Control method and device of carbon capture system and electronic equipment

Abstract

The invention relates to a control method and device of a carbon capture system and electronic equipment. The method comprises the steps that the working state and the liquid holding load of the carbon capture system are obtained; and according to the working state of the carbon capture system and the liquid holding load, performing liquid supplementing control on the carbon capture system. By adopting the method disclosed by the invention, the liquid supplementing control can be performed on the carbon capture system according to the working state of the carbon capture system and the liquid holding load, so that the function of automatically supplementing the liquid for the carbon capture system is realized, the manual operation steps are reduced, and the manual operation subjectivity is reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of vacuum coating technology, and in particular to a control method, device and electronic equipment for a carbon capture system. Background Art

[0002] In the existing chemical absorption carbon capture system, the lean liquid absorbs the carbon dioxide in the raw gas from top to bottom through the absorption tower to form a rich liquid, which is then transported to the regeneration tower by a rich liquid pump for desorption. After heating and desorption, the rich liquid releases carbon dioxide and turns back into lean liquid, which is then transported to the absorption tower by a lean liquid pump for recycling.

[0003] In the actual production process, the need for refilling due to changes in working conditions and operational requirements is inevitable. In related technologies, manual operation is mainly used to refill the system, and key parameters such as the amount of refill are adjusted based on experience. However, different personnel have different control habits, and the start and stop sequence of the equipment and the adjustment process of core parameters are different. This not only easily causes insufficient refilling during the refilling process, affecting the operating performance of subsequent work sections, but also may cause excessive refilling, resulting in waste of absorbent raw materials and unnecessary increase in operating costs. Summary of the invention

[0004] The purpose of the present disclosure is to provide a control method, device, storage medium and electronic device for a carbon capture system to replace manual refilling operation of the carbon capture system.

[0005] The first part of the embodiment of the present disclosure provides a control method of a carbon capture system, the method comprising: Obtaining the working state and liquid holding load of the carbon capture system; The carbon capture system is controlled to replenish liquid according to the working state of the carbon capture system and the liquid holding load.

[0006] Optionally, obtaining the working state and liquid holding load of the carbon capture system includes: determining the working state of the carbon capture system according to the working state of a target pump device in the carbon capture system; The liquid holding load of the carbon capture system is determined according to the liquid level of the target tower equipment in the carbon capture system.

[0007] Optionally, the carbon capture system comprises an absorption tower, a regeneration tower, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, the rich liquid pipeline is provided with a rich liquid pump, and the lean liquid pipeline is provided with a lean liquid pump; Determining the working state of the carbon capture system according to the working state of the target pump device in the carbon capture system includes: When the working states of the rich liquid pump and the lean liquid pump are both in the running state, determining that the working state of the carbon capture system is the running state; When the operating state of any one of the rich liquid pump and the lean liquid pump is in the shutdown state, it is determined that the operating state of the carbon capture system is in the shutdown state.

[0008] Optionally, the carbon capture system comprises an absorption tower, a regeneration tower, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, the rich liquid pipeline is provided with a rich liquid pump, and the lean liquid pipeline is provided with a lean liquid pump; The step of determining the liquid holding load of the carbon capture system according to the liquid level of the target tower equipment in the carbon capture system comprises: When the liquid level of the absorption tower is less than or equal to a first liquid level threshold, and / or the liquid level of the regeneration tower is less than or equal to a second liquid level threshold, determining that the liquid holding load of the carbon capture system is in an empty state; When the liquid level of the absorption tower is greater than the first liquid level threshold and less than or equal to the third liquid level threshold, and the liquid level of the regeneration tower is greater than the second liquid level threshold and less than the fourth liquid level threshold, it is determined that the liquid holding load of the carbon capture system is in an underload state.

[0009] Optionally, the method further comprises: When at least two of the following conditions are met, the working state of the lean liquid pump is determined to be the running state: The closing state of the lean liquid pump is yes, the opening state of the lean liquid pump is no, or the current of the lean liquid pump is greater than or equal to a first current threshold; When at least two of the following conditions are met, the working state of the rich liquid pump is determined to be the running state: The closing state of the rich liquid pump is yes, the opening state of the rich liquid pump is no, or the current of the rich liquid pump is greater than or equal to a second current threshold.

[0010] Optionally, the carbon capture system comprises an absorption tower, a regeneration tower, a solution storage tank, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, a replenishment pipeline arranged between the regeneration tower and the solution storage tank, a rich liquid pump and a rich liquid flow regulating valve are arranged on the rich liquid pipeline, a lean liquid pump and a lean liquid flow regulating valve are arranged on the lean liquid pipeline, and a solution delivery pump, a delivery flow regulating valve and a solution storage tank outlet shut-off valve are arranged on the replenishment pipeline; The controlling of liquid replenishment of the carbon capture system according to the working state of the carbon capture system and the liquid holding load comprises: When the carbon capture system is in a shutdown state and the liquid holding load is in an unloaded state, the solution delivery pump is controlled to start and the delivery flow regulating valve is controlled to be fully opened, so as to deliver the solution in the solution storage tank to the regeneration tower through the liquid replenishment pipeline; When it is determined that the liquid level of the regeneration tower is greater than or equal to a fifth liquid level threshold, controlling the lean liquid pump to start and controlling the lean liquid flow regulating valve to open at a first opening, so as to transport the solution in the regeneration tower to the absorption tower through the lean liquid pipeline; When it is determined that the liquid level of the absorption tower is greater than or equal to a sixth liquid level threshold, controlling the rich liquid pump to start and controlling the rich liquid flow regulating valve to open at a second opening, so as to transport the solution in the absorption tower to the regeneration tower through the rich liquid pipeline; When it is determined that the liquid level of the absorption tower reaches the seventh liquid level threshold and is stable for the first preset time, and when it is determined that the liquid level of the regeneration tower reaches the eighth liquid level threshold and is stable for the first preset time, the solution delivery pump is controlled to be closed, the delivery flow regulating valve is controlled to be fully closed, and the solution storage tank outlet shut-off valve is controlled to be closed.

[0011] Optionally, the carbon capture system comprises an absorption tower, a regeneration tower, a solution storage tank, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, a liquid replenishment pipeline arranged between the regeneration tower and the solution storage tank, a rich liquid pump and a rich liquid flow regulating valve are arranged on the rich liquid pipeline, a lean liquid pump and a lean liquid flow regulating valve are arranged on the lean liquid pipeline, and a solution delivery pump, a delivery flow regulating valve and a solution storage tank outlet shut-off valve are arranged on the liquid replenishment pipeline; The controlling of liquid replenishment of the carbon capture system according to the working state of the carbon capture system and the liquid holding load comprises: When the working state of the carbon capture system is a shutdown state and the liquid holding load is an underload state, controlling the solution delivery pump to start and controlling the delivery flow regulating valve to be fully opened, so as to deliver the solution in the solution storage tank to the regeneration tower through the liquid replenishment pipeline; When it is determined that the liquid level of the regeneration tower is greater than or equal to a ninth liquid level threshold, controlling the lean liquid pump to start and controlling the lean liquid flow regulating valve to open at a third opening, so as to transport the solution in the regeneration tower to the absorption tower through the lean liquid pipeline; When it is determined that the liquid level of the absorption tower is greater than or equal to a tenth liquid level threshold, controlling the rich liquid pump to start and controlling the rich liquid flow regulating valve to open at a fourth opening, so as to transport the solution in the absorption tower to the regeneration tower through the rich liquid pipeline; When it is determined that the liquid level of the absorption tower reaches the eleventh liquid level threshold and is stable for the first preset time, and when it is determined that the liquid level of the regeneration tower reaches the twelfth liquid level threshold and is stable for the first preset time, the solution delivery pump is controlled to be closed, the delivery flow regulating valve is controlled to be fully closed, and the solution storage tank outlet shut-off valve is controlled to be closed.

[0012] Optionally, the carbon capture system comprises an absorption tower, a regeneration tower, a solution storage tank, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, a liquid replenishment pipeline arranged between the regeneration tower and the solution storage tank, a rich liquid pump and a rich liquid flow regulating valve are arranged on the rich liquid pipeline, a lean liquid pump and a lean liquid flow regulating valve are arranged on the lean liquid pipeline, and a solution delivery pump, a delivery flow regulating valve and a solution storage tank outlet shut-off valve are arranged on the liquid replenishment pipeline; The controlling of liquid replenishment of the carbon capture system according to the working state of the carbon capture system and the liquid holding load comprises: When the working state of the carbon capture system is the running state and the liquid holding load is the underload state, controlling the solution delivery pump to start and controlling the delivery flow regulating valve to open at a fifth opening degree, so as to deliver the solution in the solution storage tank to the regeneration tower through the liquid replenishment pipeline; Controlling the opening of the lean liquid flow regulating valve to increase so that the flow of the lean liquid pipeline is equal to the sum of the flow of the rich liquid pipeline and the flow of the replenishing liquid pipeline, and stabilizing for a second preset time; When it is determined that the liquid level of the absorption tower reaches the thirteenth liquid level threshold and is stable for the first preset time, and when it is determined that the liquid level of the regeneration tower reaches the fourteenth liquid level threshold and is stable for the first preset time, the solution delivery pump is controlled to be closed, the delivery flow regulating valve is controlled to be fully closed, and the solution storage tank outlet shut-off valve is controlled to be closed.

[0013] The second part of the embodiment of the present disclosure provides a control device for a carbon capture system, the device comprising: An acquisition module, used for acquiring the working state and liquid holding load of the carbon capture system; A control module is used to control the liquid replenishment of the carbon capture system according to the working state of the carbon capture system and the liquid holding load.

[0014] The third part of the embodiments of the present disclosure provides a non-temporary computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any one of the methods described in the first aspect.

[0015] The fourth part of the embodiments of the present disclosure provides an electronic device, including: a memory having a computer program stored thereon; A processor is used to execute the computer program in the memory to implement the steps of any one of the methods in the first aspect.

[0016] By adopting the above technical solution, at least the following beneficial technical effects can be achieved: After the working state and the liquid holding load of the carbon capture system are acquired, the carbon capture system can be refilled with liquid according to the working state and the liquid holding load, so as to realize the function of automatic refilling of the carbon capture system, reduce the manual operation steps and reduce the subjectivity of manual operation.

[0017] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 is a structural schematic diagram of a carbon capture system according to an exemplary embodiment of the present disclosure; Figure 2 is a flow chart of a control method of a carbon capture system according to an exemplary embodiment of the present disclosure; Figure 3 is a block diagram of a control device for a carbon capture system according to an exemplary embodiment of the present disclosure; Figure 4 It is a block diagram of an electronic device according to an exemplary embodiment of the present disclosure.

[0019] Description of reference numerals: 10-absorption tower, 20-regeneration tower, 30-solution storage tank, 40-heat exchanger, 1-rich liquid pump, 2-lean liquid pump, 3-solution delivery pump. DETAILED DESCRIPTION

[0020] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0021] Next, combine Figure 1 The carbon capture system involved in the embodiment of the present disclosure is described. Figure 1As shown, in some embodiments, the carbon capture system includes an absorption tower 10, a regeneration tower 20, a solution storage tank 30, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, and a replenishment pipeline arranged between the regeneration tower and the solution storage tank, the rich liquid pipeline is provided with a rich liquid pump 1 and a rich liquid flow regulating valve FV2, the lean liquid pipeline is provided with a lean liquid pump 2 and a lean liquid flow regulating valve FV1, and the replenishment pipeline is provided with a solution delivery pump 3, a delivery flow regulating valve FV3 and a solution storage tank outlet shut-off valve MV1.

[0022] Continue as Figure 1 As shown, in some embodiments, the rich liquid pipeline and the lean liquid pipeline may exchange heat via a heat exchanger 40 .

[0023] In some embodiments, a liquid level transmitter for detecting the liquid level of the absorption tower is provided in the absorption tower. Optionally, the number of liquid level transmitters in the absorption tower is three to improve the accuracy of liquid level detection. Figure 1 As shown, the three liquid level transmitters are represented as LT1, LT2, and LT3, that is, Figure 1 LT1 / 2 / 3 shown in.

[0024] In some embodiments, a liquid level transmitter for detecting the liquid level of the regeneration tower is provided in the regeneration tower. Optionally, the number of liquid level transmitters in the regeneration tower is three to improve the accuracy of liquid level detection. Figure 1 As shown, the three level transmitters are represented as LT4, LT5, and LT6, that is, Figure 1 LT4 / 5 / 6 shown.

[0025] Continue as Figure 1 As shown, in some embodiments, a flow transmitter FIT1 is further provided on the lean liquid pipeline, a flow transmitter FIT2 is further provided on the rich liquid pipeline, and a flow transmitter FIT3 is further provided on the replenishment liquid pipeline.

[0026] Reference below Figure 1 as well as Figure 2 , a control method of the carbon capture system according to an embodiment of the present disclosure is described.

[0027] Figure 2 is a flow chart of a control method of a carbon capture system according to an exemplary embodiment. The method can be applied to a controller connected to the carbon capture system to control some equipment in the carbon capture system, such as Figure 2 As shown, the control method of the carbon capture system may include the following steps: S201, obtaining the working status and liquid holding load of the carbon capture system.

[0028] S202, controlling the liquid replenishment of the carbon capture system according to the working state of the carbon capture system and the liquid holding load.

[0029] By adopting the above method, after the working state and the liquid holding load of the carbon capture system are acquired, the carbon capture system can be refilled with liquid according to the working state and the liquid holding load of the carbon capture system, so as to realize the function of automatic refilling of the carbon capture system, reduce the manual operation steps and reduce the subjectivity of manual operation.

[0030] Combination Figure 1 The structural schematic diagram of the carbon capture system shown in FIG. 1 shows, in some embodiments, the carbon capture system may include a pump device and a tower device. In this case, in step S201, obtaining the working state and liquid holding load of the carbon capture system may include the following steps: determining the working state of the carbon capture system according to the working state of a target pump device in the carbon capture system; The liquid holding load of the carbon capture system is determined according to the liquid level of the target tower equipment in the carbon capture system.

[0031] In the embodiments of the present disclosure, the working state of the carbon capture system can be determined according to the working state of a target pump device in the carbon capture system, and the liquid holding load of the carbon capture system can be determined according to the liquid level of a target tower device in the carbon capture system.

[0032] Combination Figure 1 The structural schematic diagram of the carbon capture system shown in the figure, in some embodiments, the carbon capture system includes an absorption tower, a regeneration tower, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, the rich liquid pipeline is provided with a rich liquid pump, and the lean liquid pipeline is provided with a lean liquid pump. In this case, determining the working state of the carbon capture system according to the working state of the target pump device in the carbon capture system may include the steps of: When the working states of the rich liquid pump and the lean liquid pump are both in the running state, determining that the working state of the carbon capture system is the running state; When the operating state of any one of the rich liquid pump and the lean liquid pump is in the shutdown state, it is determined that the operating state of the carbon capture system is in the shutdown state.

[0033] In the embodiment of the present disclosure, when the working states of the rich liquid pump and the lean liquid pump are both in the running state, it means that the solution in the carbon capture system is in normal circulation, and therefore, it can be determined that the working state of the carbon capture system is in the running state. When the working state of either the rich liquid pump or the lean liquid pump is in the shutdown state, it means that the solution in the carbon capture system is not in normal circulation, and therefore, it can be determined that the working state of the carbon capture system is in the shutdown state.

[0034] In some embodiments, in combination Figure 1 The structural diagram shown in FIG. 1 can determine that the working state of the lean liquid pump is the running state when at least two of the following conditions are met: The closed state of the lean liquid pump is yes, the open state of the lean liquid pump is no, or the current of the lean liquid pump is greater than or equal to a first current threshold.

[0035] In the embodiment of the present disclosure, by setting at least any two of the above three conditions to be met and then determining that the working state of the lean liquid pump is the running state, the accuracy of determining the working state of the lean liquid pump can be improved.

[0036] In some embodiments, in combination Figure 1 The structural diagram shown in FIG. 1 can determine that the working state of the rich liquid pump is the running state when at least two of the following conditions are met: The closing state of the rich liquid pump is yes, the opening state of the rich liquid pump is no, or the current of the rich liquid pump is greater than or equal to a second current threshold.

[0037] In the embodiment of the present disclosure, by setting at least any two of the above three conditions to be met and then determining that the working state of the rich liquid pump is the running state, the accuracy of determining the working state of the rich liquid pump can be improved.

[0038] It should be noted that the first current threshold and the second current threshold are determined according to actual working conditions.

[0039] Combination Figure 1 The structural schematic diagram of the carbon capture system shown in the figure, in some embodiments, the carbon capture system includes an absorption tower, a regeneration tower, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, the rich liquid pipeline is provided with a rich liquid pump, and the lean liquid pipeline is provided with a lean liquid pump. In this case, determining the liquid holding load of the carbon capture system according to the liquid level of the target tower equipment in the carbon capture system may include the steps of: When the liquid level of the absorption tower is less than or equal to a first liquid level threshold, and / or the liquid level of the regeneration tower is less than or equal to a second liquid level threshold, determining that the liquid holding load of the carbon capture system is in an empty state; When the liquid level of the absorption tower is greater than the first liquid level threshold and less than or equal to the third liquid level threshold, and the liquid level of the regeneration tower is greater than the second liquid level threshold and less than the fourth liquid level threshold, it is determined that the liquid holding load of the carbon capture system is in an underload state.

[0040] The first liquid level threshold can be regarded as a threshold for judging the no-load state of the absorption tower, and the second liquid level threshold can be regarded as a threshold for judging the no-load state of the regeneration tower. In the disclosed embodiment, when either the absorption tower or the regeneration tower satisfies the judgment that it is in the no-load state, the liquid holding load of the carbon capture system can be determined to be in the no-load state.

[0041] Among them, the third liquid level threshold can be regarded as the threshold for judging the underload state of the absorption tower. When the liquid level of the absorption tower is greater than the first liquid level threshold and less than or equal to the third liquid level threshold, it can be determined that the absorption tower satisfies the judgment that it is in an underload state. The fourth liquid level threshold can be regarded as the threshold for judging the no-load state of the regeneration tower. When the liquid level of the regeneration tower is greater than the second liquid level threshold and less than or equal to the fourth liquid level threshold, it can be determined that the regeneration tower satisfies the judgment that it is in an underload state. In the embodiment of the present disclosure, the liquid holding load of the carbon capture system is determined to be underloaded only when both the absorption tower and the regeneration tower meet the judgment that they are in an underload state.

[0042] In some embodiments, in combination Figure 1 As shown in the structural diagram, the three liquid level transmitters in the absorption tower can be used to jointly judge the liquid level of the absorption tower and the corresponding liquid level threshold.

[0043] For example, when the liquid levels displayed by at least two liquid level transmitters in the absorption tower are less than or equal to the first liquid level threshold, it is determined that the liquid level of the absorption tower is less than or equal to the first liquid level threshold.

[0044] For another example, when the liquid levels displayed by at least two liquid level transmitters in the absorption tower are greater than the first liquid level threshold and less than or equal to the third liquid level threshold, it is determined that the liquid level of the absorption tower is greater than the first liquid level threshold and less than or equal to the third liquid level threshold.

[0045] Similarly, in some embodiments, the three liquid level transmitters in the regeneration tower can be used to jointly determine the liquid level of the regeneration tower and the corresponding liquid level threshold. No further examples are given here.

[0046] Combination Figure 1The structural schematic diagram of the carbon capture system shown in the figure, in some embodiments, the carbon capture system includes an absorption tower, a regeneration tower, a solution storage tank, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, a liquid replenishment pipeline arranged between the regeneration tower and the solution storage tank, a rich liquid pump and a rich liquid flow regulating valve are arranged on the rich liquid pipeline, a lean liquid pump and a lean liquid flow regulating valve are arranged on the lean liquid pipeline, a solution delivery pump, a delivery flow regulating valve and a solution storage tank outlet shut-off valve are arranged on the liquid replenishment pipeline, in this case, the liquid replenishment control of the carbon capture system according to the working state of the carbon capture system and the liquid holding load may include the steps of: When the carbon capture system is in a shutdown state and the liquid holding load is in an unloaded state, the solution delivery pump is controlled to start and the delivery flow regulating valve is controlled to be fully opened, so as to deliver the solution in the solution storage tank to the regeneration tower through the liquid replenishment pipeline; When it is determined that the liquid level of the regeneration tower is greater than or equal to a fifth liquid level threshold, controlling the lean liquid pump to start and controlling the lean liquid flow regulating valve to open at a first opening, so as to transport the solution in the regeneration tower to the absorption tower through the lean liquid pipeline; When it is determined that the liquid level of the absorption tower is greater than or equal to a sixth liquid level threshold, controlling the rich liquid pump to start and controlling the rich liquid flow regulating valve to open at a second opening, so as to transport the solution in the absorption tower to the regeneration tower through the rich liquid pipeline; When it is determined that the liquid level of the absorption tower reaches the seventh liquid level threshold and is stable for the first preset time, and when it is determined that the liquid level of the regeneration tower reaches the eighth liquid level threshold and is stable for the first preset time, the solution delivery pump is controlled to be closed, the delivery flow regulating valve is controlled to be fully closed, and the solution storage tank outlet shut-off valve is controlled to be closed.

[0047] In the embodiment of the present disclosure, when the working state of the carbon capture system is the shutdown state and the liquid holding load is the no-load state, the solution delivery pump can be started first, and the solution storage tank can be used to replenish the regeneration tower with liquid, and the flow control valve opening instruction on the liquid replenishment pipeline is set to 100%. When the liquid level of the regeneration tower is greater than or equal to the fifth liquid level threshold, it is determined that the pre-liquid holding amount of the no-load start of the regeneration tower is satisfied. Then, the lean liquid pump is controlled to start and the lean liquid flow control valve is controlled to open with the first opening, and the regeneration tower is used to replenish the liquid into the absorption tower. When the liquid level of the absorption tower is greater than or equal to the fifth liquid level threshold, the lean liquid pump is controlled to start and the lean liquid flow control valve is controlled to open with the first opening, and the absorption tower is replenished with liquid. In the case of the sixth liquid level threshold, it is determined that the pre-liquid holding volume for no-load startup of the absorption tower is met, and then the rich liquid pump is controlled to start and the rich liquid flow regulating valve is controlled to open with a second opening, so as to transport the solution in the absorption tower to the regeneration tower through the rich liquid pipeline. When the liquid level of the absorption tower reaches the seventh liquid level threshold and is stable for the first preset time, and it is determined that the liquid level of the regeneration tower reaches the eighth liquid level threshold and is stable for the first preset time, the solution delivery pump is stopped, the flow regulating valve opening instruction on the liquid replenishment pipeline is 0%, and the solution storage tank outlet shut-off valve is closed.

[0048] In some embodiments, when it is determined that the liquid level of the absorption tower reaches the range of plus or minus 5% of the seventh liquid level threshold and is stable for the first preset time (for example, 3 minutes), and when it is determined that the liquid level of the regeneration tower reaches the range of plus or minus 5% of the eighth liquid level threshold and is stable for the first preset time, the liquid replenishment is completed, the solution delivery pump is controlled to be closed, the delivery flow regulating valve is controlled to be fully closed, and the solution storage tank outlet shut-off valve is controlled to be closed.

[0049] In some embodiments, after closing the shut-off valve at the outlet of the solution storage tank, the absorption regeneration system can be put into automatic adjustment of the solution circulation volume.

[0050] In some embodiments, when the solution circulation volume of the absorption regeneration system is automatically adjusted, in order to ensure that the liquid levels of the absorption tower and the regeneration tower in the absorption regeneration system are stable and the system state is stable, it is necessary to automatically adjust the lean liquid flow regulating valve and the rich liquid flow regulating valve to keep the flow values ​​on the two pipelines constant. For example, by adjusting the lean liquid flow regulating valve and the rich liquid flow regulating valve, the flow rates on the two pipelines are set to be the same, wherein the specific flow setting value is determined according to the actual public conditions.

[0051] Combination Figure 1The structural schematic diagram of the carbon capture system shown in the figure, in some embodiments, the carbon capture system includes an absorption tower, a regeneration tower, a solution storage tank, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, a liquid replenishment pipeline arranged between the regeneration tower and the solution storage tank, a rich liquid pump and a rich liquid flow regulating valve are arranged on the rich liquid pipeline, a lean liquid pump and a lean liquid flow regulating valve are arranged on the lean liquid pipeline, a solution delivery pump, a delivery flow regulating valve and a solution storage tank outlet shut-off valve are arranged on the liquid replenishment pipeline, in this case, the liquid replenishment control of the carbon capture system according to the working state of the carbon capture system and the liquid holding load may include the steps of: When the working state of the carbon capture system is a shutdown state and the liquid holding load is an underload state, controlling the solution delivery pump to start and controlling the delivery flow regulating valve to be fully opened, so as to deliver the solution in the solution storage tank to the regeneration tower through the liquid replenishment pipeline; When it is determined that the liquid level of the regeneration tower is greater than or equal to a ninth liquid level threshold, controlling the lean liquid pump to start and controlling the lean liquid flow regulating valve to open at a third opening, so as to transport the solution in the regeneration tower to the absorption tower through the lean liquid pipeline; When it is determined that the liquid level of the absorption tower is greater than or equal to a tenth liquid level threshold, controlling the rich liquid pump to start and controlling the rich liquid flow regulating valve to open at a fourth opening, so as to transport the solution in the absorption tower to the regeneration tower through the rich liquid pipeline; When it is determined that the liquid level of the absorption tower reaches the eleventh liquid level threshold and is stable for the first preset time, and when it is determined that the liquid level of the regeneration tower reaches the twelfth liquid level threshold and is stable for the first preset time, the solution delivery pump is controlled to be closed, the delivery flow regulating valve is controlled to be fully closed, and the solution storage tank outlet shut-off valve is controlled to be closed.

[0052] In the embodiment of the present disclosure, when the working state of the carbon capture system is the shutdown state and the liquid holding load is the underload state, the solution delivery pump can be started first, and the solution storage tank can be used to replenish the liquid into the regeneration tower, and the flow control valve opening instruction on the replenishment pipeline is set to 100%. When the liquid level of the regeneration tower is greater than or equal to the ninth liquid level threshold, it is determined that the regeneration tower is underloaded and the pre-liquid holding volume is satisfied. Then, the lean liquid pump is controlled to start and the lean liquid flow control valve is controlled to open with a third opening, and the regeneration tower is used to replenish the liquid into the absorption tower. When the liquid level of the absorption tower is greater than or equal to the tenth liquid level threshold, the lean liquid pump is controlled to start and the lean liquid flow control valve is controlled to open with a third opening. When the liquid level of the absorption tower reaches the eleventh liquid level threshold and is stable for the first preset time, and when it is determined that the liquid level of the regeneration tower reaches the twelfth liquid level threshold and is stable for the first preset time, the liquid replenishment is completed, the solution delivery pump is stopped, the flow regulating valve opening instruction on the liquid replenishment pipeline is 0%, and the solution storage tank outlet shut-off valve is closed.

[0053] In some embodiments, when it is determined that the liquid level of the absorption tower reaches the range of plus or minus 5% of the eleventh liquid level threshold and is stable for a first preset time (for example, 3 minutes), and when it is determined that the liquid level of the regeneration tower reaches the range of plus or minus 5% of the twelfth liquid level threshold and is stable for the first preset time, the solution delivery pump can be controlled to be closed, the delivery flow regulating valve can be controlled to be fully closed, and the solution storage tank outlet shut-off valve can be controlled to be closed.

[0054] In some embodiments, after closing the shut-off valve at the outlet of the solution storage tank, the absorption regeneration system can be put into automatic adjustment of the solution circulation volume.

[0055] Combination Figure 1 The structural schematic diagram of the carbon capture system shown in the figure, in some embodiments, the carbon capture system includes an absorption tower, a regeneration tower, a solution storage tank, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, a liquid replenishment pipeline arranged between the regeneration tower and the solution storage tank, a rich liquid pump and a rich liquid flow regulating valve are arranged on the rich liquid pipeline, a lean liquid pump and a lean liquid flow regulating valve are arranged on the lean liquid pipeline, a solution delivery pump, a delivery flow regulating valve and a solution storage tank outlet shut-off valve are arranged on the liquid replenishment pipeline, in this case, the liquid replenishment control of the carbon capture system according to the working state of the carbon capture system and the liquid holding load may include the steps of: When the working state of the carbon capture system is the running state and the liquid holding load is the underload state, controlling the solution delivery pump to start and controlling the delivery flow regulating valve to open at a fifth opening degree, so as to deliver the solution in the solution storage tank to the regeneration tower through the liquid replenishment pipeline; Controlling the opening of the lean liquid flow regulating valve to increase so that the flow of the lean liquid pipeline is equal to the sum of the flow of the rich liquid pipeline and the flow of the replenishing liquid pipeline, and stabilizing for a second preset time; When it is determined that the liquid level of the absorption tower reaches the thirteenth liquid level threshold and is stable for the first preset time, and when it is determined that the liquid level of the regeneration tower reaches the fourteenth liquid level threshold and is stable for the first preset time, the solution delivery pump is controlled to be closed, the delivery flow regulating valve is controlled to be fully closed, and the solution storage tank outlet shut-off valve is controlled to be closed.

[0056] In the embodiment of the present disclosure, when the working state of the carbon capture system is the operating state and the liquid holding load is the underload state, the solution delivery pump can be started first to replenish liquid into the regeneration tower from the solution storage tank, and the flow regulating valve on the replenishment pipeline is set to open at the fifth opening, and the opening of the lean liquid flow regulating valve is controlled to increase so that the flow of the lean liquid pipeline is equal to the sum of the flow of the rich liquid pipeline and the flow of the replenishment pipeline, and stabilizes for a second preset time. When the liquid level of the absorption tower reaches the thirteenth liquid level threshold and stabilizes for the first preset time, and when it is determined that the liquid level of the regeneration tower reaches the fourteenth liquid level threshold and stabilizes for the first preset time, the replenishment is completed, the solution delivery pump is stopped, the flow regulating valve opening instruction on the replenishment pipeline is 0%, and the solution storage tank outlet shut-off valve is closed.

[0057] In some embodiments, the opening of the lean liquid flow regulating valve can be controlled to increase so that the flow of the lean liquid pipeline is equal to the sum of the flow of the rich liquid pipeline and the flow of the replenishing liquid pipeline within a range of plus or minus 5%, and is stabilized for a second preset time (e.g., 1 minute).

[0058] In some embodiments, when it is determined that the liquid level of the absorption tower reaches the range of plus or minus 5% of the thirteenth liquid level threshold and is stable for a first preset time (for example, 3 minutes), and when it is determined that the liquid level of the regeneration tower reaches the range of plus or minus 5% of the fourteenth liquid level threshold and is stable for the first preset time, the solution delivery pump can be controlled to be closed, the delivery flow regulating valve can be controlled to be fully closed, and the solution storage tank outlet shut-off valve can be controlled to be closed.

[0059] In some embodiments, after closing the shut-off valve at the outlet of the solution storage tank, the absorption regeneration system can be put into automatic adjustment of the solution circulation volume.

[0060] It should be noted that the first to fourteenth liquid level thresholds mentioned in the above embodiments are determined according to actual working conditions. The first to fifth opening degrees are determined according to actual working conditions.

[0061] By adopting the control method of the carbon capture system of the embodiment of the present disclosure, it is possible to automatically determine whether the liquid holding capacity in the system is sufficient at the beginning of the startup or during the operation of the entire carbon capture system, and automatically replenish the system during this stage to stabilize the liquid holding capacity of the absorption and regeneration system. This can not only realize the automatic operation of the carbon capture system replenishment process, increase the adaptability to changing boundary conditions, and enhance the precise adjustment performance of key system parameters, but also significantly improve the automation level of the entire device, reduce personnel input, and lay the foundation for the less-manned operation of the carbon capture device.

[0062] Based on the same concept, the present disclosure also provides a control device for a carbon capture system, which can be part or all of an electronic device through software, hardware, or a combination of both. Figure 3 , the control device 300 of the carbon capture system may include: An acquisition module 310 is used to acquire the working state and liquid holding load of the carbon capture system; The control module 320 is used to control the liquid replenishment of the carbon capture system according to the working state of the carbon capture system and the liquid holding load.

[0063] Optionally, the acquisition module 310 includes: A first determination submodule, configured to determine the working state of the carbon capture system according to the working state of a target pump device in the carbon capture system; The second determination submodule is configured to determine the liquid holding load of the carbon capture system according to the liquid level of a target tower device in the carbon capture system.

[0064] Optionally, the carbon capture system includes an absorption tower, a regeneration tower, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, the rich liquid pipeline is provided with a rich liquid pump, and the lean liquid pipeline is provided with a lean liquid pump; accordingly, the first determination submodule is further used to determine that the working state of the carbon capture system is an operating state when the working states of the rich liquid pump and the lean liquid pump are both in an operating state; and to determine that the working state of the carbon capture system is a shutdown state when the working state of either the rich liquid pump or the lean liquid pump is in a shutdown state.

[0065] Optionally, the carbon capture system includes an absorption tower, a regeneration tower, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, the rich liquid pipeline is provided with a rich liquid pump, and the lean liquid pipeline is provided with a lean liquid pump; accordingly, the second determination submodule is also used to determine that the liquid holding load of the carbon capture system is in a no-load state when the liquid level of the absorption tower is less than or equal to a first liquid level threshold, and / or the liquid level of the regeneration tower is less than or equal to a second liquid level threshold; when the liquid level of the absorption tower is greater than the first liquid level threshold and less than or equal to a third liquid level threshold, and the liquid level of the regeneration tower is greater than the second liquid level threshold and less than a fourth liquid level threshold, determine that the liquid holding load of the carbon capture system is in an underload state.

[0066] Optionally, the control device 300 of the carbon capture system further includes: A determination module is used to determine that the working state of the lean liquid pump is the running state when at least two of the following conditions are met: The closed state of the lean liquid pump is yes, the open state of the lean liquid pump is no, or the current of the lean liquid pump is greater than or equal to a first current threshold; When at least two of the following conditions are met, the working state of the rich liquid pump is determined to be the running state: The closing state of the rich liquid pump is yes, the opening state of the rich liquid pump is no, or the current of the rich liquid pump is greater than or equal to a second current threshold.

[0067] Optionally, the carbon capture system includes an absorption tower, a regeneration tower, a solution storage tank, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, a liquid replenishment pipeline arranged between the regeneration tower and the solution storage tank, a rich liquid pump and a rich liquid flow regulating valve are arranged on the rich liquid pipeline, a lean liquid pump and a lean liquid flow regulating valve are arranged on the lean liquid pipeline, and a solution delivery pump, a delivery flow regulating valve and a solution storage tank outlet shut-off valve are arranged on the liquid replenishment pipeline; accordingly, the control module 320 is also used for: when the working state of the carbon capture system is a shutdown state and the liquid holding load is a no-load state, controlling the solution delivery pump to start and controlling the delivery flow regulating valve to fully open, so as to deliver the solution in the solution storage tank to the regeneration tower through the liquid replenishment pipeline; after determining that When the liquid level of the regeneration tower is greater than or equal to the fifth liquid level threshold, the lean liquid pump is controlled to start and the lean liquid flow regulating valve is controlled to open with a first opening, so as to transport the solution in the regeneration tower to the absorption tower through the lean liquid pipeline; when it is determined that the liquid level of the absorption tower is greater than or equal to the sixth liquid level threshold, the rich liquid pump is controlled to start and the rich liquid flow regulating valve is controlled to open with a second opening, so as to transport the solution in the absorption tower to the regeneration tower through the rich liquid pipeline; when it is determined that the liquid level of the absorption tower reaches the seventh liquid level threshold and is stable for a first preset time, and when it is determined that the liquid level of the regeneration tower reaches the eighth liquid level threshold and is stable for the first preset time, the solution delivery pump is controlled to be closed, the delivery flow regulating valve is controlled to be fully closed, and the solution storage tank outlet shut-off valve is controlled to be closed.

[0068] Optionally, the carbon capture system includes an absorption tower, a regeneration tower, a solution storage tank, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, a liquid replenishment pipeline arranged between the regeneration tower and the solution storage tank, a rich liquid pump and a rich liquid flow regulating valve are arranged on the rich liquid pipeline, a lean liquid pump and a lean liquid flow regulating valve are arranged on the lean liquid pipeline, and a solution delivery pump, a delivery flow regulating valve and a solution storage tank outlet shut-off valve are arranged on the liquid replenishment pipeline; accordingly, the control module 320 is also used for: when the working state of the carbon capture system is a shutdown state and the liquid holding load is an underload state, controlling the solution delivery pump to start and controlling the delivery flow regulating valve to fully open, so as to deliver the solution in the solution storage tank to the regeneration tower through the liquid replenishment pipeline; after determining that the regeneration When the liquid level of the regeneration tower is greater than or equal to the ninth liquid level threshold, the lean liquid pump is controlled to start and the lean liquid flow regulating valve is controlled to open with a third opening, so as to transport the solution in the regeneration tower to the absorption tower through the lean liquid pipeline; when it is determined that the liquid level of the absorption tower is greater than or equal to the tenth liquid level threshold, the rich liquid pump is controlled to start and the rich liquid flow regulating valve is controlled to open with a fourth opening, so as to transport the solution in the absorption tower to the regeneration tower through the rich liquid pipeline; when it is determined that the liquid level of the absorption tower reaches the eleventh liquid level threshold and is stable for the first preset time, and when it is determined that the liquid level of the regeneration tower reaches the twelfth liquid level threshold and is stable for the first preset time, the solution delivery pump is controlled to be closed, the delivery flow regulating valve is controlled to be fully closed, and the solution storage tank outlet shut-off valve is controlled to be closed.

[0069] Optionally, the carbon capture system includes an absorption tower, a regeneration tower, a solution storage tank, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, a liquid replenishment pipeline arranged between the regeneration tower and the solution storage tank, a rich liquid pump and a rich liquid flow regulating valve are arranged on the rich liquid pipeline, a lean liquid pump and a lean liquid flow regulating valve are arranged on the lean liquid pipeline, and a solution delivery pump, a delivery flow regulating valve and a solution storage tank outlet shut-off valve are arranged on the liquid replenishment pipeline; accordingly, the control module 320 is also used to: when the working state of the carbon capture system is the running state and the liquid holding load is the underload state, control the solution delivery pump to start and Control the delivery flow regulating valve to open at the fifth opening degree to deliver the solution in the solution storage tank to the regeneration tower through the replenishment pipeline; control the opening degree of the lean liquid flow regulating valve to increase so that the flow of the lean liquid pipeline is equal to the sum of the flow of the rich liquid pipeline and the flow of the replenishment pipeline, and stabilizes for a second preset time; when it is determined that the liquid level of the absorption tower reaches the thirteenth liquid level threshold and stabilizes for a first preset time, and when it is determined that the liquid level of the regeneration tower reaches the fourteenth liquid level threshold and stabilizes for the first preset time, control the solution delivery pump to close, control the delivery flow regulating valve to fully close, and control the solution storage tank outlet shut-off valve to close.

[0070] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0071] Based on the same inventive concept, the present disclosure also provides an electronic device, including: a memory having a computer program stored thereon; A processor is used to execute the computer program in the memory to implement the steps of any of the above-mentioned carbon capture system control methods.

[0072] In a possible manner, the block diagram of the electronic device may be as follows Figure 4 See Figure 4 The electronic device 400 may include: a processor 401 and a memory 402. The electronic device 400 may also include one or more of a multimedia component 403, an input / output (I / O) interface 404, and a communication component 405.

[0073] The processor 401 is used to control the overall operation of the electronic device 400 to complete all or part of the steps in the control method of the carbon capture system described above. The memory 402 is used to store various types of data to support the operation of the electronic device 400, and these data may include, for example, instructions for any application or method used to operate on the electronic device 400, and data related to the application. The memory 402 may 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 memory, flash memory, disk or optical disk. The multimedia component 403 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. The input / output interface 404 provides an interface between the processor 401 and other interface modules, which may be keyboards, mice, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 405 is used for wired or wireless communication between the electronic device 400 and other devices.

[0074] In an exemplary embodiment, the electronic device 400 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned control method of the carbon capture system.

[0075] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the control method of the carbon capture system described above are implemented. For example, the computer-readable storage medium may be the memory 402 including the program instructions, and the program instructions may be executed by the processor 401 of the electronic device 400 to complete the control method of the carbon capture system described above.

[0076] In another exemplary embodiment, a computer program product is also provided. The computer program product includes a computer program executable by a programmable device, and the computer program has a code portion for executing the control method of the carbon capture system described above when executed by the programmable device.

[0077] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0078] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0079] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A method for controlling a carbon capture system, characterized in that: The method comprises: Obtaining the working state and liquid holding load of the carbon capture system; The carbon capture system is controlled to replenish liquid according to the working state of the carbon capture system and the liquid holding load.

2. The method according to claim 1, characterized in that The obtaining of the working state and liquid holding load of the carbon capture system comprises: determining the working state of the carbon capture system according to the working state of a target pump device in the carbon capture system; The liquid holding load of the carbon capture system is determined according to the liquid level of the target tower equipment in the carbon capture system.

3. The method according to claim 2, characterized in that The carbon capture system comprises an absorption tower, a regeneration tower, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, wherein a rich liquid pump is arranged on the rich liquid pipeline, and a lean liquid pump is arranged on the lean liquid pipeline; Determining the working state of the carbon capture system according to the working state of the target pump device in the carbon capture system includes: When the working states of the rich liquid pump and the lean liquid pump are both in the running state, determining that the working state of the carbon capture system is the running state; When the operating state of any one of the rich liquid pump and the lean liquid pump is in the shutdown state, it is determined that the operating state of the carbon capture system is in the shutdown state.

4. The method according to claim 2, characterized in that: The carbon capture system comprises an absorption tower, a regeneration tower, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, wherein a rich liquid pump is arranged on the rich liquid pipeline, and a lean liquid pump is arranged on the lean liquid pipeline; The step of determining the liquid holding load of the carbon capture system according to the liquid level of the target tower equipment in the carbon capture system comprises: When the liquid level of the absorption tower is less than or equal to a first liquid level threshold, and / or the liquid level of the regeneration tower is less than or equal to a second liquid level threshold, determining that the liquid holding load of the carbon capture system is in an empty state; When the liquid level of the absorption tower is greater than the first liquid level threshold and less than or equal to the third liquid level threshold, and the liquid level of the regeneration tower is greater than the second liquid level threshold and less than the fourth liquid level threshold, it is determined that the liquid holding load of the carbon capture system is in an underload state.

5. The method according to claim 3, characterized in that: The method further comprises: When at least two of the following conditions are met, the working state of the lean liquid pump is determined to be the running state: The closed state of the lean liquid pump is yes, the open state of the lean liquid pump is no, or the current of the lean liquid pump is greater than or equal to a first current threshold; When at least two of the following conditions are met, the working state of the rich liquid pump is determined to be the running state: The closing state of the rich liquid pump is yes, the opening state of the rich liquid pump is no, or the current of the rich liquid pump is greater than or equal to a second current threshold.

6. The method according to claim 1, characterized in that The carbon capture system comprises an absorption tower, a regeneration tower, a solution storage tank, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, a replenishment pipeline arranged between the regeneration tower and the solution storage tank, a rich liquid pump and a rich liquid flow regulating valve are arranged on the rich liquid pipeline, a lean liquid pump and a lean liquid flow regulating valve are arranged on the lean liquid pipeline, and a solution delivery pump, a delivery flow regulating valve and a solution storage tank outlet shut-off valve are arranged on the replenishment pipeline; The controlling of liquid replenishment of the carbon capture system according to the working state of the carbon capture system and the liquid holding load comprises: When the carbon capture system is in a shutdown state and the liquid holding load is in an unloaded state, the solution delivery pump is controlled to start and the delivery flow regulating valve is controlled to be fully opened, so as to deliver the solution in the solution storage tank to the regeneration tower through the liquid replenishment pipeline; When it is determined that the liquid level of the regeneration tower is greater than or equal to a fifth liquid level threshold, controlling the lean liquid pump to start and controlling the lean liquid flow regulating valve to open at a first opening, so as to transport the solution in the regeneration tower to the absorption tower through the lean liquid pipeline; When it is determined that the liquid level of the absorption tower is greater than or equal to a sixth liquid level threshold, controlling the rich liquid pump to start and controlling the rich liquid flow regulating valve to open at a second opening, so as to transport the solution in the absorption tower to the regeneration tower through the rich liquid pipeline; When it is determined that the liquid level of the absorption tower reaches the seventh liquid level threshold and is stable for the first preset time, and when it is determined that the liquid level of the regeneration tower reaches the eighth liquid level threshold and is stable for the first preset time, the solution delivery pump is controlled to be closed, the delivery flow regulating valve is controlled to be fully closed, and the solution storage tank outlet shut-off valve is controlled to be closed.

7. The method according to claim 1, characterized in that The carbon capture system comprises an absorption tower, a regeneration tower, a solution storage tank, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, a replenishment pipeline arranged between the regeneration tower and the solution storage tank, a rich liquid pump and a rich liquid flow regulating valve arranged on the rich liquid pipeline, a lean liquid pump and a lean liquid flow regulating valve arranged on the lean liquid pipeline, a solution delivery pump, a delivery flow regulating valve and a solution storage tank outlet shut-off valve arranged on the replenishment pipeline; The controlling of liquid replenishment of the carbon capture system according to the working state of the carbon capture system and the liquid holding load comprises: When the working state of the carbon capture system is a shutdown state and the liquid holding load is an underload state, controlling the solution delivery pump to start and controlling the delivery flow regulating valve to be fully opened, so as to deliver the solution in the solution storage tank to the regeneration tower through the liquid replenishment pipeline; When it is determined that the liquid level of the regeneration tower is greater than or equal to a ninth liquid level threshold, controlling the lean liquid pump to start and controlling the lean liquid flow regulating valve to open at a third opening, so as to transport the solution in the regeneration tower to the absorption tower through the lean liquid pipeline; When it is determined that the liquid level of the absorption tower is greater than or equal to a tenth liquid level threshold, controlling the rich liquid pump to start and controlling the rich liquid flow regulating valve to open at a fourth opening, so as to transport the solution in the absorption tower to the regeneration tower through the rich liquid pipeline; When it is determined that the liquid level of the absorption tower reaches the eleventh liquid level threshold and is stable for the first preset time, and when it is determined that the liquid level of the regeneration tower reaches the twelfth liquid level threshold and is stable for the first preset time, the solution delivery pump is controlled to be closed, the delivery flow regulating valve is controlled to be fully closed, and the solution storage tank outlet shut-off valve is controlled to be closed.

8. The method according to claim 1, characterized in that The carbon capture system comprises an absorption tower, a regeneration tower, a solution storage tank, a rich liquid pipeline and a lean liquid pipeline arranged between the absorption tower and the regeneration tower, a replenishment pipeline arranged between the regeneration tower and the solution storage tank, a rich liquid pump and a rich liquid flow regulating valve arranged on the rich liquid pipeline, a lean liquid pump and a lean liquid flow regulating valve arranged on the lean liquid pipeline, a solution delivery pump, a delivery flow regulating valve and a solution storage tank outlet shut-off valve arranged on the replenishment pipeline; The controlling of liquid replenishment of the carbon capture system according to the working state of the carbon capture system and the liquid holding load comprises: When the working state of the carbon capture system is the running state and the liquid holding load is the underload state, controlling the solution delivery pump to start and controlling the delivery flow regulating valve to open at a fifth opening degree, so as to deliver the solution in the solution storage tank to the regeneration tower through the liquid replenishment pipeline; Controlling the opening of the lean liquid flow regulating valve to increase so that the flow of the lean liquid pipeline is equal to the sum of the flow of the rich liquid pipeline and the flow of the replenishing liquid pipeline, and stabilizing for a second preset time; When it is determined that the liquid level of the absorption tower reaches the thirteenth liquid level threshold and is stable for the first preset time, and when it is determined that the liquid level of the regeneration tower reaches the fourteenth liquid level threshold and is stable for the first preset time, the solution delivery pump is controlled to be closed, the delivery flow regulating valve is controlled to be fully closed, and the solution storage tank outlet shut-off valve is controlled to be closed.

9. A control device for a carbon capture system, characterized in that: The device comprises: An acquisition module, used for acquiring the working state and liquid holding load of the carbon capture system; A control module is used to control the liquid replenishment of the carbon capture system according to the working state of the carbon capture system and the liquid holding load.

10. An electronic device, characterized in that: include: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1 to 8.

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