Multi-stage adjustable air distribution plate structure for fluidized bed gasifier

Abstract

The utility model belongs to the field of gasification furnace, concretely relates to a multistage adjustable air distribution plate structure for fluidized bed gasification furnace, including fluidized bed gasification furnace body, the bottom fixed connection of fluidized bed gasification furnace body inner chamber has air distribution plate body, the top fixed connection of air distribution plate body has extension pipe, the number of extension pipe is several, and several extension pipes are equidistance around distribution, the surface of extension pipe is equipped with the air cap, the surface of air cap is equipped with the air -permeable long groove, and the surface fixed connection of air cap has the adjusting assembly. The utility model adds extension pipe, air cap and other structures on air distribution plate body, can realize the even dispersion to the airflow, promotes the material fluidization effect in fluidized bed, adds adjusting assembly and other structures on air distribution plate body, can according to different material characteristics and reaction demand, the relevant state of air cap is adjusted flexibly, realizes multistage air distribution regulation, strengthens the adaptability and precision of air distribution, helps the optimization gasification reaction efficiency and stability.

Description

Technical Field

[0001] This utility model relates to the field of gasifier technology, specifically to a multi-stage adjustable air distribution plate structure for a fluidized bed gasifier. Background Technology

[0002] During the operation of a fluidized bed gasifier, the air distribution plate is a core component, and its air distribution effect directly affects the fluidization state of the material in the furnace, the reaction efficiency, and the energy utilization rate. The uniformity and adjustability of the air distribution are the key to ensuring the stable operation of the fluidized bed. Different types of materials and different reaction stages have significantly different requirements for the intensity and distribution range of the airflow, which requires the air distribution plate to have the ability to be flexibly adjusted according to the actual working conditions.

[0003] Currently, most fluidized bed gasifiers on the market have fixed air distribution plate structures, with fixed air cap positions, air outlet angles, and ranges. These fixed air distribution plates can only meet the air distribution requirements under specific working conditions. When processing materials with different characteristics or when adjusting reaction parameters, fixed air distribution plates cannot achieve multi-stage airflow adjustment, resulting in poor material fluidization and problems such as local dead beds, coking, or over-fluidization, which affect the stability and economy of the gasification reaction. Utility Model Content

[0004] The purpose of this invention is to provide a multi-stage adjustable air distribution plate structure for fluidized bed gasifiers. This solves the problem that most air distribution plate structures for fluidized bed gasifiers on the market are fixed, with fixed positions of the air caps, air outlet angles, and ranges. These structures can only meet the air distribution requirements under specific working conditions. When processing materials with different characteristics or when adjusting reaction parameters, fixed air distribution plates cannot achieve multi-stage airflow adjustment, resulting in poor material fluidization and problems such as local dead beds, coking, or over-fluidization, which affect the stability and economy of the gasification reaction.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage adjustable air distribution plate structure for a fluidized bed gasifier, comprising a fluidized bed gasifier body, an air distribution plate body fixedly connected to the bottom of the inner cavity of the fluidized bed gasifier body, an extension pipe fixedly connected to the top of the air distribution plate body, the extension pipes being a plurality of such extension pipes and being distributed in a equidistant ring, an air cap being fitted onto the surface of the extension pipe, a permeable long groove being formed on the surface of the air cap, and an adjustment component being fixedly connected to the surface of the air cap.

[0006] Preferably, the adjustment assembly includes a ring assembly located at the top of the air distribution plate body. A transverse connecting plate is fixedly connected to the surface of the ring assembly. The inner wall of the ring assembly is fixedly connected to the surface of the air hood. Electric cylinders are fixedly connected to both sides of the bottom of the air distribution plate body. The output end of the electric cylinder extends through to the top of the air distribution plate body and is fixedly connected to the bottom of the transverse connecting plate.

[0007] Preferably, a longitudinal reinforcing plate is fixedly connected inside the ring assembly, and the longitudinal reinforcing plate is located on the front and rear sides of the top of the air distribution plate body.

[0008] Preferably, a reinforcing ring is fixedly connected to the bottom of the air distribution plate body, and the surface of the reinforcing ring is fixedly connected to the inner wall of the fluidized bed gasifier body.

[0009] Preferably, the number of the ventilation slots is four, and the four ventilation slots are located around the surface of the hood.

[0010] Preferably, the top of the extension tube is located at the top of the ventilated groove, and the extension tube is circular in shape.

[0011] Preferably, the wind cap is made of a high-temperature resistant and corrosion-resistant material, and the wind cap is made of a nickel-based alloy.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model can achieve uniform dispersion of airflow and improve the fluidization effect of materials in the fluidized bed by adding extension pipes, air caps and other structures to the air distribution plate body.

[0013] 2. By adding adjustment components and other structures to the air distribution plate body, this utility model can flexibly adjust the relevant state of the air cap according to different material characteristics and reaction requirements, realize multi-level air distribution adjustment, enhance the adaptability and precision of air distribution, and help optimize the gasification reaction efficiency and stability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a three-dimensional cross-sectional view of the air distribution plate body of this utility model; Figure 3 This is a perspective view of the ring assembly of this utility model; Figure 4 This is a perspective view of the extension tube of this utility model.

[0015] In the figure: 1. Fluidized bed gasifier body; 2. Air distribution plate body; 3. Extension pipe; 4. Air cap; 5. Ventilation groove; 61. Circular ring assembly; 62. Transverse connecting plate; 63. Electric cylinder; 7. Longitudinal reinforcing plate; 8. Reinforcing ring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 A multi-stage adjustable air distribution plate structure for a fluidized bed gasifier includes a fluidized bed gasifier body 1, an air distribution plate body 2 fixedly connected to the bottom of the inner cavity of the fluidized bed gasifier body 1, an extension pipe 3 fixedly connected to the top of the air distribution plate body 2, a number of extension pipes 3, and the extension pipes 3 are distributed in a equidistant ring, an air cap 4 is fitted on the surface of the extension pipe 3, a long ventilation groove 5 is opened on the surface of the air cap 4, and an adjustment component is fixedly connected to the surface of the air cap 4.

[0018] Please see Figure 1-4 The adjustment assembly includes a ring assembly 61, which is located at the top of the air distribution plate body 2. A transverse connecting plate 62 is fixedly connected to the surface of the ring assembly 61. The inner wall of the ring assembly 61 is fixedly connected to the surface of the air hood 4. Electric cylinders 63 are fixedly connected to both sides of the bottom of the air distribution plate body 2. The output end of the electric cylinder 63 extends through to the top of the air distribution plate body 2, and the output end of the electric cylinder 63 is fixedly connected to the bottom of the transverse connecting plate 62.

[0019] Furthermore, by setting up the annular assembly 61, the transverse connecting plate 62, and the electric cylinder 63, the electric cylinder 63 can drive the annular assembly 61 and the wind cap 4 to rise and fall as a whole when the electric cylinder 63 is working, so as to realize the convenient adjustment of the position of the wind cap 4, thereby changing the air outlet height and range of the ventilation slot 5. The operation is highly automated, the adjustment process is stable and efficient, no manual adjustment is required, the operation difficulty is reduced, and it can quickly respond to the air distribution needs under different working conditions.

[0020] Please see Figure 1-3 The ring assembly 61 is internally fixedly connected with a longitudinal reinforcing plate 7, which is located on the front and rear sides of the top of the air distribution plate body 2.

[0021] Furthermore, the longitudinal reinforcing plate 7 effectively enhances the structural strength and overall rigidity of the ring assembly 61, preventing deformation of the ring assembly 61 due to stress during lifting and adjustment or long-term use. This ensures the stability of the ring assembly 61 and the wind cap 4, extends the service life of the structure, and ensures the accuracy of air distribution adjustment.

[0022] Please see Figure 1-2A reinforcing ring 8 is fixedly connected to the bottom of the air distribution plate body 2, and the surface of the reinforcing ring 8 is fixedly connected to the inner wall of the fluidized bed gasifier body 1.

[0023] Furthermore, by setting the reinforcing ring 8, the stability of the air distribution plate body 2 can be improved, preventing the air distribution plate body 2 from loosening or shifting under the impact of airflow and vibration of equipment operation, providing a reliable support foundation for the entire air distribution structure and ensuring the stable operation of the air distribution system.

[0024] Please see Figure 1-2 There are four ventilation slots 5, which are located around the surface of the hood 4.

[0025] Furthermore, by setting four permeable grooves 5 around the surface of the air cap 4, the symmetrical distribution of the four permeable grooves 5 allows the airflow to be sprayed out evenly from all sides of the air cap 4, further improving the uniformity of airflow dispersion, avoiding the problem of uneven material fluidization caused by excessively strong or weak local airflow, and enhancing the mixing and reaction effect of materials in the fluidized bed.

[0026] Please see Figure 1-4 The top of the extension tube 3 is located inside the top of the ventilated groove 5, and the extension tube 3 is circular in shape.

[0027] Furthermore, the circular shape of the top of the extension tube 3, located at the top of the ventilating groove 5, facilitates its installation with the vent cap 4. The top position of the extension tube 3 can guide and regulate the airflow from the ventilating groove 5, reducing airflow turbulence. At the same time, it can prevent excessive material from falling into the extension tube 3 and causing blockage, thus ensuring the smooth flow of air.

[0028] Please see Figure 1-2 The wind cap 4 is made of high temperature and corrosion resistant materials, and the wind cap 4 is made of nickel-based alloy.

[0029] Furthermore, by using nickel-based alloys and other high-temperature and corrosion-resistant materials to make the air cap 4, it is possible to maintain good performance in the harsh environment of high temperature and multiple corrosive gases in the fluidized bed gasifier, effectively resist high-temperature oxidation and chemical corrosion, extend the service life of the air cap 4, reduce the frequency of equipment maintenance and replacement, and reduce production costs.

[0030] The specific implementation process of this utility model is as follows: When in use, the extension tube 3 and the wind cap 4 are in the initial state as shown in the figure. Since the top of the extension tube 3 is close to the top of the inside of the ventilation groove 5, the space inside the ventilation groove 5 that can penetrate the airflow is small. When it is necessary to increase the ventilation efficiency of the ventilation groove 5. When the electric cylinder 63 is activated, it drives the horizontal connecting plate 62 to move upward. The horizontal connecting plate 62 drives the ring assembly 61 to move upward. The ring assembly 61 drives all the air caps 4 to move upward. The air caps 4 drive the ventilation slots 5 to move upward. The distance between the top of the ventilation slot 5 and the top of the extension pipe 3 gradually increases. The space utilization rate of the ventilation slot 5 that can penetrate the air becomes higher and higher. The airflow efficiency that the extension pipe 3 and the air distribution plate body 2 can penetrate becomes higher and higher. The user can adjust the height position of the air caps 4 and the ventilation slots 5 through the electric cylinder 63 so that the air distribution plate body 2 can achieve different working efficiencies.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage adjustable air distribution plate structure for a fluidized bed gasifier, comprising a fluidized bed gasifier body (1), characterized in that: The bottom of the inner cavity of the fluidized bed gasifier body (1) is fixedly connected to the air distribution plate body (2), and the top of the air distribution plate body (2) is fixedly connected to the extension pipe (3). There are several extension pipes (3), and the several extension pipes (3) are distributed in a equidistant ring. The surface of the extension pipe (3) is covered with an air cap (4), and the surface of the air cap (4) is provided with a long air-permeable groove (5). The surface of the air cap (4) is fixedly connected to an adjustment component.

2. The multi-stage adjustable air distribution plate structure for a fluidized bed gasifier according to claim 1, characterized in that: The adjustment assembly includes a ring assembly (61), which is located at the top of the air distribution plate body (2). A transverse connecting plate (62) is fixedly connected to the surface of the ring assembly (61). The inner wall of the ring assembly (61) is fixedly connected to the surface of the air cap (4). Electric cylinders (63) are fixedly connected to both sides of the bottom of the air distribution plate body (2). The output end of the electric cylinder (63) extends through to the top of the air distribution plate body (2). The output end of the electric cylinder (63) is fixedly connected to the bottom of the transverse connecting plate (62).

3. The multi-stage adjustable air distribution plate structure for a fluidized bed gasifier according to claim 2, characterized in that: The annular assembly (61) is internally fixedly connected with a longitudinal reinforcing plate (7), which is located on the front and rear sides of the top of the air distribution plate body (2).

4. The multi-stage adjustable air distribution plate structure for a fluidized bed gasifier according to claim 1, characterized in that: A reinforcing ring (8) is fixedly connected to the bottom of the air distribution plate body (2), and the surface of the reinforcing ring (8) is fixedly connected to the inner wall of the fluidized bed gasifier body (1).

5. The multi-stage adjustable air distribution plate structure for a fluidized bed gasifier according to claim 1, characterized in that: The number of the four breathable grooves (5) is four, and the four breathable grooves (5) are located around the surface of the hood (4).

6. The multi-stage adjustable air distribution plate structure for a fluidized bed gasifier according to claim 1, characterized in that: The top of the extension tube (3) is located at the top of the ventilated long groove (5), and the extension tube (3) is circular in shape.

7. The multi-stage adjustable air distribution plate structure for a fluidized bed gasifier according to claim 1, characterized in that: The wind cap (4) is made of high temperature and corrosion resistant material, and the wind cap (4) is made of nickel-based alloy.

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