A data processing method and a flue gas desulfurization system

Abstract

This invention discloses a data processing method and a flue gas desulfurization system, applied to a flue gas desulfurization system. The method includes: acquiring the average weight of a target material over a first preset time period; calculating the weight change rate of the target material based on the average weight; and determining the feeding speed of the target material in the flue gas desulfurization system based on the weight change rate and the current feeding and discharging status of the flue gas desulfurization system. This invention accurately determines the feeding speed of the material by acquiring the average weight and change rate of the target material in real time over a preset time period, combined with the operating status of the flue gas desulfurization system. This method solves the problem of weight data fluctuations caused by environmental vibrations and changes in equipment operating status, improves the accuracy of feeding flow calculation, and ensures the continuity and efficiency of the desulfurization process by accurately monitoring the feeding amount of quicklime, while avoiding reduced desulfurization efficiency and increased operating costs due to inaccurate data.

Description

Technical Field

[0001] This invention belongs to the field of flue gas desulfurization technology, and relates to a data processing method and a flue gas desulfurization system. Background Technology

[0002] In the field of flue gas desulfurization, quicklime (calcium hydroxide) is widely used as a desulfurizing agent due to its high efficiency in absorbing sulfur oxides. An effective desulfurization process not only requires a continuous supply of quicklime, but also precise control and monitoring of its feed flow rate to ensure desulfurization efficiency and economic operation. However, in practice, this requirement faces technical and environmental challenges.

[0003] First, the storage and conveying of quicklime typically takes place in small weighing silos, which are highly sensitive to vibrations in industrial environments. Due to these vibrations, the weighing data fluctuates significantly, making it impossible to accurately read weight changes. This frequent weight variation prevents traditional flow calculation methods from consistently reflecting the actual feed rate, thus affecting the control accuracy of the desulfurization process.

[0004] Secondly, the desulfurization system requires a continuous supply of quicklime to ensure the continuity and efficiency of flue gas treatment. When the amount of quicklime in the weighing bin falls below the preset value, the system automatically initiates a replenishment procedure. However, during the replenishment process, the data originally used to measure the discharge flow rate becomes negative due to the increased weight, further increasing the complexity of flow rate calculation.

[0005] In summary, existing methods for calculating quicklime feed rate are significantly affected by environmental and equipment operating conditions, and cannot provide accurate real-time data. This not only hinders the precise management of the desulfurization process, but may also lead to reduced desulfurization efficiency and increased operating costs. Summary of the Invention

[0006] This invention provides a data processing method and a flue gas desulfurization system. By obtaining real-time average values ​​and calculating the rate of change of the weight in the weighing bin, the feeding speed of the target material in the flue gas desulfurization system is determined, thus solving the problem of inaccurate quicklime feeding flow rate caused by environmental and equipment factors.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A data processing method applied to a flue gas desulfurization system includes:

[0009] Obtain the average weight of the target material within a first preset time period;

[0010] The weight change rate of the target material is calculated based on the average weight.

[0011] Based on the weight change rate and the current feeding and discharging status of the flue gas desulfurization system, the feeding rate of the target material in the flue gas desulfurization system is determined.

[0012] Furthermore, the flue gas desulfurization system includes a weighing hopper and a discharge device. Based on the weight change rate and the current feeding and discharging operation of the flue gas desulfurization system, the discharge rate of the target material in the flue gas desulfurization system is determined, including:

[0013] Determine whether the rate of change of the target material in the weighing bin within a first preset time period is positive;

[0014] If the rate of change of the target material in the weighing bin is positive within the first preset time period;

[0015] Then determine whether the flue gas desulfurization system is in the feeding state;

[0016] If the weighing bin is not being filled, determine whether the discharging equipment is running;

[0017] If the discharge equipment is running, the weight change rate is defined as the discharge speed.

[0018] Furthermore, before determining whether the flue gas desulfurization system is in the feeding state, the process also includes:

[0019] If the weight change rate of the target material in the weighing bin is negative within the first preset time period, then the weight change rate within the second preset time period is obtained, wherein the second preset time period is the time period preceding the first preset time period.

[0020] Furthermore, obtaining the weight change rate over the second preset time period includes:

[0021] If the weight change rate of the target material in the weighing bin is negative within the second preset time period, then the weight change rate within the third preset time period is obtained until the obtained weight change rate is positive, wherein the third preset time period is the time period preceding the second preset time period.

[0022] Furthermore, the method also includes:

[0023] If the target weight change rate is negative within the first preset time period, the flue gas desulfurization system is controlled to stop feeding.

[0024] Furthermore, after determining whether the flue gas desulfurization system is in a feeding state, the process further includes:

[0025] If the weighing bin is being filled, the weight change rate within a fourth preset time period is obtained, wherein the fourth preset time period is the time period preceding the first preset time period;

[0026] The weight change rate within a fourth preset time period is defined as the feeding speed.

[0027] Furthermore, after determining whether the discharging equipment is running, the process also includes:

[0028] If the discharge equipment is not running, the weight change rate is set to 0.

[0029] A flue gas desulfurization system includes a target material silo, a feeding device, a weighing silo, a discharging device, and a data processing module, wherein:

[0030] The target material silo is used to store quicklime, and the quicklime is transported to the weighing silo via the feeding device;

[0031] The feeding device is used to transport the quicklime from the target material silo to the weighing silo;

[0032] The discharge device is used to discharge the quicklime from the weighing bin;

[0033] The data processing module is used to execute the data processing method to calculate the feeding speed of quicklime in the weighing bin.

[0034] Furthermore, the weighing chamber is equipped with several weighing sensors, which collect weight data.

[0035] Furthermore, the feeding device includes a variable frequency screw conveyor, which adjusts the conveying speed in real time according to the first feeding speed.

[0036] The beneficial effects of this invention are as follows: By acquiring the average weight and rate of change of the target material in real time within a preset time period, and combining this with the operating status of the flue gas desulfurization system, the material feeding speed can be accurately determined. This method solves the problem of weight data fluctuation caused by environmental vibration and changes in equipment operating status, and improves the calculation accuracy of the feeding flow rate. By accurately monitoring the feeding amount of quicklime, this invention can ensure the continuity and efficiency of the desulfurization process, while avoiding the reduction in desulfurization efficiency and the increase in operating costs caused by inaccurate data. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the present invention.

[0038] Figure 2 This is a schematic diagram of the process of this invention.

[0039] Figure 3 This is a schematic diagram of the flue gas desulfurization system of the present invention.

[0040] The following are the annotations in the attached diagram: 1-Target material bin; 2-Weighing bin; 3-Binding dust collector; 4-Level gauge; 5-Binding wall vibrator; 6-Pneumatic slide gate valve; 7-Rotary airlock valve; 8-Agitator motor; 9-Variable frequency screw conveyor; 10-Discharge rotary valve; 11-Roots blower; 12-Weighing sensor. Detailed Implementation

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects and not to describe a particular order.

[0042] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0044] This invention provides an appendix Figures 1-3 In this embodiment of the invention, a data processing method is applied to a flue gas desulfurization system, comprising:

[0045] S1. Obtain the average weight of the target material within a first preset time period;

[0046] This step is to obtain a baseline data point, namely the average weight of the material within a specific time period (first preset time). This average value helps to reduce data fluctuations caused by factors such as vibration in the industrial environment, thereby providing a relatively stable weight value.

[0047] S2. Calculate the weight change rate of the target material based on the average weight;

[0048] After obtaining the average weight of the material, the system calculates the rate of change of the material weight over the subsequent time period. This rate of change reflects the rate at which the material flows into or out of the weighing bin and is a key parameter for determining the feeding speed.

[0049] Since the current weight in the weighing bin is a continuously decreasing value during the material discharge process, the calculated change value is negative. At the same time, it is necessary to convert the calculated weight change rate of the weighing bin within the first preset time period. Therefore, the final calculation result needs to be multiplied by -3600 to convert the unit kg / s to kg / h.

[0050] S3. Based on the weight change rate and the current feeding and discharging operation of the flue gas desulfurization system, determine the feeding rate of the target material in the flue gas desulfurization system;

[0051] The present invention can use a distributed control system to execute the above steps. The flue gas desulfurization system may encounter different operating conditions during operation, such as feeding, discharging, or both simultaneously. By considering the current feeding and discharging status, the influence of inaccurate data under abnormal conditions, i.e., interference values, can be eliminated. Based on the final feeding speed, the flue gas desulfurization system can adjust the feeding speed more accurately to meet the needs under different conditions.

[0052] The flue gas desulfurization system includes a weighing hopper and a discharge device. Based on the weight change rate and the current feeding and discharging status of the flue gas desulfurization system, the discharge rate of the target material within the flue gas desulfurization system is determined, including:

[0053] Determine whether the rate of change of the target material in the weighing bin within a first preset time period is positive;

[0054] S31. If the rate of change of the target material in the weighing bin is positive within the first preset time period;

[0055] Then determine whether the flue gas desulfurization system is in the feeding state;

[0056] S32. If the weighing bin is not being filled, determine whether the discharging equipment is running;

[0057] If the discharge equipment is running, the weight change rate is defined as the discharge speed.

[0058] Specifically, in step S31, because the lime weighing silo has a small tonnage, it is easily affected by vibration in the working environment, which causes large fluctuations in the reading. During the discharge process, the weight change rate of the weighing silo can only be positive. If interference errors caused by environmental factors such as vibration occur, i.e., negative values ​​appear, they need to be eliminated. Furthermore, based on the positive change rate of the weighing silo, it is necessary to determine whether the flue gas desulfurization system is in the feeding state. If the weighing silo is in the state of both feeding and discharging, when the discharge speed of the weighing silo is greater than the feeding speed, the change rate of the weighing silo will also be positive. However, in this state, the weight change rate of the weighing silo cannot reflect the correct discharge speed. Therefore, it is necessary to judge and eliminate interference to ensure that the calculation of the weight change rate only reflects the discharge process.

[0059] In step S32, interference from the feeding status of the flue gas desulfurization system is eliminated, and only the discharge equipment is running. It is confirmed that the weight change is caused by the discharge of quicklime. The weight change rate calculated at this time is the effective feeding speed. Other factors that may cause weight changes, such as feeding or equipment failure, can be eliminated, thereby ensuring the accuracy of the feeding speed.

[0060] Before determining whether the flue gas desulfurization system is in the feeding state, the following steps are also included:

[0061] S33. If the weight change rate of the target material in the weighing bin is negative within the first preset time period, then obtain the weight change rate within the second preset time period, wherein the second preset time period is the time period preceding the first preset time period.

[0062] Specifically, the second preset time is earlier than the first preset time. This can be understood as follows: if the current calculation is the xth calculation, then the calculation for the second preset time is the (x-1)th calculation. If there is an available and effective feeding speed within the second preset time, it is used to replace the current value. By obtaining the weight change rate of the previous time period (the second preset time), the system can more accurately determine the actual flow of materials. This method helps to eliminate data errors caused by short-term interference, thereby providing a more accurate weight change rate.

[0063] The step of obtaining the weight change rate over a second preset time period includes:

[0064] S331. If the weight change rate of the target material in the weighing bin is negative within the second preset time period, then the weight change rate within the third preset time period is obtained until the obtained weight change rate is positive, wherein the third preset time period is the time period preceding the second preset time period.

[0065] Specifically, if there is no effective feeding speed within the second preset time, it is necessary to repeatedly obtain the third preset time, which can be the previous time period before the second preset time, until conditions such as a positive weight change rate and no feeding in the weighing bin and operation of the discharge equipment are met. Continuous monitoring and adjustment are carried out until an effective feeding speed can be obtained. This mechanism ensures that even in the presence of interference, a reliable result can be obtained through continuous calculation and adjustment, thus improving the robustness of the system. Even when facing unstable external conditions, the system can make macroscopic adjustments based on the feeding speed within the previous preset time to regulate the overall desulfurization process efficiency.

[0066] The method further includes:

[0067] S34. If the target weight change rate is negative within the first preset time, control the flue gas desulfurization system to stop feeding.

[0068] Specifically, when calculating the feeding speed of the weighing bin, if this is the first calculation or if there was no effective feeding speed in the previous time period, it is necessary to exclude factors that may affect the calculation from the flue gas desulfurization system. That is, exclude the situation where the continuous feeding of the flue gas desulfurization system makes the target weight change rate always negative, making it impossible to calculate the effective weight change rate. After controlling the flue gas desulfurization system to stop feeding, proceed with the subsequent steps of calculating the feeding speed.

[0069] After determining whether the flue gas desulfurization system is in a feeding state, the method further includes:

[0070] S35. If the weighing bin is being filled, obtain the weight change rate within a fourth preset time period, wherein the fourth preset time period is the time period preceding the first preset time period;

[0071] The weight change rate within a fourth preset time period is defined as the feeding speed.

[0072] Specifically, when the flue gas desulfurization system is in the feeding state, if the weighing hopper is both feeding and discharging, and the discharge rate of the weighing hopper is greater than the feeding rate, the weight change rate of the weighing hopper will also be positive. However, in this state, the weight change rate of the weighing hopper cannot reflect the correct discharging rate. After confirming that the weighing hopper is feeding, it is necessary to obtain the weight change rate within the fourth preset time period to replace the existing weight change rate, that is, the weight change rate of the previous time period of the first preset time period. This ensures that even in the event of interference, a reliable result can be obtained through continuous calculation and adjustment, thus improving the robustness of the system. Even when facing unstable external conditions, the system can make macroscopic adjustments based on the discharging rate within the previous preset time period to regulate the overall desulfurization process efficiency.

[0073] More specifically, step S33 mentions a second preset time, and step S35 mentions a fourth preset time. The second preset time is used when the weight change rate of the weighing bin is negative. Specifically, if the weight change rate is negative within the first preset time, the system will obtain the weight change rate within the second preset time to eliminate short-term interference or errors. The second preset time, as the time period preceding the first preset time, provides an additional data point to help determine the actual flow of materials in the weighing bin. Its purpose is to improve the accuracy and reliability of the weight change rate calculation by comparing data from different time periods in dynamic and potentially unstable industrial environments. The fourth preset time is used after determining whether the flue gas desulfurization system is in a feeding state. Specifically, if the weighing hopper is being fed, the system will obtain the weight change rate within the fourth preset time to determine the material flow in the weighing hopper before feeding. As the time period preceding the first preset time, the fourth preset time helps the system understand the material flow before the current feeding operation begins, thereby more accurately calculating the discharge rate. Its purpose is to eliminate the influence of feeding on the discharge rate calculation by analyzing the data before feeding in complex situations where feeding and discharging occur simultaneously. Although both the second and fourth preset times are used to analyze the material flow in the weighing hopper, they play different roles in the data processing flow and are designed for different operating conditions and objectives. This means that they are not directly related but rather independently serve to improve the overall performance and accuracy of the system.

[0074] After determining whether the discharging equipment is running, the process also includes:

[0075] S36. If the discharge equipment is not in operation, the weight change rate is set to 0.

[0076] Specifically, when the discharging equipment is not running, the weight change in the weighing bin should not be calculated as a valid discharge rate because no material is being discharged. Calculating a non-zero discharge rate under these conditions would result in an erroneous reading, potentially due to weight changes caused by feeding, equipment vibration, environmental disturbances, or other factors. To eliminate this error, step S36 explicitly states that if the discharging equipment is not running, the first discharge rate should be set to 0. This ensures that the calculated discharge rate is only valid when the discharging equipment is actually running, thereby improving the measurement accuracy and reliability of the entire system. This approach helps avoid incorrectly recording or using discharge rate data when the discharging equipment is stopped, which is crucial for maintaining data integrity and the correct operation of the system.

[0077] A flue gas desulfurization system includes a target material silo 1, a feeding device, a weighing silo 2, a discharging device, and a data processing module, wherein:

[0078] The target material silo 1 is used to store quicklime, and the quicklime is transported to the weighing silo 2 through the feeding device;

[0079] The feeding device is used to transport the quicklime from the target material silo 1 to the weighing silo 2;

[0080] The discharge device is used to discharge the quicklime from the weighing bin 2;

[0081] The data processing module is used to execute the data processing method to calculate the feeding speed of quicklime in the weighing bin 1.

[0082] The feeding equipment includes a silo neck dust collector 3, a level gauge 4, a silo wall vibrator 5, a pneumatic slide gate valve 6, and a rotary airlock valve 7; the discharging equipment includes a mixing motor 8, a variable frequency screw conveyor 9, a discharge rotary valve 10, and a Roots blower 11. Specifically, quicklime powder is pneumatically conveyed to the target material silo 1 via a tanker truck. During the process of conveying the quicklime powder from the powder silo to the weighing silo 2, it passes sequentially through the silo wall vibrator 5, the pneumatic slide gate valve 6, and the rotary airlock valve 7. Specifically, the weighing silo 2 is used to store quicklime and simultaneously measure the weight of the quicklime to be discharged. The weighing silo 2, in conjunction with the weighing sensor 12, collects the current weight data.

[0083] The bin wall vibrator 5 is used to address issues with the smooth feeding of quicklime. Through its built-in vibration mechanism, the vibrator generates mechanical vibration that is directly transmitted to the bin wall, acting on the quicklime powder. This vibration energy loosens and disperses the quicklime powder adhering to the bin wall or that has hardened, reducing the adhesion between powder particles, lowering the bulk density, and making the powder more fluid. By periodically or continuously operating the vibrator, the loose state of the quicklime powder is maintained, thereby improving the smoothness of the feeding process. The pneumatic slide valve 6 remains closed when no feeding is required, with the slide valve tightly sealing the valve. The channel effectively blocks the flow of quicklime powder, ensuring that weighing silo 2 or other equipment can remain sealed and static during non-feeding periods, preventing material leakage or excessive discharge. When the system needs to be fed, the slide gate valve is activated by the pneumatic control system. The control signal activates the pneumatic actuator (usually a cylinder), driving the slide gate to move, thereby opening the channel. Quicklime powder can then flow from the upstream powder silo into the downstream weighing silo 2. The rotary airlock valve 7 controls the flow of material through its internal rotating device (such as an impeller). When the rotating device rotates, it carries and pushes the quicklime powder from the feed port to the discharge port to the weighing silo 2.

[0084] In this process, quicklime powder easily absorbs moisture and clumps when stored in weighing bin 2 and in a static state. The stirring motor 8, through continuous operation, keeps the quicklime powder in the bin in a dynamic state, reducing moisture accumulation and close contact between powder particles, thus lowering the likelihood of clumping. Continuous mechanical agitation helps break up existing clumps, ensuring powder uniformity and flowability. The rotation of the stirring motor 8 continuously agitates and mixes the quicklime powder, contributing to uniform powder distribution and promoting smoother flow characteristics. This continuous physical disturbance reduces friction and adhesion between the powder and the bin walls, making powder discharge smoother and improving efficiency. When the screw conveyor starts, its internal screw shaft rotates, pushing the quicklime powder along the casing towards the discharge port. The variable frequency screw conveyor... Machine 9 adjusts the conveying speed and frequency in real time according to the feeding speed to ensure that the amount of desulfurizing agent added is within an appropriate range. Specifically, by adjusting the frequency converter settings, the rotation speed of the screw shaft can be increased or decreased. Increasing the rotation speed can increase the discharge speed, which is suitable for situations requiring a large amount of desulfurizing agent. Decreasing the rotation speed can reduce the discharge speed, which is suitable for fine adjustment or situations with a light system load. The quicklime passes through the ash conveying pipe of the feeding rotary valve 10 via the frequency conversion conveying mechanism. The high-pressure airflow from the Roots blower 11 then enters the ash conveying pipe, blowing the quicklime powder from the weighing bin 2 or storage bin into the flue system. This process ensures the uniform distribution and stable conveying of the powder. Because the airflow generated by the Roots blower 11 has high pressure and stability, it can overcome the resistance in the pipeline and ensure that the quicklime powder reaches its destination smoothly.

[0085] The weighing chamber 2 is equipped with several weighing sensors 12, which collect weight data. By installing multiple weighing sensors 12 on the weighing chamber 2, the weight change of quicklime powder can be monitored in real time and accurately. Each sensor works independently and can provide independent readings, thereby eliminating the risk of single-point failure and improving the reliability of the overall system. This multi-point measurement method makes the data more accurate and stable, reducing reading fluctuations caused by environmental vibrations and other factors. The collected weight data is transmitted to a distributed control system (DCS) for further processing and analysis. Through real-time monitoring and processing of this data, the system can dynamically adjust the feeding speed and feeding frequency to ensure accurate delivery and metering of quicklime powder.

[0086] Furthermore, throughout the entire conveying process, it is necessary to set the high and low values ​​for weighing bin 2, and to open the pneumatic slide gate valve 6 and the rotary airlock valve 7 to replenish quicklime powder. When weighing bin 2 reaches the high value, the feeding needs to be stopped, and this cycle repeats. The variable frequency screw conveyor 9 needs to adjust its frequency in real time according to the feeding speed of weighing bin 2 to ensure that the amount of desulfurizing agent added is within an appropriate range. At the same time, during the feeding process, the bin wall vibrator 5 and the fluidizing valve need to be put into operation and run intermittently according to the set time to maintain the fluidity of the powder.

[0087] This invention can be used in a wide range of general-purpose or special-purpose computer system environments or configurations.

[0088] Examples include: personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, and distributed computing environments that include any of the above systems or devices.

[0089] This invention can be described in the general context of computer-executable instructions that are executed by a computer, such as program modules.

[0090] Generally, program modules include routines, programs, objects, components, data structures, etc., that perform specific tasks or implement specific abstract data types. This invention can also be practiced in distributed computing environments where tasks are performed by remote processing devices connected via communication networks.

[0091] In a distributed computing environment, program modules can reside on local and remote computer storage media, including storage devices.

[0092] Specifically, 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 instructing related hardware through computer-readable instructions. These computer-readable instructions can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above methods. The aforementioned storage medium can be a non-volatile storage medium such as a magnetic disk, optical disk, or read-only memory (ROM), or random access memory (RAM).

[0093] It should be understood that although the steps in the flowcharts in the accompanying drawings are shown sequentially as indicated by the arrows, these steps are not necessarily performed in the order indicated by the arrows. Unless otherwise expressly stated herein, there is no strict order in which these steps are performed, and they may be performed in other orders.

[0094] Moreover, at least some steps in the flowchart of the attached figure may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. Their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0095] Obviously, the embodiments described above are only some embodiments of the present invention, and not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the scope of the invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the present invention.

[0096] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, whether directly or indirectly applied to other related technical fields, are similarly within the scope of protection of this patent.

Claims

1. A data processing method applied to a flue gas desulfurization system, characterized in that, The method comprises: obtaining a weight average value of the target material within a first preset time; calculating a weight change rate of the target material according to the weight average value; determining a discharging speed of the target material in the flue gas desulfurization system according to the weight change rate and current feeding and discharging operation of the flue gas desulfurization system; wherein the flue gas desulfurization system comprises a weighing bin and a discharging device, and the determination of the discharging speed of the target material in the flue gas desulfurization system according to the weight change rate and current feeding and discharging operation of the flue gas desulfurization system comprises: determining whether the weight change rate of the target material in the weighing bin within the first preset time is positive; if the weight change rate of the target material in the weighing bin within the first preset time is positive; determining whether the flue gas desulfurization system is in a feeding state; if the weighing bin is not feeding, determining whether the discharging device is operating; if the discharging device is operating, defining the weight change rate as the discharging speed; wherein before determining whether the flue gas desulfurization system is in a feeding state, the method further comprises: if the weight change rate of the target material in the weighing bin within the first preset time is negative, obtaining a weight change rate within a second preset time, wherein the second preset time is a previous time period of the first preset time; wherein the obtaining of the weight change rate within the second preset time comprises: if the weight change rate of the target material in the weighing bin within the second preset time is negative, obtaining a weight change rate within a third preset time until the obtained weight change rate is positive, wherein the third preset time is a previous time period of the second preset time; wherein the method further comprises: if the weight change rate of the target material within the first preset time is negative, controlling the flue gas desulfurization system to stop feeding operation.

2. The data processing method of claim 1, wherein, after determining whether the flue gas desulfurization system is in a feeding state, the method further comprises: if the weighing bin is feeding, obtaining a weight change rate within a fourth preset time, wherein the fourth preset time is a previous time period of the first preset time; defining the weight change rate within the fourth preset time as the discharging speed.

3. The data processing method of claim 1, wherein, after determining whether the discharging device is operating, the method further comprises: if the discharging device is not operating, setting the weight change rate to 0.

4. A flue gas desulfurization system characterized by, The system comprises a target material bin, a feeding device, a weighing bin, a discharging device and a data processing module, wherein: the target material bin is used to store hydrated lime and deliver the hydrated lime to the weighing bin through the feeding device; the feeding device is used to deliver the hydrated lime in the target material bin to the weighing bin; the discharging device is used to discharge the hydrated lime in the weighing bin; the data processing module is used to execute the data processing method of any one of claims 1 to 3 to calculate the discharging speed of the hydrated lime in the weighing bin.

5. A flue gas desulphurization system according to claim 4, characterised in that The weighing bin is provided with a plurality of weighing sensors, and the weighing sensors collect weight data.

6. A flue gas desulphurization system according to claim 4, wherein The feeding device comprises a variable frequency screw conveyor, and the variable frequency screw conveyor adjusts the conveying speed in real time according to the discharging speed.

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