Sampling device and collecting method for dioxin in waste gas

Abstract

The invention relates to the technical field of gas sampling, and discloses a sampling device and a collecting method for dioxin in waste gas, and the sampling device comprises a sampling probe group which is used for obtaining a flue gas sample and environmental parameters of a flue gas emission pipeline; the data acquisition unit is connected with the sampling probe group, and the data acquisition unit is used for collecting information of environmental parameters and humidity H; the platform treatment box is connected with the sampling probe group, a smoke sample inlet is formed in the bottom of the platform treatment box, and an outlet is formed in the top of the platform treatment box; the humidity sensor is used for acquiring the humidity H of the smoke sample; the gas phase adsorber is used for preliminarily separating a gas phase and a liquid phase; the steam-water separator, the refrigerator, the molecular sieve filter pipe, the silica gel filter pipe, the filter, the volume flow meter, the mass flow meter, the oil pump and the exhaust port are sequentially connected. According to the device, dioxin can be separated and collected from flue gas, meanwhile, a flue gas sample is accurately controlled and treated according to collected environmental parameters, and the treated flue gas sample is discharged through the oil pump.

Description

Technical Field

[0001] The present invention relates to the technical field of gas sampling, and in particular to a sampling device and a collection method for dioxins in waste gas. Background Art

[0002] With the progress of industrialization and the improvement of environmental protection awareness, it is becoming increasingly important to monitor and control dioxin-like toxic and hazardous substances in industrial waste gas. Dioxins are a class of persistent and bioaccumulative organochlorine compounds that pose a serious threat to the environment and human health. Therefore, the development of effective sampling devices and methods for dioxins in waste gas is of great significance to environmental protection and public health.

[0003] Traditional exhaust gas sampling methods often have problems such as low sampling efficiency, complex operation, high equipment cost and difficulty in data analysis. In addition, since the concentration of dioxins is usually very low, highly precise control is required during the sampling process to ensure the accuracy and reliability of the data. Therefore, it is necessary to develop a new sampling device and method to improve sampling efficiency and data quality while reducing operational complexity and cost. Summary of the invention

[0004] In view of this, the present invention proposes a sampling device and a collection method for dioxins in waste gas, aiming to solve the problems of low sampling efficiency, complex operation, high equipment cost and difficulty in data analysis that often exist in current technologies.

[0005] On the one hand, the present invention provides a device for sampling dioxins in waste gas, comprising: A sampling probe group, one end of which is connected to the flue gas emission pipeline, and the sampling probe group is used to obtain the flue gas sample and environmental parameters of the flue gas emission pipeline, and the environmental parameters are temperature T, pressure P and flow F; a data acquisition unit, connected to the sampling probe group, and the data acquisition unit is used to collect information on environmental parameters and humidity H; a platform processing box, connected to the sampling probe group, and the bottom of the platform processing box is provided with an inlet for flue gas samples, and the top is provided with an outlet; a humidity sensor, connected to the platform processing box, and the humidity sensor is used to obtain the humidity H of the flue gas sample; a gas phase adsorber, connected to the platform processing box, and the gas phase adsorber is used to preliminarily separate the gas and liquid phases; and a gas-water separator, a refrigerator, a molecular sieve filter tube, a silica gel filter tube, a filter, a volume flow meter, a mass flow meter, an oil pump and an exhaust port connected in sequence; Wherein, the steam-water separator is connected with a liquid discharge port.

[0006] Optionally, the dioxin sampling device in the waste gas further includes: User end; A processing module, which is connected to the data acquisition unit, the volume flow meter, the mass flow meter and the oil pump respectively; the processing module automatically adjusts the flow pressure and humidity of the flue gas sample according to the preset flow, pressure and humidity; The cloud end is electrically connected to the processing module and the user end respectively.

[0007] Optionally, the platform processing box includes: an inlet and solid discharge door formed on the bottom side wall, and an outlet formed on the top side wall; A filtering mechanism is arranged inside the platform processing box.

[0008] Optionally, the filtering mechanism includes a filter element and an adsorption column, the filter element is divided into a first filter element and a second filter element, and the adsorption column is fixed above the second filter element, and the adsorption column is used to adsorb gas-phase impurities.

[0009] Optionally, the first filter element includes a first filter screen and a first rotating rod, one end of the first rotating rod is fixed to the inner wall of the platform processing box, the other end passes through the platform processing box and is arranged on the outer wall of the platform processing box, and the first rotating rod is arranged on the center line of the first filter screen; The second filter element includes a second filter screen and a second rotating rod, both of which are arranged on the upper part of the first filter screen. One end of the second rotating rod is fixed to the inner wall of the platform processing box, and the other end passes through the platform processing box and is arranged on the outer wall of the platform processing box. The second rotating rod is arranged on the center line of the second filter screen.

[0010] Optionally, the steam-water separator comprises: A front tube and a rear tube are fixed at both ends of the steam-water separator, with a gap between the front tube and the rear tube, an inclined net is arranged at one end of the front tube close to the rear tube, an acute angle is formed between the inclined net and the cross section of the front tube, a fan is arranged at one end of the rear tube, and a water leakage port is opened at the bottom of the steam-water separator.

[0011] Optionally, the sampling probe group includes: a sampling tube, a temperature sensing module, a pressure sensing module and a flow meter; the sampling tube is used to obtain flue gas samples, and the temperature sensing module, pressure sensing module and flow meter are respectively used to obtain information on temperature T, pressure P and flow F inside the flue gas exhaust pipe.

[0012] On the other hand, the present application also relates to a method for collecting dioxins in waste gas, which is collected using the device described in any one of claims 1 to 5, and the collection method is: S1: Connect the sampling probe group to the flue gas exhaust pipe, start the temperature sensing module, the pressure sensing module and the flow meter to obtain the information of the temperature T, the pressure P and the flow F inside the flue gas exhaust pipe; S2: Open the smoke sample inlet at the bottom of the platform processing box to allow the smoke sample to enter the platform processing box. In the platform processing box, the humidity H of the smoke sample is detected by a humidity sensor; S3: The flue gas sample undergoes preliminary gas-liquid phase separation through the gas phase adsorber. The separated flue gas sample continues to pass through the steam-water separator to separate the water from the gas and discharge it through the drain port.

[0013] S4: The flue gas sample passes through a refrigerator, a molecular sieve filter tube, a silica gel filter tube, a filter, a volume flow meter and a mass flow meter in sequence to measure the volume flow rate and mass flow rate of the gas, and the volume flow rate and the mass flow rate are sent to a processing module; S5: In the processing module, the flue gas samples are precisely controlled and processed according to the collected environmental parameters; the treated flue gas samples are discharged through the oil pump and released into the atmosphere through the exhaust port. At the same time, the user end and the cloud will receive and process the sampling data in real time to monitor and analyze the concentration and emission of dioxins in the exhaust gas.

[0014] Optionally, the environmental parameters in S5 include the temperature T, pressure P and flow F inside the smoke exhaust duct and the humidity H of the smoke sample.

[0015] Optionally, the precise control and processing of the smoke sample according to the collected environmental parameters in S5 specifically includes: By adjusting the mass flow meter or volume flow meter, ensure that the gas flow rate F remains constant during the sampling process; The flow rate of the flue gas sample is automatically adjusted according to the preset pressure value through the pressure sensor and the corresponding regulating valve; The flow rate of the flue gas sample is adjusted secondary through the humidity sensor and the corresponding dehumidification equipment.

[0016] Compared with the prior art, the beneficial effect of the present invention is that the present invention provides a sampling device and method for collecting dioxins in exhaust gas. The core components of the sampling device include a sampling probe group, a data acquisition unit, a platform processing box, a humidity sensor, a gas phase adsorber, and a series of gas processing and measurement equipment, such as a steam-water separator, a refrigerator, a molecular sieve filter tube, a silica gel filter tube, a filter, a volume flow meter, and a mass flow meter. These components work together to effectively separate and collect dioxins from flue gas, while ensuring that environmental parameters such as temperature, pressure, flow and humidity during the sampling process are accurately controlled. In addition, the sampling device can also include a user end and a cloud, which are interconnected with these parts through a processing module to achieve remote monitoring and processing of data. This design enables the sampling device to not only be operated on-site, but also to be remotely controlled and analyzed through the network, greatly improving the sampling efficiency and data processing capabilities. The sampling method is guided by a series of steps, including connecting the sampling probe group to the flue gas emission pipeline, starting the sensor module and the flow meter, opening the platform treatment box inlet, performing gas-liquid phase separation through the gas phase adsorber and the steam-water separator, purifying the flue gas sample through the refrigerator and the filter equipment, and measuring the gas flow through the volume flow meter and the mass flow meter. Finally, the flue gas sample is accurately controlled and processed in the processing module according to the collected environmental parameters, and the processed flue gas sample is discharged through the oil pump. In general, the present invention provides an efficient and reliable solution for environmental monitoring and industrial emission control through its carefully designed sampling device and method, which can accurately monitor and analyze the concentration and emission of dioxins in the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings: Figure 1 This is a schematic diagram of the overall plan view of a device for sampling dioxins in waste gas according to an embodiment of the present invention; Figure 2 A plan view of a sampling probe assembly according to an embodiment of the present invention; Figure 3 A three-dimensional perspective view of a platform processing box according to an embodiment of the present invention; Figure 4 It is a three-dimensional schematic diagram of a steam-water separator according to an embodiment of the present invention; Figure 5 It is a plan cross-sectional view of a steam-water separator according to an embodiment of the present invention.

[0018] Among them, 1. flue; 2. sampling probe group; 201. thermocouple temperature sensor; 202. micromanometer; 203. flow meter; 204. sampling tube; 3. platform processing box; 301. inlet; 302. solid discharge door; 303. first rotating rod; 304. first filter screen; 305. second rotating rod; 306. second filter screen; 307. adsorption column; 308. outlet; 4. gas phase adsorber; 5. number Data collection unit; 6. Humidity sensor; 7. Soda separator; 701. Front pipe; 702. Rear pipe; 703. Water leak; 704. Inclined net; 705. Fan; 8. Peristaltic pump; 9. Refrigerator; 10. Molecular sieve filter tube; 11. Silica gel filter tube; 12. Volume flow meter 13. Mass flow meter; 14. Oil pump; 15. Exhaust port; 16. Filter; 17. Processing module; 18. Cloud; 19. User end. DETAILED DESCRIPTION

[0019] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] With the continuous advancement of industrialization, waste gas emissions have become an important source of environmental pollution. Among them, dioxins, as a persistent organic pollutant, pose a serious threat to the environment and human health due to their carcinogenicity and toxicity. Therefore, accurate monitoring and control of dioxin concentrations in waste gas are of great significance for environmental protection and industrial pollution prevention and control. At present, the sampling and detection of dioxins in waste gas mainly rely on traditional sampling and analysis methods. These methods usually require manual operation and are limited by the performance of the sampling equipment and the technical level of the operator. In addition, when processing flue gas samples, traditional sampling methods often cannot effectively separate and purify impurities in flue gas, thus affecting the accuracy and reliability of the sampling results.

[0021] Therefore, the present invention proposes a sampling device for dioxins in waste gas, which aims to improve the automation and intelligence level of the sampling process to achieve accurate monitoring and control of dioxins in waste gas. The device can effectively obtain samples from the flue gas emission pipeline through the cooperation of a series of components, and preliminarily separate and purify the dioxins in the samples for subsequent detection and analysis. Specifically, the sampling device for dioxins in waste gas includes a sampling probe group, a data acquisition unit, a platform processing box, a humidity sensor, a gas phase adsorber, and a series of processing units, such as a steam-water separator, a refrigerator, a molecular sieve filter tube, a silica gel filter tube, a filter, a volume flow meter, a mass flow meter, an oil pump and an exhaust port. These components work together to achieve accurate sampling and detection of dioxins in waste gas. In addition, the sampling device for dioxins in waste gas also includes a user end and a cloud, which are interconnected with these parts through a processing module to achieve remote monitoring and processing of data. This design enables the sampling device to not only be operated on-site, but also to be remotely controlled and analyzed through the network, greatly improving the sampling efficiency and data processing capabilities.

[0022] In general, the present invention provides an efficient and reliable solution for environmental monitoring and industrial emission control through its carefully designed waste gas dioxin sampling device, which can accurately monitor and analyze the dioxin concentration and emission conditions in waste gas. The device of the present invention is described in detail below in conjunction with the accompanying drawings.

[0023] like Figure 1-5 As shown, it can be seen that the present invention provides a device for sampling dioxins in waste gas, comprising: A sampling probe group, one end of which is connected to the flue gas emission pipeline, and the sampling probe group is used to obtain the flue gas sample and environmental parameters of the flue gas emission pipeline, and the environmental parameters are temperature T, pressure P and flow F; a data acquisition unit 5, which is connected to the sampling probe group, and the data acquisition unit 5 is used to collect information on environmental parameters and humidity H; a platform processing box 3, which is connected to the sampling probe group, and the platform processing box 3 is provided with an inlet 301 for flue gas samples at the bottom and an outlet 308 at the top; a humidity sensor 6, which is connected to the platform processing box 3, and the humidity sensor 6 is used to obtain the humidity H of the flue gas sample; a gas phase adsorber 4, which is connected to the platform processing box 3, and the gas phase adsorber 4 is used to preliminarily separate the gas and liquid phases; and a gas-water separator 7, a refrigerator 9, a molecular sieve filter tube 10, a silica gel filter tube 11, a filter 16, a volume flow meter 12, a mass flow meter 13, an oil pump 14 and an exhaust port 15 which are connected in sequence; Wherein, the steam-water separator 7 is connected with a liquid discharge port.

[0024] It can be understood that through the cooperation of a series of components, samples can be effectively obtained from the flue gas emission pipeline, and dioxins in the samples can be preliminarily separated and purified for subsequent detection and analysis. The sampling probe group is directly connected to the flue gas emission pipeline, and can obtain flue gas samples and environmental parameters such as temperature, pressure and flow rate in real time, which are crucial for accurate sample collection. The data acquisition unit 5 further collects environmental parameters and humidity information to ensure the integrity and reliability of the sample. The platform processing box 3 is the core part of the flue gas sample processing. It provides the necessary access for the processing of the flue gas sample through the flue gas sample inlet 301 at the bottom and the outlet 308 at the top. The humidity sensor 6 is used to detect the humidity of the flue gas sample, which is very important for understanding the distribution and migration behavior of dioxins in the flue gas. The role of the gas phase adsorber 4 is to preliminarily separate the gas and liquid phases in the flue gas sample, thereby improving the efficiency of subsequent processing. Next, the sample will pass through a series of processing units, including a water separator 7, a refrigerator 9, a molecular sieve filter tube 10, a silica gel filter tube 11, a filter 16, etc. These units play the role of separating water, lowering the temperature, removing impurities, etc., to ensure the purity of the sample. Finally, the volume flow meter 12 and the mass flow meter 13 are used to measure the flow of the sample, the oil pump 14 is used to lift the sample, and the exhaust port 15 is the channel for the sample to flow out. The drain port of the water separator 7 is used to remove the separated water, further ensuring the dryness of the sample.

[0025] In this preferred embodiment, the device for sampling dioxins in waste gas further comprises: User end 19; The processing module 17 is connected to the data acquisition unit 5, the volume flow meter 12, the mass flow meter 13 and the oil pump 14 respectively; the processing module 17 automatically adjusts the flow rate, pressure and humidity of the flue gas sample according to the preset flow rate, pressure and humidity; The cloud 18 is electrically connected to the processing module 17 and the user end 19 respectively.

[0026] It can be understood that the present invention adds the functions of the user terminal 19 and the cloud 18, as well as the intelligent adjustment capability of the processing module 17, on the basis of the sampling device for dioxins in waste gas, thereby improving the intelligence and networking level of the sampling device. The user terminal 19 allows the operator to remotely monitor and control the working state of the sampling device, so that it is convenient to observe the real-time data of the field and adjust the sampling parameters, thereby improving the convenience and flexibility of operation. The processing module 17 can automatically adjust the flow, pressure and humidity of the flue gas sample according to the preset flow, pressure and humidity parameters by connecting with the data acquisition unit 5, the volume flow meter 12, the mass flow meter 13 and the oil pump 14. This automatic adjustment function ensures the stability of the sampling process and the consistency of the sample, and reduces the error caused by improper human operation. Moreover, the introduction of the cloud 18 realizes data interaction and remote control between the sampling device and the user terminal 19. Through the cloud 18, the user can remotely access the sampling data, perform data analysis and management, and can also remotely control the operating state of the sampling device, such as starting, stopping or adjusting the sampling parameters. This networking function greatly improves the use efficiency and data processing capability of the sampling device, especially when multiple sampling points need to be remotely monitored or centrally managed.

[0027] In this preferred embodiment, the platform processing box 3 includes: An inlet 301 and a solids discharge door 302 are provided on the bottom side wall, and an outlet 308 is provided on the top side wall; The filter mechanism is arranged inside the platform processing box. The filter mechanism includes a filter element and an adsorption column 307. The filter element is divided into a first filter element and a second filter element, and the adsorption column 307 is fixed above the second filter element. The adsorption column 307 is used to adsorb gas phase impurities.

[0028] The first filter element includes a first filter screen 304 and a first rotating rod 303. The first filter screen 304 and the first rotating rod 303, one end of the first rotating rod 303 is fixed on the inner wall of the platform processing box 3, and the other end passes through the platform processing box 3 and is arranged on the outer wall of the platform processing box 3, and the first rotating rod 303 is arranged on the center line of the first filter screen 304; The second filter element includes a second filter screen 306 and a second rotating rod 305. The second filter screen 306 and the second rotating rod 305 are both arranged on the upper part of the first filter screen 304, one end of the second rotating rod 305 is fixed on the inner wall of the platform processing box 3, and the other end passes through the platform processing box 3 and is arranged on the outer wall of the platform processing box 3, and the second rotating rod 305 is arranged on the center line of the second filter screen 306; It is understood that in this preferred embodiment, the design of the platform processing box 3 is further refined to include a series of components for processing flue gas samples to ensure the purity and integrity of the samples during the collection process. The structure and component configuration of the platform processing box 3 are intended to provide an efficient and reliable gas sampling and purification solution. The inlet 301 on the bottom side wall of the platform processing box 3 is used to introduce the flue gas sample, while the outlet 308 on the top side wall is used to discharge the treated gas. The design of the solid removal door 302 allows any solid particles that may accumulate on the filter screen to be removed, keeping the system clean and smooth. The first filter screen 304 and the second filter screen 306 and the corresponding rotating rod are provided to provide a rotatable filtering mechanism, so that impurities on the screen can be easily removed without opening the platform processing box 3. This design not only reduces the complexity of maintenance, but also improves the convenience of operation. The function of the adsorption column 307 is to further purify the flue gas sample, remove impurities in the gas phase by adsorption, thereby improving the purity of the sample. The location of the adsorption column 307 above the second filter screen 306 ensures that larger particles are removed from the smoke sample before passing through the adsorption column 307 .

[0029] In this preferred embodiment, the steam-water separator 7 comprises: A front tube 701 and a rear tube 702 are fixed at both ends of the steam-water separator 7, with a gap therebetween. An inclined net 704 is provided at one end of the front tube 701 close to the rear tube 702, and an acute angle is formed between the inclined net 704 and the cross section of the front tube 701. A fan 705 is provided at one end of the rear tube 702, and a water leakage port 703 is provided at the bottom of the steam-water separator 7.

[0030] In this preferred embodiment, the sampling probe group includes: a sampling tube 204, a temperature sensing module, a pressure sensing module and a flow meter 203; the sampling tube 204 is used to obtain flue gas samples, and the temperature sensing module, the pressure sensing module and the flow meter 203 are respectively used to obtain information on the temperature T, pressure P and flow F inside the flue gas exhaust pipe.

[0031] It is understandable that the design of the steam-water separator 7 is intended to effectively separate the moisture and gas in the smoke to ensure the dryness of the collected smoke sample. The structure and working principle of the steam-water separator 7 are as follows: the steam-water separator 7 is composed of a front tube 701 and a rear tube 702, which are fixed at both ends of the separator and have a certain gap between them. Such a structure provides a channel for gas to flow and provides space for the separation of moisture. An inclined net 704 is provided at one end of the front tube 701 close to the rear tube 702, and the inclined net 704 forms an acute angle with the cross section of the front tube 701. This design helps the gas to leave the carried moisture on the inclined net 704 when passing through, because the moisture tends to move along the direction of the inclined net 704 due to inertia, and finally falls to the bottom of the steam-water separator 7 by gravity. A fan 705 is installed at one end of the rear tube 702, and the function of the fan 705 is to increase the flow rate of the gas when passing through the steam-water separator 7, thereby improving the separation efficiency of moisture and gas. The airflow generated by the rotation of the fan 705 can help bring the moisture particles in the gas to the inclined net 704, further ensuring the dryness of the smoke sample. A water leakage port 703 is provided at the bottom of the steam-water separator 7, which is to remove the moisture accumulated at the bottom during the separation process. Through the water leakage port 703, the moisture can be guided to the outside, thereby keeping the inside of the steam-water separator 7 clean and dry.

[0032] In this embodiment, the temperature sensing module and the pressure sensing module are a thermocouple temperature sensor 201 and a micromanometer 202 respectively.

[0033] In summary, the platform processing box 3 is designed to process the flue gas sample more effectively to ensure the purity and integrity of the sample. The inlet 301 on the bottom side wall is used to introduce the flue gas sample, and the outlet 308 on the top side wall is used to discharge the treated gas. In addition, the design of the solid removal door 302 allows the removal of solid particles that may accumulate on the filter screen to keep the system clean and smooth. The first filter screen 304 and the second filter screen 306 and the corresponding rotating rod are provided to provide a rotatable filtering mechanism, so that impurities on the screen can be easily removed without opening the platform processing box 3. This design not only reduces the complexity of maintenance, but also improves the convenience of operation. The function of the adsorption column 307 is to further purify the flue gas sample, remove impurities in the gas phase by adsorption, and thus improve the purity of the sample. The position of the adsorption column 307 above the second filter screen 306 ensures that larger particles have been removed from the flue gas sample before passing through the adsorption column 307. The design of the platform processing box 3 integrates multiple functions, including the introduction, filtration, purification and discharge of samples, as well as the cleaning of solid impurities, forming a compact and efficient flue gas sample processing system. This design not only improves the sampling efficiency, but also ensures the quality of the samples during the sampling process, providing reliable samples for subsequent dioxin detection.

[0034] On the other hand, the present application also relates to a method for collecting dioxins in waste gas, which is collected using the device of any one of claims 1 to 5, and the collection method is: S1: Connect the sampling probe group to the flue gas exhaust pipe, start the temperature sensing module, the pressure sensing module and the flow meter to obtain the information of the temperature T, the pressure P and the flow F inside the flue gas exhaust pipe; S2: Open the smoke sample inlet at the bottom of the platform processing box to allow the smoke sample to enter the platform processing box. In the platform processing box, the humidity H of the smoke sample is detected by a humidity sensor; S3: The flue gas sample undergoes preliminary gas-liquid phase separation through the gas phase adsorber. The separated flue gas sample continues to pass through the steam-water separator to separate the water from the gas and discharge it through the drain port.

[0035] S4: The flue gas sample passes through a refrigerator, a molecular sieve filter tube, a silica gel filter tube, a filter, a volume flow meter and a mass flow meter in sequence to measure the volume flow rate and mass flow rate of the gas, and the volume flow rate and mass flow rate are sent to a processing module; S5: In the processing module, the flue gas samples are precisely controlled and processed according to the collected environmental parameters; the treated flue gas samples are discharged through the oil pump and released into the atmosphere through the exhaust port. At the same time, the user end and the cloud will receive and process the sampling data in real time to monitor and analyze the concentration and emission of dioxins in the exhaust gas.

[0036] It is understandable that the present application provides a method for collecting dioxins in exhaust gas using a specific device, which ensures the effective collection and analysis of dioxin pollutants in exhaust gas through a series of steps. The specific steps of the collection method are as follows: First, connect the sampling probe group to the flue gas exhaust pipe, and start the relevant sensor module and flow meter to collect the temperature, pressure and flow information inside the flue gas exhaust pipe. This information is crucial to understanding and controlling the characteristics and quality of the flue gas sample. Next, open the flue gas sample inlet at the bottom of the platform treatment box to allow the flue gas sample to enter the platform treatment box. In this process, a humidity sensor is used to detect the humidity of the flue gas sample, which helps to further understand the state of the flue gas sample. The flue gas sample is then subjected to preliminary gas-liquid phase separation through a gas phase adsorber to remove liquid pollutants in the flue gas. The separated flue gas sample continues to pass through the steam-water separator to separate the water from the gas and discharge it through the drain port to ensure the dryness of the flue gas sample; the flue gas sample then passes through a series of processing units, including refrigerators, molecular sieve filter tubes, silica gel filter tubes, filters, volume flow meters and mass flow meters to further purify the flue gas sample and measure the volume flow and mass flow of the gas. These data will be transmitted to the processing module for processing to achieve precise control and processing of the flue gas sample. Finally, in the processing module, the flue gas sample is precisely controlled and processed according to the collected environmental parameters. The treated flue gas sample is discharged through the oil pump and released into the atmosphere through the exhaust port. At the same time, the user end and the cloud will receive and process the sampling data in real time to monitor and analyze the concentration and emission of dioxins in the exhaust gas.

[0037] In this preferred embodiment, the environmental parameters in S5 include the temperature T, pressure P and flow F inside the smoke exhaust duct and the humidity H of the smoke sample.

[0038] It is understood that in this preferred embodiment, the environmental parameters in step S5 specifically include the temperature T, pressure P, flow rate F and humidity H of the flue gas sample inside the flue gas exhaust pipe. These parameters are crucial for the collection and analysis of dioxins in exhaust gas because they directly affect the processing of flue gas samples and the accurate measurement of dioxin concentrations. Temperature T is a basic physical property of flue gas, which affects the fluidity and chemical reaction rate of flue gas. During the collection and analysis process, changes in temperature may affect the volatility and adsorption behavior of dioxins, so precise control is required. Pressure P is another important parameter of flue gas in the pipeline, which affects the density and flow state of flue gas. Accurate pressure measurement helps to ensure the representativeness and repeatability of flue gas samples during the collection process. Flow rate F refers to the rate at which flue gas passes through the pipeline, which determines the time for sample collection and the load of the processing device. Flow control is crucial to ensure that enough dioxin samples are collected and avoid sample dilution. Humidity H reflects the moisture content in flue gas, which may affect the distribution and transmission of dioxins. Humidity measurement helps to understand the behavior of dioxins in flue gas and ensure accuracy during sampling. In step S5, the processing module uses these environmental parameters to adjust the flow rate, pressure and humidity of the flue gas sample to optimize the sampling process and ensure the accuracy of the data. In this way, this embodiment not only provides an effective dioxin collection method, but also improves the intelligence level and reliability of the sampling system by real-time monitoring and control of these key parameters.

[0039] In this preferred embodiment, the precise control and processing of the smoke sample according to the collected environmental parameters in S5 specifically includes: By adjusting the mass flow meter or volume flow meter, ensure that the gas flow F remains at the preset value during the sampling process; The flow rate of the flue gas sample is automatically adjusted according to the preset pressure value through the pressure sensor and the corresponding regulating valve; The flow rate of the flue gas sample is adjusted secondary through the humidity sensor and the corresponding dehumidification equipment.

[0040] It is understood that in this preferred embodiment, the specific operations of accurately controlling and processing the flue gas sample in step S5 include the following aspects: by adjusting the mass flow meter or volume flow meter, ensure that the gas flow F is maintained at a preset value during the sampling process. This can ensure the consistency of the sampling rate, so that the collected samples can accurately reflect the actual situation of dioxins in the exhaust gas. The adjustment of the flow meter can respond to the flow changes inside the flue gas exhaust pipeline to ensure the stability and repeatability of the sampling process. The pressure of the flue gas sample is monitored by a pressure sensor, and the pressure is automatically adjusted by a corresponding regulating valve to keep the pressure of the flue gas sample within a preset pressure value range. This automatic pressure regulation system helps to maintain the consistency of sampling conditions and avoid the influence of pressure fluctuations on the sampling results. The humidity of the flue gas sample is monitored by a humidity sensor, and the humidity level of the flue gas sample is adjusted by a corresponding dehumidification device. Humidity control is crucial to ensure the dryness of the flue gas sample and prevent moisture from interfering with the sampling results. Through this humidity control, the accuracy and reliability of the sampling data can be improved.

[0041] Among them, through the pressure sensor and the corresponding regulating valve, the flow rate of the flue gas sample can be automatically adjusted according to the preset pressure value: The pressure value is T0, and the first pressure value T1, the second pressure value T2, the third pressure value T3, the fourth pressure value T4 and the fifth pressure value T5 are preset, and T1<T2<T3<T4<T5; the first-level gas flow rate V1, the second-level gas flow rate V2, the third-level gas flow rate V3, the fourth-level gas flow rate V4 and the fifth-level gas flow rate V5 are preset, and V1<V2<V3<V4<V5; The gas flow level is determined according to the relationship between the pressure value T0 and each preset pressure value; When T0≤T1, the gas flow rate is determined to be the primary gas flow rate V1; When T1<T0≤T2, the gas flow rate is determined to be the secondary gas flow rate V2; When T2<T0≤T3, the gas flow rate is determined to be the third-level gas flow rate V3; When T3<T0≤T4, the gas flow rate is determined to be the fourth-level gas flow rate V4; When T4<T0≤T5, the gas flow rate is determined to be the fifth-level gas flow rate V5.

[0042] Through the humidity sensor and the corresponding dehumidification equipment, the secondary adjustment of the flow rate of the flue gas sample can be: The gas humidity is P0, and the first gas humidity P1, the second gas humidity P2, the third gas humidity P3, the fourth gas humidity P4 and the fifth gas humidity P5 are preset, and P1<P2<P3<P4<P5; the first gas flow adjustment coefficient x1, the second gas flow adjustment coefficient x2, the third gas flow adjustment coefficient x3, the fourth gas flow adjustment coefficient x4 and the fifth gas flow adjustment coefficient x5 are preset, and x1<x2<x3<x4<x5; Determine the gas flow adjustment coefficient according to the relationship between the gas humidity P0 and each preset gas humidity; When P0≤P1, the gas flow adjustment coefficient is determined to be the first gas flow adjustment coefficient x1, and the real-time gas flow is Vi*x1; When P1<P0≤P2, the gas flow adjustment coefficient is determined to be the second gas flow adjustment coefficient x2, and the real-time gas flow is Vi*x2; When P2<P0≤P3, the gas flow adjustment coefficient is determined to be the third gas flow adjustment coefficient x3, and the real-time gas flow is Vi*x3; When P3<P0≤P4, the gas flow adjustment coefficient is determined to be the fourth gas flow adjustment coefficient x4, and the real-time gas flow is Vi*x4; When P4<P0≤P5, the gas flow adjustment coefficient is determined to be the fifth gas flow adjustment coefficient x5, and the real-time gas flow is Vi*x5.

[0043] Among them, i in Vi = any number among 1, 2, 3, 4, 5, indicating the gas flow level.

[0044] It can be understood that the main controller realizes multi-level control of different gas concentrations by setting different reaction gas concentrations and corresponding gas flow levels. This control method provides flexibility and can automatically select the appropriate gas flow according to the change in gas concentration, so as to more effectively calculate the required gas flow. Specifically, the main controller presets the concentration T1 of the first reaction gas, the concentration T2 of the second reaction gas, the concentration T3 of the third reaction gas, the concentration T4 of the fourth reaction gas and the concentration T5 of the fifth reaction gas, and T1<T2<T3<T4<T5. At the same time, the first-level gas flow V1, the second-level gas flow V2, the third-level gas flow V3, the fourth-level gas flow V4 and the fifth-level gas flow V5 are preset, and V1<V2<V3<V4<V5. According to the relationship between the concentration T0 of the reaction gas and the concentration of each preset reaction gas, the main controller can determine the gas flow level. For example, when T0≤T1, the gas flow is determined as the first-level gas flow V1; when T1<T0≤T2, the gas flow is determined as the second-level gas flow V2; when T2<T0≤T3, the gas flow is determined as the third-level gas flow V3; when T3<T0≤T4, the gas flow is determined as the fourth-level gas flow V4; when T4<T0≤T5, the gas flow is determined as the fifth-level gas flow V5. Further, the main controller also adjusts the gas flow level in real time according to the gas humidity to obtain the real-time gas flow. The gas humidity is P0, and the first gas humidity P1, the second gas humidity P2, the third gas humidity P3, the fourth gas humidity P4 and the fifth gas humidity P5 are preset, and P1<P2<P3<P4<P5. The first gas flow adjustment coefficient x1, the second gas flow adjustment coefficient x2, the third gas flow adjustment coefficient x3, the fourth gas flow adjustment coefficient x4 and the fifth gas flow adjustment coefficient x5 are preset, and x1<x2<x3<x4<x5. According to the relationship between the gas humidity P0 and each preset gas humidity, the main controller can determine the gas flow adjustment coefficient. For example, when P0≤P1, the gas flow adjustment coefficient is determined as the first gas flow adjustment coefficient x1, and the real-time gas flow is determined as Vix1; when P1<P0≤P2, the gas flow adjustment coefficient is determined as the second gas flow adjustment coefficient x2, and the real-time gas flow is determined as Vix2; when P2<P0≤P3, the gas flow adjustment coefficient is determined as the third gas flow adjustment coefficient x3, and the real-time gas flow is determined as Vix3; when P3<P0≤P4, the gas flow adjustment coefficient is determined as the fourth gas flow adjustment coefficient x4, and the real-time gas flow is determined as Vix4; when P4<P0≤P5, the gas flow adjustment coefficient is determined as the fifth gas flow adjustment coefficient x5, and the real-time gas flow is determined as Vi*x5.The main controller presets different gas flow data and corresponding gas flow adjustment coefficients, allowing the system to perform real-time calculations of gas flow under actual conditions, thereby providing a multi-level gas flow response mechanism that can be flexibly adjusted according to real-time gas humidity to more accurately determine the specific factors that actually control the growth of nanomaterials.

[0045] In summary, the present invention provides a sampling device and method for collecting dioxins in exhaust gas. The core components of the sampling device include a sampling probe group, a data acquisition unit, a platform processing box, a humidity sensor, a gas phase adsorber, and a series of gas processing and measuring equipment, such as a steam-water separator, a refrigerator, a molecular sieve filter tube, a silica gel filter tube, a filter, a volume flow meter, and a mass flow meter. These components work together to effectively separate and collect dioxins from flue gas, while ensuring that environmental parameters such as temperature, pressure, flow, and humidity during the sampling process are accurately controlled. In addition, the sampling device may also include a user end and a cloud, which are interconnected with these parts through a processing module to achieve remote monitoring and processing of data. This design enables the sampling device to not only be operated on-site, but also to be remotely controlled and analyzed through the network, greatly improving the sampling efficiency and data processing capabilities. The sampling method is guided by a series of steps, including connecting the sampling probe group to the flue gas emission pipeline, starting the sensor module and the flow meter, opening the platform treatment box inlet, performing gas-liquid phase separation through the gas phase adsorber and the steam-water separator, purifying the flue gas sample through the refrigerator and the filter equipment, and measuring the gas flow through the volume flow meter and the mass flow meter. Finally, the flue gas sample is accurately controlled and processed in the processing module according to the collected environmental parameters, and the processed flue gas sample is discharged through the oil pump. In general, the present invention provides an efficient and reliable solution for environmental monitoring and industrial emission control through its carefully designed sampling device and method, which can accurately monitor and analyze the concentration and emission of dioxins in the exhaust gas.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A dioxin sampling device in waste gas, characterized in that: include: A sampling probe group, one end of which is connected to the flue gas emission pipeline, and the sampling probe group is used to obtain the flue gas sample and environmental parameters of the flue gas emission pipeline, and the environmental parameters are temperature T, pressure P and flow F; a data acquisition unit, connected to the sampling probe group, and the data acquisition unit is used to collect information on environmental parameters and humidity H; a platform processing box, connected to the sampling probe group, and the bottom of the platform processing box is provided with an inlet for flue gas samples, and the top is provided with an outlet; a humidity sensor, connected to the platform processing box, and the humidity sensor is used to obtain the humidity H of the flue gas sample; a gas phase adsorber, connected to the platform processing box, and the gas phase adsorber is used to preliminarily separate the gas and liquid phases; and a gas-water separator, a refrigerator, a molecular sieve filter tube, a silica gel filter tube, a filter, a volume flow meter, a mass flow meter, an oil pump and an exhaust port connected in sequence; Wherein, the steam-water separator is connected with a liquid discharge port.

2. The dioxin sampling device in waste gas according to claim 1, characterized in that: Also includes: User end; A processing module, which is respectively connected to the data acquisition unit, the volume flow meter, the mass flow meter and the oil pump; the processing module automatically adjusts the flow rate, pressure and humidity of the flue gas sample according to the preset flow rate, pressure and humidity; The cloud end is electrically connected to the processing module and the user end respectively.

3. The dioxin sampling device in waste gas according to claim 2, characterized in that: The platform processing box includes: an inlet and solid discharge door formed on the bottom side wall, and an outlet formed on the top side wall; A filtering mechanism is arranged inside the platform processing box.

4. The dioxin sampling device in waste gas according to claim 3, characterized in that: The filtering mechanism comprises a filter element and an adsorption column. The filter element is divided into a first filter element and a second filter element. The adsorption column is fixed above the second filter element. The adsorption column is used for adsorbing gas-phase impurities.

5. The device for sampling dioxins in waste gas according to claim 4, characterized in that: The first filter element includes a first filter screen and a first rotating rod, one end of the first rotating rod is fixed to the inner wall of the platform processing box, the other end passes through the platform processing box and is arranged on the outer wall of the platform processing box, and the first rotating rod is arranged on the center line of the first filter screen; The second filter element includes a second filter screen and a second rotating rod, both of which are arranged on the upper part of the first filter screen. One end of the second rotating rod is fixed to the inner wall of the platform processing box, and the other end passes through the platform processing box and is arranged on the outer wall of the platform processing box. The second rotating rod is arranged on the center line of the second filter screen.

6. The device for sampling dioxins in waste gas according to claim 5, characterized in that: The steam-water separator comprises: A front tube and a rear tube are fixed at both ends of the steam-water separator, with a gap between the front tube and the rear tube, an inclined net is arranged at one end of the front tube close to the rear tube, an acute angle is formed between the inclined net and the cross section of the front tube, a fan is arranged at one end of the rear tube, and a water leakage port is opened at the bottom of the steam-water separator.

7. The device for sampling dioxins in waste gas according to claim 6, characterized in that: The sampling probe group includes: a sampling tube, a temperature sensing module, a pressure sensing module and a flow meter; the sampling tube is used to obtain flue gas samples, and the temperature sensing module, the pressure sensing module and the flow meter are used to obtain information on the temperature T, pressure P and flow F inside the flue gas exhaust pipe respectively.

8. A method for collecting dioxins in waste gas, characterized in that: The collection is performed using the device described in any one of claims 1 to 7, wherein the collection method is: S1: Connect the sampling probe group to the flue gas exhaust pipe, start the temperature sensing module, the pressure sensing module and the flow meter to obtain the information of the temperature T, the pressure P and the flow F inside the flue gas exhaust pipe; S2: Open the smoke sample inlet at the bottom of the platform processing box to allow the smoke sample to enter the platform processing box. In the platform processing box, the humidity H of the smoke sample is detected by a humidity sensor; S3: The flue gas sample undergoes preliminary gas-liquid phase separation through the gas phase adsorber. The separated flue gas sample continues to pass through the steam-water separator to separate the water from the gas and discharge it through the drain port; S4: The flue gas sample passes through a refrigerator, a molecular sieve filter tube, a silica gel filter tube, a filter, a volume flow meter and a mass flow meter in sequence to measure the volume flow rate and mass flow rate of the gas, and the volume flow rate and the mass flow rate are sent to a processing module; S5: In the processing module, the flue gas samples are precisely controlled and processed according to the collected environmental parameters; the treated flue gas samples are discharged through the oil pump and released into the atmosphere through the exhaust port. At the same time, the user end and the cloud will receive and process the sampling data in real time to monitor and analyze the concentration and emission of dioxins in the exhaust gas.

9. A method for collecting dioxins in waste gas according to claim 8, characterized in that: The environmental parameters in S5 include the temperature T, pressure P and flow F inside the smoke exhaust duct and the humidity H of the smoke sample.

10. A method for collecting dioxins in waste gas according to claim 9, characterized in that: The precise control and processing of the smoke sample according to the collected environmental parameters in S5 specifically includes: By adjusting the mass flow meter or volume flow meter, ensure that the gas flow rate F remains constant during the sampling process; The flow rate of the flue gas sample is automatically adjusted according to the preset pressure value through the pressure sensor and the corresponding regulating valve; The flow rate of the flue gas sample is adjusted secondary through the humidity sensor and the corresponding dehumidification equipment.

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