Gasifier cone bottom structure

Abstract

The utility model discloses a gasification furnace cone bottom structure relates to gasification furnace equipment technical field, including gasification furnace body, the bottom of gasification furnace body is conical bottom surface structure, the inside of gasification furnace body is paved with cone bottom brick, the inside wall of cone bottom brick is paved with cinder hole brick, and the cinder hole brick includes first cinder hole brick, second cinder hole brick and third cinder hole brick that are sequentially attached and laid from top to bottom, the distance of the inner wall surface of first cinder hole brick to gasification furnace body center axis is greater than the distance of second cinder hole brick inner wall surface to gasification furnace body center axis, and the inner wall surface of second cinder hole brick and third cinder hole brick forms the inclined plane of gradually expanding from top to bottom, by reducing the size of cinder hole, cinder hole brick can bear longer time's corrosion under the same condition, and the layered setting of first cinder hole brick, second cinder hole brick and third cinder hole brick makes the formation of ladder type structure to the cinder hole, can more effectively disperse the impact force of slag flow to cinder hole brick, reduces the wear and tear of single cinder hole brick, prolongs the service life of cinder hole brick.

Description

TECHNICAL FIELD

[0001] The utility model relates to gasification furnace equipment technical field more specifically relates to a gasification furnace cone bottom structure. BACKGROUND

[0002] In the operation process of the gasification furnace, the cone bottom structure and the slag port brick are the key parts of the gasification furnace liquid coal slag and the reaction synthesis gas outlet, and the design thereof has a direct influence on the stability, durability and maintenance efficiency of the furnace body, and they directly influence the operation efficiency, safety and maintenance cost of the gasification furnace.

[0003] The existing slag port brick slag outlet is provided with a straight cylinder design, and the structure setting may cause the coal slag and gas to directly impact the cylinder wall, especially in the slag outlet area, which may intensify the scouring and wear of the slag port brick and the cylinder, and shorten the service life; meanwhile, the size of the existing slag port brick slag outlet is large, and the larger slag port size means that the area through by the coal slag and gas is larger, and the flow rate may be faster, and due to the increase of the flow and flow rate of the coal slag and gas, the wear rate of the slag port brick is accelerated, which causes more frequent maintenance and replacement, and increases the maintenance cost and downtime.

[0004] Therefore, how to provide a gasification furnace cone bottom structure capable of enhancing the wear resistance of the bottom of the gasification furnace body, reducing the wear caused by the flow of the slag, and prolonging the service life is a problem to be solved by those skilled in the art. INVENTION CONTENTS

[0005] Therefore, the utility model provides a gasification furnace cone bottom structure, which aims at solving the above technical problems

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A gasification furnace cone bottom structure, comprising a gasification furnace body, the bottom of the gasification furnace body is a conical bottom surface structure, the inner side of the gasification furnace body is paved with a cone bottom brick, the inner side wall of the cone bottom brick is paved with a slag port brick, the slag port brick comprises a first slag port brick, a second slag port brick and a third slag port brick which are sequentially and closely paved from top to bottom, the distance from the inner wall surface of the first slag port brick to the center axis of the gasification furnace body is greater than the distance from the inner wall surface of the second slag port brick to the center axis of the gasification furnace body, and the inner wall surfaces of the second slag port brick and the third slag port brick form a gradually expanding inclined surface from top to bottom.

[0008] By the technical scheme, the utility model provides a gasification furnace cone bottom structure, the distance of the inner wall surface of first slagging-off brick to the center axis of the gasification furnace body is greater than the distance of the inner wall surface of second slagging-off brick to the center axis of the gasification furnace body, relatively, the size of the slagging-off port is reduced, the smaller size of the slagging-off port means that the flow rate of coal slag and gas is relatively low, this helps to slow down the wear of slagging-off brick, by reducing the size of the slagging-off port, the slagging-off brick can withstand longer erosion under the same condition, which is equivalent to increasing the erosion resistance size, thereby improving the overall erosion resistance of the slagging-off port, the layered structure of first slagging-off brick, second slagging-off brick and third slagging-off brick is arranged, so that the slagging-off port forms a stepped structure, which can more effectively disperse the impact force of slag flow on the slagging-off brick, reduce the wear of single slagging-off brick and prolong the service life of the slagging-off brick.

[0009] Preferably, in the above-mentioned gasification furnace cone bottom structure, the first slagging-off brick, the second slagging-off brick and the third slagging-off brick are all one layer. This structure arrangement only needs to remove the three-ring slagging-off brick during later maintenance and replacement, thereby reducing the construction intensity and improving the maintenance efficiency.

[0010] Preferably, in the above-mentioned gasification furnace cone bottom structure, the inner wall surface of the first slagging-off brick is parallel to the center axis of the gasification furnace body, and the inner wall surface of the second slagging-off brick and the third slagging-off brick has an angle with the center axis of the gasification furnace body. This structure form makes the slagging-off port form a stepped structure, optimizes the slag flow path, reduces the direct impact and wear of the slag on the cone bottom, and helps to guide the smooth flow of the slag, reducing the blockage and wear.

[0011] Preferably, in the above-mentioned gasification furnace cone bottom structure, the bottom wall of the third slagging-off brick has a downwardly extending boss, and the outer wall surface of the boss is attached to the bottom support plate of the gasification furnace body. The boss can enhance the support and stability of the cone bottom, while ensuring the sealing performance.

[0012] Preferably, in the above-mentioned gasification furnace cone bottom structure, the inner wall of the gasification furnace body is paved with wall bricks. The wall bricks can protect the gasification furnace body from erosion by high temperature and corrosive gas, thereby prolonging the service life of the furnace body.

[0013] Preferably, in the above-mentioned gasification furnace cone bottom structure, the cavity between the bottom of the gasification furnace body, the wall bricks and the cone bottom bricks is filled with castable. The castable can improve the sealing performance and integrity of the structure, reduce heat loss and slag erosion.

[0014] Preferably, in the above-mentioned gasification furnace cone bottom structure, there is a refractory fiber felt between the castable and the outer wall surface of the cone bottom brick. The refractory fiber felt can provide additional heat insulation and protection, reduce heat loss and improve the service life of the refractory material.

[0015] Compared with the prior art, the gasification furnace cone bottom structure has the following beneficial effects:

[0016] 1、The structure and arrangement of the utility model increase the scouring surface of the slag port brick, improve the erosion resistance and service life of the slag port brick, and meet the periodic use requirements.

[0017] 2、The utility model adopts the first, second and third slag port bricks which are sequentially attached and laid from top to bottom, forms a gradually expanding inclined surface, disperses the impact force of the slag flow on the slag port brick, and reduces the wear of the single slag port brick.

[0018] 3、The bottom wall of the third slag port brick is integrally formed with a downwardly extending boss which is attached to the bottom support plate of the gasification furnace body, enhances the support and stability of the cone bottom, and helps to ensure the sealing performance and prevent coal slag and gas leakage. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative labor.

[0020] Figure 1 The accompanying drawings are structural schematic diagrams of the gasification furnace cone bottom structure provided by the utility model.

[0021] Among them:

[0022] 1-gasification furnace body;

[0023] 11-bottom support plate;

[0024] 2-cone bottom brick;

[0025] 3-first slag port brick;

[0026] 4-second slag port brick;

[0027] 5-third slag port brick;

[0028] 6-boss;

[0029] 7-wall brick;

[0030] 8-castable;

[0031] 9-brick joint. DETAILED DESCRIPTION

[0032] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0033] Referring to the drawings Figure 1 The utility model discloses a gasification furnace cone bottom structure, including gasification furnace body 1, the bottom of gasification furnace body 1 is conical bottom surface structure, the inside of gasification furnace body 1 is paved with multiring cone bottom brick 2, the inside wall of cone bottom brick 2 is paved with slag port brick, and its characterized in that, the slag port brick includes first slag port brick 3, second slag port brick 4 and third slag port brick 5 that are sequentially attached and paved from top to bottom, the distance from the inner wall surface of first slag port brick 3 to the center axis of gasification furnace body 1 is greater than the distance from the inner wall surface of second slag port brick 4 to the center axis of gasification furnace body 1, and the inner wall surface of second slag port brick 4 and third slag port brick 5 forms gradually expanding inclined plane from top to bottom.

[0034] In order to further optimize the above technical scheme, the first slag port brick 3, the second slag port brick 4 and the third slag port brick 5 are all one layer.

[0035] In order to further optimize the above technical scheme, as Figure 1 The cross section of the first slag port brick 3 is a right trapezoid, by adjusting the size and shape of the first slag port brick 3, the number of ash joints inside the gasification furnace body 1 is reduced, the reduction of the number of ash joints reduces the risk of direct erosion of coal ash and coal gas, and at the same time, the durability and maintenance efficiency of the cone bottom and the slag port are improved.

[0036] In order to further optimize the above technical scheme, as Figure 1 By adjusting the size of the first slag port brick 3 and the arrangement form of the cone bottom brick, the number of brick joints 9 is reduced, and the potential erosion points are further reduced, and the number of brick joints 9 in the embodiment is 4.

[0037] In order to further optimize the above technical scheme, as Figure 1 The size of the slag port at the first slag port brick is lower than the size of the slag port at the second slag port brick and the third slag port brick, and the purpose of the structure is to increase the erosion-resistant size of the slag port brick, and with the wear of the slag port, the size will gradually increase to 838mm in the prior art, or even larger, thereby prolonging the service life of the slag port. In the embodiment, the size of the slag port at the first slag port brick is 787mm.

[0038] To further optimize the above technical solution, the inner wall surface of the first slag port brick 3 is parallel to the central axis of the gasification furnace body 1, and the inner wall surface of the second slag port brick 4 and the third slag port brick 5 has an angle with the central axis of the gasification furnace body 1.

[0039] To further optimize the above technical solution, the bottom wall of the third slag port brick 5 is integrally formed with a downwardly extending boss 6, and the outer wall surface of the boss 6 is attached to the end surface of the bottom support plate 11 of the gasification furnace body 1.

[0040] To further optimize the above technical solution, the inner wall of the gasification furnace body 1 is paved with wall bricks 7.

[0041] To further optimize the above technical solution, the cavity between the conical bottom inner wall of the gasification furnace body 1 and the wall bricks 7 and the cavity between the conical bottom inner wall of the gasification furnace body 1 and the conical bottom brick 2 are filled with castable 8.

[0042] To further optimize the above technical solution, the outer wall surface of the conical bottom brick 2 has a refractory fiber felt.

[0043] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between various embodiments can be referred to each other. For the device disclosed by the embodiments, since it corresponds to the method disclosed by the embodiments, the description is relatively simple, and the related parts can be referred to the method part.

[0044] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application should not be limited to the embodiments shown herein, but should be consistent with the widest scope of principles and novel features disclosed herein.

Claims

1. A gasifier cone bottom structure comprising a gasifier body (1), the bottom of the gasifier body (1) is a conical bottom surface structure, the inner side of the gasifier body (1) is paved with multi-ring cone bottom bricks (2), the inner side wall of the cone bottom brick (2) is paved with a slag port brick, characterized in that, The slag notch brick comprises a first slag notch brick (3), a second slag notch brick (4) and a third slag notch brick (5) which are sequentially attached and laid from top to bottom, the distance from the inner wall surface of the first slag notch brick (3) to the central axis of the gasification furnace body (1) is greater than the distance from the inner wall surface of the second slag notch brick (4) to the central axis of the gasification furnace body (1), and the inner wall surfaces of the second slag notch brick (4) and the third slag notch brick (5) form a gradually expanding inclined surface from top to bottom.

2. A conical bottom structure for a gasifier according to claim 1, characterized in that The first slag notch brick (3), the second slag notch brick (4) and the third slag notch brick (5) are all one layer.

3. A conical bottom structure for a gasifier according to claim 1, wherein The inner wall surface of the first slag notch brick (3) is parallel to the central axis of the gasification furnace body (1), and the inner wall surfaces of the second slag notch brick (4) and the third slag notch brick (5) have an angle with the central axis of the gasification furnace body (1).

4. A conical bottom structure for a gasifier according to claim 3, wherein The bottom wall of the third slag notch brick (5) is integrally formed with a downwardly extending boss (6), and the outer wall surface of the boss (6) is attached to the end surface of the bottom support plate (11) of the gasification furnace body (1).

5. A conical bottom structure for a gasifier according to claim 1, wherein The inner wall of the gasification furnace body (1) is paved with wall bricks (7).

6. A conical bottom structure for a gasifier according to claim 5, characterized in that The cavities between the conical bottom inner wall of the gasification furnace body (1) and the wall bricks (7) and between the conical bottom inner wall of the gasification furnace body (1) and the conical bottom brick (2) are filled with castable (8).

7. A conical bottom structure for a gasifier according to claim 1, wherein The outer wall surface of the conical bottom brick (2) is provided with refractory fiber felt.

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