Anti-coking cloth air distribution plate structure for biomass gasifier

Abstract

The utility model discloses a kind of anti-coking cloth air distribution plate structures for biomass gasifier, it is related to the technical field of biomass gasifier, including gasifier body, the inside of gasifier body is installed with cloth air distribution plate assembly, cloth air distribution plate assembly includes first plate body, second plate body and third plate body, the side middle part of first plate body is fixedly connected with the side of second plate body, in the utility model, by first plate body, second plate body and third plate body form stepped cloth air distribution plate, guide material to flow to slagging-off port, prevent the surface coking of cloth air distribution plate assembly, simultaneously, air pipe will wind be introduced into the inside of hood shell, blow from air outlet, air outlet is obliquely arranged, so that airflow is radiated to blow material, avoid local airflow dead angle to cause residue, the setting of edge sawtooth, form turbulent flow when airflow passes, enhance the scouring of material around hood shell, prevent ash bonding.

Description

Technical Field

[0001] This utility model relates to the field of biomass gasification furnace technology, and in particular to an anti-coking cloth air plate structure for a biomass gasification furnace. Background Technology

[0002] Biomass gasification refers to the process of pressing biomass raw materials into shapes or simply crushing them and then feeding them into a gasifier. Under anaerobic conditions, the polymers of biomass undergo pyrolysis, oxidation, reduction, and reforming reactions to obtain combustible gas. The air distribution plate is a key component in the gasifier.

[0003] For example, CN217628254U discloses a conical channel air distribution plate device for a biomass gasifier, including a gasifier body, an air distribution plate inside the gasifier body, a number of air distribution channels on the air distribution plate, the air distribution channels are conical channel structures that are narrow at the top and wide at the bottom, and a slag receiving plate is provided at the bottom of the gasifier body, the slag receiving plate is fixedly connected to the air distribution plate by a connecting rod.

[0004] In the prior art, flat air distribution plates are prone to causing materials to stagnate on the surface of the air distribution plate, especially in corners or areas with weak airflow, forming accumulations. Because the accumulated materials cannot be disturbed by the airflow in time, they are prone to softening and sticking due to high temperature, forming lumps. In severe cases, they can block the air distribution holes and disrupt the uniformity of airflow. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art that flat air distribution plates easily cause materials to stagnate on the surface of the air distribution plate, forming accumulations in corners or areas with weak airflow, which soften and stick together due to high temperature, forming coke lumps. Therefore, this invention proposes an anti-coking air distribution plate structure for biomass gasification furnaces.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an anti-coking air distribution plate structure for a biomass gasification furnace, comprising a gasification furnace body, an air distribution plate assembly installed inside the gasification furnace body, the air distribution plate assembly comprising a first plate, a second plate and a third plate, the middle of one side of the first plate being fixedly connected to one side of the second plate, the middle of one side of the second plate being fixedly connected to one side of the third plate, the side of the second plate being inclined, the first plate having the same structure as the second plate, air distribution openings being provided on the top sides of the first plate, the second plate and the third plate, an anti-coking mechanism being provided at one end of the air distribution opening, the anti-coking mechanism comprising an air cap shell, an air outlet being provided on the outer side of the air cap shell.

[0007] Preferably, the top of the hood shell is fixedly connected to the brim, and the side of the brim is provided with edge serrations.

[0008] Preferably, the air outlets are distributed in a ring on the side of the hood housing, and the air outlets are set at an angle of 30°.

[0009] Preferably, an air duct is fitted inside the hood housing, and one end of the air duct is fixedly connected to the air distribution plate assembly.

[0010] Preferably, a positioning collar is fitted on the outer side of the wind cap housing, one end of the positioning collar is fixedly connected to the air distribution plate assembly, the inner ring surface of the positioning collar is provided with a positioning groove, a positioning protrusion is engaged inside the positioning groove, and the positioning protrusion is fixedly connected to the outer surface of the wind cap housing.

[0011] Preferably, an annular boss is fixedly connected to the outer surface of the wind cap housing, and one side of the annular boss abuts against the top of the positioning collar.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, a stepped air distribution plate is formed by the first plate, the second plate and the third plate to guide the material to flow towards the slag discharge port, preventing coking on the surface of the air distribution plate assembly. At the same time, the air duct introduces air into the air cap housing and blows air from the air outlet. The air outlet is set at an angle so that the airflow is radially blowing the material, avoiding dead air angles in the local airflow that cause slag accumulation. The serrated edge setting makes the airflow form turbulence when it passes through, enhancing the scouring of the material around the air cap housing and preventing ash and slag from sticking together.

[0014] 2. In this utility model, the bottom end of the wind cap housing is inserted between the positioning collar and the air duct, and the positioning protrusion is inserted into the interior of the positioning groove to fix the position of the wind cap housing. An annular protrusion is provided on the outside of the wind cap housing. After the wind cap housing is fixed, the annular protrusion covers the top of the positioning collar to prevent the material on the surface of the air distribution plate assembly from seeping into the connection gap. Attached Figure Description

[0015] Figure 1 This utility model provides a three-dimensional structural diagram of an anti-coking cloth air plate structure for a biomass gasification furnace;

[0016] Figure 2 This utility model provides a schematic diagram of the connection structure of the air distribution plate assembly for an anti-coking air distribution plate structure used in a biomass gasification furnace.

[0017] Figure 3 This utility model provides a schematic diagram of the connection structure of the anti-coking mechanism for an anti-coking cloth air plate structure used in a biomass gasification furnace.

[0018] Figure 4 This utility model provides a disassembly diagram of the anti-coking mechanism of an anti-coking cloth air plate structure for a biomass gasifier;

[0019] Figure 5 This utility model presents a schematic diagram of the internal planar structure of an anti-coking mechanism for a biomass gasification furnace using an anti-coking cloth air plate structure.

[0020] Legend: 1. Gasifier body; 2. Air distribution plate assembly; 21. First plate; 22. Second plate; 23. Third plate; 24. Air distribution outlet; 3. Anti-coking mechanism; 31. Air cap shell; 32. Air outlet; 33. Edge serration; 34. Cap brim; 35. Annular boss; 36. Air duct; 37. Positioning collar; 38. Positioning groove; 39. Positioning protrusion. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: As Figures 1-5 As shown, this utility model provides an anti-caking air distribution plate structure for a biomass gasification furnace, including a gasification furnace body 1. An air distribution plate assembly 2 is installed inside the gasification furnace body 1. The air distribution plate assembly 2 includes a first plate 21, a second plate 22, and a third plate 23. The middle of one side of the first plate 21 is fixedly connected to one side of the second plate 22, and the middle of one side of the second plate 22 is fixedly connected to one side of the third plate 23. The side of the second plate 22 is inclined. The first plate 21 and the second plate 23 are... 2. The structures are consistent. The top sides of the first plate 21, the second plate 22 and the third plate 23 are all provided with air distribution ports 24. One end of the air distribution port 24 is provided with an anti-coking mechanism 3. The anti-coking mechanism 3 includes a wind cap shell 31. An air outlet 32 ​​is provided on the outer side of the wind cap shell 31. A brim 34 is fixedly connected to the top of the wind cap shell 31. The side of the brim 34 is provided with edge serrations 33. The air outlets 32 are distributed in a ring on the side of the wind cap shell 31. The air outlets 32 are inclined at an angle of 30°.

[0024] The air distribution plate assembly 2 is composed of a first plate 21, a second plate 22, and a third plate 23 forming a stepped air distribution plate. The first plate 21, the second plate 22, and the third plate 23 are arranged in sequence with a drop. The sides of the second plate 22 and the third plate 23 are inclined to guide the material to flow towards the slag discharge port. Air is distributed through multiple air distribution ports 24 to prevent coking on the surface of the air distribution plate assembly 2. An anti-coking mechanism 3 is installed at each air distribution port 24. The air duct 36 guides the air out of the air distribution port 24 into the air cap housing 31 and blows air from the air outlet 32. The air outlet 32 ​​is distributed in a ring on the air cap housing 31 and is inclined in all directions so that the airflow radiates to sweep the material, avoiding local airflow dead corners that cause slag accumulation. The edge of the cap 34 is provided with edge serrations 33, which form turbulence when the airflow passes through, enhances the scouring of the material around the air cap housing 31, and prevents ash and slag from sticking together.

[0025] Example 2: Figures 1-5 As shown, an air duct 36 is sleeved on the inner side of the hood housing 31, and one end of the air duct 36 is fixedly connected to the air distribution plate assembly 2; a positioning collar 37 is sleeved on the outer side of the hood housing 31, and one end of the positioning collar 37 is fixedly connected to the air distribution plate assembly 2. A positioning groove 38 is opened on the inner ring surface of the positioning collar 37, and a positioning protrusion 39 is engaged inside the positioning groove 38. The positioning protrusion 39 is fixedly connected to the outer surface of the hood housing 31; an annular boss 35 is fixedly connected to the outer surface of the hood housing 31, and one side of the annular boss 35 abuts against the top of the positioning collar 37.

[0026] The overall effect of this embodiment is that the bottom end of the hood housing 31 is inserted into the space formed between the positioning collar 37 and the air duct 36, the positioning protrusion 39 contacts the positioning groove 38, the positioning protrusion 39 is inserted into the interior of the positioning groove 38, and the position of the hood housing 31 is fixed. An annular protrusion 35 is provided on the outside of the hood housing 31. After the hood housing 31 is fixed, the annular protrusion 35 covers the top of the positioning collar 37 to prevent the material on the surface of the air distribution plate assembly 2 from seeping into the connection gap.

[0027] The method of use and working principle of this device: Insert the wind cap housing 31 between the positioning collar 37 and the air duct 36. The positioning protrusion 39 is inserted into the interior of the positioning groove 38 to fix the position of the wind cap housing 31. The annular protrusion 35 covers the connection between the positioning collar 37 and the wind cap housing 31 to prevent material from seeping into the connection gap. The air distribution plate assembly 2 is composed of the first plate 21, the second plate 22 and the third plate 23 to form a stepped air distribution plate. Multiple air distribution ports 24 are opened to distribute air. The air duct 36 guides the air into the interior of the wind cap housing 31 and blows it out from the air outlet 32. The air outlet 32 ​​is inclined to all sides so that the airflow is radial and sweeps the material. The edge of the cap 34 is provided with edge serrations 33 to prevent ash and slag from sticking together.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A structure for an anti-caking cloth air plate for a biomass gasifier, comprising a gasifier body (1), characterized in that: The gasifier body (1) is equipped with an air distribution plate assembly (2). The air distribution plate assembly (2) includes a first plate (21), a second plate (22) and a third plate (23). The middle part of one side of the first plate (21) is fixedly connected to one side of the second plate (22). The middle part of one side of the second plate (22) is fixedly connected to one side of the third plate (23). The side of the second plate (22) is inclined. The structure of the first plate (21) and the second plate (22) is the same. The top sides of the first plate (21), the second plate (22) and the third plate (23) are all provided with air distribution ports (24). One end of the air distribution port (24) is provided with an anti-coking mechanism (3). The anti-coking mechanism (3) includes a wind cap shell (31). An air outlet (32) is provided on the outside of the wind cap shell (31).

2. The anti-coking air plate structure for a biomass gasification furnace according to claim 1, characterized in that: The top of the hood shell (31) is fixedly connected to the brim (34), and the side of the brim (34) is provided with edge serrations (33).

3. The anti-coking air plate structure for a biomass gasification furnace according to claim 1, characterized in that: The air outlets (32) are distributed in a ring on the side of the wind cap housing (31), and the air outlets (32) are set at an angle of 30°.

4. The anti-coking air plate structure for a biomass gasification furnace according to claim 1, characterized in that: The inner side of the hood housing (31) is fitted with a duct (36), and one end of the duct (36) is fixedly connected to the air distribution plate assembly (2).

5. The anti-coking air duct structure for a biomass gasification furnace according to claim 1, characterized in that: A positioning collar (37) is fitted on the outer side of the wind cap housing (31). One end of the positioning collar (37) is fixedly connected to the air distribution plate assembly (2). A positioning groove (38) is opened on the inner ring surface of the positioning collar (37). A positioning protrusion (39) is engaged inside the positioning groove (38). The positioning protrusion (39) is fixedly connected to the outer surface of the wind cap housing (31).

6. The anti-coking air duct structure for a biomass gasification furnace according to claim 1, characterized in that: An annular boss (35) is fixedly connected to the outer surface of the hood housing (31), and one side of the annular boss (35) abuts against the top of the positioning collar (37).

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