Fluidized bed reactor

Abstract

The fluidized bed reactor comprises a fluidized bed main body and a gas distribution assembly, and a conical part is formed at one end, provided with a gas inlet, of the fluidized bed main body. The gas distribution assembly comprises a first gas distributor arranged in the conical part and a second gas distributor arranged above the conical part, the first gas distributor comprises a gas uniformizing ring pipe, a gas flow input pipe and a plurality of gas uniformizing branch pipes, and a main body of the second gas distributor is of a plate-shaped structure. The gas flow input pipe is connected with or forms the gas inlet so as to introduce gas into the first gas distributor, and the gas equalizing ring pipe is communicated to the gas flow input pipe through the plurality of gas equalizing branch pipes. A plurality of first gas holes are formed in the surface of the gas homogenizing ring pipe and are configured to face the second gas distributor, and a plurality of second gas holes are formed in the surfaces of the gas homogenizing branch pipes and are configured to face the inner wall surface of the conical part.

Description

Technical Field

[0001] This application relates to the field of fluidized bed technology, and particularly to a fluidized bed reactor. Background Technology

[0002] Fluidized bed reactors are key equipment in industrial production for processes such as gas-solid reaction, drying, granulation, and mixing. Their basic principle is to allow gas to pass through a bed of solid particles from bottom to top, so that the solid particles are in a suspended fluidized state, thereby achieving full contact and mass and heat transfer between the gas and solid materials.

[0003] Traditional fluidized bed reactors suffer from uneven gas distribution in practical applications. Traditional fluidized bed reactors use sieve plates or straight-hole gas distribution devices, which have poor uniformity in the distribution of output gas. This can easily lead to channeling (gas does not pass evenly through all particles in the fluidized bed, but instead concentrates into one or several narrow, low-resistance channels that pass through the bed at high speed) and dead bed (particles in some areas of the fluidized bed do not receive any gas support and are in a static, accumulated state). These phenomena seriously affect the gas-solid contact efficiency and thus the process treatment effect. Summary of the Invention

[0004] This application is made in view of the aforementioned state of the prior art. The purpose of this application is to provide a fluidized bed reactor capable of improving the uniformity of gas distribution, thereby enhancing the fluidization process effect.

[0005] This application provides a fluidized bed reactor, comprising a fluidized bed body and a gas distribution assembly. One end of the fluidized bed body, where a gas inlet is located, forms a conical portion. The gas distribution assembly includes a first gas distributor disposed within the conical portion and a second gas distributor disposed above the conical portion. The first gas distributor includes a gas equalization ring pipe, a gas flow input pipe, and multiple gas equalization branch pipes. The main body of the second gas distributor has a plate-like structure. The gas flow input pipe is connected to or forms the gas inlet to introduce gas into the first gas distributor. The gas equalization ring pipe is connected to the gas flow input pipe via the multiple gas equalization branch pipes. Multiple first pores are formed on the surface of the gas equalization ring pipe, and these first pores are configured to face the second gas distributor. Multiple second pores are formed on the surface of the gas equalization branch pipes, and these second pores are configured to face the inner wall surface of the conical portion.

[0006] In at least one possible implementation, the plurality of gas equalization branches are evenly distributed and connected to the side of the airflow input pipe, and the top surface of the airflow input pipe forms a plurality of third air holes, which are configured to face the second gas distributor.

[0007] In at least one possible implementation, in a plane passing through the central axis of the equalizing branch pipe and the central axis of the airflow input pipe, the angle between the axis of the equalizing branch pipe and the generatrix of the inner wall surface of the tapered portion is 0 to 15 degrees.

[0008] In at least one possible implementation, the sum of the radial cross-sectional areas of all the gas distribution branches is 1.1 to 1.3 times the radial cross-sectional area of ​​the gas inlet pipe.

[0009] In at least one possible implementation, the sum of the opening areas of the plurality of first air holes, the plurality of second air holes, and the plurality of third air holes is 0.5 to 1.5 times the area of ​​the radial cross-section of the airflow input pipe.

[0010] In at least one possible implementation, the vertical distance from the gas equalization ring pipe to the second gas distributor is 0.5 to 1 times the diameter of the gas equalization ring pipe; the distance from the gas equalization ring pipe to the inner wall of the conical portion is 0.1 to 0.2 times the vertical distance from the gas equalization ring pipe to the second gas distributor.

[0011] In at least one possible implementation, the diameter of the fluidized bed body is less than or equal to 500 mm, and the diameter of the gas equalization ring tube is 0.5 to 0.8 times the diameter of the fluidized bed body; or, the diameter of the fluidized bed body is greater than 500 mm and less than 1000 mm, and the first gas distributor is provided with two sleeved gas equalization ring tubes at the same horizontal height, the diameter difference between the two gas equalization ring tubes being 0.3 to 0.5 times the diameter of the second gas distributor.

[0012] In at least one possible implementation, the gas inlet is detachably connected to the gas flow input pipe.

[0013] In at least one possible implementation, a gas filter is provided at one end of the fluidized bed body where a gas outlet is located to filter solid particles in the gas flow; a heating section is provided on the radially outer side of the fluidized bed body to heat the solid material.

[0014] In at least one possible implementation, the fluidized bed reactor further includes a fluidized bed support for supporting the fluidized bed body, the fluidized bed support including elastic supports and a vibration device for applying vibration to the fluidized bed body to enhance the fluidization effect.

[0015] The fluidized bed reactor provided in this application features a two-stage synergistic gas distribution structure consisting of a first gas distributor and a second gas distributor. The first gas distributor's equalization ring pipe has upward-facing orifices that spray air to provide a pre-uniform flow to the second gas distributor; the second gas distributor's equalization branch pipes spray air towards the inner wall of the conical section, forming a wall-adhering air curtain that effectively scours the conical wall area. This solves or alleviates the technical problem (in the prior art) of material accumulation and dead zones at the edges of plate-shaped distributors. This technical solution ensures a highly uniform pressure field for the airflow entering the second gas distributor, significantly reducing its uniform load. Even when using high-precision distribution elements such as sintered filter discs, it can still maintain low pressure drop operation and is less prone to clogging. Compared to existing single-stage distributors, the technical solution of this application effectively suppresses channeling and dead bed formation, and significantly improves fluidization quality and gas-solid contact efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a fluidized bed reactor according to the first embodiment of this application.

[0017] Figure 2 This is a schematic diagram of the structure of a fluidized bed reactor according to a second embodiment of this application.

[0018] Figure 3 This is a schematic diagram of the structure of a fluidized bed reactor according to the third embodiment of this application.

[0019] Figure 4 This is a partial structural schematic diagram of a fluidized bed according to one embodiment of this application.

[0020] Figure 5 This is a first structural schematic diagram of a gas distribution assembly according to one embodiment of this application.

[0021] Figure 6 This is a schematic diagram of the second structure of a gas distribution assembly according to one embodiment of this application.

[0022] Figure 7 This is a schematic diagram of the third structure of a gas distribution assembly according to one embodiment of this application.

[0023] Explanation of reference numerals in the attached figures

[0024] 100 fluidized bed body

[0025] 110 Conical section

[0026] 101 Gas Inlet

[0027] 102 Gas Outlet

[0028] 103 Solid Inlet

[0029] 104 Solids Export

[0030] 200 Gas Distribution Components

[0031] 210 First Gas Distributor

[0032] 211 Gas Equalization Ring Pipe

[0033] 212 Equalizing branch

[0034] 213 Airflow inlet pipe

[0035] 220 Second Gas Distributor

[0036] 300 fluidized bed support

[0037] 301 Elastic Support

[0038] 302 Vibration Device

[0039] 401 Gas Filtration Section

[0040] 402 Heating Section Detailed Implementation

[0041] Exemplary embodiments of this application are described below with reference to the accompanying drawings. It should be understood that these specific descriptions are for teaching those skilled in the art how to implement this application only, and are not intended to exhaustively describe all possible methods of this application, nor to limit the scope of this application. For ease of understanding, the elements shown in the various drawings may include elements such as dimensions and scales that are expressed differently from actual dimensions and scales.

[0042] The embodiments of this application provide a fluidized bed reactor suitable for gas-solid reaction systems, such as... Figure 1 , Figure 2 and Figure 3 As shown, the fluidized bed reactor may include a fluidized bed body 100 and a gas distribution assembly 200. The fluidized bed body 100 may be cylindrical (including approximately cylindrical), with a gas inlet 101 at the bottom and a gas outlet 102 at the top for input and output gas flow, respectively. The middle section of the fluidized bed body 100 (between the gas inlet 101 and the gas outlet 102) is used to store solid materials, and the fluidized bed body 100 is provided with a solid inlet 103 and a solid outlet 104 for input and output of solid materials.

[0043] like Figure 1 , Figure 2 and Figure 3As shown, a conical portion 110 can be formed at one end (i.e., the bottom) of the fluidized bed body 100 where the gas inlet 101 is located. The detachable design allows the conical portion 110 to be separated from the fluidized bed body 100, facilitating maintenance and replacement of the conical portion 110 and its internal structure. It can be understood that providing the conical portion 110 at the bottom of the fluidized bed body 100 allows for more stable and uniform contact between the gas and the solid material.

[0044] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the gas distribution assembly 200 may include a first gas distributor 210 disposed within the conical portion 110 and a second gas distributor 220 disposed above the conical portion 110. The cooperation of the first gas distributor 210, the second gas distributor 220, and the conical portion 110 can better ensure that the airflow is evenly distributed relative to the solid material.

[0045] like Figure 5 , Figure 6 and Figure 7 As shown, the first gas distributor 210 may include a gas equalization ring pipe 211, a gas flow inlet pipe 213, and a plurality of gas equalization branch pipes 212. The gas flow inlet pipe 213 may be connected to or form a gas inlet 101 to introduce gas into the first gas distributor 210, and the gas equalization ring pipe 211 may be connected to the gas flow inlet pipe 213 via the plurality of gas equalization branch pipes 212.

[0046] Preferably, the gas inlet 101 can be detachably connected to the gas flow input pipe 213, allowing for the replacement of the first gas distributor 210 with different parameters according to different operating conditions and material process requirements, while also facilitating the maintenance of the first gas distributor 210. For example, the gas inlet 101 can be connected to the gas flow input pipe 213 using a threaded structure.

[0047] Specifically, the equalization ring pipe 211 can be a closed annular tubular structure, which can be arranged horizontally or approximately horizontally. The center of the equalization ring pipe 211 can coincide with the axis of the airflow input pipe 213. The equalization branch pipe 212 can extend from the upper end of the airflow input pipe 213 to the equalization ring pipe 211.

[0048] Multiple first air holes can be formed on the surface of the equalizing ring pipe 211, and these first air holes can be configured to face the second gas distributor 220. The airflow blown vertically upward from the first air holes can form a pre-distributed airflow, forming the equalizing foundation. Multiple second air holes can be formed on the surface of the equalizing branch pipe 212, and these second air holes are configured to face the inner wall surface of the conical portion 110. The airflow blown from the second air holes toward the conical portion 110 can form a wall-adhering air curtain on the inner wall surface of the conical portion 110, which can effectively reduce the accumulation of material and dead bed phenomenon at the edge corners.

[0049] The main body of the second gas distributor 220 can be a plate-like structure. For example, such as... Figure 1 As shown, the second gas distributor 220 can be a wind-cap type distributor; such as Figure 2 and Figure 3 As shown, the second gas distributor 220 can also be a sintered metal filter disc type distributor, which has the structural advantages of smaller pore size and denser arrangement, enabling more uniform gas distribution. The second gas distributor 220 can also serve as a support structure for solid materials (especially solid materials that have not entered the fluidized state). It can be understood that because the first gas distributor 210 pre-distributes the airflow, reducing the risk of solid particles forming blockages and dead zones in the second gas distributor 220, the second gas distributor 220 can employ a more precise gas distribution structure (e.g., smaller pores), thereby improving the material fluidization effect.

[0050] Preferred, such as Figure 6 and Figure 7 As shown, multiple gas equalization branch pipes 212 can be evenly distributed and connected to the side of the gas inlet pipe 213. In particular, in this embodiment, three evenly distributed gas equalization branch pipes 212 can be provided. Multiple third air holes can be formed on the top surface of the gas inlet pipe 213, and the third air holes can be configured to face the second gas distributor 220. The airflow blown out from the third air holes toward the second gas distributor 220 can enhance the airflow distribution in the radial central region, further improving the gas equalization effect of the fluidized bed reactor.

[0051] Preferred, such as Figure 4 As shown, in the plane passing through the central axis of the equalization branch pipe 212 and the central axis of the airflow input pipe 213, the angle α between the axis of the equalization branch pipe 212 and the generatrix of the inner wall surface of the conical portion 110 can be 0 to 15 degrees. Here, the opening direction of the angle formed by the axis of the equalization branch pipe 212 and the generatrix of the inner wall surface of the conical portion 110 can be upward along the inner wall surface of the conical portion 110 or downward along the inner wall surface of the conical portion 110.

[0052] Preferably, the total area of ​​the radial cross-section of all gas equalization branch pipes 212 can be 1.1 to 1.3 times the area of ​​the radial cross-section of the gas inlet pipe 213. This range allows the gas velocity to be slightly reduced after being split at the gas equalization branch pipe 212, the dynamic pressure to be converted into static pressure, the local resistance of the tee and the friction loss along the way to make the outlet pressure of each gas equalization branch pipe 212 equal.

[0053] Preferably, the total area of ​​the openings of the plurality of first air holes, the plurality of second air holes, and the plurality of third air holes is 0.5 to 1.5 times the area of ​​the radial cross-section of the airflow inlet pipe 213. This range can balance the pressure drop and air distribution uniformity of the first gas distributor 210, avoiding excessive pressure drop while also preventing poor fluidization at the bottom of the bed due to insufficient airflow penetration caused by low orifice velocity.

[0054] Preferably, the vertical distance h from the gas equalization ring pipe 211 to the second gas distributor 220 can be the diameter of the gas equalization ring pipe 211 (here, it refers to the annular structure formed by the gas equalization ring pipe 211 (see...) Figure 7 The diameter of the gas distribution ring 211 is 0.5 to 1 times that of the pipe body constituting the gas distribution ring 211. This range ensures that the velocity and pressure of the gas flow ejected from the gas distribution ring 211 are balanced when it reaches the second gas distributor 220. This prevents the jet from directly impacting the second gas distributor and also avoids excessive gas diffusion, which would weaken the gas pre-distribution effect.

[0055] Preferably, the distance from the gas equalization ring pipe 211 to the inner wall of the conical portion 110 is 0.1 to 0.2 times the vertical distance h from the gas equalization ring pipe 211 to the second gas distributor 220. This narrow gap design allows the wall-adhering airflow ejected from the second air hole to form a high-speed air curtain, effectively scouring the wall of the conical portion and preventing particle deposition, while avoiding excessive gap that could lead to air curtain attenuation and failure.

[0056] When the diameter of the fluidized bed body 100 is less than or equal to 500 mm, the diameter of the gas equalization ring pipe 211 can be 0.5 to 0.8 times the diameter of the fluidized bed body 100. In this case, only one gas equalization ring pipe 211 is needed to cover the effective gas distribution cross section. When the diameter of the fluidized bed body 100 is greater than 500 mm but less than 1000 mm, the first gas distributor 210 can be equipped with two nested gas equalization ring pipes 211 at the same horizontal height. The diameter difference between the two gas equalization ring pipes 211 can be 0.3 to 0.5 times the diameter D of the second gas distributor 220. When the radial dimension of the fluidized bed reactor is large, adding a gas equalization ring pipe 211 can effectively improve the radial gas distribution uniformity.

[0057] Preferably, a gas filter 401 can be provided at one end of the fluidized bed body 100 where the gas outlet 102 is located to filter solid particles in the gas flow. A heating section 402 can be provided on the radially outer side of the fluidized bed body 100 (particularly in the area where solid materials are placed) to heat the solid materials. The heating section 402 can be a resistance heater (e.g., a ceramic plate heater), a non-contact heater (e.g., an infrared radiation heater), or an electromagnetic induction heater. The heating section 402 enables rapid heating of the material, providing heat support for the gas-solid reaction.

[0058] The fluidized bed reactor may further include a fluidized bed support 300 for supporting the fluidized bed body 100. The fluidized bed support 300 may include an elastic support 301 and a vibration device 302. The vibration device 302 can be used to apply vibration to the fluidized bed body 100 to enhance the fluidization effect. For example, the elastic support 301 may be a rubber spring or a metal spring, and multiple (e.g., four) elastic supports 301 may be installed at the bottom of the fluidized bed body 100. The vibration device 302 may be a vibration motor, which is fixed to the bottom of the fluidized bed body 100 by a motor mount. An eccentric block is installed at the end of the output shaft of the vibration motor. The amplitude can be changed by adjusting the eccentric block, and the vibration frequency can be adjusted by a frequency converter. Vibration can cause the material to be thrown and loosened, reducing the minimum fluidization velocity of the material and resulting in more uniform gas-solid mixing. In particular, it improves the fluidization quality of material particles near the bottom of the fluidized bed, achieving sufficient gas-solid contact and adapting to a wider variety of solid materials.

[0059] The following is an exemplary operating procedure of the fluidized bed reactor in this embodiment. First, the target heating temperature is set to 500°C, the vibration frequency to 50Hz, and the amplitude to 1mm via the control system. After starting the fluidized bed reactor, a mixed gas containing nitrogen is introduced through the gas inlet 101. The mixed gas is evenly distributed through the first gas distributor 210 and then through the second gas distributor to fluidize the powder material, achieving sufficient gas-solid contact. Simultaneously, the heating unit 402 begins heating, and the temperature sensor monitors the temperature in real time and feeds it back to the control system to ensure the temperature remains stable at 500°C. The vibration device is activated, causing the fluidized bed body 100 to vibrate, allowing the material within the fluidized bed body 100 to be fully fluidized under the combined action of airflow and vibration, achieving full contact with the mixed gas to complete the reaction. The processed material is discharged from the solid outlet 104, and the dust-laden gas is filtered by the gas filter unit 401 and discharged from the gas outlet 102.

[0060] The fluidized bed reactor provided by the embodiments of this application is particularly suitable for fields such as silicon-carbon anode synthesis, porous carbon activation, chemical vapor deposition coating, and fluidized drying.

[0061] The following is a brief description of some of the beneficial effects of the above-described embodiments of this application.

[0062] The fluidized bed reactor provided in this application forms a two-stage synergistic distribution through a first gas distributor and a second gas distributor above it: the first gas outlet of the equalizing ring pipe sprays upward to form a pre-distributed airflow, and the second gas outlet of the equalizing branch pipe sprays towards the inner wall of the conical part to form a wall-adhering air curtain, reducing the dead zone of material accumulation at the edge of the plate-shaped distributor; the third gas outlet on the top surface of the airflow input pipe further strengthens the air distribution in the central area. The three-stage air distribution structure enables the airflow pressure field entering the second distributor to be highly uniform. Combined with precision distribution elements such as sintered filter discs, it suppresses the formation of channeling and dead bed phenomena from the source, making particle fluidization more stable and significantly improving gas-solid contact efficiency.

[0063] The vibration device of the fluidized bed reactor provided in this application is mounted on the fluidized bed frame rather than directly on the high-temperature bed body, thus physically isolating the vibration source from the reaction zone. This avoids problems such as motor bearing lubrication failure and insulation aging caused by high temperatures, thereby extending the life of the vibrating components. The synergistic effect of airflow and vibration causes the bed layer to be thrown and loosened, reducing the minimum fluidization velocity of the material and further adapting to powder types that are difficult to fluidize, such as those with high viscosity, wide particle size distribution, or high density. The gas inlet and airflow input pipe are detachably connected, and the first gas distributor can be completely extracted and replaced, significantly reducing maintenance time.

[0064] Unless otherwise defined, the technical or scientific terms used in the claims and description shall have the ordinary meaning understood by those skilled in the art to which this application pertains. The terms "first," "second," and similar words used in the description and claims of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The term "and / or" includes any one or more of the terms listed in connection with the application, and all combinations thereof. Words such as "comprising" or "including" indicate that the components or objects preceding "comprising" or "including" encompass the components or objects listed following "comprising" or "including" and their equivalents, and do not exclude other components or objects. Words such as "connected" or "linked" are not limited to physical or mechanical connections, nor are they limited to direct or indirect connections.

[0065] In this application, "approximately" means that the conditions described herein can be considered to be met within a reasonable margin of error recognized by a person skilled in the art, and the following description uses this expression to convey a similar meaning.

[0066] In this application, unless otherwise stated, terms indicating direction such as "up," "down," "left," "right," "front," and "back" are used only to clearly and detailedly describe the solution of this application, and do not impose corresponding limitations on the structure of the apparatus, device, or system of this application, nor on the usage state of the apparatus, device, or system of this application.

[0067] It is understood that, in this application, when the number of parts or components is not specifically limited, the number can be one or more, where multiple refers to two or more. For cases where the number of parts or components shown in the drawings and / or described in the specification is, for example, two, three, four, etc., this specific number is generally exemplary and not restrictive, and can be understood as multiple, i.e., two or more; however, this does not mean that this application excludes the case of one.

[0068] It should be understood that the above embodiments are merely exemplary and are not intended to limit this application. Those skilled in the art can make various modifications and changes to the above embodiments under the teachings of this application without departing from the scope of this application.

Claims

1. A fluidized bed reactor, characterized in that, It includes a fluidized bed body (100) and a gas distribution assembly (200), wherein the end of the fluidized bed body (100) where the gas inlet (101) is provided is formed into a conical part (110). The gas distribution assembly (200) includes a first gas distributor (210) disposed within the conical portion (110) and a second gas distributor (220) disposed above the conical portion (110). The first gas distributor (210) includes a gas equalization ring pipe (211), a gas flow input pipe (213), and a plurality of gas equalization branch pipes (212). The main body of the second gas distributor (220) is a plate-shaped structure. The airflow input pipe (213) is connected to or forms the gas inlet (101) to introduce gas into the first gas distributor (210), and the gas equalization ring pipe (211) is connected to the airflow input pipe (213) via the plurality of gas equalization branch pipes (212). The surface of the gas equalization ring pipe (211) is formed with a plurality of first vents, the first vents being configured to face the second gas distributor (220). The surface of the gas distribution branch pipe (212) is formed with a plurality of second air holes, which are configured to face the inner wall surface of the tapered portion (110).

2. The fluidized bed reactor according to claim 1, characterized in that, The plurality of equalizing branch pipes (212) are evenly distributed and connected to the side of the airflow input pipe (213). The top surface of the airflow inlet pipe (213) forms a plurality of third air holes, which are configured to face the second gas distributor (220).

3. The fluidized bed reactor according to claim 1, characterized in that, In the plane passing through the central axis of the equalizing branch pipe (212) and the central axis of the airflow input pipe (213), the angle between the axis of the equalizing branch pipe (212) and the generatrix of the inner wall surface of the conical part (110) is 0 to 15 degrees.

4. The fluidized bed reactor according to claim 1, characterized in that, The total area of ​​the radial cross-section of all the gas equalization branch pipes (212) is 1.1 to 1.3 times the area of ​​the radial cross-section of the gas inlet pipe (213).

5. The fluidized bed reactor according to claim 2, characterized in that, The sum of the opening areas of the plurality of first air holes, the plurality of second air holes and the plurality of third air holes is 0.5 to 1.5 times the area of ​​the radial cross section of the airflow input pipe (213).

6. The fluidized bed reactor according to claim 1, characterized in that, The vertical distance from the gas equalization ring pipe (211) to the second gas distributor (220) is 0.5 to 1 times the diameter of the gas equalization ring pipe (211); The distance from the gas equalization ring pipe (211) to the inner wall of the conical part (110) is 0.1 to 0.2 times the vertical distance from the gas equalization ring pipe (211) to the second gas distributor (220).

7. The fluidized bed reactor according to claim 1, characterized in that, The diameter of the fluidized bed body (100) is less than or equal to 500 mm, and the diameter of the gas equalization ring pipe (211) is 0.5 to 0.8 times the diameter of the fluidized bed body (100). Alternatively, the diameter of the fluidized bed body (100) is greater than 500 mm and less than 1000 mm, and the first gas distributor (210) is provided with two sleeved gas equalization ring pipes (211) at the same horizontal height, and the diameter difference between the two gas equalization ring pipes (211) is 0.3 to 0.5 times the diameter of the second gas distributor (220).

8. The fluidized bed reactor according to claim 1, characterized in that, The gas inlet (101) is detachably connected to the gas flow input pipe (213).

9. The fluidized bed reactor according to claim 1, characterized in that, A gas filter section (401) is provided at one end of the fluidized bed body (100) where the gas outlet (102) is located, so as to filter solid particles in the gas flow. A heating section (402) is provided on the radial outer side of the fluidized bed body (100) to heat solid materials.

10. The fluidized bed reactor according to claim 1, characterized in that, It also includes a fluidized bed support (300) for supporting the fluidized bed body (100), the fluidized bed support (300) including an elastic support (301) and a vibration device (302) for applying vibration to the fluidized bed body (100) to enhance the fluidization effect.

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