CN-121972095-A - Efficient particle blending rocking bed reactor based on z-axis simple harmonic rocking motion

CN121972095ACN 121972095 ACN121972095 ACN 121972095ACN-121972095-A

Abstract

The invention discloses a high-efficiency particle blending rocking bed reactor based on z-axis simple harmonic rocking motion, which relates to the field of solar driven thermochemical reaction, and comprises a rocking bed main body, a gas distribution device, a driving device and a test control device, wherein the rocking bed main body is arranged on a power output end of the driving device, 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 in sealing connection with the air inlet interface of the rocking bed main body, the detection end of the test control device stretches into the rocking bed main body, and the control end of the test control device is respectively and electrically connected with the driving device and the air distribution device. The invention adopts the high-efficiency particle blending rocking bed reactor based on the z-axis simple harmonic rocking motion, comprises four devices of a rocking bed main body, gas distribution, driving and test control, realizes quasi-fluidization without carrier gas, improves the temperature uniformity and the photo-thermal efficiency of a bed layer, improves the methane conversion rate and drives the thermochemical reaction by solar energy.

Inventors

Teng liang
ZHANG XINYU
SONG JINGHAO
WANG YANG

Assignees

南京航空航天大学

Dates

Publication Date: 20260505
Application Date: 20260303

Claims (8)

1. The utility model provides a high-efficient granule blending rocking bed reactor based on z-axis simple harmonic rocking motion, a serial communication port, including rocking bed main part, distribution device, drive arrangement and test control device, the rocking bed main part sets up on drive arrangement's power take off end, rocking bed main part and drive arrangement pass through flange structure fixed connection, distribution device's end of giving vent to anger and the interface sealing connection that admits air of rocking bed main part, test control device's detection end stretches into inside the rocking bed main part, test control device's control end is connected with drive arrangement, distribution device electricity respectively.
2. The efficient particle blending rocking bed reactor based on the z-axis simple harmonic rocking motion is characterized in that a rocking bed main body comprises a quartz glass reaction cavity, a top transparent optical window, an air inlet interface, an air outlet interface, a temperature sensor interface, a reaction cavity support and a heat insulation structure, wherein the quartz glass reaction cavity is of a horizontally placed cylindrical structure, the bottom of the quartz glass reaction cavity is of a flat bottom design, the length-diameter ratio of the quartz glass reaction cavity is 1:1.2-1:2, the top transparent optical window is in sealing connection with a top opening of the quartz glass reaction cavity through a sealing ring, the air inlet interface is arranged on a bottom side wall of the quartz glass reaction cavity, the air outlet interface is arranged on a top side wall of the quartz glass reaction cavity, the temperature sensor interface is uniformly distributed on the side wall of the quartz glass reaction cavity and is communicated with the inside of the quartz glass reaction cavity, the reaction cavity support is fixed on the outer side wall of the quartz glass reaction cavity, and the heat insulation structure is completely coated on the outer sides of the quartz glass reaction cavity and the reaction cavity support.
3. The efficient particle blending rocking bed reactor based on the z-axis simple harmonic rocking motion, which is characterized in that the driving device comprises a servo motor, an eccentric connecting rod mechanism, a cam system, an angle control device and a buffering limiting device, wherein an output shaft of the servo motor is fixedly connected with one end of the eccentric connecting rod mechanism, the other end of the eccentric connecting rod mechanism is hinged with a power input end of the cam system, a power output end of the cam system is fixedly connected with a reaction cavity bracket of a rocking bed main body, the angle control device is electrically connected with the servo motor, and the buffering limiting device is symmetrically arranged on two sides of the cam system.
4. The efficient particle blending rocking bed reactor based on the z-axis simple harmonic rocking motion, which is characterized in that the gas distribution device comprises at least three mass flow controllers, a gas path switching valve, a gas mixing cavity and a gas distribution plate, wherein the gas outlet ends of the mass flow controllers are respectively communicated with the gas inlet ends of the gas path switching valve, the gas outlet ends of the gas path switching valve are communicated with the gas inlet ends of the gas mixing cavity, the gas outlet ends of the gas mixing cavity are in sealing connection with a gas inlet interface of the rocking bed main body, and the gas distribution plate is fixed on the inner side of the bottom of the quartz glass reaction cavity.
5. The high-efficiency particle blending rocking bed reactor based on the z-axis simple harmonic rocking motion is characterized in that the test control device comprises 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 (programmable logic controller), the K-type thermocouple array penetrates through a temperature sensor interface to stretch into a quartz glass reaction cavity, a signal output end of the K-type thermocouple array is electrically connected with a signal input end of the data acquisition module through the slip ring transmission module, a detection end of the pressure sensor is communicated with the interior of the quartz glass reaction cavity, a signal output end of the pressure sensor is electrically connected with the data acquisition module, a detection end of the quadrupole mass spectrometer is in sealing connection with an air outlet interface of a rocking bed main body, a detection end of the rotary encoder is connected with a cam system of a driving device, a signal output end of the data acquisition module is electrically connected with a signal input end of the PLC, and control ends of the PLC are respectively electrically connected with a servo motor of the driving device and a flow controller of an air distribution device.
6. The high-efficiency particle blending rocking bed reactor based on z-axis simple harmonic rocking motion of claim 1, wherein the test control device further comprises an over-temperature alarm module, an angle limit protection module and a combustible gas leakage alarm module, wherein the over-temperature alarm module is electrically connected with the K-type thermocouple array, the angle limit protection module is electrically connected with the rotary encoder, and the detection end of the combustible gas leakage alarm module is communicated with the air outlet interface of the rocking bed main body.
7. The efficient particle blending rocking bed reactor based on the z-axis simple harmonic rocking motion, according to claim 4, is characterized in that the aperture of the air distribution plate is 0.4mm, and the air distribution plate is communicated with the air inlet interface.
8. The high-efficiency particle blending rocking bed reactor based on the z-axis simple harmonic rocking motion, which is characterized in that the control ends of the over-temperature alarm module, the angle limit protection module and the combustible gas leakage alarm module are electrically connected with a PLC.

Description

Efficient particle blending rocking bed reactor based on z-axis simple harmonic rocking motion Technical Field The invention relates to the technical field of thermochemical reaction driven by solar energy, in particular to a high-efficiency particle blending rocking bed reactor based on z-axis simple harmonic rocking motion. Background Under the drive of a solar concentrating system, as the light spots show Gaussian distribution characteristics and the radiation transmission follows the beer-lambert law, a traditional stacked reaction bed can have obvious hot spot areas, so that uneven reaction rate and even material sintering failure are caused. For solar driven thermochemical reaction processes, especially in typical reactions such as CO 2 capture, methane dry reforming, pyrolysis synthesis, etc., bed temperature uniformity and particulate mixing state have a decisive impact on conversion efficiency. At present, fluidized bed reactors are widely used as mainstream mixing type devices for improving the heat/mass diffusion rate by blowing solid particles away from the bed bottom by means of high-velocity gas, and performing high-frequency collision and movement in a suspended state to achieve high heat transfer and high reaction efficiency. However, the fluidized bed has some defects in application that, on one hand, high-flow-rate carrier gas needs to be continuously supplied, so that the residence time of the reaction gas is short and the conversion rate is limited, and on the other hand, a large amount of unreacted gas escapes to cause raw material waste, and meanwhile, the carrier gas penetrating through the bed layer can carry a large amount of heat to leave the system, so that the energy consumption is remarkable. In addition, the reaction gas quantity is limited by fluidization conditions, and the process window is narrow, so that independent adjustment of thermochemical reaction parameters is not facilitated. Disclosure of Invention The invention aims to provide a high-efficiency particle blending rocking bed reactor based on z-axis simple harmonic rocking motion, which comprises a rocking bed main body, four devices of gas distribution, driving and test control, realizes quasi-fluidization without carrier gas, improves the temperature uniformity and photo-thermal efficiency of a bed layer, improves the methane conversion rate and drives a thermochemical reaction by solar energy. The invention provides a high-efficiency particle blending rocking bed reactor based on z-axis simple harmonic rocking motion, which comprises a rocking bed main body, a gas distribution device, a driving device and a test control device, wherein the rocking bed main body is arranged on a power output end of the driving device, the rocking bed main body and the driving device are fixedly connected through a flange structure, a gas outlet end of the gas distribution device is in sealing connection with a gas inlet interface of the rocking bed main body, a detection end of the test control device extends into the rocking bed main body, and a control end of the test control device is respectively and electrically connected with the driving device and the gas distribution device. Preferably, the rocking bed main body comprises a quartz glass reaction cavity, a top transparent optical window, an air inlet interface, an air outlet interface, a temperature sensor interface, a reaction cavity bracket and a heat insulation structure, wherein the quartz glass reaction cavity is of a horizontally placed cylindrical structure, the bottom of the quartz glass reaction cavity is of a flat bottom design, the length-diameter ratio of the quartz glass reaction cavity is 1:1.2-1:2, the top transparent optical window is in sealing connection with a top opening of the quartz glass reaction cavity through a sealing ring, the air inlet interface is arranged on the bottom side wall of the quartz glass reaction cavity, the air outlet interface is arranged on the top side wall of the quartz glass reaction cavity, the temperature sensor interface is uniformly distributed on the side wall of the quartz glass reaction cavity and is communicated with the inside of the quartz glass reaction cavity, the reaction cavity bracket is fixed on the outer side wall of the quartz glass reaction cavity, and the heat insulation structure is completely coated on the outer sides of the quartz glass reaction cavity and the reaction cavity bracket. Preferably, the driving device comprises a servo motor, an eccentric connecting rod mechanism, a cam system, an angle control device and a buffering limiting device, wherein an output shaft of the servo motor is fixedly connected with one end of the eccentric connecting rod mechanism, the other end of the eccentric connecting rod mechanism is hinged with a power input end of the cam system, a power output end of the cam system is fixedly connected with a reaction cavity bracket of the swinging bed main body, the angle contr