Method and device for detecting dioxin in waste incineration flue gas dust collection bag

Abstract

The invention relates to the technical field of chemical analysis, and particularly discloses a method and a device for detecting dioxin in a waste incineration flue gas dust collection bag, the method comprises the steps of gas inlet flue gas detection, gas outlet flue gas detection and flue gas emission control, the gas inlet detection judges whether flue gas exceeds the standard or not through a first detection device, and the gas outlet detection judges whether the flue gas exceeds the standard or not through a second detection device; adjusting the smoke generation process according to the information, and evaluating the information transmission stability at the same time; the air outlet detection is started after the air inlet detection result is uploaded, the second detection device waits for preset time and then detects, and if the detection result exceeds the standard, the use state of the cloth bag is fed back; in addition, the method further comprises the step of controlling flue gas emission according to the dioxin content difference value between the air inlet and the air outlet of the cloth bag, such as adjusting the air speed, the method not only detects the dioxin content of the flue gas, but also effectively controls the dioxin emission through a feedback adjusting mechanism, and compared with a traditional scheme only based on temperature control, the method is more comprehensive and effective.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical analysis, and specifically to a method and device for detecting dioxins in a dust removal cloth bag of waste incineration flue gas. Background Technique

[0002] Dioxin is an odorless and toxic fat-soluble substance with strong toxicity, which usually exists in small particles in the atmosphere, soil and water. It mainly comes from the by-products of solid waste incineration, other combustion or heat treatment processes, and the production process of chlorine-containing chemical products. Dioxin has significant hazards to human health and the ecological environment and can affect the nervous system and endocrine system. Therefore, it is crucial to strictly control its emissions.

[0003] For example, the invention patent with the publication number CN105865855B relates to the technology of detecting organic pollutants and aims to provide a flue gas sampling and purification system for on-line detection of dioxins. The system includes a sampling device for collecting flue gas samples. The sampling device is sequentially connected to a condensation and water removal component, a regulating valve, a flow meter and a sampling pump through a heat tracing pipeline. The discharge port of the sampling pump communicates with the atmosphere; the heat tracing pipeline is connected to a temperature control device to achieve temperature control.

[0004] For example, the invention patent with the publication number CN117969748B relates to the field of flue gas emission detection, specifically to a waste incinerator flue gas emission detection system based on multi-point linkage feedback, including a unit for monitoring flue gas and a data feedback and review unit for comprehensively analyzing the environment and waste gas; by counting the soot particles at the discharge port, the detection of flue gas emissions is realized to avoid excessive emissions. At the same time, the air quality information at the location of the waste incinerator is detected, and the filtration of environmental gas quality information is realized according to the types of air pollutants detected. According to the comparison between the content of air pollutants in the environmental gas and the content of flue gas discharged from the waste incinerator, and the comparison and verification between the air quality information and the flue gas emission amount, the accuracy of the flue gas emission detection data at the discharge port is ensured.

[0005] Combined with the above technical solutions, it is found that the existing technical solutions for dioxin flue gas emissions are only based on temperature control during the operation of purifying flue gas, and their dimension is relatively single. Moreover, only flue gas detection is carried out without specific adjustment measures, resulting in the problem of excessive dioxin flue gas emissions during the process of controlling dioxin flue gas emissions. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the present invention provides a method and device for detecting dioxins in a dust removal cloth bag of waste incineration flue gas, which can effectively solve the problems involved in the above background technique.

[0007] To achieve the above object, the present invention is realized by the following technical solutions: In the first aspect of the present invention, a method for detecting dioxins in a dust removal cloth bag of waste incineration flue gas is provided, including: inlet flue gas detection: using a first dioxin content detection device to detect the dioxin content of the inlet flue gas of the dust removal cloth bag, determining whether the inlet flue gas of the dust removal cloth bag exceeds the standard, and then the first dioxin content detection device uploads the determination result of the inlet flue gas to the flue gas emission control platform; outlet flue gas detection: using a second dioxin content detection device to detect the dioxin content of the outlet flue gas of the dust removal cloth bag, determining whether the outlet flue gas of the dust removal cloth bag exceeds the standard, and then the second dioxin content detection device uploads the determination result of the outlet flue gas to the flue gas emission control platform; flue gas emission control: the flue gas emission control platform determines the usage status of the dust removal cloth bag according to the determination result of the inlet flue gas and the determination result of the outlet flue gas, and finally completes the flue gas emission control.

[0008] As a further method, the process of determining whether the inlet flue gas of the dust removal cloth bag exceeds the standard is as follows: based on the first dioxin content detection device to detect the dioxin content of the inlet flue gas of the dust removal cloth bag, obtaining the dioxin content of the inlet flue gas of the dust removal cloth bag, and comparing it with the defined dioxin emission content. If the dioxin content of the inlet flue gas of the dust removal cloth bag is greater than or equal to the defined dioxin emission content, then the inlet flue gas of the dust removal cloth bag exceeds the standard, and the generation process of the flue gas is feedback adjusted. If the dioxin content of the inlet flue gas of the dust removal cloth bag is less than the defined dioxin emission content, then the inlet flue gas of the dust removal cloth bag does not exceed the standard. At the same time, the stability of the information transmission between the first dioxin content detection device and the flue gas emission control platform is determined. Then, the first dioxin content detection device uploads the determination result of the inlet flue gas and the dioxin content of the inlet flue gas of the dust removal cloth bag to the flue gas emission control platform; the determination result of the inlet flue gas is specifically that the inlet flue gas of the dust removal cloth bag does not exceed the standard.

[0009] As a further method, to determine whether the flue gas at the outlet of the flue gas dust removal bag exceeds the standard, the specific determination process is as follows: Use the second dioxin content detection device to detect the dioxin content of the flue gas at the outlet of the flue gas dust removal bag. Specifically, when the flue gas emission control platform receives the determination result of the flue gas at the inlet of the first dioxin content detection device, it simultaneously sends a waiting detection instruction to the second dioxin content detection device. After waiting for a preset time, the second dioxin content detection device automatically detects the dioxin content of the flue gas at the outlet of the flue gas dust removal bag to obtain the dioxin content of the flue gas at the outlet of the flue gas dust removal bag. Compare the dioxin content of the flue gas at the outlet of the flue gas dust removal bag with the permitted dioxin emission content. If the dioxin content of the flue gas at the outlet of the flue gas dust removal bag is greater than or equal to the permitted dioxin emission content, then the flue gas at the outlet of the flue gas dust removal bag exceeds the standard, and accordingly, the usage status of the flue gas dust removal bag is feedback. If the dioxin content of the flue gas at the outlet of the flue gas dust removal bag is less than the permitted dioxin emission content, then the flue gas at the outlet of the flue gas dust removal bag does not exceed the standard. Accordingly, the second dioxin content detection device uploads the determination result of the outlet flue gas and the dioxin content of the flue gas at the outlet of the flue gas dust removal bag to the flue gas emission control platform; the specific determination result of the outlet flue gas is that the flue gas at the outlet of the flue gas dust removal bag does not exceed the standard.

[0010] As a further method, to determine the usage status of the flue gas dust removal bag, the specific determination process is as follows: The flue gas emission control platform performs a difference process on the dioxin content of the flue gas at the inlet of the flue gas dust removal bag and the dioxin content of the flue gas at the outlet of the flue gas dust removal bag to obtain the dioxin content difference of the flue gas dust removal bag, and verifies it with each predefined dioxin content difference interval to determine the specific interval to which the dioxin content difference of the flue gas dust removal bag belongs, so as to control the flue gas emission.

[0011] The second aspect of the present invention provides a device for a dioxin detection method in a waste incineration flue gas dust removal bag, which is characterized in that it includes: a first dioxin content detection device, a second dioxin content detection device, a flue gas emission control platform, a flue gas cooling device, and a photographing device; the first dioxin content detection device and the second dioxin content detection device are both used to detect the dioxin content in the flue gas in real time; the flue gas cooling device is used to quickly cool the high-temperature flue gas to curb the secondary synthesis of dioxin; the photographing device is used to photograph the state of the flue gas dust removal bag during use in real time; the flue gas emission control platform is used to perform real-time control on the first dioxin content detection device, the second dioxin content detection device, the flue gas cooling device, and the photographing device.

[0012] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0013] (1) The present invention provides a method and device for detecting dioxins in the dust removal cloth bags of waste incineration flue gas. The inlet detection uses the first detection device to determine whether the flue gas exceeds the standard, and accordingly adjusts the flue gas generation process. At the same time, the information transmission stability is evaluated. If the dioxin content in the inlet flue gas exceeds the standard, the temperature of the combustion furnace is adjusted; the outlet detection is started after the inlet detection result is uploaded. The second detection device waits for a preset time and then detects. If it exceeds the standard, the usage status of the cloth bag is fed back; in addition, the method also includes controlling the flue gas emission according to the difference in dioxin content between the inlet and outlet of the cloth bag, such as adjusting the wind speed, etc. This method not only detects the dioxin content in the flue gas, but also effectively controls the dioxin emission through a feedback adjustment mechanism, which is more comprehensive and effective than the traditional temperature-only control scheme.

[0014] (2) By collecting data such as the transmission delay duration, bandwidth utilization rate, connection interruption times, and electromagnetic interference intensity values between the collection device and the platform, the present invention can quantify the stability performance of information transmission, ensuring that the determination result of the inlet flue gas can be uploaded to the flue gas emission control platform in a timely and accurate manner. This helps the platform to start the outlet detection in a timely manner after receiving the inlet detection result, thus ensuring that the same mass of flue gas is detected at the inlet and outlet, improving the timeliness and accuracy of the detection, and providing a reliable basis for subsequent flue gas emission control.

[0015] (3) By detecting the usage data of the flue gas dust removal cloth bag to determine the usage status of the dust removal cloth bag, such as pore changes and damage degree, it is convenient for the operation and maintenance personnel to maintain or replace the flue gas dust removal cloth bag in a timely manner, ensuring that the cloth bag is always in the best working state, thus effectively avoiding the decrease in purification efficiency caused by aging, wear or blockage of the cloth bag, ensuring the normal use of the flue gas dust removal cloth bag, preventing flue gas leakage or emission exceeding the standard problems caused by cloth bag failures, and improving the overall operation efficiency of flue gas emission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation to the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the following drawings.

[0017] Figure 1 It is a schematic flow chart of the method steps of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Referring to Figure 1 As shown, a method for detecting dioxins in a dust removal cloth bag for waste incineration flue gas according to the first aspect of the present invention includes: detecting the flue gas at the inlet: using a first dioxin content detection device to detect the dioxin content of the flue gas at the inlet of the dust removal cloth bag, determining whether the flue gas at the inlet of the dust removal cloth bag exceeds the standard, and then the first dioxin content detection device uploads the determination result of the flue gas at the inlet to the flue gas emission control platform.

[0020] It should be explained that the first dioxin content detection device and the second dioxin content detection device involved in the embodiments of the present invention are specifically professional devices in the prior art for accurately measuring the dioxin content in flue gas. The detection device may include, but is not limited to, a sampling gun for collecting flue gas samples. The sampling gun is sequentially connected to a filter, a condensation and water removal component, a regulating valve, a flow meter, and a sampling pump through a heat tracing pipeline. The discharge port of the sampling pump communicates with the outside air. A tee is provided on the heat tracing pipeline between the filter and the condensation and water removal component, and one interface of the tee is connected to a preconcentrator through a heat tracing pipeline. The condensation and water removal component is composed of a condensation pipe and multiple dryers connected in series, and the heat tracing pipeline and the filter with heating function are both temperature-controlled by independent temperature controllers. The sampling gun includes a sampling gas inlet, a sampling gas outlet, a backflush gas inlet, a primary filter, and a temperature-controlled heating component. The temperature-controlled heating component is connected to an independent temperature controller; the primary filter is a ceramic filter element, and the particle size of the particles that can be filtered is below 1.0 μm.

[0021] The above-mentioned flue gas emission control platform is the core control center of the waste incineration flue gas treatment system, mainly used for summarizing and analyzing the data of the first dioxin content detection device and the second detection device, determining the use status of the dust removal cloth bag and regulating related equipment, so as to achieve precise management of waste incineration flue gas emissions and ensure compliance with dioxin emissions. In actual application scenarios, DCS (Distributed Control System) can be used as a reference for constructing or understanding the flue gas emission control platform.

[0022] Among them, DCS (Distributed Control System) is widely used in the industrial production field. In scenarios such as thermal power generation and chemical production, the DCS system can centrally monitor and decentralizedly control a large number of on-site devices. It collects various production data, such as temperature, pressure, and flow rate, through sensors and transmits them to the central control station. Operators can grasp the production process status in real time at the central control station and can also remotely adjust equipment parameters according to the actual situation. In the waste incineration treatment of the embodiments of the present invention, the flue gas emission control platform can draw on the architecture mode of the DCS system to centrally manage devices such as dioxin detection devices, combustion furnaces, flue gas cooling devices, and wind speed sensors.

[0023] Specifically, the determination of whether the flue gas at the inlet of the flue gas dust removal bag exceeds the standard is as follows:

[0024] Based on the dioxin content first detection device, the dioxin content of the flue gas at the inlet of the flue gas dust removal bag is detected to obtain the dioxin content of the flue gas at the inlet of the flue gas dust removal bag. Then, it is compared with the predefined dioxin emission limit content in the flue gas emission control library. If the dioxin content of the flue gas at the inlet of the flue gas dust removal bag is greater than or equal to the dioxin emission limit content, it means that the flue gas at the inlet of the flue gas dust removal bag exceeds the standard, and feedback adjustment is made to the flue gas generation process. If the dioxin content of the flue gas at the inlet of the flue gas dust removal bag is less than the dioxin emission limit content, it means that the flue gas at the inlet of the flue gas dust removal bag does not exceed the standard. At the same time, the stability of the information transmission between the dioxin content first detection device and the flue gas emission control platform is determined. Subsequently, the dioxin content first detection device uploads the determination result of the inlet flue gas to the flue gas emission control platform.

[0025] The determination result of the inlet flue gas is specifically the fact that the flue gas at the inlet of the flue gas dust removal bag does not exceed the standard and the dioxin content of the flue gas at the inlet of the flue gas dust removal bag.

[0026] Furthermore, the feedback adjustment to the flue gas generation process is as follows:

[0027] The difference between the dioxin content of the flue gas at the inlet of the flue gas dust removal bag and the dioxin emission limit content is processed to obtain the dioxin content deviation value of the flue gas at the inlet of the flue gas dust removal bag. Then, it is matched with the corresponding combustion furnace temperature floating value in each dioxin content deviation value interval predefined in the flue gas emission control library. The specific matching process is as follows: Extract the mapping set between the dioxin content deviation value and the combustion furnace temperature floating value of the flue gas at the inlet of the flue gas dust removal bag from the flue gas emission control library. First, determine the specific interval of the dioxin content deviation value of the flue gas at the inlet of the flue gas dust removal bag, and finally obtain the corresponding combustion furnace temperature floating value of this interval. According to the combustion furnace temperature floating value, obtain the combustion furnace temperature permission interval, where the combustion furnace temperature permission interval is specifically the interval temperature that can float up and down relative to the combustion furnace reference temperature.

[0028] Obtain the actual temperature of the combustion furnace, which can be detected by a temperature sensor. The flue gas emission control platform compares the actual temperature of the combustion furnace with the combustion furnace temperature permission interval. If the actual temperature of the combustion furnace does not belong to the combustion furnace temperature permission interval, the flue gas emission control platform adjusts the actual temperature of the combustion furnace until the actual temperature of the combustion furnace belongs to the combustion furnace temperature permission interval. If the actual temperature of the combustion furnace belongs to the combustion furnace temperature permission interval, the flue gas cooling device is adjusted.

[0029] In a specific embodiment, if the combustion furnace reference temperature is set to 850 degrees Celsius, where the combustion furnace reference temperature can be obtained by averaging the combustion furnace historical temperature data, the dioxin content deviation value of the flue gas at the air inlet of the flue gas dust removal bag is 50 nanograms per cubic meter, and the matched combustion furnace temperature floating value is 6, then the combustion furnace temperature allowable range is [844, 856] degrees Celsius. If the actual temperature of the combustion furnace is 848 degrees Celsius at this time, the actual temperature of the combustion furnace belongs to the combustion furnace temperature allowable range. If the actual temperature of the combustion furnace is 859 degrees Celsius at this time, the actual temperature of the combustion furnace does not belong to the combustion furnace temperature allowable range.

[0030] It needs to be explained that when the incineration temperature is not high enough during the garbage incineration process, the garbage cannot be fully burned and dioxins are easily produced. By matching the dioxin content deviation value of the flue gas at the air inlet with the predefined interval to obtain the combustion furnace temperature floating value, and then determining the combustion furnace temperature allowable range, the combustion furnace temperature can be accurately controlled. At the same time, too high an incineration temperature will lead to secondary synthesis of dioxins. In this process, if the actual temperature of the combustion furnace exceeds the temperature allowable range, the system will adjust it in time. If the actual temperature is 859 and is higher than the allowable range [844, 856], the actual temperature of the combustion furnace will be adjusted downward to avoid secondary synthesis of dioxins caused by excessive temperature, and effectively control the overall production of dioxins. Similarly, if the actual temperature is 840 and is lower than the allowable range [844, 856], the actual temperature of the combustion furnace will be adjusted upward to reduce the increase in dioxin content caused by the incineration temperature.

[0031] After the garbage is incinerated at high temperature in the incinerator, flue gas containing dioxins is produced. At this time, the flue gas is at a high temperature of 850 degrees Celsius. In order to curb the secondary synthesis of dioxins, a flue gas cooling device is set before entering the air inlet of the flue gas dust removal bag, such as a flue gas quenching tower. Under the action of the flue gas quenching tower, the high-temperature flue gas of 850 degrees Celsius is reduced to 180 degrees Celsius within 2 seconds, effectively avoiding the secondary synthesis conditions of dioxins, among which dioxins are difficult to synthesize at temperatures below 180 degrees Celsius.

[0032] Adjust the flue gas cooling device. Specifically, when the cooling effect is not good and the high-temperature flue gas is not effectively cooled within the specified time, increase the water spraying mass per unit time of the water spraying device belonging to the flue gas cooling device to enhance the cooling effect on the high-temperature flue gas; reduce the operating power of the cyclone dust collector in the flue gas cooling device, reduce the flow rate of the flue gas in the flue gas cooling device, so that the flue gas has more sufficient time to exchange heat with the cooling medium, thereby achieving more sufficient cooling; regularly calibrate the temperature monitoring equipment to ensure that its measurement data is accurate and reliable.

[0033] Specifically, the stability performance of the information transmission between the first dioxin content detection device and the flue gas emission control platform is specifically recorded as the transmission stability index of the device-platform for the information transmission between the first dioxin content detection device and the flue gas emission control platform, and the specific determination process is as follows:

[0034] Collect the information transmission correlation data of the device-platform, specifically including the transmission delay duration of the device-platform within the information transmission cycle, the bandwidth utilization rate of the device-platform within the information transmission cycle, the real-time transmission rate of the device-platform within the information transmission cycle, the number of connection interruptions of the device-platform within the information transmission cycle, and the maximum electromagnetic interference intensity value of the device-platform within the information transmission cycle.

[0035] The above-mentioned information transmission correlation data of the device-platform can be specifically extracted from the operation report of the first dioxin content detection device. The above-mentioned information transmission cycle specifically refers to a period of time when the first dioxin content detection device transmits detection information to the flue gas emission control platform.

[0036] Perform a ratio process on the number of connection interruptions of the device-platform within the information transmission cycle and the corresponding duration of the information transmission cycle to obtain the connection interruption frequency of the device-platform within the information transmission cycle.

[0037] Perform normalized data processing on the bandwidth utilization rate of the device-platform within the information transmission cycle and the real-time transmission rate of the device-platform within the information transmission cycle, so that the transmission efficiency index of the device-platform obtained after the normalized data processing represents a value that quantifies the transmission efficiency of the device-platform within the information transmission cycle by the bandwidth utilization rate and the real-time transmission rate together. The specific data processing process is as follows:

[0038]

[0039] In the formula, B is the transmission efficiency index of the device-platform within the information transmission cycle, V(t) is the real-time transmission rate of the device-platform at time t, t is the time variable, t ∈ [t0, t1], t0 is the start time point of the information transmission cycle, t1 is the end time point of the information transmission cycle, V 0 is the real-time transmission definition rate, DK is the bandwidth utilization rate of the device-platform within the information transmission cycle, DK 0 is the bandwidth adaptation utilization rate, d1 is the weight factor corresponding to the predefined real-time transmission rate in the flue gas emission control library, and d2 is the weight factor corresponding to the predefined bandwidth utilization rate in the flue gas emission control library.

[0040] It should be noted that the above real-time transmission rate refers to the amount of data actually and successfully transmitted by the dioxin content first detection device to the flue gas emission control platform within the information transmission cycle, which reflects the true speed of data transmission from the device to the platform; the real-time transmission definition rate refers to the minimum value permitted by the preset real-time transmission rate; the bandwidth utilization rate refers to the proportion of the actual network bandwidth used between the dioxin content first detection device and the flue gas emission control platform within the information transmission cycle to the total available bandwidth, which reflects the utilization efficiency of network resources; the bandwidth adaptation utilization rate refers to the reference value corresponding to the preset bandwidth utilization rate.

[0041] Among them, the weight factors corresponding to the real-time transmission rate and the weight factors corresponding to the bandwidth utilization rate are both extracted from the flue gas emission control library, and the mapping relationship therein can be a one-to-one or one-to-many relationship. For example, the real-time transmission rate and the bandwidth utilization rate respectively form a mapping set with the weight factors corresponding to the preset real-time transmission rate and the weight factors corresponding to the bandwidth utilization rate in the flue gas emission control library. Substituting the real-time real-time transmission rate and the bandwidth utilization rate into the mapping set, the weight factors corresponding to the real-time transmission rate and the weight factors corresponding to the bandwidth utilization rate are obtained. In this embodiment, the value ranges of the weight factors corresponding to the real-time transmission rate and the weight factors corresponding to the bandwidth utilization rate are both (0, 1).

[0042] In this embodiment, through the multivariate analysis of the real-time transmission rate and the bandwidth utilization rate, the correlation between these variables is considered. The real-time transmission rate directly determines the amount of data passing through the network per unit time, thereby affecting the bandwidth utilization rate. When the real-time transmission rate is relatively high, it means that the data traffic in the network is large, and the bandwidth utilization rate will naturally increase accordingly. However, when the real-time transmission rate is too high, it may lead to network congestion. At this time, the bandwidth utilization rate may deviate from the bandwidth adaptation utilization rate, which may further lead to problems such as an increase in data transmission delay and an increase in data loss rate, affecting the overall network transmission performance; on the contrary, if the bandwidth utilization rate is too small, that is, the network resources are not fully utilized, this is also not the optimal state, which means that although there is sufficient bandwidth available, the data transmission volume corresponding to the real-time transmission rate is not enough to fill these bandwidths, resulting in waste of resources and also reducing the data transmission performance between the device and the platform.

[0043] The transmission delay definition duration, the bandwidth adaptation utilization rate, the real-time transmission definition rate, and the electromagnetic interference intensity definition value are extracted from the flue gas emission control library.

[0044] Perform a comprehensive analysis of normalizing the transmission delay duration of the device-platform within the information transmission cycle, the transmission efficiency index of the device-platform within the information transmission cycle, the connection interruption frequency of the device-platform within the information transmission cycle, and the maximum electromagnetic interference intensity value of the device-platform within the information transmission cycle, so that the transmission stability index of the device-platform obtained after normalizing the data is expressed as data that quantifies the transmission stability of the device-platform by the transmission delay duration, transmission efficiency index, connection interruption frequency, and maximum electromagnetic interference intensity value. The specific analysis process is as follows:

[0045]

[0046] In the formula, TSI is the transmission stability index of the device-platform, T is the transmission delay duration of the device-platform within the information transmission cycle, T 0 is the defined duration of the transmission delay, B is the transmission efficiency index of the device-platform within the information transmission cycle, E is the maximum electromagnetic interference intensity value of the device-platform within the information transmission cycle, E 0 is the defined value of the electromagnetic interference intensity, F is the connection interruption frequency of the device-platform within the information transmission cycle, α is the weight factor corresponding to the predefined transmission delay duration in the flue gas emission control library, β is the weight factor corresponding to the predefined transmission efficiency index in the flue gas emission control library, γ is the weight factor corresponding to the predefined maximum electromagnetic interference intensity value in the flue gas emission control library, and δ is the weight factor corresponding to the predefined connection interruption frequency in the flue gas emission control library.

[0047] The above-mentioned transmission efficiency index of the device-platform within the information transmission cycle is obtained by processing data through the bandwidth utilization rate of the device-platform within the information transmission cycle and the real-time transmission rate of the device-platform within the information transmission cycle, resulting in the transmission efficiency index of the device-platform within the information transmission cycle.

[0048] It should be explained that the above-mentioned transmission delay duration refers to the time difference from the start of data transmission to the completion of platform reception during the process of the dioxin content first detection device transmitting detection data to the flue gas emission control platform. This index reflects the timeliness of data transmission; the defined duration of the transmission delay is the maximum value permitted by the predefined transmission delay duration; the maximum electromagnetic interference intensity value refers to the maximum intensity value of the electromagnetic interference suffered by the information transmission between the dioxin content first detection device and the flue gas emission control platform within the information transmission cycle; the defined value of the electromagnetic interference intensity is the maximum value permitted by the predefined electromagnetic interference intensity; the connection interruption frequency refers to the frequency of network connection interruption between the dioxin content first detection device and the flue gas emission control platform within the information transmission cycle, which is calculated by the ratio of the number of connection interruptions to the corresponding duration of the information transmission cycle.

[0049] The weight factors corresponding to the transmission delay duration, the weight factors corresponding to the transmission efficiency index, the weight factors corresponding to the maximum electromagnetic interference intensity value, and the weight factors corresponding to the connection interruption frequency are all obtained by extracting from the flue gas emission control library. The mapping relationship therein can be one-to-one or many-to-one. For example, the transmission delay duration, the transmission efficiency index, the maximum electromagnetic interference intensity value, and the connection interruption frequency respectively form a mapping set with the weight factors corresponding to the preset transmission delay duration, the weight factors corresponding to the transmission efficiency index, the weight factors corresponding to the maximum electromagnetic interference intensity value, and the weight factors corresponding to the connection interruption frequency in the flue gas emission control library. Substituting the real-time transmission delay duration, transmission efficiency index, maximum electromagnetic interference intensity value, and connection interruption frequency into the mapping set, the weight factors corresponding to the transmission delay duration, the weight factors corresponding to the transmission efficiency index, the weight factors corresponding to the maximum electromagnetic interference intensity value, and the weight factors corresponding to the connection interruption frequency are obtained. In this embodiment, the value ranges of the weight factors corresponding to the transmission delay duration, the weight factors corresponding to the transmission efficiency index, the weight factors corresponding to the maximum electromagnetic interference intensity value, and the weight factors corresponding to the connection interruption frequency are all (0, 1).

[0050] In this embodiment, when the electromagnetic interference generated by electrical equipment at the waste incineration site is strong and the maximum electromagnetic interference intensity value increases, it will interfere with the data transmission signal. After the signal is interfered, the error correction and retransmission mechanisms in the data transmission process will be activated, which will undoubtedly increase the data transmission time, resulting in a longer transmission delay duration and greatly reducing the transmission stability of the device-platform. Moreover, high-intensity electromagnetic interference may directly damage the data transmission link, causing the connection to be interrupted. The more frequent and intense the electromagnetic interference is, the higher the possibility of connection interruption, thus leading to an increase in the connection interruption frequency, which also has a negative impact on the transmission stability performance of the device-platform. In addition, the larger the transmission efficiency index of the device-platform within the information transmission cycle, the faster the data transmission speed. In the same information transmission cycle, more data can be transmitted, thereby reducing the negative impact of the transmission delay duration on the transmission stability index. Similarly, a high transmission efficiency index indicates that the data transmission is efficient and orderly, which can reduce the occurrence of connection interruption and lower the connection interruption frequency, bringing a positive effect to the transmission stability performance of the device-platform.

[0051] Outlet flue gas detection: Use the second dioxin content detection device to detect the dioxin content of the outlet flue gas of the flue gas dust removal bag, determine whether there is an over-standard situation in the outlet flue gas of the flue gas dust removal bag, and then the second dioxin content detection device uploads the determination result of the outlet flue gas to the flue gas emission control platform.

[0052] Further, the process of determining whether there is an over-standard situation in the outlet flue gas of the flue gas dust removal bag is specifically as follows:

[0053] The dioxin content in the flue gas at the outlet of the flue gas dust removal bag is detected by the second dioxin content detection device. Specifically, when the flue gas emission control platform receives the determination result of the flue gas at the inlet of the first dioxin content detection device, a waiting detection instruction is simultaneously sent to the second dioxin content detection device. After waiting for a preset duration, the second dioxin content detection device automatically detects the dioxin content in the flue gas at the outlet of the flue gas dust removal bag to obtain the dioxin content in the flue gas at the outlet of the flue gas dust removal bag.

[0054] The above waiting detection instruction is specifically to control the second dioxin content detection device to start detection after a duration dynamically calculated by the flue gas emission control platform. The dynamically calculated duration is obtained by introducing a timestamp synchronization mechanism. The consistency of the detection object is verified by matching the timestamps of the inlet and outlet. Specifically, the flue gas timestamp is marked during the inlet detection and synchronized to the outlet detection device through a stable transmission channel to ensure that the detection is based on the same time reference, thereby guaranteeing the emission control effect of the flue gas dust removal bag.

[0055] The dioxin content in the flue gas at the outlet of the flue gas dust removal bag is compared with the predefined dioxin emission permit content in the flue gas emission control library. If the dioxin content in the flue gas at the outlet of the flue gas dust removal bag is greater than or equal to the dioxin emission permit content, there is an over-standard situation in the flue gas at the outlet of the flue gas dust removal bag. Based on this, the usage status of the flue gas dust removal bag is fed back. If the dioxin content in the flue gas at the outlet of the flue gas dust removal bag is less than the dioxin emission permit content, there is no over-standard situation in the flue gas at the outlet of the flue gas dust removal bag. Based on this, the second dioxin content detection device uploads the determination result of the flue gas at the outlet to the flue gas emission control platform.

[0056] It should be noted that the above dioxin emission permit content is not the same as the dioxin emission definition content, and the specific value of the dioxin emission permit content is less than the specific value of the dioxin emission definition content.

[0057] The determination result of the flue gas at the outlet is specifically that there is no over-standard situation in the flue gas at the outlet of the flue gas dust removal bag and the dioxin content in the flue gas at the outlet of the flue gas dust removal bag.

[0058] Specifically, the process of feeding back the usage status of the flue gas dust removal bag is as follows:

[0059] The flue gas emission control platform activates a photographing device (such as a 3D laser scanner or a multi-view high-definition camera) to perform three-dimensional imaging on the flue gas dust removal cloth bag. The pore connection area is identified through an image processing algorithm, which can be a watershed algorithm, a morphological closing operation, etc. Indexes such as the equivalent circle diameter, area ratio, and distribution density are calculated. The equivalent circle diameter refers to the diameter of a circle with the same area as this area. The area ratio refers to the ratio of the connected area to the overall area of the flue gas dust removal cloth bag. The distribution density refers to the number of connected areas per unit area. If any of the following conditions is met: (1) The single-hole diameter is greater than 120% of the initial value, and the number is greater than the defined number of abnormal pores; (2) The equivalent circle diameter of the connected area is greater than 150% of the initial maximum single-hole diameter. For example, after 3 independent pores with a diameter of 5 mm are connected, the equivalent circle diameter can reach 8.6 mm; (3) The comprehensive damage index (a * number of single-hole anomalies + b * area ratio of the connected area + c * distribution density) is greater than 0.6, then it is determined that the flue gas dust removal cloth bag is in a non-usable state, where a, b, and c are the weight factors corresponding to the number of single-hole anomalies, the area ratio of the connected area, and the distribution density respectively, and can be obtained from the flue gas emission control library in this embodiment.

[0060] Flue gas emission control: The flue gas emission control platform determines the usage status of the flue gas dust removal cloth bag based on the determination results of the inlet flue gas and the outlet flue gas, and finally completes the flue gas emission control.

[0061] Furthermore, the determination of the usage status of the flue gas dust removal cloth bag is specifically as follows:

[0062] The flue gas emission control platform performs a difference process on the dioxin content of the inlet flue gas of the flue gas dust removal cloth bag and the dioxin content of the outlet flue gas of the flue gas dust removal cloth bag to obtain the dioxin content difference of the flue gas dust removal cloth bag, and verifies it with each dioxin content difference interval predefined in the flue gas emission control to determine the specific interval to which the dioxin content difference of the flue gas dust removal cloth bag belongs, so as to achieve the control of flue gas emission.

[0063] Specifically, the control of flue gas emission is specifically as follows:

[0064] If the dioxin content difference of the flue gas dust removal cloth bag belongs to the first dioxin content difference interval, the wind speed sensor belonging to the flue gas dust removal cloth bag is activated to detect the air flow rate of the flue gas passing through the flue gas dust removal cloth bag. According to the detection status of the air flow rate, the flue gas emission is controlled. Specifically, the actually detected air flow rate is compared with the air adaptation flow rate predefined in the flue gas emission control library. If the actually detected air flow rate is greater than or equal to the air adaptation flow rate, the detection status of the air flow rate is a qualified status. If the actually detected air flow rate is less than the air adaptation flow rate, the detection status of the air flow rate is an unqualified status.

[0065] When the detection status of the air velocity is qualified, the air velocity adjustment value at the inlet of the flue gas dust removal cloth bag is obtained by matching the dioxin content difference of the flue gas dust removal cloth bag. The specific matching process is as follows: Extract the mapping set between the dioxin content difference and the air velocity adjustment value from the flue gas emission control library, input the dioxin content difference, and obtain the corresponding air velocity adjustment value at the inlet of the flue gas dust removal cloth bag, which is used to adjust the air velocity of the flue gas entering the flue gas dust removal cloth bag to accelerate the air velocity of the flue gas entering the flue gas dust removal cloth bag.

[0066] If the dioxin content difference of the flue gas dust removal cloth bag belongs to the second interval of the dioxin content difference, the air velocity adjustment value at the inlet of the flue gas dust removal cloth bag is obtained by matching the dioxin content difference of the flue gas dust removal cloth bag. The specific matching process is as follows: Extract the mapping set between the dioxin content difference and the air velocity adjustment value from the flue gas emission control library, input the dioxin content difference, and obtain the corresponding air velocity adjustment value at the inlet of the flue gas dust removal cloth bag. Input the air velocity adjustment value using the inlet control valve, and the inlet control valve automatically reduces the air velocity of the flue gas entering the flue gas dust removal cloth bag to (the air velocity at the inlet - the air velocity adjustment value), thereby reducing the air velocity at the inlet and weakening the air velocity of the flue gas entering the flue gas dust removal cloth bag.

[0067] If the dioxin content difference of the flue gas dust removal cloth bag belongs to the third interval of the dioxin content difference, the damage degree of the flue gas dust removal cloth bag is determined, the available state of the flue gas dust removal cloth bag is fed back, and finally the flue gas emission is controlled.

[0068] Further, the process of specifically feeding back the available state of the flue gas dust removal cloth bag is as follows:

[0069] The flue gas dust removal cloth bag is divided into sub-regions of each flue gas dust removal cloth bag according to equal regions, the state data of each sub-region of the flue gas dust removal cloth bag is collected, and the damage degree value of each sub-region of the flue gas dust removal cloth bag is determined.

[0070] The damage degree values of each sub-region of the flue gas dust removal cloth bag are verified with the predefined damage degree definition value in the flue gas emission control library. If the damage degree value of a certain sub-region of the flue gas dust removal cloth bag is greater than the damage degree definition value, the sub-region of the flue gas dust removal cloth bag is recorded as a damaged sub-region, the number of damaged sub-regions in the flue gas dust removal cloth bag is counted, and then compared with the predefined number of damaged sub-region definitions in the flue gas emission control library. If the number of damaged sub-regions in the flue gas dust removal cloth bag is greater than or equal to the number of damaged sub-region definitions, the flue gas dust removal cloth bag is fed back as an unavailable state. If the number of damaged sub-regions in the flue gas dust removal cloth bag is less than the number of damaged sub-region definitions, the flue gas dust removal cloth bag is fed back as an available state.

[0071] The status data of each of the above-mentioned flue gas dust removal bag areas specifically includes the grayscale values of the images of each flue gas dust removal bag area at the detection end time point, the pore diameters of each flue gas dust removal bag area at the detection end time point, the average air velocity of each flue gas dust removal bag area during the detection period, and the interval duration since the flue gas dust removal bag was put into use.

[0072] The above-mentioned grayscale values and each pore diameter can be specifically obtained from the acquisition report of the photographing device, the air velocity can be obtained from the detection report of the wind speed sensor, and the interval duration since the flue gas dust removal bag was put into use can be obtained from the usage report of the flue gas dust removal bag.

[0073] The process of specifically obtaining the grayscale values of the images of each of the above-mentioned flue gas dust removal bag areas at the detection end time point is as follows:

[0074] At the detection end time point, use a high-resolution photographing device to photograph the flue gas dust removal bag. Open the collected image through image analysis software. The software will decompose the image into individual pixel points. Each pixel point contains information on the three color channels of red (R), green (G), and blue (B). Through the pixel reading function of the software, the corresponding R, G, and B values of each pixel point can be obtained. These values are represented in digital form, usually in the range of 0 - 255. The larger the value, the higher the brightness of the color channel. Finally, the (R, G, B) values of each pixel point of the images of each flue gas dust removal bag area at the detection end time point are obtained.

[0075] According to the pre-divided areas of each flue gas dust removal bag, determine the boundary range of each sub-area in the image analysis software. For each sub-area, use the average value method to calculate its RGB value. Assume that there are n pixel points in a certain sub-area, and the RGB value of the i-th pixel point is (R i , G i , B i ). Then the R value of this sub-area is the average value of the R values of all pixel points in the sub-area, that is The G value is The B value is In this way, the RGB values representing the overall color characteristics of each sub-area can be obtained, that is, the (R, G, B) values of the images of each flue gas dust removal bag area at the detection end time point.

[0076] After obtaining the (R, G, B) values of each flue gas dust removal bag area at the detection end time point, a common color space conversion formula can be selected to convert the (R, G, B) values into grayscale values. For example, use the grayscale value = (R + G + B) / 3. This simple averaging method averages the three components to obtain a grayscale value representing the color depth, that is, the grayscale values of the images of each flue gas dust removal bag area at the detection end time point.

[0077] The initial image grayscale value, initial pore diameter, reference average air velocity, and defined service interval duration are extracted from the flue gas emission control database.

[0078] Perform a normalized comprehensive analysis on the grayscale values of the images of each flue gas dust removal bag area at the detection end time point, the pore diameters of each flue gas dust removal bag area at the detection end time point, the average air velocity of each flue gas dust removal bag area during the detection period, the transmission stability index of the device - platform, the transmission efficiency index of the device - platform during the information transmission period, and the service interval duration of the flue gas dust removal bag, so that the damage degree values of each flue gas dust removal bag area obtained after normalized data processing are expressed as numerical values that quantify the damage degree of the flue gas dust removal bag area jointly by the grayscale value, each pore diameter, average air velocity, transmission stability index, transmission efficiency index, and service interval duration. The specific analysis method is as follows:

[0079]

[0080] In the formula, PS y is the damage degree value of the y - th flue gas dust removal bag area, y is the number of each flue gas dust removal bag area, y = 1, 2, 3,..., Y, Y is the total number of flue gas dust removal bag areas, HD y is the grayscale value of the image of the y - th flue gas dust removal bag area at the detection end time point, HD 0 is the initial grayscale value, KX yj is the j - th pore diameter of the y - th flue gas dust removal bag area at the detection end time point, j is the number of each pore, j = 1, 2, 3,..., M, M is the total number of pores, KX 0 is the initial pore diameter, LS y is the average air velocity of the y - th flue gas dust removal bag area during the detection period, LS 0 is the reference average air velocity, SY is the service interval duration of the flue gas dust removal bag, SY 0 is the defined service interval duration, TSI is the transmission stability index of the device - platform, B is the transmission efficiency index of the device - platform during the information transmission period, p1 is the weight factor corresponding to the grayscale value predefined in the flue gas emission control database, p2 is the weight factor corresponding to the pore diameter predefined in the flue gas emission control database, p3 is the weight factor corresponding to the average air velocity predefined in the flue gas emission control database, p4 is the weight factor corresponding to the service interval duration predefined in the flue gas emission control database, is the influence factor corresponding to the transmission stability index predefined in the flue gas emission control database, ω is the influence factor corresponding to the transmission efficiency index predefined in the flue gas emission control database.

[0081] The transmission efficiency index of the above-mentioned device-platform within the information transmission cycle is obtained by comprehensively analyzing the bandwidth utilization rate of the device-platform within the information transmission cycle and the real-time transmission rate of the device-platform within the information transmission cycle.

[0082] The transmission stability index of the above-mentioned device-platform is obtained by comprehensively analyzing the transmission delay duration of the device-platform within the information transmission cycle, the transmission efficiency index of the device-platform within the information transmission cycle, the connection interruption frequency of the device-platform within the information transmission cycle, and the maximum electromagnetic interference intensity value of the device-platform within the information transmission cycle.

[0083] It should be explained that the above-mentioned gray value refers to the value representing the color depth obtained by converting the red (R), green (G), and blue (B) color information of the pixel points in the image through a specific method at the detection termination time point of each flue gas dust removal bag area image; the pore diameter refers to the size of the pores on the flue gas dust removal bag, specifically the diameter value of each pore in each flue gas dust removal bag area at the detection termination time point; the average air velocity refers to the average value of the air velocity of the flue gas passing through this area within the detection cycle of each flue gas dust removal bag area; the reference average air velocity refers to the adapted value corresponding to the preset average air velocity; the service interval duration refers to the time interval from the last use to the current detection moment of the flue gas dust removal bag at the detection termination time point; the defined service interval duration refers to the maximum value permitted for the preset service interval duration.

[0084] Among them, the weight factors corresponding to the gray value, the weight factors corresponding to the pore diameter, the weight factors corresponding to the average air velocity, the weight factors corresponding to the usage interval duration, the influence factors corresponding to the transmission efficiency index, and the influence factors corresponding to the transmission stability index are all extracted from the flue gas emission control library. The mapping relationship therein can be a one-to-one or one-to-many relationship. For example, the gray value, the pore diameter, the average air velocity, the usage interval duration, the transmission efficiency index, and the transmission stability index form mapping sets with the weight factors corresponding to the preset gray value, the weight factors corresponding to the pore diameter, the weight factors corresponding to the average air velocity, the weight factors corresponding to the usage interval duration, the influence factors corresponding to the transmission efficiency index, and the influence factors corresponding to the transmission stability index in the flue gas emission control library respectively. Substituting the real-time gray value, pore diameter, average air velocity, usage interval duration, transmission efficiency index, and transmission stability index into the mapping sets, the weight factors corresponding to the gray value, the weight factors corresponding to the pore diameter, the weight factors corresponding to the average air velocity, the weight factors corresponding to the usage interval duration, the influence factors corresponding to the transmission efficiency index, and the influence factors corresponding to the transmission stability index are obtained. In this embodiment, the value ranges of the weight factors corresponding to the gray value, the weight factors corresponding to the pore diameter, the weight factors corresponding to the average air velocity, the weight factors corresponding to the usage interval duration, the influence factors corresponding to the transmission efficiency index, and the influence factors corresponding to the transmission stability index are all (0, 1).

[0085] In this embodiment, the usage interval duration reflects the frequency of use and the cumulative usage time of the fabric filter. As the usage interval duration increases, the aging of the fabric filter intensifies, which will increase the pore diameter. Because long-term flue gas scouring and physical friction will cause damage to the fiber structure of the fabric filter and pore expansion, aging will also change the surface characteristics of the fabric filter and cause changes in the gray value. For example, the color becomes darker and the gray value changes accordingly. Moreover, the increase in the pore diameter may change the flow path of the flue gas in the fabric filter and affect the average air velocity, usually making the flow velocity distribution more uneven and intensifying the damage degree of the flue gas dust removal fabric filter area; when the pore diameter increases, more impurities and high-temperature flue gas will enter the interior of the fabric filter and deposit, changing the optical characteristics of the fabric filter surface and resulting in changes in the gray value. From the perspective of the average air velocity, the change in the pore diameter directly affects the resistance of the flue gas flow. When the pore diameter increases, the local resistance decreases, the air velocity may increase, and the overall average air velocity will also change accordingly, which also has a negative impact on the damage degree of the flue gas dust removal fabric filter area, greatly reducing the control effect of the flue gas dust removal fabric filter on the flue gas.

[0086] In this embodiment, if the transmission efficiency index of the device-platform during the information transmission cycle and the transmission stability index of the device-platform are small, it means that the transmission stability index between the device and the platform is not good, such as long transmission delay, frequent connection interruption, and low real-time transmission rate, which will cause the flue gas emission control platform to be unable to obtain accurate regional status data of each flue gas dust removal bag in time, which makes it difficult for the platform to accurately calculate the degree of damage value, thereby affecting the judgment of the bag damage condition, which may delay the maintenance or replacement of the damaged bag, further aggravate the bag damage, and increase the degree of damage value. When the degree of damage value of the bag increases, it means that the performance of the bag is reduced, which may affect the flue gas purification effect and cause abnormal dioxin emissions. This will prompt the detection device to detect and upload data more frequently, increase the data transmission volume, and bring pressure to the data transmission of the device-platform, thereby affecting the transmission stability index.

[0087] The second aspect of the present invention provides a device for detecting dioxins in dust removal bags of waste incineration flue gas, characterized in that it includes: a first dioxin content detection device, a second dioxin content detection device, a flue gas emission control platform, a flue gas cooling device and a shooting device.

[0088] The first dioxin content detection device and the second dioxin content detection device are both used to perform real-time detection of the dioxin content in the flue gas.

[0089] The flue gas cooling device is used to quickly cool the flue gas at a high temperature to curb the secondary synthesis of dioxins.

[0090] The photographing device is used for photographing the status of the flue gas dust removal bag during use in real time.

[0091] The flue gas emission control platform is used to perform real-time control on the first dioxin content detection device, the second dioxin content detection device, the flue gas cooling device and the shooting device.

[0092] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A method for detecting dioxins in a dust removal cloth bag for waste incineration flue gas, characterized in that, Including: Inlet gas detection: Use the first dioxin content detection device to detect the dioxin content of the inlet gas of the flue gas dust removal bag, determine whether the inlet gas of the flue gas dust removal bag exceeds the standard, and then the first dioxin content detection device uploads the determination result of the inlet gas to the flue gas emission control platform; Outlet gas detection: Use the second dioxin content detection device to detect the dioxin content of the outlet gas of the flue gas dust removal bag, determine whether the outlet gas of the flue gas dust removal bag exceeds the standard, and then the second dioxin content detection device uploads the determination result of the outlet gas to the flue gas emission control platform; Flue gas emission control: The flue gas emission control platform determines the usage status of the flue gas dust removal bag based on the determination results of the inlet gas and the outlet gas, and finally completes the flue gas emission control.

2. The method for detecting dioxin in the dust removal cloth bag of waste incineration flue gas according to claim 1, wherein: The specific determination process for determining whether the inlet gas of the flue gas dust removal bag exceeds the standard is as follows: Based on the first dioxin content detection device, detect the dioxin content of the inlet gas of the flue gas dust removal bag to obtain the dioxin content of the inlet gas of the flue gas dust removal bag, and compare it with the defined dioxin emission content. If the dioxin content of the inlet gas of the flue gas dust removal bag is greater than or equal to the defined dioxin emission content, then the inlet gas of the flue gas dust removal bag exceeds the standard, and feedback adjustment is performed on the gas generation process. If the dioxin content of the inlet gas of the flue gas dust removal bag is less than the defined dioxin emission content, then the inlet gas of the flue gas dust removal bag does not exceed the standard, and at the same time, the stability of the information transmission between the first dioxin content detection device and the flue gas emission control platform is determined. Subsequently, the first dioxin content detection device uploads the determination result of the inlet gas and the dioxin content of the inlet gas of the flue gas dust removal bag to the flue gas emission control platform; The specific determination result of the inlet gas is that the inlet gas of the flue gas dust removal bag does not exceed the standard.

3. The dioxin detection method in the dust removal cloth bag for waste incineration flue gas according to claim 2, characterized in that: The specific adjustment process for the feedback adjustment of the gas generation process is as follows: Perform a difference process on the dioxin content of the inlet gas of the flue gas dust removal bag and the defined dioxin emission content to obtain the dioxin content deviation value of the inlet gas of the flue gas dust removal bag, match it with the corresponding combustion furnace temperature floating value for each defined dioxin content deviation value interval, finally obtain the combustion furnace temperature floating value, and obtain the combustion furnace temperature permission interval based on the combustion furnace temperature floating value; Obtain the actual temperature of the combustion furnace. The flue gas emission control platform compares the actual temperature of the combustion furnace with the combustion furnace temperature permission interval. If the actual temperature of the combustion furnace does not belong to the combustion furnace temperature permission interval, then the flue gas emission control platform adjusts the actual temperature of the combustion furnace until the actual temperature of the combustion furnace belongs to the combustion furnace temperature permission interval. If the actual temperature of the combustion furnace belongs to the combustion furnace temperature permission interval, then the flue gas cooling device is adjusted.

4. The method for detecting dioxins in the dust removal cloth bag of waste incineration flue gas according to claim 2, wherein: The stability performance of the information transmission between the first dioxin content detection device and the flue gas emission control platform is specifically as follows: Denote the stability performance of the information transmission between the first dioxin content detection device and the flue gas emission control platform as the transmission stability index of the device-platform. The specific determination process is as follows: Collect the information transmission correlation data of the device-platform, specifically including the transmission delay duration of the device-platform within the information transmission cycle, the bandwidth utilization rate of the device-platform within the information transmission cycle, the real-time transmission rate of the device-platform within the information transmission cycle, the number of connection interruptions of the device-platform within the information transmission cycle, and the maximum electromagnetic interference intensity value of the device-platform within the information transmission cycle; Perform a ratio process on the number of connection interruptions of the device-platform within the information transmission cycle and the corresponding duration of the information transmission cycle to obtain the connection interruption frequency of the device-platform within the information transmission cycle; Integrate the deviation degree between the bandwidth utilization rate of the device-platform within the information transmission cycle and the corresponding bandwidth adaptation utilization rate and the ratio of the real-time transmission rate of the device-platform within the information transmission cycle to the corresponding real-time transmission definition rate for weighted aggregation processing to obtain the transmission efficiency index of the device-platform within the information transmission cycle. The transmission efficiency index of the device-platform within the information transmission cycle represents the data that quantifies the transmission efficiency of the device-platform within the information transmission cycle by the bandwidth utilization rate and the real-time transmission rate together; Extract the transmission delay definition duration, bandwidth adaptation utilization rate, real-time transmission definition rate, and electromagnetic interference intensity definition value from the flue gas emission control library; Perform weighted aggregation processing on the deviation degree between the transmission delay duration of the device-platform within the information transmission cycle and the corresponding transmission delay definition duration, the transmission efficiency index of the device-platform within the information transmission cycle, the connection interruption frequency of the device-platform within the information transmission cycle, and the deviation degree between the maximum electromagnetic interference intensity value of the device-platform within the information transmission cycle and the corresponding electromagnetic interference intensity definition value in sequence to obtain the transmission stability index of the device-platform. The transmission stability index of the device-platform represents the data that quantifies the transmission stability performance of the device-platform by the transmission delay duration, transmission efficiency index, connection interruption frequency, and maximum electromagnetic interference intensity value together.

5. The method for detecting dioxin in a dust removal cloth bag for waste incineration flue gas according to claim 1, characterized in that: The specific determination process for determining whether the flue gas at the outlet of the flue gas dust removal bag exceeds the standard is as follows: Use the second dioxin content detection device to detect the dioxin content of the flue gas at the outlet of the flue gas dust removal bag. Specifically, when the flue gas emission control platform receives the determination result of the inlet flue gas of the first dioxin content detection device, it simultaneously sends a waiting detection instruction to the second dioxin content detection device. After waiting for a preset duration, the second dioxin content detection device automatically detects the dioxin content of the flue gas at the outlet of the flue gas dust removal bag to obtain the dioxin content of the flue gas at the outlet of the flue gas dust removal bag; Compare the dioxin content in the flue gas at the outlet of the flue gas dust removal cloth bag with the permitted dioxin emission content. If the dioxin content in the flue gas at the outlet of the flue gas dust removal cloth bag is greater than or equal to the permitted dioxin emission content, there is an over-standard situation in the flue gas at the outlet of the flue gas dust removal cloth bag. Based on this, feedback the usage status of the flue gas dust removal cloth bag. If the dioxin content in the flue gas at the outlet of the flue gas dust removal cloth bag is less than the permitted dioxin emission content, there is no over-standard situation in the flue gas at the outlet of the flue gas dust removal cloth bag. Based on this, the second dioxin content detection device uploads the determination result of the outlet flue gas and the dioxin content in the flue gas at the outlet of the flue gas dust removal cloth bag to the flue gas emission control platform; The determination result of the outlet flue gas is specifically that there is no over-standard situation in the flue gas at the outlet of the flue gas dust removal cloth bag.

6. The method for detecting dioxins in the dust removal cloth bag of waste incineration flue gas according to claim 5, characterized in that: The specific feedback process of the feedback on the usage status of the flue gas dust removal cloth bag is as follows: The flue gas emission control platform starts the photographing device belonging to the flue gas dust removal cloth bag to photograph the pore image of the flue gas dust removal cloth bag. Based on this, collect the pore diameters of each flue gas dust removal cloth bag and compare them with the initial pore diameters of the flue gas dust removal cloth bags. If the pore diameter of a certain flue gas dust removal cloth bag is greater than the initial pore diameter of the flue gas dust removal cloth bag, record the pore of this flue gas dust removal cloth bag as an abnormal pore, count the number of abnormal pores of the flue gas dust removal cloth bag, and verify it with the predefined number of abnormal pore definitions. If the number of abnormal pores of the flue gas dust removal cloth bag is greater than the number of abnormal pore definitions, the flue gas emission control platform feedbacks that the usage status of the flue gas dust removal cloth bag is an unusable status.

7. The dioxin detection method in the dust removal cloth bag for waste incineration flue gas according to claim 1, characterized in that: The specific determination process for determining the usage status of the flue gas dust removal cloth bag is as follows: The flue gas emission control platform performs a difference process on the dioxin content in the flue gas at the inlet of the flue gas dust removal cloth bag and the dioxin content in the flue gas at the outlet of the flue gas dust removal cloth bag to obtain the dioxin content difference of the flue gas dust removal cloth bag, and verifies it with the predefined dioxin content difference intervals to determine the specific interval to which the dioxin content difference of the flue gas dust removal cloth bag belongs, so as to control the flue gas emission.

8. The method for detecting dioxin in the dust removal cloth bag of waste incineration flue gas according to claim 7, wherein: The specific control process for controlling the flue gas emission is as follows: If the dioxin content difference of the flue gas dust removal cloth bag belongs to the first dioxin content difference interval, start the wind speed sensor belonging to the flue gas dust removal cloth bag to detect the air flow rate of the flue gas passing through the flue gas dust removal cloth bag, and control the flue gas emission according to the detection status of the air flow rate; If the dioxin content difference of the flue gas dust removal cloth bag belongs to the second dioxin content difference interval, match the wind speed adjustment value at the inlet of the flue gas dust removal cloth bag according to the dioxin content difference of the flue gas dust removal cloth bag to adjust the wind speed of the flue gas entering the flue gas dust removal cloth bag; If the dioxin content difference of the flue gas dust removal cloth bag belongs to the third dioxin content difference interval, feedback the usable status of the flue gas dust removal cloth bag by determining the degree of damage of the flue gas dust removal cloth bag, and finally control the flue gas emission.

9. The method for detecting dioxin in a dust removal cloth bag for waste incineration flue gas according to claim 8, wherein: The specific feedback process of the feedback on the usable status of the flue gas dust removal cloth bag is as follows: Divide the flue gas dust removal cloth bag into sub-regions of each flue gas dust removal cloth bag, collect the status data of each sub-region of the flue gas dust removal cloth bag, and determine the degree of damage value of each sub-region of the flue gas dust removal cloth bag by integrating the transmission stability index of the device-platform; Verify the damage degree value of each flue gas dust removal cloth bag area against a predefined damage degree threshold value. If the damage degree value of a certain flue gas dust removal cloth bag area is greater than the damage degree threshold value, mark this flue gas dust removal cloth bag area as a damaged sub-area, count the number of damaged sub-areas in the flue gas dust removal cloth bag, and then compare it with the predefined defined number of damaged sub-areas. If the number of damaged sub-areas in the flue gas dust removal cloth bag is greater than or equal to the defined number of damaged sub-areas, feedback that the flue gas dust removal cloth bag is in a non-usable state. If the number of damaged sub-areas in the flue gas dust removal cloth bag is less than the defined number of damaged sub-areas, feedback that the flue gas dust removal cloth bag is in a usable state.

10. An apparatus for applying the dioxin detection method in a dust removal cloth bag for waste incineration flue gas according to any one of claims 1-9, characterized in that: Including: The first dioxin content detection device, the second dioxin content detection device, the flue gas emission control platform, the flue gas cooling device, and the photographing device; Both the first dioxin content detection device and the second dioxin content detection device are used to detect the dioxin content in the flue gas in real time; The flue gas cooling device is used to rapidly cool the high-temperature flue gas to curb the secondary synthesis of dioxin; The photographing device is used to photograph the state of the flue gas dust removal cloth bag during use in real time; The flue gas emission control platform is used to control the first dioxin content detection device, the second dioxin content detection device, the flue gas cooling device, and the photographing device in real time.

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