Flame path wall structure of roasting furnace

Abstract

The utility model discloses a roasting furnace flame path wall structure which comprises a flame path wall body, the flame path wall body is in a hollow rectangular column shape, a plurality of middle partition walls are arranged in the flame path wall body, and the middle partition walls are arranged in a staggered mode to form a hot gas flame path. A pressure-bearing piece is arranged on the wall body of the flame path wall; the pressure-bearing piece comprises a bearing beam and supporting legs, the bearing beam is arranged in the middle of the wall body of the flame path wall, and the bearing beam is in a rectangular ring shape and is arranged on the peripheral side walls of the wall body of the flame path wall; supporting legs are arranged at the bottom end of the bearing beam, the bearing beam and the flame path wall body located above the bearing beam are supported in a pressure-bearing mode through the supporting legs, the supporting legs are arranged in the peripheral side walls of the flame path wall body, the top ends of the supporting legs are connected with the bottom end of the bearing beam through mortise and tenon joint structures, and the bottom ends of the supporting legs make contact with the furnace bottom.

Description

Technical Field

[0001] The utility model relates to the field of roasting furnaces, in particular to a fire channel wall structure of a roasting furnace. Background Art

[0002] In order to make full use of the volatiles overflowing from the anode blocks in the material box, the existing anode baking furnaces in China, including major anode production plants abroad, all adopt the method of not applying mud to the vertical brick joints when building the fire channel wall, leaving 2mm thick empty brick joints as the volatile overflow channel, relying on the negative pressure in the fire channel, to draw these volatiles into the fire channel to participate in the combustion, effectively reducing the amount of external fuel supply. This volatile utilization method has become the main means of energy saving for anode baking furnaces. However, this fire channel wall structure has the following two disadvantages: 1. In order to leave a volatile channel, mud is only applied to the horizontal brick joints when building the fire channel wall, and no mud is applied to the vertical brick joints. Even if the mud at the horizontal brick joints is sintered at high temperature, the overall strength of the entire fire channel wall is still not ideal; 2. This fire channel wall structure with empty vertical brick joints is easy to deform as a whole under the high temperature conditions of the furnace, the mechanical external force of the furnace loading and unloading operation and the strong negative pressure in the fire channel. In severe cases, it will cause the material box to deform, resulting in the inability to implement mechanized furnace loading and unloading operations, causing the fire channel wall to be scrapped in advance.

[0003] Patent No. ZL200820220144.8 discloses a roasting furnace flue wall, which enhances the structural strength of the flue wall by arranging mutually matching protrusions and grooves on bricks to prevent deformation of the flue wall; however, it was found during use that the structure only appropriately slowed down the deformation rate of the flue wall, and the effect of extending the service life of the flue wall was not ideal. It is necessary to study a new type of roasting furnace flue wall structure to solve the above problems. Summary of the invention

[0004] The utility model aims to solve the above problems and provide a roasting furnace flue wall structure which has a simple structure and prevents deformation.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A roasting furnace flue wall structure, including a flue wall body, the flue wall body is in the shape of a rectangular column with a hollow interior, a plurality of intermediate partition walls are arranged in the flue wall body, and the plurality of intermediate partition walls are staggered to form a gas flow fire channel; a pressure-bearing part is arranged on the flue wall body; the pressure-bearing part includes a load-bearing beam and supporting legs, the load-bearing beam is arranged in the middle of the flue wall body, the load-bearing beam is in the shape of a rectangular ring and is arranged on the surrounding side walls of the flue wall body; supporting legs are arranged at the bottom end of the load-bearing beam, and the load-bearing beam and the flue wall body located above the load-bearing beam are pressure-supported by the supporting legs, the supporting legs are arranged in the surrounding side walls of the flue wall body, the top end of the supporting legs is fixedly connected to the bottom end of the load-bearing beam, and the bottom end of the supporting legs is in contact with the bottom of the furnace.

[0007] Furthermore, the thickness of the load-bearing beam is consistent with the thickness of the fire channel wall. After the load-bearing beam is arranged in the fire channel wall, the side wall of the load-bearing beam is flush with the side wall of the fire channel wall.

[0008] Furthermore, the supporting legs include a first supporting leg and a second supporting leg. The first supporting legs are provided with four and the four first supporting legs are respectively provided at the bottom ends of the four end corners of the load-bearing beam. The second supporting legs are provided with two and the two second supporting legs are respectively provided at the bottom ends of the middle parts of the side walls on both sides in the width direction of the load-bearing beam.

[0009] Furthermore, the first supporting leg is arranged at the bottom end of the corners of the fire channel wall, the cross-section of the first supporting leg is L-shaped and the side wall of the first supporting leg is flush with the side wall of the corner of the fire channel wall.

[0010] Furthermore, the thickness of the second supporting leg is consistent with the thickness of the fire channel wall, the inner wall of the second supporting leg is flush with the inner wall of the fire channel wall, and the outer wall of the second supporting leg is flush with the outer wall of the fire channel wall.

[0011] Furthermore, the load-bearing beams and supporting legs are both refractory prefabricated parts.

[0012] Furthermore, the flue wall is formed by stacking a number of bricks or prefabricated blocks; the flue wall located below the load-bearing beam is formed by stacking bricks or prefabricated blocks on the upper end of the furnace bottom and on both sides of the supporting legs; the flue wall located above the load-bearing beam is formed by stacking bricks or prefabricated blocks on the upper end of the load-bearing beam.

[0013] Furthermore, the fire channel wall body is formed by stacking a plurality of prefabricated blocks, and a plurality of air-permeable blocks are evenly arranged on the fire channel wall body, and the air-permeable blocks are stacked between adjacent prefabricated blocks.

[0014] Furthermore, the air permeable block is a porous silicon carbide ceramic air permeable block.

[0015] Compared with the prior art, the utility model has the following advantages and positive effects:

[0016] The utility model adopts the design of arranging pressure-bearing parts on the wall of the fire channel wall, so that the wall of the fire channel wall can be divided into an upper part and a lower part by the pressure-bearing parts, and the pressure-bearing parts support the wall of the upper part of the fire channel wall to avoid the situation that the upper part of the fire channel wall presses its entire weight on the wall of the lower part of the fire channel wall, causing the lower part of the fire channel wall to deform under the heavy pressure, thereby effectively extending the service life of the fire channel wall; and, by arranging supporting legs at the bottom end of the load-bearing beam and the load-bearing beam and the supporting legs are all arranged inside the wall of the fire channel wall, the load-bearing beam and the supporting legs can effectively enhance the structural strength of the entire fire channel wall while playing the role of supporting the fire channel wall, prevent the fire channel wall from being deformed, further extend the service life of the fire channel wall, and thus improve the use effect of the roasting furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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 described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the fire channel wall structure in Example 1;

[0019] Figure 2 for Figure 1 AA cross-sectional structure diagram;

[0020] Figure 3 for Figure 1 BB cross-sectional structure diagram;

[0021] Figure 4 is a longitudinal cross-sectional view of the fire channel wall in Example 1;

[0022] Figure 5 It is a bottom-up structural diagram of the pressure-bearing parts;

[0023] Figure 6 This is a schematic diagram of the fire channel wall structure in Example 2. DETAILED DESCRIPTION

[0024] 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 of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work, any modifications, equivalent replacements, improvements, etc., should be included in the protection scope of the utility model.

[0025] Embodiment 1, as Figures 1 to 5 As shown, this embodiment discloses a roasting furnace flue wall structure, including a flue wall body 1, the flue wall body 1 is in the shape of a rectangular column with a hollow interior, a plurality of intermediate partition walls 3 are arranged in the flue wall body 1, and the plurality of intermediate partition walls 3 are staggered to form a gas flow flue;

[0026] The fire channel wall body 1 is provided with a pressure-bearing member 2; the pressure-bearing member 2 includes a load-bearing beam 201 and a supporting leg; the load-bearing beam 201 is a fire-resistant prefabricated member; the load-bearing beam 201 is arranged in the middle of the fire channel wall body 1; the load-bearing beam 201 is in a rectangular ring shape and is arranged on the side walls of the fire channel wall body 1; the thickness of the load-bearing beam 201 is consistent with the thickness of the fire channel wall body 1; after the load-bearing beam 201 is arranged in the fire channel wall body 1, the side wall of the load-bearing beam 201 is flush with the side wall of the fire channel wall body 1;

[0027] A supporting leg is provided at the bottom end of the load-bearing beam 201, and the load-bearing beam 201 and the fire channel wall 1 located above the load-bearing beam 201 are pressure-supported by the supporting leg. The supporting leg is a refractory prefabricated part, and the supporting leg is arranged in the surrounding side walls of the fire channel wall 1. The bottom end of the load-bearing beam 201 is connected to the top end of the supporting leg by a mortise and tenon structure, and the bottom end of the supporting leg is in contact with the furnace bottom.

[0028] The supporting legs include a first supporting leg 202 and a second supporting leg 203. Four first supporting legs 202 are provided and the four first supporting legs 202 are respectively arranged at the bottom ends of the four end corners of the load-bearing beam 201 and the bottom ends of the four corners of the fire wall 1; the cross-section of the first supporting leg 202 is L-shaped and the side walls of the first supporting leg 202 are flush with the side walls of the corners of the fire wall 1.

[0029] There are two second supporting legs 203, and the two second supporting legs 203 are respectively arranged at the bottom end of the middle part of the side walls on both sides in the width direction of the load-bearing beam 201; the thickness dimension of the second supporting leg 203 is consistent with the thickness dimension of the fire channel wall 1, the inner wall of the second supporting leg 203 is flush with the inner wall of the fire channel wall 1, and the outer wall of the second supporting leg 203 is flush with the outer wall of the fire channel wall 1.

[0030] The load-bearing beam is in the shape of a horizontal rectangle as a whole. Support legs are arranged at the bottom of the end corners and the bottom of the middle part of the beam to improve its load-bearing and compressive resistance, avoiding the situation where the fire channel wall and the load-bearing beam are compressed and deformed together during use, thereby improving the use effect of the utility model.

[0031] The flue wall body 1 is formed by a plurality of bricks 4; the flue wall body 1 located below the load-bearing beam 201 is formed by a plurality of bricks 4 built on the upper end of the furnace bottom and on both sides of the supporting legs; the flue wall body 1 located above the load-bearing beam 201 is formed by a plurality of bricks 4 built on the upper end of the load-bearing beam 201.

[0032] When constructing the fire duct wall, first place the pressure-bearing parts in the construction area, then build the fire duct wall with bricks in the area formed between adjacent supporting legs and the load-bearing beams, and finally continue to build the fire duct wall on the top of the load-bearing beams until the overall building work of the fire duct wall is completed; the building width is consistent with the width of the supporting legs and the load-bearing beams, that is, the side walls of the supporting legs and the load-bearing beams are flush with the side walls of the fire duct wall built with bricks, so as to achieve the pressure-bearing support effect on the upper part of the fire duct wall.

[0033] Embodiment 2, as Figure 6 As shown, this embodiment discloses a roasting furnace flue wall structure, including a flue wall body 1, on which a pressure-bearing member is arranged; the pressure-bearing member includes a load-bearing beam 7 and a support leg 8, the load-bearing beam 7 is a refractory load-bearing beam, the load-bearing beam 7 is arranged in the middle of the flue wall body 1, the load-bearing beam 7 is in a rectangular ring shape and the load-bearing beam 7 is arranged on the side walls of the flue wall body 1; the thickness of the load-bearing beam 7 is consistent with the thickness of the flue wall body 1, and after the load-bearing beam 7 is arranged in the flue wall body 1, the side wall of the load-bearing beam 7 is flush with the side wall of the flue wall 1;

[0034] A supporting leg 8 is provided at the bottom end of the load-bearing beam 7, and the supporting leg 8 is used to support the load-bearing beam 7 and the fire channel wall 1 located above the load-bearing beam 7 under pressure. The supporting leg 8 is a refractory material supporting leg, and the supporting leg 8 is arranged in the surrounding side walls of the fire channel wall 1. The bottom end of the load-bearing beam 7 is connected to the top end of the supporting leg 8 by a mortise and tenon structure, and the bottom end of the supporting leg 8 is in contact with the furnace bottom.

[0035] The fire channel wall body 1 is formed by stacking a plurality of prefabricated blocks 5; the fire channel wall body 1 located below the load-bearing beam 7 is formed by stacking a plurality of prefabricated blocks 5 on the upper end of the furnace bottom and on both sides of the supporting legs 8; the fire channel wall body 1 located above the load-bearing beam 7 is formed by stacking a plurality of prefabricated blocks 5 on the upper end of the load-bearing beam 7.

[0036] A plurality of air-permeable blocks 6 are evenly arranged on the fire channel wall 1. The air-permeable blocks 6 are stacked between adjacent prefabricated blocks 5 and can be appropriately adjusted according to the arrangement density. The air-permeable blocks 6 are porous silicon carbide ceramic air-permeable blocks.

[0037] In the present embodiment, the wall of the fire channel is built by prefabricated blocks, and other structures are the same as those in Embodiment 1. In the wall structure of the fire channel of the present embodiment, a breathable block is provided, which does not require brick joints as volatile matter passages, and the side walls of the prefabricated blocks can be directly connected with the side walls of the breathable blocks. After the stacking is completed, the volatile matter extraction effect can be achieved through the high-density pores in the breathable blocks. Since the structure does not require reserved brick joints between the prefabricated blocks, the structural strength of the entire fire channel wall is improved, the deformation of the fire channel wall is effectively prevented, and the use effect of the roasting furnace is further improved.

[0038] The utility model adopts the design of arranging pressure-bearing parts on the wall of the fire channel wall, so that the wall of the fire channel wall can be divided into an upper part and a lower part by the pressure-bearing parts, and the pressure-bearing parts support the wall of the upper part of the fire channel wall to avoid the situation that the upper part of the fire channel wall presses its entire weight on the wall of the lower part of the fire channel wall, causing the lower part of the fire channel wall to deform under the heavy pressure, thereby effectively extending the service life of the fire channel wall; and, by arranging supporting legs at the bottom end of the load-bearing beam and the load-bearing beam and the supporting legs are all arranged inside the wall of the fire channel wall, the load-bearing beam and the supporting legs can effectively enhance the structural strength of the entire fire channel wall while playing the role of supporting the fire channel wall, prevent the fire channel wall from being deformed, further extend the service life of the fire channel wall, and thus improve the use effect of the roasting furnace.

Claims

1. A roasting furnace flue wall structure, comprising a flue wall body, the flue wall body is in the shape of a rectangular column with a hollow interior, a plurality of intermediate partition walls are arranged in the flue wall body, and the plurality of intermediate partition walls are staggered to form a gas flow flue; characterized in that: A pressure-bearing part is arranged on the wall of the fire channel wall; the pressure-bearing part includes a load-bearing beam and supporting legs. The load-bearing beam is arranged in the middle of the wall of the fire channel wall, the load-bearing beam is in a rectangular ring shape and is arranged on the surrounding side walls of the wall of the fire channel wall; supporting legs are arranged at the bottom end of the load-bearing beam, and the load-bearing beam and the wall of the fire channel wall located above the load-bearing beam are pressure-supported by the supporting legs. The supporting legs are arranged in the surrounding side walls of the wall of the fire channel wall, the top end of the supporting legs is fixedly connected to the bottom end of the load-bearing beam, and the bottom end of the supporting legs is in contact with the bottom of the furnace.

2. The roasting furnace flue wall structure according to claim 1, characterized in that: The thickness of the load-bearing beam is consistent with the thickness of the fire channel wall. After the load-bearing beam is arranged in the fire channel wall, the side wall of the load-bearing beam is flush with the side wall of the fire channel wall.

3. The roasting furnace flue wall structure according to claim 1, characterized in that: The supporting legs include a first supporting leg and a second supporting leg. The first supporting legs are provided with four and the four first supporting legs are respectively arranged at the bottom ends of the four end corners of the load-bearing beam. The second supporting legs are provided with two and the two second supporting legs are respectively arranged at the bottom ends of the middle parts of the side walls on both sides in the width direction of the load-bearing beam.

4. The roasting furnace flue wall structure according to claim 3, characterized in that: The first supporting leg is arranged at the bottom end of the corners of the fire channel wall, the cross section of the first supporting leg is L-shaped and the side wall of the first supporting leg is flush with the side wall of the corner of the fire channel wall.

5. The roasting furnace flue wall structure according to claim 3, characterized in that: The thickness of the second supporting leg is consistent with the thickness of the fire channel wall, the inner wall of the second supporting leg is flush with the inner wall of the fire channel wall, and the outer wall of the second supporting leg is flush with the outer wall of the fire channel wall.

6. The roasting furnace flue wall structure according to claim 1, characterized in that: The load-bearing beams and supporting legs are all fire-resistant prefabricated parts.

7. The roasting furnace flue wall structure according to claim 1, characterized in that: The wall of the fire channel is formed by stacking a number of bricks or prefabricated blocks; the wall of the fire channel located below the load-bearing beam is formed by stacking bricks or prefabricated blocks on the upper end of the furnace bottom and on both sides of the supporting legs; the wall of the fire channel located above the load-bearing beam is formed by stacking bricks or prefabricated blocks on the upper end of the load-bearing beam.

8. The roasting furnace flue wall structure according to claim 1, characterized in that: The fire channel wall body is formed by stacking a plurality of prefabricated blocks, and a plurality of air-permeable blocks are evenly arranged on the fire channel wall body, and the air-permeable blocks are stacked between adjacent prefabricated blocks.

9. The roasting furnace flue wall structure according to claim 8, characterized in that: The air permeable block is a porous silicon carbide ceramic air permeable block.

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