Reaction platform and experimental method thereof

Abstract

The present invention provides a reaction platform and an experimental method thereof, the reaction platform is used for carrying out a combustion or gasification reaction of particles, the reaction platform comprises: a reaction chamber cavity which is a closed cavity used for accommodating particles and carrying out a combustion or gasification reaction; the ignition device is used for igniting particles in the cavity of the reaction chamber; the ultrasonic suspension device comprises a generating part and a reflecting part; wherein the generating part and the reflecting part are oppositely arranged and at least partially extend into the reaction chamber cavity respectively, the end, located in the reaction chamber cavity, of the generating part is used for generating ultrasonic waves, the end, located in the reaction chamber cavity, of the reflecting part is provided with a reflecting surface facing the generating part, and the reflecting surface is a surface recessed towards the generating part. And the reflecting surface reflects the received ultrasonic waves. Therefore, the physical contact between the reaction platform and the particles is avoided, the reaction state of the particles in the practical application process can be conveniently reduced and observed, and the use safety is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of particle combustion or gasification reaction, and in particular to a reaction platform and an experimental method thereof. Background Art

[0002] Fuel in granular form is an important raw material for industrial production. The aforementioned fuel is mostly used to react at high temperature and high pressure in boilers or gasifiers to generate electricity or be converted into synthesis gas, which is then used in chemical production or the synthesis of liquid fuels.

[0003] Among them, achieving efficient and clean utilization of pellet fuels, such as biomass pellets, coal-based pellets, or solid waste-derived fuels, is a key research direction in the current energy and environmental protection fields. Specifically, to achieve this efficient and clean utilization, accurate analysis of the combustion, gasification, or pyrolysis reaction mechanisms of the pellets is crucial for optimizing fuel properties such as fuel design, improving conversion efficiency, and reducing pollutant emissions. Therefore, those skilled in the art need to utilize specific reaction platforms to conduct experiments and test the combustion, gasification, or pyrolysis reactions of the pellets, collect data from the experimental process, and then use the collected data for analysis.

[0004] For the aforementioned experiments, the traditional reaction platforms used for the particles often have physical contact with the particles. In this case, the physical contact can easily disturb the initial state of the particles, making it difficult to achieve instantaneous uniform ignition. Furthermore, due to the insufficient precision of the reaction atmosphere control and the limited means of process observation, such as often relying on data obtained by sensors installed outside the reaction platform to indirectly infer the specific reaction state, it is difficult to simultaneously obtain key dynamic data such as the morphological evolution of the particles at the microscopic level and the propagation of the combustion interface under real reaction conditions. On the other hand, in existing reaction platforms, due to the slow heating rate, the experimental process often differs significantly from the heating rate in the actual application process, making it impossible to truly restore the physical and chemical evolution process of the particles in the actual application process. On the other hand, traditional reaction platforms are mostly made of ordinary heat-resistant steel. In addition to the defect of easy heat transfer to the outside, they are prone to structural failure in high-temperature corrosive atmospheres or extreme thermal shock conditions, posing an experimental safety risk.

[0005] Therefore, the market has a demand for a reaction platform and experimental methods that can avoid physical contact between the reaction platform and the particles, facilitate the restoration and observation of the reaction state of the particles during actual application, and are safe to use. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a reaction platform and an experimental method thereof in order to avoid physical contact between the reaction platform and the particles, facilitate the restoration and observation of the reaction state of the particles during actual application, and ensure safe use.

[0007] The present invention solves the above technical problems through the following technical solutions:

[0008] A reaction platform for performing a combustion or gasification reaction of particles, comprising:

[0009] The reaction chamber cavity is a closed chamber for accommodating particles and performing combustion or gasification reactions;

[0010] an ignition device, the ignition device being used to ignite particles in the reaction chamber cavity;

[0011] An ultrasonic levitation device, the ultrasonic levitation device comprising a generating part and a reflecting part;

[0012] Among them, the generating part and the reflecting part are arranged opposite to each other and each extends at least partially into the interior of the reaction chamber cavity. The end of the generating part located inside the reaction chamber cavity is used to generate ultrasonic waves, and the end of the reflecting part located inside the reaction chamber cavity is provided with a reflecting surface facing the generating part. The reflecting surface is a surface recessed toward the generating part, and the reflecting surface reflects the ultrasonic waves received thereon.

[0013] In this solution, the reaction chamber cavity is used to accommodate particles during the experiment. The reaction chamber cavity is a closed chamber, which helps to isolate the heat generated by the combustion reaction while eliminating interference, thereby facilitating safe use.

[0014] In which, the particles are suspended in the reaction chamber cavity by an ultrasonic suspension device. Specifically, the generating part and the reflecting part in the ultrasonic suspension device are arranged opposite to each other and each extends at least partially into the interior of the reaction chamber cavity. The end of the generating part located inside the reaction chamber cavity is used to generate ultrasonic waves, and the end of the reflecting part located inside the reaction chamber cavity is provided with a reflecting surface facing the generating part, so that the ultrasonic waves generated by the generating part are emitted to the reflecting surface and reflected by the reflecting surface. The generated ultrasonic waves and the reflected ultrasonic waves are coupled in the reaction chamber cavity and achieve an energy balance, that is, the generated ultrasonic waves give the particles a force to move toward the reflecting part, and the ultrasonic waves reflected from the reflecting surface give the particles a force to move toward the generating part. The aforementioned two forces reach a balance and suspend the particles in the reaction chamber cavity.

[0015] Under the aforementioned setting, whether the particles are ignited by the ignition device or during the actual reaction process, the particles never come into physical contact with the reaction platform, which helps to avoid interference with the particles caused by physical contact, and makes it easier to use the reaction platform to restore and observe the reaction state of the particles during actual application.

[0016] Preferably, an air inlet opening is provided on the reaction chamber cavity, and the air inlet opening is used to introduce a reaction atmosphere, and the reaction atmosphere is used to form a specified gas environment in the reaction chamber cavity.

[0017] In this solution, the reaction chamber cavity is provided with an air inlet opening for admitting a reaction atmosphere. This allows the reaction platform to simulate a specific gaseous environment for particle combustion or gasification reactions, facilitating the simulation and observation of the reaction state during the actual application of particles in this specific gaseous environment. Furthermore, since the reaction chamber cavity is sealed, it prevents the leakage of high-temperature corrosive gas atmosphere, thus preventing the impact of such atmosphere on experimental safety.

[0018] Preferably, the reaction platform further comprises a heating body and a heating controller, the heating body is arranged on the inner wall of the reaction chamber cavity, and the heating controller is electrically connected to the heating body;

[0019] Among them, the heating controller is used to control the switching of the heating body between the working state and the non-working state. When the heating body is in the working state, the heating body is energized and uses the electrothermal effect to heat the reaction chamber cavity; when the heating body is in the non-working state, the heating body stops energizing.

[0020] In this solution, a heating controller controls the switching of the heating element between operating and non-operating states, maintaining the reaction chamber and its gaseous environment at a specified temperature. This allows the reaction platform to simulate the gaseous environment required for particle combustion or gasification at a specific temperature, facilitating the simulation and observation of the actual reaction state of particles in a specific gaseous environment at a specific temperature.

[0021] On the other hand, by using the heating controller and the heating body to maintain the reaction chamber cavity at a specified temperature, it also helps to prevent the reaction atmosphere from undergoing qualitative changes such as condensation due to temperature drop, ensuring the effectiveness of the reaction atmosphere during the experiment.

[0022] Preferably, the reaction platform further comprises a steam generating device and a gas source, the steam generating device having a device inlet and a device outlet, and the steam generating device is used to vaporize the fluid entering the device inlet and discharge it from the device outlet, and the device outlet is sequentially connected to the gas source and the gas inlet opening.

[0023] In this solution, the steam generator is used to provide a specified humidity environment within the reaction chamber, facilitating the visualization and observation of the reaction state of particles during actual application under this specific humidity and atmosphere. Furthermore, gas introduced from the gas source propels the reaction atmosphere and steam generated by the steam generator toward the gas inlet opening, thereby improving the efficiency of introducing the reaction atmosphere and steam into the reaction chamber.

[0024] Preferably, a reaction chamber shell is provided outside the reaction chamber cavity, the generating portion is fixedly connected to the top of the reaction chamber shell, and the reflecting portion is fixedly connected to the bottom of the reaction chamber shell;

[0025] Among them, a first window and a second window are opened in the middle section between the top and the bottom of the reaction chamber shell. The first window and the second window are arranged opposite to each other, and the first window and the second window allow light to transmit between the inside and outside of the reaction chamber cavity.

[0026] In this solution, the generator is fixedly attached to the top of the reaction chamber housing, and the reflector is fixedly attached to the bottom of the housing, providing a convenient setup. A first window and a second window, positioned opposite each other, are provided in the middle section of the housing between the top and bottom. These windows are used to observe the combustion or gasification reaction of the particles during the experiment.

[0027] Preferably, the ignition device is arranged outside the reaction chamber cavity and the reaction chamber shell, and the ignition device is a laser ignition device, which is configured to emit a laser beam toward the first window, and the laser beam is transmitted through the first window, the reaction chamber cavity and the second window in sequence.

[0028] In this solution, the ignition device is a laser ignition device. The laser beam generated by the laser ignition device enters from the first window, and after focusing and igniting the particles in the reaction chamber cavity, it passes through the second window, thereby realizing contactless ignition of the particles, thereby preventing potential interference with the initial state of the particles during the ignition process, and also facilitating instantaneous uniform ignition.

[0029] Preferably, the generating portion at least partially extends to the interior of the reaction chamber cavity along the vertical direction, and a first cooling flow path is provided on the generating portion, and the first cooling flow path extends along the height direction of the generating portion.

[0030] In this solution, the first cooling flow path extends along the height direction of the generating part, thereby providing cooling for the generating part, helping to avoid overheating of the generating part, avoiding possible structural failure in the event of overheating, and optimizing safety of use.

[0031] Preferably, an air inlet opening is provided on the reaction chamber cavity, and the air inlet opening is used to introduce a reaction atmosphere, and the reaction atmosphere is used to form a designated experimental environment in the reaction chamber cavity for performing a combustion reaction;

[0032] The reaction platform further includes a steam generating device having a device inlet and a device outlet, and the steam generating device is used to vaporize the fluid introduced into the device inlet and then discharge it from the device outlet;

[0033] A second cooling flow path is provided on the first window. The second cooling flow path extends around the outer contour of the first window. The fluid outlet of the second cooling flow path is connected to the device inlet.

[0034] In this solution, the steam generator is used to provide a specified humidity environment within the reaction chamber, facilitating the visualization and observation of the reaction state of particles during actual application under this specific humidity and atmosphere. Furthermore, gas introduced from the gas source propels the reaction atmosphere and steam generated by the steam generator toward the gas inlet opening, thereby improving the efficiency of introducing the reaction atmosphere and steam into the reaction chamber.

[0035] In addition, a second cooling flow path is provided on the first window, and the fluid outlet of the second cooling flow path is connected to the inlet of the device. In other words, after the second cooling flow path provides a cooling effect for the first window, the heated fluid therein is further passed into the steam generating device, thereby realizing further recycling of the fluid and saving heating energy consumption of the steam generating device when producing steam.

[0036] Preferably, the ultrasonic levitation device further comprises:

[0037] An air cooling part is provided on one end of the generator outside the reaction chamber cavity, and is used to allow air to flow into and cool the generator;

[0038] The ultrasonic controller is electrically connected to one end of the generating part where the air cooling part is provided. The ultrasonic controller is used to control the switching of the generating part between the working state and the non-working state. When the generating part is in the working state, the generating part runs and generates ultrasonic waves; when the generating part is in the non-working state, the generating part stops generating ultrasonic waves.

[0039] In this solution, the ultrasonic levitation device also includes an air-cooling part, which is arranged at one end of the generating part outside the reaction chamber cavity. Therefore, after the ultrasonic controller controls the generating part to enter the working state, the electrical connection between the ultrasonic controller and the generating part is cooled and protected, thereby avoiding structural failure such as electrical connection interruption that may be caused by overheating, and further ensuring safety of use.

[0040] An experimental method, which is applied to any of the above reaction platforms, comprises the following steps:

[0041] S1: heating the reaction chamber cavity to maintain the reaction chamber cavity at a specified temperature;

[0042] S2: The generating part generates ultrasonic waves of a specified frequency, and the reflecting surface reflects the ultrasonic waves received thereon;

[0043] S3: Particles to be subjected to combustion reaction are placed in the reaction chamber cavity. The ultrasonic waves generated by the generator and reflected by the reflective surface cause the particles to enter a suspended state between the generator and the reflective surface.

[0044] S4: introducing a reaction atmosphere into the reaction chamber cavity;

[0045] S5: start the ignition device and ignite the pellets;

[0046] S6: Turn off the ignition device and end the experiment.

[0047] In this solution, by adopting the above experimental method and using any of the above reaction platforms, physical contact between the reaction platform and the particles can be avoided, the reaction state of the particles in actual application can be easily restored and observed, and safe use can be achieved.

[0048] On the basis of conforming to the common sense in this field, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0049] The positive progress of the present invention is that the reaction platform and the experimental method thereof avoid physical contact between the reaction platform and the particles, facilitate the restoration and observation of the reaction state of the particles during actual application, and achieve safe use. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 Schematic diagram of the structure of a reaction platform according to an embodiment of the present invention.

[0051] Description of reference numerals:

[0052] Reaction Platform 100

[0053] Ultrasonic levitation device 200

[0054] Air cooling unit 1

[0055] Generator 2

[0056] Flange structure 3

[0057] Reflection part 4

[0058] Reflective surface 41

[0059] First Window 5

[0060] Second Window 6

[0061] Reaction chamber housing 7

[0062] Reaction chamber 8

[0063] Air intake opening 81

[0064] Conductive thread 9

[0065] Heating controller 10

[0066] Base 11

[0067] Inlet opening duct 12

[0068] Lens 13

[0069] Ignition device 14

[0070] Laser ignition port 15

[0071] Third window 16

[0072] Ultrasonic controller 18

[0073] First water cooling inlet 19

[0074] First water cooling outlet 20

[0075] First water cooling pipe 21

[0076] Second water cooling pipe 22

[0077] Second water cooling inlet 23

[0078] Second water cooling outlet 24

[0079] Steam generating device 25

[0080] Device entrance 251

[0081] Device outlet 252

[0082] Gas source 26 DETAILED DESCRIPTION

[0083] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0084] like Figure 1 As shown, a reaction platform 100 is used to perform a combustion or gasification reaction of particles. The reaction platform 100 includes:

[0085] Reaction chamber 8, which is a sealed chamber for accommodating particles and performing combustion or gasification reactions. Reaction chamber 8 is placed on a specified plane via base 11. Base 11 is a three-dimensional adjustment platform, enabling fine-tuning of the imaging focal plane of the suspended particles.

[0086] an ignition device 14, the ignition device 14 is used to ignite particles in the reaction chamber cavity 8;

[0087] The ultrasonic levitation device 200 includes a generating part 2 and a reflecting part 4;

[0088] Among them, the generating part 2 and the reflecting part 4 are arranged opposite to each other and each partially extends into the interior of the reaction chamber cavity 8. The generating part 2 specifically adopts an ultrasonic generating tube, which is composed of a PZT chip and has an operating frequency that can be adjusted between 20kHz and 100kHz. The end of the generating part 2 located inside the reaction chamber cavity 8 is used to generate ultrasonic waves, and the end of the reflecting part 4 located inside the reaction chamber cavity 8 is provided with a reflecting surface 41 facing the generating part 2. The reflecting surface 41 is a corrugated ultrasonic reflection groove, which reflects the ultrasonic waves received thereon.

[0089] The axial spacing between the ultrasonic generating tube and the ultrasonic reflecting tank is adjustable with an adjustment accuracy of 0.01 mm, thereby meeting the suspension requirements of particles of different particle sizes. The particles are thereby stably suspended in the geometric center of the reaction chamber cavity 8 through the standing wave field between the ultrasonic generating tube and the ultrasonic reflecting tank.

[0090] In specific implementation, the reaction chamber cavity 8 is used to accommodate particles during the experiment. The reaction chamber cavity 8 is a closed chamber, which helps to isolate the heat generated by the combustion reaction while facilitating the elimination of interference, thereby facilitating safe use.

[0091] In which, the particles are suspended in the reaction chamber cavity 8 by the ultrasonic suspension device 200. Specifically, the generating part 2 and the reflecting part 4 in the ultrasonic suspension device 200 are arranged opposite to each other and each partially extends into the interior of the reaction chamber cavity 8. The end of the generating part 2 located inside the reaction chamber cavity 8 is used to generate ultrasonic waves, and the end of the reflecting part 4 located inside the reaction chamber cavity 8 is provided with a reflecting surface 41 facing the generating part 2, so that the ultrasonic waves generated by the generating part 2 are emitted to the reflecting surface 41 and reflected by the reflecting surface 41. The generated ultrasonic waves and the reflected ultrasonic waves are coupled in the reaction chamber cavity 8 and achieve an energy balance. That is, the generated ultrasonic waves give the particles a force to move toward the reflecting part 4, and the ultrasonic waves reflected from the reflecting surface 41 give the particles a force to move toward the generating part 2. The above-mentioned two forces reach a balance and suspend the particles in the reaction chamber cavity 8.

[0092] Under the aforementioned configuration, whether the particles are ignited by the ignition device 14 or during the actual reaction process, the particles never come into physical contact with the reaction platform 100, which helps to avoid interference with the particles caused by physical contact, and thus facilitates the use of the reaction platform 100 to restore and observe the reaction state of the particles in the gasifier or boiler during actual application.

[0093] like Figure 1 As shown, the reaction chamber cavity 8 is provided with an air inlet opening 81 , which is used to introduce a reaction atmosphere, and the reaction atmosphere is used to form a specified gas environment in the reaction chamber cavity 8 .

[0094] The air inlet opening 81 in this embodiment is connected to the air inlet opening 81 pipe 12, and the air inlet opening 81 pipe 12 is further connected to other air supply devices arranged outside. The air inlet opening 81 pipe 12 is also provided with a heating tape with a temperature of 110°C.

[0095] In practice, the reaction chamber 8 is provided with an air inlet opening 81 for admitting a reaction atmosphere. Thus, the reaction platform 100 of this embodiment can simulate a specific gaseous environment for particle combustion or gasification reactions based on specific needs, facilitating the simulation and observation of the reaction state of the particles during actual application in a specific gaseous environment. Furthermore, since the reaction chamber 8 is a sealed chamber, it can prevent the high-temperature corrosive gas atmosphere from leaking out of the reaction chamber 8, thereby preventing the aforementioned gaseous atmosphere from affecting experimental safety.

[0096] like Figure 1 As shown, the reaction platform 100 further includes a heating body (not shown in the figure) and a heating controller 10. The heating body is disposed on the inner wall of the reaction chamber cavity 8. The heating controller 10 is electrically connected to the heating body using a conductive wire 9.

[0097] Among them, the heating controller 10 is used to control the switching of the heating body between the working state and the non-working state. When the heating body is in the working state, the heating body is energized and uses the electrothermal effect to heat the reaction chamber cavity 8; when the heating body is in the non-working state, the heating body stops energizing.

[0098] The heating element in this embodiment is an annular heating element, more specifically, a ceramic-encapsulated resistance heater. Furthermore, the annular heating element extends over the entire inner wall of the reaction chamber 8, thereby achieving efficient and uniform heating of the reaction chamber 8.

[0099] In addition, the heating controller 10 in this embodiment is a PID constant temperature controller, which is set to a constant temperature of ±2°C of the water vapor condensation temperature corresponding to the experimental pressure, and its temperature control accuracy is between ±1°C, thereby ensuring the temperature control effect and ensuring that the water vapor in the reaction atmosphere is always kept in a gaseous state.

[0100] In practice, the heating controller 10 controls the switching of the heating element between an operating state and an inoperative state, thereby maintaining the reaction chamber 8 and the gas environment therein at a specified temperature. Thus, the reaction platform 100 of this embodiment can simulate a gas environment suitable for particle combustion or gasification reactions at a specific temperature, based on specific requirements. This further facilitates the simulation and observation of the reaction state of particles in a specific gas environment at a specific temperature during actual application.

[0101] On the other hand, by using the heating controller 10 and the heating body to maintain the reaction chamber cavity 8 at a specified temperature, it is also helpful to prevent the reaction atmosphere from undergoing qualitative changes such as condensation due to temperature reduction, thereby ensuring the effectiveness of the reaction atmosphere during the experiment.

[0102] As an alternative embodiment, those skilled in the art should also be able to consider using a fluid conduit to replace the aforementioned annular heating assembly. Specifically, those skilled in the art can pass a high-temperature fluid through the fluid conduit, thereby utilizing the heat conduction and heat radiation of the fluid conduit itself to achieve a heating function. The fluid conduit can also be controlled by the heating controller 10, thereby passing the high-temperature fluid in the operating state and interrupting the high-temperature fluid flow in the non-operating state. This embodiment is not limited to this.

[0103] like Figure 1 As shown, the reaction platform 100 also includes a steam generating device 25 and a gas source 26. The steam generating device 25 adopts a two-stage preheating design. The first stage preheating increases the temperature of the fluid to 80°C, and the second stage preheating increases the temperature of the fluid to a vaporization section temperature of 130°C±2°C, wherein the steam saturation is 95% or above.

[0104] The steam generating device 25 has a device inlet 251 and a device outlet 252, and the steam generating device 25 is used to vaporize the fluid introduced into the device inlet 251 and discharge it from the device outlet 252. The device outlet 252 is connected to the gas source 26 and the air inlet opening 81 in turn. In a specific implementation, the steam generating device 25 is used to provide a specified humidity environment for the inner body of the reaction chamber cavity 8, so as to facilitate the restoration and observation of the reaction state of the particles in the actual application process under a specific gas and humidity environment. In addition, the gas introduced from the gas source 26 can push the reaction atmosphere and the steam generated by the steam generating device 25 to the air inlet opening 81, thereby improving the efficiency of introducing the reaction atmosphere and steam into the reaction chamber cavity 8.

[0105] Furthermore, the gas source 26 in this embodiment integrates five independent high-pressure gas cylinders containing oxygen, carbon dioxide, nitrogen, argon, and hydrogen. These five independent high-pressure gas cylinders utilize mass flow controllers to connect and mix the gases in a specified ratio. Heat-tracing and heat-insulating piping is also provided to maintain the temperature of the gases during these connections and mixing processes. However, those skilled in the art will appreciate that other gases may be introduced to meet the needs of simulating different gas environments, and this embodiment is not intended to limit this.

[0106] like Figure 1 As shown, a reaction chamber shell 7 is provided outside the reaction chamber cavity 8. The reaction chamber shell 7 is made of a high-temperature resistant ceramic composite material. The generating part 2 is fixedly connected to the top of the reaction chamber shell 7, and the reflecting part 4 is fixedly connected to the bottom of the reaction chamber shell 7.

[0107] Among them, a first window 5 and a second window 6 are opened in the middle section between the top and the bottom of the reaction chamber shell 7. The first window 5 and the second window 6 are arranged opposite to each other, and the first window 5 and the second window 6 allow light to transmit between the inside and outside of the reaction chamber cavity 8.

[0108] In this embodiment, the fixed connection between the generating part 2 and the reaction chamber shell 7 adopts a flange structure 3, which is directly integrated into the top of the reaction chamber shell 7, thereby achieving easy disassembly of the generating part 2 relative to the reaction chamber shell 7 and a good sealing effect.

[0109] Furthermore, those skilled in the art should also be able to conceive of setting multi-layer graphite sealing gaskets at various connection positions on the flange structure 3. At the same time, the pre-tightening force of each bolt on the flange structure 3 can be controlled and adjusted using a torque wrench, thereby ensuring airtightness under high temperature conditions. In a specific implementation, the generating part 2 is fixedly connected to the top of the reaction chamber shell 7, and the reflecting part 4 is fixedly connected to the bottom of the reaction chamber shell 7, thereby providing a setting method that is easy to implement. Among them, the middle section of the reaction chamber shell 7 between the top and the bottom is provided with a first window 5 and a second window 6 that are relatively arranged. The first window 5 and the second window 6 are used to observe the combustion or gasification reaction of the particles during the experiment.

[0110] In addition to the aforementioned first window 5 and second window 6, a third window 16 and a fourth window (not shown) are provided in the middle section of the reaction chamber housing 7 between the top and bottom. The third window 16 and the fourth window are also arranged opposite each other, and the four windows are symmetrically distributed along the central axis of the reaction platform 100. Under the aforementioned arrangement, those skilled in the art can designate specific uses for different windows, for example, using the first window 5 and the second window 6 as optical channels for laser ignition of particles, while using the third window 16 and the fourth window for observation and recording of the experiment. In addition, according to actual needs, those skilled in the art should also be able to conceive of providing other numbers of windows greater than four, such as additional fifth and sixth windows, and designating specific uses for the newly added windows, and this embodiment is not limited thereto.

[0111] Furthermore, the first window 5, the second window 6, the third window 16 and the fourth window in this embodiment are each provided with a lens 13, and each window is connected to the reaction chamber housing 7 by four bolts and a receiving groove corresponding to the lens 13. The connection in each window is provided with a sealing gasket such as a fluororubber sealing gasket, and each window is provided with a quick-release buckle structure for facilitating the replacement of the lens 13.

[0112] The lenses 13 are made of zinc selenide or optical glass coated with a carbon dioxide laser anti-reflection coating, thereby enhancing the durability and heat resistance of the lenses 13 when exposed to laser beams. Those skilled in the art will appreciate that when the corresponding windows are not used as optical paths for the laser beam, they can be made of other, less expensive materials, such as ordinary silicon dioxide, and this embodiment is not limited thereto.

[0113] like Figure 1 As shown, the ignition device 14 is arranged outside the reaction chamber cavity 8 and the reaction chamber shell 7. The ignition device 14 is a laser ignition device. The laser ignition device is configured to emit a laser beam toward the first window 5 through the laser ignition port 15. The laser beam is transmitted through the first window 5, the reaction chamber cavity 8 and the second window 6 in sequence.

[0114] The optical ignition device is specifically a carbon dioxide laser that generates a carbon dioxide laser beam. The output wavelength of the carbon dioxide laser is 10.6 μm, which can enable the particles to heat up rapidly when focused. The focused spot diameter of the laser beam generated by it can be adjusted between 100 and 500 μm using a collimating lens group equipped with electric adjustment, thereby accurately matching the ignition requirements of particles of different particle sizes.

[0115] In a specific implementation, the ignition device 14 is a laser ignition device. The laser beam generated by the laser ignition device enters from the first window 5, and after focusing and igniting the particles in the reaction chamber cavity 8, it passes through the second window 6, thereby realizing contactless ignition of the particles, thereby preventing potential interference with the initial state of the particles during the ignition process, and also facilitating instantaneous uniform ignition.

[0116] like Figure 1 As shown, the generating part 2 partially extends to the interior of the reaction chamber cavity 8 along the vertical direction. A first cooling flow path is provided on the generating part 2 , and the first cooling flow path extends along the height direction of the generating part 2 .

[0117] In this embodiment, the first cooling flow path is a first water-cooling pipe 21 . The first water-cooling pipe 21 has a first water-cooling inlet 19 and a first water-cooling outlet 20 .

[0118] In a specific implementation, the first cooling flow path extends along the height direction of the generating part 2, thereby providing cooling for the generating part 2, helping to avoid overheating of the generating part 2, avoiding structural failure that may occur in the event of overheating, and optimizing safety of use.

[0119] As an alternative embodiment, relative to the arrangement in which the first cooling flow path extends along the height direction of the generating portion 2 in this embodiment, those skilled in the art should also be able to conceive of adjusting the specific extension method of the first cooling flow path, for example, making the first cooling flow path spirally extend around the generating portion 2 along the height direction of the generating portion 2, that is, in an S-shaped winding arrangement, thereby further optimizing the cooling effect and being able to maintain the surface temperature of the cooled position at 50°C or below, which is not limited in this embodiment.

[0120] like Figure 1 As shown, the reaction chamber cavity 8 is provided with an air inlet opening 81, which is used to introduce a reaction atmosphere, and the reaction atmosphere is used to form a designated experimental environment for the combustion reaction in the reaction chamber cavity 8;

[0121] The reaction platform 100 further includes a steam generating device 25 , which has a device inlet 251 and a device outlet 252 , and the steam generating device 25 is used to vaporize the fluid entering the device inlet 251 and then discharge it from the device outlet 252 ;

[0122] A second cooling flow path is provided on the first window 5 , and the second cooling flow path extends around the outer contour of the first window 5 . The fluid outlet of the second cooling flow path is connected to the device inlet 251 .

[0123] The second cooling flow path in this embodiment is a second water-cooling pipe 22 , which has a second water-cooling inlet 23 and a second water-cooling outlet 24 .

[0124] In practice, steam generator 25 is used to provide a specified humidity environment within reaction chamber 8, facilitating the visualization and observation of the reaction state of particles during actual application under this specific humidity environment. Furthermore, the gas introduced from gas source 26 propels the reaction atmosphere and the vapor generated by steam generator 25 toward gas inlet opening 81, thereby improving the efficiency of introducing the reaction atmosphere and vapor into reaction chamber 8.

[0125] In addition, a second cooling flow path is provided on the first window 5, and the fluid outlet of the second cooling flow path is connected to the device inlet 251. In other words, after the second cooling flow path provides a cooling effect for the first window 5, the heated fluid therein is further passed into the steam generating device 25, thereby realizing further recycling of the fluid and saving heating energy consumption of the steam generating device 25 when producing steam.

[0126] Similarly to the above, those skilled in the art should also be able to think of arranging the second cooling flow path in an S-shaped circuitous arrangement, thereby further optimizing the cooling effect and being able to maintain the surface temperature of the cooled location below 50°C. This embodiment does not limit this.

[0127] As an alternative embodiment, the first water-cooling tube 21 and the second water-cooling tube 22 can also be connected in series to form a double-circulation water cooling system, that is, the fluid flowing through the first water-cooling tube 21 and cooling the generating part 2 is further passed to the second water-cooling tube 22 and used to cool the window, or the fluid flowing through the second water-cooling tube 22 and cooling the window is further passed to the first water-cooling tube 21 and used to cool the generating part 2, thereby further improving the utilization efficiency of the fluid used for cooling. This embodiment does not limit this.

[0128] like Figure 1 As shown, the ultrasonic levitation device 200 further includes:

[0129] The air cooling part 1 is provided on one end of the generating part 2 outside the reaction chamber cavity 8 and is used to allow air to flow in and cool the generating part 2;

[0130] The ultrasonic controller 18 is electrically connected to one end of the generating unit 2 on which the air-cooling unit 1 is provided. The ultrasonic controller 18 is used to control the switching of the generating unit 2 between the working state and the non-working state. When the generating unit 2 is in the working state, the generating unit 2 runs and generates ultrasonic waves; when the generating unit 2 is in the non-working state, the generating unit 2 stops generating ultrasonic waves.

[0131] In a specific implementation, the ultrasonic levitation device 200 also includes an air-cooling part 1, which is arranged on one end of the generating part 2 outside the reaction chamber cavity 8. Therefore, after the ultrasonic controller 18 controls the generating part 2 to enter the working state, the electrical connection between the ultrasonic controller 18 and the generating part 2 is cooled and protected, thereby avoiding structural failure such as electrical connection interruption that may be caused by overheating, and further ensuring safety of use.

[0132] The ultrasonic controller 18 in this embodiment is directly integrated with an adaptive frequency tracking algorithm. When the particle drifts in position, that is, deviates from the geometric center of the reaction chamber cavity 8, the frequency can be readjusted within 50ms and the particle is forced to return to the geometric center of the reaction chamber cavity 8.

[0133] In addition, the air cooling section 1 used in this embodiment is specifically a forced air cooling jacket, which is provided on one end of the generator 2 located outside the reaction chamber cavity 8 and cools the generator 2 by passing air. However, those skilled in the art should also be able to conceive of using other types of air cooling sections, such as a cold air generating device, to cool the generator 2, and this embodiment is not limited to this.

[0134] This embodiment further provides an experimental method, which is applied to any of the above reaction platforms 100, and includes the following steps:

[0135] S1: heating the reaction chamber cavity 8 to maintain the reaction chamber cavity 8 at a specified temperature;

[0136] S2: The generator 2 generates ultrasonic waves of a specified frequency, and the reflective surface 41 reflects the ultrasonic waves received thereon;

[0137] S3: Particles to be subjected to combustion reaction are placed in the reaction chamber cavity 8. The ultrasonic waves generated by the generating part 2 and reflected by the reflecting surface 41 cause the particles to enter a suspended state between the generating part 2 and the reflecting surface 41.

[0138] S4: introducing a reaction atmosphere into the reaction chamber cavity 8;

[0139] S5: Start the ignition device 14 and ignite the particles;

[0140] S6: Turn off the ignition device 14 and end the experiment.

[0141] In specific implementation, by adopting the above experimental method and using any of the above reaction platforms 100, physical contact between the reaction platform 100 and the particles can be avoided, the reaction state of the particles in actual application can be restored and observed, and safety of use can be achieved.

[0142] The following provides a preferred example. When conducting an experiment, the heating element and heating controller 10 must first be activated. After heating the reaction chamber cavity 8 to a stable, designated temperature, the ultrasonic levitation device 200 is activated, and the ultrasonic frequency is automatically adjusted via the ultrasonic controller 18. The second window 6 is then opened, and particles are placed at the suspension point within the reaction chamber cavity 8 via the second window 6. After the particles have been stably suspended for ten seconds, the second window 6 is closed. Furthermore, the experimental recording tools, such as the backlight source, high-speed camera, and microscope lens, located at the third and fourth windows are adjusted, and appropriate recording parameters are selected to record the subsequent reaction process. After all pre-experimental conditions are set, the reaction atmosphere is introduced through the steam generator 25 and gas source 26 via the air inlet opening 81, pipe 12. After a specific period of time, the reaction atmosphere within the reaction chamber cavity 8 can be considered pure. The experimental recording tools and ignition device 14 are then simultaneously activated to fully record the particle reaction process. These tools and ignition device 14 are promptly closed after the particle reaction has concluded.

[0143] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A reaction platform for carrying out combustion or gasification of particles, characterized in that: The reaction platform comprises: A reaction chamber cavity, which is a closed chamber for accommodating particles and performing combustion or gasification reactions; an ignition device, the ignition device being used to ignite particles in the reaction chamber cavity; An ultrasonic levitation device, comprising a generating portion and a reflecting portion; The generating part and the reflecting part are arranged opposite to each other and each extends at least partially into the interior of the reaction chamber cavity. One end of the generating part located inside the reaction chamber cavity is used to generate ultrasonic waves. One end of the reflecting part located inside the reaction chamber cavity is provided with a reflecting surface facing the generating part. The reflecting surface is a surface recessed toward the generating part, and the reflecting surface reflects the ultrasonic waves received thereon.

2. The reaction platform according to claim 1, wherein The reaction chamber cavity is provided with an air inlet opening, and the air inlet opening is used to introduce a reaction atmosphere, and the reaction atmosphere is used to form a specified gas environment in the reaction chamber cavity.

3. The reaction platform according to claim 2, wherein The reaction platform further includes a heating body and a heating controller, wherein the heating body is arranged on the inner wall of the reaction chamber cavity, and the heating controller is electrically connected to the heating body; In which, the heating controller is used to control the switching of the heating body between the working state and the non-working state. When the heating body is in the working state, the heating body is energized and uses the electrothermal effect to heat the reaction chamber cavity; when the heating body is in the non-working state, the heating body stops energizing.

4. The reaction platform according to claim 2, wherein The reaction platform also includes a steam generating device and a gas source. The steam generating device has a device inlet and a device outlet, and the steam generating device is used to vaporize the fluid entering the device inlet and then discharge it from the device outlet. The device outlet is sequentially connected to the gas source and the gas inlet opening.

5. The reaction platform according to claim 1, wherein A reaction chamber shell is provided outside the reaction chamber cavity, the generating portion is fixedly connected to the top of the reaction chamber shell, and the reflecting portion is fixedly connected to the bottom of the reaction chamber shell; A first window and a second window are provided in the middle section of the reaction chamber shell between the top and the bottom. The first window and the second window are arranged opposite to each other, and the first window and the second window allow light to transmit between the inside and the outside of the reaction chamber cavity.

6. The reaction platform according to claim 5, characterized in that The ignition device is arranged outside the reaction chamber cavity and the reaction chamber shell. The ignition device is a laser ignition device. The laser ignition device is configured to emit a laser beam toward the first window. The laser beam is transmitted through the first window, the reaction chamber cavity and the second window in sequence.

7. The reaction platform according to claim 5, characterized in that The generating portion at least partially extends to the interior of the reaction chamber along a vertical direction. A first cooling flow path is provided on the generating portion, and the first cooling flow path extends along a height direction of the generating portion.

8. The reaction platform according to claim 5, wherein The reaction chamber cavity is provided with an air inlet opening, the air inlet opening is used to introduce a reaction atmosphere, and the reaction atmosphere is used to form a designated experimental environment for the combustion reaction in the reaction chamber cavity; The reaction platform further includes a steam generating device having a device inlet and a device outlet, and the steam generating device is used to vaporize the fluid entering the device inlet and then discharge it from the device outlet; A second cooling flow path is provided on the first window. The second cooling flow path extends around the outer contour of the first window. The fluid outlet of the second cooling flow path is connected to the device inlet.

9. The reaction platform according to claim 1, wherein The ultrasonic suspension device also includes: an air cooling portion, the air cooling portion being arranged on one end of the generating portion and located outside the reaction chamber cavity, the air cooling portion being used to allow air to flow in and cool the generating portion; An ultrasonic controller is electrically connected to one end of the generating unit on which the air-cooling unit is provided. The ultrasonic controller is used to control the generating unit to switch between a working state and a non-working state. When the generating unit is in a working state, the generating unit operates and generates ultrasonic waves; when the generating unit is in a non-working state, the generating unit stops generating ultrasonic waves.

10. An experimental method, characterized in that: The experimental method is applied to the reaction platform according to any one of claims 2 to 9, and the experimental method comprises the following steps: S1: heating the reaction chamber cavity to maintain the reaction chamber cavity at a specified temperature; S2: The generating unit generates ultrasonic waves of a specified frequency, and the reflecting surface reflects the ultrasonic waves received thereon; S3: Particles to be subjected to a combustion reaction are placed in the reaction chamber cavity, and the ultrasonic waves generated by the generating part and reflected by the reflecting surface cause the particles to enter a suspended state between the generating part and the reflecting surface; S4: introducing a reaction atmosphere into the reaction chamber cavity; S5: activating the ignition device and igniting the particles; S6: Turn off the ignition device and end the experiment.

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