Efficient particle mixing rocking bed reactor based on z-axis simple harmonic rocking motion

Abstract

The invention discloses a high-efficiency particle mixing rocking bed reactor based on z-axis simple harmonic rocking motion, and relates to the field of solar-driven thermal chemical reaction, the high-efficiency particle mixing rocking bed reactor comprises a rocking bed main body, a gas distribution device, a driving device and a test control device, the rocking bed main body is arranged on the power output end of the driving device, and the test control device is arranged on the rocking bed main body; the rocking bed main body is fixedly connected with the driving device through a flange structure, the air outlet end of the air distribution device is hermetically connected with the air inlet interface of the rocking bed main body, the detection end of the test control device extends into the rocking bed main body, and the control end of the test control device is electrically connected with the driving device and the air distribution device respectively. The efficient particle mixing rocking bed reactor based on the z-axis simple harmonic rocking motion comprises a rocking bed main body device, a gas distribution device, a driving device and a test control device, fluidization-like is achieved without carrier gas, the temperature uniformity and the photo-thermal efficiency of a bed layer are improved, the methane conversion rate is improved, and solar energy drives a thermal chemical reaction.

Description

Technical Field

[0001] This invention relates to the field of solar-driven thermochemical reaction technology, and in particular to a high-efficiency particle-blending rocking bed reactor based on z-axis simple harmonic rocking motion. Background Technology

[0002] Driven by solar concentrators, traditional stacked reaction beds exhibit significant hot spots due to the Gaussian distribution of light spots and the Beer-Lambert law governing radiative transfer. This leads to uneven reaction rates and even material sintering failure. For solar-driven thermochemical reactions, especially in typical processes such as CO2 capture, methane dry reforming, and pyrolysis synthesis, bed temperature uniformity and particle mixing state have a decisive impact on conversion efficiency.

[0003] Currently, fluidized bed reactors are widely used as the mainstream mixing device to improve the heat / mass diffusion rate. They rely on high-speed gas to blow solid particles away from the bottom of the bed, and in the suspended state, they undergo high-frequency collisions and movements to achieve high heat transfer and high reaction efficiency.

[0004] However, fluidized beds have some drawbacks in application: on the one hand, a continuous supply of high-velocity carrier gas is required, resulting in a short residence time for the reactant gas and limiting the conversion rate; on the other hand, a large amount of unreacted gas escapes, causing raw material waste, and the carrier gas penetrating the bed carries a large amount of heat away from the system, resulting in significant energy loss. In addition, the amount of reactant gas is limited by fluidization conditions, resulting in a narrow process window and hindering the independent adjustment of thermochemical reaction parameters. Summary of the Invention

[0005] The purpose of this invention is to provide a high-efficiency particle blending rocking bed reactor based on z-axis simple harmonic rocking motion, comprising a rocking bed body, gas distribution, driving, and testing and control devices. It achieves fluidization without carrier gas, improves bed temperature uniformity and photothermal efficiency, enhances methane conversion rate, and enables solar-driven thermochemical reactions.

[0006] This invention provides a high-efficiency particle blending rocking bed reactor based on z-axis simple harmonic rocking motion, comprising a rocking bed body, a gas distribution device, a drive device, and a test control device. The rocking bed body is disposed on the power output end of the drive device, and the rocking bed body and the drive device are fixedly connected by a flange structure. The gas outlet end of the gas distribution device is sealed to the gas inlet interface of the rocking bed body. The detection end of the test control device extends into the interior of the rocking bed body, and the control end of the test control device is electrically connected to the drive device and the gas distribution device respectively.

[0007] Preferably, the main body of the rocking bed includes a quartz glass reaction chamber, a top transparent optical window, an air inlet, an air outlet, a temperature sensor interface, a reaction chamber support, and a thermal insulation structure. The quartz glass reaction chamber is a horizontally placed cylindrical structure with a flat bottom and a length-to-diameter ratio of 1:1.2 to 1:2. The top transparent optical window is sealed to the top opening of the quartz glass reaction chamber via a sealing ring. The air inlet is located on the bottom side wall of the quartz glass reaction chamber, and the air outlet is located on the top side wall. The temperature sensor interfaces are evenly distributed on the side walls of the quartz glass reaction chamber and communicate with the interior of the quartz glass reaction chamber. The reaction chamber support is fixed to the outer side wall of the quartz glass reaction chamber, and the thermal insulation structure completely covers the outer side of the quartz glass reaction chamber and the reaction chamber support.

[0008] Preferably, the drive device includes a servo motor, an eccentric linkage mechanism, a cam system, an angle control device, and a buffer limit device. The output shaft of the servo motor is fixedly connected to one end of the eccentric linkage mechanism, and the other end of the eccentric linkage mechanism is hinged to the power input end of the cam system. The power output end of the cam system is fixedly connected to the reaction chamber support of the rocking bed body. The angle control device is electrically connected to the servo motor, and the buffer limit devices are symmetrically arranged on both sides of the cam system.

[0009] Preferably, the gas distribution device includes at least three mass flow controllers, a gas path switching valve, a gas mixing chamber, and a gas distribution plate. The outlet of the mass flow controller is connected to the inlet of the gas path switching valve, the outlet of the gas path switching valve is connected to the inlet of the gas mixing chamber, the outlet of the gas mixing chamber is sealed to the inlet interface of the rocking bed body, and the gas distribution plate is fixed to the bottom inner side of the quartz glass reaction chamber.

[0010] Preferably, the test control device includes a K-type thermocouple array, a pressure sensor, a quadrupole mass spectrometer, a rotary encoder, a slip ring transmission module, a data acquisition module, and a PLC controller. The K-type thermocouple array extends into the quartz glass reaction chamber through the temperature sensor interface. The signal output end of the K-type thermocouple array is electrically connected to the signal input end of the data acquisition module through the slip ring transmission module. The detection end of the pressure sensor is connected to the interior of the quartz glass reaction chamber, and the signal output end of the pressure sensor is electrically connected to the data acquisition module. The detection end of the quadrupole mass spectrometer is sealed to the air outlet of the rocking bed body. The detection end of the rotary encoder is connected to the cam system of the drive device. The signal output end of the data acquisition module is electrically connected to the signal input end of the PLC controller. The control end of the PLC controller is electrically connected to the servo motor of the drive device and the flow controller of the gas distribution device, respectively.

[0011] Preferably, the test control device further includes an over-temperature alarm module, an angle limit protection module, and a combustible gas leak alarm module. The over-temperature alarm module is electrically connected to a K-type thermocouple array, the angle limit protection module is electrically connected to a rotary encoder, and the detection end of the combustible gas leak alarm module is connected to the gas outlet of the rocking bed body.

[0012] Preferably, the air distribution plate has a hole diameter of 0.4mm and is connected to the air inlet.

[0013] Preferably, the control terminals of the over-temperature alarm module, the angle limit protection module, and the combustible gas leak alarm module are all electrically connected to the PLC controller.

[0014] Therefore, the present invention adopts the above-mentioned high-efficiency particle mixing swing bed reactor based on z-axis simple harmonic swing motion, which includes a swing bed body, gas distribution, driving, and testing and control devices. It achieves fluidization without carrier gas, improves bed temperature uniformity and photothermal efficiency, increases methane conversion rate, and enables solar energy to drive thermochemical reactions.

[0015] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an efficient particle blending rocking bed reactor based on z-axis simple harmonic rocking motion according to the present invention. Figure 2 This is a schematic diagram of the main body of the swing bed in a high-efficiency particle blending swing bed reactor based on z-axis simple harmonic swing motion according to the present invention. Figure 3 This is a schematic diagram of the configuration device of a high-efficiency particle blending rocking bed reactor based on z-axis simple harmonic rocking motion according to the present invention. Figure 4 This is a schematic diagram of the drive device for a high-efficiency particle blending rocking bed reactor based on z-axis simple harmonic rocking motion according to the present invention. Figure 5 This is a system block diagram of a test and control device for a high-efficiency particle blending rocking bed reactor based on z-axis simple harmonic rocking motion according to the present invention.

[0017] Figure Labels 1. Shaking bed main body; 11. Quartz glass reaction chamber; 12. Top transparent optical window; 13. Air inlet; 14. Air outlet; 15. Temperature sensor interface; 16. Reaction chamber support; 17. Thermal insulation structure; 2. Gas distribution device; 21. Flow controller; 22. Gas path switching valve; 23. Gas mixing chamber; 24. Gas distribution plate; 3. Drive device; 31. Servo motor; 32. Eccentric linkage mechanism; 33. Cam system; 34. Angle control device; 35. Buffer limit device; 4. Test control device. Detailed Implementation

[0018] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0020] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] Example 1 like Figures 1-5 As shown, the present invention discloses a high-efficiency particle blending swing bed reactor based on z-axis simple harmonic swing motion, comprising a swing bed body 1, a gas distribution device 2, a driving device 3, and a test control device 4. The swing bed body 1 is disposed above the power output end of the driving device 3 and can realize periodic simple harmonic swing motion around the vertical direction (z-axis) to promote the efficient blending of solid particles inside the reactor.

[0022] The main body 1 of the shaking bed and the drive unit 3 are fixedly connected by a flange structure. The outlet end of the gas distribution device 2 is sealed to the inlet port of the main body 1 of the shaking bed, and is used to deliver a preset proportion of reaction gas into the main body of the shaking bed. The gas distribution device 2 is used to provide a reaction atmosphere composed of high-purity gas into the reactor. The detection end of the test control device 4 extends into the interior of the main body of the shaking bed, and the control end of the test control device 4 is electrically connected to the drive unit 2 and the gas distribution device 3 respectively. It is used to collect operating parameters and realize linkage control.

[0023] The main body 1 of the oscillating bed includes a quartz glass reaction chamber 11, a top transparent optical window 12, an air inlet 13, an air outlet 14, a temperature sensor interface 15, a reaction chamber support 16, and a heat insulation structure 17. The quartz glass reaction chamber 11 is a horizontally placed cylindrical structure with a flat bottom. The length-to-diameter ratio of the quartz glass reaction chamber 11 is 1:1.2 to 1:2. It is made of grade III quartz material, which has good heat resistance and optical transmittance, which is conducive to the formation of lateral sliding disturbance of particles during the oscillation process.

[0024] The top transparent optical window 12 is sealed to the top opening of the quartz glass reaction chamber 11 by a sealing ring, and its maximum optical transmittance is not less than 92%; the air inlet 13 is located on the bottom side wall of the quartz glass reaction chamber 11, and the air outlet 14 is located on the top side wall of the quartz glass reaction chamber 11; the temperature sensor interfaces 15 are evenly distributed on the side wall of the quartz glass reaction chamber 11 and communicate with the interior of the quartz glass reaction chamber 11; the reaction chamber support 16 is fixed to the outer side wall of the quartz glass reaction chamber 11 for connection with the drive device; the heat insulation structure 17 completely covers the outside of the quartz glass reaction chamber 11 and the reaction chamber support 16.

[0025] The drive unit 3 includes a servo motor 31, an eccentric linkage mechanism 32, a cam system 33, an angle control device 34, and a buffer limit device 35. The output shaft of the servo motor 31 is fixedly connected to one end of the eccentric linkage mechanism 32, and the other end of the eccentric linkage mechanism 32 is hinged to the power input end of the cam system 33. The power output end of the cam system 33 is fixedly connected to the reaction chamber support 16 of the rocking bed body 1, which is used to drive the rocking bed body to perform periodic simple harmonic rocking motion around the vertical z-axis. The angle control device 34 is electrically connected to the servo motor 31 and is used to adjust the rocking amplitude of the rocking bed body. Its adjustment range is ±45°, and the rocking angle is greater than the particle repose angle by 10–15°. The buffer limit device 35 is symmetrically arranged on both sides of the cam system 33, corresponding to the swing trajectory of the reaction chamber support 16. The frequency of the servo motor 31 is adjustable in the range of 0.1–1Hz.

[0026] The gas distribution device 2 includes at least three mass flow controllers 21, a gas path switching valve 22, a gas mixing chamber 23, and a gas distribution plate 24. The outlet of the mass flow controllers 21 is connected to the inlet of the gas path switching valve 22 to independently control the flow rates of high-purity methane, carbon dioxide, and argon. The outlet of the gas path switching valve 22 is connected to the inlet of the gas mixing chamber 23 to achieve uniform mixing of multiple gases. The outlet of the gas mixing chamber 23 is sealed to the inlet port 13 of the shaking bed body 1. The gas distribution plate 24 is fixed to the bottom inner side of the quartz glass reaction chamber 11. The gas distribution plate 24 has a 0.4mm aperture and is uniformly distributed in a 3×10 array. The gas distribution plate 24 is connected to the inlet port 13 to allow the mixed gas to penetrate the particle bed from bottom to top.

[0027] The test control device 4 includes a K-type thermocouple array, a pressure sensor, a quadrupole mass spectrometer, a rotary encoder, a slip ring transmission module, a data acquisition module, and a PLC controller. The test control device 4 is used to collect operating parameters such as temperature and pressure and realize linkage control. The K-type thermocouple array extends into the quartz glass reaction chamber 11 through the temperature sensor interface 15. The signal output end of the K-type thermocouple array is electrically connected to the signal input end of the data acquisition module through the slip ring transmission module. The detection end of the pressure sensor 42 is connected to the interior of the quartz glass reaction chamber 11. The signal output end of the pressure sensor 42 is electrically connected to the data acquisition module. The detection end of the quadrupole mass spectrometer is sealed to the gas outlet interface of the rocking bed body and is used to detect the gas components after the reaction. The detection end of the rotary encoder is connected to the cam system 33 of the drive device and is used to collect rocking angle data. The signal output end of the data acquisition module is electrically connected to the signal input end of the PLC controller. The control end of the PLC controller is electrically connected to the servo motor 31 of the drive device 3 and the flow controller 21 of the gas distribution device 2, respectively. The control terminals of the over-temperature alarm module, the angle limit protection module, and the combustible gas leak alarm module are all electrically connected to the PLC controller.

[0028] The test control device 4 also includes an over-temperature alarm module, an angle limit protection module, and a combustible gas leak alarm module. The over-temperature alarm module is electrically connected to a K-type thermocouple array, the angle limit protection module is electrically connected to a rotary encoder, and the detection end of the combustible gas leak alarm module is connected to the gas outlet of the rocking bed body. When the detection parameters exceed the preset threshold, the PLC controller automatically cuts off the gas supply and power.

[0029] Therefore, the present invention adopts the above-mentioned high-efficiency particle mixing swing bed reactor based on z-axis simple harmonic swing motion, which includes a swing bed body, gas distribution, driving, and testing and control devices. It achieves fluidization without carrier gas, improves bed temperature uniformity and photothermal efficiency, and increases methane conversion rate.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A high-efficiency particle blending rocking bed reactor based on z-axis simple harmonic rocking motion, characterized in that, It includes a rocking bed body, an air distribution device, a drive device, and a test control device. The rocking bed body is mounted on the power output end of the drive device. The rocking bed body and the drive device are fixedly connected by a flange structure. The air outlet end of the air distribution device is sealed to the air inlet of the rocking bed body. The detection end of the test control device extends into the rocking bed body. The control end of the test control device is electrically connected to the drive device and the air distribution device, respectively.

2. A high-efficiency particle blending rocking bed reactor based on z-axis simple harmonic rocking motion according to claim 1, characterized in that, The main body of the rocking bed includes a quartz glass reaction chamber, a top transparent optical window, an air inlet, an air outlet, a temperature sensor interface, a reaction chamber support, and a thermal insulation structure. The quartz glass reaction chamber is a horizontally placed cylindrical structure with a flat bottom design. The length-to-diameter ratio of the quartz glass reaction chamber is 1:1.2 to 1:

2. The top transparent optical window is sealed to the top opening of the quartz glass reaction chamber via a sealing ring. The air inlet is located on the bottom side wall of the quartz glass reaction chamber, and the air outlet is located on the top side wall of the quartz glass reaction chamber. Temperature sensor interfaces are evenly distributed on the side wall of the quartz glass reaction chamber and communicate with the interior of the quartz glass reaction chamber. The reaction chamber support is fixed to the outer side wall of the quartz glass reaction chamber, and the insulation structure completely covers the outside of the quartz glass reaction chamber and the reaction chamber support.

3. A high-efficiency particle blending rocking bed reactor based on z-axis simple harmonic rocking motion according to claim 1, characterized in that, The drive unit includes a servo motor, an eccentric linkage mechanism, a cam system, an angle control device, and a buffer limit device. The output shaft of the servo motor is fixedly connected to one end of the eccentric linkage mechanism, and the other end of the eccentric linkage mechanism is hinged to the power input end of the cam system. The power output end of the cam system is fixedly connected to the reaction chamber support of the rocking bed body. The angle control device is electrically connected to the servo motor, and the buffer limit devices are symmetrically arranged on both sides of the cam system.

4. A high-efficiency particle blending rocking bed reactor based on z-axis simple harmonic rocking motion according to claim 1, characterized in that, The gas distribution device includes at least three mass flow controllers, a gas path switching valve, a gas mixing chamber, and a gas distribution plate. The outlet of the mass flow controller is connected to the inlet of the gas path switching valve, the outlet of the gas path switching valve is connected to the inlet of the gas mixing chamber, the outlet of the gas mixing chamber is sealed to the inlet interface of the rocking bed body, and the gas distribution plate is fixed to the bottom inner side of the quartz glass reaction chamber.

5. A high-efficiency particle blending rocking bed reactor based on z-axis simple harmonic rocking motion according to claim 1, characterized in that, The test control device includes a K-type thermocouple array, a pressure sensor, a quadrupole mass spectrometer, a rotary encoder, a slip ring transmission module, a data acquisition module, and a PLC controller. The K-type thermocouple array extends into the quartz glass reaction chamber through the temperature sensor interface. The signal output end of the K-type thermocouple array is electrically connected to the signal input end of the data acquisition module through the slip ring transmission module. The detection end of the pressure sensor is connected to the interior of the quartz glass reaction chamber, and its signal output end is electrically connected to the data acquisition module. The detection end of the quadrupole mass spectrometer is sealed to the air outlet of the rocking bed body. The detection end of the rotary encoder is connected to the cam system of the drive device. The signal output end of the data acquisition module is electrically connected to the signal input end of the PLC controller. The control end of the PLC controller is electrically connected to the servo motor of the drive device and the flow controller of the gas distribution device, respectively.

6. A high-efficiency particle blending rocking bed reactor based on z-axis simple harmonic rocking motion according to claim 1, characterized in that, The test control device also includes an over-temperature alarm module, an angle limit protection module, and a combustible gas leak alarm module. The over-temperature alarm module is electrically connected to a K-type thermocouple array, the angle limit protection module is electrically connected to a rotary encoder, and the detection end of the combustible gas leak alarm module is connected to the gas outlet of the rocking bed body.

7. A high-efficiency particle blending rocking bed reactor based on z-axis simple harmonic rocking motion according to claim 4, characterized in that, The air distribution plate has a hole diameter of 0.4mm and is connected to the air intake interface.

8. A high-efficiency particle blending rocking bed reactor based on z-axis simple harmonic rocking motion according to claim 6, characterized in that, The control terminals of the over-temperature alarm module, the angle limit protection module, and the combustible gas leak alarm module are all electrically connected to the PLC controller.

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