Corundum brick lining structure for high-temperature vertical furnace

Abstract

The utility model discloses a corundum brick lining structure for a high-temperature vertical furnace, and relates to the field of refractory lining structures. The brick supporting device comprises a brick supporting plate, the pressing plate brick comprises a first pressing block and a second pressing block, the second pressing block is fixed to the side, away from the furnace wall, of the first pressing block, and a first groove is formed in the bottom of the second pressing block; the supporting brick comprises a first supporting block and a second supporting block, the second supporting block is correspondingly located below the second pressing block, one side end of the second supporting block is fixedly connected with the other side end, away from the furnace wall, of the first supporting block, and a second groove is formed in the position, corresponding to the first groove, of the top of the second supporting block. The lower portion of the fireproof brick is embedded in the second groove, and the upper end of the fireproof brick is connected into the first groove in a sliding mode. Expansion gaps are formed between the first supporting block and the brick supporting plate, between the second supporting block and the second pressing block and between the fireproof brick and the bottom wall of the first groove. The utility model has the characteristics of difficult deformation, difficult sinking, good heat insulation effect and the like in a high-temperature environment, and is suitable for long-period operation of the high-temperature vertical furnace.

Description

Technical Field

[0001] The utility model relates to the technical field of refractory lining structures, and more specifically to a corundum brick lining structure for a high-temperature vertical furnace. Background Art

[0002] High temperature vertical furnace is a vertical furnace type. It heats the furnace temperature to above 1500℃ through oxygen-enriched combustion of natural gas to convert or incinerate the medium. It is widely used in waste liquid and wastewater incineration in the petrochemical industry and conversion furnace devices in the fertilizer industry. The stable operation of this equipment determines the continuous production of the supporting facilities of the entire industry, and also directly determines the overall quality of the product.

[0003] The height of a high-temperature vertical furnace is generally about 20 meters, and the operating temperature reaches above 1500℃. Considering the thermal expansion coefficient and high-temperature load-bearing capacity of the lining material, it is necessary to set a brick support plate every few meters and leave an expansion joint. Therefore, this part is the weakest link in the entire lining. Expansion joints often cause fire to jump out, causing the brick support plate to deform and cause the lining to collapse, and even the furnace shell to burn through the furnace wall and emit open flames, which directly affects the normal operation of the equipment and poses serious safety hazards. Utility Model Content

[0004] In view of this, the utility model aims to provide a brick lining structure for the support brick plate of a high-temperature vertical furnace which has the characteristics of not being easy to deform, not being easy to sink, and having good heat insulation effect in a high-temperature environment and is suitable for long-term operation of a high-temperature vertical furnace.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A corundum brick lining structure for a high-temperature vertical furnace, comprising:

[0007] A brick supporting plate, the brick supporting plate is arranged vertically on the furnace wall and one end of the brick supporting plate is fixed on the furnace wall;

[0008] A pressing plate brick, the pressing plate brick comprising a first pressing block and a second pressing block, the first pressing block being located on the top of the brick supporting plate and having one side end thereof fixed to the inner side of the furnace wall, the second pressing block being fixed to a side of the first pressing block away from the furnace wall, and a first groove being provided at the bottom of the second pressing block;

[0009] Support bricks, the support bricks comprising a first support block and a second support block, one side end of the first support block is fixed to the furnace wall below the brick supporting plate, the second support block is correspondingly located below the second pressing block and one side end of the second support block is fixedly connected to the other side end of the first support block away from the furnace wall, and a second groove is provided on the top of the second support block corresponding to the first groove;

[0010] A fire-blocking brick, the lower portion of which is embedded in the second groove, and the upper portion of which is slidably connected in the first groove;

[0011] Expansion joints are provided between the first support block and the brick supporting plate, between the second support block and the second pressing block, and between the fire-blocking brick and the bottom wall of the first groove.

[0012] The utility model can achieve the following beneficial effects: the fire-blocking bricks fit into the first groove and the second groove, blocking the connection between the expansion joints between the pressure plate bricks and the supporting bricks, which can effectively prevent the flames from jumping along the expansion joints to the furnace shell and avoid damage to the furnace shell; and under high-temperature operating conditions, the supporting bricks expand due to heat, and the upper part of the fire-blocking bricks can slide in the first groove, which can effectively release the thermal expansion coefficient of the structure and prevent the various structures from being squeezed and damaged by each other due to thermal expansion and cracking.

[0013] Preferably, the furnace wall comprises a furnace shell and a heat insulation layer fixed inside the furnace shell, and one end of the brick support plate is inserted into the heat insulation layer, thereby enhancing the heat insulation and fireproofing effect of the furnace wall.

[0014] Preferably, the bottom of the second pressing block can extend below the brick supporting plate, thereby strengthening the connection between the pressing plate brick and the brick supporting plate and enhancing the heat insulation effect.

[0015] Preferably, the first pressing block and the second pressing block are an integrally formed structure, and the pressing plate brick structure is more solid and less prone to damage.

[0016] Preferably, the first support block and the second support block are an integrally formed structure, so that the support brick structure is more solid and not easily damaged.

[0017] Preferably, the fire barrier bricks are provided in plurality, the bottom of the second pressing block is provided with a plurality of first grooves arranged from the outside to the inside at intervals, the top of the second supporting block is provided with a second groove corresponding to each of the first grooves, the lower part of each fire barrier brick is embedded and connected in the corresponding second groove, and the upper part is slidably connected in the corresponding first groove.

[0018] Preferably, the lower side wall of the fire-blocking brick abuts against the inner groove wall of the second groove, and the upper side wall abuts against the inner groove wall of the first groove, so as to prevent the formation of gaps between the side wall of the fire-blocking brick and the inner wall of the groove and prevent fire leakage.

[0019] Preferably, the cross-section of the fire-blocking brick is rectangular, the first groove is an inverted U-shaped groove, and the second groove is a U-shaped groove symmetrically arranged with the first groove.

[0020] Preferably, the cross-section of the fire-blocking brick is H-shaped, the first groove is an inverted M-shaped groove, and the second groove is an M-shaped groove arranged symmetrically with the first groove.

[0021] Preferably, the expansion joint is filled with aluminum silicate fiber wool to cut off the heat source transfer and prevent the high temperature from being transferred to the brick supporting plate.

[0022] It can be seen from the above technical solution that, compared with the prior art, the utility model discloses a corundum brick lining structure for a high-temperature vertical furnace, which has the following beneficial effects:

[0023] 1. The utility model has good heat resistance and is not easy to deform.

[0024] 2. The utility model has a good effect of isolating the transfer of heat sources and is not easy to transfer the temperature to the brick supporting plate.

[0025] 3. When the support brick of the utility model expands due to heat, the upper part of the fire-blocking brick can slide in the first groove, which can effectively release the thermal expansion coefficient of the lining and prevent the support brick and the pressure plate brick from being squeezed and damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0027] Figure 1 This is a schematic diagram of a corundum brick lining structure for a high-temperature vertical furnace provided in Example 1 of the utility model.

[0028] Figure 2 This is a schematic diagram of a corundum brick lining structure for a high-temperature vertical furnace provided in Example 2 of the utility model.

[0029] Figure 3 This is a schematic diagram of a corundum brick lining structure for a high-temperature vertical furnace provided in Example 3 of the utility model.

[0030] In the figure: 1, brick support plate, 2, pressure brick, 21, first pressure block, 22, second pressure block, 3, support brick, 31, first support block, 32, second support block, 4, fire barrier brick, 5, expansion joint, 6, furnace wall, 61, furnace shell, 62, thermal insulation layer. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment 1:

[0034] See also Figure 1 The utility model embodiment discloses a corundum brick lining structure for a high-temperature vertical furnace, comprising:

[0035] A brick supporting plate 1, the brick supporting plate 1 is arranged vertically on the furnace wall 6 and one end of the brick supporting plate 1 is fixed on the furnace wall 6;

[0036] The pressing plate brick 2 includes a first pressing block 21 and a second pressing block 22. The first pressing block 21 is located on the top of the brick supporting plate 1 and one side end thereof is fixed to the inner side of the furnace wall 6. The second pressing block 22 is fixed to the side of the first pressing block 21 away from the furnace wall 6, and a first groove is provided at the bottom of the second pressing block 22.

[0037] The supporting brick 3 includes a first supporting block 31 and a second supporting block 32. One side end of the first supporting block 31 is fixed on the furnace wall 6 below the brick supporting plate 1. The second supporting block 32 is correspondingly located below the second pressing block 22 and one side end of the second supporting block 32 is fixedly connected to the other side end of the first supporting block 31 away from the furnace wall 6. A second groove is provided at the top of the second supporting block 32 corresponding to the first groove.

[0038] The fire-blocking brick 4 has a lower portion embedded in the second groove and an upper portion slidably connected in the first groove;

[0039] Expansion joints 5 are provided between the first support block 31 and the brick supporting plate 1, between the second support block 32 and the second pressing block 22, and between the fire-blocking brick 4 and the bottom wall of the first groove.

[0040] Among them, the pressing bricks 2, the supporting bricks 3 and the fire-blocking bricks 4 are all corundum bricks.

[0041] In order to further optimize the above technical solution, the furnace wall 6 includes a furnace shell 61 and a heat insulation layer 62 fixed on the inner side of the furnace shell 61, and one end of the brick support plate 1 is inserted into the heat insulation layer 62 to enhance the heat insulation and fireproofing effect of the furnace wall.

[0042] In order to further optimize the above technical solution, the bottom of the second pressing block 22 can extend below the brick supporting plate 1. The connection between the pressing plate brick 2 and the brick supporting plate 1 is strengthened, and the heat insulation effect is also enhanced.

[0043] In order to further optimize the above technical solution, the first pressing block 21 and the second pressing block 22 are an integrally formed structure, and the pressing plate brick structure is more solid and not easily damaged.

[0044] In order to further optimize the above technical solution, the first support block 31 and the second support block 32 are integrally formed. The support brick structure is more solid and not easy to be damaged.

[0045] In order to further optimize the above technical solution, the lower side wall of the fire-blocking brick 4 abuts against the inner side wall of the second groove, and the upper side wall abuts against the inner side wall of the first groove to prevent fire leakage.

[0046] In order to further optimize the above technical solution, the cross section of the fire-blocking brick 4 is rectangular, the first groove is an inverted U-shaped groove, and the second groove is a U-shaped groove arranged symmetrically with the first groove.

[0047] In order to further optimize the above technical solution, the expansion joint 5 is filled with aluminum silicate fiber wool to cut off the heat source transfer and prevent the high temperature from being transferred to the brick supporting plate 1. Embodiment 2:

[0048] See also Figure 2 The utility model embodiment discloses a corundum brick lining structure for a high-temperature vertical furnace, comprising:

[0049] A brick supporting plate 1, the brick supporting plate 1 is arranged vertically on the furnace wall 6 and one end of the brick supporting plate 1 is fixed on the furnace wall 6;

[0050] The pressing plate brick 2 includes a first pressing block 21 and a second pressing block 22. The first pressing block 21 is located on the top of the brick supporting plate 1 and one side end thereof is fixed to the inner side of the furnace wall 6. The second pressing block 22 is fixed to the side of the first pressing block 21 away from the furnace wall 6, and a first groove is provided at the bottom of the second pressing block 22.

[0051] The supporting brick 3 includes a first supporting block 31 and a second supporting block 32. One side end of the first supporting block 31 is fixed on the furnace wall 6 below the brick supporting plate 1. The second supporting block 32 is correspondingly located below the second pressing block 22 and one side end of the second supporting block 32 is fixedly connected to the other side end of the first supporting block 31 away from the furnace wall 6. A second groove is provided at the top of the second supporting block 32 corresponding to the first groove.

[0052] The fire-blocking brick 4 has a lower portion embedded in the second groove and an upper portion slidably connected in the first groove;

[0053] Expansion joints 5 are provided between the first support block 31 and the brick supporting plate 1, between the second support block 32 and the second pressing block 22, and between the fire-blocking brick 4 and the bottom wall of the first groove.

[0054] Among them, the pressing bricks 2, the supporting bricks 3 and the fire-blocking bricks 4 are all corundum bricks.

[0055] In order to further optimize the above technical solution, the furnace wall 6 includes a furnace shell 61 and a heat insulation layer 62 fixed on the inner side of the furnace shell 61, and one end of the brick support plate 1 is inserted into the heat insulation layer 62 to enhance the heat insulation and fireproofing effect of the furnace wall.

[0056] In order to further optimize the above technical solution, the bottom of the second pressing block 22 can extend below the brick supporting plate 1. The connection between the pressing plate brick 2 and the brick supporting plate 1 is strengthened, and the heat insulation effect is also enhanced.

[0057] In order to further optimize the above technical solution, the first pressing block 21 and the second pressing block 22 are an integrally formed structure, and the pressing plate brick structure is more solid and not easily damaged.

[0058] In order to further optimize the above technical solution, the first support block 31 and the second support block 32 are integrally formed. The support brick structure is more solid and not easy to be damaged.

[0059] In order to further optimize the above technical solution, the lower side wall of the fire-blocking brick 4 abuts against the inner side wall of the second groove, and the upper side wall abuts against the inner side wall of the first groove to prevent fire leakage.

[0060] In order to further optimize the above technical solution, the cross section of the fire-blocking brick 4 is H-shaped, the first groove is an inverted M-shaped groove, and the second groove is an M-shaped groove arranged symmetrically with the first groove.

[0061] In order to further optimize the above technical solution, the expansion joint 5 is filled with aluminum silicate fiber wool to cut off the heat source transfer and prevent the high temperature from being transferred to the brick supporting plate 1. Embodiment 3:

[0062] See also Figure 3 The utility model embodiment discloses a corundum brick lining structure for a high-temperature vertical furnace, comprising:

[0063] A brick supporting plate 1, the brick supporting plate 1 is arranged vertically on the furnace wall 6 and one end of the brick supporting plate 1 is fixed on the furnace wall 6;

[0064] The pressing plate brick 2 includes a first pressing block 21 and a second pressing block 22. The first pressing block 21 is located on the top of the brick supporting plate 1 and one side end thereof is fixed to the inner side of the furnace wall 6. The second pressing block 22 is fixed to the side of the first pressing block 21 away from the furnace wall 6, and a first groove is provided at the bottom of the second pressing block 22.

[0065] The supporting brick 3 includes a first supporting block 31 and a second supporting block 32. One side end of the first supporting block 31 is fixed on the furnace wall 6 below the brick supporting plate 1. The second supporting block 32 is correspondingly located below the second pressing block 22 and one side end of the second supporting block 32 is fixedly connected to the other side end of the first supporting block 31 away from the furnace wall 6. A second groove is provided at the top of the second supporting block 32 corresponding to the first groove.

[0066] The fire-blocking brick 4 has a lower portion embedded in the second groove and an upper portion slidably connected in the first groove;

[0067] Expansion joints 5 are provided between the first support block 31 and the brick supporting plate 1, between the second support block 32 and the second pressing block 22, and between the fire-blocking brick 4 and the bottom wall of the first groove.

[0068] Among them, the pressing bricks 2, the supporting bricks 3 and the fire-blocking bricks 4 are all corundum bricks.

[0069] In order to further optimize the above technical solution, the furnace wall 6 includes a furnace shell 61 and a heat insulation layer 62 fixed on the inner side of the furnace shell 61, and one end of the brick support plate 1 is inserted into the heat insulation layer 62 to enhance the heat insulation and fireproofing effect of the furnace wall.

[0070] In order to further optimize the above technical solution, the bottom of the second pressing block 22 can extend to below the brick supporting plate 1. The connection between the pressing plate brick 2 and the brick supporting plate 1 is strengthened, and the heat insulation effect is also enhanced.

[0071] In order to further optimize the above technical solution, the first pressing block 21 and the second pressing block 22 are an integrally formed structure, and the pressing plate brick structure is more solid and not easily damaged.

[0072] In order to further optimize the above technical solution, the first support block 31 and the second support block 32 are integrally formed. The support brick structure is more solid and not easy to be damaged.

[0073] In order to further optimize the above technical solution, the lower side wall of the fire-blocking brick 4 abuts against the inner side wall of the second groove, and the upper side wall abuts against the inner side wall of the first groove to prevent fire leakage.

[0074] In order to further optimize the above technical solution, two fire-blocking bricks 4 are arranged at intervals, two first grooves arranged from outside to inside are arranged at intervals at the bottom of the second pressing block 22, and a second groove is opened at the top of the second supporting block 32 corresponding to each first groove, and two fire-blocking bricks 4 are respectively arranged in the two first grooves, with their upper ends installed in the first grooves and their lower ends installed in the corresponding second grooves, so as to achieve double fireproof and heat-insulating effects.

[0075] In order to further optimize the above technical solution, the expansion joint 5 is filled with aluminum silicate fiber wool to cut off the heat source transfer and prevent the high temperature from being transferred to the brick supporting plate 1.

[0076] The fire-blocking brick 4 of the utility model fits inside the supporting brick 3. When the equipment is running at high temperature, the upper part of the fire-blocking brick 4 can slide in the first groove to prevent the structures from being squeezed against each other and damaged and cracked. The expansion joint 5 is filled with aluminum silicate fiber cotton, which can effectively prevent the temperature from being transferred to the supporting brick plate 1, and plays a good role in protecting the supporting brick plate 1, ensuring that the supporting brick plate 1 does not deform and sink, so that it can operate under high temperature conditions for a long time, and prolong the service life of the high-temperature vertical furnace.

[0077] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0078] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A corundum brick lining structure for a high-temperature vertical furnace, characterized in that: include: A brick supporting plate (1), the brick supporting plate (1) being arranged vertically on the furnace wall (6) and having one end fixed on the furnace wall (6); A pressing plate brick (2), the pressing plate brick (2) comprising a first pressing block (21) and a second pressing block (22), the first pressing block (21) being located on the top of the brick supporting plate (1) and having one side end thereof fixed to the inner side of the furnace wall (6), the second pressing block (22) being fixed to a side of the first pressing block (21) away from the furnace wall (6), and a first groove being formed at the bottom of the second pressing block (22); A supporting brick (3), the supporting brick (3) comprising a first supporting block (31) and a second supporting block (32), one side end of the first supporting block (31) being fixed to the furnace wall (6) below the brick supporting plate (1), the second supporting block (32) being located correspondingly below the second pressing block (22) and one side end of the second supporting block (32) being fixedly connected to the other side end of the first supporting block (31) away from the furnace wall (6), and a second groove being provided at the top of the second supporting block (32) corresponding to the first groove; A fire-blocking brick (4), wherein the lower portion of the fire-blocking brick (4) is embedded in the second groove, and the upper portion is slidably connected in the first groove; Expansion joints (5) are provided between the first support block (31) and the brick supporting plate (1), between the second support block (32) and the second pressing block (22), and between the fire-blocking brick (4) and the bottom wall of the first groove.

2. The corundum brick lining structure for a high-temperature vertical furnace according to claim 1, characterized in that: The furnace wall (6) comprises a furnace shell (61) and a heat insulation layer (62) fixed inside the furnace shell (61), and one end of the brick supporting plate (1) is inserted into the heat insulation layer (62).

3. The corundum brick lining structure for a high temperature vertical furnace according to claim 2, characterized in that: The bottom of the second pressing block (22) can extend below the brick supporting plate (1).

4. The corundum brick lining structure for a high temperature vertical furnace according to claim 1, characterized in that: The first pressing block (21) and the second pressing block (22) are an integrally formed structure.

5. The corundum brick lining structure for a high temperature vertical furnace according to claim 1, characterized in that: The first support block (31) and the second support block (32) are an integrally formed structure.

6. The corundum brick lining structure for a high temperature vertical furnace according to claim 1, characterized in that: The fire-blocking bricks (4) are provided in plurality, the bottom of the second pressing block (22) is provided with a plurality of first grooves arranged at intervals along the brick supporting plate (1), the top of the second supporting block (32) is provided with a second groove corresponding to each of the first grooves, the lower part of each of the fire-blocking bricks (4) is embedded in the corresponding second groove, and the upper part is slidably connected in the corresponding first groove.

7. The corundum brick lining structure for a high temperature vertical furnace according to claim 6, characterized in that: The lower side wall of the fire-blocking brick (4) abuts against the inner side wall of the second groove, and the upper side wall abuts against the inner side wall of the first groove.

8. The corundum brick lining structure for a high temperature vertical furnace according to claim 7, characterized in that: The fire-blocking brick (4) has a rectangular cross-section, the first groove is an inverted U-shaped groove, and the second groove is a U-shaped groove arranged symmetrically with the first groove.

9. The corundum brick lining structure for a high temperature vertical furnace according to claim 7, characterized in that: The cross section of the fire-blocking brick (4) is H-shaped, the first groove is an inverted M-shaped groove, and the second groove is an M-shaped groove arranged symmetrically with the first groove.

10. The corundum brick lining structure for a high-temperature vertical furnace according to any one of claims 1 to 9, characterized in that: The expansion joint (5) is filled with aluminum silicate fiber wool.

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