A temperature adaptive control method and device for phosphogypsum calcining furnace

Abstract

The present invention discloses a temperature adaptive control method and device for a phosphogypsum calcining furnace, and relates to the technical field of calcining furnace control. The method comprises: zoning the calcining furnace based on a predetermined zoning strategy; monitoring the first zone temperature through a first predetermined temperature sensor; obtaining a first real-time state based on a predetermined state monitoring strategy; correcting the first zone temperature with the analyzed first real-time state index as a correction coefficient to obtain a first effective zone temperature; when the first effective zone temperature does not meet a predetermined threshold, issuing an adaptive control instruction; based on the instruction, calling a predetermined control strategy, and adaptively controlling and adjusting the first burner. The method solves the technical problem of low calcining efficiency and unstable product quality due to uneven temperature distribution in the calcining furnace and inability to effectively cope with fluctuations in working conditions, so as to achieve the effect of ensuring the uniformity and stability of the temperature in the calcining furnace, improving calcining efficiency, and optimizing product quality by real-time monitoring of the temperature and state of each furnace zone, automatically correcting the temperature deviation, and improving the calcining efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of calcining furnace control, and in particular to a temperature adaptive control method and device for a phosphogypsum calcining furnace. Background Art

[0002] With the vigorous development of the building materials industry and the emphasis on the comprehensive utilization of phosphogypsum resources, the importance of phosphogypsum calcination technology as a key link in the production of high-quality building materials has become increasingly prominent. In the calcination and decomposition stage of phosphogypsum, temperature control is a crucial link, which is directly related to the quality and production efficiency of the product. However, with the continuous expansion of production scale and the increasing complexity of calcination process, the temperature control of phosphogypsum calcining furnace faces unprecedented challenges. Traditional temperature control methods for phosphogypsum calcining furnaces often rely on manual experience and offline detection data, and have significant problems such as low control accuracy, slow response speed, and insufficient stability. Especially in the critical stage of calcination and decomposition, the temperature needs to be precisely controlled under high temperature conditions of 800-1000 degrees to ensure that phosphogypsum is fully decomposed and the required products are generated. However, traditional methods are difficult to quickly adapt to fluctuations in process parameters, which can easily lead to large temperature fluctuations, unstable product quality, and even safety accidents. Summary of the invention

[0003] The present application provides a temperature adaptive control method and device for a phosphogypsum calcining furnace to solve the technical problems of low calcination efficiency and unstable product quality caused by uneven temperature distribution in the calcining furnace and inability to effectively cope with operating condition fluctuations. The application achieves the effect of ensuring the uniformity and stability of the temperature in the calcining furnace, improving the calcination efficiency and optimizing the product quality by real-time monitoring of the temperature and state of each furnace zone and automatically correcting the temperature deviation.

[0004] The present application provides a temperature adaptive control method for a phosphogypsum calcining furnace, the method comprising: reading a predetermined zoning strategy, and zoning the calcining furnace based on the predetermined zoning strategy to obtain a zoning result, the zoning result including multiple furnace zones; obtaining a first zone temperature of a first furnace zone by monitoring with a first predetermined temperature sensor, the first furnace zone refers to any one of the multiple furnace zones, and the first predetermined temperature sensor is arranged in the first furnace zone; reading a predetermined state monitoring strategy, and obtaining a first real-time state of the first furnace zone based on the predetermined state monitoring strategy; correcting the first zone temperature by using a first real-time state index obtained by analyzing the first real-time state as a correction coefficient to obtain a first effective zone temperature; when the first effective zone temperature does not meet the predetermined zone temperature threshold, issuing an adaptive control instruction; calling a predetermined control strategy based on the adaptive control instruction, and adaptively controlling and adjusting a first burner of the first furnace zone based on the predetermined control strategy.

[0005] The present application also provides a temperature adaptive control device for a phosphogypsum calcining furnace, comprising: a partition processing module, the partition processing module is used to read a predetermined partition strategy, and partition the calcining furnace based on the predetermined partition strategy to obtain a partition result, and the partition result includes multiple furnace zones; a temperature monitoring module, the temperature monitoring module is used to monitor a first zone temperature of a first furnace zone through a first predetermined temperature sensor, the first furnace zone refers to any one of the multiple furnace zones, and the first predetermined temperature sensor is arranged in the first furnace zone; a real-time state acquisition module, the real-time state acquisition module is used to read a predetermined state monitoring strategy, and obtain a first real-time state of the first furnace zone based on the predetermined state monitoring strategy; a temperature correction module, the temperature correction module is used to correct the first zone temperature by using a first real-time state index obtained by analyzing the first real-time state as a correction coefficient to obtain a first effective zone temperature; an adaptive control instruction issuing module, the adaptive control instruction issuing module is used to issue an adaptive control instruction when the first effective zone temperature does not meet the predetermined zone temperature threshold; an adaptive control adjustment module, the adaptive control adjustment module is used to call a predetermined control strategy based on the adaptive control instruction, and adaptively control and adjust the first burner of the first furnace zone based on the predetermined control strategy.

[0006] It is intended to use a temperature adaptive control method and device for a phosphogypsum calcining furnace proposed in the present application to read a predetermined zoning strategy, and partition the calcining furnace based on the predetermined zoning strategy to obtain a zoning result, wherein the zoning result includes multiple furnace zones; a first zone temperature of the first furnace zone is obtained by monitoring with a first predetermined temperature sensor, wherein the first furnace zone refers to any one of the multiple furnace zones, and the first predetermined temperature sensor is arranged in the first furnace zone; a predetermined state monitoring strategy is read, and a first real-time state of the first furnace zone is obtained based on the predetermined state monitoring strategy; the first zone temperature is corrected by using a first real-time state index obtained by analyzing the first real-time state as a correction coefficient to obtain a first effective zone temperature; when the first effective zone temperature does not meet the predetermined zone temperature threshold, an adaptive control instruction is issued; based on the adaptive control instruction, a predetermined control strategy is called up, and based on the predetermined control strategy, an adaptive control adjustment is performed on the first burner of the first furnace zone. Solve the technical problems of low calcination efficiency and unstable product quality due to uneven temperature distribution in the calcination furnace and inability to effectively cope with operating condition fluctuations. Real-time monitoring of the temperature and status of each furnace area can be achieved, and temperature deviations can be automatically corrected to ensure the uniformity and stability of the temperature in the calcination furnace, improve calcination efficiency, and optimize product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solution of the embodiment of the present disclosure, the accompanying drawings of the embodiment of the present disclosure will be briefly introduced below. A flow chart is used in the present application to illustrate the operations performed by the device according to the embodiment of the present application. It should be understood that the previous or following operations are not necessarily performed precisely in order. On the contrary, various steps can be processed in reverse order or simultaneously as needed. At the same time, other operations can also be added to these processes, or one or more operations can be removed from these processes.

[0008] Figure 1 A schematic flow chart of a temperature adaptive control method for a phosphogypsum calcining furnace provided in an embodiment of the present application;

[0009] Figure 2 A schematic diagram of the structure of a temperature adaptive control device for a phosphogypsum calcining furnace provided in an embodiment of the present application.

[0010] Explanation of the accompanying drawings: partition processing module 1, temperature monitoring module 2, real-time status acquisition module 3, temperature correction module 4, adaptive control instruction issuing module 5, adaptive control adjustment module 6. DETAILED DESCRIPTION

[0011] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0012] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. The described embodiments should not be regarded as limiting the present application. All other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0013] In the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict, and the terms "first\second" involved are merely to distinguish similar objects and do not represent a specific ordering of objects. The terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, device, product, or server that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or modules that are not clearly listed or inherent to these processes, methods, products, or devices. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of this application. The terms used herein are for the purpose of describing the embodiments of the present application only.

[0014] The present application embodiment provides a temperature adaptive control method for a phosphogypsum calcining furnace, such as Figure 1 As shown, the method includes:

[0015] A predetermined partitioning strategy is read, and a partitioning process is performed on the calcining furnace based on the predetermined partitioning strategy to obtain a partitioning result, wherein the partitioning result includes a plurality of furnace zones.

[0016] In the embodiment of the present application, before the decomposition stage of phosphogypsum calcination, the system terminal first reads the pre-set partition strategy, which is based on the design characteristics of the burner. Subsequently, the internal structure of the calciner is analyzed, including the shape, size, distribution of heating elements, gas flow channels, etc. of the furnace. This information is the basis for the partition scheme and helps to determine the number, location and size of the furnace area. After that, the calciner is divided into multiple furnace areas according to the predetermined partition strategy and the structural characteristics of the calciner. These furnace areas include preheating areas, calcining areas, cooling areas, etc., and each furnace area has its specific functions and operating requirements. For example, the preheating area is used to heat the material to the initial temperature required for calcination, the calcining area is the main area where the material undergoes chemical reaction, and the cooling area is used to quickly cool the calcined material to prevent overburning or deterioration. The results of the partition will directly affect the management of subsequent temperature control. After the partition is completed, the calciner is divided into multiple interrelated but relatively independent furnace areas to ensure that refined control and management can be achieved during the calcination process.

[0017] Furthermore, the present application provides a predetermined partitioning strategy, including:

[0018] A first effective range is acquired according to a first design feature of the first burner; and the predetermined partitioning strategy is obtained according to a first unit length set based on the first effective range.

[0019] Preferably, the system terminal determines the range in which the first burner can effectively act in the calcining furnace, i.e., the first range of action, based on the first design feature of the first burner, such as flame length, heat distribution, radiation range, etc. This range represents the area in the furnace that the heat of the burner can directly and significantly affect. Subsequently, based on this first range of action, the system terminal sets a first unit length. This unit length is an important basis for measuring and dividing the furnace area. It is a standardized length set based on the specific requirements of the burner range of action and the calcining process. Through this unit length, the internal space of the calcining furnace can be divided into equal or unequal intervals, thereby obtaining a plurality of furnace areas with clear boundaries. Afterwards, a partitioning scheme is set based on the first burner range of action and the first unit length, i.e., a predetermined partitioning strategy is set. This strategy provides a basis and guidance for subsequent partitioning processing, temperature monitoring and control, ensuring the uniformity of temperature distribution in the calcining furnace and the stability of the calcining process.

[0020] The first zone temperature of the first furnace zone is monitored by a first predetermined temperature sensor, the first furnace zone refers to any one furnace zone among the multiple furnace zones, and the first predetermined temperature sensor is arranged in the first furnace zone.

[0021] In one embodiment, since a high temperature environment is required in the decomposition stage to induce chemical reactions in raw materials (such as phosphogypsum, etc.), traditional temperature sensors are often unable to perform this task. The high temperature environment not only tests the durability and stability of the sensor, but also places extremely high demands on its measurement accuracy. In order to improve the measurement accuracy, the system terminal arranges a temperature sensor with high temperature resistance in the calcining furnace. After dividing multiple furnace zones, the system terminal randomly extracts a furnace zone from the multiple furnace zones as the first furnace zone, and uses the first predetermined temperature sensor arranged in the furnace zone to monitor the temperature in the furnace zone. This first predetermined temperature sensor has the characteristics of high temperature resistance, can work stably in a high temperature environment, and accurately measure and feedback the temperature of the first furnace zone, that is, the first zone temperature. Through this sensor, the system terminal obtains the temperature data of the first furnace zone in real time, and then accurately monitors and adjusts the decomposition process to ensure the stability of the calcination process and the reliability of product quality.

[0022] A predetermined state monitoring strategy is read, and a first real-time state of the first furnace zone is acquired based on the predetermined state monitoring strategy.

[0023] In one embodiment, the system terminal reads a preset state monitoring strategy. This strategy specifies the dimensions from which the states of each furnace zone in the calciner are monitored during the decomposition phase of the calciner, including but not limited to the calciner temperature, the burner temperature, etc. Subsequently, according to this preset strategy, the system terminal performs real-time state monitoring on the first furnace zone, and reads the corresponding data from the sensor installed in the first furnace zone to obtain the first real-time state of the first furnace zone. These data reflect the current real-time state of the first furnace zone, and provide a key basis for accurately controlling the decomposition process of calcination.

[0024] Furthermore, the present application provides that the predetermined state monitoring strategy is embedded with predetermined monitoring dimensions, including:

[0025] A multi-sensor monitoring equipment group is formed according to the predetermined state monitoring strategy; the multi-sensor monitoring equipment group dynamically monitors the first furnace area based on the predetermined monitoring dimensions to obtain the first real-time state, wherein the predetermined monitoring dimensions include calcining furnace dimension, burner dimension and phosphogypsum dimension.

[0026] Preferably, the predetermined state monitoring strategy read by the system terminal not only defines the monitoring method and conditions, but also embeds the predetermined monitoring dimensions for the decomposition stage, providing clear guidance for the monitoring process. This predetermined monitoring dimension provides clear guidance for the monitoring process. These dimensions include the calciner dimension, the burner dimension, and the phosphogypsum dimension, which together constitute a comprehensive monitoring framework for the calcination process in the decomposition stage. Among them, the calciner dimension mainly focuses on the operating status and performance of the calciner during the high-temperature decomposition stage, including the pressure and temperature distribution in the furnace. The burner dimension focuses on the working status and combustion efficiency of the burner during the decomposition stage, including the flame temperature and fuel consumption. The phosphogypsum dimension focuses on the physical and chemical changes of phosphogypsum during the high-temperature decomposition process, including the degree of decomposition of the product and the composition of gas emissions. In order to effectively implement this strategy, the system terminal has formed a multi-sensor monitoring equipment group. This equipment group consists of a variety of different types of sensors, each of which is optimized and configured for a specific monitoring dimension. For example, thermocouple sensors are used to monitor the temperature distribution inside the calciner during the decomposition stage to ensure precise control of high temperature conditions; ultraviolet flame sensors are used to monitor the flame state of the burner to evaluate the sufficiency and stability of combustion; gas analyzers are used to monitor the gas composition and concentration changes released by phosphogypsum during the decomposition process, indirectly reflecting the decomposition effect and progress of phosphogypsum. During the dynamic monitoring process, the multi-sensor monitoring equipment group will conduct a full range of monitoring of the first furnace area according to the predetermined monitoring dimensions of the decomposition stage, and collect and transmit various data related to the calciner, burner and phosphogypsum in real time. The system terminal integrates these data into the first real-time status of the first furnace area. This monitoring method enables the system terminal to grasp the key operating information of the first furnace area in the decomposition stage in real time, including temperature stability, sufficiency of combustion, and decomposition progress and product quality of phosphogypsum. With this information, the system can adjust the calcination parameters in time, optimize the calcination process, ensure efficient operation of the decomposition stage, and thus improve product quality and production efficiency.

[0027] The first zone temperature is corrected using a first real-time state index obtained by analyzing the first real-time state as a correction coefficient to obtain a first effective zone temperature.

[0028] In one embodiment, in order to more accurately understand the actual temperature of the first furnace zone in the decomposition stage, the system terminal analyzes the first real-time state. This state covers real-time information of multiple dimensions of the calciner, burner and phosphogypsum in the decomposition stage. Based on these real-time state information, the system terminal uses the state evaluation function to calculate a first real-time state index and uses this index as a correction coefficient. This correction coefficient reflects the degree of deviation between the current furnace zone state and the ideal state in the decomposition stage. Subsequently, the system terminal applies this correction coefficient to the first zone temperature and performs a correction calculation, that is, multiplying the first zone temperature by the correction coefficient to eliminate or reduce the temperature deviation caused by various factors. After correction, the first effective zone temperature obtained by the system terminal is closer to the real and effective temperature level of the decomposition stage, providing more accurate data support for subsequent adaptive control. In this way, the system can ensure that the temperature control in the decomposition stage is more accurate, thereby improving the stability of the calcination process and the quality of the final product.

[0029] Further, the present application provides obtaining the correction coefficient, comprising:

[0030] Acquire the furnace state feature set of the calcining furnace dimension, and match the furnace state feature parameter set corresponding to the furnace state feature set in the first real-time state; acquire the combustion state feature set of the burner dimension, and match the combustion state feature parameter set corresponding to the combustion state feature set in the first real-time state; acquire the material state feature set of the phosphogypsum dimension, and match the material state feature parameter set corresponding to the material state feature set in the first real-time state; introduce a state evaluation function to evaluate and analyze the furnace state feature parameter set, the combustion state feature parameter set and the material state feature parameter set to obtain the correction coefficient.

[0031] Preferably, the system terminal matches the corresponding feature set from the first real-time state for each dimension (calciner, burner, phosphogypsum), including a furnace state feature parameter set, a combustion state feature parameter set, and a material state feature parameter set. These feature parameter sets are specific values ​​that match the feature sets in the real-time state data. After obtaining the feature parameter sets of each dimension, the system terminal introduces a pre-built state evaluation function to comprehensively evaluate and analyze these parameter sets. This evaluation function can take into account the interactions and influences between the various parameters, thereby calculating a comprehensive evaluation result. This evaluation result will be used as a correction coefficient for the subsequent correction of the first zone temperature to obtain an effective temperature value that is closer to the actual situation.

[0032] Furthermore, the present application provides the state evaluation function, including:

[0033] The expression of the state evaluation function is as follows: .

[0034] Optionally, in the expression of the state evaluation function, the system terminal uses multiple variables and coefficients to comprehensively evaluate the real-time status of the three dimensions of the calciner, burner and phosphogypsum, and calculates the correction coefficient accordingly. The state evaluation function is as follows: . in, Characterizes the correction coefficient calculated under the first real-time state t, which is used to adjust or correct directly measured parameters such as temperature to reflect a more realistic calcination state. The value of the i-th parameter in the characteristic parameter set of the furnace state at the real-time state t. These parameters include the pressure in the furnace, the concentration of gas components, etc., which are used to describe the current state of the calcining furnace. It refers to the coefficient of variation of the ith parameter, reflecting the fluctuation or change degree of the parameter under the real-time state t. The larger the coefficient of variation, the worse the stability of the parameter, and the greater the impact on the correction coefficient. parameters, The value of the jth parameter in the characteristic parameter set that characterizes the combustion state at the real-time state t. These parameters include energy consumption (heat consumption, thermal efficiency), flame (color, shape, stability), etc., which are used to describe the current state of the burner. It refers to the coefficient of variation of the jth parameter, which is similar to Ai(t) and is used to measure the stability of the parameter. parameters, The value of the kth parameter in the material state characteristic parameter set under the real-time state t. These parameters include materials (chemical composition content, color, morphology), emissions (physical and chemical properties of waste residue), etc., which are used to describe the state of phosphogypsum during the calcination process. It refers to the coefficient of variation of the kth parameter, which is also used to measure the stability of the parameter, and the material state characteristic parameter set has parameters. and and The correction feedback coefficients characterize the calciner dimension, burner dimension and phosphogypsum dimension respectively. These coefficients are used to adjust the contribution of different dimensions to the correction coefficients to ensure that the correction coefficients can fully reflect the status of each dimension. Their sum is equal to 1 to ensure the normalization and comparability of the correction coefficients.

[0035] When the first effective zone temperature does not meet the predetermined zone temperature threshold, an adaptive control instruction is issued; a predetermined control strategy is retrieved based on the adaptive control instruction, and an adaptive control adjustment is performed on the first burner of the first furnace zone based on the predetermined control strategy.

[0036] In one embodiment, when the temperature of the first effective zone of the calcining furnace in the decomposition stage does not meet the preset temperature threshold, the system terminal will issue an adaptive control instruction. The instruction is generated based on the temperature deviation monitored in real time and the preset process requirements of the decomposition stage. Subsequently, the system terminal calls a preset control strategy from the temperature control database according to this adaptive control instruction. This control strategy covers countermeasures for different temperature deviations in the decomposition stage, such as adjusting the fuel supply of the burner, changing the combustion efficiency of the burner, and adjusting the gas flow in the furnace. Based on the control strategy, the system terminal adaptively controls and adjusts the first burner in the first furnace zone to ensure that the temperature of the first effective zone quickly and stably returns to the predetermined temperature threshold range, thereby ensuring the smooth progress of the calcination process in the decomposition stage and the stability of product quality.

[0037] Furthermore, the present application provides a method for retrieving a predetermined control strategy, including:

[0038] Obtain a first temperature difference to be adjusted between the first effective zone temperature and the predetermined zone temperature threshold; extract a first temperature control reference from a temperature control database, wherein the first temperature control reference includes a first temperature control strategy and a first control temperature difference; when the first temperature difference to be adjusted and the first control temperature difference meet a predetermined reference constraint, use the first temperature control strategy as the predetermined control strategy.

[0039] Preferably, when the system terminal detects a deviation between the first effective zone temperature and the predetermined temperature threshold during the decomposition stage, the system terminal will first calculate the difference between the first effective zone temperature and the predetermined temperature threshold to obtain the first temperature difference to be adjusted. Subsequently, the system terminal searches the temperature control database for a control reference that matches the current decomposition stage situation. The database stores a variety of temperature control strategies for different temperature deviations and their corresponding control temperature difference ranges as a reference. The system terminal extracts the first temperature control reference related to the temperature deviation in the current decomposition stage, which includes a specific first temperature control strategy and a corresponding first control temperature difference. Then, the system terminal compares the first temperature difference to be adjusted with the first control temperature difference to determine whether they meet the predetermined reference constraint. This constraint is set based on historical data, process requirements and expert experience in the decomposition stage to ensure that the selected control strategy can effectively respond to the current temperature deviation situation. If the relationship between the first temperature difference to be adjusted and the first control temperature difference meets the predetermined reference constraint conditions, the system terminal will determine the first temperature control strategy as the current predetermined control strategy, and adaptively control and adjust the burner of the first furnace zone according to this strategy to ensure that the first effective zone temperature can be restored to the predetermined temperature threshold range, thereby ensuring the smooth progress of the calcination process in the decomposition stage and ensuring the stability and consistency of product quality.

[0040] Furthermore, the present application provides for forming the temperature control database, including:

[0041] Obtain a first historical log in the historical temperature control log, wherein the first historical log includes a first historical temperature control strategy, a first historical control temperature difference, and a first historical control effect; when the first historical control energy consumption and the first historical decomposition quality in the first historical control effect reach a predetermined control constraint, establish a first reference mapping between the first historical control temperature difference and the first historical temperature control strategy; and establish the temperature control database based on the first reference mapping.

[0042] Optionally, in the process of building a temperature control database, the system terminal first obtains the log information of historical temperature control, and randomly extracts a historical log as the first historical log. This first historical log records in detail the historical control process in a certain decomposition stage, including the temperature control strategy adopted, the temperature difference before and after the control, and the final control effect, that is, the first historical temperature control strategy, the first historical control temperature difference and the first historical control effect. The first historical control effect not only includes the change in temperature, but also covers energy consumption and product quality, especially the key indicators of phosphogypsum in the decomposition stage, such as decomposition and finished product quality. The system terminal conducts an in-depth analysis of the data in the first historical log, paying special attention to the first historical control energy consumption and the first historical decomposition quality. If the historical control meets the predetermined control constraints in terms of energy consumption and product quality, this indicates that the control strategy is successful in the decomposition stage, and the strategy and temperature difference range adopted are of reference value. Therefore, based on this successful control experience, the system terminal establishes a first reference mapping to associate the first historical control temperature difference with the first historical temperature control strategy. This mapping relationship reflects which control strategy can achieve ideal energy consumption and product quality under specific temperature difference conditions in the decomposition stage. Afterwards, the system terminal integrates these successful control cases and their corresponding control strategies, temperature difference ranges, control effects and other information, and finally forms a temperature control database. This database provides rich historical references and basis for subsequent temperature control in the decomposition stage, enabling the system to achieve more accurate and efficient adaptive temperature control, thereby ensuring the stability of the calcination process and the high quality of the final product.

[0043] Furthermore, the present application provides a predetermined regulation strategy, including:

[0044] The predetermined control strategy includes a parameter setting strategy for predetermined control indicators, and the predetermined control indicators at least include fuel flow, air flow, fuel-air mixture ratio, burner power, burner injection angle and excess air coefficient.

[0045] Optionally, during the temperature control process, the predetermined control strategy adopted is not only an overall guideline, but also specifically involves the key parameter settings of multiple predetermined control indicators, which is crucial for the control accuracy and effect of the decomposition stage. These predetermined control indicators include key parameters such as fuel flow, air flow, fuel-air mixing ratio, burner power, burner injection angle and excess air coefficient. Among them, the fuel flow refers to the amount of fuel entering the burner per unit time, which directly determines the amount of heat that can be generated in the decomposition stage. The air flow refers to the amount of air that enters the burner and mixes with the fuel per unit time. This parameter has an important influence on the combustion efficiency and the generation of combustion products, especially in the decomposition stage, the control of air flow is particularly critical. The fuel-air mixing ratio is the mixing ratio of fuel and air before combustion. This ratio is directly related to whether the combustion process in the decomposition stage is stable and efficient. If the mixing ratio is inappropriate, it may lead to incomplete combustion in the decomposition stage, affecting the decomposition effect of phosphogypsum and producing adverse harmful gases or heat losses. The burner power refers to the heat or energy that the burner can generate per unit time, which directly affects the temperature distribution and heating rate in the calcining furnace in the decomposition stage. The burner injection angle refers to the angle between the fuel and air mixture when it is ejected from the burner nozzle and the burner axis. This angle affects the shape, distribution and combustion efficiency of the flame, and is particularly important for flame control during the decomposition stage. The excess air coefficient is the ratio of the actual amount of air supplied to the theoretical amount of air, and its size directly affects the combustion efficiency and the generation of combustion products during the decomposition stage. Through the precise setting or range control of these key parameters, the predetermined control strategy achieves precise control of the combustion process during the decomposition stage, ensures the stability of the temperature in the calcining furnace, and ultimately ensures the reliability of the product quality during the decomposition stage of phosphogypsum.

[0046] In the above, refer to Figure 1 The present invention describes in detail a temperature adaptive control method of a phosphogypsum calcining furnace according to an embodiment of the present invention. Figure 2 A temperature adaptive control device for a phosphogypsum calcining furnace according to an embodiment of the present invention is described.

[0047] A temperature adaptive control device for a phosphogypsum calcining furnace according to an embodiment of the present invention is used to solve the technical problem of low calcining efficiency and unstable product quality due to uneven temperature distribution in the calcining furnace and inability to effectively cope with fluctuations in working conditions, so as to achieve the effect of ensuring the uniformity and stability of the temperature in the calcining furnace, improving the calcining efficiency, and optimizing the product quality by real-time monitoring of the temperature and state of each furnace zone, automatically correcting the temperature deviation, and improving the calcining efficiency. A temperature adaptive control device for a phosphogypsum calcining furnace includes: a partition processing module 1, a temperature monitoring module 2, a real-time state acquisition module 3, a temperature correction module 4, an adaptive control instruction issuing module 5, and an adaptive control adjustment module 6.

[0048] Partition processing module 1: the partition processing module 1 is used to read a predetermined partition strategy, and partition the calcining furnace based on the predetermined partition strategy to obtain a partition result, and the partition result includes multiple furnace zones; temperature monitoring module 2: the temperature monitoring module 2 is used to monitor the first zone temperature of the first furnace zone through a first predetermined temperature sensor, the first furnace zone refers to any one of the multiple furnace zones, and the first predetermined temperature sensor is arranged in the first furnace zone; real-time state acquisition module 3: the real-time state acquisition module 3 is used to read a predetermined state monitoring strategy, and obtain the first real-time state of the first furnace zone based on the predetermined state monitoring strategy; temperature correction module 4: the temperature correction module 4 is used to correct the first zone temperature by using the first real-time state index obtained by analyzing the first real-time state as a correction coefficient to obtain a first effective zone temperature; adaptive control instruction issuing module 5: the adaptive control instruction issuing module 5 is used to issue an adaptive control instruction when the first effective zone temperature does not meet the predetermined zone temperature threshold; adaptive control adjustment module 6: the adaptive control adjustment module 6 is used to call a predetermined control strategy based on the adaptive control instruction, and adaptively control and adjust the first burner of the first furnace zone based on the predetermined control strategy.

[0049] Furthermore, the partition processing module 1 further includes:

[0050] A first effective range is acquired according to a first design feature of the first burner; and the predetermined partitioning strategy is obtained according to a first unit length set based on the first effective range.

[0051] Furthermore, the real-time status acquisition module 3 also includes:

[0052] A multi-sensor monitoring equipment group is formed according to the predetermined state monitoring strategy; the multi-sensor monitoring equipment group dynamically monitors the first furnace area based on the predetermined monitoring dimensions to obtain the first real-time state, wherein the predetermined monitoring dimensions include calcining furnace dimension, burner dimension and phosphogypsum dimension.

[0053] Furthermore, the temperature correction module 4 also includes:

[0054] Acquire the furnace state feature set of the calcining furnace dimension, and match the furnace state feature parameter set corresponding to the furnace state feature set in the first real-time state; acquire the combustion state feature set of the burner dimension, and match the combustion state feature parameter set corresponding to the combustion state feature set in the first real-time state; acquire the material state feature set of the phosphogypsum dimension, and match the material state feature parameter set corresponding to the material state feature set in the first real-time state; introduce a state evaluation function to evaluate and analyze the furnace state feature parameter set, the combustion state feature parameter set and the material state feature parameter set to obtain the correction coefficient.

[0055] Furthermore, the temperature correction module 4 also includes:

[0056] The expression of the state evaluation function is as follows: ; in, Characterizing the first real-time state The correction factor under Characterizing the furnace state characteristic parameter set parameters, refers to the The coefficient of variation of the parameters, and the furnace state characteristic parameter set has a total of parameters, Characterizing the combustion state characteristic parameter set parameters, refers to the The coefficient of variation of the parameters, and the combustion state characteristic parameter set has a total of parameters, Characterize the material state characteristic parameter set parameters, refers to the The coefficient of variation of the parameters, and the material state characteristic parameter set has a total of parameters, and and correction feedback coefficients characterizing the calciner dimension, the burner dimension and the phosphogypsum dimension, respectively, and .

[0057] Furthermore, the adaptive control adjustment module 6 also includes:

[0058] Obtain a first temperature difference to be adjusted between the first effective zone temperature and the predetermined zone temperature threshold; extract a first temperature control reference from a temperature control database, wherein the first temperature control reference includes a first temperature control strategy and a first control temperature difference; when the first temperature difference to be adjusted and the first control temperature difference meet a predetermined reference constraint, use the first temperature control strategy as the predetermined control strategy.

[0059] Furthermore, the adaptive control adjustment module 6 also includes:

[0060] Obtain a first historical log in the historical temperature control log, wherein the first historical log includes a first historical temperature control strategy, a first historical control temperature difference, and a first historical control effect; when the first historical control energy consumption and the first historical decomposition quality in the first historical control effect reach a predetermined control constraint, establish a first reference mapping between the first historical control temperature difference and the first historical temperature control strategy; and establish the temperature control database based on the first reference mapping.

[0061] Furthermore, the adaptive control adjustment module 6 also includes:

[0062] The predetermined control strategy includes a parameter setting strategy for predetermined control indicators, and the predetermined control indicators at least include fuel flow, air flow, fuel-air mixture ratio, burner power, burner injection angle and excess air coefficient.

[0063] A temperature adaptive control device for a phosphogypsum calcining furnace provided in an embodiment of the present invention can execute a temperature adaptive control method for a phosphogypsum calcining furnace provided in any embodiment of the present invention, and has functional modules and beneficial effects corresponding to the execution method.

[0064] Although the present application makes various references to certain modules in the device according to the embodiments of the present application, any number of different modules may be used and run on the user terminal and / or server, and the various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0065] The above specific implementations do not constitute a limitation on the protection scope of this application. It should be understood by those skilled in the art that various modifications, combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included in the protection scope of this application.

Claims

1. A temperature adaptive control method for a phosphogypsum calcining furnace, characterized in that: include: Reading a predetermined partitioning strategy, and performing partitioning processing on the calcining furnace based on the predetermined partitioning strategy to obtain a partitioning result, wherein the partitioning result includes a plurality of furnace zones; monitoring a first zone temperature of a first furnace zone by a first predetermined temperature sensor, wherein the first furnace zone refers to any one of the plurality of furnace zones, and the first predetermined temperature sensor is arranged in the first furnace zone; Reading a predetermined state monitoring strategy, and acquiring a first real-time state of the first furnace zone based on the predetermined state monitoring strategy; Correcting the first zone temperature by using a first real-time state index obtained by analyzing the first real-time state as a correction coefficient to obtain a first effective zone temperature; When the first effective zone temperature does not meet the predetermined zone temperature threshold, issuing an adaptive control instruction; Retrieving a predetermined control strategy based on the adaptive control instruction, and adaptively controlling and adjusting the first burner of the first furnace zone based on the predetermined control strategy; The predetermined state monitoring strategy has predetermined monitoring dimensions embedded therein, including: Establishing a multi-sensor monitoring device group according to the predetermined state monitoring strategy; The multi-sensor monitoring equipment group dynamically monitors the first furnace zone based on the predetermined monitoring dimension to obtain the first real-time state, wherein the predetermined monitoring dimension includes a calcining furnace dimension, a burner dimension, and a phosphogypsum dimension; The method further comprises: Acquire a furnace state feature set of the calcining furnace dimension, and match a furnace state feature parameter set corresponding to the furnace state feature set in the first real-time state; Acquire a combustion state feature set of the burner dimension, and match a combustion state feature parameter set corresponding to the combustion state feature set in the first real-time state; Acquire a material state feature set of the phosphogypsum dimension, and match a material state feature parameter set corresponding to the material state feature set in the first real-time state; Introducing a state evaluation function to evaluate and analyze the furnace state characteristic parameter set, the combustion state characteristic parameter set and the material state characteristic parameter set to obtain the correction coefficient; The expression of the state evaluation function is as follows: ； in, Characterizing the correction coefficient in the first real-time state t, The i-th parameter in the characteristic parameter set representing the furnace state, It refers to the coefficient of variation of the i-th parameter, and there are I parameters in the furnace state characteristic parameter set, The jth parameter in the characteristic parameter set representing the combustion state, It refers to the coefficient of variation of the jth parameter, and there are J parameters in the combustion state characteristic parameter set. The kth parameter in the material state characteristic parameter set is characterized, It refers to the coefficient of variation of the kth parameter, and there are K parameters in the material state characteristic parameter set. and and correction feedback coefficients characterizing the calciner dimension, the burner dimension and the phosphogypsum dimension, respectively, and .

2. The temperature adaptive control method of a phosphogypsum calcining furnace according to claim 1, characterized in that: include: Acquire a first action range according to a first design feature of the first burner; The predetermined partitioning strategy is obtained according to a first unit length set based on the first scope of action.

3. The temperature adaptive control method of a phosphogypsum calcining furnace according to claim 1, characterized in that: include: Obtaining a first temperature difference to be adjusted between the first effective zone temperature and the predetermined zone temperature threshold; Extracting a first temperature control reference from a temperature control database, wherein the first temperature control reference includes a first temperature control strategy and a first control temperature difference; When the first temperature difference to be adjusted and the first regulating temperature difference meet a predetermined reference constraint, the first temperature regulating strategy is used as the predetermined regulating strategy.

4. The temperature adaptive control method of a phosphogypsum calcining furnace according to claim 3, characterized in that: include: Obtaining a first historical log in the historical temperature control log, wherein the first historical log includes a first historical temperature control strategy, a first historical control temperature difference, and a first historical control effect; When the first historical regulation energy consumption and the first historical decomposition quality in the first historical regulation effect reach a predetermined regulation constraint, establishing a first reference mapping between the first historical regulation temperature difference and the first historical temperature regulation strategy; The temperature control database is constructed based on the first reference mapping.

5. The temperature adaptive control method of a phosphogypsum calcining furnace according to claim 3, characterized in that: The predetermined control strategy includes a parameter setting strategy for predetermined control indicators, and the predetermined control indicators at least include fuel flow, air flow, fuel-air mixture ratio, burner power, burner injection angle and excess air coefficient.

6. A temperature adaptive control device for a phosphogypsum calcining furnace, characterized in that: The device is used to implement the temperature adaptive control method of a phosphogypsum calcining furnace according to any one of claims 1 to 5, comprising: Partition processing module: reads a predetermined partition strategy, and performs partition processing on the calcining furnace based on the predetermined partition strategy to obtain a partition result, wherein the partition result includes multiple furnace zones; Temperature monitoring module: monitoring a first zone temperature of a first furnace zone through a first predetermined temperature sensor, wherein the first furnace zone refers to any one of the plurality of furnace zones, and the first predetermined temperature sensor is arranged in the first furnace zone; A real-time status acquisition module: reads a predetermined status monitoring strategy, and acquires a first real-time status of the first furnace zone based on the predetermined status monitoring strategy; Temperature correction module: correcting the first zone temperature by using the first real-time state index obtained by analyzing the first real-time state as a correction coefficient to obtain a first effective zone temperature; An adaptive control instruction issuing module: when the first effective zone temperature does not meet the predetermined zone temperature threshold, issuing an adaptive control instruction; Adaptive control adjustment module: based on the adaptive control instruction, it retrieves a predetermined control strategy, and based on the predetermined control strategy, it performs adaptive control adjustment on the first burner of the first furnace zone.

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