to increase or decrease immediately after the start of electrolysis, and it is desirable to collect data after the voltage stabilizes, for example, 30 hours after the start of electrolysis. Is.
In addition, it is desirable to compare the differential value with the threshold value at regular intervals. For example, when the electrolyzer is continuously operated for 24 hours, it is at regular intervals such as every 12 hours or every 24 hours, or at arbitrary intervals (for example, every 24 hours). Hereinafter, they may be compared at predetermined intervals). Even when the operation of the electrolyzer is less than 24 hours, the comparison may be performed at predetermined intervals during operation.
As the moving average value, the average value for each fixed section may be obtained, and may be appropriately set, for example, every 100 hours.
　また（３）しきい値は下記のように設定することも好ましい実施態様である。
　取得した電圧データから特徴量を算出すると共に、該特徴量の平均値と標準偏差（１σ）を求め、平均値＋ｎσ（ｎは任意に設定した値）をしきい値として設定する。このしきい値と特徴量を比較し、特徴量がしきい値以上となった場合を要メンテナンス状態と判断する。
　例えば表１では以下の様にしきい値を設定して陽極の状態を監視できる。なお、表１は図７に対応するデータである。 Further, it is also a preferable embodiment that (3) the threshold value is set as follows.
The feature amount is calculated from the acquired voltage data, the mean value and the standard deviation (1σ) of the feature amount are obtained, and the mean value + nσ (n is an arbitrarily set value) is set as a threshold value. This threshold value is compared with the feature amount, and when the feature amount exceeds the threshold value, it is determined that maintenance is required.
For example, in Table 1, the state of the anode can be monitored by setting the threshold value as shown below. Table 1 is the data corresponding to FIG. 7.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　表１では平均値＋３σをしきい値として設定しており、特徴量がしきい値を超えた積算時間１２９時間において要メンテナンス状態と判断できる。 In Table 1, the average value + 3σ is set as the threshold value, and it can be judged that maintenance is required when the integrated time when the feature amount exceeds the threshold value is 129 hours.
［状態監視システムの構成］
　図３は本発明の一実施形態に係る状態監視システムの構成を示すブロック図である。
　制御装置２０は、データ取得部２２、記憶部２３、データ演算部２４、出力部２５とを有する。制御装置２０は更に電圧測定部１０で取得した電圧データをデジタルデータに変換するＡ／Ｄコンバーター２１を有することも好ましい。 [Status monitoring system configuration]
FIG. 3 is a block diagram showing a configuration of a condition monitoring system according to an embodiment of the present invention.
The control device 20 includes a data acquisition unit 22, a storage unit 23, a data calculation unit 24, and an output unit 25. It is also preferable that the control device 20 further includes an A / D converter 21 that converts the voltage data acquired by the voltage measuring unit 10 into digital data.
　図５は制御システム２０のデータ演算部２４の処理例を示したフローチャートである。 FIG. 5 is a flowchart showing a processing example of the data calculation unit 24 of the control system 20.
　電圧測定部１０は金属回収装置１の稼働中、電極に供給する電流の電圧を電圧測定センサ８で測定する。電圧測定センサ８での測定間隔は任意に設定でき、例えば一定の間隔、或いは連続的に電圧を測定するように設定してもよい。得られた電圧データ（電圧測定値）は測定値出力部１１を介して制御装置２０に送信する。電圧データは好ましくはＡ／Ｄコンバーター２１に送信する。測定値出力部１１と制御装置２０は有線ＬＡＮ、無線ＬＡＮ、ＷｉＦｉ、電話通信回線などの電気通信回線、あるいはデータ転送ケーブルなどの任意の通信手段で接続され、電圧データの送信ができるように構成されている。 The voltage measuring unit 10 measures the voltage of the current supplied to the electrodes with the voltage measuring sensor 8 while the metal recovery device 1 is in operation. The measurement interval of the voltage measurement sensor 8 can be arbitrarily set, and may be set to measure the voltage at a constant interval or continuously, for example. The obtained voltage data (voltage measured value) is transmitted to the control device 20 via the measured value output unit 11. The voltage data is preferably transmitted to the A / D converter 21. The measured value output unit 11 and the control device 20 are connected by a telecommunication line such as a wired LAN, a wireless LAN, WiFi, a telephone communication line, or an arbitrary communication means such as a data transfer cable, and are configured to be capable of transmitting voltage data. Has been done.
　Ａ／Ｄコンバーター２１は、電圧測定部１０から受信したアナログ信号をデジタル信号に変換する。 The A / D converter 21 converts the analog signal received from the voltage measuring unit 10 into a digital signal.
　データ取得部２２は電圧測定部１０、またはＡ／Ｄコンバーター２１から電圧データを受信する。受信した電圧データは記憶部２３に記憶させると共にデータ演算部２４に送信する。受信した電圧データはデータ取得部２２から直接データ演算部２４に送信してもよいし、あるいはデータ取得部２２から記憶部２３に記憶させた後、該記憶部２３から読みだしてデータ演算部２４に送信してもよい。電圧データは取得時刻情報と紐付けて保存することが好ましい。 The data acquisition unit 22 receives voltage data from the voltage measurement unit 10 or the A / D converter 21. The received voltage data is stored in the storage unit 23 and transmitted to the data calculation unit 24. The received voltage data may be transmitted directly from the data acquisition unit 22 to the data calculation unit 24, or may be stored in the storage unit 23 from the data acquisition unit 22 and then read out from the storage unit 23 to be read out from the storage unit 23. May be sent to. It is preferable to save the voltage data in association with the acquisition time information.
　データ演算部２４では取得した電圧データから特徴量（１階微分、および／または２階微分した値）を計算する。得られた微分値を特徴量として記憶部２３に記憶させる。 The data calculation unit 24 calculates the feature amount (value obtained by first-order differentiation and / or second-order differentiation) from the acquired voltage data. The obtained differential value is stored in the storage unit 23 as a feature amount.
　またデータ演算部２４では特徴量としきい値とを比較することで、陽極の状態を判断する。判断結果は記憶部２３に記憶させる。判断結果は、記号、数値、文字などの情報の付加情報を付加して記憶部２３に記憶させてもよい。付加情報として該しきい値以上と該しきい値未満とを区別する情報や、特徴量と該しきい値との差分値が例示される。 In addition, the data calculation unit 24 determines the state of the anode by comparing the feature amount with the threshold value. The determination result is stored in the storage unit 23. The determination result may be stored in the storage unit 23 by adding additional information such as symbols, numerical values, and characters. As additional information, information for distinguishing between the threshold value and above and below the threshold value, and a difference value between the feature amount and the threshold value are exemplified.
　データ演算部２４は判断結果に応じて通知などのイベントの要否を判断し、必要応じて出力部２５から管理用端末４０に判断結果を送信する。例えば判断結果がしきい値以上など、必要条件を満たした場合をイベント実行のトリガーとして、出力部２５から電気通信回線を介して管理用端末４０へ通知する。通知内容は所定の判断結果や各種取得データ、定型文など適宜設定した情報とすることができる。例えば記憶部２３に予め用意されている定型文と、上記判断結果や電圧データなどを加えて通知情報を生成してもよい。 The data calculation unit 24 determines the necessity of an event such as a notification according to the determination result, and transmits the determination result from the output unit 25 to the management terminal 40 as necessary. For example, when a necessary condition such as a determination result equal to or higher than a threshold value is satisfied, the output unit 25 notifies the management terminal 40 via a telecommunication line as a trigger for event execution. The content of the notification can be information set as appropriate, such as a predetermined judgment result, various acquired data, and a fixed phrase. For example, the notification information may be generated by adding a fixed phrase prepared in advance in the storage unit 23, the above determination result, voltage data, and the like.
　出力部２５は、通信回線を介して、管理用端末４０と通信する。例えば出力部２５はデータ演算部２４から判断結果を受け取った場合、該情報を管理用端末４０へ送信する。なお、管理用端末４０に送信した情報、日時を記憶部２３に記憶させてもよい。 The output unit 25 communicates with the management terminal 40 via the communication line. For example, when the output unit 25 receives the determination result from the data calculation unit 24, the output unit 25 transmits the information to the management terminal 40. The information and the date and time transmitted to the management terminal 40 may be stored in the storage unit 23.
　データ取得部２２、記憶部２３、データ演算部２４、出力部２５など制御装置２０の各処理部での各種処理は、各処理に対応したプログラムをＣＰＵなどのプロセッサが実行することにより実現される。また各プログラムはＲＯＭなどのメモリに予め格納されており、プロセッサはメモリからプログラムを読み出して実行することにより、各処理部において必要な処理を実行し、動作する。
　必要に応じてデータを一時的に記憶するＲＡＭなどの記録媒体を備えていてもよい。ＲＡＭにデータを一時的に保存することでプロセッサがＨＤＤなどの記憶媒体からデータを取得する時間を短縮できる。 Various processes in each process unit of the control device 20 such as the data acquisition unit 22, the storage unit 23, the data calculation unit 24, and the output unit 25 are realized by executing a program corresponding to each process by a processor such as a CPU. .. Further, each program is stored in a memory such as a ROM in advance, and the processor reads the program from the memory and executes it to execute necessary processing in each processing unit and operates.
A recording medium such as a RAM for temporarily storing data may be provided as needed. By temporarily storing the data in the RAM, the time for the processor to acquire the data from the storage medium such as the HDD can be shortened.
　記憶部２３はＨＤＤ、ＳＳＤなどの備付型の記憶媒体、ＳＤカードやＵＳＢメモリなどの可搬型の記憶媒体であってもよい。
　本発明では記憶部２３にデータベース（ＤＢＭＳ：データベース管理システム）領域を設けて、記憶部２３で受信した各データをデータベースの適切なレコードに入力して記憶させることが望ましい。例えば図４のデータベースでは一意に決まる固有の主キー、測定日レコード(Ｄａｙ)、測定時間レコード（Ｔｉｍｅ）、積算時間レコード、電流データレコード、電圧データレコード、２階微分レコード、平均値レコード、標準偏差レコード、しきい値レコード、判定結果レコードなど上記処理で生成されたデータを格納するレコードを作成し、同一の電圧データから派生する各データを同一の主キーに紐づけて各レコードに入力して保存することが望ましい。データベースには必要に応じて上記データが示すステータス、あるいは上記データをトリガーとするイベント、アクションなど任意の情報を保有するレコードを設けてもよい。 The storage unit 23 may be a built-in storage medium such as an HDD or SSD, or a portable storage medium such as an SD card or a USB memory.
In the present invention, it is desirable that a database (DBMS: database management system) area is provided in the storage unit 23, and each data received by the storage unit 23 is input to an appropriate record of the database and stored. For example, in the database of FIG. 4, a unique primary key, measurement date record (Day), measurement time record (Time), integration time record, current data record, voltage data record, second-order differential record, average value record, standard. Create a record to store the data generated by the above process such as deviation record, threshold value record, judgment result record, and input each data derived from the same voltage data to each record by associating it with the same primary key. It is desirable to save it. If necessary, the database may be provided with a record holding arbitrary information such as the status indicated by the above data, or an event or action triggered by the above data.
　出力部２５は、制御装置２０と外部の管理用端末４０との通信を行なう機能部であり、例えばＬＴＥ回線やインターネットなどの電気通信回線に接続可能な通信モジュール、或いは有線ＬＡＮなどに接続可能な通信モジュールにより構成されている。 The output unit 25 is a functional unit that communicates between the control device 20 and the external management terminal 40, and can be connected to, for example, a communication module that can be connected to a telecommunication line such as an LTE line or the Internet, or a wired LAN. It is composed of communication modules.
　通知する管理用端末４０は１または２以上であってもよい。管理用端末４０は制御装置２０と通信可能な端末であり、例えばスマートフォン、タブレット、ＰＤＡ、携帯電話などのモバイル情報端末、モバイルコンピューター、デスクトップコンピュータなどの各種通信モジュールを備えた端末が例示される。 The management terminal 40 to be notified may be 1 or 2 or more. The management terminal 40 is a terminal capable of communicating with the control device 20, and examples thereof include mobile information terminals such as smartphones, tablets, PDAs, and mobile phones, and terminals equipped with various communication modules such as mobile computers and desktop computers.
　管理者は管理用端末４０で受信した通知により、陽極３の状態を把握し、陽極の交換など適切な保守、管理ができる。
　また管理者は電気通信回線を通じて制御装置２０にアクセス、あるいは制御装置２０に任意に接続されたパーソナルコンピューターなどの端末などを介して、記憶部２３に格納したデータを確認できる。この際、データベースから任意のレコード、あるいはデータを抽出、加工するプログラムを使用することで容易に陽極の状態を確認できる。例えば電圧情報を利用してグラフ化して経時的な電圧の変化をモニタできるようにしてもよい。 The administrator can grasp the state of the anode 3 by the notification received by the management terminal 40, and can perform appropriate maintenance and management such as replacement of the anode.
Further, the administrator can access the control device 20 through a telecommunication line, or can confirm the data stored in the storage unit 23 via a terminal such as a personal computer arbitrarily connected to the control device 20. At this time, the state of the anode can be easily confirmed by using a program that extracts and processes arbitrary records or data from the database. For example, voltage information may be used to form a graph so that changes in voltage over time can be monitored.
　本願は、２０２０年１０月２１日に出願された日本国特許出願第２０２０－１７６８４９号に基づく優先権の利益を主張するものである。２０２０年１０月２１日に出願された日本国特許出願第２０２０－１７６８４９号の明細書の全内容が、本願に参考のため援用される。 This application claims the benefit of priority based on Japanese Patent Application No. 2020-176849 filed on October 21, 2020. The entire contents of the specification of Japanese Patent Application No. 2020-176849 filed on October 21, 2020 are incorporated herein by reference.
　１　金属回収装置
　２　電解槽
　３　陽極
　４　陰極
　５　駆動部
　６　金属イオン含有溶液
　７　電源ユニット
　８　電圧測定センサ
　９　電圧測定端子
１０　電圧測定部
１１　測定値出力部
１２　供給槽
１３　ポンプ
１４　軸
２０　制御装置
２１　Ａ／Ｄコンバーター
２２　データ取得部
２３　記憶部
２４　データ演算部
２５　出力部
４０　管理用端末 1 Metal recovery device 2 Electrolytic tank 3 Electrodenator 4 Catabol 5 Drive unit 6 Metal ion-containing solution 7 Power supply unit 8 Voltage measurement sensor 9 Voltage measurement terminal 10 Voltage measurement unit 11 Measurement value output unit 12 Supply tank 13 Pump 14 Shaft 20 Control device 21 A / D converter 22 Data acquisition unit 23 Storage unit 24 Data calculation unit 25 Output unit 40 Management terminal

Claims (3)

  1. 　金属回収装置の状態を監視するシステムであって、
    　前記状態監視システムは、
    　金属回収装置と、制御装置とを備え、
    　前記金属回収装置は、
    　陰極と陽極との間の電圧を測定する電圧測定部を有し、
    　前記制御装置は、
    　前記電圧測定部から受信した電圧データを処理するデータ演算部を有し、
    　前記データ演算部では、前記電圧データに基づいて１階微分値、または２階微分値を特徴量として算出すると共に、
    　前記特徴量と所定のしきい値と比較し、前記特徴量が前記しきい値以上であるときに、前記金属回収装置を要保守状態と診断することを特徴とする状態監視システム。     A system that monitors the status of metal recovery equipment.
    The condition monitoring system is
    Equipped with a metal recovery device and a control device,
    The metal recovery device is
    It has a voltage measuring unit that measures the voltage between the cathode and the anode.
    The control device is
    It has a data calculation unit that processes the voltage data received from the voltage measurement unit.
    The data calculation unit calculates the first-order differential value or the second-order differential value as a feature amount based on the voltage data, and at the same time,
    A condition monitoring system comprising comparing the feature amount with a predetermined threshold value and diagnosing the metal recovery device as a maintenance-required state when the feature amount is equal to or higher than the threshold value.
  2. 　前記制御装置は、しきい値と比較して得られた診断結果を、電気通信回線を通じて管理用端末に通知するものである請求項１に記載の状態監視システム。 The condition monitoring system according to claim 1, wherein the control device notifies the management terminal of the diagnosis result obtained in comparison with the threshold value through a telecommunication line.
  3. 　前記要保守状態の対象は電極触媒がコーティングされた陽極である請求項１または２に記載の状態監視システム。 The condition monitoring system according to claim 1 or 2, wherein the object of the maintenance-required state is an anode coated with an electrode catalyst.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61223544A (en) * 1985-03-12 1986-10-04 オボニック・シンセティック・マティリアルズ・カンパニ−・インコ−ポレ−テッド Method of analyzing multilayer structure
JPH09125292A (en) * 1995-11-01 1997-05-13 Permelec Electrode Ltd Electrode substrate
JPH10140386A (en) * 1996-11-11 1998-05-26 Chuo Seisakusho Ltd Copper electrodeposition vessel for alkaline etchant regenerating device
JPH10237698A (en) * 1997-02-28 1998-09-08 Kawasaki Steel Corp Method for diagnosing deterioration of iridium oxide anode and device therefor
JP2000144499A (en) * 1998-11-05 2000-05-26 Matsushita Electric Ind Co Ltd Electrode control device
WO2002046499A1 (en) * 2000-12-05 2002-06-13 Zakrytoe Aktsionernoe Obshestvo 'toxsoft' Method and control unit for operation of aluminum reduction cell

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61104096A (en) 1984-10-26 1986-05-22 Toppan Printing Co Ltd Apparatus for recovering metal
JP4699105B2 (en) 2005-06-24 2011-06-08 アサヒプリテック株式会社 Gold recovery method and apparatus
KR20080108886A (en) 2007-06-11 2008-12-16 아사히 프리텍 가부시키가이샤 Metal recovery equipment
JP6386625B2 (en) 2017-06-15 2018-09-05 アサヒプリテック株式会社 Ag electrorefining equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61223544A (en) * 1985-03-12 1986-10-04 オボニック・シンセティック・マティリアルズ・カンパニ−・インコ−ポレ−テッド Method of analyzing multilayer structure
JPH09125292A (en) * 1995-11-01 1997-05-13 Permelec Electrode Ltd Electrode substrate
JPH10140386A (en) * 1996-11-11 1998-05-26 Chuo Seisakusho Ltd Copper electrodeposition vessel for alkaline etchant regenerating device
JPH10237698A (en) * 1997-02-28 1998-09-08 Kawasaki Steel Corp Method for diagnosing deterioration of iridium oxide anode and device therefor
JP2000144499A (en) * 1998-11-05 2000-05-26 Matsushita Electric Ind Co Ltd Electrode control device
WO2002046499A1 (en) * 2000-12-05 2002-06-13 Zakrytoe Aktsionernoe Obshestvo 'toxsoft' Method and control unit for operation of aluminum reduction cell

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