A control method, device, system and computer device of a tail gas treatment equipment

Abstract

The application discloses a tail gas treatment equipment control method, device, system and computer equipment. The method comprises the following steps: calculating a basic control parameter according to a furnace set temperature and an actual temperature of a combustion furnace; calculating an inlet valve target pressure according to the basic control parameter, a preset inlet valve coefficient and an inlet valve set pressure; sending a control instruction to the inlet valve to adjust the actual pressure of the inlet valve to the target pressure; calculating a fan target frequency of each workshop according to the basic control parameter, a preset fan coefficient of each workshop and a fan set frequency; and sending a control instruction to the fan of each workshop to adjust the actual frequency of the fan to the target frequency. According to the furnace set temperature and the actual temperature of the combustion furnace, the inlet valve pressure and the frequency of each fan can be automatically adjusted, manual control of the inlet valve and each fan is not needed, and conflicts between workshops are avoided.

Description

Technical Field

[0001] This application relates to the field of exhaust gas technology, and in particular to a control method, apparatus, system and computer equipment for exhaust gas treatment equipment. Background Technology

[0002] Currently, a factory has multiple workshops, each with its own exhaust gas fan to transport exhaust gas to the exhaust gas workshop, where it is then centrally treated by an RTO combustion furnace before being discharged.

[0003] The current solution to this situation is that each workshop manually controls its own fan speed, while the exhaust gas treatment workshop manually controls the total intake air volume by controlling the RTO combustion furnace inlet valve. This creates a conflict where each workshop wants to increase its fan speed to expel as much exhaust gas as possible; however, the exhaust gas treatment workshop, with its limited capacity, needs to maintain the total intake air volume within a certain range. This leads to competition and conflict between the workshops and between the workshops and the exhaust gas treatment workshop. In this process, each workshop increasing its fan speed not only causes an increase in pressure in the exhaust gas collection pipe but also easily leads to exhaust gas backflow into workshops that have not increased their fan speed. Summary of the Invention

[0004] Based on this, and in response to the aforementioned technical problems, a control method, device, system, and computer equipment for exhaust gas treatment equipment are provided to solve the technical problem that the exhaust gas fans in each workshop and the RTO combustion furnace in the exhaust gas workshop rely on manual control, which easily leads to conflicts between workshops.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] In a first aspect, a control method for an exhaust gas treatment device includes:

[0007] The actual furnace temperature (PV), inlet valve pressure, and fan frequency of each workshop of the RTO combustion furnace are acquired in real time.

[0008] Based on the set furnace temperature SP of the RTO combustion furnace and the actual furnace temperature PV of the RTO combustion furnace, the basic control parameter BC is calculated using the first calculation formula.

[0009] Based on the basic control parameters BC, the preset inlet valve coefficient K of the RTO combustion furnace, and the inlet valve set pressure SP′ of the RTO combustion furnace, the target pressure of the inlet valve of the RTO combustion furnace is calculated using the second calculation formula.

[0010] Based on the target pressure of the RTO combustion furnace inlet valve and the actual pressure of the RTO combustion furnace inlet valve, a control command is sent to the RTO combustion furnace inlet valve based on the PID control algorithm, so that the actual pressure of the RTO combustion furnace inlet valve is adjusted to the target pressure of the RTO combustion furnace inlet valve.

[0011] Based on the basic control parameters BC, the preset fan coefficient Ki for each workshop, and the set fan frequency SPi (i = 1, 2, 3...) for each workshop, the target fan frequency for each workshop is calculated using the third calculation formula.

[0012] Based on the target frequency and actual frequency of the fans in each workshop, a corresponding control command is sent to the fans in each workshop using a PID control algorithm, so that the actual frequency of the fans in each workshop is adjusted to the corresponding target frequency.

[0013] Optionally, the first calculation formula is as follows:

[0014] Basic control parameters

[0015] Among them, K p T is the proportional coefficient of the controller. i T represents the integral coefficient of the controller. d Here, e is the differential coefficient of the controller, T is the adjustment period, and e is the differential coefficient of the controller. k e j For |SP-PV|.

[0016] Optionally, the second calculation formula is as follows:

[0017] The target pressure of the inlet valve of the RTO combustion furnace is BC*K+SP′.

[0018] Optionally, the third calculation formula is specifically as follows:

[0019] The target frequency of the workshop's fans = BC*Ki + SPi.

[0020] Optionally, the actual furnace temperature PV of the RTO combustion furnace, the actual pressure of the RTO combustion furnace inlet valve, and the actual frequency of the blower in each workshop can be obtained in real time using OPC communication, and control commands can be sent to the inlet valve of the RTO combustion furnace and the blower in each workshop using OPC communication.

[0021] Secondly, a control device for an exhaust gas treatment equipment includes:

[0022] The data acquisition module is used to acquire the actual furnace temperature PV of the RTO combustion furnace, the actual pressure of the inlet valve of the RTO combustion furnace, and the actual frequency of the blower in each workshop in real time.

[0023] The basic control parameter calculation module is used to calculate the basic control parameter BC based on the furnace set temperature SP and the actual furnace temperature PV of the RTO combustion furnace using the first calculation formula.

[0024] The inlet valve target pressure calculation module is used to calculate the target pressure of the RTO combustion furnace inlet valve according to the basic control parameter BC, the preset inlet valve coefficient K of the RTO combustion furnace and the inlet valve set pressure SP′ of the RTO combustion furnace through the second calculation formula.

[0025] The inlet valve pressure adjustment module is used to send control commands to the inlet valve of the RTO combustion furnace based on the target pressure of the inlet valve and the actual pressure of the inlet valve of the RTO combustion furnace, so that the actual pressure of the inlet valve of the RTO combustion furnace is adjusted to the target pressure of the inlet valve of the RTO combustion furnace.

[0026] The fan target frequency calculation module is used to calculate the fan target frequency of each workshop based on the basic control parameters BC, the preset fan coefficient Ki of each workshop and the fan set frequency SPi (i=1,2,3...) of each workshop, through the third calculation formula.

[0027] The fan frequency adjustment module is used to send corresponding control commands to the fans in each workshop based on the target frequency and actual frequency of the fans in each workshop, using a PID control algorithm, so that the actual frequency of the fans in each workshop is adjusted to the corresponding target frequency.

[0028] Thirdly, a control system for an exhaust gas treatment device includes exhaust gas fans, RTO combustion furnaces, and a main control unit for multiple workshops; the main control unit includes a memory and a controller, the memory storing a computer program; the controller is bidirectionally connected to the exhaust gas fans and RTO combustion furnaces of each workshop, and the controller executes the computer program to implement the steps of the method described in any one of the first aspects.

[0029] Optionally, the controller is bidirectionally connected to the exhaust gas fan and RTO combustion furnace in each workshop via OPC communication.

[0030] Fourthly, a computer device includes a memory and a processor, the memory storing a computer program, the processor executing the computer program to implement the steps of the method described in any one of the first aspects.

[0031] Fifthly, a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described in any one of the first aspects.

[0032] The present invention has at least the following beneficial effects:

[0033] In the control method of the exhaust gas treatment equipment provided in this embodiment of the invention, the basic control parameters BC are first calculated based on the furnace set temperature SP and the actual furnace temperature PV of the RTO combustion furnace; then, the target pressure of the RTO combustion furnace inlet valve is calculated based on the basic control parameters BC, the preset inlet valve coefficient K of the RTO combustion furnace, and the set pressure SP′ of the RTO combustion furnace inlet valve; and the target frequency of the fan in each workshop is calculated based on the basic control parameters BC, the preset fan coefficient Ki of each workshop, and the set frequency SPi of each workshop fan. Control commands are then sent to the inlet valve of the RTO combustion furnace and the fans in each workshop to adjust the actual pressure of the RTO combustion furnace inlet valve to the target pressure and to adjust the actual frequency of the fans in each workshop to the corresponding target frequency. This achieves the technical effect of automatically adjusting the inlet valve pressure of the RTO combustion furnace and the frequency of each fan according to the furnace set temperature SP and the actual furnace temperature PV, eliminating the need for manual control of the RTO combustion furnace inlet valve and each fan individually, thus avoiding conflicts caused by competition between workshops. Attached Figure Description

[0034] Figure 1 This is a schematic flowchart illustrating a control method for an exhaust gas treatment device according to an embodiment of the present invention.

[0035] Figure 2 This is a schematic diagram of the RTO inlet valve control logic in one embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of the control logic for the fans in each workshop in one embodiment of the present invention;

[0037] Figure 4 A block diagram of the control device for an exhaust gas treatment apparatus provided in one embodiment of the present invention;

[0038] Figure 5 This is a schematic diagram of the control system of an exhaust gas treatment device according to one embodiment of the present invention;

[0039] Figure 6 This is an internal structural diagram of a computer device provided in one embodiment of the present invention. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0041] In one embodiment, such as Figure 1 As shown, a control method for an exhaust gas treatment device is provided, comprising the following steps:

[0042] S1, real-time acquisition of the actual furnace temperature PV of the RTO combustion furnace, the actual pressure of the inlet valve of the RTO combustion furnace, and the actual frequency of the blower in each workshop.

[0043] S2, based on the furnace set temperature SP and the actual furnace temperature PV of the RTO combustion furnace, the basic control parameter BC is calculated using the first calculation formula.

[0044] The first calculation formula is as follows:

[0045] Basic control parameters

[0046] Among them, K p T is the proportional coefficient of the controller. i T represents the integral coefficient of the controller. d Here, e is the differential coefficient of the controller, T is the adjustment period, and e is the differential coefficient of the controller. k e j For |SP-PV|.

[0047] S3. Based on the basic control parameters BC, the preset inlet valve coefficient K of the RTO combustion furnace, and the inlet valve set pressure SP′ of the RTO combustion furnace, the target pressure of the inlet valve of the RTO combustion furnace is calculated using the second calculation formula.

[0048] The second calculation formula is as follows:

[0049] The target pressure of the inlet valve of the RTO combustion furnace is BC*K+SP′.

[0050] S4. Based on the target pressure of the RTO combustion furnace inlet valve and the actual pressure of the RTO combustion furnace inlet valve, a control command is sent to the RTO combustion furnace inlet valve based on the PID control algorithm, so that the actual pressure of the RTO combustion furnace inlet valve is adjusted to the target pressure of the RTO combustion furnace inlet valve.

[0051] S5. Based on the basic control parameters BC, the preset fan coefficient Ki for each workshop, and the set fan frequency SPi (i = 1, 2, 3...) for each workshop, the target fan frequency for each workshop is calculated using the third calculation formula.

[0052] The third calculation formula is as follows:

[0053] The target frequency of the workshop's fans = BC*Ki + SPi.

[0054] i takes values ​​of 1, 2, 3... to represent different workshops. The preset fan coefficient for each workshop is set according to the actual site conditions. The preset fan coefficient for the main workshops is...

[0055] S6, based on the target frequency and actual frequency of the fans in each workshop, sends corresponding control commands to the fans in each workshop using a PID control algorithm, so that the actual frequency of the fans in each workshop is adjusted to the corresponding target frequency.

[0056] Furthermore, in the above steps, specifically, the actual furnace temperature PV of the RTO combustion furnace, the actual pressure of the RTO combustion furnace inlet valve, and the actual frequency of the blower in each workshop are obtained in real time using OPC communication, and control commands are sent to the inlet valve of the RTO combustion furnace and the blower in each workshop using OPC communication.

[0057] In other words, the control method for the aforementioned exhaust gas treatment equipment includes three parts: data acquisition, data processing, and data return. Both data acquisition and data return use OPC communication to collect relevant data from the original control system and transmit the processed fan frequency signal and inlet valve pressure signal back to the original control system for delivery to the corresponding actuators.

[0058] The data processing includes the following three parts:

[0059] 1) It is controlled by the RTO inlet valve, such as Figure 2 As shown, the control scheme consists of a furnace set temperature SP and an actual temperature PV forming a controller 1. The output of controller 1 is multiplied by a coefficient K and then added to the inlet pressure setpoint of valve controller 2 to form a cascade control.

[0060] exist Figure 2 In this context, SP is the RTO furnace temperature setpoint, PV is the RTO furnace temperature, K is the RTO inlet valve coefficient, SP′ is the RTO inlet valve setpoint, and PV1 is the RTO inlet valve real-time value.

[0061] 2) This refers to the fan control in each workshop, such as... Figure 3 As shown, the control scheme consists of a furnace set temperature SP and an actual temperature PV forming a controller 1. The output of controller 1 is multiplied by a coefficient K and then added to the inlet pressure setpoint of each workshop fan controller to form a cascade control.

[0062] exist Figure 3 In the diagram, SP is the RTO furnace temperature setpoint, PV is the RTO furnace temperature, K1, K2, K3, and K4 are the fan coefficients for each workshop, SP1, SP2, SP3, and SP4 are the fan setpoints for each workshop, and PV1, PV2, PV3, and PV4 are the real-time fan values ​​for each workshop.

[0063] 3) Decoupling control of exhaust gas in each workshop: When the opening of the RTO inlet valve fluctuates within a certain range, the total speed of the exhaust gas fan in each workshop remains within a certain range. When the opening of the RTO inlet valve fluctuates significantly, the total speed of the exhaust gas fan in each workshop changes accordingly, that is, the total speed of the fan in each workshop changes in line with the RTO inlet valve.

[0064] Compared with the current manual control, the method adopted in this invention can realize fully automatic adjustment of the fans in different workshops, coordinate the control of the fans in each workshop and the inlet valve of the RTO furnace, and prevent competition and backflow between workshops.

[0065] Using the control method of the above-mentioned exhaust gas treatment equipment, when the furnace temperature is higher than the set value, the final set value (absolute value) of the controller 1 output after being added to the RTO inlet valve set value will become smaller, that is, the total exhaust gas volume of the RTO furnace will be reduced, thereby achieving the purpose of reducing the furnace temperature.

[0066] Simultaneously, when the furnace temperature exceeds the set value, the fan frequency of each workshop is reduced accordingly based on the K coefficient, which varies depending on the distance from the exhaust gas workshop. This reduces the exhaust gas from the exhaust gas source, thus controlling the furnace temperature without causing backflow of exhaust gas between workshops. The operation when the furnace temperature is below the set value is the opposite of the operation when it is above the set value.

[0067] The control method for exhaust gas treatment equipment provided in this embodiment of the invention is a centralized optimization control method for exhaust gas from multiple workshops. Specifically, it is a method that uses OPC communication to centrally control the exhaust gas fans and RTO combustion furnace inlet valves of each workshop into the same system.

[0068] In the aforementioned control method for exhaust gas treatment equipment, the basic control parameters BC are first calculated based on the furnace set temperature SP and the actual furnace temperature PV of the RTO combustion furnace. Then, the target pressure of the RTO combustion furnace's inlet valve is calculated based on the basic control parameters BC, the preset inlet valve coefficient K of the RTO combustion furnace, and the set pressure SP′ of the RTO combustion furnace's inlet valve. Similarly, the target frequency of each workshop's fan is calculated based on the basic control parameters BC, the preset fan coefficient Ki of each workshop, and the set fan frequency SPi of each workshop. Control commands are then sent to the inlet valve of the RTO combustion furnace and the fans of each workshop to adjust the actual pressure of the RTO combustion furnace's inlet valve to the target pressure and to adjust the actual frequency of each workshop's fan to the corresponding target frequency. This achieves the technical effect of automatically adjusting the inlet valve pressure of the RTO combustion furnace and the frequency of each fan according to the furnace set temperature SP and the actual furnace temperature PV, eliminating the need for manual control of the RTO combustion furnace's inlet valve and each fan individually, thus avoiding conflicts arising from competition between workshops.

[0069] It should be understood that, although Figure 1 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order in which these steps are executed, and they can be performed in other orders. Figure 1 At least some of the steps in the process may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but may be executed at different times. The execution order of these steps or stages is not necessarily sequential, but may be executed in turn or alternately with other steps or at least some of the steps or stages in other steps.

[0070] In one embodiment, such as Figure 4 As shown, a control device for an exhaust gas treatment equipment is provided, comprising the following program modules:

[0071] The data acquisition module 401 is used to acquire in real time the actual furnace temperature PV of the RTO combustion furnace, the actual pressure of the inlet valve of the RTO combustion furnace, and the actual frequency of the blower in each workshop.

[0072] The basic control parameter calculation module 402 is used to calculate the basic control parameter BC based on the furnace set temperature SP and the actual furnace temperature PV of the RTO combustion furnace using the first calculation formula.

[0073] The inlet valve target pressure calculation module 403 is used to calculate the target pressure of the inlet valve of the RTO combustion furnace based on the basic control parameters BC, the preset inlet valve coefficient K of the RTO combustion furnace and the inlet valve set pressure SP′ of the RTO combustion furnace through the second calculation formula.

[0074] The inlet valve pressure adjustment module 404 is used to send control commands to the inlet valve of the RTO combustion furnace based on the target pressure and actual pressure of the inlet valve of the RTO combustion furnace using a PID control algorithm, so that the actual pressure of the inlet valve of the RTO combustion furnace is adjusted to the target pressure of the inlet valve of the RTO combustion furnace.

[0075] The fan target frequency calculation module 405 is used to calculate the fan target frequency of each workshop based on the basic control parameters BC, the preset fan coefficient Ki of each workshop and the fan set frequency SPi (i=1,2,3...) of each workshop, through the third calculation formula.

[0076] The fan frequency adjustment module 406 is used to send corresponding control commands to the fans in each workshop based on the target frequency and actual frequency of the fans in each workshop, so that the actual frequency of the fans in each workshop is adjusted to the corresponding target frequency.

[0077] For specific limitations regarding the control device of an exhaust gas treatment equipment, please refer to the limitations regarding the control method of an exhaust gas treatment equipment mentioned above, and will not be repeated here. Each module in the control device of the aforementioned exhaust gas treatment equipment can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device in hardware form, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0078] In one embodiment, a control system for an exhaust gas treatment device is provided, including exhaust gas fans, RTO combustion furnaces, and a main control unit for multiple workshops; the main control unit includes a memory and a controller, the memory storing a computer program; the controller is bidirectionally connected to the exhaust gas fans and RTO combustion furnaces of each workshop, and when the controller executes the computer program, it implements any step of the control method for the exhaust gas treatment device described above.

[0079] The controller is bidirectionally connected to the exhaust gas fan and RTO combustion furnace in each workshop via OPC communication. The control system of this exhaust gas treatment equipment can be found in [reference needed]. Figure 5 , Figure 5 In this context, DSC1...DSCn represent exhaust gas fans and RTO combustion furnaces in multiple workshops, and DSC1...DSCn constitute the original system; this system refers to the main control unit.

[0080] The control system of this exhaust gas treatment equipment realizes data exchange between the original system and this system through data acquisition and transmission; after the data is acquired by this system, it is processed according to... Figure 2 and Figure 3 Establish a control scheme, namely:

[0081] according to Figure 2 Establish an RTO inlet valve control scheme: The furnace temperature and the actual temperature form controller 1. The output of controller 1 is multiplied by a coefficient K and then added to the inlet pressure setpoint of valve controller 2 to form a cascade control.

[0082] Establish a fan control scheme for each workshop: The furnace temperature and the actual temperature form controller 1. The output of controller 1 is multiplied by different coefficients Ki and then added to the inlet pressure setpoint of the fan controller in each workshop to form a cascade control.

[0083] In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 6As shown. The computer device includes a processor, memory, communication interface, display screen, and input device connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, carrier networks, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it implements the control method of the exhaust gas treatment device described above. The display screen can be an LCD screen or an e-ink screen. The input device can be a touch layer covering the display screen, buttons, a trackball, or a touchpad on the computer device casing, or an external keyboard, touchpad, or mouse.

[0084] Those skilled in the art will understand that Figure 6 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0085] In one embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program relating to all or part of the processes in the methods of the above embodiments.

[0086] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon relating to all or part of the processes in the methods of the above embodiments.

[0087] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the methods described above. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, or optical storage, etc. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0088] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A control method for an exhaust gas treatment device, characterized in that, include: The actual furnace temperature (PV), inlet valve pressure, and fan frequency of each workshop of the RTO combustion furnace are acquired in real time. Based on the set furnace temperature SP of the RTO combustion furnace and the actual furnace temperature PV of the RTO combustion furnace, the basic control parameter BC is calculated using the first calculation formula. Based on the basic control parameters BC, the preset inlet valve coefficient K of the RTO combustion furnace, and the inlet valve set pressure SP′ of the RTO combustion furnace, the target pressure of the inlet valve of the RTO combustion furnace is calculated using the second calculation formula. Based on the target pressure of the RTO combustion furnace inlet valve and the actual pressure of the RTO combustion furnace inlet valve, a control command is sent to the RTO combustion furnace inlet valve based on the PID control algorithm, so that the actual pressure of the RTO combustion furnace inlet valve is adjusted to the target pressure of the RTO combustion furnace inlet valve. Based on the basic control parameters BC, the preset fan coefficient Ki for each workshop, and the set fan frequency SPi (i=1,2,3...) for each workshop, the target fan frequency for each workshop is calculated using the third calculation formula. Based on the target frequency and actual frequency of the fans in each workshop, a corresponding control command is sent to the fans in each workshop using a PID control algorithm, so that the actual frequency of the fans in each workshop is adjusted to the corresponding target frequency.

2. The control method for the exhaust gas treatment equipment according to claim 1, characterized in that, The first calculation formula is as follows: ， in, This is the proportional gain of the controller. The integral coefficient of the controller. For the differential coefficients of the controller, T To adjust the cycle, for .

3. The control method for the exhaust gas treatment equipment according to claim 1, characterized in that, The second calculation formula is as follows: 。 4. The control method for the exhaust gas treatment equipment according to claim 1, characterized in that, The third calculation formula is as follows: 。 5. The control method for the exhaust gas treatment equipment according to claim 1, characterized in that, The actual furnace temperature (PV), inlet valve pressure, and fan frequency of each workshop of the RTO combustion furnace are obtained in real time using OPC communication. Control commands are also sent to the inlet valve of the RTO combustion furnace and the fans of each workshop using OPC communication.

6. A control device for an exhaust gas treatment equipment, characterized in that, include: The data acquisition module is used to acquire the actual furnace temperature PV of the RTO combustion furnace, the actual pressure of the inlet valve of the RTO combustion furnace, and the actual frequency of the blower in each workshop in real time. The basic control parameter calculation module is used to calculate the basic control parameter BC based on the furnace set temperature SP and the actual furnace temperature PV of the RTO combustion furnace using the first calculation formula. The inlet valve target pressure calculation module is used to calculate the target pressure of the RTO combustion furnace inlet valve according to the basic control parameter BC, the preset inlet valve coefficient K of the RTO combustion furnace and the inlet valve set pressure SP′ of the RTO combustion furnace through the second calculation formula. The inlet valve pressure adjustment module is used to send control commands to the inlet valve of the RTO combustion furnace based on the target pressure of the inlet valve and the actual pressure of the inlet valve of the RTO combustion furnace, so that the actual pressure of the inlet valve of the RTO combustion furnace is adjusted to the target pressure of the inlet valve of the RTO combustion furnace. The fan target frequency calculation module is used to calculate the fan target frequency of each workshop based on the basic control parameters BC, the preset fan coefficient Ki of each workshop and the fan set frequency SPi of each workshop (i=1,2,3...), using the third calculation formula. The fan frequency adjustment module is used to send corresponding control commands to the fans in each workshop based on the target frequency and actual frequency of the fans in each workshop, using a PID control algorithm, so that the actual frequency of the fans in each workshop is adjusted to the corresponding target frequency.

7. A control system for an exhaust gas treatment device, characterized in that, The system includes exhaust gas fans, RTO combustion furnaces, and a main control unit for multiple workshops; the main control unit includes a memory and a controller, the memory storing a computer program; the controller is bidirectionally connected to the exhaust gas fans and RTO combustion furnaces of each workshop, and when the controller executes the computer program, it implements the steps of the method according to any one of claims 1 to 5.

8. The control system of the exhaust gas treatment equipment according to claim 7, characterized in that, The controller is bidirectionally connected to the exhaust gas fan and RTO combustion furnace in each workshop via OPC communication.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 5.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 5.

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