Energy-saving control system for lime shaft kiln

Abstract

The present application belongs to lime vertical kiln supervision technical field, specifically a kind of lime vertical kiln energy-saving control system, including vertical kiln monitoring transmission unit, kiln abnormality identification unit, adaptive adjustment unit, operation risk decision unit, energy waste management evaluation unit and lime vertical kiln supervision terminal;The present application is monitored to the inside of lime vertical kiln by vertical kiln monitoring transmission unit, kiln abnormality analysis unit is handled to kiln monitoring information and identifies abnormality, adaptive adjustment unit is based on abnormal information and is adaptively adjusted to the operation of lime vertical kiln, significantly improve production safety and energy utilization rate, and by operation risk decision unit and energy waste management evaluation unit, the running risk condition and energy waste management condition of lime vertical kiln are analyzed and early warning, it is favorable to make corresponding improvement optimization measures in time, ensure the energy-saving effect and operation safety of lime vertical kiln, significantly reduce the supervision difficulty of supervision personnel to lime vertical kiln.

Description

Technical Field

[0001] This invention relates to the field of lime vertical kiln monitoring technology, specifically an energy-saving control system for lime vertical kilns. Background Technology

[0002] A vertical lime kiln, also known as a vertical lime kiln or vertical shaft kiln, is a vertical thermal equipment used to produce lime. Its core principle is to complete the calcination process of limestone by layering it from top to bottom in the vertical kiln. It has the characteristics of compact structure, high thermal efficiency, and flexible operation. It is widely used in building materials, metallurgy, chemical and other industries. During the operation of a vertical lime kiln, it is necessary to control its operation.

[0003] Currently, when controlling the operation of lime vertical kilns, it is difficult to comprehensively monitor the internal structure of the kiln and achieve anomaly identification and adaptive control. Furthermore, it is impossible to reasonably analyze and provide timely warnings regarding the operational risks and energy waste management performance of the lime vertical kiln. This is not conducive to ensuring the energy-saving effect and operational safety of the lime vertical kiln, and it cannot effectively reduce the difficulty of supervision for regulatory personnel. The level of intelligence is low.

[0004] To address the aforementioned technical shortcomings, a solution is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an energy-saving control system for lime vertical kilns, which solves the problems of existing technologies that make it difficult to comprehensively monitor the interior of lime vertical kilns and achieve anomaly identification and adaptive control, and that cannot reasonably analyze and provide timely warnings on the operational risks and energy waste management performance of lime vertical kilns, which is not conducive to ensuring the energy-saving effect and operational safety of lime vertical kilns, and makes operation supervision difficult.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An energy-saving control system for a lime vertical kiln includes a vertical kiln monitoring and transmission unit, a kiln internal anomaly identification unit, an adaptive adjustment unit, an operation risk decision-making unit, an energy waste management and assessment unit, and a lime vertical kiln monitoring terminal. The vertical kiln monitoring and transmission unit monitors the interior of the lime vertical kiln and sends the collected monitoring information to the kiln internal anomaly analysis unit. The kiln internal anomaly analysis unit identifies and analyzes internal anomalies in the lime vertical kiln using an anomaly detection algorithm. After identifying an anomaly, it sends the anomaly information to the adaptive adjustment unit and the lime vertical kiln monitoring terminal. The adaptive adjustment unit generates a matching control strategy based on the anomaly information and adaptively adjusts the operation of the lime vertical kiln according to the control strategy.

[0008] The operational risk decision-making unit analyzes the operational risk status of the lime vertical kiln, generates high-risk or low-risk operation signals, and sends these signals to the lime vertical kiln monitoring terminal. The energy waste management assessment unit comprehensively assesses the energy waste management status during the operation of the lime vertical kiln, generates qualified or abnormal management signals, and sends these signals to the lime vertical kiln monitoring terminal. The lime vertical kiln monitoring terminal issues corresponding warnings when it receives abnormal information, high-risk operation signals, or abnormal management signals.

[0009] Furthermore, the specific analysis process for operating the risk decision-making unit includes:

[0010] All abnormal information generated within a unit of time is obtained, and the number of times the abnormality occurs is marked as the abnormality value of the lime vertical kiln. The abnormality value of the lime vertical kiln is compared with the preset abnormality threshold of the lime vertical kiln. If the abnormality value of the lime vertical kiln exceeds the preset abnormality threshold of the lime vertical kiln, a high-risk operation signal is generated.

[0011] If the abnormal inspection value of the lime vertical kiln does not exceed the preset abnormal inspection threshold, the operation risk decision assessment value is obtained through lime vertical kiln operation risk decision analysis. The operation risk decision assessment value is compared with the preset operation risk decision assessment threshold. If the operation risk decision assessment value exceeds the preset operation risk decision assessment threshold, a high-risk operation signal is generated; if the operation risk decision assessment value does not exceed the preset operation risk decision assessment threshold, a low-risk operation signal is generated.

[0012] Furthermore, the specific analysis process for the risk decision analysis of lime vertical kiln transportation is as follows:

[0013] After identifying the corresponding internal anomaly, a timer is started until the corresponding internal anomaly is eliminated, and the elimination time is obtained accordingly. The elimination time is then compared with the corresponding preset elimination time threshold. If the elimination time exceeds the preset elimination time threshold, the corresponding elimination time is marked as the risk elimination time.

[0014] The number of times the risk elimination takes place within a unit of time is obtained and marked as the risk elimination detection value. The ratio of the elimination time to the corresponding preset elimination time threshold is marked as the elimination percentage value. The average of all elimination percentage values ​​within a unit of time is calculated to obtain the elimination time table value. The risk decision evaluation value is obtained by weighted summation of the lime vertical kiln abnormal inspection value, the risk elimination detection value, and the elimination time table value.

[0015] Furthermore, the energy waste management assessment unit is connected to the waste heat utilization efficiency analysis unit and the combustion sufficiency judgment unit. The waste heat utilization efficiency analysis unit analyzes the waste heat recovery performance of the flue gas emitted by the lime vertical kiln per unit time, assigns a first characteristic symbol TX-1 or TX-2 through analysis, and sends the first characteristic symbol TX-1 or TX-2 to the energy waste management assessment unit.

[0016] The combustion sufficiency judgment unit determines the combustion sufficiency of the combustion chamber in the lime vertical kiln based on the concentration of combustible gases in the emitted flue gas, and assigns a second characteristic symbol WX-1 or WX-2 accordingly, and sends the second characteristic symbol WX-1 or WX-2 to the energy waste management assessment unit; the energy waste management assessment unit generates a management qualified signal when it receives TX-2∩WX-2, and generates a management abnormal signal in other cases.

[0017] Furthermore, the specific analysis process of the waste heat utilization efficiency analysis unit is as follows:

[0018] Several detection time points are set within a unit of time. The temperature of the waste gas generated in the lime vertical kiln before and after waste heat recovery is collected at the corresponding detection time points. The ratio of the temperature after waste heat recovery to the temperature before waste heat recovery is calculated to obtain the waste heat utilization efficiency test value. The waste heat utilization efficiency test value is compared with the preset waste heat utilization efficiency test threshold. If the waste heat utilization efficiency test value exceeds the preset waste heat utilization efficiency test threshold, the corresponding detection time point is marked as an inefficient waste heat utilization time point.

[0019] The number of inefficient waste heat utilization time points per unit time is obtained and the ratio is calculated with the total number of detection time points to obtain the inefficient waste heat utilization value. The inefficient waste heat utilization value is compared with the preset inefficient waste heat utilization threshold. If the inefficient waste heat utilization value exceeds the preset inefficient waste heat utilization threshold, the first feature symbol TX-1 is assigned.

[0020] Furthermore, if the waste heat utilization inefficiency value does not exceed the preset waste heat utilization inefficiency threshold, the waste heat utilization efficiency test values ​​at all test points within a unit time are averaged to obtain the waste heat utilization efficiency value, and the waste heat utilization efficiency test value with the largest value within a unit time is marked as the waste heat utilization low amplitude value.

[0021] The waste heat utilization efficiency value is calculated by weighted summation of the waste heat utilization inefficiency value, waste heat utilization efficiency value, and waste heat utilization low amplitude value. The waste heat utilization efficiency value is then compared with a preset waste heat utilization efficiency threshold. If the waste heat utilization efficiency value exceeds the preset waste heat utilization efficiency threshold, a first characteristic symbol TX-1 is assigned; if the waste heat utilization efficiency value does not exceed the preset waste heat utilization efficiency threshold, a first characteristic symbol TX-2 is assigned.

[0022] Furthermore, the specific analysis process of the combustion completeness judgment unit is as follows:

[0023] The types of combustibles contained in the emitted flue gas are obtained, and the concentration of the corresponding type of combustible is marked as a combustible concentration value. Each type of combustible corresponds to a set of preset combustibility weight values. The combustible concentration value of the corresponding type of combustible is multiplied by the corresponding preset combustible weight value to obtain a combustible analysis value. The combustible analysis values ​​of all types of combustibles contained in the emitted flue gas are summed to obtain a combustible comprehensive coefficient. The combustible comprehensive coefficient is compared with a preset combustible comprehensive coefficient threshold. If the combustible comprehensive coefficient exceeds the preset combustible comprehensive coefficient threshold, it is determined that the combustion chamber is in an incomplete combustion state.

[0024] The total duration of combustion chamber in incomplete combustion state within a unit time is obtained and marked as incomplete combustion condition value. The average value of all combustible comprehensive coefficients within a unit time is calculated to obtain combustion assessment anomaly value. The incomplete combustion condition value and combustion assessment anomaly value are compared with the preset incomplete combustion condition threshold and the preset combustion assessment anomaly threshold respectively. If the incomplete combustion condition value or combustion assessment anomaly value exceeds the corresponding preset threshold, the second feature symbol WX-1 is assigned; if neither the incomplete combustion condition value nor the combustion assessment anomaly value exceeds the corresponding preset threshold, the second feature symbol WX-2 is assigned.

[0025] Furthermore, the waste heat utilization efficiency analysis unit is communicatively connected to the heat exchanger cleaning decision unit. The waste heat utilization efficiency analysis unit sends the first characteristic symbol TX-1 or TX-2 to the heat exchanger cleaning decision unit. When the heat exchanger cleaning decision unit receives the first characteristic symbol TX-1, it generates a cleaning alarm signal. When it receives the first characteristic symbol TX-2, it uses cleaning decision analysis to determine whether to generate a cleaning alarm signal. When a cleaning alarm signal is generated, it is sent to the lime vertical kiln monitoring terminal.

[0026] Furthermore, the specific analysis process of the cleaning decision analysis is as follows:

[0027] The time of the last cleaning of the heat exchanger in the lime vertical kiln is collected. The time interval between the last cleaning of the heat exchanger in the lime vertical kiln and the current time is marked as the target time period. The total running time of the heat exchanger in the lime vertical kiln within the target time period is collected and marked as the total heat exchange time value.

[0028] When the heat exchanger is recovering waste heat from flue gas, the concentration of dust in the flue gas is collected and marked as the dust content value of the flue gas. The dust content value of the flue gas is compared with the preset dust content threshold. If the dust content value of the flue gas exceeds the preset dust content threshold, it is determined that the heat exchanger is in a dust-prone state. The total time that the heat exchanger in the lime vertical kiln is in a dust-prone state within the target period is obtained and marked as the total dust-prone time value.

[0029] The dust attachment impact value is obtained by averaging all flue gas dust content values ​​during the heat exchanger operation within the target time period. The cleaning decision value is obtained by weighted summation of the total heat exchange time value, the total dust attachment time value, and the dust attachment impact value. The cleaning decision value is compared with the preset cleaning decision threshold. If the cleaning decision value exceeds the preset cleaning decision threshold, a cleaning alarm signal is generated.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] 1. In this invention, the internal structure of the lime vertical kiln is monitored by the vertical kiln monitoring and transmission unit, the kiln internal anomaly analysis unit processes the monitoring information and identifies anomalies, and the adaptive adjustment unit adaptively adjusts the operation of the lime vertical kiln based on the anomaly information, which significantly improves production safety and energy utilization. Furthermore, the operation risk decision unit analyzes the operation risk status of the lime vertical kiln, strengthens the operation supervision of the lime vertical kiln when a high-risk operation signal is generated, and suspends its operation as needed to ensure the operation safety and operation effect of the lime vertical kiln.

[0032] 2. In this invention, the waste heat utilization efficiency analysis unit reasonably analyzes and accurately reflects the waste heat recovery and utilization efficiency of the lime vertical kiln, the combustion sufficiency judgment unit reasonably analyzes and accurately reflects the combustion sufficiency of the lime vertical kiln, and the energy waste management assessment unit comprehensively assesses the energy waste management status during the operation of the lime vertical kiln based on the waste heat utilization efficiency judgment results and the combustion sufficiency judgment results. When a management abnormality signal is generated, corresponding improvement and optimization measures are taken to avoid a large amount of energy waste, ensure the energy-saving effect of the lime vertical kiln, and significantly reduce the difficulty of supervision for the lime vertical kiln by the supervisors. Attached Figure Description

[0033] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings;

[0034] Figure 1 This is a system block diagram of Embodiment 1 of the present invention;

[0035] Figure 2 This is a system block diagram of Embodiment 2 of the present invention. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1: As Figure 1As shown, the present invention proposes an energy-saving control system for a lime vertical kiln, which includes a vertical kiln monitoring and transmission unit, a kiln in-kiln anomaly identification unit, an adaptive adjustment unit, an operation risk decision-making unit, an energy waste management and assessment unit, and a lime vertical kiln monitoring terminal.

[0038] The vertical kiln monitoring and transmission unit monitors the interior of the lime vertical kiln (for example, using K-type thermocouples (accuracy ±1.5℃), infrared thermal imagers (resolution 0.1℃) to monitor the temperature field inside the kiln in real time, and using piezoresistive sensors (range 0-1MPa) to monitor the pressure distribution inside the kiln, etc.), and sends the collected monitoring information inside the kiln to the kiln anomaly analysis unit.

[0039] The kiln anomaly analysis unit processes the kiln monitoring information through anomaly detection algorithms and identifies and analyzes internal anomalies in the lime vertical kiln (for example, identifying abnormal points that deviate from the normal pattern through isolated forest, such as sudden temperature spikes, or learning the normal pattern of time series data through LSTM neural network to predict potential anomalies). After identifying anomalies, the anomaly information is sent to the adaptive adjustment unit and the lime vertical kiln monitoring terminal.

[0040] The adaptive adjustment unit generates a matching control strategy based on abnormal information, and adaptively adjusts the operation of the lime vertical kiln according to the control strategy (such as reducing load, adjusting dampers, and starting the cooling system). The lime vertical kiln monitoring terminal receives abnormal information and issues corresponding warnings to remind the monitoring personnel to pay close attention and make timely manual intervention and control. Through multi-source data fusion and intelligent algorithms, it realizes accurate identification and rapid response to internal abnormalities of the lime vertical kiln, significantly improving production safety and energy utilization, and providing key technical support for the intelligent management of lime vertical kilns.

[0041] The operational risk decision-making unit analyzes the operational risk status of the lime vertical kiln, generating high-risk or low-risk signals, which are then sent to the lime vertical kiln monitoring terminal. Upon receiving a high-risk signal, the monitoring terminal issues a corresponding warning to remind supervisors to strengthen operational monitoring of the lime vertical kiln and, if necessary, suspend its operation, ensuring the operational safety and effectiveness of the lime vertical kiln. This system demonstrates a high level of intelligence. The specific analysis process of the operational risk decision-making unit is as follows:

[0042] All abnormal information generated within a unit time is obtained, and the number of abnormal occurrences is marked as the abnormal detection value of the lime vertical kiln. The abnormal detection value of the lime vertical kiln is compared with the preset abnormal detection threshold of the lime vertical kiln. If the abnormal detection value of the lime vertical kiln exceeds the preset abnormal detection threshold of the lime vertical kiln, it indicates that the operation risk of the lime vertical kiln within a unit time is high and operation supervision needs to be strengthened, and a high-risk operation signal is generated.

[0043] If the abnormal detection value of the lime vertical kiln does not exceed the preset abnormal detection threshold, the time is started after the corresponding internal abnormality is identified until the corresponding internal abnormality is eliminated. The elimination time is obtained accordingly. The elimination time is compared with the corresponding preset elimination time threshold. If the elimination time exceeds the preset elimination time threshold, the corresponding elimination time is marked as the risk elimination time.

[0044] The number of risk elimination times per unit time is obtained and marked as risk elimination detection value. The ratio of the elimination time to the corresponding preset elimination time threshold is marked as elimination percentage value. The average of all elimination percentage values ​​per unit time is calculated to obtain the elimination time table value.

[0045] The operational risk assessment value is obtained by weighted summation of the abnormal inspection value, risk elimination detection value, and risk elimination timetable value of the lime vertical kiln. Specifically, each of the three values ​​is assigned a corresponding preset weight coefficient, and then multiplied by the respective preset weight coefficient. The sum of the three products is then marked as the operational risk assessment value. Furthermore, the larger the operational risk assessment value, the higher the overall operational risk of the lime vertical kiln per unit time.

[0046] The operational risk assessment value is compared with the preset operational risk assessment threshold. If the operational risk assessment value exceeds the preset operational risk assessment threshold, it indicates that the overall operational risk of the lime vertical kiln is relatively high per unit time, and operational supervision needs to be strengthened, thus generating a high-risk operational signal. If the operational risk assessment value does not exceed the preset operational risk assessment threshold, it indicates that the overall operational risk of the lime vertical kiln is relatively low per unit time, thus generating a low-risk operational signal.

[0047] The energy waste management assessment unit comprehensively evaluates the energy waste management status during the operation of the lime vertical kiln. When TX-2∩WX-2 is received, a management qualified signal is generated. In other cases (TX-1∩WX-2, TX-2∩WX-1, or TX-1∩WX-1), a management abnormal signal is generated and sent to the lime vertical kiln monitoring terminal. When the lime vertical kiln monitoring terminal receives the management abnormal signal, it issues a corresponding warning to remind the supervisors to take timely improvement and optimization measures to maximize the waste heat recovery and utilization efficiency and combustion completeness of the lime vertical kiln, avoid a large amount of energy waste, and thus ensure the energy-saving effect of the lime vertical kiln and significantly reduce the difficulty of supervision for the lime vertical kiln.

[0048] It should be noted that the energy waste management assessment unit is connected to the waste heat utilization efficiency analysis unit and the combustion sufficiency judgment unit. The waste heat utilization efficiency analysis unit analyzes the waste heat recovery performance of the flue gas emitted by the lime vertical kiln per unit time and assigns the first characteristic symbol TX-1 or TX-2 through the analysis.

[0049] Furthermore, sending the first characteristic symbol TX-1 or TX-2 to the energy waste management and assessment unit not only enables reasonable analysis and accurate feedback on the waste heat recovery and utilization efficiency of the lime vertical kiln, but also provides information support for the analysis process of the energy waste management and assessment unit, ensuring the accuracy of its analysis results; the specific analysis process of the waste heat utilization efficiency analysis unit is as follows:

[0050] Several detection time points are set within a unit time period, and the interval between two adjacent detection time points is the same. The temperature of the waste gas generated in the lime vertical kiln before waste heat recovery and the temperature after waste heat recovery are collected at the corresponding detection time points. The ratio of the temperature after waste heat recovery to the temperature before waste heat recovery is calculated to obtain the waste heat utilization efficiency test value.

[0051] The waste heat utilization efficiency test value is compared with the preset waste heat utilization efficiency test threshold. If the waste heat utilization efficiency test value exceeds the preset waste heat utilization efficiency test threshold, it indicates that the waste heat recovery efficiency at the corresponding test time point is low. Then the corresponding test time point is marked as an inefficient waste heat utilization time point.

[0052] The number of inefficient waste heat utilization points per unit time is obtained and the ratio is calculated with the total number of detection points to obtain the inefficient waste heat utilization value. The inefficient waste heat utilization value is compared with the preset inefficient waste heat utilization threshold. If the inefficient waste heat utilization value exceeds the preset inefficient waste heat utilization threshold, it indicates that the heat exchanger in the lime vertical kiln performs poorly in terms of waste heat recovery and utilization efficiency for the emitted exhaust gas per unit time, and the first characteristic symbol TX-1 is assigned.

[0053] Furthermore, if the waste heat utilization inefficiency value does not exceed the preset waste heat utilization inefficiency threshold, the waste heat utilization efficiency test values ​​at all test points within a unit time are averaged to obtain the waste heat utilization efficiency value, and the waste heat utilization efficiency test value with the largest value within a unit time is marked as the waste heat utilization low amplitude value.

[0054] The waste heat utilization efficiency value is obtained by weighted summation of the waste heat utilization inefficiency value, waste heat utilization efficiency value, and waste heat utilization low amplitude value. Specifically, each of the waste heat utilization inefficiency value, waste heat utilization efficiency value, and waste heat utilization low amplitude value is assigned a corresponding preset weight coefficient, and then each of these values ​​is multiplied by its respective preset weight coefficient. The sum of the three product results is then marked as the waste heat utilization efficiency value. Furthermore, the larger the waste heat utilization efficiency value, the worse the overall waste heat recovery and utilization efficiency of the heat exchanger in the lime vertical kiln for the emitted exhaust gas per unit time.

[0055] The waste heat utilization efficiency value is compared with the preset waste heat utilization efficiency threshold. If the waste heat utilization efficiency value exceeds the preset waste heat utilization efficiency threshold, it indicates that the overall waste heat recovery efficiency of the heat exchanger in the lime vertical kiln for the emitted exhaust gas is poor per unit time, and the first characteristic symbol TX-1 is assigned. If the waste heat utilization efficiency value does not exceed the preset waste heat utilization efficiency threshold, it indicates that the overall waste heat recovery efficiency of the heat exchanger in the lime vertical kiln for the emitted exhaust gas is good per unit time, and the first characteristic symbol TX-2 is assigned.

[0056] The combustion sufficiency assessment unit determines the combustion sufficiency of the combustion chamber in the lime vertical kiln based on the concentration of combustible gases in the emitted flue gas, and assigns a second characteristic symbol WX-1 or WX-2 accordingly. This second characteristic symbol WX-1 or WX-2 is then sent to the energy waste management assessment unit. This not only allows for reasonable analysis and accurate feedback on the combustion sufficiency performance of the lime vertical kiln, but also provides information support for the analysis process of the energy waste management assessment unit, further ensuring the accuracy of its analysis results. The specific analysis process of the combustion sufficiency assessment unit is as follows:

[0057] The types of combustibles (such as carbon monoxide, methane, etc.) contained in the emitted flue gas are obtained, and the concentration of the corresponding type of combustible is marked as the combustible concentration value. Each type of combustible corresponds to a set of preset combustible weight values ​​with a value greater than zero. It should be noted that the higher the combustion energy contained in the corresponding type of combustible, the larger the value of the preset combustible weight value that matches it.

[0058] The combustible concentration value of the corresponding type of combustible material is multiplied by the corresponding preset combustible weight value to obtain the combustible analysis value. The combustible analysis values ​​of all types of combustible materials contained in the emitted flue gas are summed to obtain the combustible comprehensive coefficient. The combustible comprehensive coefficient is compared with the preset combustible comprehensive coefficient threshold. If the combustible comprehensive coefficient exceeds the preset combustible comprehensive coefficient threshold, it indicates that the combustion in the combustion chamber of the lime vertical kiln is incomplete, and the combustion chamber is judged to be in an incomplete combustion state.

[0059] The total duration of combustion chamber in incomplete combustion state within a unit time is obtained and marked as incomplete combustion condition value. The average value of all combustible comprehensive coefficients within a unit time is calculated to obtain combustion assessment anomaly value. The incomplete combustion condition value and combustion assessment anomaly value are numerically compared with the preset incomplete combustion condition threshold and the preset combustion assessment anomaly threshold, respectively.

[0060] If the inadequate time condition value or the abnormal value of combustion assessment exceeds the corresponding preset threshold, it indicates that the combustion sufficiency of the combustion chamber in the lime vertical kiln is poor per unit time, and the second characteristic symbol WX-1 is assigned; if neither the inadequate time condition value nor the abnormal value of combustion assessment exceeds the corresponding preset threshold, it indicates that the combustion sufficiency of the combustion chamber in the lime vertical kiln is good per unit time, and the second characteristic symbol WX-2 is assigned.

[0061] Example 2: Figure 2 As shown, the difference between this embodiment and embodiment one is that the waste heat utilization efficiency analysis unit is communicatively connected to the heat exchanger cleaning decision unit. The waste heat utilization efficiency analysis unit sends the first feature symbol TX-1 or TX-2 to the heat exchanger cleaning decision unit. When the heat exchanger cleaning decision unit receives the first feature symbol TX-1, it generates a cleaning alarm signal. When it receives the first feature symbol TX-2, it determines whether to generate a cleaning alarm signal through cleaning decision analysis.

[0062] Furthermore, when a cleaning alarm signal is generated, it is sent to the lime vertical kiln monitoring terminal. Upon receiving the cleaning alarm signal, the lime vertical kiln monitoring terminal issues a corresponding warning to remind the monitoring personnel to clean the heat exchanger of the lime vertical kiln in a timely manner, ensuring its subsequent waste heat recovery performance and improving the energy-saving effect of the lime vertical kiln. The specific analysis process of cleaning decision analysis is as follows:

[0063] The time of the last cleaning of the heat exchanger in the lime vertical kiln is collected. The time interval between the last cleaning of the heat exchanger in the lime vertical kiln and the current time is marked as the target time period. The total running time of the heat exchanger in the lime vertical kiln within the target time period is collected and marked as the total heat exchange time value.

[0064] When the heat exchanger is recovering waste heat from flue gas, the concentration of dust in the flue gas is collected and marked as the dust content value of the flue gas. The dust content value of the flue gas is compared with the preset dust content threshold. If the dust content value of the flue gas exceeds the preset dust content threshold, it is determined that the heat exchanger is in a dust-prone state. The total time that the heat exchanger in the lime vertical kiln is in a dust-prone state within the target period is obtained and marked as the total dust-prone time value.

[0065] The dust collection impact value is obtained by averaging all flue gas dust content values ​​during the heat exchanger operation within the target time period. The cleaning decision value is calculated by weighted summation of the total heat exchange time value, the total dust collection time value, and the dust collection impact value. Specifically, each of these values ​​is assigned a pre-defined weight coefficient, and the sum of the three products is then marked as the cleaning decision value. A higher cleaning decision value indicates a greater need for timely heat exchanger cleaning to ensure residual heat recovery performance.

[0066] The cleaning decision value is compared with the preset cleaning decision threshold. If the cleaning decision value exceeds the preset cleaning decision threshold, it indicates that the heat exchanger needs to be cleaned in time to ensure the residual heat recovery performance, and a cleaning alarm signal is generated.

[0067] The working principle of this invention is as follows: During use, the internal structure of the lime vertical kiln is monitored by the vertical kiln monitoring and transmission unit. The kiln anomaly analysis unit processes the monitoring information and identifies anomalies. The adaptive adjustment unit adaptively adjusts the operation of the lime vertical kiln based on the anomaly information, achieving accurate identification and rapid response to internal anomalies, significantly improving production safety and energy utilization. Furthermore, the operation risk decision unit analyzes the operation risk status of the lime vertical kiln, strengthens the operation supervision of the lime vertical kiln when a high-risk operation signal is generated, and suspends its operation as needed to ensure the operation safety and efficiency of the lime vertical kiln. Additionally, the energy waste management assessment unit comprehensively evaluates the energy waste management status during the operation of the lime vertical kiln, and takes corresponding improvement and optimization measures when a management anomaly signal is generated to avoid large amounts of energy waste, further ensuring the energy-saving effect of the lime vertical kiln, significantly reducing the difficulty of supervision for supervisors, and demonstrating a high level of intelligence.

[0068] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. The determination of the threshold in the technical solution is based on the average value of data obtained through training with a large number of data dimensions. The preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementation methods. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An energy-saving control system for a lime vertical kiln, characterized in that, It includes a vertical kiln monitoring and transmission unit, a kiln anomaly identification unit, an adaptive adjustment unit, an operation risk decision-making unit, an energy waste management and assessment unit, and a lime vertical kiln monitoring terminal; The vertical kiln monitoring and transmission unit monitors the interior of the lime vertical kiln. The kiln anomaly analysis unit identifies and analyzes internal anomalies in the lime vertical kiln through anomaly detection algorithms. After identifying anomalies, the adaptive adjustment unit generates a matching control strategy based on the anomaly information and adaptively adjusts the operation of the lime vertical kiln according to the control strategy. The operational risk decision-making unit analyzes the operational risk status of the lime vertical kiln, generates high-risk or low-risk operation signals through analysis, and sends these signals to the lime vertical kiln monitoring terminal. The energy waste management assessment unit will comprehensively assess the energy waste management status during the operation of the lime vertical kiln, and generate a management qualified signal or a management abnormal signal accordingly, and send the management abnormal signal to the lime vertical kiln monitoring terminal. The specific analytical process of operating the risk decision-making unit includes: All abnormal information generated within a unit of time is acquired, and the number of abnormal occurrences is marked as the abnormal inspection value of the lime vertical kiln. If the abnormal inspection value of the lime vertical kiln exceeds the preset abnormal inspection threshold, a high-risk operation signal is generated; if the abnormal inspection value of the lime vertical kiln does not exceed the preset abnormal inspection threshold, an operation risk decision assessment value is obtained through lime vertical kiln operation risk decision analysis. If the operation risk decision assessment value exceeds the preset operation risk decision assessment threshold, a high-risk operation signal is generated; if the operation risk decision assessment value does not exceed the preset operation risk decision assessment threshold, a low-risk operation signal is generated. The specific analysis process for the risk management decision analysis of lime vertical kilns is as follows: After identifying the corresponding internal anomaly, a timer is started until the corresponding internal anomaly is eliminated, and the elimination time is obtained accordingly. The elimination time is then compared with the corresponding preset elimination time threshold. If the elimination time exceeds the preset elimination time threshold, the corresponding elimination time is marked as the risk elimination time. The number of times the risk elimination takes place within a unit of time is obtained and marked as the risk elimination detection value. The ratio of the elimination time to the corresponding preset elimination time threshold is marked as the elimination percentage value. The average of all elimination percentage values ​​within a unit of time is calculated to obtain the elimination time table value. The risk decision evaluation value is obtained by weighted summation of the lime vertical kiln abnormal inspection value, the risk elimination detection value, and the elimination time table value.

2. The energy-saving control system for a lime vertical kiln according to claim 1, characterized in that, The energy waste management assessment unit communicates with the waste heat utilization efficiency analysis unit and the combustion sufficiency judgment unit. The waste heat utilization efficiency analysis unit analyzes the waste heat recovery performance of the flue gas emitted by the lime vertical kiln per unit time and sends the first characteristic symbol TX-1 or TX-2 to the energy waste management assessment unit. The combustion sufficiency judgment unit judges the combustion sufficiency of the combustion chamber in the lime vertical kiln based on the concentration of combustible gases in the emitted flue gas and sends the second characteristic symbol WX-1 or WX-2 to the energy waste management assessment unit. When the energy waste management assessment unit receives TX-2∩WX-2, it generates a management qualified signal; otherwise, it generates a management abnormal signal.

3. The energy-saving control system for a lime vertical kiln according to claim 2, characterized in that, The specific analysis process of the waste heat utilization efficiency analysis unit is as follows: Several detection time points are set within a unit time period. The number of time points with inefficient waste heat utilization within a unit time period is obtained and the ratio of this number to the total number of detection time points is calculated to obtain the inefficient waste heat utilization value. If the inefficient waste heat utilization value exceeds the preset inefficient waste heat utilization threshold, the first feature symbol TX-1 is assigned.

4. The energy-saving control system for a lime vertical kiln according to claim 3, characterized in that, If the waste heat utilization inefficiency value does not exceed the preset waste heat utilization inefficiency threshold, the waste heat utilization efficiency value is calculated by weighted summation of the waste heat utilization inefficiency value, waste heat utilization efficiency value, and waste heat utilization inefficiency amplitude value. If the waste heat utilization efficiency value exceeds the preset waste heat utilization efficiency threshold, the first feature symbol TX-1 is assigned; if the waste heat utilization efficiency value does not exceed the preset waste heat utilization efficiency threshold, the first feature symbol TX-2 is assigned.

5. The energy-saving control system for a lime vertical kiln according to claim 2, characterized in that, The specific analysis process of the combustion completeness judgment unit is as follows: the total time that the combustion chamber is in an incomplete combustion state within a unit time is obtained and marked as the incomplete combustion condition value. The average value of all combustible comprehensive coefficients within a unit time is calculated to obtain the combustion assessment abnormal value. If the incomplete combustion condition value or the combustion assessment abnormal value exceeds the corresponding preset threshold, the second feature symbol WX-1 is assigned; otherwise, the second feature symbol WX-2 is assigned.

6. The energy-saving control system for a lime vertical kiln according to claim 3, characterized in that, The waste heat utilization efficiency analysis unit is connected to the heat exchanger cleaning decision unit. When the heat exchanger cleaning decision unit receives the first feature symbol TX-1, it generates a cleaning alarm signal. When it receives the first feature symbol TX-2, it determines whether to generate a cleaning alarm signal through cleaning decision analysis. When a cleaning alarm signal is generated, it is sent to the lime vertical kiln monitoring terminal.

7. The energy-saving control system for a lime vertical kiln according to claim 6, characterized in that, The specific analysis process of cleaning decision analysis is as follows: The time of the last cleaning of the heat exchanger in the lime vertical kiln is collected. The time interval between the last cleaning of the heat exchanger in the lime vertical kiln and the current time is marked as the target time period. The total running time of the heat exchanger in the lime vertical kiln within the target time period is collected and marked as the total heat exchange time value. When the heat exchanger is recovering waste heat from flue gas, the concentration of dust in the flue gas is collected and marked as the dust content value of the flue gas. The dust content value of the flue gas is compared with the preset dust content threshold. If the dust content value of the flue gas exceeds the preset dust content threshold, it is determined that the heat exchanger is in a dust-prone state. The total time that the heat exchanger in the lime vertical kiln is in a dust-prone state within the target period is obtained and marked as the total dust-prone time value. The dust attachment impact value is obtained by averaging all flue gas dust content values ​​during the heat exchanger operation within the target time period. The cleaning decision value is obtained by weighted summation of the total heat exchange time value, the total dust attachment time value, and the dust attachment impact value. The cleaning decision value is compared with the preset cleaning decision threshold. If the cleaning decision value exceeds the preset cleaning decision threshold, a cleaning alarm signal is generated.

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