Guide plate regulation and control method, device and equipment of deacidification reaction tower and storage medium

Abstract

The invention discloses a flow guide plate regulation and control method, device and equipment for a deacidification reaction tower and a storage medium. The method comprises the steps that the smoke flow measured by a smoke flow velocity measuring instrument at an outlet pipe section of an induced draft fan is obtained, the smoke flow change rate is calculated based on the smoke flow, and when the smoke flow is larger than the preset rated smoke flow, the flow rate of the induced draft fan is calculated according to the smoke flow; and calculating the adjustment angle of the guide plate, calculating the adjustment speed of the guide plate from the current angle to the adjustment angle according to the flue gas flow change rate, and driving the guide plate control module to regulate and control the outflow angle of the guide plate according to the adjustment speed and the adjustment angle. Therefore, the guide plate can be regulated and controlled according to the real-time flue gas flow and the flue gas flow change rate, so that the flue gas has enough residence time in the reaction tower, the efficient operation of the deacidification reaction in the reaction tower is ensured, and the material waste is reduced.

Description

Technical Field

[0001] The present application relates to the field of waste incineration technology, and more specifically, to a method, device, equipment and storage medium for controlling a guide plate of a deacidification reaction tower. Background Art

[0002] In waste incineration power plants, the treatment of flue gas generated after waste incineration is crucial. Flue gas is usually deacidified through a deacidification tower. During this process, the flow rate of flue gas will change continuously due to factors such as boiler load, air supply volume and induced air volume. When the flow rate of boiler flue gas increases, the time the flue gas stays in the deacidification tower will be shortened; conversely, when the flow rate decreases, the residence time will increase.

[0003] In the chemical reaction carried out in the deacidification reaction tower, reaction time is one of the important factors that determine the reaction efficiency. At present, the installation angle of the guide plate in the existing deacidification reaction tower is fixed, which makes it impossible to automatically adjust the guide plate angle according to the change of flue gas flow rate. In actual operation, since the guide plate angle cannot be flexibly adjusted to control the residence time of the flue gas in the reaction tower, the reaction time of the deacidification reaction cannot be effectively controlled. This situation not only reduces the reaction efficiency, but also causes waste of materials.

[0004] Based on this, how to automatically adjust the guide plate angle according to the flue gas flow rate to improve the deacidification reaction efficiency, reduce material waste, and achieve more environmentally friendly and sustainable waste incineration power generation is an issue that needs attention. Summary of the invention

[0005] In view of the above problems, the present application provides a guide plate control method, device, equipment and storage medium for a deacidification reaction tower to adjust the residence time of flue gas in the reaction tower, ensure the efficient operation of the deacidification reaction in the reaction tower, and reduce material waste.

[0006] In order to achieve the above objectives, the specific plan is proposed as follows:

[0007] A deacidification reaction tower guide plate control method is applied to the control center of an automatic control system, wherein the automatic control system further comprises a flue gas flow rate measuring instrument and a guide plate control module, wherein the guide plate control module is used to control the outflow angle of the guide plate;

[0008] The method includes:

[0009] Obtaining the flue gas flow rate measured by the flue gas velocity measuring instrument at the outlet pipe section of the induced draft fan, and calculating the flue gas flow rate change rate based on the flue gas flow rate;

[0010] When the smoke flow rate is greater than the preset rated smoke flow rate, the adjustment angle of the guide plate is calculated according to the smoke flow rate, and the adjustment speed of the guide plate from the current angle to the adjustment angle is calculated according to the smoke flow rate change rate;

[0011] The guide plate control module is driven to adjust the outflow angle of the guide plate with the adjustment speed and the adjustment angle.

[0012] Optionally, the method further includes:

[0013] When the smoke flow rate is not greater than the preset rated smoke flow rate, the outflow angle of the guide plate is increased.

[0014] Optionally, calculating the adjustment angle of the guide plate according to the smoke flow rate includes:

[0015] The adjustment angle of the guide plate is calculated using the following formula:

[0016]

[0017] in, is the adjustment angle of the guide plate, is the original angle of the guide plate, is the preset rated flue gas flow rate, is the flue gas flow rate.

[0018] Optionally, calculating the flue gas flow rate change rate based on the flue gas flow rate includes:

[0019] The flue gas flow rate change rate is calculated using the following formula:

[0020]

[0021] in, is the flue gas flow rate change rate, is the flue gas flow rate, is the flue gas flow rate in the previous period.

[0022] Optionally, the guide plate control module includes a monitoring submodule, and the monitoring submodule is used to monitor the real-time outflow angle of the guide plate;

[0023] The method further includes:

[0024] The target angle of the guide plate after adjustment is determined using the following formula:

[0025]

[0026] in, is the target angle of the guide plate after adjustment, is the original angle of the guide plate, is the preset rated flue gas flow rate, is the flue gas flow rate;

[0027] When the difference between the real-time outflow angle and the target angle is greater than a preset angle threshold, an alarm is issued to prompt the staff to inspect the guide plate and / or the guide plate control module.

[0028] A guide plate control device for a deacidification reaction tower, applied to a control center of an automatic control system, wherein the automatic control system further comprises a flue gas velocity measuring instrument and a guide plate control module, wherein the guide plate control module is used to control the outflow angle of the guide plate;

[0029] The device includes:

[0030] a smoke flow rate change rate calculation unit, used to obtain the smoke flow rate measured by the smoke flow velocity measuring instrument at the induced draft fan outlet pipe section, and calculate the smoke flow rate change rate based on the smoke flow rate;

[0031] an adjustment angle calculation unit, configured to calculate an adjustment angle of the guide plate according to the smoke flow rate when the smoke flow rate is greater than a preset rated smoke flow rate;

[0032] An adjustment speed calculation unit, used for calculating an adjustment speed of the guide plate from a current angle to the adjustment angle according to the smoke flow rate change rate;

[0033] The regulating drive unit is used to drive the guide plate control module to regulate the outflow angle of the guide plate at the adjustment speed and the adjustment angle.

[0034] Optionally, the device further comprises:

[0035] The outflow angle increasing unit is used to increase the outflow angle of the guide plate when the smoke flow rate is not greater than the preset rated smoke flow rate.

[0036] Optionally, the adjustment angle calculation unit includes:

[0037] The adjustment angle calculation subunit is used to calculate the adjustment angle of the guide plate using the following formula:

[0038]

[0039] in, is the adjustment angle of the guide plate, is the original angle of the guide plate, is the preset rated flue gas flow rate, is the flue gas flow rate.

[0040] Optionally, the smoke flow rate change rate calculation unit includes:

[0041] The flue gas flow rate measured by the flue gas velocity measuring instrument at the outlet pipe section of the induced draft fan is obtained, and the flue gas flow rate change rate is calculated using the following formula:

[0042]

[0043] in, is the flue gas flow rate change rate, is the flue gas flow rate, is the flue gas flow rate in the previous period.

[0044] Optionally, the guide plate control module includes a monitoring submodule, and the monitoring submodule is used to monitor the real-time outflow angle of the guide plate;

[0045] The device also includes:

[0046] The target angle determination unit is used to determine the target angle of the guide plate after adjustment using the following formula:

[0047]

[0048] in, is the target angle of the guide plate after adjustment, is the original angle of the guide plate, is the preset rated flue gas flow rate, is the flue gas flow rate;

[0049] The alarm unit is used to give an alarm when the difference between the real-time outflow angle and the target angle is greater than a preset angle threshold, so as to prompt the staff to inspect the guide plate and / or the guide plate control module.

[0050] A flow guide plate control device for a deacidification reaction tower, comprising a memory and a processor;

[0051] The memory is used to store programs;

[0052] The processor is used to execute the program to implement the various steps of the guide plate control method of the deacidification reaction tower as described above.

[0053] A storage medium stores a computer program, which, when executed by a processor, implements the various steps of the guide plate control method for a deacidification reaction tower as described above.

[0054] By means of the above technical solution, the present application obtains the flue gas flow rate measured by the flue gas velocity measuring instrument at the outlet pipe section of the induced draft fan, and calculates the flue gas flow rate change rate based on the flue gas flow rate. When the flue gas flow rate is greater than the preset rated flue gas flow rate, the adjustment angle of the guide plate is calculated according to the flue gas flow rate, and the adjustment speed of the guide plate from the current angle to the adjustment angle is calculated according to the flue gas flow rate change rate, and the guide plate control module is driven to adjust the outflow angle of the guide plate by adjusting the speed and the angle. It can be seen that the guide plate can be adjusted according to the real-time flue gas flow rate and the flue gas flow rate change rate, so that the flue gas has enough residence time in the reaction tower, ensuring the efficient operation of the deacidification reaction in the reaction tower and reducing material waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0056] Figure 1 A system architecture diagram of an automatic regulating system for controlling the guide plate of a deacidification reaction tower provided in an embodiment of the present application;

[0057] Figure 2 A schematic diagram of a process for realizing the control of the guide plate of the deacidification reaction tower provided in an embodiment of the present application;

[0058] Figure 3 A schematic diagram of a guide plate after being regulated according to an embodiment of the present application;

[0059] Figure 4 A schematic diagram of the structure of a device for controlling the guide plate of a deacidification reaction tower provided in an embodiment of the present application;

[0060] Figure 5 A schematic diagram of the structure of a device for realizing control of a guide plate of a deacidification reaction tower provided in an embodiment of the present application. DETAILED DESCRIPTION

[0061] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0062] Figure 1 An optional system structure of the automatic adjustment system for realizing the regulation of the guide plate of the deacidification reaction tower provided in the embodiment of the present application, such as Figure 1 As shown, the system architecture may include:

[0063] Flue gas flow meter, control center and guide plate control module.

[0064] Among them, the measuring point of the flue gas flow meter can be located at the outlet pipe section of the induced draft fan, and the measured flue gas flow can be transmitted to the control center through communication.

[0065] The control center may be a DCS system, which can determine whether the smoke outflow angle of the guide plate should be increased or decreased according to the range of the smoke flow rate, and adjust the speed of the switch according to the rate of change of the smoke flow rate.

[0066] The guide plate control module can be an electric door and its control mechanism configured on the guide plate, which communicates with the control center. The control mechanism can drive the electric door to open according to the control command given by the control center, thereby driving the guide plate to tilt and form an outflow angle different from the original angle. Among them, the original angle of the guide plate can represent the fixed value of the outflow angle of each auxiliary equipment set according to the rated flue gas flow during the boiler construction period.

[0067] Specifically, the guide plate control module can control the electric adjustment angle in a PID proportional integral differential control manner.

[0068] based on Figure 1 The system architecture shown, Figure 2 A schematic diagram of a flow chart showing a method for controlling a flow guide plate of a deacidification reaction tower by a control center provided in an embodiment of the present application is shown, referring to Figure 2 , the process may include:

[0069] Step S110, obtaining the flue gas flow rate measured by the flue gas flow velocity measuring instrument at the induced draft fan outlet pipe section, and calculating the flue gas flow rate change rate based on the flue gas flow rate.

[0070] Specifically, the adjustment angle of the guide plate can be calculated using the following formula:

[0071]

[0072] in, is the adjustment angle of the guide plate, is the original angle of the guide plate, is the preset rated flue gas flow rate, is the flue gas flow rate.

[0073] Step S120: When the smoke flow rate is greater than the preset rated smoke flow rate, the adjustment angle of the guide plate is calculated according to the smoke flow rate, and the adjustment speed of the guide plate from the current angle to the adjustment angle is calculated according to the smoke flow rate change rate.

[0074] It can be understood that since the radius R of the induced draft fan outlet pipe section is fixed, the flue gas flow rate and the flue gas flow rate are positively correlated. Therefore, when the flue gas flow rate is greater than the preset rated flue gas flow rate, it can be indicated that the flue gas flow rate exceeds the normal flow rate, and the time the flue gas stays in the deacidification reaction tower will be shortened. The flue gas may not be fully deacidified in the deacidification tower. Therefore, it is necessary to adjust the outlet angle of the guide plate to extend the time the flue gas stays in the deacidification tower.

[0075] In order to make the guide plate more adaptable to changes in airflow velocity during the adjustment process, the adjustment speed can be calculated and matched with the flue gas flow rate change rate, so that the faster the flue gas flow rate changes, the faster the adjustment speed of the guide plate, and the slower the adjustment speed of the guide plate when the flue gas flow rate changes slowly.

[0076] Step S130, driving the guide plate control module to adjust the outflow angle of the guide plate by adjusting the speed and the angle.

[0077] The deflector control method of the deacidification reaction tower provided in this embodiment obtains the flue gas flow rate measured by the flue gas velocity measuring instrument at the outlet pipe section of the induced draft fan, and calculates the flue gas flow rate change rate based on the flue gas flow rate. When the flue gas flow rate is greater than the preset rated flue gas flow rate, the adjustment angle of the deflector is calculated according to the flue gas flow rate, and the adjustment speed of the deflector from the current angle to the adjustment angle is calculated according to the flue gas flow rate change rate, and the deflector control module is driven to adjust the outflow angle of the deflector with the adjustment speed and the adjustment angle. It can be seen that the deflector can be regulated according to the real-time flue gas flow rate and the flue gas flow rate change rate, so that the flue gas has enough residence time in the reaction tower, ensuring the efficient operation of the deacidification reaction in the reaction tower and reducing material waste.

[0078] Considering that the outflow angle does not need to be adjusted under normal circumstances within the rated flue gas flow rate, but there may be a sharp increase in the flue gas flow rate, it is possible to leave room for strain for the condition of a sudden increase in the flue gas flow rate. Based on this, the flow guide plate control method of the deacidification reaction tower provided in the present application may also include:

[0079] When the smoke flow rate is not greater than the preset rated smoke flow rate, the outflow angle of the guide plate is increased.

[0080] It is understandable that when the flue gas flow rate does not exceed the preset rated flue gas flow rate, the flue gas flow rate is slowed down in advance by pre-increasing the outflow angle of the guide plate. When the flue gas flow rate suddenly increases, a large amount of inadequately deacidified flue gas will not flow out to the outside in a short period of time.

[0081] In some embodiments of the present application, the process of calculating the adjustment angle of the guide plate according to the smoke flow mentioned in the above embodiment is introduced, and the process may include:

[0082] The adjustment angle of the guide plate is calculated using the following formula:

[0083]

[0084] in, is the adjustment angle of the guide plate, is the original angle of the guide plate, is the preset rated flue gas flow rate, is the flue gas flow rate.

[0085] Specifically, the height difference between the center points of the inlet and outlet pipes of the reaction tower can be set as H, then:

[0086]

[0087] in, is the smoke density, is the outlet pipe radius of the induced draft fan, is the target angle to which the guide plate is to be adjusted, such as Figure 3 The difference between the original and target angles of the deflector is shown.

[0088] From the above formula, it can be concluded that the target angle to which the guide plate is to be adjusted is:

[0089]

[0090] Then the angle at which the guide plate needs to be adjusted is:

[0091] .

[0092] In some embodiments of the present application, the process of calculating the smoke flow rate change rate based on the smoke flow rate mentioned in the above embodiment is introduced, and the process may include:

[0093] The flue gas flow rate change rate is calculated using the following formula:

[0094]

[0095] in, is the flue gas flow rate change rate, is the flue gas flow rate, is the flue gas flow rate in the previous period.

[0096] In some embodiments of the present application, in order to enhance the reliability of the deflector control module, the deflector control module mentioned in the above embodiments may further include a monitoring submodule.

[0097] The monitoring submodule can be used to monitor the real-time outflow angle of the guide plate, and feed back the real-time outflow angle information to the control center for tracking and control by the control center, so as to make the entire guide plate control process more reliable.

[0098] Specifically, the control center can calculate the target angle of the guide plate after control, which can be calculated by the following formula:

[0099]

[0100] in, is the target angle of the guide plate after adjustment, is the original angle of the guide plate, is the preset rated flue gas flow rate, is the flue gas flow rate.

[0101] Furthermore, when the difference between the real-time outflow angle and the target angle is greater than a preset angle threshold, an alarm is issued to prompt the staff to inspect the guide plate and / or the guide plate control module.

[0102] It can be understood that if a large difference is detected between the calculated value and the actual monitoring value, it may indicate that the control of the guide plate and / or the guide plate control module is unreliable. In this case, an alarm may be issued to prompt the staff to inspect the guide plate and / or the guide plate control module to ensure the reliability of the guide plate control module.

[0103] The following is a description of the device for realizing guide plate regulation of a deacidification reaction tower provided in an embodiment of the present application. The device for realizing guide plate regulation of a deacidification reaction tower described below and the method for realizing guide plate regulation of a deacidification reaction tower described above can be referenced to each other.

[0104] See also Figure 4 , Figure 4 This is a schematic diagram of the structure of a device for realizing the control of the guide plate of a deacidification reaction tower disclosed in an embodiment of the present application.

[0105] like Figure 4 As shown, the device may include:

[0106] A smoke flow rate change rate calculation unit 11 is used to obtain the smoke flow rate measured by the smoke flow velocity measuring instrument at the exhaust fan outlet pipe section, and calculate the smoke flow rate change rate based on the smoke flow rate;

[0107] An adjustment angle calculation unit 12 is used to calculate the adjustment angle of the guide plate according to the smoke flow rate when the smoke flow rate is greater than a preset rated smoke flow rate;

[0108] An adjustment speed calculation unit 13, used for calculating an adjustment speed of the guide plate from a current angle to an adjustment angle according to the smoke flow rate change rate;

[0109] The regulating drive unit 14 is used to drive the guide plate control module to regulate the outflow angle of the guide plate at the adjustment speed and the adjustment angle.

[0110] Optionally, the device further comprises:

[0111] The outflow angle increasing unit is used to increase the outflow angle of the guide plate when the smoke flow rate is not greater than the preset rated smoke flow rate.

[0112] Optionally, the adjustment angle calculation unit includes:

[0113] The adjustment angle calculation subunit is used to calculate the adjustment angle of the guide plate using the following formula:

[0114]

[0115] in, is the adjustment angle of the guide plate, is the original angle of the guide plate, is the preset rated flue gas flow rate, is the flue gas flow rate.

[0116] Optionally, the smoke flow rate change rate calculation unit includes:

[0117] The flue gas flow rate measured by the flue gas velocity measuring instrument at the outlet pipe section of the induced draft fan is obtained, and the flue gas flow rate change rate is calculated using the following formula:

[0118]

[0119] in, is the flue gas flow rate change rate, is the flue gas flow rate, is the flue gas flow rate in the previous period.

[0120] Optionally, the guide plate control module includes a monitoring submodule, and the monitoring submodule is used to monitor the real-time outflow angle of the guide plate;

[0121] The device also includes:

[0122] The target angle determination unit is used to determine the target angle of the guide plate after adjustment using the following formula:

[0123]

[0124] in, is the target angle of the guide plate after adjustment, is the original angle of the guide plate, is the preset rated flue gas flow rate, is the flue gas flow rate;

[0125] The alarm unit is used to give an alarm when the difference between the real-time outflow angle and the target angle is greater than a preset angle threshold, so as to prompt the staff to inspect the guide plate and / or the guide plate control module.

[0126] The device for controlling the guide plate of the deacidification reaction tower provided in the embodiment of the present application can be applied to the equipment for controlling the guide plate of the deacidification reaction tower, such as the control center of the automatic control system. Figure 5 The hardware structure diagram of the device for controlling the guide plate of the deacidification reaction tower is shown, referring to Figure 5 , the hardware structure of the device for controlling the guide plate of the deacidification reaction tower may include: at least one processor 1, at least one communication interface 2, at least one memory 3 and at least one communication bus 4;

[0127] In the embodiment of the present application, the number of the processor 1, the communication interface 2, the memory 3, and the communication bus 4 is at least one, and the processor 1, the communication interface 2, and the memory 3 communicate with each other through the communication bus 4;

[0128] The processor 1 may be a central processing unit CPU, or an application-specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present invention, etc.;

[0129] The memory 3 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), etc., such as at least one disk memory;

[0130] The memory stores a program, and the processor can call the program stored in the memory, wherein the program is used to:

[0131] Obtaining the flue gas flow rate measured by the flue gas velocity measuring instrument at the outlet pipe section of the induced draft fan, and calculating the flue gas flow rate change rate based on the flue gas flow rate;

[0132] When the smoke flow rate is greater than the preset rated smoke flow rate, the adjustment angle of the guide plate is calculated according to the smoke flow rate, and the adjustment speed of the guide plate from the current angle to the adjustment angle is calculated according to the smoke flow rate change rate;

[0133] The guide plate control module is driven to adjust the outflow angle of the guide plate with the adjustment speed and the adjustment angle.

[0134] Optionally, the detailed functions and extended functions of the program may refer to the above description.

[0135] The embodiment of the present application further provides a storage medium, which may store a program suitable for execution by a processor, wherein the program is used to:

[0136] Obtaining the flue gas flow rate measured by the flue gas velocity measuring instrument at the outlet pipe section of the induced draft fan, and calculating the flue gas flow rate change rate based on the flue gas flow rate;

[0137] When the smoke flow rate is greater than the preset rated smoke flow rate, the adjustment angle of the guide plate is calculated according to the smoke flow rate, and the adjustment speed of the guide plate from the current angle to the adjustment angle is calculated according to the smoke flow rate change rate;

[0138] The guide plate control module is driven to adjust the outflow angle of the guide plate with the adjustment speed and the adjustment angle.

[0139] Optionally, the detailed functions and extended functions of the program may refer to the above description.

[0140] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0141] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can refer to each other.

[0142] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for controlling a guide plate of a deacidification reaction tower, characterized in that: The control center is applied to an automatic control system, wherein the automatic control system further comprises a flue gas velocity measuring instrument and a guide plate control module, wherein the guide plate control module is used to control the outflow angle of the guide plate; The method includes: Obtaining the flue gas flow rate measured by the flue gas velocity measuring instrument at the outlet pipe section of the induced draft fan, and calculating the flue gas flow rate change rate based on the flue gas flow rate; When the smoke flow rate is greater than the preset rated smoke flow rate, the adjustment angle of the guide plate is calculated according to the smoke flow rate, and the adjustment speed of the guide plate from the current angle to the adjustment angle is calculated according to the smoke flow rate change rate; The guide plate control module is driven to adjust the outflow angle of the guide plate with the adjustment speed and the adjustment angle.

2. The method according to claim 1, characterized in that Also includes: When the smoke flow rate is not greater than the preset rated smoke flow rate, the outflow angle of the guide plate is increased.

3. The method according to claim 1, characterized in that Calculating the adjustment angle of the guide plate according to the smoke flow rate includes: The adjustment angle of the guide plate is calculated using the following formula: in, is the adjustment angle of the guide plate, is the original angle of the guide plate, is the preset rated flue gas flow rate, is the flue gas flow rate.

4. The method according to claim 1, characterized in that Calculating the flue gas flow rate change rate based on the flue gas flow rate includes: The flue gas flow rate change rate is calculated using the following formula: in, is the flue gas flow rate change rate, is the flue gas flow rate, is the flue gas flow rate in the previous period.

5. The method according to any one of claims 1 to 4, characterized in that: The deflector control module includes a monitoring submodule, and the monitoring submodule is used to monitor the real-time outflow angle of the deflector; The method further includes: The target angle of the guide plate after adjustment is determined using the following formula: in, is the target angle of the guide plate after adjustment, is the original angle of the guide plate, is the preset rated flue gas flow rate, is the flue gas flow rate; When the difference between the real-time outflow angle and the target angle is greater than a preset angle threshold, an alarm is issued to prompt the staff to inspect the guide plate and / or the guide plate control module.

6. A guide plate control device for a deacidification reaction tower, characterized in that: The control center is applied to an automatic control system, wherein the automatic control system further comprises a flue gas velocity measuring instrument and a guide plate control module, wherein the guide plate control module is used to control the outflow angle of the guide plate; The device includes: a smoke flow rate change rate calculation unit, used to obtain the smoke flow rate measured by the smoke flow velocity measuring instrument at the induced draft fan outlet pipe section, and calculate the smoke flow rate change rate based on the smoke flow rate; an adjustment angle calculation unit, configured to calculate an adjustment angle of the guide plate according to the smoke flow rate when the smoke flow rate is greater than a preset rated smoke flow rate; An adjustment speed calculation unit, used for calculating an adjustment speed of the guide plate from a current angle to the adjustment angle according to the smoke flow rate change rate; The regulating drive unit is used to drive the guide plate control module to regulate the outflow angle of the guide plate at the adjustment speed and the adjustment angle.

7. The device according to claim 6, characterized in that Also includes: The outflow angle increasing unit is used to increase the outflow angle of the guide plate when the smoke flow rate is not greater than the preset rated smoke flow rate.

8. The device according to claim 6, characterized in that The adjustment angle calculation unit comprises: The adjustment angle calculation subunit is used to calculate the adjustment angle of the guide plate using the following formula: in, is the adjustment angle of the guide plate, is the original angle of the guide plate, is the preset rated flue gas flow rate, is the flue gas flow rate.

9. A guide plate control device for a deacidification reaction tower, characterized in that: including memory and processor; The memory is used to store programs; The processor is used to execute the program to implement each step of the guide plate control method for the deacidification reaction tower as described in any one of claims 1 to 5.

10. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by the processor, each step of the guide plate control method for the deacidification reaction tower as described in claims 1-5 is implemented.

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