Electrolytic cell control method, apparatus, system, and storage medium

Abstract

The application discloses an electrolytic cell control method, device, system and storage medium. The method comprises the following steps: monitoring the operation of each electrolytic cell during the parallel operation of the electrolytic cells; when it is detected that there is a target electrolytic cell that needs to exit the operation, gradually reducing the load of the target electrolytic cell and gradually increasing the load of other electrolytic cells except the target electrolytic cell, wherein the total increase speed of the load of other electrolytic cells is equal to the reduction speed of the load of the target electrolytic cell; and when the load of the target electrolytic cell is reduced to 0, controlling the target electrolytic cell to exit the operation. By monitoring and controlling the electrolytic cells, the electrolytic cells can be smoothly exited, and the stability of the overall load of the electrolytic cell system can be maintained.

Description

Technical Field

[0001] This application relates to the field of electrolytic cell control technology, and in particular to an electrolytic cell control method, apparatus, system and storage medium. Background Technology

[0002] Electrolysis has wide applications in industrial production. Since the reaction selectivity and conversion rate of the electrolysis process are closely related to the rectifier current output, the stability of the electrolytic cell system load is a key factor in ensuring the smooth operation of the electrolytic reaction. A typical factory electrolytic cell system consists of hundreds of cells. During normal production, if an abnormality occurs in one branch of the electrolytic cell system, and the abnormal power is withdrawn for maintenance, it will lead to instability in the overall load of the electrolytic cell system, thus affecting the downstream distillation effect. Therefore, how to provide a control method for multi-stage parallel electrolytic cell systems to maintain the stability of the overall load of the electrolytic cell system when a cell is withdrawn has become an urgent technical problem to be solved. Summary of the Invention

[0003] This application provides an electrolytic cell control method, apparatus, system, and storage medium to maintain the stability of the overall load of the electrolytic cell system when the electrolytic cell is shut down.

[0004] This application provides a method for controlling an electrolytic cell, including:

[0005] During the operation of parallel electrolytic cells, the operating status of each electrolytic cell is monitored;

[0006] When a target electrolytic cell that needs to be shut down is detected, the load of the target electrolytic cell is gradually reduced, and the load of other electrolytic cells is gradually increased, wherein the total rate of increase of the load of other electrolytic cells is equal to the rate of decrease of the load of the target electrolytic cell.

[0007] When the load of the target electrolytic cell drops to 0, the target electrolytic cell is controlled to stop operation.

[0008] The beneficial effects of this application are as follows: By monitoring the operation of each electrolyzer during the operation of parallel electrolyzers; when a target electrolyzer that needs to be shut down is detected, the load of the target electrolyzer is gradually reduced, while the load of other normally operating electrolyzers is gradually increased. The total rate of increase of the load of other electrolyzers is equal to the rate of decrease of the load of the target electrolyzer, thereby ensuring that the overall load of the electrolyzer system remains unchanged, avoiding large fluctuations in the load of the electrolyzer system that could affect the distillation effect of the downstream distillation system. When the load of the target electrolyzer drops to 0, the target electrolyzer is shut down.

[0009] In one embodiment, the method further includes:

[0010] When a new electrolytic cell is detected to be added, the load of the original electrolytic cell is gradually reduced, and the load of the new electrolytic cell is gradually increased. The rate at which the load of the new electrolytic cell is increased is the same as the overall rate at which the load of the original electrolytic cell is reduced.

[0011] When the load of the new electrolytic cell is the same as the load of the original electrolytic cell, the adjustment of the load of all electrolytic cells shall be stopped.

[0012] In one embodiment, the method further includes:

[0013] When the load of other electrolytic cells besides the target electrolytic cell increases to the upper limit of the allowable value, and the load of the target electrolytic cell does not drop to 0, the load of the target electrolytic cell is further reduced, and the overall load of the parallel electrolytic cells after the target electrolytic cell is taken out of operation is calculated.

[0014] The feed flow rate of the parallel electrolytic cells is adjusted according to the correspondence between the electrolytic cell load and the feed flow rate, so that the feed flow rate of the parallel electrolytic cells corresponds to the overall load of the parallel electrolytic cells after the target electrolytic cell is taken out of operation.

[0015] In one embodiment, the method further includes:

[0016] When adjusting the feed flow rate of the parallel electrolyzer, determine the feed rate of the distillation system after the adjustment of the feed flow rate of the parallel electrolyzer;

[0017] The steam flow rate of the distillation system is adjusted according to the feed rate of the distillation system, so that the adjusted steam flow rate corresponds to the feed rate of the distillation system after the adjustment of the parallel electrolytic cell.

[0018] In one embodiment, controlling the steam flow rate of the distillation system based on the feed rate of the distillation system includes:

[0019] The feed rate of the distillation system is sent to the control device used to control the distillation system, so that the control device adaptively adjusts the steam rate of the distillation system.

[0020] In one embodiment, controlling the steam flow rate of the distillation system based on the feed rate of the distillation system includes:

[0021] The target steam quantity corresponding to the feed rate of the distillation system after the feed flow rate of the parallel electrolyzer is determined based on the correspondence table between the feed rate and steam quantity of the distillation system.

[0022] A control signal is sent to the distillation system to adjust the current steam quantity to the target steam quantity, so that the distillation system adjusts the current steam quantity to the target steam quantity according to the control signal.

[0023] In one embodiment, the method further includes:

[0024] When an adjustment instruction for the overall load of the parallel electrolyzers is received, the second target load of each electrolyzer after adjustment is calculated based on the first target load in the adjustment instruction, wherein the sum of each second target load is equal to the first target load;

[0025] The load on each electrolytic cell is gradually adjusted based on the calculation results;

[0026] The adjustment is stopped when each electrolyzer is adjusted to the second target load corresponding to each electrolyzer.

[0027] This application also provides an electrolytic cell control device, including:

[0028] The monitoring module is used to monitor the operating status of each electrolyzer during the operation of parallel electrolyzers;

[0029] The load reduction module is used to gradually reduce the load of the target electrolytic cell when it is detected that there is a target electrolytic cell that needs to be shut down, and gradually increase the load of other electrolytic cells besides the target electrolytic cell, wherein the total increase rate of the load of other electrolytic cells is equal to the decrease rate of the load of the target electrolytic cell.

[0030] The exit module is used to control the target electrolytic cell to exit operation when the load of the target electrolytic cell drops to 0.

[0031] In one embodiment, the apparatus further includes:

[0032] The boosting module is used to gradually reduce the load of the original electrolytic cell and gradually increase the load of the new electrolytic cell when a new electrolytic cell is detected to be added, wherein the rate of increase of the load of the new electrolytic cell is the same as the overall rate of decrease of the load of the original electrolytic cell.

[0033] The boosting module is also used to stop adjusting the load of all electrolytic cells when the load of the new electrolytic cell is the same as the load of the original electrolytic cell.

[0034] In one embodiment, the apparatus further includes:

[0035] The first calculation module is used to continue reducing the load of the target electrolytic cell when the load of other electrolytic cells besides the target electrolytic cell increases to the upper limit of the allowable value, and the load of the target electrolytic cell has not dropped to 0, and to calculate the overall load of the parallel electrolytic cells after the target electrolytic cell is taken out of operation;

[0036] The feeding module is used to adjust the feed flow rate of the parallel electrolytic cells according to the correspondence between the electrolytic cell load and the feed flow rate, so that the feed flow rate of the parallel electrolytic cells corresponds to the overall load of the parallel electrolytic cells after the target electrolytic cell is taken out of operation.

[0037] In one embodiment, the apparatus further includes:

[0038] The determination module is used to determine the feed rate of the distillation system after the feed rate of the parallel electrolyzer is adjusted when the feed rate of the parallel electrolyzer is adjusted.

[0039] The first adjustment module is used to control the steam volume of the distillation system according to the feed volume of the distillation system, so that the adjusted steam volume corresponds to the feed volume of the distillation system after the adjustment of the parallel electrolytic cell.

[0040] In one embodiment, the adjustment module includes:

[0041] The sending submodule is used to send the feed rate of the distillation system to the control device for controlling the distillation system, so that the control device can adaptively adjust the steam rate of the distillation system.

[0042] In one embodiment, the adjustment module includes:

[0043] The determination submodule is used to determine the target steam quantity corresponding to the feed rate of the distillation system after the feed flow rate of the parallel electrolyzer is adjusted, based on the correspondence table between the feed rate and steam quantity of the distillation system.

[0044] The sending submodule is also used to send a control signal to the distillation system to adjust the current steam quantity to the target steam quantity, so that the distillation system adjusts the current steam quantity to the target steam quantity according to the control signal.

[0045] In one embodiment, the apparatus further includes:

[0046] The second calculation module is also used to calculate the second target load of each electrolyzer after adjustment based on the first target load in the adjustment instruction when an adjustment instruction for the overall load of the parallel electrolyzers is received, wherein the sum of each second target load is equal to the first target load.

[0047] The second adjustment module is used to gradually adjust the load of each electrolytic cell based on the calculation results;

[0048] The second adjustment module is also used to stop the adjustment when each electrolytic cell has been adjusted to the second target load corresponding to each electrolytic cell.

[0049] This application also provides an electrolytic cell control system, including:

[0050] At least one processor; and,

[0051] A memory communicatively connected to the at least one processor; wherein,

[0052] The memory stores instructions that can be executed by the at least one processor to implement the electrolytic cell control method described in any of the above embodiments.

[0053] This application also provides a computer-readable storage medium, which, when the instructions in the storage medium are executed by a processor corresponding to the electrolytic cell control system, enables the electrolytic cell control system to implement the electrolytic cell control method described in any of the above embodiments.

[0054] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.

[0055] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0056] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the embodiments of the present application to explain the application and do not constitute a limitation thereof. In the drawings:

[0057] Figure 1 This is a flowchart of an electrolytic cell control method according to an embodiment of this application;

[0058] Figure 2 This is a structural diagram of an electrolytic cell control device according to an embodiment of this application;

[0059] Figure 3 This is a schematic diagram of the hardware structure of an electrolytic cell control system according to one embodiment of this application. Detailed Implementation

[0060] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0061] Figure 1 This is a flowchart of an electrolytic cell control method according to an embodiment of this application, such as... Figure 1 As shown, the method can be implemented as follows: S101-S103:

[0062] In step S101, during the operation of the parallel electrolytic cells, the operating status of each electrolytic cell is monitored;

[0063] In step S102, when a target electrolytic cell that needs to be shut down is detected, the load of the target electrolytic cell is gradually reduced, and the load of other electrolytic cells is gradually increased, wherein the total rate of increase of the load of other electrolytic cells is equal to the rate of decrease of the load of the target electrolytic cell.

[0064] In step S103, when the load of the target electrolytic cell is reduced to 0, the target electrolytic cell is controlled to exit operation.

[0065] During the operation of parallel electrolytic cells, the operating status of each cell is monitored. For example, the cell resistance can be monitored to determine if the cell is operating normally. When the cell is operating normally, the cell resistance is generally stable. When the cell resistance fluctuates significantly and exceeds a preset threshold, the corresponding cell is considered to be operating abnormally and needs to be shut down. Alternatively, infrared thermal images of the cell can be acquired using thermal imaging equipment and corresponding cell control software. The processing of these images can then determine if any abnormalities have occurred and if shutdown is necessary. This application does not limit the specific monitoring methods.

[0066] When a target electrolytic cell is detected that needs to be shut down, the load of the target electrolytic cell is gradually reduced, while the loads of other electrolytic cells are gradually increased. The total rate of increase in the loads of the other electrolytic cells is equal to the rate of decrease in the load of the target electrolytic cell. In normal production, assuming a parallel electrolytic cell system has n electrolytic cells, when the k-th electrolytic cell malfunctions and needs to be temporarily shut down for maintenance, to ensure that the overall load of the electrolytic cell system remains constant during the maintenance shutdown of the malfunctioning branch electrolytic cell, thereby reducing the impact on the downstream distillation system and extending the stable operation cycle of the unit, the load of the malfunctioning branch electrolytic cell is controlled at a rate v during the shutdown process. k The load is reduced at a uniform rate, while the load on other electrolyzers in normally operating branches is increased at a uniform rate. Furthermore, to ensure the overall electrolyzer system load remains constant, the rate at which the load decreases in the abnormal branch electrolyzers is kept equal to the overall rate of load increase of other electrolyzers, i.e., v0. k =∑ i≠k v iSpecifically, in this application, the flow transmitters of the corresponding branches are controlled in cascade by the electrolytic cells. The electrolytic cell current output is used as the set value for the feed flow controller of each branch. Therefore, the feed flow rate is determined by the current of the electrolytic cell, and the current always matches the feed rate. That is, as the output current of the abnormal branch decreases, the feed flow rate and load of the electrolytic cell that needs to be shut down decrease, and correspondingly, the amount of load increase required for other normally operating electrolytic cells is calculated in real time. Based on this calculated value, the current of the branches of other normally operating electrolytic cells is increased synchronously, thereby increasing the feed flow rate of each branch of the electrolytic cell. This achieves the distribution of the feed load of the electrolytic cell that needs to be shut down to the branches of other normally operating electrolytic cells. It can be understood that, since the current always matches the feed rate, the feed composition and conversion rate of the electrolytic cells remain unchanged throughout the adjustment process. Therefore, the overall discharge flow rate and discharge composition of the electrolytic cells, that is, the feed composition of the distillation system, remain unchanged.

[0067] When the load of the target electrolytic cell drops to 0, the target electrolytic cell is controlled to stop operation.

[0068] It should be noted that, in order to control the overall feed situation of the electrolytic cell during the exit from the target electrolytic cell, the overall feed situation of the electrolytic cell is calculated by the corresponding calculation unit. Specifically, the sum of the feed flow rates of each parallel branch feed flow controller of the electrolytic cell system is obtained by the following formula:

[0069]

[0070] Where B represents the sum of the feed flow rates of all parallel branches in the electrolytic cell system, n represents the number of parallel electrolytic cells in the electrolytic cell system, and V i This represents the feed flow rate of the i-th parallel electrolytic cell branch in the electrolytic cell system.

[0071] Then, as the feed flow rate of the electrolytic cell that needs to be decommissioned gradually decreases, in order to ensure that the overall load of the electrolytic cell system remains unchanged, the feed rate of each electrolytic cell needs to be adjusted according to the overall feed rate and the current feed rate ratio of each electrolytic cell. Therefore, the theoretical feed rate corresponding to the other normally operating electrolytic cells in the electrolytic cell system is first calculated by the corresponding calculation unit using the following formula:

[0072]

[0073] Among them, F m V represents the theoretical feed flow rate of each parallel branch in the electrolytic cell system. m V represents the feed flow rate of the m-th parallel branch in the electrolytic cell system, where n represents the number of parallel electrolytic cells in the system. i Let F represent the feed flow rate of the i-th parallel electrolytic cell in the electrolytic cell system, and let F represent the total feed flow rate of the electrolytic cell system.

[0074] Subsequently, the calculation unit sends the feed rate of each electrolytic cell to the corresponding controller. The controller compares the calculated feed rate of each electrolytic cell with the maximum allowable feed rate of a single electrolytic cell and controls the rectifier of each electrolytic cell according to the preset comparison result to change the output current of the electrolytic cell. This output current then controls the flow transmitters of the corresponding branches in a cascaded manner, changing the setpoint of the flow transmitters and thus altering the feed flow rate of the electrolytic cell. Specifically, when an electrolytic cell to be withdrawn is initially withdrawn, since the load and flow rate of each electrolytic cell do not change significantly, the load increase of other electrolytic cells never exceeds the maximum allowable feed rate limit of the corresponding electrolytic cell. Therefore, the sum of the feed flow rates B of all parallel branches of the electrolytic cell system and the total feed flow rate F of the electrolytic cell system are fixed values ​​to maintain a constant overall feed load of the electrolytic cell system, thereby ensuring that the feed flow rate and feed composition of the distillation system remain unchanged. Therefore, the feed rates of other electrolytic cells are adjusted based on the theoretical values ​​of the feed flow rates of other normally operating electrolytic cells calculated in real time. As the load and feed rate of the abnormal electrolyzer continue to decrease, the load and feed rate of other normally operating electrolyzers continue to increase. This may lead to a situation where the load of a normally operating branch exceeds the maximum allowable feed rate of that branch's electrolyzer. In this case, the system operates according to the maximum feed load of the corresponding electrolyzer. Correspondingly, the total feed flow rate B of all parallel branches of the electrolyzer system and the total feed flow rate F of the electrolyzer system also change. The rectifier of the corresponding branch changes the output current of the electrolyzer, which in turn changes the set value of the flow transmitter through cascade control of the corresponding branch, reducing the feed flow rate of the corresponding electrolyzer. Since the feed flow rate is controlled by current cascade, the current and feed rate always maintain a certain ratio. Therefore, the conversion rate of the reactants remains unchanged, that is, the feed composition of the distillation system remains unchanged, only the feed rate decreases.

[0075] In one embodiment of this application, to ensure the overall load stability of the electrolytic cell system and simultaneously monitor the discharge flow rate of the electrolytic cell system, the total discharge flow rate of all parallel branches of the electrolytic cell system is specifically calculated using the following formula:

[0076]

[0077] Where C represents the sum of the measured discharge flow rates of all parallel branches in the electrolytic cell system, and T i This indicates the measured discharge flow rate of each electrolytic cell branch.

[0078] Furthermore, by monitoring the measured value B of the feed flow rate of each parallel branch of the electrolytic cell system, which is equal to the sum C of the measured values ​​C of the discharge flow rate of each parallel branch of the electrolytic cell, the overall stability of the electrolytic cell system is ensured.

[0079] In this application, to reduce interference with the distillation system, when adjusting the feed flow rate of the parallel electrolyzer, the feed rate of the distillation system after the adjustment of the parallel electrolyzer feed flow rate is determined. The feed rate of the distillation system is the same as the discharge flow rate of the electrolyzer system. The feed rate of the distillation system is sent to the control equipment used to control the distillation system, so that the control equipment adaptively adjusts the adjustment steam flow rate of the distillation system. Because the reboiler temperature control loop of the distillation system is corrected in advance based on the feed rate of the distillation system, the steam flow rate of the distillation system is precisely controlled, ensuring that the adjusted steam flow rate corresponds to the feed rate of the distillation system after the adjustment of the parallel electrolyzer, thus reducing the interference of the electrolyzer system adjustment process on the distillation effect of the distillation system.

[0080] The beneficial effects of this application are as follows: By monitoring the operation of each electrolyzer during the operation of parallel electrolyzers; when a target electrolyzer that needs to be shut down is detected, the load of the target electrolyzer is gradually reduced, while the load of other normally operating electrolyzers is gradually increased. The total rate of increase of the load of other electrolyzers is equal to the rate of decrease of the load of the target electrolyzer, thereby ensuring that the overall load of the electrolyzer system remains unchanged, avoiding large fluctuations in the load of the electrolyzer system that could affect the distillation effect of the downstream distillation system. When the load of the target electrolyzer drops to 0, the target electrolyzer is shut down.

[0081] In one embodiment, the method may also be implemented as follows: steps A1-A2:

[0082] In step A1, when a new electrolytic cell is detected to be added, the load of the original electrolytic cell is gradually reduced, and the load of the new electrolytic cell is gradually increased. The rate at which the load of the new electrolytic cell is increased is the same as the overall rate at which the load of the original electrolytic cell is reduced.

[0083] In step A2, when the load of the new electrolytic cell is the same as the load of the original electrolytic cell, the adjustment of the load of all electrolytic cells is stopped.

[0084] In this embodiment, when the corresponding control switch is activated, indicating that a new electrolytic cell has been added or an abnormal electrolytic cell has been restored to normal operation and put back into use, the load of the electrolytic cell is gradually increased through the rectifier of the electrolytic cell until it reaches a preset value. At the same time, the controller controls the load of the existing normally operating electrolytic cells to gradually decrease, and controls the load increase rate of the newly added electrolytic cell to be equal to the total decrease rate of the load of the existing electrolytic cells.

[0085] Meanwhile, the feed flow rate of each electrolytic cell is determined by the calculation unit, and the feed amount of each electrolytic cell is sent to the corresponding controller to keep the overall feed flow rate of the electrolytic cell system constant.

[0086] In one embodiment, the method may also be implemented as steps B1-B2:

[0087] In step B1, when the load of other electrolytic cells besides the target electrolytic cell increases to the upper limit of the allowable value, and the load of the target electrolytic cell does not drop to 0, the load of the target electrolytic cell is further reduced, and the overall load of the parallel electrolytic cells after the target electrolytic cell is taken out of operation is calculated.

[0088] In step B2, the feed flow rate of the parallel electrolytic cells is adjusted according to the correspondence between the electrolytic cell load and the feed flow rate, so that the feed flow rate of the parallel electrolytic cells corresponds to the overall load of the parallel electrolytic cells after the target electrolytic cell is taken out of operation.

[0089] In this embodiment, when the load of other electrolytic cells besides the target electrolytic cell increases to the allowed upper limit, but the load of the target electrolytic cell does not decrease to 0, then the other electrolytic cells are controlled to operate at their maximum allowed load, while the load of the target electrolytic cell continues to decrease, and the overall load of the parallel electrolytic cells after the target electrolytic cell is taken out of operation is calculated. Specifically, the total feed flow rate of each parallel branch feed valve in the electrolytic cell system is obtained using the following formula:

[0090]

[0091] Where B represents the sum of the feed flow rates of all parallel branches in the electrolytic cell system, n represents the number of parallel electrolytic cells in the electrolytic cell system, and V i This represents the feed flow rate of the i-th parallel electrolytic cell branch in the electrolytic cell system.

[0092] Then, the feed flow rate of the parallel electrolyzers is adjusted according to the correspondence between the electrolyzer load and the feed flow rate, so that the feed flow rate of the parallel electrolyzers corresponds to the overall load of the parallel electrolyzers after the target electrolyzer is taken out of operation. Specifically, the feed rate corresponding to other normally operating electrolyzers in the electrolyzer system is calculated using the following formula:

[0093]

[0094] Among them, F m V represents the feed flow rate setpoint for each parallel branch of the electrolytic cell system. m V represents the feed flow rate of the m-th parallel branch in the electrolytic cell system, where n represents the number of parallel electrolytic cells in the system. i Let F represent the feed flow rate of the i-th parallel electrolytic cell in the electrolytic cell system, and let F represent the total feed flow rate of the electrolytic cell system. Since this application controls the feed flow rate through current cascade control, the current and feed rate always maintain a certain ratio, and the conversion rate of the reactants remains constant. In other words, the feed composition of the distillation system remains unchanged; only the feed rate decreases.

[0095] In one embodiment, the method may also be implemented as follows: C1-C2:

[0096] In step C1, when adjusting the feed flow rate of the parallel electrolyzer, the feed rate of the distillation system after the adjustment of the feed flow rate of the parallel electrolyzer is determined;

[0097] In step C2, the steam flow rate of the distillation system is adjusted according to the feed rate of the distillation system so that the adjusted steam flow rate corresponds to the feed rate of the distillation system after the adjustment of the parallel electrolytic cell.

[0098] In this embodiment, to ensure the overall stability of the distillation system, when the feed flow rate of the parallel electrolyzers is adjusted, the feed rate of the rectification system after the adjustment is determined based on the relationship between the feed rates of the electrolyzer system and the distillation system. Since the feed rate of the rectification system is the same as the discharge flow rate of the electrolyzer system, the feed rate of the rectification system can be obtained by monitoring the discharge flow rate of the electrolyzer system. Specifically, the sum of the discharge flow rates of all parallel branches of the electrolyzer system is calculated using the following formula:

[0099]

[0100] Where C represents the sum of the measured discharge flow rates of all parallel branches in the electrolytic cell system, and T i This indicates the measured discharge flow rate of each electrolytic cell branch.

[0101] The steam flow rate of the distillation system is adjusted based on the feed rate of the distillation system to ensure that the adjusted steam flow rate corresponds to the feed rate of the distillation system after adjustment of the parallel electrolyzer. Specifically, the feed rate of the distillation system can be sent to the control equipment used to control the distillation system, so that the control equipment can adaptively adjust the steam flow rate of the distillation system. Alternatively, the target steam flow rate corresponding to the feed rate of the distillation system after adjustment of the feed flow rate of the parallel electrolyzer can be determined according to the correspondence table between the feed rate and steam flow rate of the distillation system; a control signal for adjusting the current steam flow rate to the target steam flow rate is sent to the distillation system, so that the distillation system adjusts the current steam flow rate to the target steam flow rate according to the control signal. When the control equipment adjusts the steam flow rate of the distillation system, it can do so smoothly according to a preset step size or preset rate; or it can determine the adjustment status of the feed flow rate of the electrolyzer according to a preset time interval, and then determine the feed rate of the distillation system accordingly, and adjust the steam flow rate of the distillation system based on the corresponding feed rate.

[0102] In one embodiment, step C2 above can be implemented as step C21:

[0103] The feed rate of the distillation system is sent to the control device used to control the distillation system, so that the control device adaptively adjusts the steam rate of the distillation system.

[0104] In one embodiment, step C2 above can also be implemented as step C22:

[0105] The target steam quantity corresponding to the feed rate of the distillation system after the feed flow rate of the parallel electrolyzer is determined based on the correspondence table between the feed rate and steam quantity of the distillation system.

[0106] A control signal is sent to the distillation system to adjust the current steam quantity to the target steam quantity, so that the distillation system adjusts the current steam quantity to the target steam quantity according to the control signal.

[0107] In one embodiment, the method may also be implemented as steps D1-D3:

[0108] In step D1, when an adjustment instruction for the overall load of the parallel electrolyzers is received, the second target load of each electrolyzer after adjustment is calculated according to the first target load in the adjustment instruction, wherein the sum of each second target load is equal to the first target load;

[0109] In step D2, the load of each electrolytic cell is gradually adjusted based on the calculation results;

[0110] In step D3, the adjustment is stopped when each electrolytic cell is adjusted to the second target load corresponding to each electrolytic cell.

[0111] In this embodiment, when the overall load of the electrolytic cell system needs to be adjusted to a first target load, the output current of each electrolytic cell is calculated according to the first target load in the adjustment command. The flow transmitters of the corresponding branches are controlled in cascade by the electrolytic cells. Therefore, by changing the output current of the electrolytic cells, the set value of the flow controller of the corresponding branch is changed, thereby adjusting the load of each electrolytic cell to a second target load. If the load increase of each branch electrolytic cell does not exceed its corresponding maximum load, the sum of each second target load is equal to the first target load; if the load increase of each electrolytic cell exceeds the maximum load of the corresponding branch electrolytic cell, the sum of each second target load is less than the first target load. Furthermore, the first target load can be allocated according to the ratio of the first target load to the current electrolytic cell load to determine the second target load corresponding to each electrolytic cell load. The sum of each second target load is equal to the first target load, and the load ratio of each electrolytic cell remains unchanged, thus ensuring the stability of the load of each electrolytic cell during the adjustment process.

[0112] Then, the control rectifier adjusts the load of each electrolytic cell according to the calculation results. The adjustment stops when each electrolytic cell is adjusted to the second target load corresponding to each electrolytic cell.

[0113] Furthermore, when the calculated second target load indicates that the load of a certain electrolytic cell exceeds its maximum allowable load, the load of that electrolytic cell is adjusted to the maximum allowable value. The load of the remaining electrolytic cells is then recalculated according to the current operating load ratio to obtain the third target load. The rectifier is then controlled to adjust the load of the electrolytic cells according to the third target load.

[0114] Figure 2 This is a structural diagram of an electrolytic cell control device according to an embodiment of this application, as shown below. Figure 2 As shown, the device includes:

[0115] The monitoring module 201 is used to monitor the operating status of each electrolytic cell during the operation of the parallel electrolytic cells;

[0116] The load reduction module 202 is used to gradually reduce the load of the target electrolytic cell when it is detected that there is a target electrolytic cell that needs to be shut down, and gradually increase the load of other electrolytic cells besides the target electrolytic cell, wherein the total increase rate of the load of other electrolytic cells is equal to the decrease rate of the load of the target electrolytic cell.

[0117] The exit module 203 is used to control the target electrolytic cell to exit operation when the load of the target electrolytic cell drops to 0.

[0118] In one embodiment, the apparatus further includes:

[0119] The boosting module is used to gradually reduce the load of the original electrolytic cell and gradually increase the load of the new electrolytic cell when a new electrolytic cell is detected to be added, wherein the rate of increase of the load of the new electrolytic cell is the same as the overall rate of decrease of the load of the original electrolytic cell.

[0120] The boosting module is also used to stop adjusting the load of all electrolytic cells when the load of the new electrolytic cell is the same as the load of the original electrolytic cell.

[0121] In one embodiment, the apparatus further includes:

[0122] The first calculation module is used to continue reducing the load of the target electrolytic cell when the load of other electrolytic cells besides the target electrolytic cell increases to the upper limit of the allowable value, and the load of the target electrolytic cell has not dropped to 0, and to calculate the overall load of the parallel electrolytic cells after the target electrolytic cell is taken out of operation;

[0123] The feeding module is used to adjust the feed flow rate of the parallel electrolytic cells according to the correspondence between the electrolytic cell load and the feed flow rate, so that the feed flow rate of the parallel electrolytic cells corresponds to the overall load of the parallel electrolytic cells after the target electrolytic cell is taken out of operation.

[0124] In one embodiment, the apparatus further includes:

[0125] The determination module is used to determine the feed rate of the distillation system after the feed rate of the parallel electrolyzer is adjusted when the feed rate of the parallel electrolyzer is adjusted.

[0126] The first adjustment module is used to control the steam volume of the distillation system according to the feed volume of the distillation system, so that the adjusted steam volume corresponds to the feed volume of the distillation system after the adjustment of the parallel electrolytic cell.

[0127] In one embodiment, the adjustment module includes:

[0128] The sending submodule is used to send the feed rate of the distillation system to the control device for controlling the distillation system, so that the control device can adaptively adjust the steam rate of the distillation system.

[0129] In one embodiment, the adjustment module includes:

[0130] The determination submodule is used to determine the target steam quantity corresponding to the feed rate of the distillation system after the feed flow rate of the parallel electrolyzer is adjusted, based on the correspondence table between the feed rate and steam quantity of the distillation system.

[0131] The sending submodule is also used to send a control signal to the distillation system to adjust the current steam quantity to the target steam quantity, so that the distillation system adjusts the current steam quantity to the target steam quantity according to the control signal.

[0132] In one embodiment, the apparatus further includes:

[0133] The second calculation module is also used to calculate the second target load of each electrolyzer after adjustment based on the first target load in the adjustment instruction when an adjustment instruction for the overall load of the parallel electrolyzers is received, wherein the sum of each second target load is equal to the first target load.

[0134] The second adjustment module is used to gradually adjust the load of each electrolytic cell based on the calculation results;

[0135] The second adjustment module is also used to stop the adjustment when each electrolytic cell has been adjusted to the second target load corresponding to each electrolytic cell.

[0136] Figure 3 This is a schematic diagram of the hardware structure of an electrolytic cell control system according to an embodiment of this application, as shown below. Figure 3As shown, the electrolytic cell control system includes:

[0137] At least one processor 320; and,

[0138] Memory 304 communicatively connected to the at least one processor 320; wherein,

[0139] The memory 304 stores instructions that can be executed by the at least one processor 320 to implement the electrolytic cell control method described in any of the above embodiments.

[0140] Reference Figure 3 The electrolytic cell control system 300 may include one or more of the following components: processing component 302, memory 304, power supply component 306, multimedia component 308, audio component 310, input / output (I / O) interface 312, sensor component 314, and communication component 316.

[0141] Processing component 302 typically controls the overall operation of the electrolytic cell control system 300. Processing component 302 may include one or more processors 320 to execute instructions to complete all or part of the steps of the method described above. Furthermore, processing component 302 may include one or more modules to facilitate interaction between processing component 302 and other components. For example, processing component 302 may include a multimedia module to facilitate interaction between multimedia component 308 and processing component 302.

[0142] Memory 304 is configured to store various types of data to support the operation of the electrolytic cell control system 300. Examples of this data include instructions for any application or method operating on the electrolytic cell control system 300, such as text, images, videos, etc. Memory 304 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0143] Power supply assembly 306 provides power to various components of the electrolytic cell control system 300. Power supply assembly 306 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the onboard control system 300.

[0144] The multimedia component 308 includes a screen that provides an output interface between the electrolytic cell control system 300 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component 308 may also include a front-facing camera and / or a rear-facing camera. When the electrolytic cell control system 300 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0145] Audio component 310 is configured to output and / or input audio signals. For example, audio component 310 includes a microphone (MIC) configured to receive external audio signals when the electrolytic cell control system 300 is in an operating mode, such as alarm mode, recording mode, voice recognition mode, and voice output mode. The received audio signals may be further stored in memory 304 or transmitted via communication component 316. In some embodiments, audio component 310 also includes a speaker for outputting audio signals.

[0146] I / O interface 312 provides an interface between processing component 302 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0147] Sensor assembly 314 includes one or more sensors for providing status assessments of various aspects of the electrolytic cell control system 300. For example, sensor assembly 314 may include a sound sensor. Additionally, sensor assembly 314 can detect the on / off state of the electrolytic cell control system 300, the relative positioning of components (e.g., the display and keypad of the electrolytic cell control system 300), and the operating status of the electrolytic cell control system 300 or a component thereof, such as the operating status of the air distribution plate, structural status, the operating status of the discharge scraper, the orientation or acceleration / deceleration of the electrolytic cell control system 300, and temperature changes of the electrolytic cell control system 300. Sensor assembly 314 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 314 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 314 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, a material buildup thickness sensor, or a temperature sensor.

[0148] Communication component 316 is configured to enable the electrolytic cell control system 300 to provide wired or wireless communication capabilities with other devices and cloud platforms. The electrolytic cell control system 300 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 316 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 316 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0149] In an exemplary embodiment, the electrolytic cell control system 300 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the electrolytic cell control method described in any of the above embodiments.

[0150] This application also provides a computer-readable storage medium, which, when the instructions in the storage medium are executed by a processor corresponding to the electrolytic cell control system, enables the electrolytic cell control system to implement the electrolytic cell control method described in any of the above embodiments.

[0151] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0152] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0153] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0154] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0155] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A method of controlling an electrolytic cell, characterized by, The method comprises the following steps: monitoring the running conditions of each electrolytic cell during the operation of the parallel electrolytic cells; when it is detected that there is a target electrolytic cell that needs to be taken out of operation, gradually reducing the load of the target electrolytic cell and gradually increasing the load of the electrolytic cells other than the target electrolytic cell, wherein the total increase speed of the load of the electrolytic cells other than the target electrolytic cell is equal to the reduction speed of the load of the target electrolytic cell; when the load of the target electrolytic cell is reduced to 0, controlling the target electrolytic cell to be taken out of operation; The method further comprises the following steps: when the load of the electrolytic cells other than the target electrolytic cell is increased to the allowed upper limit value and the load of the target electrolytic cell is not reduced to 0, continuing to reduce the load of the target electrolytic cell and calculating the overall load of the parallel electrolytic cells after the target electrolytic cell is taken out of operation; adjusting the feed flow of the parallel electrolytic cells according to the corresponding relationship between the electrolytic cell load and the feed flow, so that the feed flow of the parallel electrolytic cells corresponds to the overall load of the parallel electrolytic cells after the target electrolytic cell is taken out of operation.

2. The method of claim 1, wherein, The method further comprises the following steps: when it is detected that a new electrolytic cell is added, gradually reducing the load of the original electrolytic cells and gradually increasing the load of the new electrolytic cell, wherein the increase speed of the load of the new electrolytic cell is equal to the overall reduction speed of the load of the original electrolytic cells; when the load of the new electrolytic cell is equal to the load of the original electrolytic cells, stopping the adjustment of the load of all electrolytic cells.

3. The method of claim 1, wherein, The method further comprises the following steps: when the feed flow of the parallel electrolytic cells is adjusted, determining the feed amount of the rectification system after the adjustment of the feed flow of the parallel electrolytic cells; controlling the rectification system to adjust the steam amount according to the feed amount of the rectification system, so that the adjusted steam amount corresponds to the feed amount of the rectification system after the adjustment of the feed flow of the parallel electrolytic cells.

4. The method of claim 3, wherein, The method further comprises the following steps: sending the feed amount of the rectification system to a control device for controlling the rectification system, so that the control device adaptively adjusts the steam amount of the rectification system.

5. The method of claim 3, wherein, The method further comprises the following steps: determining the target steam amount corresponding to the feed amount of the rectification system after the adjustment of the feed flow of the parallel electrolytic cells according to a corresponding relationship table between the feed amount of the rectification system and the steam amount; sending a control signal to the rectification system to control the rectification system to adjust the current steam amount to the target steam amount, so that the rectification system adjusts the current steam amount to the target steam amount according to the control signal.

6. The method of claim 1, wherein, The method further comprises the following steps: when an adjustment instruction for the overall load of the parallel electrolytic cells is received, calculating the second target load of each electrolytic cell after the adjustment according to the first target load in the adjustment instruction, wherein the sum of each second target load is equal to the first target load; gradually adjusting the load of each electrolytic cell according to the calculation result; stopping the adjustment when each electrolytic cell is adjusted to the corresponding second target load.

7. An electrolysis cell control device for use in a method as claimed in any one of claims 1-6, characterised in that, The method comprises the following steps: monitoring the running conditions of each electrolytic cell during the operation of the parallel electrolytic cells; a decreasing module, configured to gradually decrease the load of a target electrolytic cell and gradually increase the load of other electrolytic cells except the target electrolytic cell when it is detected that the target electrolytic cell needs to be taken out of operation, wherein the total increasing speed of the load of other electrolytic cells is equal to the decreasing speed of the load of the target electrolytic cell; a taking-out module, configured to control the target electrolytic cell to be taken out of operation when the load of the target electrolytic cell decreases to 0.

8. An electrolytic cell control system characterized by, comprise: at least one processor; and a memory connected with the at least one processor in communication; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to implement the electrolytic cell control method according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor corresponding to the electrolytic cell control system, the electrolytic cell control system can implement the electrolytic cell control method according to any one of claims 1-6.

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