Brick body structure for expansion joint at vault of gasification furnace

Abstract

The utility model relates to an expansion joint brick body structure at the vault of a gasification furnace, and belongs to the technical field of coal chemical equipment. The expansion joint brick body structure comprises a first brick body set located on the upper side of an expansion joint and a second brick body set located on the lower side of the expansion joint, a vault connecting brick body set is stacked on the upper side of the first brick body set, and the second brick body set is stacked on a furnace body brick. The first brick body group is composed of a brick body A, a brick body B and a brick body C which are sequentially stacked from bottom to top, the brick body C is of an L-shaped structure, the brick body on the lowermost layer of the vault connecting brick body group is stacked on the upper side face of the horizontal portion of the L-shaped structure of the brick body C, and the brick body on the last but one layer falls on the upper side face of the vertical portion of the L-shaped structure of the brick body C. According to the expansion joint brick body structure, when the outermost side brick body of the expansion joint is damaged in the application process, only the bottommost layer brick body of the vault connecting brick body group needs to be withdrawn, other brick layers do not need to be detached and replaced, operation is simplified, and maintenance is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gasification furnace of coal chemical industry, concretely relates to a kind of expansion joint brick structure at gasification furnace arch top. BACKGROUND

[0002] Gasification furnace is important production place in coal chemical production process, is through burner to be made into coal slurry by coal grinding process, and the gasification furnace combustion chamber is sprayed, and the gas after combustion is cooled, recovered crude coal gas, as raw material of next process. When gasification furnace is built, in order to cope with high temperature environment in furnace during production process, expansion joint needs to be set at the connection of furnace body arch top of gasification furnace. In the production process of gasification furnace, in order to reduce raw material cost, etc., part of chemical production enterprises purchases unstable coal quality or higher ash content, which causes unstable process operation parameters or high position operation, causing the brick body of weak link such as expansion joint in furnace body, burner face, thermocouple, slag port to be ablated and washed more seriously, but the brick body of other parts of furnace body is relatively intact, when parking and overhauling, the above-mentioned brick body that is damaged more seriously needs to be replaced, especially when the brick body at arch top expansion joint is replaced, because the brick body is connected layer by layer, therefore, only the refractory brick of 2-3 rings below expansion joint can be replaced, the brick body above expansion joint needs to be replaced with arch top brick, and the replacement workload is particularly large, and there is very big safety production risk in the whole replacement process, and improper operation can cause the collapse of gasification furnace arch top. SUMMARY

[0003] To solve the problems in the prior art, the utility model patent designs a kind of expansion joint brick structure at gasification furnace arch top, to solve the problems, such as the difficulty of replacing the brick body above the expansion joint at the arch top of existing gasification furnace, high risk.

[0004] The technical scheme adopted by the utility model is: the expansion joint brick structure includes first brick group on the upper side of expansion joint and second brick group on the lower side of expansion joint, the upper side of first brick group is stacked and falls arch top connecting brick group, second brick group is stacked and falls on furnace body brick, characterized in that, the brick of the uppermost layer of first brick group is L-shaped structure, the brick of the lowermost layer of arch top connecting brick group is stacked on the upper side of the horizontal part of the L structure of the brick of the uppermost layer of first brick group, the brick of the second last layer is stacked on the upper side of the vertical part of the L-shaped structure of the brick of the uppermost layer of first brick group.

[0005] Further, the first brick group is composed of three layers of bricks A, B and C stacked from bottom to top, wherein the brick C is of L-shaped structure, the arch top connecting brick group is composed of three layers of bricks D, E and F stacked from bottom to top, the inner side end of the brick D is stacked on the upper side of the horizontal part of the L-shaped structure of the brick C, the top surface of the brick D is flush with the top surface of the vertical part of the brick C, and the brick E is pressed on the top surface of the brick C and the vertical part of the brick D.

[0006] Further, the bottom surface of the outer side end of the brick D is formed with a protrusion downward, so that the bottom surface of the brick D is of a folded surface structure, the top surface of the uppermost layer of the bricks of the second brick group is concave downward to form a folded surface structure parallel to the bottom surface of the brick D, and the uppermost layer of the bricks of the second brick group and the brick D form a bent expansion joint.

[0007] Compared with the prior art, the gasifier arch top expansion joint brick structure has the following advantages: the uppermost layer of the bricks of the first brick group is arranged as an L-shaped brick C, the horizontal part of the L-shaped brick C supports the bottom brick D of the arch top connecting brick group, when the bottom brick D of the arch top connecting brick group is replaced, the top surface of the vertical part of the brick C supports the second layer of bricks E of the arch top connecting brick group, so that only the bottom brick D needs to be removed and replaced, and the bricks above the second layer of bricks E do not need to be removed and replaced, thereby greatly reducing the workload of replacing the upper bricks of the expansion joint, reducing the economic cost of replacing and maintaining the furnace body refractory bricks, and reducing the danger of replacing the bricks. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 is a sectional view of the gasifier arch top expansion joint brick structure.

[0009] In the drawings, 1 is the first brick group, 2 is the second brick group, 3 is the arch top connecting brick group, 4 is the expansion joint, 5 is the furnace body brick, and 6 is the arch top brick. DETAILED DESCRIPTION

[0010] The utility model will be further described below in combination with the drawings and specific embodiments. The technical solutions in the embodiments of the utility model are clearly and completely described, and the described embodiments are only part of the embodiments of the utility model, rather than all. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0011] As Figure 1 The utility model discloses a kind of expansion joint brick structures at gasifier vault, and one embodiment of the utility model is designed, the expansion joint brick structure in this embodiment includes first brick group 1 located on the upside of expansion joint 4 and second brick group 2 located on the downside of expansion joint 4, and the upside of first brick group 1 is connected with vault connecting brick group 3 in cascade, and the upside of vault connecting brick group 3 is built with vault brick 6 to form the vault structure of gasifier. Second brick group 2 is connected in cascade on the furnace body brick 5 of gasifier. First brick group 1 is made of three layers of brick A, brick B and brick C connected in cascade from bottom to top, and wherein brick C is L-shaped structure. Vault connecting brick group 3 is three layers of brick D, brick E and brick F from bottom to top, and the inside end of brick D is connected in cascade on the upside of horizontal part of L-shaped structure of brick C, the top surface of brick D is flush with the top surface of vertical part of brick C, and the bottom surface of brick E is connected and pressed on the top surface of brick C and brick D, and both of them form support for brick E.

[0012] The bottom surface of the outside end of brick D is formed with protrusion downward, so that the bottom surface of brick D becomes folded surface structure, and the top surface of brick G in the uppermost layer of second brick group 2 is concave downward to form folded surface structure parallel to the bottom surface of brick D, and the expansion joint 4 between brick G in the uppermost layer of second brick group 2 and brick D is bent.

[0013] In the application process of the expansion joint brick structure of the utility model, the refractory bricks on the upper and lower sides of the opening part of the expansion joint 4 in the furnace body are most likely to be damaged. When parking and maintenance is carried out, the refractory brick on the downside of the expansion joint 4 can be directly replaced by replacing brick G, and the refractory brick on the upside of the expansion joint 4 only needs to be removed from between brick C and brick E, and since the inside of brick E is pressed on the top end of the vertical part of brick C, brick C can form support for brick E, so that the refractory brick on the upside of the expansion joint 4 can be replaced without replacing the brick layer above brick E as a whole.

[0014] The above content is only the preferred embodiment of the present application, and cannot limit the implementation range of the present application, that is, any simple equivalent change and modification made according to the claims and description of the present application still belongs to the scope covered by the present application.

Claims

1. A gasifier crown expansion joint brickwork structure comprising a first brickwork group on the upper side of the expansion joint and a second brickwork group on the lower side of the expansion joint, the upper side of the first brickwork group overlying a crown connecting brickwork group, the second brickwork group overlying a furnace brick, characterised in that, The uppermost layer of the first brick group is in L-shaped structure, the vault connecting brick group is stacked on the upper side of the horizontal part of the L-shaped structure of the uppermost layer of the first brick group, and the second layer from the bottom is stacked on the upper side of the vertical part of the L-shaped structure of the uppermost layer of the first brick group.

2. A gasifier dome top expansion joint brickwork structure according to claim 1, wherein, The first brick group is composed of three layers of brick A, brick B and brick C stacked from bottom to top, wherein the brick C is in L-shaped structure, the vault connecting brick group is composed of three layers of brick D, brick E and brick F stacked from bottom to top, the inner side end of the brick D is stacked on the upper side of the horizontal part of the L-shaped structure of the brick C, the top surface of the brick D is flush with the top surface of the vertical part of the brick C, and the brick E is pressed on the vertical part of the brick C and the top surface of the brick D.

3. A gasifier dome top expansion joint brickwork structure according to claim 2, wherein, The bottom surface of the outer side end of the brick D is formed with a protrusion downward, so that the bottom surface of the brick D is in folded surface structure, the top surface of the uppermost layer of the second brick group is concave downward to be parallel to the bottom surface of the brick D, and the uppermost layer of the second brick group and the brick D form a bent expansion joint.

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