Experimental device and experimental method for coupling pollution of hydrogen sulfide and dust

Abstract

The invention relates to an experimental device and an experimental method for hydrogen sulfide and dust coupling pollution, and belongs to the technical field of coal mine safety and environmental protection. The device comprises a dust settling chamber, a dust release device, a gas supply device, a PIV device and a waste gas washing and collecting device, is exquisite in design, and can realize a visual experiment of settling of dust under the action of hydrogen sulfide gas. Through the device, the interaction mechanism of hydrogen sulfide and dust can be intuitively revealed. In addition, the experimental method can deeply analyze the coupling pollution law of hydrogen sulfide and dust, provides a powerful theoretical basis for the field hydrogen sulfide removal and dust fall technology, and has important significance for improving the coal mine safety and environmental protection level. Meanwhile, the experimental system is simple in structure and convenient to operate, an effective platform can be provided for sedimentation experiments of dust of different coal types under the influence of the hydrogen sulfide gas, and research work of a hydrogen sulfide and dust coupling pollution mechanism is further promoted.

Description

Technical Field

[0001] The present application relates to the technical field of coal mine safety and environmental protection, and in particular to an experimental device and an experimental method for hydrogen sulfide and dust coupling pollution. Background Art

[0002] With the improvement of the mechanization degree of coal mining, the amount of dust produced in underground coal mining, tunneling, transportation, lifting and other production links will also increase significantly. Long-term inhalation by underground workers will greatly increase the risk of occupational diseases such as pneumoconiosis. What's more serious is that coal mine dust is explosive. When the coal dust in the underground air reaches a certain concentration and there is an ignition source, a coal dust explosion accident may occur. According to the National Health Commission, there were 15,407 new cases of occupational diseases in 2022, including 11,809 cases of pneumoconiosis, accounting for 76.6%. Pneumoconiosis is an irreversible disease that cannot be completely cured. Patients suffer from pulmonary fibrosis, which leads to a decrease in local lung resistance and causes complications.

[0003] At the same time, with the depletion of low-sulfur coal resources and the continuous advancement of desulfurization technology, the mining of high-sulfur coal has become inevitable, and high-sulfur coal often contains a large amount of hydrogen sulfide gas. Hydrogen sulfide is one of the toxic and harmful gases in coal mines. It is not only explosive and corrosive to underground mechanical equipment in coal mines, but also endangers the health of personnel. In severe cases, it can cause contact with people to lose consciousness or die, threatening the normal production of coal mines at all times. With the continuous increase in mining depth, coal mine hydrogen sulfide disasters are still occurring, and the number of deaths from hydrogen sulfide poisoning ranks second in the number of deaths from poisoning in my country. my country clearly stipulates that the allowable concentration of hydrogen sulfide underground shall not exceed 6.6ppm.

[0004] When coal dust and hydrogen sulfide gas coexist underground, the two will interact with each other, affecting the migration and distribution of dust on the working surface, thus causing more serious pollution effects. Most of the existing dust suppression spray measures are only aimed at mine dust, and the presence of hydrogen sulfide will greatly reduce the dust suppression effect. There are few reports on the distribution patterns and mutual influences of hydrogen sulfide and coal dust under the coexistence of hydrogen sulfide, and there is a general lack of theoretical and experimental basis. Therefore, it is necessary to develop an experimental device and method that can visually reveal the coupled sedimentation mechanism of hydrogen sulfide and dust. Summary of the invention

[0005] In order to solve the technical problems existing in the above-mentioned prior art, the present invention proposes a hydrogen sulfide and dust coupled pollution experimental device and experimental method, which can visually reveal the coupled sedimentation mechanism of hydrogen sulfide and dust, effectively analyze the coupled pollution law of hydrogen sulfide and dust, and provide a theoretical basis for on-site hydrogen sulfide removal and dust reduction technology.

[0006] In the first aspect, the present application provides an experimental device for coupling pollution of hydrogen sulfide and dust, which adopts the following technical solution: An experimental device and an experimental method for hydrogen sulfide and dust coupling pollution, comprising a dust settling chamber, a dust release device, an air supply device, a PIV device and an exhaust gas washing and collecting device. The dust settling chamber is designed as a visual closed rectangular structure, and a portable gas detector is arranged inside the chamber, which can detect and display the concentration of hydrogen sulfide and dust in real time, and its structural design and material selection can ensure the safety and visualization effect during the experiment.

[0007] By adopting the above technical solution and designing a visual closed rectangular dust settling chamber, the settling process of hydrogen sulfide and dust can be intuitively displayed, which improves the intuitiveness and operability of the experiment; by equipping the dust settling chamber with a portable gas detector, real-time monitoring of hydrogen sulfide and dust concentrations is achieved, providing accurate data support for scientific researchers.

[0008] Optionally, the dust release device is firmly connected to a side wall of the dust settling chamber via a specific interface, and the device can accurately control the release amount of dust particles and ensure that the dust particles can be evenly distributed in the test area in the dust settling chamber.

[0009] By adopting the above technical solution and setting up a dust release device, the release amount of dust particles can be accurately controlled, and the dust particles can be evenly distributed in the test area in the dust settling chamber, thereby ensuring the accuracy and repeatability of the experiment.

[0010] Optionally, the dust release device includes a dust aerosol generator, an air booster pump and a gas pressure regulating diverter valve, the air booster pump is connected to a power supply and the gas pressure regulating diverter valve, the gas pressure regulating diverter valve is connected to the dust aerosol generator, and the dust aerosol generator, the air booster pump and the gas pressure regulating diverter valve work together to achieve efficient and stable release of dust particles.

[0011] By adopting the above technical scheme, through the setting of the dust aerosol generator, the pre-ground dust particles to be tested can be filled and stored in the dust aerosol generator; through the setting of the air booster pump and the gas pressure regulating diverter valve, the feed speed, injection pressure and flow rate can be set in advance through the sample, so that during the experiment, the experimental dust particles can reach the required fixed mass flow rate for dust injection, further improving the accuracy and repeatability of the experiment.

[0012] Optionally, the gas supply device is connected to a side wall of the dust settling chamber through a dedicated interface, and the gas supply device includes a high-pressure gas cylinder and a piston suction joint, which can stably and continuously release hydrogen sulfide gas to the test area in the dust settling chamber, and the gas supply volume is adjustable.

[0013] By adopting the above technical scheme, through the setting of a high-pressure gas cylinder, the hydrogen sulfide gas to be tested can be stored in the high-pressure gas cylinder; through the setting of the piston exhaust joint, the flow of the gas can be controlled by the piston exhaust joint; thereby, the hydrogen sulfide gas can be stably and continuously released to the test area in the dust settling chamber, and the gas supply volume is adjustable, which provides the possibility of simulating the settling process under different pollution conditions.

[0014] Optionally, the PIV device is precisely installed above the dust settling chamber, and has high-resolution image capture capabilities, which can observe and record the interaction between gas and dust particles and the entire settling process in real time.

[0015] By adopting the above technical solution, the whole process of interaction and sedimentation between gas and dust particles can be observed and recorded in real time through the PIV device.

[0016] Optionally, the PIV device includes a high-power laser source, a high-precision synchronous controller, a high-speed camera and a dedicated computer, wherein the lens of the high-speed camera is precisely aimed at the key area where the gas and dust particles interact and settle, so as to ensure the accuracy and completeness of the experimental data; the dedicated computer can process the image data taken by the high-speed camera according to the set program and algorithm to obtain the transient velocity vector diagram and dust concentration of the dust settling in the dust settling chamber.

[0017] By adopting the above technical scheme, a sheet laser beam can be emitted by a high-power laser source to illuminate a section of the flow field in the dust settling chamber; the tracer particles added to the flow field scatter the laser, so that the laser can be scattered to the side of the flow field; by setting a high-speed camera in a direction perpendicular to the illuminated section, the high-speed camera can continuously capture the behavior of the illuminated flow field at a set time interval, and then transmit the data to a dedicated computer; through the setting of the dedicated computer, the image data captured and transmitted by the high-speed camera can be processed according to the set program and algorithm to obtain the dust settling transient velocity vector diagram and dust concentration in the dust settling chamber; the high-resolution image capture capability of the PIV device enables researchers to observe and record the interaction between gas and dust and the settling process in real time, which helps to reveal the details of the settling mechanism.

[0018] Optionally, the exhaust gas washing and collecting device is connected to the other side wall of the dust settling chamber through a dedicated pipe. The exhaust gas washing and collecting device includes multi-stage high-precision washing bottles, high-precision gas detectors and exhaust gas collection bottles, which can ensure that harmful components in the exhaust gas are completely removed, while accurately detecting and recording the composition and concentration of the exhaust gas.

[0019] By adopting the above technical solution, the design of the exhaust gas scrubbing and collecting device not only ensures the proper treatment of harmful gases, but also can accurately detect and record the exhaust gas composition and concentration, reflecting the environmental protection concept of the present invention.

[0020] Optionally, the dust settling chamber is made of organic glass of a specific thickness, and the thickness is precisely controlled between 0.05-0.08 m to ensure structural stability and optical transparency during the experiment.

[0021] By adopting the above technical solution, sufficient structural strength is ensured and good visualization effect is provided, so that experimenters can intuitively observe the sedimentation process of dust particles in hydrogen sulfide gas.

[0022] In the second aspect, the present application provides an experimental method for coupling pollution of hydrogen sulfide and dust, which adopts the following technical solution: An experimental method for coupled pollution of hydrogen sulfide and dust, comprising the following precise steps: first, introducing hydrogen sulfide gas of precise concentration into the dust settling chamber, and monitoring its concentration change in real time through the portable gas detector; then, accurately feeding dust through the dust aerosol generator under specific settings, and simultaneously using the PIV device to measure the transient velocity vector diagram and dust concentration of dust settling with high precision; after standing still, using the PIV device to measure again, and transmitting all data in real time to a dedicated computer for high-precision processing and analysis; finally, the exhaust gas is discharged after being treated by the exhaust gas washing and collection device.

[0023] By adopting the above technical scheme, the visualization of dust particles during the sedimentation experiment under the action of hydrogen sulfide gas can be realized, the sedimentation experiment of dust of different types of coal under the influence of hydrogen sulfide gas can be carried out, the pollution mechanism of hydrogen sulfide and dust can be studied, and experimental data can be provided for the coupled sedimentation of hydrogen sulfide and dust, which provides a theoretical basis for the coordinated control of coupled pollution of hydrogen sulfide and dust.

[0024] Optionally, in the waste gas treatment step, the waste gas passes through the multi-stage high-efficiency gas washing bottle and the high-precision gas detector in sequence to ensure that hydrogen sulfide and other harmful components in the waste gas are completely removed and the concentration is accurately controlled within a safe range before being discharged, so as to fully ensure the safety and environmental protection of the experimental process.

[0025] By adopting the above technical solution, not only the proper treatment of harmful gases is ensured, but also the exhaust gas composition and concentration can be accurately detected and recorded, which embodies the environmental protection concept of the present invention.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By designing a dust settling chamber with a visual closed rectangular structure, the settling process of hydrogen sulfide and dust can be intuitively displayed, which improves the intuitiveness and operability of the experiment; by equipping the dust settling chamber with a portable gas detector, real-time monitoring of hydrogen sulfide and dust concentrations is achieved, providing accurate data support for scientific researchers; 2. Through the setting of the dust aerosol generator, the pre-ground dust particles to be tested can be filled and stored in the dust aerosol generator; through the setting of the air booster pump and the gas pressure regulating diverter valve, the feed speed, injection pressure and flow rate can be set in advance through the sample, so that during the experiment, the dust particles in the experiment can reach the required fixed mass flow rate for dust injection, further improving the accuracy and repeatability of the experiment; 3. Through the setting of the high-pressure gas cylinder, the hydrogen sulfide gas to be tested can be stored in the high-pressure gas cylinder; through the setting of the piston suction joint, the flow of the gas can be controlled by the piston suction joint; thereby, the hydrogen sulfide gas can be stably and continuously released to the test area in the dust settling chamber, and the gas supply is adjustable, which provides the possibility of simulating the settling process under different pollution conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 It is a schematic diagram of the local structure of an embodiment of the present application.

[0028] Explanation of the accompanying symbols: 1. Air booster pump; 2. Gas pressure regulating and diverter valve; 3. Dust aerosol generator; 4. Gas cylinder; 5. Piston suction joint; 6. Dust settling chamber; 7. Portable gas detector; 8. Primary gas washing bottle; 9. Secondary gas washing bottle; 10. High-precision gas detector; 11. Exhaust gas collection bottle; 12. High-power laser source; 13. High-precision synchronous controller; 14. High-speed camera; 15. Special-purpose computer. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-2 This application is described in further detail.

[0030] An experimental device and experimental method for coupled pollution of hydrogen sulfide and dust, which is not only simple in structure and easy to operate, but also can realize the visualization of dust particles in the sedimentation experiment under the action of hydrogen sulfide gas. Through the invention, researchers can conduct sedimentation experiments of dust of different types of coal under the influence of hydrogen sulfide gas, further reveal the coupled sedimentation mechanism of hydrogen sulfide and dust, and provide a theoretical basis for on-site hydrogen sulfide removal and dust reduction technology.

[0031] Reference Figure 1 and Figure 2, an experimental device for coupling pollution of hydrogen sulfide and dust mainly includes a dust settling chamber 6, a dust release device, an air supply device, a PIV device and an exhaust gas washing and collecting device.

[0032] The dust settling chamber 6 is the core part of the experimental device. It is designed as a visual closed rectangular structure and is made of organic glass with a thickness of 0.06m. This design not only ensures sufficient structural strength, but also provides a good visualization effect, so that the experimenter can intuitively observe the settling process of dust particles in hydrogen sulfide gas. Inside the dust settling chamber 6, a portable gas detector 7 is specially provided, which can detect the concentration of hydrogen sulfide and dust in real time, thereby ensuring accurate control of the experimental process.

[0033] Reference Figure 1 The dust release device is firmly connected to a side wall of the dust settling chamber 6, and is mainly composed of key components such as an air booster pump 1 and a dust aerosol generator 3. The dust aerosol generator 3 can produce stable dust aerosols, while the air booster pump 1 provides the necessary pressure to push the dust particles into the dust settling chamber 6. The gas pressure regulating diverter valve 2 is used to accurately control the release amount of dust particles to meet the needs under different experimental conditions. Through the dust release device, experimenters can simulate dust environments of different concentrations and particle sizes, providing strong experimental support for studying the coupled pollution of hydrogen sulfide and dust.

[0034] Reference Figure 1 The gas supply device is another important component of the experimental device. It is connected to the other side wall of the dust settling chamber 6 and includes key components such as a high-pressure gas cylinder 4 and a piston exhaust joint 5. The high-pressure gas cylinder 4 stores the hydrogen sulfide gas required for the experiment, and the piston exhaust joint 5 is used to adjust the flow and pressure of the gas. By working in coordination with the dust release device, the gas supply device can stably and continuously release hydrogen sulfide gas into the dust settling chamber 6, thereby simulating a hydrogen sulfide gas environment with different concentrations and flow rates. This design allows experimenters to conduct in-depth research on the mechanism of the influence of hydrogen sulfide gas on dust settling.

[0035] Reference Figure 1In order to observe and record the interaction and sedimentation process between gas and dust particles in real time, the present invention is specially equipped with a PIV device. The device is installed above the dust settling chamber 6 and consists of key components such as a high-power laser source 12, a high-precision synchronous controller 13, a high-speed camera 14 and a dedicated computer 15. The high-power laser source 12 can generate a stable laser beam to illuminate the experimental area in the dust settling chamber 6; the high-precision synchronous controller 13 ensures the synchronous operation of the high-power laser source 12 and the high-speed camera 14; the high-speed camera 14 can capture and record the interaction and sedimentation process between gas and dust particles in real time; and the dedicated computer 15 is used to store and process experimental data. Through the PIV device, experimenters can obtain a large amount of high-precision experimental data, providing direct and powerful evidence for revealing the coupled sedimentation mechanism of hydrogen sulfide and dust.

[0036] Reference Figure 1 The exhaust gas scrubber and collection device is the last checkpoint in the experimental device. It is connected to the other side wall of the dust settling chamber 6 through a dedicated pipeline, and includes key components such as a multi-stage high-efficiency scrubber, a high-precision gas detector 10, and an exhaust gas collection bottle 11. In this embodiment, the multi-stage high-efficiency scrubber includes a primary scrubber 8 and a secondary scrubber 9; after the exhaust gas is efficiently treated by the multi-stage scrubber, the harmful components therein are largely removed; then the exhaust gas concentration is ensured to be within a safe range through detection by the high-precision gas detector 10; finally, it is discharged or collected in the exhaust gas collection bottle 11. This design not only ensures the safety and environmental protection of the experimental process, but also provides convenience for subsequent gas analysis.

[0037] The experimental method for the interaction and precipitation of hydrogen sulfide gas and dust particles using the above experimental device includes the following specific steps: 1. Experimental preparation stage: First, check and ensure that all equipment is in normal working condition; then open the gas cylinder 4 and the piston exhaust joint 5 to introduce hydrogen sulfide gas into the dust settling chamber 6; during this process, use a portable gas detector 7 to monitor its concentration changes in real time until the concentration required for the experiment is reached, then close the piston exhaust joint 5; at the same time, open the air booster pump 1 and the gas pressure regulating diverter valve 2 to accurately feed dust through the dust aerosol generator 3 under given settings.

[0038] 2. Experimental stage: During the dust feeding process, the PIV device is used to measure the transient velocity vector diagram and dust concentration of dust settling in the dust settling chamber 6 with high precision to obtain the settling data of dust particles in hydrogen sulfide gas; after the dust feeding is completed, the dust particles are allowed to settle under the action of hydrogen sulfide gas for a period of time; then the PIV device is used again to measure and record the transient velocity vector diagram of dust settling and the change of dust concentration at this time in order to analyze the dynamic characteristics of the settling process.

[0039] 3. Data processing and analysis stage: All measurement data captured by the PIV device are transmitted in real time to a dedicated computer 15 for high-precision processing and analysis; by comparing the data changes at different time points, the interaction mechanism and sedimentation law between hydrogen sulfide gas and dust particles can be revealed; at the same time, the experimental results are comprehensively evaluated in combination with the hydrogen sulfide and dust concentration data monitored in real time by the portable gas detector 7.

[0040] 4. End of the experiment and waste gas treatment stage: After the experiment, all equipment is turned off and the waste gas is discharged after being efficiently treated by the waste gas washing and collection device; before discharge, a high-precision gas detector 10 is used to ensure that the harmful components in the waste gas are completely removed and the concentration is within a safe range to ensure the safety of the experimenters and environmental protection.

[0041] Through the experimental device and method of the present invention, scientific researchers can conduct in-depth research on the coupled sedimentation mechanism of hydrogen sulfide and dust, and provide strong support for safe production and environmental protection in industrial fields such as coal mines.

[0042] The implementation principle of this embodiment is mainly based on visualization technology, precise control and high-resolution measurement. By visualizing the dust settling chamber 6 with a closed rectangular structure, the experimenter can directly observe the settling process of dust particles in hydrogen sulfide gas. At the same time, by using the precise control of the dust release device and the gas supply device, the hydrogen sulfide gas environment with different concentrations and flow rates and the dust environment with different concentrations and particle sizes can be simulated. Combined with the high-resolution measurement capability of the PIV device, the experimenter can obtain a large amount of high-precision experimental data, thereby deeply revealing the coupled settling mechanism of hydrogen sulfide and dust.

[0043] The advantages of the present invention are mainly reflected in the following aspects: 1. Simple structure and convenient operation: The experimental device of the present invention adopts a modular design, and each part is tightly connected and easy to operate. At the same time, the dust settling chamber 6 with a visual closed rectangular structure makes the experimental process more intuitive.

[0044] 2. High-precision measurement and control: Through high-precision equipment such as PIV devices and portable gas detectors7, experimenters can obtain accurate experimental data and perform data processing and analysis in combination with dedicated computers15. This high-precision measurement and control capability provides strong support for revealing the coupled deposition mechanism of hydrogen sulfide and dust.

[0045] 3. Safety and environmental protection: The present invention is specially equipped with an exhaust gas washing and collecting device to ensure that harmful components in the exhaust gas are completely removed and the concentration is within a safe range before being discharged. This design not only ensures the safety of the experimenters, but also meets environmental protection requirements.

[0046] 4. Broad application prospects: The present invention is not only applicable to the research on safe production and environmental protection in industrial fields such as coal mines, but can also provide useful references for other fields involving the interaction between dust and harmful gases.

[0047] In summary, the present invention precisely controls the concentration of hydrogen sulfide gas and the amount of dust particles released, and uses a high-resolution PIV device to observe and record the interaction and sedimentation process between gas and dust in real time. This experimental device and method not only provides a theoretical basis and experimental support for on-site hydrogen sulfide removal and dust reduction technology, but also provides new ideas and methods for research in related fields.

[0048] The experimental device and method of the present invention have broad application prospects in industrial fields such as coal mines. By deeply studying the coupled sedimentation mechanism of hydrogen sulfide and dust, more scientific guidance can be provided for the safe production of coal mines. For example, dust and hydrogen sulfide gas generated during coal mining are two major hidden dangers for safe production in coal mines. Through the experimental device and method of the present invention, a real coal mine environment can be simulated, and the interaction and sedimentation law of dust and hydrogen sulfide gas can be studied, thereby providing a theoretical basis for dust reduction and hydrogen sulfide removal technology in coal mines.

[0049] In addition, the present invention can also be applied to other fields involving the interaction between dust and harmful gases, such as environmental protection, chemical industry, etc. By adjusting the experimental parameters and conditions, the interaction between dust and harmful gases in different environments can be simulated, providing a useful reference for research and development in related fields.

[0050] Looking into the future, with the continuous progress of science and technology and the continuous innovation of experimental technology, the present invention is expected to be applied and promoted in more fields. At the same time, as people pay more and more attention to environmental protection and safe production, the application prospects of the present invention will be broader. We believe that through continuous research and improvement, the present invention will make greater contributions to the development of related fields.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An experimental device for coupling pollution of hydrogen sulfide and dust, characterized in that: The apparatus comprises a dust settling chamber (6), a dust release device, an air supply device, a PIV device and an exhaust gas washing and collecting device. The dust settling chamber (6) is designed as a visual closed rectangular parallelepiped structure, and a portable gas detector (7) is arranged inside the chamber to detect and display the concentration of hydrogen sulfide and dust in real time. The structural design and material selection can ensure the safety and visualization effect during the experiment.

2. The experimental device according to claim 1, characterized in that: The dust release device is firmly connected to a side wall of the dust settling chamber (6) via a specific interface, and the device can accurately control the release amount of dust particles and ensure that the dust particles can be evenly distributed to the test area in the dust settling chamber (6).

3. The experimental device according to claim 2, characterized in that: The dust release device comprises an air booster pump (1), a gas pressure regulating diverter valve (2) and a dust aerosol generator (3); the air booster pump (1) is connected to a power source and the gas pressure regulating diverter valve (2); the gas pressure regulating diverter valve (2) is connected to the dust aerosol generator (3); the dust aerosol generator (3), the air booster pump (1) and the gas pressure regulating diverter valve (2) work in coordination to achieve efficient and stable release of dust particles.

4. The experimental device according to claim 1, characterized in that: The gas supply device is connected to a side wall of the dust settling chamber (6) via a dedicated interface. The gas supply device comprises a high-pressure gas cylinder (4) and a piston air extraction joint (5), and is capable of stably and continuously releasing hydrogen sulfide gas to the test area in the dust settling chamber (6), and the gas supply volume is adjustable.

5. The experimental device according to claim 1, characterized in that: The PIV device is precisely installed above the dust settling chamber (6) and has a high-resolution image capture capability, which can observe and record the interaction between gas and dust particles and the entire settling process in real time.

6. The experimental device according to claim 5, characterized in that: The PIV device comprises a high-power laser source (12), a high-precision synchronous controller (13), a high-speed camera (14) and a dedicated computer (15), wherein the lens of the high-speed camera (14) is precisely aimed at the key area where the gas and dust particles interact and settle, so as to ensure the accuracy and completeness of the experimental data; the dedicated computer (15) can process the image data taken by the high-speed camera (14) according to the set program and algorithm to obtain the dust settling transient velocity vector diagram and dust concentration in the dust settling chamber (6).

7. The experimental device according to claim 1, characterized in that: The waste gas washing and collecting device is connected to the other side wall of the dust settling chamber (6) through a dedicated pipeline. The waste gas washing and collecting device includes a multi-stage high-precision washing bottle, a high-precision gas detector (10) and an exhaust gas collecting bottle (11), which can ensure that harmful components in the waste gas are completely removed, and accurately detect and record the components and concentration of the waste gas.

8. The experimental device according to claim 1, characterized in that: The dust settling chamber (6) is made of organic glass of a specific thickness, and its thickness is precisely controlled between 0.05-0.08 m to ensure structural stability and optical transparency during the experiment.

9. An experimental method for the interaction and sedimentation of hydrogen sulfide gas and dust particles using the experimental device as described in claim 1, comprising the following precise steps: first, introducing a precise concentration of hydrogen sulfide gas into the dust settling chamber (6), and monitoring its concentration changes in real time through the portable gas detector (7); then, accurately feeding dust through the dust aerosol generator (3) under specific settings, and simultaneously using the PIV device to measure the transient velocity vector diagram and dust concentration of dust sedimentation with high precision; after standing, using the PIV device to measure again, and transmitting all data in real time to a dedicated computer (15) for high-precision processing and analysis; finally, the exhaust gas is discharged after being processed by the exhaust gas washing and collection device.

10. The experimental method according to claim 9, characterized in that: In the waste gas treatment step, the waste gas passes through the multi-stage high-efficiency gas washing bottle and the high-precision gas detector (10) in sequence to ensure that hydrogen sulfide and other harmful components in the waste gas are completely removed and the concentration is accurately controlled within a safe range before being discharged, so as to fully ensure the safety and environmental protection of the experimental process.

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