Combined gasifier cone bottom brick

Abstract

The utility model relates to the technical field of cone bottom bricks, in particular to a combined gasifier cone bottom brick which comprises a cone bottom wall brick, a cone bottom inclined surface brick and a slag notch brick, wherein a positioning convex block is arranged at the lower end of one side of the conical bottom wall brick; a positioning groove matched with the positioning convex block is formed in the lower end of one side, attached to the cone bottom wall brick, of the cone bottom inclined plane brick, and a matching clamping groove is formed in the bottom of the cone bottom inclined plane brick; a matching clamping block matched with the matching clamping groove is arranged at one end of the top of the slag notch brick. According to the combined type cone bottom brick, rapid combination can be achieved on site after prefabrication is conducted in the earlier stage and the size requirement is met, the combination efficiency of the cone bottom brick is improved, the problems that in the using process of a traditional cone bottom brick, due to factors such as thermal stress and slag erosion, a brick body is loosened and shifted are solved, and the combined type cone bottom brick is convenient to use through the reasonable structural design. And airflow scouring and mechanical vibration can be effectively resisted, and stable operation of the gasification furnace is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cone bottom bricks, in particular to a combined type cone bottom brick for a gasification furnace. Background Art

[0002] Gasifier cone bottom bricks are specialized refractory materials installed at the conical bottom of entrained-flow or fixed-bed gasifiers. They are primarily designed to withstand high-temperature slag erosion, thermal stress, and mechanical wear, ensuring long-term, stable operation. Their core functions are to protect the furnace structure, facilitate smooth slag discharge, and maintain efficient gasification reactions.

[0003] At present, the use of cone-bottom bricks is mostly combined by refractory slurry masonry. However, the masonry combination method needs to ensure that the gap is not too large due to the size deviation of the brick body. The masonry is difficult and the combination efficiency is low. Therefore, we propose a combined gasifier cone-bottom brick. Summary of the Invention

[0004] The purpose of the utility model is to provide a combined gasification furnace cone bottom brick, which has the advantage of high combination effect and solves the problem that the cone bottom bricks are mostly combined by refractory mud masonry, and the masonry combination method needs to ensure that the gap is too large due to the size deviation of the brick body, the masonry is difficult, and the combination efficiency is low.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a combined gasification furnace conical bottom brick, comprising:

[0006] Cone bottom wall bricks, cone bottom slope bricks and slag mouth bricks;

[0007] Wherein, a positioning protrusion is provided at the lower end of one side of the cone bottom wall brick;

[0008] The lower end of the cone-bottom inclined brick on the side where the cone-bottom wall brick is attached is provided with a positioning groove adapted to the positioning protrusion, and the bottom of the cone-bottom inclined brick is provided with a matching card slot;

[0009] One end of the top of the slag hole brick is provided with a matching card block adapted to the matching card slot.

[0010] Preferably, a limiting guide groove is provided on one side of the cone-bottom inclined brick, and a limiting block adapted to the limiting guide groove is provided on the other side of the cone-bottom inclined brick.

[0011] Preferably, the cone bottom wall bricks are made of spinel.

[0012] Preferably, the material of the cone-bottom sloped brick is corundum mullite.

[0013] Preferably, the slag hole brick is made of silicon carbide.

[0014] Preferably, the fire-facing surface of the cone-bottom sloped brick is higher than the fire-facing surface of the slag hole brick.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The utility model is prefabricated in the early stage to ensure the size requirements, and can be quickly assembled on site, thereby improving the assembly efficiency of the cone-bottom bricks.

[0017] 2. The utility model avoids the problems of loosening and shifting of the traditional cone-bottom bricks due to factors such as thermal stress and slag erosion during use. The combined cone-bottom bricks adopt a reasonable structural design, such as the use of an inlaid connection method, to make the connection between the bricks more compact and firm, which not only improves the overall structural strength of the cone-bottom bricks, but also effectively resists airflow erosion and mechanical vibration, thereby ensuring the stable operation of the gasifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model from the first perspective;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0020] Figure 3 This is a schematic diagram of the matching structure of the cone-bottom wall brick, the cone-bottom sloped brick and the slag-mouth brick of the utility model;

[0021] Figure 4 For this utility model Figure 3 Schematic diagram of the explosion structure.

[0022] In the figure: 1. Cone-bottom wall brick; 101. Positioning protrusion; 2. Cone-bottom inclined brick; 201. Limiting guide groove; 202. Limiting block; 203. Positioning groove; 204. Matching card slot; 3. Slag outlet brick; 301. Matching card block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0026] The cone-bottom wall brick 1, positioning protrusion 101, cone-bottom inclined brick 2, limiting guide groove 201, limiting block 202, positioning groove 203, matching card slot 204, slag mouth brick 3 and matching card block 301 components of the present application are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0027] Example 1: Please refer to Figure 1-Figure 4 As shown, the utility model provides a technical solution: a combined gasification furnace cone bottom brick, comprising:

[0028] Cone bottom wall bricks 1, cone bottom slope bricks 2 and slag mouth bricks 3;

[0029] Among them, a positioning protrusion 101 is provided at the lower end of one side of the cone bottom wall brick 1;

[0030] The lower end of the cone bottom inclined brick 2 on the side that fits the cone bottom wall brick 1 is provided with a positioning groove 203 adapted to the positioning protrusion 101, and the bottom of the cone bottom inclined brick 2 is provided with a matching card slot 204;

[0031] A matching block 301 adapted to the matching slot 204 is provided at one end of the top of the slag hole brick 3 .

[0032] A limiting guide groove 201 is provided on one side of the cone-bottom inclined brick 2 , and a limiting block 202 adapted to the limiting guide groove 201 is provided on the other side of the cone-bottom inclined brick 2 .

[0033] This technical solution: After the slag mouth brick 3 is placed around the slag discharge port of the gasifier, the cone bottom wall brick 1 is brought close to the inner wall of the bottom of the gasifier, and then the cone bottom inclined brick 2 is driven close to the cone bottom wall brick 1 and the slag mouth brick 3, and after the matching card block 301 is inserted into the matching card slot 204 and the positioning protrusion 101 is clamped into the positioning groove 203, the cone bottom wall brick 1, the cone bottom inclined brick 2 and the slag mouth brick 3 can be quickly combined, and the setting of the limiting block 202 and the limiting guide groove 201 facilitates the combination of adjacent cone bottom inclined bricks 2, so that the bottom bricks can be prefabricated in the early stage to ensure the size requirements, and can be quickly combined on site, avoiding the traditional cone bottom bricks during use due to thermal stress, slag erosion and other factors. The problems of loose bricks and displacement will occur. The combined cone bottom bricks adopt reasonable structural design, such as the mosaic connection method, to make the connection between the bricks of each part tighter and stronger. This not only improves the overall structural strength of the cone bottom bricks, but also effectively resists air flow erosion and mechanical vibration, ensuring the stable operation of the gasifier. When a part of the traditional cone bottom bricks is damaged, it often needs to be replaced as a whole, which is costly and time-consuming to repair. However, the cone bottom bricks can be quickly removed according to the damage situation. The corresponding cone bottom wall bricks 1, cone bottom slope bricks 2 and slag mouth bricks 3 can be replaced, and only the damaged parts need to be replaced without replacing the entire cone bottom structure. This greatly reduces the maintenance cost and time, and improves the utilization efficiency of the gasifier.

[0034] It should be noted that after the cone-bottom bricks are assembled, special refractory slurry can also be applied to the fitting gap as needed to further enhance their sealing properties. This is a mature conventional method in the prior art, so no further detailed description will be given here.

[0035] Example 2: Based on Example 1, the present invention is as follows Figure 1-Figure 4 As shown, it is disclosed that the material of the cone bottom wall brick 1 is spinel, the material of the cone bottom slope brick 2 is corundum mullite, and the material of the slag hole brick 3 is silicon carbide.

[0036] This technical solution: by limiting the material of the cone bottom wall bricks 1, the cone bottom inclined bricks 2 and the slag mouth bricks 3, the cone bottom wall bricks 1, in combination with the spinel material, have excellent thermal shock resistance, inhibit cracking, and the thermal expansion coefficient of the spinel is well matched, which can alleviate the thermal expansion difference between different materials, reduce interface stress, and has strong resistance to alkaline erosion, extending service life. The application of spinel bricks at the connection between the cone bottom and the furnace wall solves the problems of thermal shock, erosion, stress concentration and so on in this area through the precise matching of material properties and working conditions, which has a great impact on improving gasification. The overall reliability of the furnace plays a key role, and the slag mouth brick 3, with the help of silicon carbide material, has excellent resistance to erosion and wear, and can resist slag erosion. Silicon carbide bricks have the advantages of high hardness, high thermal conductivity and erosion resistance, which are very suitable for the harsh working conditions of the slag mouth connection. The cone bottom slope brick 2, with the help of corundum mullite material, has a better resistance to acidic slag. The combined design of spinel bricks, silicon carbide bricks and corundum mullite bricks can achieve comprehensive performance of erosion resistance, wear resistance and thermal stability in a high-temperature slag environment through the complementary material properties.

[0037] Example 3: Based on Example 1, the present invention is as follows Figure 1-Figure 4 As shown, it is disclosed that the fire-facing surface of the cone-bottom inclined brick 2 is higher than the fire-facing surface of the slag hole brick 3.

[0038] The technical solution is to limit the height of the fire-facing surface of the cone bottom inclined brick 2 and the slag opening brick 3. This is because the coal slag passes through the fire-facing surface of the cone bottom inclined brick 2 and the slag opening brick 3. Under the corrosion of water coal slag, the height of the fire-facing surface of the cone bottom inclined brick 2 is higher than the fire-facing surface of the slag opening brick 3. In this way, an integrated structure is formed, which can ensure that the cone bottom inclined brick 2 and the slag opening brick 3 are corroded by water coal slag at the same time, thereby improving the service life of the cone bottom inclined brick 2 and the slag opening brick 3, and preventing the slag opening brick 3 from being corroded with the cone bottom inclined brick after replacement. The working surface of the facing brick 2 has an incremental step, which causes the mortar joint and the slag mouth brick 3 to be damaged prematurely (in the previous operating cycle of the slag mouth brick 3, the cone bottom brick has a certain degree of erosion and the vertical thickness has decreased. When the slag mouth brick 3 is replaced alone, the fire-facing working surface of the uppermost ring of the slag mouth brick 3 is higher than the working surface of the cone bottom brick. It will be rapidly eroded by the high-speed airflow carrying slag, and slag is easily accumulated here, which accelerates the erosion of the mortar joint between the fire-facing surface of the slag mouth brick 3 and the cone bottom brick, resulting in premature damage to the newly replaced slag mouth brick 3).

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the scope of protection of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A combined gasification furnace conical bottom brick, characterized in that: include: Cone bottom wall bricks (1), cone bottom slope bricks (2) and slag hole bricks (3); Wherein, a positioning protrusion (101) is provided at the lower end of one side of the cone-bottom wall brick (1); The lower end of the cone-bottom inclined brick (2) on the side that fits the cone-bottom wall brick (1) is provided with a positioning groove (203) adapted to the positioning protrusion (101), and the bottom of the cone-bottom inclined brick (2) is provided with a matching slot (204); One end of the top of the slag hole brick (3) is provided with a matching card block (301) adapted to the matching card slot (204).

2. The combined gasification furnace conical bottom brick according to claim 1, characterized in that: A limiting guide groove (201) is provided on one side of the cone-bottom inclined brick (2), and a limiting block (202) adapted to the limiting guide groove (201) is provided on the other side of the cone-bottom inclined brick (2).

3. The combined gasification furnace conical bottom brick according to claim 1, characterized in that: The material of the cone bottom wall brick (1) is spinel.

4. The combined gasification furnace conical bottom brick according to claim 1, characterized in that: The material of the cone bottom slope brick (2) is corundum mullite.

5. The combined gasification furnace conical bottom brick according to claim 1, characterized in that: The slag hole brick (3) is made of silicon carbide.

6. The combined gasification furnace conical bottom brick according to claim 1, characterized in that: The fire-facing surface of the cone-bottom inclined brick (2) is higher than the fire-facing surface of the slag hole brick (3).

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