Desulfurization system control method and device, electronic device, and storage medium

Abstract

The application discloses a desulfurization system control method and device, electronic equipment and storage medium, relates to the technical field of desulfurization, and comprises the following steps: acquiring an actual pressure and a target pressure, wherein the actual pressure is a desulfurization system inlet pressure, and the target pressure is determined according to actual coal gas consumption and a flue damper opening degree; determining a pressure deviation value according to a difference between the target pressure and the actual pressure; and adjusting the frequency of a fan frequency converter based on the pressure deviation value, so that the actual pressure approaches the target pressure. The application can adjust the frequency of the fan frequency converter according to the difference between the actual pressure and the target pressure, thereby being capable of adjusting the negative pressure generated by the fan in real time according to the change of the heating furnace hearth pressure, and then guaranteeing the stability of the heating furnace hearth pressure.

Description

Technical Field

[0001] This application relates to the field of desulfurization technology, and in particular to a desulfurization system control method and apparatus, electronic equipment, and storage medium. Background Technology

[0002] Currently, in the metallurgical industry, the combustion of sulfur dioxide in heating furnaces for slabs produces large amounts of sulfur dioxide. Excessive sulfur dioxide levels severely harm the natural environment, thus necessitating the installation of flue gas desulfurization systems in these furnaces. The flue gas generated by the furnace is desulfurized by the desulfurization system before being discharged into the atmosphere through a chimney. However, because the application of desulfurization technology in heating furnaces is a relatively new process, there are no mature control methods. This results in unstable flue gas flow patterns within the furnace, making it impossible to guarantee stable pressure inside the furnace chamber. Summary of the Invention

[0003] This application provides a desulfurization system control method and apparatus, electronic equipment, and storage medium, which can control the flue gas desulfurization system configured in the heating furnace to ensure the stability of the pressure inside the furnace.

[0004] A first aspect of this application provides a desulfurization system control method, the method comprising: The actual pressure and the target pressure are obtained. The actual pressure is the inlet pressure of the desulfurization system, and the target pressure is determined based on the actual gas consumption and the opening degree of the flue damper. The pressure deviation value is determined based on the difference between the target pressure and the actual pressure; The frequency of the fan inverter is adjusted based on the pressure deviation value to bring the actual pressure closer to the target pressure.

[0005] In some embodiments, the step of adjusting the frequency of the fan inverter based on the pressure deviation value includes: If the pressure deviation value is less than the first control threshold, increase the frequency of the fan inverter; and / or, If the pressure deviation value is greater than the second control threshold, the frequency of the fan inverter is reduced.

[0006] In some embodiments, the pressure deviation value includes multiple control intervals, the range of at least one of the multiple control intervals being determined based on the first control threshold and / or the second control threshold, and the control interval including a frequency adjustment coefficient. The step of adjusting the frequency of the fan inverter based on the pressure deviation value includes: The target frequency adjustment coefficient is determined based on the range of the control interval corresponding to the pressure deviation value; The frequency of the wind turbine inverter is adjusted according to the target frequency adjustment coefficient.

[0007] In some implementations, the desulfurization system control method further includes: Obtain the change value of the actual gas consumption; The frequency adjustment coefficient is adjusted based on the change in the actual amount of gas used.

[0008] In some embodiments, the actual gas consumption and / or flue damper opening degree include multiple numerical ranges, and the desulfurization system control method further includes: The target pressure is determined based on the correspondence between the actual gas consumption and multiple numerical ranges of the flue damper opening.

[0009] In some embodiments, the range of at least one of the multiple numerical ranges of the flue damper opening is determined based on a preset opening, which indicates the upper limit of the flue damper's ability to regulate furnace pressure.

[0010] In some implementations, the desulfurization system control method further includes: Obtain the furnace pressure; Detect the opening degree of the flue damper; When the flue damper opening is less than or equal to the preset opening and the furnace pressure is greater than or less than the pressure threshold, the flue damper is adjusted to bring the furnace pressure closer to the pressure threshold.

[0011] A second aspect of this application provides a desulfurization system control device, the device comprising: The acquisition unit is used to acquire the actual pressure and the target pressure. The actual pressure is the inlet pressure of the desulfurization system, and the target pressure is related to the actual amount of coal gas used and the opening degree of the flue damper. A determining unit is used to determine a pressure deviation value based on the difference between the target pressure and the actual pressure; An adjustment unit is used to adjust the frequency of the fan inverter based on the pressure deviation value, so that the actual pressure approaches the target pressure.

[0012] A third aspect of this application provides an electronic device, which includes at least one processor and at least one memory connected to the processor, wherein the processor is used to call program instructions in the memory to execute the desulfurization system control method described in any of the first aspects.

[0013] A fourth aspect of this application provides a storage medium including a stored program, wherein, when the program is executed, the device containing the storage medium is controlled to perform the desulfurization system control method described in any of the first aspects.

[0014] In summary, the desulfurization system control method provided in this application includes: acquiring an actual pressure and a target pressure, wherein the actual pressure is the inlet pressure of the desulfurization system, and the target pressure is determined based on the actual gas consumption and the flue damper opening; determining a pressure deviation value based on the difference between the target pressure and the actual pressure; and adjusting the frequency of the fan inverter based on the pressure deviation value to bring the actual pressure closer to the target pressure. By acquiring the actual pressure, i.e., the inlet pressure of the desulfurization system, and determining the target pressure based on the current actual gas consumption and the flue damper opening, determining the pressure deviation value based on the difference between the two, and adjusting the frequency of the fan inverter in the desulfurization system based on the pressure deviation value, the actual pressure at the inlet of the desulfurization system is brought closer to the target pressure, allowing the flue gas in the furnace to be smoothly extracted, thereby ensuring the stability of the furnace pressure.

[0015] Correspondingly, the desulfurization system control device, electronic device, and computer-readable storage medium provided in the embodiments of this application also have the above-mentioned technical effects. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic flowchart illustrating a possible desulfurization system control method provided in this application embodiment; Figure 2 A schematic structural block diagram of a possible desulfurization system control device provided in the embodiments of this application; Figure 3 This application provides a schematic diagram of a possible hardware structure for a desulfurization system control device. Figure 4 A schematic structural block diagram of a possible electronic device provided in an embodiment of this application; Figure 5 This is a schematic structural block diagram of a possible computer-readable storage medium provided for embodiments of this application. Detailed Implementation

[0017] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. The technical solutions of the embodiments of this application will now be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them.

[0018] The first aspect of this application provides a desulfurization system control method. Figure 1 This is a schematic flowchart illustrating the desulfurization system control method provided in the embodiments of this application; as follows: Figure 1 As shown, the desulfurization system control methods include: S110, obtain actual pressure and target pressure.

[0019] For example, the actual pressure can be detected by a pressure sensor; this actual pressure is the inlet pressure of the desulfurization system. The target pressure is determined based on the actual gas consumption and the opening degree of the flue damper. The target pressure is the negative pressure required to extract the flue gas from the current heating furnace. Since the actual gas consumption frequently changes, the pressure required to extract the flue gas from the heating furnace will also change accordingly. Therefore, in practice, the actual pressure and target pressure can be periodically detected to ensure that the obtained actual and target pressures match the actual situation.

[0020] Understandably, during the heating process of slabs in the heating furnace, the more heat the slabs require, the greater the actual amount of coal gas used, resulting in more flue gas being generated. More flue gas necessitates a higher negative pressure from the desulfurization system's fans, and a larger flue gas damper opening indicates a larger flue gas generation rate in the heating furnace. Therefore, the target pressure can be determined based on the actual coal gas usage and the flue gas damper opening. This can be determined through empirical estimation or system modeling, without any specific limitations.

[0021] S120, determine the pressure deviation value based on the difference between the target pressure and the actual pressure.

[0022] For example, the pressure deviation value can be obtained based on the difference between the target pressure and the actual pressure; that is, the difference between the negative pressure required to extract the flue gas from the current heating furnace and the current inlet pressure of the desulfurization system. The pressure deviation value for each period can also be determined based on the periodically acquired difference between the actual pressure and the target pressure. The pressure deviation value can be determined using the following formula: (1) in, Indicates the pressure deviation value. Indicates target pressure. This represents the actual pressure. It's easy to understand that the fan needs to generate negative pressure to extract the flue gas from the heating furnace, therefore... and All are negative numbers.

[0023] S120 adjusts the frequency of the fan inverter based on the pressure deviation value.

[0024] For example, adjusting the frequency of the blower inverter in the desulfurization system based on the pressure deviation value can regulate the negative pressure generated by the blower, bringing the actual pressure closer to the target pressure. For instance, periodically acquiring the actual pressure and target pressure yields the corresponding pressure deviation value. This pressure deviation value can then be used to periodically adjust the frequency of the blower inverter, ensuring the negative pressure generated by the blower meets the target pressure. By acquiring the actual pressure (the inlet pressure of the desulfurization system) and determining the target pressure based on the current actual gas consumption and the flue damper opening, the pressure deviation value is determined based on the difference between the two. Adjusting the frequency of the blower inverter in the desulfurization system based on this pressure deviation value brings the actual pressure at the desulfurization system inlet closer to the target pressure, allowing the flue gas in the furnace to be smoothly extracted, thus ensuring the stability of the furnace pressure.

[0025] According to some embodiments, the step of adjusting the frequency of the fan inverter based on the pressure deviation value includes: increasing the frequency of the fan inverter when the pressure deviation value is less than a first control threshold; and / or decreasing the frequency of the fan inverter when the pressure deviation value is greater than a second control threshold.

[0026] For example, if the pressure deviation value is within a certain range, it means that the negative pressure required to extract the flue gas in the heating furnace and the current inlet pressure of the desulfurization system are within a controllable range, the flue gas can be extracted normally, and the current furnace pressure of the heating furnace is in a stable state. Therefore, there is no need to make unnecessary adjustments to the fan frequency converter to improve the working stability of the desulfurization system fan and extend the service life of the desulfurization system fan. At the same time, it will not cause unnecessary interference to the relatively stable flue gas flow in the furnace.

[0027] If the pressure deviation is less than the first control threshold, the target pressure is less than the actual pressure and exceeds the specified threshold range. It is necessary to increase the frequency of the fan inverter to increase the negative pressure generated by the desulfurization system fan so that the flue gas can be extracted smoothly and the furnace pressure of the heating furnace can be stabilized.

[0028] When the pressure deviation value is greater than the second control threshold, the target pressure is greater than the actual pressure and exceeds the specified threshold range. It is necessary to reduce the frequency of the fan inverter to reduce the negative pressure generated by the desulfurization system fan, so as to avoid the flue gas being extracted too quickly, causing cold air to be introduced into the furnace head and affecting the temperature uniformity of the slab.

[0029] Understandably, the values ​​of the first and second control thresholds can be determined based on actual conditions, such as the actual amount of gas used and the volume of the heating furnace.

[0030] According to some embodiments, the pressure deviation value includes multiple control intervals, the range of at least one of the multiple control intervals is determined based on a first control threshold and / or a second control threshold, the control interval includes a frequency adjustment coefficient, and the step of adjusting the frequency of the fan inverter based on the pressure deviation value includes: determining a target frequency adjustment coefficient according to the range of the control interval corresponding to the pressure deviation value; and adjusting the frequency of the fan inverter according to the target frequency adjustment coefficient.

[0031] Understandably, the pressure deviation value can be divided into multiple control intervals, with no overlapping ranges. Furthermore, the control of at least one interval is determined based on a first control threshold and / or a second control threshold. For example, the range of a control interval could be [first control threshold, second control threshold] or (first control threshold, X], where X is a value greater than the first control threshold. Each control interval corresponds to a frequency adjustment coefficient. The target frequency adjustment coefficient is determined based on the range within which the pressure deviation value falls, and the frequency of the fan inverter is adjusted according to the target adjustment frequency coefficient.

[0032] For example, the fan frequency can be adjusted according to the following formula: (2) in, This indicates the target frequency of the desulfurization system fan. This indicates the current frequency of the desulfurization system fans. This represents the target frequency adjustment coefficient.

[0033] Establish the following multiple control intervals: P∈(-5000, -80), =0.5; P∈[-80,-30), =0.3; P∈[-30, 30], =0; P∈(30,80], P∈(80, 5000), Where P represents the pressure deviation value.

[0034] Determine the target frequency adjustment coefficient when the pressure deviation falls within the range of different control intervals. Adjust the current frequency of the desulfurization system fan to the target frequency according to formula (2). It should be noted that when P∈[-30, 30], =0, the interval [-30, 30] is equivalent to [first control threshold, second control threshold], indicating that if the pressure deviation falls within this control interval, there is no need to adjust the current frequency of the desulfurization system fan. Since the control interval reflects the pressure deviation between the target pressure and the actual pressure, the current furnace pressure status can be determined based on the pressure deviation. If the pressure deviation is large, the corresponding control interval range is such as P∈(-5000, -80). =0.5 indicates that the flue gas in the furnace is severely accumulated and needs to be extracted more quickly. Therefore, the frequency adjustment coefficient corresponding to P∈(-5000, -80) should be larger to extract the flue gas from the furnace more quickly. The opposite is true for cases with smaller pressure deviation values, which will not be elaborated further.

[0035] It should be noted that since the furnace pressure is related to the actual gas consumption, which frequently changes, the pressure deviation value can be periodically acquired. Based on this periodically acquired pressure deviation value, the corresponding control range can be determined. Then, the frequency of the fan inverter can be adjusted based on the target frequency adjustment coefficient corresponding to the control range and the current frequency of the desulfurization system fan. For example, if the pressure deviation value acquired in the first cycle falls within the control range P∈[-80,-30), then according to... =0.3 Adjust the frequency of the fan inverter. If the pressure deviation value obtained in the second cycle still falls within the control range of P∈[-80,-30), then it is still based on =0.3 Adjust the frequency of the fan inverter. As the actual gas consumption and the extraction of flue gas from the heating furnace by the desulfurization system fan change, the control range corresponding to the pressure deviation value changes. Therefore, the fan inverter is adjusted according to different frequency adjustment coefficients. The desulfurization system control method provided in this application establishes multiple control ranges, each with a corresponding frequency adjustment coefficient. The target frequency adjustment coefficient is determined based on the range within which the pressure deviation value falls, and the frequency of the desulfurization system fan is adjusted according to the target frequency adjustment coefficient. This application can avoid large fluctuations in the inverter frequency set by the control system, which can cause oscillations and sudden changes in inverter current during the inverter adjustment process. According to some embodiments, the desulfurization system control method further includes: obtaining the change value of the actual coal gas consumption; and adjusting the frequency adjustment coefficient based on the change value of the actual coal gas consumption.

[0036] For example, the actual gas consumption is periodically acquired. The change in the actual gas consumption represents the difference between two consecutive acquisitions. If the actual gas consumption acquired in the later acquisition is greater than that acquired in the previous acquisition, and the difference is large, it indicates that the current working load of the heating furnace is large, and the corresponding flue gas generation in the furnace will also increase significantly. Consequently, the furnace pressure will fluctuate significantly. Therefore, the desulfurization system control method provided in this application can increase the frequency adjustment coefficient so that the negative pressure generated by the desulfurization system fan can quickly extract the flue gas from the furnace.

[0037] According to some embodiments, the actual gas consumption and / or flue damper opening degree include multiple numerical ranges, and the desulfurization system control method further includes: determining the target pressure based on the correspondence between the multiple numerical ranges of the actual gas consumption and the flue damper opening degree.

[0038] For example, the actual gas consumption G is set to N1 intervals, namely (-∞, 2.5], (2.5, 4.0], (4.0, 5.0], and (5.0, ∞], and the flue damper opening Y is set to N2 intervals, namely [0, 70%] and [70%, 100%], for a total of 8 target pressure values ​​N1*N2, as shown in Table 1 below:

[0039] Table 1 As shown in Table 1, the target pressure value can be determined based on the numerical range correspondence between the actual gas consumption G and the flue damper opening Y.

[0040] It should be noted that by establishing the correspondence between the flue damper opening degree and the actual gas consumption to determine the target pressure, the target pressure required by the heating furnace under the current actual gas consumption and flue damper opening degree can be quickly determined, thereby determining the pressure deviation value. Then, the frequency of the fan inverter is adjusted according to the pressure deviation value so that the negative pressure generated by the desulfurization system fan can ensure the stable discharge of flue gas from the heating furnace.

[0041] According to some embodiments, at least one of the multiple numerical ranges of the flue damper opening is determined based on a preset opening, which is used to indicate the upper limit of the flue damper's ability to regulate furnace pressure.

[0042] It should be noted that the furnace pressure is related to the actual gas consumption, and adjusting the flue damper opening can regulate the furnace pressure. When the furnace pressure is too high, increasing the flue damper opening can increase the outlet area for flue gas discharge, thus reducing the furnace pressure. However, even when the flue damper opening reaches the preset opening, the furnace pressure remains very high. Further increasing the opening will not reduce the furnace pressure solely through flue damper discharge. Therefore, the preset opening is used to indicate the upper limit of the flue damper's ability to regulate furnace pressure.

[0043] According to some embodiments, the desulfurization system control method further includes: acquiring the furnace pressure; detecting the flue damper opening degree; and adjusting the flue damper to bring the furnace pressure closer to the pressure threshold when the flue damper opening degree is less than or equal to a preset opening degree and the furnace pressure is greater than or less than the pressure threshold.

[0044] It should be noted that furnace pressure refers to the pressure inside the heating furnace. The pressure threshold is the stable pressure value of the flue gas inside the heating furnace, such as 10 Pa. A flue damper opening less than or equal to a preset opening indicates that the damper can regulate the furnace pressure. Therefore, when the furnace pressure is not equal to the pressure threshold, adjusting the damper can affect the furnace pressure, thus eliminating the need to adjust the operating status of the desulfurization system fans. For example, if the flue damper opening is less than or equal to the preset opening and the furnace pressure is greater than the pressure threshold, increasing the flue damper opening will increase the outlet area for flue gas discharge from the heating furnace, thereby reducing the furnace pressure to approach the pressure threshold. Adjusting the flue damper opening to bring the furnace pressure closer to the pressure threshold without adjusting the frequency of the desulfurization system fans reduces the need to adjust the fan speed, extending fan lifespan. Furthermore, since it eliminates the need to adjust the negative pressure generated by the desulfurization system, it reduces interference from the desulfurization system on the heating furnace pressure.

[0045] The desulfurization system control method has been described above. The desulfurization system control device in the embodiments of this application is described below.

[0046] Please see Figure 2 One embodiment of the desulfurization system control device described in this application may include: The acquisition unit 201 is used to acquire the actual pressure and the target pressure. The actual pressure is the inlet pressure of the desulfurization system, and the target pressure is related to the actual amount of coal gas used and the opening degree of the flue damper. The determining unit 202 is used to determine the pressure deviation value based on the difference between the target pressure and the actual pressure; The regulating unit 203 is used to adjust the frequency of the fan inverter based on the pressure deviation value so that the actual pressure approaches the target pressure.

[0047] According to the desulfurization system control device provided in the above embodiment, the actual pressure, i.e. the inlet pressure of the desulfurization system, is obtained, and the target pressure is determined based on the current actual gas consumption and the opening degree of the flue damper. The pressure deviation value is determined based on the difference between the two, and the frequency of the fan frequency converter in the desulfurization system is adjusted based on the pressure deviation value so that the actual pressure at the inlet of the desulfurization system approaches the target pressure, so that the flue gas in the furnace can be smoothly extracted, thereby ensuring the stability of the furnace pressure.

[0048] above Figure 2 The desulfurization system control device in this application embodiment has been described from the perspective of modular functional entities. The following is a detailed description of the desulfurization system control device in this application embodiment from the perspective of hardware processing. Please refer to [link / reference needed]. Figure 3 The present application provides a schematic diagram of the hardware structure of a desulfurization system control device, including: The system includes an input device 301, an output device 302, a processor 303, and a memory 304, wherein the number of processors 303 can be one or more. Figure 3 Taking a processor 303 as an example. In some embodiments of this application, the input device 301, output device 302, processor 303, and memory 304 can be connected via a bus or other means, wherein... Figure 3 Taking the example of a connection between China and Israel via a bus.

[0049] Specifically, by calling the operation instructions stored in memory 304, processor 303 is used to execute the steps of the desulfurization system control method as described in any of the first aspects above.

[0050] For specific implementation details, please refer to [link / reference]. Figure 4 , Figure 4 This is a schematic structural block diagram of an electronic device provided in an embodiment of this application. When the processor 420 executes the computer program 411 in the memory 410, it can achieve... Figure 1 Any one of the corresponding implementation methods in the embodiments. Since the electronic device described in this embodiment is a device used to implement a system resource management device in the embodiments of this application, those skilled in the art can understand the specific implementation method and its various variations of the electronic device in this embodiment based on the method described in the embodiments of this application. Therefore, how the electronic device implements the method in the embodiments of this application will not be described in detail here. Any device used by those skilled in the art to implement the method in the embodiments of this application falls within the scope of protection of this application.

[0051] Please see Figure 5 , Figure 5 This is a schematic diagram illustrating an embodiment of a computer-readable storage medium provided in this application.

[0052] like Figure 5 As shown, this embodiment provides a computer-readable storage medium 500 on which a computer program 511 is stored. When executed by a processor, the computer program 511 implements the steps of the desulfurization system control method as proposed in any of the first aspects above.

[0053] 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 computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0054] 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.

[0055] 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.

[0056] This application also provides a computer program product, which includes computer software instructions that, when executed on a processing device, cause the processing device to perform actions such as... Figure 1 The process flow of the desulfurization system control method in the corresponding embodiment.

[0057] The aforementioned computer program product includes one or more computer instructions. When the aforementioned computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The aforementioned computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The aforementioned computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the aforementioned computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The aforementioned computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a server or data center that integrates one or more available media. The aforementioned available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state disks (SSDs)).

[0058] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0059] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between devices or units through some interfaces, and may be electrical, mechanical, or other forms.

[0060] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0061] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0062] If the aforementioned integrated units are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0063] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A desulfurization system control method, characterized in that, include: The actual pressure and the target pressure are obtained. The actual pressure is the inlet pressure of the desulfurization system, and the target pressure is determined based on the actual gas consumption and the opening degree of the flue damper. The pressure deviation value is determined based on the difference between the target pressure and the actual pressure; The frequency of the fan inverter is adjusted based on the pressure deviation value to bring the actual pressure closer to the target pressure.

2. The desulfurization system control method according to claim 1, characterized in that, The step of adjusting the frequency of the fan inverter based on the pressure deviation value includes: If the pressure deviation value is less than the first control threshold, increase the frequency of the fan inverter; and / or, If the pressure deviation value is greater than the second control threshold, reduce the frequency of the fan inverter; The first control threshold is less than the second control threshold.

3. The desulfurization system control method according to claim 2, characterized in that, The pressure deviation value includes multiple control intervals, and the range of at least one of the multiple control intervals is determined based on the first control threshold and / or the second control threshold. The control interval includes a frequency adjustment coefficient. The step of adjusting the frequency of the fan inverter based on the pressure deviation value includes: The target frequency adjustment coefficient is determined based on the range of the control interval corresponding to the pressure deviation value; The frequency of the wind turbine inverter is adjusted according to the target frequency adjustment coefficient.

4. The desulfurization system control method according to claim 3, characterized in that, Also includes: Obtain the change value of the actual gas consumption; The frequency adjustment coefficient is adjusted based on the change in the actual amount of gas used.

5. The desulfurization system control method according to claim 1, characterized in that, The actual gas consumption and / or flue damper opening include multiple numerical ranges, and the desulfurization system control method further includes: The target pressure is determined based on the correspondence between the actual gas consumption and multiple numerical ranges of the flue damper opening.

6. The desulfurization system control method according to claim 5, characterized in that, The range of at least one of the multiple numerical ranges of the flue damper opening is determined based on a preset opening, which indicates the upper limit of the flue damper's ability to regulate furnace pressure.

7. The desulfurization system control method according to claim 6, characterized in that, Also includes: Obtain the furnace pressure of the heating furnace; Detect the opening degree of the flue damper; When the flue damper opening is less than or equal to the preset opening and the furnace pressure is greater than or less than the pressure threshold, the flue damper is adjusted to bring the furnace pressure closer to the pressure threshold.

8. A desulfurization system control device, characterized in that, include: The acquisition unit is used to acquire the actual pressure and the target pressure. The actual pressure is the inlet pressure of the desulfurization system, and the target pressure is determined based on the actual amount of coal gas used and the opening degree of the flue damper. A determining unit is used to determine a pressure deviation value based on the difference between the target pressure and the actual pressure; An adjustment unit is used to adjust the frequency of the fan inverter based on the pressure deviation value, so that the actual pressure approaches the target pressure.

9. An electronic device, characterized in that, The electronic device includes at least one processor and at least one memory connected to the processor, wherein the processor is used to call program instructions in the memory to execute the desulfurization system control method as described in any one of claims 1 to 7.

10. A storage medium, characterized in that, The storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the storage medium to perform the desulfurization system control method as described in any one of claims 1 to 7.

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