Axial flow moving bed reactor
By designing an axial flow moving bed reactor, the structure was simplified and the thoroughness of the gas-solid reaction and the production efficiency were improved. This solved the problems of high manufacturing difficulty and high internal component failure rate of existing moving bed reactors, and ensured long-term continuous and stable operation.
Patent Information
- Application Number
- CN202520142838.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-01-21
AI Technical Summary
Existing moving bed reactors have complex structures, are difficult to manufacture, and have a high failure rate of internal components, which affects the long-term continuous and stable operation of the reactor.
An axial flow moving bed reactor was designed, comprising a reactor shell, a solid inlet pipe, an upper gas inlet/outlet pipe, an upper chamber, a solid material layer, a supporting gas distribution plate, a lower chamber, a lower gas inlet/outlet pipe, and a solid outlet pipe, to achieve axial flow contact between solids and gases, simplifying the structure and reducing the failure rate of internal components.
This achieves a more thorough gas-solid reaction and improved production efficiency, while reducing the difficulty and cost of equipment processing and manufacturing, and ensuring the long-term continuous and stable operation of the reactor.
Smart Images
Figure CN223747541U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a chemical equipment technical field, specifically, relates to an axial flow moving bed reactor. BACKGROUND
[0002] In the field of gas-solid reaction, three kinds of reactors, fixed bed, fluidized bed and moving bed, are mainly used.
[0003] Fixed bed reactor is a kind of reactor filled with solid catalyst or solid reactant to realize multiphase reaction process. The solid is usually in the form of particles, which is stacked into a bed of a certain height (or thickness). The bed is stationary, and the gas passes through the bed for reaction. The characteristics are small back mixing, simple structure, poor heat transfer, and difficult replacement of solid particles.
[0004] Fluidized bed reactor is a kind of reactor that uses gas or liquid to pass through the granular solid layer to make the solid particles in suspended motion state, and carries out gas-solid phase reaction process or liquid-solid phase reaction process. The characteristics are good heat and mass transfer effect, large wear and tear, and large power consumption.
[0005] In the moving bed reactor, according to the different relative motion directions of solid and fluid, it can be divided into axial flow moving bed and radial flow moving bed. The moving bed reactor has the characteristics of small back mixing, continuous replacement of solid particles, etc.
[0006] At present, the moving bed reactor widely used in chemical industry is basically a radial flow reactor, which has the advantages of small back mixing, small flow resistance, suitable for large-scale, etc. At the same time, its shortcomings are also very prominent, such as complex structure, high manufacturing difficulty, high cost, high failure rate of internal parts, which seriously affects the long-period continuous and stable operation of the reactor. INVENTION CONTENTS
[0007] The utility model aims at providing an axial flow moving bed reactor, which has the characteristics of simple structure, low failure rate of internal parts, complete gas-solid reaction, high production efficiency, simple processing and manufacturing, and low cost.
[0008] In order to achieve the above purpose, the utility model provides an axial flow moving bed reactor, which comprises a reactor shell, a solid introduction pipe, an upper gas inlet and outlet pipe, an upper chamber, a solid layer, a supporting gas distribution plate, a lower chamber, a lower gas inlet and outlet pipe and a solid outlet pipe.
[0009] The solid introduction pipe extends into the upper chamber, and the solid particles enter the reactor through the solid introduction pipe to form a solid layer. The solid particles in the solid layer move downward along the reactor axis, and finally are discharged by the solid outlet pipe extending into the lower chamber.
[0010] The upper gas inlet and outlet pipe and the lower gas inlet and outlet pipe are arranged between the solid inlet pipe and the solid outlet pipe and connected to the reactor shell, and the support and gas distribution plate is arranged inside the reactor shell to support the solid layer and uniformly distribute gas.
[0011] In an optional embodiment, the solid inlet pipe is vertically connected to the top of the reactor shell, including a single pipe or multiple pipes uniformly distributed.
[0012] The single solid inlet pipe is arranged on the axis of the reactor shell.
[0013] The multiple solid inlet pipes are uniformly distributed around the axis of the reactor shell.
[0014] In an optional embodiment, the upper gas inlet and outlet pipe is connected to the side wall of the reactor shell, the lower end surface of the solid inlet pipe is lower than the lower edge of the upper gas inlet and outlet pipe connection part, and the upper space of the solid layer forms an upper chamber inside the reactor.
[0015] In an optional embodiment, the support and gas distribution plate includes a perforated plate or a V-shaped wire mesh, and the support and gas distribution plate includes a flat plate or a tapered pipe.
[0016] In an optional embodiment, the solid outlet pipe is vertically connected to the bottom of the reactor shell, including a single pipe or multiple pipes uniformly distributed.
[0017] The single solid outlet pipe is arranged on the axis of the reactor shell.
[0018] The multiple solid outlet pipes are uniformly distributed around the axis of the reactor shell.
[0019] In an optional embodiment, the lower gas inlet and outlet pipe is connected to the side wall of the reactor shell and located below or laterally below the support and gas distribution plate, the solid outlet pipe is connected to the support and gas distribution plate, and the lower space of the support and gas distribution plate forms a lower chamber inside the reactor.
[0020] In an optional embodiment, when the support and gas distribution plate is a flat plate, the lower gas inlet and outlet pipe is arranged below the support and gas distribution plate.
[0021] In an optional embodiment, when the support and gas distribution plate is a tapered pipe, the lower gas inlet and outlet pipe is arranged laterally below the support and gas distribution plate, and a material distribution cone is arranged radially inside the support and gas distribution plate.
[0022] In an optional embodiment, the tip of the material distribution cone is upward, and a material discharge annular gap is arranged between the material distribution cone and the support and gas distribution plate for downward movement of solid particles.
[0023] In an optional embodiment, the solid leading-out pipe comprises a single root, the support cloth gas distribution plate comprises a discharging cone at the bottom, and the top end of the solid leading-out pipe is directly connected with the discharging cone.
[0024] The axial flow moving bed reactor in the utility model can realize axial flow contact of solid and gas with simple structure, and can carry out two kinds of contact reactions of parallel flow or countercurrent flow, reduces the processing and manufacturing cost of the equipment, and reduces the equipment manufacturing difficulty and the internal part failure rate while ensuring the reaction efficiency and making the gas-solid reaction more thorough.
[0025] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS
[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.
[0027] Figure 1 It is a structural schematic diagram of one form of axial flow moving bed reactor in the present application;
[0028] Figure 2 It is a structural schematic diagram of another form of axial flow moving bed reactor in the present application.
[0029] Icon:
[0030] 1-reaction vessel shell; 2-solid leading-in pipe; 3-upper gas inlet and outlet pipe; 4-upper chamber; 5-solid material layer; 6-support cloth gas distribution plate; 7-lower chamber; 8-lower gas inlet and outlet pipe; 9-solid leading-out pipe; 10-material uniformizing cone. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0032] In the description of the present application, it should be noted that the terms "in", "out" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The term "a plurality of" means two or more, unless otherwise explicitly specified and limited. In addition, the terms "first", "second", and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0033] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "set", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0034] The axial flow moving bed reactor in the utility model, mainly through simple component structure realizes solid and gas axial parallel flow or countercurrent contact, and can include gas-solid contact reaction efficiency, compared with other moving bed reactor forms of the prior art, can simplify equipment structure, reduce equipment processing and manufacturing difficulty and internal part failure rate, and ensure long-period continuous stable operation of the reactor.
[0035] Referring to Figure 1 The axial flow moving bed reactor in the utility model, the main structure includes a reactor shell 1, and necessary auxiliary structures, wherein the auxiliary structures include a solid introduction pipe 2, an upper gas inlet and outlet pipe 3, an upper chamber 4, a solid material layer 5, a support air distribution plate 6, a lower chamber 7, a lower gas inlet and outlet pipe 8 and a solid discharge pipe 9.
[0036] The auxiliary structure is mainly set from the solid material inlet and outlet angle, the gas material inlet and outlet angle, the support and flow guide discharge for solid material, the uniform distribution of gas material and the gas-solid separation angle.
[0037] From the solid material inlet and outlet angle, the reactor shell 1 is connected with the solid introduction pipe 2 extending into the upper chamber 4 inside the reactor shell 1 and the solid discharge pipe 9 extending into the lower chamber 7, and the solid particles are transported into the reactor through the solid introduction pipe 2 to form a dynamic downward solid material layer 5 inside the reactor.
[0038] The solid particles form the solid material layer 5 by piling and settling after entering the reactor from the top of the reactor shell 1, and the solid material layer 5 moves downward along the reactor axis in a direction based on the dynamic angle, and finally makes the solid particles complete the entire downward movement path of the solid material layer 5 and is discharged from the solid discharge pipe 9 extending into the lower chamber 7 after the gas-solid contact reaction with the gas.
[0039] From the gas material inlet and outlet angle, and in combination with the contact reaction of the gas material and the solid material, the upper gas inlet and outlet pipe 3 and the lower gas inlet and outlet pipe 8 connected to the reactor shell 1 are arranged between the solid inlet pipe 2 and the solid discharge pipe 9, and the gas material passes through the upper gas inlet and outlet pipe 3 and the lower gas inlet and outlet pipe 8 to pass through the solid material layer 5 from top to bottom or from bottom to top after entering the reactor, so that the gas material can flow or counterflow along the reactor axis and contact the solid particles.
[0040] From the necessary auxiliary structure angle, the support gas distribution plate 6 is arranged in the reactor shell 1, which is mainly used to support the solid material layer 5, promote the flow guide and discharge of the solid material at the bottom of the reactor, make the gas uniformly distributed and fully contact with the solid material, and separate the gas phase material and the solid phase material.
[0041] Through the above composition in the application, the internal structure of the moving bed reactor can be greatly simplified, and the axial flow movement of the solid material and the gas material can be ensured, and the reaction efficiency of the gas-solid contact reaction is effectively improved.
[0042] The solid inlet pipe 2 in the utility model is vertically connected to the top of the reactor shell 1, and is mainly used for the axial flow input of the solid material from top to bottom, and from the composition, the solid inlet pipe 2 can be a single root as shown in the drawing, or a plurality of roots uniformly arranged, which can all achieve the technical purpose of making the solid material enter the reactor to form the solid material layer 5.
[0043] When the solid inlet pipe 2 includes a single root, the single solid inlet pipe 2 is arranged on the axis of the reactor shell 1, so that the solid material can be introduced into the reactor from the center of the top of the reactor shell 1, and the solid particles can form a solid material layer 5 with a conical top when piling up, so that the distribution of the solid material is more uniform.
[0044] Similarly, in order to ensure that the above-mentioned solid material layer 5 with a conical top can be formed, when the solid inlet pipe 2 includes a plurality of roots, the plurality of solid inlet pipes 2 are circumferentially arranged around the axis of the reactor shell 1, and specifically, the plurality of solid inlet pipes 2 are arranged on the same circumference with the axis of the reactor shell 1 as the center reference, and can ensure stable and uniform feeding in a uniformly distributed form.
[0045] On the basis of the solid material moving downward from top to bottom, the gas material in the utility model includes two reaction forms of relative co-current gas-solid contact from top to bottom and relative counter-flow gas-solid contact from bottom to top.
[0046] Based on this, the upper gas inlet and outlet pipe 3 in the application is connected on the side wall of the reactor shell 1, whether it is single or multiple, the lower end surface of the solid introduction pipe 2 is lower than the lower edge of the connection part of the upper gas inlet and outlet pipe 3 on the reactor shell 1, so that the upper space of the solid material layer 5 constitutes the upper chamber 4 inside the reactor.
[0047] Through the setting mode, the impact / turbulent flow influence caused by the gas flow into / out of the upper gas inlet and outlet pipe 3 on the introduction of the solid material can be avoided, and the solid material can be effectively and reliably introduced into the reactor interior and form the solid material layer 5.
[0048] From the perspective of supporting the solid material layer 5, uniformly distributing the gas and fully contacting the solid material, and separating the gas phase material and the solid phase material, the support air distribution plate 6 is located at the bottom of the solid material layer 5, and the support air distribution plate 6 can support the bottom of the solid material layer 5 and uniformly disperse the gas passing through the bottom of the solid material layer 5.
[0049] Further, the support air distribution plate 6 includes a perforated plate or a V-shaped wire mesh, which can play the above-mentioned supporting and air distribution roles, and the structure of the perforated plate or the V-shaped wire mesh can be set according to the actual situation. Meanwhile, from the shape perspective, the support air distribution plate 6 in the utility model includes a flat plate or a conical tube.
[0050] From the perspective of discharging the solid material, the solid discharge pipe 9 is vertically connected at the bottom of the reactor shell 1 and communicates with the solid material layer 5, and similarly, the solid discharge pipe 9 includes a single pipe or multiple pipes.
[0051] When the solid discharge pipe 9 includes a single pipe, the single solid discharge pipe 9 is arranged on the axis of the reactor shell 1, so that the solid material can be discharged from the center of the bottom of the reactor shell 1, which is beneficial to form a stable and reliable discharging state and constitutes a dynamic downward moving reaction state of the solid material layer 5.
[0052] Similarly, in order to ensure that the above-mentioned dynamic downward moving reaction state of the solid material layer 5 can be formed, when the solid discharge pipe 9 includes multiple pipes, the multiple solid discharge pipes 9 are circumferentially and uniformly distributed around the axis of the reactor shell 1.
[0053] From the perspective of the gas material entering and exiting at the bottom of the reactor, the lower gas inlet and outlet pipe 8 is connected on the side wall of the reactor shell 1 and located below or laterally below the support air distribution plate 6, the solid discharge pipe 9 is connected with the support air distribution plate 6, and the lower space of the support air distribution plate 6 constitutes the lower chamber 7 inside the reactor.
[0054] Specifically, referring to the structure in Figure 1 , when the support cloth gas plate 6 comprises a flat plate structure, the lower gas inlet and outlet pipe 8 is arranged at the lower part of the support cloth gas plate 6 and communicates with the lower chamber 7, and when the gas material flows from the lower part to the upper part, it can pass through the support cloth gas plate 6 and the solid material layer 5 from the lower part to the upper part through the lower chamber 7 at the lower part of the support cloth gas plate 6, and after the countercurrent gas-solid contact reaction of the axial flow movement process, it is discharged from the reactor through the upper gas inlet and outlet pipe 3.
[0055] When the gas material flows from the upper part to the lower part, it passes through the solid material layer 5 from the upper part to the lower part through the upper chamber 4 at the upper part of the reactor, and after the cocurrent gas-solid contact reaction of the axial flow movement process, it passes through the support cloth gas plate 6 and is discharged from the reactor through the lower gas inlet and outlet pipe 8.
[0056] Referring to the structure in Figure 2 , when the support cloth gas plate 6 is a conical pipe structure, the lower gas inlet and outlet pipe 8 is arranged at the lower side of the support cloth gas plate 6 and communicates with the lower chamber 7, and the same can achieve the axial flow of the gas material as described above.
[0057] At the same time, by arranging the lower gas inlet and outlet pipe 8 at the lower side of the conical support cloth gas plate 6, a certain rotational turbulent flow can be formed in the inlet and outlet process of the gas material in the lower chamber 7, which can enhance the buffering effect and improve the reaction effect of gas-solid contact.
[0058] By arranging the support cloth gas plate 6 at the bottom of the solid material layer 5, a relatively good gas-solid separation effect can be achieved, which can meet the prerequisite demand of effectively supporting the solid material layer 5 and avoid the backmixing of gas-solid materials at the bottom of the reactor.
[0059] Further, when the support cloth gas plate 6 is a conical pipe structure, in order to promote the flow guiding and discharging of solid particles at the bottom of the reactor, a material uniformizing cone 10 is arranged at the radial inner side of the support cloth gas plate 6, the tip of the material uniformizing cone 10 is upward, and a discharging annular gap is arranged between the material uniformizing cone 10 and the conical support cloth gas plate 6 for downward movement of solid particles.
[0060] The arrangement of the discharging annular gap, combined with the upward tip of the material uniformizing cone 10, can promote the formation of circumferential sliding discharging of solid particles at the upper part of the solid leading-out pipe 9.
[0061] Preferably, when the support cloth gas plate 6 is a conical pipe structure, the solid leading-out pipe 9 comprises a single pipe, and the support cloth gas plate 6 comprises a discharging cone at the bottom, the top end of the single solid leading-out pipe 9 is connected to the discharging cone, and combined with the arrangement of the material uniformizing cone 10, the smoothness of the discharging of solid materials can be improved to the maximum extent, and the downward movement state of the axial flow of the solid material layer 5 can also be formed.
[0062] The solid layer 5 in the utility model is a catalyst layer or a reactant layer, and the gas material and the solid material have gas-solid contact reaction in the solid layer 5.
[0063] The technical scheme in the application is described below through two specific implementation forms.
[0064] Example 1:
[0065] In the water-based chemical chain hydrogen production process system, the reducing reactor adopts the concurrent moving bed reactor in the utility model.
[0066] The oxygen carrier enters the reactor shell 1 through the solid introduction pipe 2, the solid introduction pipe 2 is composed of one or multiple uniformly distributed pipelines, the oxygen carrier forms the solid layer 5 above the support cloth gas plate 6, the oxygen carrier moves directionally from top to bottom along the reactor shell 1, and the reduced oxygen carrier flows out of the reactor shell 1 through the solid extraction pipe 9.
[0067] The solid introduction pipe 2 is inserted into the reactor shell 1, the lower end of the pipeline of the solid introduction pipe 2 is lower than the lower edge of the connection part of the upper gas inlet and outlet pipe 3 in the reactor shell 1, and the upper chamber 4, that is, the reaction gas temporary storage space, is formed at the top of the reactor shell 1.
[0068] The natural gas and the water vapor mixed gas enter the upper chamber 4 through the upper gas inlet and outlet pipe 3, and the mixed gas passes through the solid layer 5 along the axis of the reactor shell 1 in parallel flow. The mixed gas and the oxygen carrier have gas-solid reaction in the solid layer 5, hydrogen and carbon dioxide are generated, and the reaction products are collected to the lower chamber 7 and are led out through the lower gas inlet and outlet pipe 8.
[0069] The support cloth gas plate 6 plays the role of supporting the solid layer 5, uniformly moving the solid, uniformly distributing the gas and gas-solid separation.
[0070] Example 2:
[0071] In the chemical chain combustion process system, the reducing reactor adopts the countercurrent moving bed reactor in the utility model.
[0072] The oxygen carrier enters the reactor shell 1 through the solid introduction pipe 2, the solid introduction pipe 2 is composed of one or multiple uniformly distributed pipelines, the oxygen carrier forms the solid layer 5 above the inner part, the oxygen carrier moves directionally from top to bottom along the reactor shell 1, and the reduced oxygen carrier flows out of the reactor shell 1 through the solid extraction pipe 9.
[0073] The solid introduction pipe 2 is inserted into the reactor shell 1, the lower end of the pipeline of the solid introduction pipe 2 is lower than the lower edge of the connection part of the upper gas inlet and outlet pipe 3 in the reactor shell 1, and the upper chamber 4, that is, the reaction gas temporary storage space, is formed at the top of the reactor shell 1.
[0074] Natural gas enters the lower chamber 7 through the lower gas inlet and outlet pipe 8, is uniformly distributed when passing through the supporting cloth gas distribution plate 6, and then flows countercurrently along the axis of the reactor shell 1 through the solid material layer 5. The natural gas and the oxygen carrier react in the solid material layer 5 to generate carbon dioxide and water vapor, and the reaction products are collected in the upper chamber 4 and led out through the upper gas inlet and outlet pipe 3.
[0075] The supporting cloth gas distribution plate 6 serves to support the solid material layer 5, uniformly move the solid downward, uniformly distribute the gas, and separate the gas and the solid.
[0076] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.
[0077] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Various modifications and changes can be made by those skilled in the art based on the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. An axial flow moving bed reactor, characterized in that, include: Reactor shell, solid inlet pipe, upper gas inlet and outlet pipe, upper chamber, solid material layer, supporting gas distribution plate, lower chamber, lower gas inlet and outlet pipe and solid outlet pipe; The solid inlet pipe extends into the upper chamber, and solid particles enter the reactor through the solid inlet pipe to form a solid material layer. The solid particles in the solid material layer move directionally from top to bottom along the reactor axis and are finally discharged through the solid outlet pipe extending into the lower chamber. The upper gas inlet / outlet pipe and the lower gas inlet / outlet pipe are disposed between the solid inlet pipe and the solid outlet pipe and connected to the reactor shell. The supporting gas distribution plate is disposed inside the reactor shell to support the solid material layer and distribute gas evenly.
2. The axial flow moving bed reactor according to claim 1, characterized in that, The solid inlet pipe is vertically connected to the top of the reactor shell, and may be a single pipe or multiple pipes evenly distributed. A single solid inlet pipe is arranged on the axis of the reactor shell; Multiple solid inlet pipes are evenly distributed circumferentially around the axis of the reactor shell.
3. The axial flow moving bed reactor according to claim 1, characterized in that, The upper gas inlet / outlet pipe is connected to the side wall of the reactor shell, and the lower end face of the solid inlet pipe is lower than the lower edge of the connection part of the upper gas inlet / outlet pipe. The upper space of the solid material layer constitutes the upper chamber inside the reactor.
4. The axial flow moving bed reactor according to claim 1, characterized in that, The supporting air distribution plate includes a perforated plate or a V-shaped wire mesh, and the supporting air distribution plate includes a flat plate shape or a tapered tube shape.
5. The axial flow moving bed reactor according to claim 1, characterized in that, The solid outlet pipe is vertically connected to the bottom of the reactor shell, and includes a single pipe or multiple pipes evenly distributed. A single solid outlet pipe is arranged on the axis of the reactor shell; Multiple solid outlet pipes are evenly distributed circumferentially around the axis of the reactor shell.
6. The axial flow moving bed reactor according to claim 1, characterized in that, The lower gas inlet / outlet pipe is connected to the side wall of the reactor shell and is located below or to the side of the supporting gas distribution plate. The solid outlet pipe is connected to the supporting gas distribution plate, and the lower space of the supporting gas distribution plate constitutes the lower chamber inside the reactor.
7. The axial flow moving bed reactor according to claim 4, characterized in that, When the supporting gas distribution plate is flat, the lower gas inlet / outlet pipe is located at the lower part of the supporting gas distribution plate.
8. The axial flow moving bed reactor according to claim 4, characterized in that, When the supporting gas distribution plate is conical, the lower gas inlet and outlet pipe is located on the lower side of the supporting gas distribution plate, and a material distribution cone is provided on the radial inner side of the supporting gas distribution plate.
9. The axial flow moving bed reactor according to claim 8, characterized in that, The tip of the material distribution cone faces upward, and a feeding annular gap is provided between the material distribution cone and the supporting air distribution plate to allow solid particles to move downward.
10. The axial flow moving bed reactor according to claim 8, characterized in that, The solid outlet pipe is a single tube, and the supporting air distribution plate includes a discharge cone at the bottom. The top end of the solid outlet pipe is directly connected to the discharge cone.