A sampling device and collection method for dioxins in waste gas

Abstract

The present invention relates to the field of gas sampling technology, disclosing a device and method for sampling and collecting dioxins in waste gas. The device comprises: a sampling probe assembly for acquiring flue gas samples and environmental parameters from a flue gas emission duct; a data acquisition unit connected to the sampling probe assembly and configured to collect information on environmental parameters and humidity (H); a platform processing box connected to the sampling probe assembly, the platform processing box having a flue gas sample inlet at the bottom and an outlet at the top; a humidity sensor for acquiring the humidity (H) of the flue gas sample; a gas adsorber for preliminary separation of gas and liquid phases; and a sequentially connected steam-water separator, a refrigerator, a molecular sieve filter tube, a silica gel filter tube, a filter, a volume flowmeter, a mass flowmeter, an oil pump, and an exhaust port. The device can separate and collect dioxins from flue gas while simultaneously precisely controlling and processing the flue gas sample based on the collected environmental parameters, and then discharge the processed flue gas sample via an 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 advancement of industrialization and rising awareness of environmental protection, monitoring and controlling toxic and hazardous substances such as dioxins in industrial waste gases has become increasingly important. 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 devices and methods for sampling dioxins in waste gases is of great significance for environmental protection and public health.

[0003] Traditional exhaust gas sampling methods often suffer from low sampling efficiency, complex operations, high equipment costs, and difficulties in data analysis. Furthermore, because dioxin concentrations are typically very low, the sampling process requires highly precise control to ensure data accuracy and reliability. Therefore, it is necessary to develop a new sampling device and method that can improve sampling efficiency and data quality while reducing operational complexity and costs. Summary of the Invention

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

[0005] In one aspect, the present invention provides a device for sampling dioxins in waste gas, comprising:

[0006] a sampling probe group, one end of which is connected to the flue gas emission pipe, the sampling probe group being used to obtain flue gas samples and environmental parameters from the flue gas emission pipe, the environmental parameters being temperature T, pressure P and flow F; a data acquisition unit connected to the sampling probe group, the data acquisition unit being used to collect information on environmental parameters and humidity H; a platform processing box connected to the sampling probe group, the bottom of the platform processing box being provided with an inlet for flue gas samples and the top being provided with an outlet; a humidity sensor connected to the platform processing box, the humidity sensor being used to obtain the humidity H of the flue gas samples; a gas phase adsorber connected to the platform processing box, the gas phase adsorber being used to preliminarily separate gas and liquid phases; and 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 connected in sequence;

[0007] Wherein, the steam-water separator is connected with a drain port.

[0008] Optionally, the dioxin sampling device in waste gas further includes:

[0009] User end;

[0010] 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;

[0011] The cloud is electrically connected to the processing module and the user end respectively.

[0012] Optionally, the platform processing box includes:

[0013] an inlet and a solids discharge door provided on the bottom side wall, and an outlet provided on the top side wall;

[0014] A filtering mechanism is provided inside the platform processing box.

[0015] 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.

[0016] 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, and 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;

[0017] 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 on 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.

[0018] Optionally, the steam-water separator includes:

[0019] 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 provided at one end of the front tube close to the rear tube, and an acute angle is formed between the inclined net and the cross section of the front tube. A fan is provided at one end of the rear tube, and a water leakage port is provided at the bottom of the steam-water separator.

[0020] 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 used to obtain information on the temperature T, pressure P and flow F inside the flue gas exhaust pipe respectively.

[0021] 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, wherein the collection method is:

[0022] S1: Connect the sampling probe group to the flue gas exhaust pipe, start the temperature sensing module, pressure sensing module and flow meter to obtain information on the temperature T, pressure P and flow F inside the flue gas exhaust pipe;

[0023] 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 the humidity sensor;

[0024] S3: The flue gas sample passes through the gas adsorber for preliminary gas-liquid separation. 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.

[0025] 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;

[0026] 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.

[0027] Optionally, the environmental parameters in S5 include the temperature T, pressure P and flow F inside the flue gas exhaust duct and the humidity H of the flue gas sample.

[0028] Optionally, the precise control and processing of the flue gas sample according to the collected environmental parameters in S5 specifically includes:

[0029] Ensure that the gas flow rate F remains constant during the sampling process by adjusting the mass flow meter or volume flow meter;

[0030] 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;

[0031] The flow rate of the flue gas sample is adjusted secondary through the humidity sensor and corresponding dehumidification equipment.

[0032] Compared to the prior art, the present invention offers the following advantages: It provides a sampling device and method for collecting dioxins from waste gas. The core components of the sampling device include a sampling probe assembly, 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 flowmeter, and a mass flowmeter. These components work together to effectively separate and collect dioxins from flue gas, while ensuring precise control of environmental parameters such as temperature, pressure, flow rate, and humidity during the sampling process. Furthermore, the sampling device can include a user terminal and a cloud-based system, interconnected with these components via a processing module to enable remote monitoring and processing of data. This design allows the sampling device to be operated not only on-site but also for remote control and data analysis via a network, significantly improving sampling efficiency and data processing capabilities. The sampling method is guided by a series of steps, including connecting the sampling probe assembly to the flue gas exhaust duct, activating the sensor module and flowmeter, opening the platform treatment box inlet, performing gas-liquid phase separation using a gas adsorber and steam-water separator, purifying the flue gas sample using a refrigerator and filtration equipment, and measuring gas flow using a volumetric flowmeter and a mass flowmeter. Finally, the flue gas sample is precisely controlled and processed in the processing module based on the collected environmental parameters, and the processed flue gas sample is discharged via an oil pump. Overall, the present invention, through its carefully designed sampling device and method, provides an efficient and reliable solution for environmental monitoring and industrial emission control, capable of accurately monitoring and analyzing dioxin concentrations and emissions in waste gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0034] Figure 1 This is a schematic overall plan view of a device for sampling dioxins in waste gas according to an embodiment of the present invention;

[0035] Figure 2 A plan view of a sampling probe assembly according to an embodiment of the present invention;

[0036] Figure 3 A three-dimensional perspective view of a platform processing box according to an embodiment of the present invention;

[0037] Figure 4 This is a three-dimensional schematic diagram of a steam-water separator according to an embodiment of the present invention;

[0038] Figure 5It is a planar cross-sectional view of a steam-water separator according to an embodiment of the present invention.

[0039] Among them, 1. Flue; 2. Sampling probe group; 201. Thermocouple temperature sensor; 202. Micromanometer; 203. Flowmeter; 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 adsorber; 5. Number Data acquisition unit; 6. Humidity sensor; 7. Steam-water separator; 701. Front pipe; 702. Rear pipe; 703. Water leak; 704. Inclined mesh; 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

[0040] 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 set forth herein. On the contrary, these embodiments are provided 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, unless there is a conflict, the embodiments of the present disclosure and the features 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 conjunction with the embodiments.

[0041] With the continuous advancement of industrialization, waste gas emissions have become a significant source of environmental pollution. Dioxins, as persistent organic pollutants, pose a serious threat to the environment and human health due to their carcinogenicity and toxicity. Therefore, accurately monitoring and controlling dioxin concentrations in waste gas is of great significance for environmental protection and industrial pollution prevention and control. Currently, the sampling and detection of dioxins in waste gas mainly rely on traditional sampling and analysis methods. These methods often require manual operation and are limited by the performance of the sampling equipment and the technical level of the operator. Furthermore, traditional sampling methods often fail to effectively separate and purify impurities in flue gas samples, thus affecting the accuracy and reliability of the sampling results.

[0042] Therefore, the present invention proposes a waste gas dioxin sampling device designed to improve the automation and intelligence of the sampling process, thereby enabling accurate monitoring and control of dioxins in waste gas. Through the coordinated operation of a series of components, the device effectively acquires samples from flue gas exhaust ducts and performs preliminary separation and purification of dioxins in the samples, facilitating subsequent detection and analysis. Specifically, the waste gas dioxin sampling device includes a sampling probe assembly, a data acquisition unit, a platform processing box, a humidity sensor, a gas adsorber, and a series of processing units, such as a steam-water separator, a cooler, a molecular sieve filter tube, a silica gel filter tube, a filter, a volume flowmeter, a mass flowmeter, an oil pump, and an exhaust port. These components work together to accurately sample and detect dioxins in waste gas. Furthermore, the waste gas dioxin sampling device includes a user terminal and a cloud-based system, interconnected by a processing module to enable remote monitoring and processing of data. This design allows the sampling device to be operated not only on-site but also remotely controlled and analyzed via the network, significantly improving sampling efficiency and data processing capabilities.

[0043] In summary, 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 status in waste gas. The device of the present invention is described in detail below with reference to the accompanying drawings.

[0044] like Figure 1-5 As shown, it can be seen that the present invention proposes a device for sampling dioxins in waste gas, comprising:

[0045] a sampling probe group, one end of which is connected to the flue gas emission pipe, and the sampling probe group is used to obtain flue gas samples and environmental parameters from the flue gas emission pipe, the environmental parameters being temperature T, pressure P and flow rate F; a data acquisition unit 5, connected to the sampling probe group, and used to collect information on environmental parameters and humidity H; a platform processing box 3, connected to the sampling probe group, and having an inlet 301 for a flue gas sample at the bottom and an outlet 308 at the top; a humidity sensor 6, connected to the platform processing box 3, and used to obtain the humidity H of the flue gas sample; a gas phase adsorber 4, connected to the platform processing box 3, and 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 flowmeter 12, a mass flowmeter 13, an oil pump 14 and an exhaust port 15 connected in sequence;

[0046] The steam-water separator 7 is connected with a drain port.

[0047] It can be understood that through the coordinated operation of a series of components, samples can be effectively obtained from the flue gas emission duct, and dioxins in the samples can be initially separated and purified to facilitate subsequent detection and analysis. The sampling probe group is directly connected to the flue gas emission duct, capable of acquiring 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 component of the flue gas sample processing. It provides the necessary access for flue gas sample processing 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 crucial for understanding the distribution and migration behavior of dioxins in the flue gas. The gas phase adsorber 4 functions to initially separate the gas and liquid phases in the flue gas sample, thereby improving the efficiency of subsequent processing. Next, the sample passes through a series of processing units, including a steam-water separator 7, a refrigerator 9, a molecular sieve filter tube 10, a silica gel filter tube 11, and a filter 16. These units separate water, lower the temperature, and remove impurities, ensuring the purity of the sample. Finally, a volume flowmeter 12 and a mass flowmeter 13 measure the flow rate of the sample, an oil pump 14 lifts the sample, and an exhaust port 15 allows the sample to flow out. The drain port of the steam-water separator 7 removes the separated water, further ensuring the dryness of the sample.

[0048] In this preferred embodiment, the device for sampling dioxins in exhaust gas further comprises:

[0049] User end 19;

[0050] 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;

[0051] The cloud 18 is electrically connected to the processing module 17 and the user end 19 respectively.

[0052] As can be appreciated, the present invention builds upon the existing dioxin sampling device in waste gas by adding the functionality of a user terminal 19 and a cloud platform 18, as well as the intelligent adjustment capabilities of the processing module 17. This enhances the sampling device's intelligence and networking capabilities. The user terminal 19 allows the operator to remotely monitor and control the sampling device's operating status, enabling convenient real-time observation of field data and adjustment of sampling parameters, improving operational convenience and flexibility. The processing module 17, through its connection to the data acquisition unit 5, volumetric flowmeter 12, mass flowmeter 13, and oil pump 14, automatically adjusts the flow, pressure, and humidity of the flue gas sample according to preset flow, pressure, and humidity parameters. This automatic adjustment ensures sampling stability and sample consistency, reducing errors caused by improper operation. Furthermore, the introduction of the cloud platform 18 enables data exchange and remote control between the sampling device and the user terminal 19. Through the cloud platform 18, users can remotely access sampled data for data analysis and management, as well as remotely control the sampling device's operating status, such as starting, stopping, and adjusting sampling parameters. This networking capability significantly improves the sampling device's operational efficiency and data processing capabilities, particularly when remote monitoring or centralized management of multiple sampling points is required.

[0053] In this preferred embodiment, the platform processing box 3 includes:

[0054] an inlet 301 and a solids discharge door 302 provided on the bottom side wall, and an outlet 308 provided on the top side wall;

[0055] 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. The adsorption column 307 is fixed above the second filter element and is used to adsorb gaseous impurities.

[0056] The first filter element includes a first filter screen 304 and a first rotating rod 303. One end of the first rotating rod 303 is fixed to the inner wall of the platform processing box 3, and the other end passes through the platform processing box 3 and is set on the outer wall of the platform processing box 3. The first rotating rod 303 is set on the center line of the first filter screen 304;

[0057] 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 portion of the first filter screen 304. One end of the second rotating rod 305 is fixed to 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. The second rotating rod 305 is arranged on the center line of the second filter screen 306.

[0058] It will be appreciated that in this preferred embodiment, the design of the platform processing box 3 is further refined to include a series of components for processing the flue gas sample, ensuring the purity and integrity of the sample during collection. 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 sidewall of the platform processing box 3 is used to introduce the flue gas sample, while the outlet 308 on the top sidewall is used to discharge the processed gas. The solid removal door 302 is designed to remove any solid particles that may accumulate on the filter screen, maintaining a clean and smooth system. The first filter screen 304 and the second filter screen 306, along with their corresponding rotating rods, provide a rotatable filtering mechanism, allowing for convenient removal of impurities from the screens without opening the platform processing box 3. This design not only reduces maintenance complexity but also improves operational convenience. The adsorption column 307 further purifies the flue gas sample by removing impurities from the gas phase through adsorption, thereby improving sample purity. The location of the adsorption column 307 above the second filter screen 306 ensures that larger particles are removed from the flue gas sample before it passes through the adsorption column 307 .

[0059] In this preferred embodiment, the steam-water separator 7 comprises:

[0060] A front tube 701 and a rear tube 702 are fixed at both ends of the steam-water separator 7. There is a gap between the front tube 701 and the rear tube 702. An inclined net 704 is provided at one end of the front tube 701 close to the rear tube 702. The angle formed by the inclined net 704 and the cross section of the front tube 701 is an acute angle. A fan 705 is provided at one end of the rear tube 702. A water leakage port 703 is provided at the bottom of the steam-water separator 7.

[0061] 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 used to obtain information on the temperature T, pressure P and flow F inside the flue gas exhaust pipe respectively.

[0062] As you can understand, the design of the separator 7 is intended to effectively separate moisture from gases in the flue gas, ensuring the dryness of the collected flue gas sample. The structure and operating principle of the separator 7 are as follows: The separator 7 consists of a front tube 701 and a rear tube 702, fixed at both ends of the separator with a certain gap between them. This structure provides a channel for gas to flow and space for water to separate. An inclined mesh 704 is installed at the end of the front tube 701 near the rear tube 702. The inclined mesh 704 forms an acute angle with the cross-section of the front tube 701. This design helps the gas to retain the moisture it carries on the inclined mesh 704 as it passes through. Due to inertia, the moisture tends to move along the inclined mesh 704 and eventually fall to the bottom of the separator 7 due to gravity. A fan 705 is installed at one end of the rear tube 702 to increase the flow rate of the gas through the separator 7, thereby improving the efficiency of water and gas separation. The airflow generated by the rotation of fan 705 helps carry moisture particles in the gas to the inclined screen 704, further ensuring the dryness of the flue gas sample. A drain port 703 is provided at the bottom of the steam-water separator 7 to remove moisture that accumulates at the bottom during the separation process. Through drain port 703, moisture is directed to the outside, keeping the interior of the steam-water separator 7 clean and dry.

[0063] In this embodiment, the temperature sensing module and the pressure sensing module are a thermocouple temperature sensor 201 and a micromanometer 202 respectively.

[0064] In summary, the platform processing box 3 is designed to more efficiently process flue gas samples to ensure sample purity and integrity. An inlet 301 on the bottom sidewall is used to introduce flue gas samples, while an outlet 308 on the top sidewall is used to discharge processed gas. Furthermore, the solids removal door 302 allows for the removal of solid particles that may accumulate on the filter screens, keeping the system clean and fluid. The first and second filter screens 304, 306, and their corresponding rotating rods provide a rotatable filtering mechanism, allowing for convenient removal of impurities from the screens without opening the platform processing box 3. This design not only reduces maintenance complexity but also improves operational convenience. The adsorption column 307 further purifies the flue gas sample by removing impurities from the gas phase through adsorption, thereby improving sample purity. The position of the adsorption column 307 above the second filter screen 306 ensures that larger particles are removed from the flue gas sample before it passes through the adsorption column 307. The platform processing box 3 integrates multiple functions, including sample introduction, filtration, purification, and discharge, as well as the removal of solid impurities, forming a compact and efficient flue gas sample processing system. This design not only improves sampling efficiency but also ensures sample quality during the sampling process, providing reliable samples for subsequent dioxin testing.

[0065] 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:

[0066] S1: Connect the sampling probe group to the flue gas exhaust pipe, start the temperature sensing module, pressure sensing module and flow meter to obtain information on the temperature T, pressure P and flow F inside the flue gas exhaust pipe;

[0067] 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 the humidity sensor;

[0068] S3: The flue gas sample passes through the gas adsorber for preliminary gas-liquid separation. 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.

[0069] 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 the processing module;

[0070] 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.

[0071] 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, the sampling probe group is connected to the flue gas exhaust pipe, and the relevant sensor module and flow meter are started to collect the temperature, pressure and flow information inside the flue gas exhaust pipe. This information is crucial for understanding and controlling the characteristics and quality of the flue gas sample. Next, the flue gas sample inlet at the bottom of the platform processing box is opened to allow the flue gas sample to enter the platform processing box. During this process, the 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 then undergoes preliminary gas-liquid phase separation through a gas phase adsorber to remove liquid pollutants in the flue gas. The separated flue gas sample continues through a degassing device to remove moisture from the gas, which is then discharged through a drain port to ensure dryness. The flue gas sample then passes through a series of processing units, including a refrigerator, 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 and mass flow rates. This data is transmitted to the processing module for precise control and processing of the flue gas sample. Finally, in the processing module, the flue gas sample is precisely controlled and processed based on the collected environmental parameters. The treated flue gas sample is discharged through an oil pump and released into the atmosphere through an exhaust port. Simultaneously, the user end and the cloud receive and process the sampling data in real time to monitor and analyze dioxin concentrations and emissions in the exhaust gas.

[0072] 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.

[0073] It will be appreciated 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 within the flue gas exhaust duct. These parameters are crucial for the collection and analysis of dioxins in exhaust gas, as they directly impact the processing of flue gas samples and the accurate measurement of dioxin concentrations. Temperature T is a fundamental physical property of flue gas, affecting its fluidity and chemical reaction rates. During the collection and analysis process, temperature fluctuations may affect the volatility and adsorption behavior of dioxins, thus requiring precise control. Pressure P is another important parameter of flue gas in the duct, affecting its density and flow properties. Accurate pressure measurement helps ensure representativeness and reproducibility of flue gas samples during collection. Flow rate F refers to the rate at which flue gas passes through the duct, which determines sample collection time and the load on the processing equipment. Controlling flow rate is crucial to ensuring sufficient dioxin sample collection and avoiding sample dilution. Humidity H reflects the moisture content in flue gas, which may affect the distribution and transport of dioxins. Measuring humidity helps understand the behavior of dioxins in flue gas and ensures 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 data accuracy. In this way, this embodiment not only provides an effective dioxin collection method but also improves the intelligence and reliability of the sampling system by monitoring and controlling these key parameters in real time.

[0074] In this preferred embodiment, the precise control and processing of the smoke sample according to the collected environmental parameters in S5 specifically includes:

[0075] By adjusting the mass flow meter or volume flow meter, ensure that the gas flow rate F remains at the preset value during the sampling process;

[0076] 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;

[0077] The flow rate of the flue gas sample is adjusted secondary through the humidity sensor and corresponding dehumidification equipment.

[0078] It will be appreciated that in this preferred embodiment, the precise control and processing of the flue gas sample in step S5 includes the following: The gas flow rate F is maintained at a preset value during the sampling process by adjusting the mass flow meter or volume flow meter. This ensures consistent sampling rates, ensuring that the collected samples accurately reflect the actual dioxin levels in the exhaust gas. The flow meter's adjustment can respond to flow changes within the flue gas exhaust duct, ensuring the stability and repeatability of the sampling process. A pressure sensor monitors the flue gas sample pressure, and a corresponding regulating valve automatically adjusts the pressure to maintain it within a preset pressure range. This automatic pressure regulation system helps maintain consistent sampling conditions and prevents pressure fluctuations from affecting sampling results. A humidity sensor monitors the humidity of the flue gas sample, and a dehumidification device is used to adjust the humidity level. Humidity control is crucial for ensuring the dryness of the flue gas sample and preventing moisture from interfering with sampling results. This humidity control improves the accuracy and reliability of the sampled data.

[0079] Among them, through the pressure sensor and the corresponding regulating valve, the flow rate of the flue gas sample is automatically adjusted according to the preset pressure value as follows:

[0080] The pressure value is T0, and a first pressure value T1, a second pressure value T2, a third pressure value T3, a fourth pressure value T4, and a fifth pressure value T5 are preset, and T1<T2<T3<T4<T5; a first gas flow rate V1, a second gas flow rate V2, a third gas flow rate V3, a fourth gas flow rate V4, and a fifth gas flow rate V5 are preset, and V1<V2<V3<V4<V5;

[0081] Determine the gas flow level based on the relationship between the pressure value T0 and each preset pressure value;

[0082] When T0≤T1, the gas flow rate is determined to be the first-level gas flow rate V1;

[0083] When T1<T0≤T2, the gas flow rate is determined to be the secondary gas flow rate V2;

[0084] When T2<T0≤T3, the gas flow rate is determined to be the third-level gas flow rate V3;

[0085] When T3<T0≤T4, the gas flow rate is determined to be the fourth-level gas flow rate V4;

[0086] When T4<T0≤T5, the gas flow rate is determined to be the fifth-level gas flow rate V5.

[0087] Through the humidity sensor and the corresponding dehumidification equipment, the secondary adjustment of the flue gas sample flow rate can be:

[0088] The gas humidity is P0, and a first gas humidity P1, a second gas humidity P2, a third gas humidity P3, a fourth gas humidity P4, and a fifth gas humidity P5 are preset, and P1<P2<P3<P4<P5; a first gas flow adjustment coefficient x1, a second gas flow adjustment coefficient x2, a third gas flow adjustment coefficient x3, a fourth gas flow adjustment coefficient x4, and a fifth gas flow adjustment coefficient x5 are preset, and x1<x2<x3<x4<x5;

[0089] Determine the gas flow adjustment coefficient based on the relationship between the gas humidity P0 and the preset gas humidity;

[0090] 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;

[0091] 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;

[0092] 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;

[0093] 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;

[0094] 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.

[0095] Among them, i in Vi = any number among 1, 2, 3, 4, 5, which represents the gas flow level.

[0096] It can be understood that the main controller achieves 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 rate based on changes in gas concentration, thereby more efficiently calculating the required gas flow rate. 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, with T1 < T2 < T3 < T4 < T5. At the same time, the primary gas flow rate V1, the secondary gas flow rate V2, the tertiary gas flow rate V3, the quaternary gas flow rate V4, and the fifth gas flow rate V5 are preset, with V1 < V2 < V3 < V4 < V5. Based on the relationship between the reaction gas concentration T0 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 to be a first-level gas flow V1; when T1 < T0 ≤ T2, the gas flow is determined to be a second-level gas flow V2; when T2 < T0 ≤ T3, the gas flow is determined to be a third-level gas flow V3; when T3 < T0 ≤ T4, the gas flow is determined to be a fourth-level gas flow V4; and when T4 < T0 ≤ T5, the gas flow is determined to be a fifth-level gas flow V5. Furthermore, the main controller adjusts the gas flow level in real time based on the gas humidity to obtain real-time gas flow. The gas humidity is P0, and a first gas humidity P1, a second gas humidity P2, a third gas humidity P3, a fourth gas humidity P4, and a fifth gas humidity P5 are preset, with P1 < P2 < P3 < P4 < P5. A first gas flow adjustment coefficient x1, a second gas flow adjustment coefficient x2, a third gas flow adjustment coefficient x3, a fourth gas flow adjustment coefficient x4, and a fifth gas flow adjustment coefficient x5 are preset, with x1 < x2 < x3 < x4 < x5. Based on 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 to be the first gas flow adjustment coefficient x1, and the real-time gas flow is determined to be Vix1; 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 determined to be Vix2; 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 determined to be Vix3; 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 determined to be Vix4; 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 determined to be Vi*x5.By presetting different gas flow data and corresponding gas flow adjustment coefficients, the main controller allows the system to perform real-time calculations of gas flow under actual conditions, thus 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.

[0097] 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 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 precisely 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 allows the sampling device to not only be operated on-site, but also to be remotely controlled and analyzed via the network, greatly improving sampling efficiency and data processing capabilities. The sampling method is guided by a series of steps, including connecting the sampling probe assembly to the flue gas exhaust duct, activating the sensor module and flowmeter, opening the platform treatment box inlet, performing gas-liquid phase separation using a gas adsorber and steam-water separator, purifying the flue gas sample using a refrigerator and filtration equipment, and measuring gas flow using a volumetric flowmeter and a mass flowmeter. Finally, the flue gas sample is precisely controlled and processed in the processing module based on the collected environmental parameters, and the processed flue gas sample is discharged via an oil pump. Overall, the present invention, through its carefully designed sampling device and method, provides an efficient and reliable solution for environmental monitoring and industrial emission control, capable of accurately monitoring and analyzing dioxin concentrations and emissions in waste gas.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the 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 by the scope of protection of the claims of the present invention.

Claims

1. A device for sampling dioxins in waste gas, characterized in that: include: A sampling probe group, one end of which is connected to the flue gas emission pipe, and the sampling probe group is used to obtain flue gas samples and environmental parameters from the flue gas emission pipe, where the environmental parameters are temperature T, pressure P, and flow F; a data acquisition unit, connected to the sampling probe group, and used to collect information on environmental parameters and humidity H; a platform processing box, connected to the sampling probe group, with a flue gas sample inlet at the bottom and an outlet at the top; a humidity sensor, connected to the platform processing box, and used to obtain the humidity H of the flue gas sample; a gas phase adsorber, connected to the platform processing box, and used to preliminarily separate the gas and liquid phases; and 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, which are connected in sequence; Wherein, the steam-water separator is connected with a drain port; Also includes: User end; A processing module 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 rate, pressure and humidity of the flue gas sample according to the preset flow rate, pressure and humidity; The cloud is electrically connected to the processing module and the user end respectively; Platform processing box includes: an inlet and a solids discharge door provided on the bottom side wall, and an outlet provided on the top side wall; Filter mechanism, the filter mechanism is arranged inside the platform processing box; The filter mechanism includes 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 and is used to adsorb gaseous impurities. 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; The steam separator includes: The front pipe and the rear pipe are fixed at both ends of the steam-water separator, and there is a gap between the front pipe and the rear pipe. An inclined net is provided at one end of the front pipe close to the rear pipe. The angle formed by the inclined net and the cross section of the front pipe is an acute angle. A fan is provided at one end of the rear pipe, and a water leakage port is opened at the bottom of the steam-water separator.

2. The device for sampling dioxins in waste gas according to claim 1, 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.

3. A method for collecting dioxins in waste gas, characterized in that: The device according to any one of claims 1-2 is used for collection, and the collection method is as follows: S1: Connect the sampling probe group to the flue gas exhaust pipe, start the temperature sensing module, pressure sensing module and flow meter to obtain information on the temperature T, pressure P and 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 the humidity sensor; S3: The flue gas sample undergoes preliminary gas-liquid phase separation through the gas adsorber. The separated flue gas sample continues to pass through the steam-water separator to separate the water from the gas and is discharged 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 mass flow rate are sent to the 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.

4. A method for collecting dioxins in waste gas according to claim 3, characterized in that: The environmental parameters in S5 include the temperature T, pressure P and flow F inside the flue gas exhaust duct and the humidity H of the flue gas sample.

5. A method for collecting dioxins in waste gas according to claim 4, characterized in that: S5 accurately controls and processes the flue gas samples based on the collected environmental parameters, specifically including: Ensure that the gas flow rate F remains constant during the sampling process by adjusting the mass flow meter or volume flow meter; 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 corresponding dehumidification equipment.

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