Thermal shock resistant brick wall structure of ultrahigh-temperature carbon furnace
By adopting a refractory horizontal wall and column structure in a carbon roasting furnace, combining reinforcement, heat insulation and refractory layers, strengthening core columns and filling cotton are installed, the problems of loosening and thermal energy leakage in the high and low temperature cycles are solved, and the problems of horizontal walls are improved. It has thermal shock resistance and thermal efficiency, extending service life.
Patent Information
- Application Number
- CN202323396474.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-12
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2033-12-12
AI Technical Summary
The cross walls of existing carbon roasters are prone to temperature gradients, loosening, collapse and thermal energy leakage during high and low temperature cycles, resulting in reduced thermal efficiency, poor product quality and short service life.
Adopt fire-resistant horizontal wall and column structure, including reinforcement layer, thermal insulation layer and refractory layer, reinforced core column and core column filling cotton, as well as locking brick filling cotton and locking brick to enhance the overall stability and heat resistance of the wall Impact performance.
It effectively reduces the wall temperature change, improves thermal shock resistance and thermal efficiency, extends service life, and avoids cracking and thermal energy leakage.
Smart Images
Figure CN222364392U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a carbon roasting furnace, and in particular to a horizontal wall masonry structure of the carbon roasting furnace. Background Art
[0002] Carbon roasting is a thermal equipment that heats various carbon products formed under high pressure at a specified roasting temperature under air-tight conditions to improve the electrical and thermal conductivity of the products and enhance the strength of the products. The carbon roasting furnace mainly includes side walls, fire channel walls and cross walls, and the cross wall is the wall that bears the most severe thermal shock.
[0003] In the process of carbon roasting, the carbon furnace, especially the cross wall, will repeatedly heat up to 1250℃-1300℃ and cool down to 20℃-30℃ according to the process. Therefore, each loading and unloading operation will cause serious thermal shock to the carbon furnace fireway wall and cross wall. The existing cross wall is mostly made of traditional refractory bricks and mud. In the continuous cycle of high and low temperatures, the cross wall will produce a huge temperature gradient, which will not only cause gaps between the wall blocks, the wall will become loose and prone to wall collapse, as well as reduced sealing and heat leakage, but also produce internal stress and deformation inside the brick body. These internal stresses and deformations will cause the bricks themselves to loosen and crack. The looseness of the carbon furnace wall and the looseness of the blocks will not only affect the thermal efficiency of the carbon furnace, increase heat loss, and reduce the quality of roasted products, but also reduce the service life of the carbon furnace and increase the frequency of medium and major repairs of the wall. Utility Model Content
[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the utility model is to provide an ultra-high temperature carbon furnace heat-shock resistant brick wall structure with good overall wall stability and high heat-shock resistance.
[0005] In order to solve the above technical problems, the utility model of the ultra-high temperature carbon furnace heat shock resistant brick wall structure includes a refractory cross wall and a refractory column, wherein the refractory cross wall is located between two adjacent refractory columns, and the refractory column is built by refractory column bricks, and a reinforcement layer, a heat insulation layer and a refractory layer are sequentially arranged on the hot sides of the refractory column bricks from the inside to the outside; the core of the refractory column brick is provided with a through brick core hole, and a reinforcing core column and a core column filling are arranged in the brick core hole. Cotton, the reinforced core column is buried in the core column filling cotton; column brick slots are also arranged at both ends of the refractory column bricks; the refractory cross wall is built with refractory wall bricks, and reinforcing layers, insulation layers and refractory layers are arranged in sequence from the inside to the outside on both hot sides of the refractory wall bricks, and wall brick slots are arranged at the connecting ends of the refractory wall bricks and the refractory column bricks, and locking brick filling cotton and locking bricks are arranged in the opposite wall brick slots and column brick slots, and the locking bricks are buried in the locking brick filling cotton.
[0006] In the above structure, firstly, since reinforcing layers, thermal insulation layers and refractory layers are arranged in sequence from the inside to the outside on both hot sides of the refractory wall bricks and refractory column bricks, on the one hand, the arrangement of such reinforcing layers, thermal insulation layers and refractory layers can effectively enhance the high temperature resistance and thermal insulation performance of the wall, so that the carbon furnace can not only withstand higher baking temperatures, but also effectively reduce the heat energy loss in the furnace, which is beneficial to ensure the quality of the baked carbon products; on the other hand, the structure has excellent thermal insulation performance, which reduces the temperature variation of the brick blocks and the temperature gradient of the block core material during the frequent heating and cooling of the furnace cavity, stabilizes the refractory insulation performance of the wall blocks, improves the thermal shock resistance of the blocks, and extends the service life of the blocks themselves. In addition, since a reinforced core column and core column filling cotton are arranged in the core hole of the refractory column brick, the reinforced core column can support the entire wall, improve the overall stability and structural rigidity of the wall, and also make the overall structural property of the refractory cross wall between the refractory columns better, and filling the core column filling cotton in the core hole of the column brick can effectively reduce the destructive effect of the rapid temperature change on the wall, and avoid cracking, deformation and collapse of the wall. In addition, since a locking brick is inserted between the refractory wall brick and the refractory column brick, and the locking brick filling cotton is filled in its slot, the locking brick enhances the connection strength between the refractory wall brick and the refractory column, and improves the overall stability of the wall, and the locking brick filling cotton can compensate for the thermal expansion and contraction of the brick body caused by the change of furnace temperature, and avoid cracking and deformation of the wall, and at the same time, this locking brick filling cotton can effectively prevent heat energy from leaking from the cracks and gaps, and improve the thermal efficiency of the furnace body.
[0007] According to the preferred embodiment of the utility model, the brick-locking filling cotton and the core column filling cotton are high-aluminum fiber or alumina fiber, which have good high-temperature stability and thermal shock resistance.
[0008] In a preferred embodiment of the utility model, the refractory layer is a high-silica cloth, the heat-insulating layer is a refractory cement layer, and the reinforcing layer is a zirconium-containing ceramic fiberboard. The refractory wall bricks and refractory column bricks are high-aluminum mullite refractory bricks, and the locking bricks are mullite refractory bricks. It has excellent refractory, heat-insulating and heat-insulating properties, as well as excellent high-temperature stability and corrosion resistance, and is particularly suitable for carbon production where the furnace temperature changes rapidly.
[0009] In a preferred embodiment of the utility model, the reinforcing core column is a heat-resistant steel column that penetrates the mutually stacked fire-resistant column bricks, and the cross section of the heat-resistant steel column is in a "X" shape. The cross section of the locking brick is in an "I" shape, and the two ends of the locking brick are respectively inserted into the wall brick slot and the column brick slot, effectively enhancing the structural rigidity and structural stability of the fire-resistant column and the wall.
[0010] In a preferred embodiment of the utility model, the brick height of the refractory wall brick is h, the brick height of the locking brick is H, H=1.5h, and the brick height of the refractory column brick is 2h. The staggered arrangement of the connecting seams of the locking bricks and the refractory wall bricks improves the structural stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The heat shock resistant brick wall structure of the ultra-high temperature carbon furnace of the utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.
[0012] Figure 1 This is a front structural schematic diagram of the heat shock resistant brick wall structure of the ultra-high temperature carbon furnace of the utility model;
[0013] Figure 2 yes Figure 1 A-A cross-sectional structural diagram;
[0014] Figure 3 yes Figure 2 Enlarged view of middle part I;
[0015] Figure 4 yes Figure 1 Front view of the middle refractory column brick;
[0016] Figure 5 yes Figure 4 A cross-sectional view of
[0017] Figure 6 yes Figure 3 Front view of the middle reinforced core column;
[0018] Figure 7 yes Figure 6 A cross-sectional view of
[0019] Figure 8 yes Figure 2 Front view of the middle lock brick;
[0020] Fig. 9 yes Figure 8 A cross-sectional view of
[0021] Fig.10 yes Figure 1 Front view of medium refractory wall brick;
[0022] Fig.11 yes Fig.10 A top view of
[0023] Fig.12 yes Fig.10 Left view of
[0024] Fig.13 yes Figure 1 Front view of the medium refractory top brick;
[0025] Fig.14 yes Fig.13 A top view of
[0026] Fig.15 yes Fig.13 Left view of .
[0027] In the figure, 1 is a refractory column brick, 101 is a column brick slot, 102 is a column brick core hole, 2 is a refractory wall brick, 201 is a wall brick convex strip, 202 is a wall brick mortise and tenon, 203 is a wall brick slot, 3 is a refractory top brick, 301 is a top brick mortise and tenon, 4 is a locking filling cotton, 5 is a locking brick, 6 is a reinforced core column, 7 is a core column filling cotton, 8 is a refractory layer, 9 is a heat insulation layer, and 10 is a reinforcement layer. DETAILED DESCRIPTION
[0028] like Figure 1 , Figure 2 The heat shock resistant brick wall structure of the ultra-high temperature carbon furnace shown in the figure includes a refractory cross wall and a refractory column. The refractory cross wall is built by a plurality of refractory wall bricks 2 layer by layer, and the vertical brick joints of the refractory wall bricks 2 of the same layer are staggered. The refractory column is built by refractory column bricks 1 one by one in the vertical direction to form a columnar structure. The refractory cross wall is built between two adjacent refractory columns, and a layer of refractory top bricks 3 is built on the top of the refractory cross wall and the refractory column.
[0029] like Figure 2 , Figure 3 As shown, a column brick core hole 102 is provided at the core of the refractory column brick 1, and a reinforcing core column 6 and a core column filling cotton 7 are buried in the column brick core hole 102. The reinforcing core column 6 runs through a refractory column brick 1 at the top of the wall to a refractory column brick 1 at the bottom of the wall. The two ends of the locking brick 5 are inserted into the column brick slot 101 and the wall brick slot 203, and the vertical brick slot 101 and the wall brick slot 203 are filled with locking brick filling cotton 4, which surrounds the outer side of the locking brick 5, so that the locking brick 5 squeezes the locking brick filling cotton 4 and shifts.
[0030] The brick-locking filling cotton 4 and the core column filling cotton 7 are high-aluminum fibers, and may also be alumina fibers.
[0031] like Figure 4 , Figure 5 As shown, the refractory column brick 1 has a rectangular column shape. A column brick core hole 102 is provided in the core of the refractory column brick 1 along the axial direction. The column brick core hole 102 is a rectangular hole. On the side of the fire side (high temperature gas side) of the refractory column brick 1, there are a reinforcement layer 10, a heat insulation layer 9 and a refractory layer 8 from the inside to the outside. The reinforcement layer 10 is a zirconium-containing ceramic fiber board. The reinforcement layer 10 is pasted on the brick body of the refractory column brick 1 through refractory cement. The heat insulation layer 9 is a refractory cement layer. The refractory layer 8 is bonded on the heat insulation layer 9. The refractory layer 8 is a high silica cloth layer. Column brick slots 101 are provided on both masonry surfaces of the refractory column brick 1 (the end surface connected to the refractory wall brick 2). The cross-sectional area of the column brick slot 101 is larger than the cross-sectional area of the lock brick 5, so as to form a space for filling the lock brick filling cotton 4. The refractory column brick 1 is a high-alumina mullite refractory brick.
[0032] like Figure 6 , Figure 7 As shown, the cross section of the reinforcing core column 6 is in the shape of a cross, and the four extended wing ends of the reinforcing core column 6 just happen to contact the hole wall of the corresponding column brick core hole 102. The reinforcing core column 6 is made of heat-resistant steel.
[0033] like Figure 8 , Fig. 9 As shown, the cross section of the locking brick 5 is in the shape of an I, and the height of the locking brick 5 is H. The height H is associated with the height h of the refractory wall brick 2. The locking brick 5 is made of mullite refractory brick.
[0034] like Fig.10 , Fig.11 and Fig.12 As shown, the refractory wall brick 2 is a regular hexahedral high-aluminum mullite. On the side of the fire-facing side (high-temperature gas side) of the refractory wall brick 2, from the inside to the outside, there are a reinforcement layer 10, a heat-insulating layer 9 and a refractory layer 8. The reinforcement layer 10 is a zirconium-containing ceramic fiber board. The reinforcement layer 10 is pasted on the brick body of the refractory wall brick 2 through refractory cement. The heat-insulating layer 9 is a refractory cement layer. The refractory layer 8 is adhered on the heat-insulating layer 9. The refractory layer 8 is a high-silica cloth layer. A wall brick slot 203 is provided on the masonry surface of the refractory wall brick 2 (the end surface connected to the refractory column brick 1). Strip-shaped wall brick protrusions 201 and wall brick tongue and grooves 202 are respectively provided on the upper and lower masonry surfaces of the refractory wall brick 2. The shapes of the wall brick protrusions 201 and the wall brick tongue and groove 202 are consistent. The height of the refractory wall brick 2 is h, and the height of the lock brick 5 is H=1.5h, so as to form a masonry staggered joint.
[0035] like Fig.13 , Fig.14 and Fig.15 As shown, the refractory top brick 3 is a regular hexahedral high-aluminum mullite refractory brick. On the side of the refractory top brick 3 facing the fire (facing the high-temperature gas side), there are a reinforcement layer 10, a heat insulation layer 9 and a refractory layer 8 from the inside to the outside. The reinforcement layer 10 is a zirconium-containing ceramic fiber board. The reinforcement layer 10 is pasted on the brick body of the refractory top brick 3 through refractory cement. The heat insulation layer 9 is a refractory cement layer. The refractory layer 8 is bonded on the heat insulation layer 9. The refractory layer 8 is a high-silica cloth layer. A strip-shaped top brick mortise and tenon groove 301 is provided on the lower masonry surface of the refractory top brick 3. The cross-sectional shape of the top brick mortise and tenon groove 301 matches the shape of the wall brick convex strip 201 of the refractory wall brick 2.
[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. An ultra-high temperature carbon furnace heat shock resistant brick wall structure, comprising a refractory cross wall and a refractory column, wherein the refractory cross wall is located between two adjacent refractory columns, and is characterized in that: The refractory column is built by refractory column bricks (1), and a reinforcing layer (10), a heat insulating layer (9) and a refractory layer (8) are arranged in sequence from the inside to the outside on the two hot sides of the refractory column bricks (1); a through brick core hole (102) is arranged at the core of the refractory column brick (1), and a reinforcing core column (6) and a core column filling cotton (7) are arranged in the brick core hole (102), and the reinforcing core column (6) is buried in the core column filling cotton (7); column brick slots (102) are also arranged at both ends of the refractory column brick (1). 101); the fire-resistant transverse wall is built by fire-resistant wall bricks (2), and a reinforcing layer (10), a heat insulating layer (9) and a fire-resistant layer (8) are arranged in sequence from the inside to the outside on the two hot sides of the fire-resistant wall bricks (2); a wall brick slot (203) is arranged at the connecting end of the fire-resistant wall bricks (2) and the fire-resistant column bricks (1); and locking brick filling cotton (4) and locking bricks (5) are arranged in the opposite wall brick slots (203) and column brick slots (101), and the locking bricks (5) are buried in the locking brick filling cotton (4).
2. The ultra-high temperature carbon furnace heat shock resistant brick wall structure according to claim 1 is characterized in that: The brick-locking filling cotton (4) and the core column filling cotton (7) are high-aluminum fibers or alumina fibers.
3. The ultra-high temperature carbon furnace heat shock resistant brick wall structure according to claim 1, characterized in that: The fire-resistant layer (8) is a high-silica cloth, the heat-insulating layer (9) is a fire-resistant cement layer, and the reinforcing layer (10) is a zirconium-containing ceramic fiberboard.
4. The ultra-high temperature carbon furnace heat shock resistant brick wall structure according to claim 1, 2 or 3, characterized in that: The refractory wall bricks (2) and the refractory column bricks (1) are high-aluminum mullite refractory bricks, and the locking bricks (5) are mullite refractory bricks.
5. The ultra-high temperature carbon furnace heat shock resistant brick wall structure according to claim 1, 2 or 3, characterized in that: The reinforcing core column (6) is a heat-resistant steel column that penetrates the mutually stacked refractory column bricks (1), and the cross section of the heat-resistant steel column is in a "cross" shape.
6. The ultra-high temperature carbon furnace heat shock resistant brick wall structure according to claim 1, characterized in that: The brick height of the refractory wall brick (2) is h, the brick height of the locking brick (5) is H, H=1.5h, and the brick height of the refractory column brick (1) is 2h.
7. The ultra-high temperature carbon furnace heat shock resistant brick wall structure according to claim 1, characterized in that: The cross section of the locking brick (5) is in the shape of an I, and the two ends of the locking brick (5) are respectively inserted into the wall brick slot (203) and the column brick slot (101).