Catalytic jet stirring reactor suitable for gas-solid two-phase catalytic reaction

Abstract

The invention discloses a catalytic jet stirring reactor suitable for gas-solid two-phase catalytic reaction, which comprises a reactor shell, a gas inlet pipe, a cross-shaped nozzle, a catalyst positioning platform, a clamping sealing rubber ring, a sampling pipe and a sampling probe, the gas inlet pipe is connected to the top end of the reactor shell and partially extends into the reactor shell; the cross-shaped nozzle is connected to the bottom end of the air inlet pipe, the catalyst positioning platform extends into the reactor shell from bottom to top, the catalyst positioning platform and the reactor shell are in sealed connection through a clamping sealing rubber ring, a sampling pipe at the central position of the catalyst positioning platform is communicated with the top of the reactor shell, and the bottom end of the sampling pipe is closed; and the sampling probe hermetically penetrates into the sampling tube of the catalyst positioning platform from the bottom end of the sampling tube. The device is of a detachable structure, and research on the surface and interface reaction mechanism in the gas-solid two-phase catalytic reaction process in an approximate zero-dimensional environment is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of catalytic reaction equipment, in particular to a catalytic jet stirring reactor suitable for gas-solid two-phase catalytic reaction. BACKGROUND

[0002] Gas-solid two-phase catalytic reaction widely exists in key fields such as energy catalysis, material synthesis and environmental governance, and its surface interface micro-kinetics directly determines the reaction efficiency and product selectivity. However, the existing research means is limited by the dynamic complexity of gas-solid interface and the technical bottleneck of microscale observation, and it is difficult to capture and analyze the near-surface interface intermediate product in the reaction process.

[0003] In order to more clearly study the chemical reaction mechanism, it is necessary to decouple the physical process and chemical process in the chemical reaction flow. Jet stirring reactor (JSR) can do this. JSR is a spherical reactor that uses four nozzles distributed in the center of the sphere to form turbulence to achieve "zero-dimensional" state inside the sphere, so that the temperature, velocity and concentration field inside the reactor are approximately uniform, providing an ideal and uniform reaction environment, so that sampling is not limited by space, and reaction is only regulated by molecular dynamics, which is beneficial to sampling analysis and reaction mechanism research, but this reactor is only suitable for single-phase reaction. Flow tube reaction device can be used to study heterogeneous reaction. Its core principle is based on steady flow and mass transfer-reaction coupling. By adjusting flow rate, temperature, pressure and other parameters, the actual reaction environment is simulated and kinetic data is obtained. However, the flow tube has the following disadvantages: it cannot directly observe the surface bonding state, the fixed bed filling may cause local mass transfer unevenness, and it is difficult to reveal the micro-chemical reaction mechanism. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a catalytic jet stirring reactor suitable for gas-solid two-phase catalytic reaction, which realizes the research of gas-solid two-phase catalytic reaction process surface interface reaction mechanism in an approximately zero-dimensional environment.

[0005] The technical solution of the present application is:

[0006] A catalytic jet stirring reactor suitable for gas-solid two-phase catalytic reaction, comprising a reactor shell, a gas inlet pipe, a cross-shaped nozzle, a catalyst positioning platform, a clamping sealing rubber ring, a sampling pipe and a sampling probe.

[0007] The reactor shell comprises a downward-opening hemispherical shell and a circular pipe, the circular pipe is connected to the bottom end of the hemispherical shell, the bottom of the gas inlet pipe extends from the top end of the hemispherical shell to the inside of the hemispherical shell, and the cross-shaped nozzle is connected to the bottom end of the gas inlet pipe.

[0008] The catalyst positioning platform comprises a sampling tube, an outer tube and an annular top plate, the top end of the sampling tube is an open structure, the bottom end is a closed structure, the top end and the bottom end of the outer tube are both open structures, the outer tube is sleeved on the outer periphery of the sampling tube, the inner ring of the annular top plate is fixedly connected with the top end of the sampling tube, and the outer ring of the annular top plate is fixedly connected with the top end of the outer tube, the catalyst positioning platform extends into the circular tube of the reactor shell, the clamping sealing rubber ring is clamped and connected between the outer wall of the outer tube of the catalyst positioning platform and the inner wall of the circular tube of the reactor shell, the axial positioning of the catalyst positioning platform and the reactor shell and the sealing between the two are realized, the annular top plate of the catalyst positioning platform is adjacent to the cross-shaped nozzle and located directly below the cross-shaped nozzle, a plurality of catalyst positioning grooves are arranged on the top surface of the annular top plate, and the catalyst positioning grooves are used for placing the sheet-shaped catalyst.

[0009] The top end of the sampling probe is an inlet end, and the bottom end is an outlet end, the sampling probe extends upward into the sampling tube from the bottom end of the sampling tube, and the bottom of the sampling probe is located outside the sampling tube.

[0010] The circular tube of the reactor shell is provided with an annular limiting boss on the inner wall of the top portion, and the top surface of the catalyst positioning platform is in close contact with the annular bottom surface of the limiting boss to realize the positioning of the catalyst positioning platform.

[0011] The plurality of catalyst positioning grooves are uniformly distributed along the circumference of the annular top plate.

[0012] The top surface of the catalyst positioning platform is placed with a catalyst cover plate in an annular plate structure, the inner ring of the catalyst cover plate completely overlaps the inner ring of the annular top plate of the catalyst positioning platform, a plurality of through holes are arranged on the catalyst cover plate, each through hole is located directly above a corresponding catalyst positioning groove and is a concentric circle, and the hole diameter of each through hole is smaller than the inner diameter of the catalyst positioning groove.

[0013] The bottom portion of the gas inlet tube is provided with a first thermocouple, the first thermocouple is used for collecting the temperature at the central position of the region above the top surface of the catalyst positioning platform in the reaction zone, i.e., the reactor shell, a second thermocouple is arranged in the sampling tube, and the second thermocouple is used for collecting the temperature of the outlet of the reaction zone at the top of the sampling tube, i.e., the top surface of the catalyst positioning platform.

[0014] The first thermocouple sleeve is integrally connected with the air inlet pipe, the second thermocouple sleeve is integrally connected with the sampling pipe, the bottom end of the first thermocouple sleeve is closed, and the top end is an open structure, the first thermocouple extends into the first thermocouple sleeve from the top end of the first thermocouple sleeve, the probe at the bottom end of the first thermocouple extends to the center of the reaction zone, the top end of the second thermocouple sleeve is closed, and the bottom end is an open structure, the second thermocouple extends into the second thermocouple sleeve from the bottom end of the second thermocouple sleeve, and the probe at the bottom end of the second thermocouple extends to the top of the sampling pipe.

[0015] The part of the reactor shell above the top surface of the catalyst positioning platform is located in the heating zone of the heating furnace, the periphery of the heating zone in the heating furnace is provided with a heat preservation layer, the bottom of the reactor shell and the bottom of the catalyst positioning platform are both extended from the bottom end of the heat preservation layer of the heating furnace, the clamping sealing rubber ring is located between the bottom of the reactor shell and the bottom of the catalyst positioning platform, that is, outside the heat preservation layer of the heating furnace, and the outer periphery of the bottom of the reactor shell is provided with two radial symmetric heat dissipation fans which are directed to the clamping sealing rubber ring.

[0016] The part of the air inlet pipe extended to the outside of the reactor shell and the tail of the sampling probe connected with the analysis instrument are both wound with heating belts, the heating belt on the air inlet pipe is used for preheating the gas to be reacted, and the heating belt on the sampling probe avoids condensation of the gas product after reaction.

[0017] The air inlet pipe and the reactor shell are integrally connected, the top end of the air inlet pipe is a closed structure, the side wall of the top of the air inlet pipe is provided with an air inlet connected with a gas cylinder, the bottom end of the sampling pipe is lower than the bottom end of the outer pipe, that is, the bottom of the sampling pipe is located outside the outer pipe, the bottom of the sampling pipe is provided with a through hole for the sampling probe to extend into, the upper support and the lower support are respectively arranged on the top end and the bottom end of the heating furnace, the upper support and the lower support both include vertical guide rods, horizontal limiting plates and fixed clamping blocks, the vertical guide rods are screw structures fixedly connected to the top end and the bottom end of the heating furnace, two locking nuts are arranged on the vertical guide rods, the edges of the horizontal limiting plates are provided with through holes, the horizontal limiting plates are slidably connected to the vertical guide rods through the through holes, the two locking nuts are respectively located below and above the through holes of the horizontal limiting plates, the fixed clamping block of the upper support is fixedly connected to the bottom surface of the horizontal limiting plate, the fixed clamping block of the lower support is fixedly connected to the top surface of the horizontal limiting plate, the bottom surface of the fixed clamping block of the upper support and the top surface of the fixed clamping block of the lower support are both provided with clamping grooves, the top end of the air inlet pipe extends into and is clamped in the clamping groove of the fixed clamping block of the upper support, and the bottom end of the sampling pipe extends into and is clamped in the clamping groove of the fixed clamping block of the lower support, and the horizontal limiting plates on the upper support and the lower support are horizontally locked and positioned through the corresponding two locking nuts, so that the catalytic jet stirring reactor is connected to the heating furnace.

[0018] The tail gas exhaust is arranged on the side wall of the bottom of the sampling tube.

[0019] The present application has the following advantages:

[0020] (1), the catalyst positioning platform and the reactor shell of the present application are detachable structures, and the sheet-shaped catalyst positioning is arranged on the catalyst positioning platform, which is used to realize the gas-solid two-phase catalytic reaction, after the reaction, the catalyst positioning platform is taken out from the reactor shell, the carbon deposition on the surface of the sheet-shaped catalyst can be directly observed and cleaned, so that the treatment of the carbon deposition in the catalytic reaction is more convenient and fast, and the observation of the properties of the reaction carbon deposition and the research on the surface phase reaction mechanism are facilitated.

[0021] (2), the catalyst positioning platform and the reactor shell of the present application are sealed and connected through the clamping sealing rubber ring, compared with the sealing method of the quartz reactor by smearing vaseline on the ground glass, the sealing method is more reliable and convenient, and the cooling fan is additionally installed on the outer periphery of the clamping sealing rubber ring to prevent the clamping sealing rubber ring from melting during the reaction, and the clamping sealing rubber ring has low cost and is convenient to replace and use, so as to always ensure the sealing property between the catalyst positioning platform and the reactor shell.

[0022] (3), a plurality of catalyst positioning grooves are arranged on the catalyst positioning platform, and a catalyst cover plate is arranged on the catalyst positioning platform, the hole diameter of each through hole of the catalyst cover plate is smaller than the inner diameter of the catalyst positioning groove, so that the edge of the sheet-shaped catalyst is covered, and the sheet-shaped catalyst is ensured to be placed in the reaction zone and participate in the reaction.

[0023] (4), an annular limiting boss is arranged on the inner wall of the reactor shell, when the catalyst positioning platform is inserted into the reactor shell, the insertion depth of the catalyst positioning platform is limited, and the quantitative control of the volume and the residence time of the reaction zone is realized.

[0024] (5), a first thermocouple is arranged in the gas inlet pipe, and a second thermocouple is arranged in the sampling tube, the first thermocouple is used to collect the temperature at the center position of the reactor reaction zone, and the second thermocouple is used to collect the temperature at the outlet of the reaction zone, when the temperatures at the two positions are similar, it indicates that the gas distribution in the reaction zone is uniform, the gas components at each position are consistent, and the sampled gas can be considered as the intermediate product in the reaction, that is, by collecting the temperature, the progress of the reaction is determined, and the accuracy of the intermediate product sampling is improved; and by arranging the first thermocouple sleeve and the second thermocouple sleeve, the first thermocouple and the second thermocouple are always not in contact with the gas.

[0025] (6), the heating tape is wound on the part of the air inlet pipe extending outside the reactor shell and the tail of the sampling probe connected with the analysis instrument, the heating tape on the air inlet pipe is used for preheating the gas to be reacted, and the heating tape on the sampling probe avoids condensation of the gas product after reaction, so that the reaction and sampling are smoothly conducted.

[0026] (7), the catalytic jet stirring reactor is quickly connected to the heating furnace through the upper support and the lower support, so that the stability of the catalytic jet stirring reactor structure in the reaction and sampling process is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic diagram of the present application.

[0028] Figure 2 is a top view of the catalyst positioning platform of the present application.

[0029] Figure 3 is a partial structural schematic diagram of the catalyst positioning platform and the setting position of the catalyst cover plate of the present application.

[0030] Figure 4 is a structural schematic diagram of the present application connected to the heating furnace.

[0031] The drawings show that: 1 is the reactor shell, 2 is the air inlet pipe, 21 is the first thermocouple sleeve, 3 is the cross-shaped nozzle, 4 is the catalyst positioning platform, 41 is the sampling pipe, 42 is the outer pipe, 43 is the annular top plate, 44 is the catalyst positioning groove, 45 is the tail gas exhaust port, 46 is the second thermocouple sleeve, 5 is the catalyst cover plate, 51 is the through hole, 6 is the clamping sealing rubber ring, 7 is the cooling fan, 8 is the sampling probe, 9 is the first thermocouple, 10 is the second thermocouple, 11 is the heating tape, 12 is the limiting boss, 13 is the heat preservation layer, 14 is the heating furnace, 15 is the vertical guide rod, 16 is the horizontal limiting plate, and 17 is the fixed clamping block. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] See Figures 1-3 A catalytic jet stirring reactor suitable for gas-solid two-phase catalytic reaction, comprising a reactor shell 1, an air inlet pipe 2, a cross-shaped nozzle 3, a catalyst positioning platform 4, a catalyst cover plate 5, a clamping sealing rubber ring 6, a cooling fan 7, a sampling probe 8, a first thermocouple 9, a second thermocouple 10 and a heating tape 11.

[0034] The reactor shell 1 comprises a downward-opening hemispherical shell and a circular tube connected to the bottom end of the hemispherical shell, and an annular limiting boss 12 is arranged on the inner wall of the top of the circular tube. The bottom of the gas inlet pipe 2 extends from the top end of the hemispherical shell to the inside of the hemispherical shell, and the gas inlet pipe 2 is integrally connected to the reactor shell 1. The top end of the gas inlet pipe 2 is a closed structure, and the sidewall of the top of the gas inlet pipe 2 is provided with a gas inlet connected to a gas cylinder. The cross-shaped nozzle 3 is connected to the bottom end of the gas inlet pipe 2.

[0035] The catalyst positioning platform 4 comprises a sampling pipe 41, an outer pipe 42, and an annular top plate 43. The top end of the sampling pipe 41 is an open structure, and the bottom end is a closed structure. The top end and the bottom end of the outer pipe 42 are both open structures. The outer pipe 42 is sleeved on the outer periphery of the sampling pipe 41. The inner circle of the annular top plate 43 is fixedly connected to the top end of the sampling pipe 41, and the outer circle of the annular top plate 43 is fixedly connected to the top end of the outer pipe 42. The horizontal height of the bottom end of the sampling pipe 41 is lower than that of the bottom end of the outer pipe 42, that is, the bottom of the sampling pipe 41 is located outside the outer pipe 42. The sidewall of the bottom of the sampling pipe 41 is provided with a tail gas exhaust port 45. The top surface of the annular top plate 43 is provided with a plurality of catalyst positioning grooves 44, which are uniformly distributed along the circumference of the annular top plate 43. The catalyst positioning grooves 44 are used to place sheet-shaped catalysts. The annular top plate 43 is placed on the top surface of the annular top plate 43. The inner circle of the catalyst cover plate 5 completely overlaps the inner circle of the annular top plate 43. The catalyst cover plate 5 is provided with a plurality of through holes 51, and each through hole 51 is located directly above a corresponding catalyst positioning groove 44 and is a concentric circle. The diameter of each through hole 51 is smaller than the inner diameter of the catalyst positioning groove 44. The catalyst positioning platform 4 and the catalyst cover plate 5 are synchronously inserted into the circular tube of the reactor shell 1. The top surface of the catalyst cover plate 5 is in close contact with the annular bottom surface of the limiting boss 12, so that the annular top plate 43 is adjacent to and located directly below the cross-shaped nozzle 3, realizing the positioning of the catalyst positioning platform 4. The outer wall of the outer pipe 42 and the inner wall of the circular tube of the reactor shell 1 are clamped and sealed with a clamping sealing rubber ring 6, realizing the axial positioning and sealing between the catalyst positioning platform 4 and the reactor shell 1.

[0036] The part of the reactor shell 1 above the top surface of the catalyst positioning platform 4 is located in the heating zone of the heating furnace 14. The outer periphery of the heating zone in the heating furnace 14 is provided with a heat preservation layer 13. The bottom of the reactor shell 1 and the catalyst positioning platform 4 are both extended from the bottom end of the heating furnace heat preservation layer 13. The clamping sealing rubber ring 6 is positioned between the bottom of the reactor shell 1 and the catalyst positioning platform 4, that is, outside the heating furnace heat preservation layer 13. The outer periphery of the bottom of the reactor shell 1 is provided with two radially symmetrical heat dissipation fans 7 towards the clamping sealing rubber ring 6.

[0037] The top end of the sampling probe 8 is the inlet end and the bottom end is the outlet end. The bottom of the sampling tube 41 is provided with a through hole for the sampling probe to extend into. The sampling probe 8 extends upward from the through hole of the sampling tube 41 into the sampling tube 41. The bottom of the sampling probe 8 is located outside the sampling tube 41. The outlet for leading out the sampling probe 8 at the bottom of the sampling tube 41 is sealingly connected with the sampling probe 8. The sampling probe 8 draws the reaction products in the reaction zone inside the reactor shell 1 to the analysis instrument for analysis by a vacuum pump.

[0038] The first thermowell 21 is arranged in the gas inlet pipe 2, and the second thermowell 46 is arranged in the sampling tube 41. The gas inlet pipe 2 is integrally and plasticly connected with the first thermowell 21, and the sampling tube 41 is integrally and plasticly connected with the second thermowell 46. The bottom end of the first thermowell 21 is closed, and the top end is open. The first thermocouple 9 extends downward from the top end of the first thermowell 21 into the first thermowell 21. The probe at the bottom end of the first thermocouple 9 extends into the center position of the reaction zone (the region above the top surface of the catalyst positioning platform in the reactor shell). The temperature at the center position of the reaction zone is collected. The top end of the second thermowell 46 is closed, and the bottom end is open. The second thermocouple 10 extends upward from the bottom end of the second thermowell 46 into the second thermowell 46. The probe at the bottom end of the second thermocouple 10 extends into the top portion of the sampling tube 41. The temperature at the top portion of the sampling tube 41, i.e. the temperature at the outlet of the reaction zone on the top surface of the catalyst positioning platform is collected.

[0039] The heating tape 11 is wound on the portion of the gas inlet pipe 2 extending outside the reactor shell 1 and the tail portion of the sampling probe 8 connected with the analysis instrument. The heating tape 11 on the gas inlet pipe 2 is used for preheating the reaction gas, and the heating tape 11 on the sampling probe 8 avoids the condensation of the reaction gas products.

[0040] See Figure 4The upper support and the lower support are respectively arranged outside the heating furnace 14 and on the top end and the bottom end of the heating furnace 14, and each comprises a vertical guide rod 15, a horizontal limiting plate 16 and a fixed clamping block 17, the vertical guide rod 15 is a screw rod structure fixedly connected to the top end and the bottom end of the heating furnace 14, two locking nuts are arranged on the vertical guide rod 15, the horizontal limiting plate 16 is slidably connected to the vertical guide rod 15 through a through hole arranged at the edge of the horizontal limiting plate 16, the two locking nuts are respectively located below and above the through hole of the horizontal limiting plate 16, the fixed clamping block 17 of the upper support is fixedly connected to the bottom surface of the horizontal limiting plate 16, and the fixed clamping block 17 of the lower support is fixedly connected to the top surface of the horizontal limiting plate 16, the bottom surface of the fixed clamping block 17 of the upper support and the top surface of the fixed clamping block 17 of the lower support are each provided with a clamping groove, the top end of the gas inlet pipe 2 is inserted into and clamped in the clamping groove of the fixed clamping block 17 of the upper support, and the bottom end of the sampling pipe 41 is inserted into and clamped in the clamping groove of the fixed clamping block 17 of the lower support, and the horizontal limiting plate 16 on the upper support and the lower support is horizontally locked and positioned through the corresponding two locking nuts, so that the catalytic jet stirring reactor is connected to the heating furnace 14.

[0041] Working principle of the present application:

[0042] First, the heating belt 11 is wound on the gas inlet pipe 2 and the sampling probe 8, and then the catalyst powder is pressed into a sheet-shaped catalyst, the sheet-shaped catalyst is placed in the catalyst positioning groove 44 of the catalyst positioning platform 4, the catalyst cover plate 5 is covered, the clamping sealing rubber ring 6 is sleeved on the catalyst positioning platform 4, the catalyst positioning platform 4 and the catalyst cover plate 5 are synchronously inserted into the circular pipe of the reactor shell 1, the top surface of the catalyst cover plate 5 is in close contact with the annular bottom surface of the limiting boss 12, the clamping sealing rubber ring 6 is sealingly connected between the catalyst positioning platform 4 and the reactor shell 1, and then the reactor is connected and fixed to the heating furnace 14 through the upper support and the lower support; the gas circuit is connected, the gas enters the inside of the reactor shell 1 from the gas inlet pipe 2 after passing through the flow meter, is sprayed into the reaction zone (the region above the catalyst positioning platform 4 and the hemispherical cover) through the cross-shaped nozzle 3, is uniformly distributed in the reaction zone, and reacts under the catalytic action of the sheet-shaped catalyst at a certain temperature set by the heating furnace 14, when the temperatures collected by the first thermocouple 9 and the second thermocouple 10 are close, it is indicated that the gas in the reaction zone is uniformly distributed, the gas compositions at different positions are consistent, and the intermediate product is obtained by reaction, and the intermediate product after reaction enters the analysis instrument through the sampling probe 8 for analysis and research.

[0043] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A catalytic jet stirred reactor suitable for gas-solid two-phase catalytic reaction, characterized by: It includes a reactor shell, an air inlet pipe, a cross-shaped nozzle, a catalyst positioning platform, a clamping sealing rubber ring, a sampling tube and a sampling probe; The reactor shell includes a hemispherical cover with an opening facing downward and a circular tube, the circular tube is connected to the bottom end of the hemispherical cover, the bottom of the air inlet pipe extends from the top end of the hemispherical cover to the interior of the hemispherical cover, and the cross-shaped nozzle is connected to the bottom end of the air inlet pipe; The catalyst positioning platform includes a sampling tube, an outer tube and an annular top plate. The top end of the sampling tube is an open structure and the bottom end is a closed structure. The top and bottom ends of the outer tube are both open structures. The outer tube is sleeved on the outer circumference of the sampling tube. The inner ring of the annular top plate is fixedly connected to the top end of the sampling tube. The outer ring of the annular top plate is fixedly connected to the top end of the outer tube. The catalyst positioning platform extends into the circular tube of the reactor shell. A clamping sealing rubber ring is clamped between the outer wall of the outer tube of the catalyst positioning platform and the inner wall of the circular tube of the reactor shell to achieve axial limitation of the catalyst positioning platform and the seal between the two. The annular top plate of the catalyst positioning platform is adjacent to the cross-shaped nozzle and is located directly below the cross-shaped nozzle. A plurality of catalyst positioning grooves are provided on the top surface of the annular top plate. The catalyst positioning grooves are used to place sheet catalysts. The top end of the sampling probe is the inlet end, and the bottom end is the outlet end. The sampling probe extends upward from the bottom end of the sampling tube into the sampling tube, and the bottom of the sampling probe is located outside the sampling tube.

2. A catalytic jet stirred reactor suitable for gas-solid two-phase catalytic reaction according to claim 1, characterized in that: An annular limiting boss is provided on the inner wall of the top of the circular tube of the reactor shell, and the top surface of the catalyst positioning platform is in close contact with the annular bottom surface of the limiting boss to realize the positioning of the catalyst positioning platform.

3. A catalytic jet stirred reactor suitable for gas-solid two-phase catalytic reaction according to claim 1, characterized in that: The multiple catalyst positioning grooves are evenly distributed along the circumference of the annular top plate.

4. A catalytic jet stirred reactor suitable for gas-solid two-phase catalytic reaction according to claim 1, characterized in that: A catalyst cover plate with an annular plate structure is placed on the top surface of the catalyst positioning platform. The inner circle of the catalyst cover plate completely overlaps with the inner circle of the annular top plate of the catalyst positioning platform. A plurality of through holes are provided on the catalyst cover plate, and each through hole is located directly above a corresponding catalyst positioning groove and the two are concentric circles. The aperture of each through hole is smaller than the inner diameter of the catalyst positioning groove.

5. A catalytic jet stirred reactor suitable for gas-solid two-phase catalytic reaction according to claim 1, characterized in that: A first thermocouple is provided at the bottom of the air inlet pipe, and the first thermocouple is used to collect the temperature at the center position of the reaction zone, that is, the area above the top surface of the catalyst positioning platform in the reactor shell. A second thermocouple is provided in the sampling tube, and the second thermocouple is used to collect the temperature at the top of the sampling tube, that is, the top surface of the catalyst positioning platform, at the outlet of the reaction zone.

6. A catalytic jet stirred reactor suitable for gas-solid two-phase catalytic reaction according to claim 5, characterized in that: A first thermocouple sleeve is provided in the intake pipe, and a second thermocouple sleeve is provided in the sampling tube. The intake pipe and the first thermocouple sleeve are integrally connected, and the sampling tube and the second thermocouple sleeve are integrally connected. The bottom end of the first thermocouple sleeve is closed and the top end is an open structure. The first thermocouple extends downward from the top end of the first thermocouple sleeve into the first thermocouple sleeve, and the probe at the bottom end of the first thermocouple extends into the center position of the reaction zone. The top end of the second thermocouple sleeve is closed and the bottom end is an open structure. The second thermocouple extends upward from the bottom end of the second thermocouple sleeve into the second thermocouple sleeve, and the probe at the bottom end of the second thermocouple extends into the top of the sampling tube.

7. A catalytic jet stirred reactor suitable for gas-solid two-phase catalytic reaction according to claim 1, characterized in that: The part of the reactor shell located above the top surface of the catalyst positioning platform is located in the heating zone of the heating furnace. An insulation layer is provided on the periphery of the heating zone in the heating furnace. The bottom of the reactor shell and the catalyst positioning platform both extend from the bottom end of the insulation layer of the heating furnace. The clamping sealing rubber ring is positioned between the bottom of the reactor shell and the catalyst positioning platform, that is, located outside the insulation layer of the heating furnace. Two radially symmetrical cooling fans facing the clamping sealing rubber ring are provided on the outer periphery of the bottom of the reactor shell.

8. The catalytic jet stirred reactor suitable for gas-solid two-phase catalytic reaction according to claim 1, characterized in that: The part of the air inlet pipe extending to the outside of the reactor shell and the tail of the sampling probe connected to the analytical instrument are both wrapped with heating tapes. The heating tape on the air inlet pipe is used to preheat the reacted gas, and the heating tape on the sampling probe prevents condensation of the gas products after the reaction.

9. A catalytic jet stirred reactor suitable for gas-solid two-phase catalytic reaction according to claim 7, characterized in that: The air inlet pipe and the reactor shell are an integrated plastic connection structure, the top of the air inlet pipe is a closed structure, an air inlet connected to the gas cylinder is provided on the side wall of the top of the air inlet pipe, the horizontal height of the bottom end of the sampling tube is lower than the horizontal height of the bottom end of the outer tube, that is, the bottom of the sampling tube is located outside the outer tube, and a through hole for the sampling probe to extend into is provided at the bottom of the sampling tube. The upper bracket and the lower bracket are respectively provided on the outside of the heating furnace and on the top and bottom ends of the heating furnace. The upper bracket and the lower bracket both include a vertical guide rod, a horizontal limit plate and a fixed clamp block. The vertical guide rod is a screw structure fixedly connected to the top and bottom ends of the heating furnace. Two locking nuts are provided on the vertical guide rod, and a The bottom end of the sampling tube is inserted into and clamped in the slot of the fixed clamp block of the lower bracket. The horizontal limit plates on the upper bracket and the lower bracket are horizontally locked and positioned by the corresponding two locking nuts, thereby connecting the catalytic jet stirring reactor to the heating furnace.

10. A catalytic jet stirred reactor suitable for gas-solid two-phase catalytic reaction according to claim 9, characterized in that: An exhaust outlet is provided on the side wall of the bottom of the sampling tube.

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