A flue blockage prevention method, device, electronic equipment and computer readable medium

Abstract

Embodiments of the present application provide a flue blockage prevention method and device, electronic equipment and computer readable medium. The method comprises: obtaining the smoke dust concentration and gas flow rate of the first gas discharged at the flue outlet; determining a target time period based on the smoke dust concentration and the gas flow rate; and sending the second gas from the flue outlet to the flue every target time period. The gas flow direction of the second gas is opposite to that of the first gas. In the embodiments of the present application, the smoke dust concentration and gas flow rate of the first gas discharged at the flue outlet are obtained, and the target time period is determined based on the smoke dust concentration and the gas flow rate. Then, the second gas is sent from the flue outlet to the flue every target time period to blow off the smoke dust attached to the flue, thereby preventing the flue from being blocked. In addition, by blowing off the smoke dust attached to the flue, the concentration of nitrogen oxides detected by the nitrogen oxides detector is prevented from having errors.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of flue gas pollutant control, and in particular to a flue blockage prevention method and device, electronic equipment and a computer readable medium. BACKGROUND

[0002] Nowadays, nitrogen oxides (NOx) discharged by industrial production have become one of the main atmospheric pollutants, causing serious environmental pollution problems. In order to control the emission of NOx, the selective catalytic reduction (SCR) process is usually used as the main denitration method to treat NOx. The SCR process sprays ammonia gas, so that the ammonia gas reacts with NOx to generate nitrogen gas (N2) harmless to the environment, thereby completing the removal of NOx.

[0003] After the removal of NOx, the generated N2 is discharged through a flue, and a nitrogen oxide detector is arranged on the flue to detect the concentration of nitrogen oxides in the exhaust gas, so as to determine the NOx removal effect. However, the above-mentioned dust in the exhaust gas may adhere to the flue and block the flue, and cause errors in the concentration of nitrogen oxides detected by the nitrogen oxide detector. SUMMARY

[0004] The embodiments of the present application provide a flue blockage prevention method, device, electronic equipment and computer storage medium to solve the problem that the dust generated in the denitration process may adhere to the flue and block the flue.

[0005] To solve the above technical problems, the present application is implemented as follows:

[0006] In a first aspect, the embodiments of the present application provide a flue blockage prevention method, comprising:

[0007] obtaining the dust concentration and the gas flow rate of the first gas discharged at the flue outlet;

[0008] determining a target time length based on the dust concentration and the gas flow rate;

[0009] sending a second gas into the flue from the flue outlet every interval of the target time length;

[0010] wherein the gas flow direction of the second gas is opposite to that of the first gas.

[0011] In a second aspect, the embodiments of the present application also provide a flue blockage prevention device comprising a sensor, a flow rate detector, a processor and a blower, wherein the sensor comprises a dust detector.

[0012] The dust detector is configured to obtain the dust concentration of the first gas discharged at the flue outlet.

[0013] the flow rate detector, configured to acquire the smoke dust concentration and the gas flow rate of the first gas discharged from the flue outlet;

[0014] the processor, configured to determine a target time length based on the smoke dust concentration and the gas flow rate;

[0015] the blower, configured to send the second gas to the flue from the flue outlet every interval of the target time length;

[0016] wherein the gas flow direction of the second gas is opposite to the gas flow direction of the first gas.

[0017] In a third aspect, an embodiment of the present application further provides an electronic device, including a processor, a memory, and a computer program stored in the memory and executable on the processor, and when the computer program is executed by the processor, the steps of the flue blockage prevention method in the first aspect are implemented.

[0018] In a fourth aspect, an embodiment of the present application further provides a computer readable storage medium, and the computer readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the flue blockage prevention method in the first aspect are implemented.

[0019] In the embodiment of the present application, the smoke dust concentration and the gas flow rate of the first gas discharged from the flue outlet are acquired, the target time length is determined based on the smoke dust concentration and the gas flow rate, and then the second gas is sent to the flue from the flue outlet every interval of the target time length, so as to blow off the smoke dust attached to the flue and prevent the flue from being blocked. In addition, by blowing off the smoke dust attached to the flue, the error of the concentration of nitrogen oxides detected by the nitrogen oxides detector is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a flowchart of the flue blockage prevention method provided by the embodiment of the present application;

[0021] Figure 2 is one of the application flowcharts of the flue blockage prevention method provided by the embodiment of the present application;

[0022] Figure 3 is a schematic diagram of the first concentration curve provided by the embodiment of the present application;

[0023] Figure 4 is a schematic diagram of the second concentration curve provided by the embodiment of the present application;

[0024] Figure 5 is the second application flowchart of the flue blockage prevention method provided by the embodiment of the present application;

[0025] Figure 6is a structural schematic diagram of a flue blockage prevention device provided by an embodiment of the present application;

[0026] Figure 7 is a structural schematic diagram of a flue blockage prevention device provided by an embodiment of the present application;

[0027] Figure 8 is a structural schematic diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0028] 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 some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0029] Please refer to Figure 1 , Figure 1 is a flowchart of a flue blockage prevention method provided by an embodiment of the present application, as shown in Figure 1 The embodiment provides a flue blockage prevention method, and the method comprises the following steps.

[0030] S101, obtaining a smoke dust concentration and a gas flow rate of a first gas discharged at a flue outlet.

[0031] It should be noted that the flue blockage prevention method provided by the embodiment of the present application is applied to a flue blockage prevention device, and the above flue blockage prevention device comprises an inductor and a flow rate detector, the inductor comprises a smoke dust detector, and the specific structure of the flue blockage prevention device can be referred to subsequent embodiments.

[0032] In this step, the smoke dust detector is used to detect the first gas discharged at the flue outlet to obtain the smoke dust concentration, and it should be understood that the smoke dust concentration includes but is not limited to the concentration of PM2.5 and the concentration of PM10. The flow rate detector is used to detect the first gas discharged at the flue outlet to obtain the gas flow rate of the first gas.

[0033] S102, determining a target time length based on the smoke dust concentration and the gas flow rate.

[0034] In this step, after obtaining the smoke dust concentration and the gas flow rate, the target time length can be determined based on the smoke dust concentration and the gas flow rate, and the specific technical solutions can be referred to subsequent embodiments.

[0035] S103, sending a second gas into the flue from the flue outlet every interval of the target time length.

[0036] It should be noted that the flue blockage prevention device applying the flue blockage prevention method provided in the embodiments of the present application further comprises a blower. The blower can be a fan.

[0037] In this step, the blower is controlled to send the second gas into the flue from the flue outlet at a target interval to blow off the flue dust attached to the flue and prevent the flue from being blocked, wherein the gas flow direction of the second gas is opposite to that of the first gas. The target interval can also be understood as a blowing frequency. The blower is controlled to work at the blowing frequency, i.e., the blower is controlled to work intermittently to send the second gas into the flue from the flue outlet.

[0038] In the embodiments of the present application, the flue dust concentration and the gas flow rate of the first gas discharged from the flue outlet are acquired; the target interval is determined based on the flue dust concentration and the gas flow rate; and then the second gas is sent into the flue from the flue outlet at the target interval to blow off the flue dust attached to the flue and prevent the flue from being blocked. In addition, by blowing off the flue dust attached to the flue, the error of the concentration of nitrogen oxides detected by the nitrogen oxides detector is avoided.

[0039] Optionally, the determination of the target interval based on the flue dust concentration and the gas flow rate comprises:

[0040] The flue dust concentration and the gas flow rate are input into a preset target model to obtain the target interval.

[0041] In this embodiment, the machine learning model can be used to determine the target interval.

[0042] Specifically, the preset machine learning model is iteratively trained using a training set. Optionally, the training set comprises flue dust concentration training data, gas flow rate training data and time interval data, and the machine learning model comprises but is not limited to a convolutional neural network (CNN) model and a feedforward neural network (FNN).

[0043] After the machine learning model is iterated for a preset number of times, it is determined that the machine learning model training is completed, and a target model is obtained. Then the flue dust concentration and the gas flow rate are input into the preset target model to obtain the target interval.

[0044] For the convenience of understanding the technical scheme of the above embodiments as a whole, please refer to Figure 2 As shown in Figure 2 the flue dust concentration and the gas flow rate of the first gas discharged from the flue outlet are detected by a flue dust detector and a flow rate detector respectively; the flue dust concentration and the gas flow rate are input into a target model to obtain a target interval; and the blower is controlled to send the second gas into the flue from the flue outlet at the target interval.

[0045] Optionally, the method further comprises:

[0046] acquiring the nitrogen oxide concentration of the first gas discharged at the flue outlet;

[0047] in the case that the nitrogen oxide concentration of the first gas discharged at the flue outlet is not within the preset concentration interval, determining the predicted nitrogen oxide concentration of the first gas discharged at the flue outlet according to the first concentration curve.

[0048] It should be noted that the inductor in the above flue blockage prevention device further comprises a nitrogen oxide concentration detector, and the nitrogen oxide concentration detector is arranged at the flue outlet.

[0049] In this embodiment, the nitrogen oxide concentration of the first gas discharged at the flue outlet is acquired by the nitrogen oxide concentration detector arranged at the flue outlet. In the case that the nitrogen oxide concentration of the first gas is not within the preset concentration interval, it indicates that the nitrogen oxide concentration of the flue gas is abnormal, i.e., the denitration treatment process is abnormal. In this case, the nitrogen oxide concentration of the first gas can be predicted according to the first concentration curve to obtain the predicted nitrogen oxide concentration of the first gas, and the relevant personnel can be informed to overhaul the denitration treatment device based on the predicted nitrogen oxide concentration.

[0050] It should be understood that the above-mentioned preset concentration interval is a nitrogen oxide concentration interval customized by the user.

[0051] It should be understood that the predicted nitrogen oxide concentration is used to represent the nitrogen oxide concentration of the first gas discharged at the flue outlet in the case that the denitration treatment process is not abnormal.

[0052] It should be understood that the first concentration curve is determined based on the nitrogen oxide sampling result of the first gas discharged at the flue outlet. For ease of understanding, please refer to Figure 3 , Figure 3 is a schematic diagram of the first concentration curve provided by the embodiment of the present application, wherein, Figure 3 the abscissa axis in is used to represent the sampling time, and the ordinate axis is used to represent the average value of the nitrogen oxide concentration.

[0053] Optionally, in the case that the nitrogen oxide concentration of the first gas is within the preset concentration interval, it indicates that the nitrogen oxide concentration of the flue gas is normal, i.e., the denitration treatment process is normal. In this case, the relevant personnel does not need to be informed to overhaul the denitration treatment device.

[0054] In the embodiment, in the case that the nitrogen oxide concentration of the first gas discharged at the flue outlet is not in the preset concentration range, that is, in the case that the denitration treatment process is abnormal, the predicted nitrogen oxide concentration of the first gas discharged at the flue outlet is determined based on the first concentration curve, and then the relevant personnel can be notified to overhaul the denitration treatment device according to the predicted nitrogen oxide concentration, so that the overhaul efficiency is improved.

[0055] Optionally, before the nitrogen oxide concentration of the first gas discharged at the flue outlet is obtained, the method further comprises:

[0056] sampling the first gas discharged at the flue outlet in N same preset time periods to obtain the nitrogen oxide concentrations of the first gas in the N same preset time periods;

[0057] generating N second concentration curves based on the nitrogen oxide concentrations of the first gas in the N same preset time periods; the second concentration curves are used to represent the mapping relationship between the sampling time and the nitrogen oxide concentration;

[0058] generating a first concentration curve according to the average value of the nitrogen oxide concentration corresponding to each sampling time in the N second concentration curves; the first concentration curve is used to represent the mapping relationship between the sampling time and the average value of the nitrogen oxide concentration.

[0059] As described above, the nitrogen oxide detector arranged at the flue outlet is used to sample the first gas discharged at the flue outlet to obtain the nitrogen oxide concentration of the first gas.

[0060] In the embodiment, the nitrogen oxide concentration of the first gas can be obtained by the nitrogen oxide detector in N same preset time periods, and then N second concentration curves can be generated. It should be noted that one second concentration curve is determined based on the nitrogen oxide concentration detected by the nitrogen oxide detector in one preset time period.

[0061] Specifically, the abscissa axis in Figure 4 is used to represent the sampling time, and the ordinate axis is used to represent the nitrogen oxide concentration. Figure 4 From Figure 4 , it can be seen that the second concentration curve is used to represent the mapping relationship between the sampling time and the nitrogen oxide concentration.

[0062] Further, the first concentration curve can be generated according to the N second concentration curves. As described above, the first concentration curve is used to represent the mapping relationship between the sampling time and the average value of the nitrogen oxide concentration. Specifically, the first concentration curve can be generated by the following formula:

[0063]

[0064] Among them, C ave C represents the average concentration of nitrogen oxides characterized by the first concentration curve. i This represents the nitrogen oxide concentration characterized by the second concentration curve.

[0065] The following details how to predict the nitrogen oxide concentration of the first gas based on the first concentration curve, thus obtaining the predicted nitrogen oxide concentration of the first gas:

[0066] Optionally, determining the predicted nitrogen oxide concentration of the first gas discharged at the flue outlet based on the first concentration curve includes:

[0067] The sampling time of the first gas discharged from the flue outlet is obtained;

[0068] The average nitrogen oxide concentration in the first concentration curve corresponding to the sampling time is determined as the predicted nitrogen oxide concentration of the first gas discharged at the flue outlet.

[0069] In this embodiment, the sampling time of the first gas discharged at the flue outlet can be determined by a nitrogen oxide concentration detector installed at the flue outlet. In other words, the sampling time of the nitrogen oxide concentration detector is determined as the sampling time of the first gas.

[0070] As mentioned above, the horizontal axis of the first concentration curve is used to characterize the sampling time, and the vertical axis is used to characterize the average concentration of nitrogen oxides. That is, the first concentration curve can reflect the mapping relationship between the sampling time and the average concentration of nitrogen oxides.

[0071] In this embodiment, after obtaining the sampling time of the first gas, the average nitrogen oxide concentration corresponding to the sampling time in the first concentration curve is determined as the predicted nitrogen oxide concentration of the first gas discharged at the flue outlet.

[0072] For a better understanding of the overall technical solution of the above embodiments, please refer to [link / reference]. Figure 5 ,like Figure 5 As shown, a second concentration curve is generated based on the nitrogen oxide concentration collected by the nitrogen oxide concentration detector; a first concentration curve is generated based on N second concentration curves; if the nitrogen oxide concentration of the first gas discharged at the flue outlet is not within the preset concentration range, the predicted nitrogen oxide concentration of the first gas discharged at the flue outlet is determined based on the first concentration curve, and relevant personnel are notified to carry out maintenance.

[0073] This application also provides a device for preventing flue blockage; see [link to relevant documentation]. Figure 6 , Figure 6 This is one of the structural schematic diagrams of the anti-smoke duct blockage device provided in the embodiments of this application, such as... Figure 6As shown, the flue blockage prevention device 200 comprises a sensor 201, a flow rate detector, a processor and a blower, the sensor 201 comprising a soot detector 2011;

[0074] The soot detector 2011 is configured to obtain the soot concentration of the first gas discharged at the flue outlet.

[0075] The flow rate detector is configured to obtain the gas flow rate of the first gas discharged at the flue outlet.

[0076] The processor is configured to determine a target time length based on the soot concentration and the gas flow rate.

[0077] The blower is configured to send the second gas into the flue from the flue outlet every interval of the target time length.

[0078] The gas flow direction of the second gas is opposite to that of the first gas.

[0079] In an optional embodiment, the flue blockage prevention device 200 can be arranged at each flue outlet. Figure 7 In the structure shown, the number of flue blockage prevention devices 200 is six.

[0080] In an optional embodiment, the above-mentioned flue blockage prevention device can also be a nitrogen oxide concentration sampling device. In this embodiment, the flue blockage prevention device is arranged at different positions of the flue to collect nitrogen oxide gas and measure the nitrogen oxide gas concentration.

[0081] Optionally, the processor is specifically configured to:

[0082] input the soot concentration and the gas flow rate into a preset target model to obtain the target time length.

[0083] The target model is a trained machine learning model, and the training set of the machine learning model comprises soot concentration training data, gas flow rate training data and time length data.

[0084] Optionally, the sensor 201 further comprises a nitrogen oxide concentration detector 2012, which is configured to obtain the nitrogen oxide concentration of the first gas discharged at the flue outlet.

[0085] The processor is further configured to, in the case that the nitrogen oxide concentration of the first gas discharged at the flue outlet is not in a preset concentration interval, determine the predicted nitrogen oxide concentration of the first gas discharged at the flue outlet according to a first concentration curve, the first concentration curve being determined based on the nitrogen oxide sampling result of the first gas discharged at the flue outlet.

[0086] Optionally, the nitrogen oxide concentration detector 2012 is further configured to sample the first gas discharged at the flue outlet in N same preset time periods to obtain nitrogen oxide concentrations of the first gas in the N same preset time periods.

[0087] The processor is further configured to generate N second concentration curves based on the nitrogen oxide concentrations of the first gas in the N same preset time periods, wherein the second concentration curves are used to represent a mapping relationship between sampling time and nitrogen oxide concentration.

[0088] The processor is further configured to generate a first concentration curve based on an average value of the nitrogen oxide concentration corresponding to each sampling time in the N second concentration curves, wherein the first concentration curve is used to represent a mapping relationship between sampling time and nitrogen oxide average value.

[0089] Optionally, the processor is further configured to obtain a sampling time of the first gas discharged at the flue outlet.

[0090] The processor is further configured to determine the predicted nitrogen oxide concentration of the first gas discharged at the flue outlet as the nitrogen oxide average value corresponding to the sampling time in the first concentration curve.

[0091] In the embodiment, the soot concentration and the gas flow rate of the first gas discharged at the flue outlet are obtained, the target time length is determined based on the soot concentration and the gas flow rate, and then the second gas is sent into the flue from the flue outlet every target time length to blow off the soot attached to the flue, so as to prevent the flue from being blocked. In addition, by blowing off the soot attached to the flue, the error of the nitrogen oxide concentration detected by the nitrogen oxide detector is avoided.

[0092] Optionally, the soot detector 2011 and the nitrogen oxide detector 2012 are arranged at the first end of the inductor 201, and the distance between the soot detector 2011 and the flue outlet is greater than the distance between the nitrogen oxide detector 2012 and the flue outlet, wherein the first end is the end of the inductor 201 close to the flue outlet.

[0093] Please refer to Figure 6 In the embodiment, the nitrogen oxide detector 2012 is arranged to face away from the flue gas introduction direction, so as to prevent the soot in the flue gas from affecting the detection result of the nitrogen oxide detector 2012.

[0094] Optionally, the inductor 201 is arranged to have an angle greater than 45 degrees and less than 180 degrees between the extension direction of the second end and the gas flow direction of the second gas, wherein the second end is the end of the inductor 201 away from the flue outlet.

[0095] In the embodiment, the inductor 201 is arranged to form an angle with the flow direction of the second gas, so that the second gas is more smoothly sent into the flue to blow off the dust attached to the flue.

[0096] Figure 8 A hardware structure diagram of an electronic device for implementing various embodiments of the present application is shown in FIG. 3. Figure 8 The electronic device 300 includes a processor 301, a memory 302, and a computer program stored in the memory 302 and executable on the processor 301. When the processor 301 executes the computer program, the following steps are implemented:

[0097] Obtain the dust concentration and the gas flow rate of the first gas discharged at the flue outlet;

[0098] Determine a target time length based on the dust concentration and the gas flow rate;

[0099] Send the second gas into the flue from the flue outlet every interval of the target time length.

[0100] Further, when the processor 301 executes the computer program, the following steps are implemented:

[0101] Input the dust concentration and the gas flow rate into a preset target model to obtain the target time length.

[0102] Further, when the processor 301 executes the computer program, the following steps are implemented:

[0103] Obtain the nitrogen oxide concentration of the first gas discharged at the flue outlet;

[0104] In the case that the nitrogen oxide concentration of the first gas discharged at the flue outlet is not in a preset concentration interval, determine the predicted nitrogen oxide concentration of the first gas discharged at the flue outlet according to a first concentration curve.

[0105] Further, when the processor 301 executes the computer program, the following steps are implemented:

[0106] Sample the first gas discharged at the flue outlet in N same preset time periods to obtain the nitrogen oxide concentration of the first gas in the N same preset time periods;

[0107] Generate N second concentration curves based on the nitrogen oxide concentration of the first gas in the N same preset time periods;

[0108] Generate a first concentration curve according to the average value of the nitrogen oxide concentration corresponding to each sampling time in the N second concentration curves.

[0109] Further, the computer program is also implemented to realize the following steps when executed by the processor 301:

[0110] acquiring a sampling time of the first gas discharged at the flue outlet;

[0111] determining the average value of the nitrogen oxide concentration corresponding to the sampling time in the first concentration curve as the predicted nitrogen oxide concentration of the first gas discharged at the flue outlet.

[0112] The electronic device 300 can realize Figure 1 the processes of the flue blockage prevention method in the method embodiment, and achieve the same technical effects. To avoid repetition, details are not described here.

[0113] The present application embodiment also provides a computer readable storage medium, and the computer readable storage medium stores a computer program. The computer program is executed by a processor to realize the processes of the above flue blockage prevention method embodiments, and can achieve the same technical effects. To avoid repetition, details are not described here. The computer readable storage medium includes a read-only memory (ROM), a random access memory (RAM), a magnetic disk, an optical disk, and the like.

[0114] It should be noted that in this paper, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "includes a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0115] From the above description of the embodiments, those skilled in the art can clearly understand that the above embodiment method can be realized by software and necessary general hardware platform, of course, it can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes a plurality of instructions for making a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) execute the methods described in various embodiments of the present application.

[0116] Any technical features in the above embodiments can be combined, and for the sake of brevity, not all possible combinations are described above, however, any combination of the technical features is deemed to be within the scope of the present disclosure.

[0117] The embodiments of the present application are described above with reference to the drawings, but the present application is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative, rather than restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope of protection of the claims.

Claims

1. A method of preventing flue plugging, characterized by, The method comprises: acquiring the flue dust concentration and the gas flow rate of the first gas discharged at the flue outlet; determining a target time length based on the flue dust concentration and the gas flow rate; sending the second gas from the flue outlet to the flue at intervals of the target time length; wherein the gas flow direction of the second gas is opposite to that of the first gas; The method further comprises: acquiring the nitrogen oxide concentration of the first gas discharged at the flue outlet; in the case that the nitrogen oxide concentration of the first gas discharged at the flue outlet is not within a preset concentration interval, determining the predicted nitrogen oxide concentration of the first gas discharged at the flue outlet according to a first concentration curve; the first concentration curve is determined based on the nitrogen oxide sampling results of the first gas discharged at the flue outlet; the predicted nitrogen oxide concentration is used to represent the nitrogen oxide concentration of the first gas discharged at the flue outlet in the case that there is no abnormality in the denitration treatment process; the first concentration curve is used to represent the mapping relationship between the sampling time and the average nitrogen oxide concentration; wherein the determination of the predicted nitrogen oxide concentration of the first gas discharged at the flue outlet according to the first concentration curve comprises: acquiring the sampling time of the first gas discharged at the flue outlet; determining the average nitrogen oxide concentration corresponding to the sampling time in the first concentration curve as the predicted nitrogen oxide concentration of the first gas discharged at the flue outlet; the determination of the target time length based on the flue dust concentration and the gas flow rate comprises: inputting the flue dust concentration and the gas flow rate into a preset target model to obtain the target time length; wherein the target model is a trained machine learning model, and the training set of the machine learning model comprises flue dust concentration training data, gas flow rate training data and time length data.

2. The method of claim 1, wherein, Before acquiring the nitrogen oxide concentration of the first gas discharged at the flue outlet, the method further comprises: sampling the first gas discharged at the flue outlet in N same preset time periods to obtain the nitrogen oxide concentration of the first gas in the N same preset time periods; generating N second concentration curves based on the nitrogen oxide concentration of the first gas in the N same preset time periods; the second concentration curve is used to represent the mapping relationship between the sampling time and the nitrogen oxide concentration; generating the first concentration curve according to the average nitrogen oxide concentration corresponding to each sampling time in the N second concentration curves.

3. A flue gas passage clogging preventing device characterized by comprising: The device comprises an inductor, a flow rate detector, a processor and a blower, and the inductor comprises a flue dust detector; the flue dust detector is used to acquire the flue dust concentration of the first gas discharged at the flue outlet; the flow rate detector is used to acquire the gas flow rate of the first gas discharged at the flue outlet; the processor is used to determine a target time length based on the flue dust concentration and the gas flow rate; the blower is used to send the second gas from the flue outlet to the flue at intervals of the target time length; wherein the gas flow direction of the second gas is opposite to that of the first gas; The inductor further comprises a nitrogen oxide concentration detector configured to obtain a nitrogen oxide concentration of the first gas discharged at the flue outlet; The processor is further configured to, in a case where the nitrogen oxide concentration of the first gas discharged at the flue outlet is not within the preset concentration range, determine a predicted nitrogen oxide concentration of the first gas discharged at the flue outlet according to a first concentration curve, the first concentration curve being determined based on the nitrogen oxide sampling result of the first gas discharged at the flue outlet, the predicted nitrogen oxide concentration being used to represent the nitrogen oxide concentration of the first gas discharged at the flue outlet in a case where the denitration process is normal, and the first concentration curve being used to represent a mapping relationship between a sampling time and a nitrogen oxide concentration average value. The processor is further configured to, in a case where the nitrogen oxide concentration of the first gas discharged at the flue outlet is not within the preset concentration range, determine a predicted nitrogen oxide concentration of the first gas discharged at the flue outlet according to a first concentration curve, the first concentration curve being determined based on the nitrogen oxide sampling result of the first gas discharged at the flue outlet, the predicted nitrogen oxide concentration being used to represent the nitrogen oxide concentration of the first gas discharged at the flue outlet in a case where the denitration process is normal, and the first concentration curve being used to represent a mapping relationship between a sampling time and a nitrogen oxide concentration average value. The processor is further configured to, in a case where the nitrogen oxide concentration of the first gas discharged at the flue outlet is not within the preset concentration range, determine a predicted nitrogen oxide concentration of the first gas discharged at the flue outlet according to a first concentration curve, the first concentration curve being determined based on the nitrogen oxide sampling result of the first gas discharged at the flue outlet, the predicted nitrogen oxide concentration being used to represent the nitrogen oxide concentration of the first gas discharged at the flue outlet in a case where the denitration process is normal, and the first concentration curve being used to represent a mapping relationship between a sampling time and a nitrogen oxide concentration average value. The processor is further configured to: input the soot concentration and the gas flow rate into a preset target model to obtain a target time length, wherein the target model is a trained machine learning model, and a training set of the machine learning model comprises soot concentration training data, gas flow rate training data, and time length data. The nitrogen oxide concentration detector is further configured to sample the first gas discharged at the flue outlet in N same preset time periods to obtain nitrogen oxide concentrations of the first gas in the N same preset time periods. The processor is further configured to generate N second concentration curves based on the nitrogen oxide concentrations of the first gas in the N same preset time periods, and the second concentration curves are used to represent mapping relationships between sampling times and nitrogen oxide concentrations.

4. The apparatus of claim 3, wherein, The first concentration curve is generated according to average values of the nitrogen oxide concentrations corresponding to each sampling time in the N second concentration curves. The soot detector and the nitrogen oxide concentration detector are arranged at a first end of the inductor, and a distance between the soot detector and the flue outlet is greater than a distance between the nitrogen oxide concentration detector and the flue outlet, and the first end is an end of the inductor close to the flue outlet. An included angle between an extension direction of a second end of the inductor and a gas flow direction of the second gas is greater than 45 degrees and less than 180 degrees, and the second end is an end of the inductor away from the flue outlet.

5. The apparatus of claim 3, wherein, The computer program is stored in the memory and executable on the processor, and when executed by the processor, the computer program implements the steps of the flue blockage prevention method according to any one of claims 1 to 2.

6. The apparatus of claim 5, wherein, The computer program is stored in the memory and executable on the processor, and when executed by the processor, the computer program implements the steps of the flue blockage prevention method according to any one of claims 1 to 2.

7. An electronic device, comprising: ​ 8. A computer-readable storage medium, characterized in that, ​

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