Intelligent monitoring system of desulfurizing absorption tower

Abstract

The invention discloses an intelligent monitoring system of a desulfurization absorption tower, which relates to the technical field of desulfurization absorption tower monitoring and comprises a data acquisition unit, an operation analysis unit, a desulfurization analysis unit, a comprehensive analysis unit and an abnormal alarm unit, through comprehensive evaluation of the pH value, chloride ion concentration and sulfite concentration of the slurry, desulfurization reaction effectiveness can be quantified, and dynamic adjustment of limestone dosage can be guided, so that desulfurization process parameters are optimized, the service life of the slurry is prolonged, and by fusing a stable operation index, a desulfurization reaction index and sulfur dioxide absorption data, the desulfurization efficiency is improved. The comprehensive absorption index model of the desulfurization absorption tower is constructed, global evaluation of the desulfurization efficiency is realized, the accuracy of the monitoring result is improved, the limitation of traditional single index evaluation is avoided through multi-factor correlation analysis, and finally, through the real-time early warning function of the abnormity alarm unit, the safety of the desulfurization absorption tower is improved. When the desulfurization system is unstable in operation or low in absorption efficiency, a worker can be quickly notified to intervene.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of desulfurization absorption tower monitoring, and particularly relates to an intelligent monitoring system for a desulfurization absorption tower. BACKGROUND

[0002] The desulfurization absorption tower is a key environmental protection equipment in industrial production for removing sulfur dioxide in flue gas, which sprays the internal slurry through a circulating pump to make sulfur dioxide in the flue gas react with the slurry, so as to achieve the purpose of desulfurization and purification, and is widely used in the flue gas treatment process of power, chemical and other industries; in order to ensure the stable and efficient operation of the desulfurization absorption tower, it is of great significance to monitor its key parameters in real time, because the stable operation of the circulating pump, the desulfurization reaction efficiency of the slurry and the absorption effect of sulfur dioxide directly affect the overall performance of the desulfurization system, and once an abnormality occurs, it may lead to problems such as decreased desulfurization efficiency, damaged equipment and even excessive emission of pollutants.

[0003] However, the traditional desulfurization absorption tower monitoring method often relies on manual sampling or single sensor for data acquisition, which not only lacks comprehensive data acquisition and real-time performance, but also lacks effective data preprocessing mechanism, resulting in low data quality and easy interference, and the traditional method often only evaluates through a single index, which cannot comprehensively analyze the influence of the circulating pump operation state, the slurry reaction condition and other factors on the desulfurization effect.

[0004] In view of the above technical defects, the present application provides a solution. SUMMARY

[0005] The present application aims to solve the problem that the traditional desulfurization absorption tower monitoring method often relies on manual sampling or single sensor for data acquisition, which not only lacks comprehensive data acquisition and real-time performance, but also lacks effective data preprocessing mechanism, resulting in low data quality and easy interference, and the traditional method often only evaluates through a single index, which cannot comprehensively analyze the influence of the circulating pump operation state, the slurry reaction condition and other factors on the desulfurization effect.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme: an intelligent monitoring system for a desulfurization absorption tower, a data acquisition unit, an operation analysis unit, a desulfurization analysis unit, a comprehensive analysis unit and an abnormal alarm unit;

[0007] The data acquisition unit is used to collect the stable data of the circulating pump, the reaction data of the slurry and the absorption data of sulfur dioxide gas on the desulfurization absorption tower through the sensor array arranged on the desulfurization absorption tower, and to preprocess the collected data, and then send the stable data to the operation analysis unit, the reaction data to the desulfurization analysis unit and the absorption data to the comprehensive analysis unit;

[0008] The running analysis unit is used to obtain stable data of the circulating pump on the desulfurization absorption tower and perform analysis and calculation to obtain a stable running index of the circulating pump, which is used to reflect the running condition of the circulating pump.

[0009] The desulfurization analysis unit is used to obtain reaction data of the slurry on the desulfurization absorption tower and perform analysis and calculation to obtain a desulfurization reaction index of the slurry on the desulfurization absorption tower, which is used to reflect the desulfurization effect of the slurry in the desulfurization absorption tower.

[0010] The comprehensive analysis unit is used to obtain absorption data of sulfur dioxide gas on the desulfurization absorption tower and perform analysis and calculation in combination with the stable running index and the desulfurization reaction index to obtain a comprehensive absorption index of the desulfurization absorption tower, which is used to reflect the absorption efficiency of the desulfurization absorption tower on sulfur dioxide gas.

[0011] The abnormal alarm unit is used to send an abnormal alarm to the intelligent monitoring terminal when an abnormal condition occurs in the intelligent monitoring process of the desulfurization absorption tower, prompting the staff to handle the abnormal condition.

[0012] Further, the sensor array includes a pressure sensor, a vibration sensor, a temperature sensor, a pH electrode, a chloride ion sensor, a sulfite sensor, and a gas concentration sensor. The chloride ion sensor uses a chloride ion selective electrode that can reversibly react with chloride ions and generate a potential change proportional to the concentration of chloride ions. The concentration of chloride ions is calculated based on the output potential signal of the electrode. The sulfite sensor analyzes and calculates the concentration of sulfite based on the absorbance of sulfite and its derivatives at a specific wavelength and compares it with a standard curve. The gas concentration sensor uses a pump suction sampling method and configures a sulfur dioxide flue gas specific sensor to analyze the input and output sulfur dioxide content and monitor the sulfur dioxide concentration in real time.

[0013] Further, the stable data includes output pressure, vibration intensity, and temperature data when the circulating pump is running. The reaction data includes pH value, chloride ion concentration, and sulfite concentration data of the slurry in the desulfurization absorption tower. The absorption data includes sulfur dioxide concentration data in the input and exhaust gas of the desulfurization absorption tower.

[0014] Further, the pre-processing process of the collected data is as follows: the collected data is cleaned, then the abnormal values of the data are screened through abnormal value detection, and then the data quality is improved through data smoothing, data conversion, and feature selection.

[0015] Further, the calculation process of the stable running index of the circulating pump is as follows:

[0016] S11, obtain output pressure, vibration intensity, and temperature data when the circulating pump is running and perform analysis and calculation.

[0017] S12, calculate the stable operation index STB of the circulating pump according to the following formula:

[0018]

[0019] Wherein, P is the output pressure when the circulating pump is running, P max is the preset upper limit pressure threshold of the circulating pump, P max is the preset lower limit pressure threshold of the circulating pump, V is the vibration intensity of the circulating pump, V max is the preset upper limit vibration threshold of the circulating pump, V min is the preset lower limit vibration threshold of the circulating pump, T is the temperature of the circulating pump, T max is the preset upper limit temperature threshold of the circulating pump, T min is the preset lower limit temperature threshold of the circulating pump, a is the preset pressure weight coefficient of the circulating pump, b is the preset vibration weight coefficient of the circulating pump, and c is the preset temperature weight coefficient of the circulating pump.

[0020] S13, obtain the preset stable operation upper threshold STB max and the stable operation lower threshold STB min , compare and analyze with the stable operation index STB, when STB∈[STB min , STB max ], it is indicated that the circulating pump is running stably, when , it is indicated that the circulating pump is running unstably, and an abnormal alarm is sent to the intelligent monitoring terminal, so that the staff can timely dispose the abnormal running condition of the circulating pump.

[0021] Further, the calculation process of the desulfurization reaction index of the desulfurization absorption tower slurry is as follows:

[0022] S21, obtain and analyze and calculate the pH value, chloride ion concentration and sulfite concentration data of the slurry in the desulfurization absorption tower;

[0023] S22, calculate the desulfurization reaction index RXN of the slurry in the desulfurization absorption tower according to the following formula:

[0024]

[0025] Wherein, pH is the pH value of the slurry in the desulfurization absorption tower, pH min is the preset lower limit pH threshold of the slurry in the desulfurization absorption tower, pH max is the preset upper limit pH threshold of the slurry in the desulfurization absorption tower, cl - is the chloride ion concentration of the slurry in the desulfurization absorption tower, SO - is the sulfite concentration of the slurry in the desulfurization absorption tower, cl -e is a preset standard chloride ion concentration of the slurry in the desulfurization absorption tower, SO - e is a preset standard sulfite concentration of the slurry in the desulfurization absorption tower;

[0026] S23, a preset desulfurization reaction threshold RXN is acquired th , and a comparison analysis is performed with the desulfurization reaction index RXN, when RXN>RXN th , it indicates that the desulfurization effect of the slurry in the desulfurization absorption tower is high, and when RXN≤RXN th , it indicates that the desulfurization effect of the slurry in the desulfurization absorption tower is low, an abnormal alarm is sent to the intelligent monitoring terminal, and a staff is arranged to adjust the limestone addition amount in the slurry of the desulfurization absorption tower or to replace the slurry.

[0027] Further, the calculation process of the comprehensive absorption index of the desulfurization absorption tower is as follows:

[0028] S31, absorption data of sulfur dioxide gas of the desulfurization absorption tower are acquired, and a stable operation index and a desulfurization reaction index are combined for analysis and calculation;

[0029] S32, the comprehensive absorption index CA of the desulfurization absorption tower is calculated according to the following formula:

[0030]

[0031] , wherein C out is a sulfur dioxide concentration in discharged gas of the desulfurization absorption tower, C in is a sulfur dioxide concentration in input gas of the desulfurization absorption tower, STB is a stable operation index of a circulating pump, and RXN is a desulfurization reaction index of the slurry of the desulfurization absorption tower;

[0032] S33, a preset upper limit threshold CA max and a lower limit threshold CA min of the comprehensive absorption are acquired, and a comparison analysis is performed with the comprehensive absorption index CA, when CA∈[CA min , CA max ], it indicates that the absorption efficiency of the desulfurization absorption tower for sulfur dioxide gas is high, and the desulfurization operation can be continued, and when , it indicates that the absorption efficiency of the desulfurization absorption tower for sulfur dioxide gas is low, an abnormal alarm is sent to the intelligent monitoring terminal, and a staff is arranged to comprehensively overhaul the desulfurization absorption tower.

[0033] According to the above, since the above technical scheme is adopted, the beneficial effects of the present application are:

[0034] The intelligent monitoring system of the desulfurization absorption tower can accurately reflect the equipment operation state through dynamic calculation of the circulating pump stable operation index by the operation analysis unit, and can timely trigger an alarm when the circulating pump is abnormal in combination with comparative analysis of the preset threshold, so as to avoid the decrease of the desulfurization efficiency caused by equipment failure. Meanwhile, the desulfurization analysis unit can quantize the desulfurization reaction effect and guide the dynamic adjustment of the limestone adding amount through comprehensive evaluation of the slurry pH value, chloride ion concentration and sulfite concentration, so as to optimize the desulfurization process parameters and prolong the service life of the slurry. In addition, the comprehensive analysis unit fuses the stable operation index, the desulfurization reaction index and the sulfur dioxide absorption data to build a comprehensive absorption index model of the desulfurization absorption tower, realizes the global evaluation of the desulfurization efficiency, improves the accuracy of the monitoring result, avoids the limitation of the traditional single index evaluation through multi-factor correlation analysis, and finally realizes the real-time early warning function of the abnormal alarm unit, so as to rapidly inform the staff to intervene when the desulfurization system is unstable or the absorption efficiency is low, thereby reducing the risk of equipment damage and the possibility of exceeding the standard of pollutant emission. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 The system flow schematic diagram of the present application is shown. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] Embodiment:

[0038] As Figure 1As shown, an intelligent monitoring system for a desulfurization absorption tower, first, the data acquisition unit through the deployment of sensor array on the desulfurization absorption tower, sensor array includes pressure sensor, vibration sensor, temperature sensor, pH electrode, chloride ion sensor, sulfite sensor and gas concentration sensor, chloride ion sensor by using chloride ion selective electrode, the electrode can be reversible reaction with chloride ion, and produce potential change proportional to the concentration of chloride ion, according to the output potential signal of electrode to analyze and calculate the concentration of chloride ion, sulfite sensor by based on the absorbance of sulfite and its derivatives at a certain wavelength, and compared with standard curve, analysis and calculation of sulfite concentration, gas concentration sensor adopts pump suction sampling method, configure sulfur dioxide flue gas special sensor to analyze the input and output of sulfur dioxide content, and real-time monitoring of sulfur dioxide concentration, the stable data of circulating pump on the desulfurization absorption tower, slurry reaction data and sulfur dioxide gas absorption data are collected, the stable data includes the output pressure, vibration intensity and temperature data of circulating pump when running, the reaction data includes the pH value, chloride ion concentration and sulfite concentration data of slurry in the desulfurization absorption tower, and the absorption data includes the sulfur dioxide concentration data of input and discharge gas in the desulfurization absorption tower, and the collected data is pretreated, then the stable data is sent to the running analysis unit, the reaction data is sent to the desulfurization analysis unit, and the absorption data is sent to the comprehensive analysis unit, the process of pretreatment of the collected data is: cleaning the collected data, (missing value interpolation filling or deletion, repeated data elimination), then, the data abnormal value is screened by abnormal value detection (Z-score / IQR statistical method and physical significance review correction), then, the data quality is improved by data smoothing (moving average / exponential smoothing filter), data conversion (logarithmic conversion / discretization) and feature selection (redundancy analysis or PCA dimension reduction).

[0039] Then, the stable data of circulating pump on the desulfurization absorption tower is obtained by running analysis unit, and analyzed and calculated to obtain the stable running index of circulating pump, which is used to reflect the running condition of circulating pump.

[0040] The calculation process of the stable running index of circulating pump is as follows:

[0041] S11, the output pressure, vibration intensity and temperature data of circulating pump when running are obtained and analyzed and calculated;

[0042] S12, the stable running index STB of circulating pump is calculated according to the following formula:

[0043]

[0044] Wherein, P is the output pressure of circulating pump when running, P maxP is the preset upper limit pressure threshold for the circulating pump. max V is the preset lower limit pressure threshold of the circulating pump, and V is the vibration intensity of the circulating pump. max V is the preset upper limit vibration threshold for the circulating pump. min The preset lower limit vibration threshold for the circulating pump is T, where T is the temperature of the circulating pump. max T is the preset upper limit temperature threshold for the circulating pump. min Here, is the preset lower limit temperature threshold of the circulating pump, 'a' is the preset pressure weighting coefficient of the circulating pump, 'b' is the preset vibration weighting coefficient of the circulating pump, and 'c' is the preset temperature weighting coefficient of the circulating pump, and 'a+b+c=1'.

[0045] S13. Obtain the preset stable operation upper limit threshold STB. max and the lower limit threshold for stable operation STB min A comparative analysis was conducted with the stable operating index STB. When STB ∈ [STB], min STB max When [the value is] , it indicates that the circulating pump is operating stably. If the abnormal operation of the circulating pump is unstable, it will trigger the abnormal alarm unit to send an abnormal alarm to the intelligent monitoring terminal, so that the staff can deal with the abnormal operation of the circulating pump in a timely manner. The specific handling is to send staff to the site to inspect and repair the circulating pump.

[0046] Subsequently, the reaction data of the slurry in the desulfurization absorption tower was obtained through the desulfurization analysis unit and analyzed and calculated to obtain the desulfurization reaction index of the slurry in the desulfurization absorption tower, which is used to reflect the desulfurization efficiency of the slurry in the desulfurization absorption tower.

[0047] The calculation process for the desulfurization reaction index of the desulfurization absorption tower slurry is as follows:

[0048] S21. Obtain and analyze data on pH value, chloride ion concentration, and sulfite concentration of the slurry in the desulfurization absorption tower.

[0049] S22. Calculate the desulfurization reaction index RXN of the desulfurization absorption tower slurry according to the following formula:

[0050]

[0051] Wherein, pH refers to the pH value of the slurry inside the desulfurization absorption tower. min The preset lower limit pH threshold for the slurry in the desulfurization absorption tower, pH max The preset upper limit pH threshold for the slurry in the desulfurization absorption tower, cl - The chloride ion concentration of the slurry in the desulfurization absorption tower, SO - The sulfite concentration in the slurry inside the desulfurization absorption tower, cl - eThe preset standard chloride ion concentration in the slurry of the desulfurization absorption tower, SO - e The preset standard sulfite concentration of the slurry in the desulfurization absorption tower;

[0052] S23. Obtain the preset desulfurization reaction threshold RXN th A comparative analysis was conducted with the desulfurization reaction index RXN. When RXN > RXN th When RXN ≤ RXN, it indicates that the desulfurization efficiency of the slurry in the desulfurization absorption tower is high. th If the slurry in the desulfurization absorption tower is low, it will trigger the abnormal alarm unit to send an abnormal alarm to the intelligent monitoring terminal, and arrange for staff to adjust the amount of limestone added to the slurry in the desulfurization absorption tower or to replace the slurry.

[0053] Finally, the absorption data of sulfur dioxide gas on the desulfurization absorption tower is obtained through the comprehensive analysis unit, and the comprehensive absorption index of the desulfurization absorption tower is obtained by combining the stable operation index and the desulfurization reaction index to reflect the efficiency of the desulfurization absorption tower in absorbing sulfur dioxide gas.

[0054] The calculation process for the comprehensive absorption index of the desulfurization absorption tower is as follows:

[0055] S31. Obtain and analyze the sulfur dioxide concentration data in the input and exhaust gases of the desulfurization absorption tower.

[0056] S32. Calculate the comprehensive absorption index CA of the desulfurization absorption tower according to the following formula:

[0057]

[0058] Among them, C out C represents the sulfur dioxide concentration in the exhaust gas from the desulfurization absorption tower. in , where is the sulfur dioxide concentration in the input gas to the desulfurization absorption tower, STB is the stable operation index of the circulating pump, and RXN is the desulfurization reaction index of the slurry in the desulfurization absorption tower.

[0059] S33. Obtain the preset upper limit threshold CA for comprehensive absorption. max and the lower limit threshold of comprehensive absorption (CA) min A comparative analysis was conducted with the comprehensive absorption index CA, when CA∈[CA] min CA max When the reading is [missing information], it indicates that the desulfurization absorption tower has a high absorption efficiency for sulfur dioxide gas, and desulfurization operation can continue. If the alarm signal is triggered, it indicates that the desulfurization absorption tower has low absorption efficiency for sulfur dioxide gas. This will trigger the abnormal alarm unit to send an abnormal alarm to the intelligent monitoring terminal and arrange for staff to conduct a comprehensive overhaul of the desulfurization absorption tower.

[0060] This invention uses a dynamic calculation of the circulating pump's stable operation index by an operational analysis unit to accurately reflect the equipment's operating status. Combined with comparative analysis of preset thresholds, it can promptly trigger alarms when the circulating pump malfunctions, preventing a decrease in desulfurization efficiency due to equipment failure. Simultaneously, the desulfurization analysis unit, through comprehensive evaluation of slurry pH, chloride ion concentration, and sulfite concentration, can quantify the desulfurization reaction effect and guide the dynamic adjustment of limestone dosage, thereby optimizing desulfurization process parameters and extending slurry lifespan. Furthermore, the comprehensive analysis unit, by integrating the stable operation index, desulfurization reaction index, and sulfur dioxide absorption data, constructs a comprehensive absorption index model for the desulfurization absorption tower, achieving a global assessment of desulfurization efficiency. This not only improves the accuracy of monitoring results but also avoids the limitations of traditional single-indicator assessments through multi-factor correlation analysis. Finally, the real-time early warning function of the abnormal alarm unit can quickly notify staff to intervene when the desulfurization system experiences operational instability or low absorption efficiency, thereby reducing the risk of equipment damage and the possibility of exceeding pollutant emission standards.

[0061] The size of the interval and threshold is set to facilitate comparison. The size of the threshold depends on the amount of sample data and the number of bases set by those skilled in the art for each set of sample data; as long as it does not affect the ratio between the parameter and the quantized value.

[0062] The above formulas are all dimensionless calculations. The formulas are derived from software simulations based on a large amount of collected data to obtain the most recent real-world results. The preset parameters in the formulas are set by those skilled in the art according to the actual situation.

[0063] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An intelligent monitoring system for a desulfurization absorption tower, characterized in that, include: The system includes a data acquisition unit, an operation analysis unit, a desulfurization analysis unit, a comprehensive analysis unit, and an anomaly alarm unit. The data acquisition unit is used to collect stable data of the circulating pump, reaction data of the slurry, and absorption data of sulfur dioxide gas on the desulfurization absorption tower through a sensor array deployed on the desulfurization absorption tower. The acquired data is preprocessed, and then the stable data is sent to the operation analysis unit, the reaction data is sent to the desulfurization analysis unit, and the absorption data is sent to the comprehensive analysis unit. The operation analysis unit is used to obtain stable data of the circulating pump on the desulfurization absorption tower, and to perform analysis and calculation to obtain the stable operation index of the circulating pump, which is used to reflect the operating status of the circulating pump. The desulfurization analysis unit is used to obtain the reaction data of the slurry in the desulfurization absorption tower, and to perform analysis and calculation to obtain the desulfurization reaction index of the slurry in the desulfurization absorption tower, which is used to reflect the desulfurization efficiency of the slurry in the desulfurization absorption tower. The comprehensive analysis unit is used to obtain the absorption data of sulfur dioxide gas on the desulfurization absorption tower, and to analyze and calculate the comprehensive absorption index of the desulfurization absorption tower by combining the stable operation index and the desulfurization reaction index. This index reflects the efficiency of the desulfurization absorption tower in absorbing sulfur dioxide gas. The abnormal alarm unit is used to send an abnormal alarm to the intelligent monitoring terminal when an abnormal situation occurs during the intelligent monitoring of the desulfurization absorption tower, so as to prompt the staff to handle the abnormal situation.

2. The intelligent monitoring system for a desulfurization absorption tower according to claim 1, characterized in that, The sensor array includes a pressure sensor, a vibration sensor, a temperature sensor, a pH electrode, a chloride ion sensor, a sulfite sensor, and a gas concentration sensor. The chloride ion sensor uses a chloride ion selective electrode that can reversibly react with chloride ions and generate a potential change proportional to the chloride ion concentration. The chloride ion concentration is calculated based on the output potential signal of the electrode. The sulfite sensor calculates the sulfite concentration by analyzing the absorbance of sulfites and their derivatives at specific wavelengths and comparing it with a standard curve. The gas concentration sensor uses a pump-suction sampling method and is equipped with a dedicated sulfur dioxide flue gas sensor to analyze the input and output sulfur dioxide content and monitor the sulfur dioxide concentration in real time.

3. The intelligent monitoring system for a desulfurization absorption tower according to claim 1, characterized in that, The stability data includes the output pressure, vibration intensity, and temperature data of the circulating pump during operation; the reaction data includes the pH value, chloride ion concentration, and sulfite concentration data of the slurry in the desulfurization absorption tower; and the absorption data includes the sulfur dioxide concentration data in the input and output gases of the desulfurization absorption tower.

4. The intelligent monitoring system for a desulfurization absorption tower according to claim 1, characterized in that, The preprocessing process for the collected data is as follows: the collected data is cleaned, then outlier values ​​are screened through outlier detection, and finally, the quality of the collected data is improved through data smoothing, data transformation, and feature selection.

5. The intelligent monitoring system for a desulfurization absorption tower according to claim 1, characterized in that, The calculation process for the stable operation index of the circulating pump is as follows: S11. Obtain and analyze the output pressure, vibration intensity, and temperature data of the circulating pump during operation. S12. Calculate the stable operation index STB of the circulating pump according to the following formula: Where P is the output pressure of the circulating pump during operation, P max P is the preset upper limit pressure threshold for the circulating pump. max V is the preset lower limit pressure threshold of the circulating pump, and V is the vibration intensity of the circulating pump. max V is the preset upper limit vibration threshold for the circulating pump. min The preset lower limit vibration threshold for the circulating pump is T, where T is the temperature of the circulating pump. max T is the preset upper limit temperature threshold for the circulating pump. min , where a is the preset lower limit temperature threshold of the circulating pump, b is the preset pressure weighting coefficient of the circulating pump, and c is the preset temperature weighting coefficient of the circulating pump. S13. Obtain the preset stable operation upper limit threshold STB. max and the lower limit threshold for stable operation STB min A comparative analysis was conducted with the stable operating index STB. When STB ∈ [STB], min STB max When [the value is] , it indicates that the circulating pump is operating stably. If the pump fails to operate normally, it indicates that the circulating pump is not running stably and will send an alarm to the intelligent monitoring terminal, allowing staff to promptly address any abnormalities in the pump's operation.

6. The intelligent monitoring system for a desulfurization absorption tower according to claim 1, characterized in that, The calculation process for the desulfurization reaction index of the desulfurization absorption tower slurry is as follows: S21. Obtain and analyze data on pH value, chloride ion concentration, and sulfite concentration of the slurry in the desulfurization absorption tower. S22. Calculate the desulfurization reaction index RXN of the desulfurization absorption tower slurry according to the following formula: Wherein, pH refers to the pH value of the slurry in the desulfurization absorption tower. min The preset lower limit pH threshold for the slurry in the desulfurization absorption tower, pH max The preset upper limit pH threshold for the slurry in the desulfurization absorption tower, cl - The chloride ion concentration of the slurry in the desulfurization absorption tower, SO - The sulfite concentration in the slurry inside the desulfurization absorption tower, cl - e The preset standard chloride ion concentration in the slurry of the desulfurization absorption tower, SO - e The preset standard sulfite concentration of the slurry in the desulfurization absorption tower; S23. Obtain the preset desulfurization reaction threshold RXN th A comparative analysis was conducted with the desulfurization reaction index RXN. When RXN > RXN th When RXN ≤ RXN, it indicates that the desulfurization efficiency of the slurry in the desulfurization absorption tower is high. th If the slurry in the desulfurization absorption tower is ineffective, an abnormal alarm will be sent to the intelligent monitoring terminal, and staff will be arranged to adjust the amount of limestone added to the slurry or replace the slurry.

7. The intelligent monitoring system for a desulfurization absorption tower according to claim 1, characterized in that, The calculation process for the comprehensive absorption index of the desulfurization absorption tower is as follows: S31. Obtain the absorption data of sulfur dioxide gas on the desulfurization absorption tower, and analyze and calculate it in combination with the stable operation index and the desulfurization reaction index. S32. Calculate the comprehensive absorption index CA of the desulfurization absorption tower according to the following formula: Among them, C out C represents the sulfur dioxide concentration in the exhaust gas from the desulfurization absorption tower. in , where is the sulfur dioxide concentration in the input gas to the desulfurization absorption tower, STB is the stable operation index of the circulating pump, and RXN is the desulfurization reaction index of the slurry in the desulfurization absorption tower. S33. Obtain the preset upper limit threshold CA for comprehensive absorption. max and the lower limit threshold of comprehensive absorption (CA) min A comparative analysis was conducted with the comprehensive absorption index CA, when CA∈[CA] min CA max When the reading is [missing information], it indicates that the desulfurization absorption tower has a high absorption efficiency for sulfur dioxide gas, and desulfurization operation can continue. CA max If the signal is positive, it indicates that the desulfurization absorption tower has low absorption efficiency for sulfur dioxide gas. An abnormal alarm will be sent to the intelligent monitoring terminal, and staff will be arranged to carry out a comprehensive overhaul of the desulfurization absorption tower.

Images