Chute structure of dry quenching furnace and dry quenching system

Abstract

The embodiment of the utility model provides a chute structure of a dry quenching furnace and a dry quenching system, the chute structure is used for a chute area of the dry quenching furnace, the chute structure comprises a plurality of bracket structures and a plurality of partition wall groups, the bracket structures are uniformly distributed on the side wall of the dry quenching furnace along the circumferential direction; each partition wall group is arranged between every two adjacent bracket structures, each partition wall group comprises a plurality of partition walls, and the partition walls are arranged between every two adjacent bracket structures in the height direction of the dry quenching furnace according to the requirements of the strength and the circulation area so as to divide the chute opening into a plurality of sub chute openings; the partition wall is connected with the bracket structure through a connecting assembly; the partition wall comprises a plurality of layers of refractory bricks, and every two adjacent layers of refractory bricks are meshed through a circumferential brick tongue and brick groove structure. Every two adjacent refractory bricks on each layer are meshed through a radial brick tongue and brick groove structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dry quenching, in particular to a chute structure of a dry quenching furnace and a dry quenching system. BACKGROUND

[0002] The dry quenching furnace is the core equipment of the dry quenching system, and is divided into a pre-storage area, an annular air duct area, a chute area and a cooling area from top to bottom according to the structure. The chute area is a channel for connecting the dry quenching furnace cooling area and the annular air duct. The inert circulating gas introduced by the air distribution device at the bottom of the dry quenching furnace flows into the annular air duct after heat exchange with the red coke in the cooling area. The chute is a gas channel formed by the side wall of the dry quenching furnace, a plurality of bracket structures and partition walls. In the prior art, the strength of the chute bracket of the dry quenching furnace and the stability of the bracket structure are poor, so the chute bracket is prone to collapse, thereby affecting production. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the embodiment of the present application is to provide a chute structure of a dry quenching furnace and a dry quenching system to improve the strength of the chute bracket of the dry quenching furnace and the stability of the bracket structure. The specific technical solution is as follows:

[0004] The embodiment of the first aspect of the present application provides a chute structure of a dry quenching furnace for a chute area of the dry quenching furnace, comprising: a plurality of bracket structures and a plurality of partition wall groups, the plurality of bracket structures are uniformly distributed on the circumferential direction of the side wall of the dry quenching furnace; the partition wall group is arranged between two adjacent bracket structures, the partition wall group comprises a plurality of partition walls, and the plurality of partition walls are arranged between the two adjacent bracket structures along the vertical direction of the dry quenching furnace to divide the chute area into a plurality of sub-chute openings; the partition wall and the bracket structure are connected through a connecting assembly; the partition wall comprises a plurality of layers of refractory bricks, and the refractory brick bodies between two adjacent layers of refractory bricks are engaged through a circumferential brick tongue and brick groove structure; two adjacent refractory bricks of the partition wall are engaged through a radial brick tongue and brick groove structure.

[0005] In some embodiments, the connecting assembly comprises a plurality of connecting bricks, a first clamping groove is arranged on the side surface of the bracket structure close to the partition wall, a second clamping groove is arranged on the side surface of the refractory brick of the partition wall close to the bracket structure, and the connecting bricks are partially arranged in the first clamping groove and partially arranged in the second clamping groove.

[0006] In some embodiments, the first clamping groove and the second clamping groove are the same in shape and are circular arc grooves.

[0007] In some embodiments, the connecting assembly further comprises a metal plate and a fiber plate, the fiber plate is attached to the side surface of the partition wall close to the bracket structure, the metal plate is arranged on the side surface of the fiber plate close to the bracket structure, and the bracket structure and the metal plate are filled with fire clay.

[0008] In some embodiments, the upper surface of the top layer of the firebricks is planar, and the lower surface of the top layer of the firebricks is arched, and the lower layers of the firebricks are arched firebricks.

[0009] In some embodiments, among the two adjacent layers of the firebricks of the partition wall, the upper surface of the firebrick in the lower layer is provided with a brick groove, and the lower surface of the firebrick in the upper layer is provided with a brick tongue opposite the position of the brick groove.

[0010] In some embodiments, among the two adjacent layers of the firebricks of the partition wall, the upper surface of the firebrick in the lower layer is provided with a brick tongue, and the lower surface of the firebrick in the upper layer is provided with a brick groove opposite the position of the brick tongue.

[0011] In some embodiments, the partition wall and the inner wall of the corbel structure have a preset included angle, and the preset included angle is 50° to 70°.

[0012] In some embodiments, the radial brick tongue-brick groove structure is arranged at the top of the firebricks.

[0013] Embodiments of the second aspect of the application provide a dry quenching system, which comprises the dry quenching chute structure described above.

[0014] In the embodiments of the application, by arranging a plurality of partition walls, the thickness of the accumulated coke at the inlet of the circulating gas discharge channel (chute) is reduced by the plurality of partition walls, thereby reducing the resistance of the accumulated coke to the cooling gas, so as to ensure the maximum processing condition of dry quenching while ensuring that the flow rate of the cooling gas is within a reasonable range below the limit flow rate, and reduce the pressure difference between the upper and lower surfaces of the coke layer in the dry quenching furnace to avoid the coke layer floating up. The partition wall comprises a plurality of layers of firebricks, and the two opposite firebricks in the two adjacent layers are engaged by a circumferential brick groove structure, and the two adjacent firebricks of the partition wall are engaged by a radial brick tongue-brick groove structure, so as to prevent the firebricks from slipping between the layers and between the adjacent firebricks in each layer, and improve the stability of the partition wall.

[0015] Of course, implementing any product of the application does not necessarily need to achieve all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0017] Figure 1 The side view of the chute structure of the dry quenching furnace in the embodiments of the application is shown in the figure.

[0018] Figure 2 The side view of the chute structure of the dry quenching furnace provided in the embodiment of the present application at the chute opening;

[0019] Figure 3 The side view of the partition wall provided in the embodiment of the present application; Figure 2 The side view of the partition wall provided in the embodiment of the present application;

[0020] Figure 4 The schematic diagram of the cooperation between the bracket structure and the partition wall in the chute structure of the dry quenching furnace provided in the embodiment of the present application;

[0021] Figure 5 The schematic diagram of the connection between the bracket structure and the partition wall in the chute structure of the dry quenching furnace provided in the embodiment of the present application through the connecting assembly;

[0022] Figure 6 The schematic diagram of the connecting assembly in the chute structure of the dry quenching furnace provided in the embodiment of the present application;

[0023] Figure 7 The schematic diagram of the circumferential tongue and groove brick in the chute structure of the dry quenching furnace provided in the embodiment of the present application;

[0024] Figure 8 The schematic diagram of the radial tongue and groove brick in the chute structure of the dry quenching furnace provided in the embodiment of the present application;

[0025] Figure 9 The schematic diagram of the partition wall in the chute structure of the dry quenching furnace provided in the embodiment of the present application;

[0026] Figure 10 The schematic diagram of the first refractory brick in the chute structure of the dry quenching furnace provided in the embodiment of the present application;

[0027] Figure 11 The enlarged view of C in the embodiment of the present application; Figure 10 The enlarged view of C in the embodiment of the present application;

[0028] Figure 12 The processing diagram of the metal plate in the embodiment of the present application;

[0029] Figure 13 The schematic diagram of the chute structure of the dry quenching furnace provided in the embodiment of the present application.

[0030] Reference signs:

[0031] Bracket structure 10; first clamping groove 11; partition wall 20; firebrick 21; first firebrick 21a; second firebrick 21b; second clamping groove 211; circumferential brick tongue 212; circumferential brick groove 213; radial brick tongue 214; radial brick groove 215; connecting assembly 30; connecting brick 31; metal plate 32; metal plate processing hole 321; fiber plate 33; fire clay 34; dry quenching furnace side wall masonry 40; preset included angle a; sub-ramp A; radial brick tongue and groove structure B. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art based on the present application belong to the scope of protection of the present application.

[0033] The ramp is a gas passage formed by two layers of concentric cylindrical walls and a plurality of evenly arranged supports (i.e. brackets) at the ring beam part of the dry quenching furnace. The conventional ramp area is uniformly distributed with a plurality of gas flow passages. A single gas flow passage has no partition wall in the upward direction, i.e. a single ramp structure. The coke layer has a large thickness, the gas flow resistance is large, the gas distribution uniformity is poor, and the ability to suppress coke floating is also poor. After the treatment capacity is increased, coke floating often occurs, which causes the negative pressure at the inlet of the boiler to increase, has a negative impact on the entire dry quenching system, and causes the temperature of the discharged coke to rise, thereby preventing the treatment capacity from being improved and limiting the need for large-scale dry quenching. The existing multi-ramp uses heat-resistant stainless steel products, but the temperature at this position is high and the cold and hot alternation is frequent. The service life of the material using heat-resistant stainless steel products is short and is prone to deformation and damage, thereby affecting the normal production of the entire dry quenching system, increasing the dry quenching maintenance frequency, and frequent maintenance having a negative impact on the brackets of the dry quenching furnace and even the entire furnace.

[0034] In order to improve the stability of the brick wall structure at the ramp of the dry quenching furnace, as shown in Figure 1 , Figure 2 and Figure 3 , Figure 13 , the embodiments of the first aspect of the present application provide a ramp structure for the ramp area of a dry quenching furnace (not shown in the figure). The ramp structure of the dry quenching furnace includes a plurality of bracket structures 10 and a plurality of partition wall groups. The plurality of bracket structures 10 are uniformly distributed along the circumferential direction of the dry quenching furnace in the dry quenching furnace side wall masonry 40. Each partition wall group is arranged between two adjacent bracket structures 10. The partition wall group includes a plurality of partition walls 20. The plurality of partition walls 20 are arranged according to the strength and the ramp flow cross-sectional area between the two adjacent bracket structures 10 in the upward direction of the dry quenching furnace. In actual production, the plurality of partition walls 20 are arranged according to the strength and the ramp flow cross-sectional area between the two adjacent bracket structures 10 to divide the ramp into a plurality of sub-ramps A. As shown inFigure 4 and Figure 5 、 Figure 6 As shown in the figure, the partition wall 20 is connected with the corbel structure 10 through the connecting assembly 30; the partition wall 20 comprises multiple layers of firebricks 21, and two adjacent firebricks 21 in opposite positions are engaged through a circumferential tongue and groove structure; two adjacent firebricks 21 of the partition wall are engaged through a radial tongue and groove structure.

[0035] In the embodiment of the present application, as shown in the figure, Figure 1 and Figure 2 、 Figure 4 As shown in the figure, multiple partition walls 20 are arranged between adjacent two corbel structures 10 along the height direction of the dry quenching furnace; in actual production, the partition wall 20 is arranged between adjacent two corbel structures 10 according to the strength and the requirement of the cross section of the inclined channel, so as to divide the inclined channel into multiple sub inclined channel openings A, that is, multiple gas flow channels are formed; for the dry quenching of the same scale, under the condition that the total area of the inclined channel outlet is the same, compared with the single inclined channel opening, by arranging multiple partition walls 20, the thickness of the coke accumulated at the inlet of the circulating gas discharge channel is reduced by using multiple partition walls 20, so as to reduce the resistance of the accumulated coke to the cooling gas; in addition, under the condition that the inclined channel area is the same, the gas flow distribution of the multiple inclined channel opening structure is more uniform, and the maximum flow rate through the multiple inclined channel is less than the maximum flow rate through the double inclined channel or single inclined channel opening structure. The gas flow rate distribution through the coke layer is closer to the average flow rate through the surface of the coke layer, the maximum upward lift of the circulating gas through the coke is reduced, the ability to suppress the coke floating is stronger, the dry quenching treatment capacity is greatly increased, and the market demand for large-scale dry quenching is realized. By arranging the partition wall 20 between the adjacent corbel structures 10, the stress distribution of the corbel structure 10 of the multiple inclined channel dry quenching furnace is more uniform, the structural strength and stability of the corbel structure 10 are further increased, and the overall strength of the inclined channel area of the large-scale dry quenching furnace is ensured.

[0036] Specifically, the outer side of the corbel structure 10 is connected through a connecting piece, and the connecting piece can be a connecting wall composed of firebricks; the upper part of the corbel structure 10 is provided with a ring beam, and the inner side of the corbel structure 10 is connected together through the ring beam, and the ring beam can be arranged on the outer side wall of the dry quenching furnace.

[0037] As shown in the figure, Figure 4 、 Figure 7 and Figure 8As shown, the partition wall 20 comprises multiple layers of firebricks 21, and the two opposite firebrick masonry between two adjacent layers of firebricks 21 are connected through a circumferential brick groove and brick tongue structure, so as to realize the mutual engagement of the two adjacent layers of firebricks 21, and further realize the close connection, thereby preventing the interlayer slip. In the circumferential brick groove and brick tongue structure, a circumferential brick groove 213 is arranged on one of the firebricks, and a circumferential brick tongue 212 is arranged on the other firebrick, for example, the firebrick on the upper side has the circumferential brick tongue 212, and the firebrick on the lower side has the circumferential brick groove 213. The two adjacent firebricks 21 in each layer are connected through a radial brick tongue and brick groove structure, so as to realize the close engagement between the two adjacent firebricks 21 in each layer, effectively prevent the expansion of the brick joint caused by the penetration of coke, prevent the interlayer slip between the firebricks 21 and the slip between the two adjacent firebricks 21 in each layer, improve the stability of the partition wall 20, prolong the service life of the chute structure, and further prolong the service life of the dry quenching furnace. In some embodiments, as shown in Figure 9 the radial brick tongue and brick groove structure B is arranged at the top of the firebrick 21. In the radial brick tongue and brick groove structure B, a radial brick tongue 214 is arranged on one of the firebricks, and a radial brick groove 215 is arranged on the other firebrick, for example, the firebrick on the left side has the radial brick groove 215, and the firebrick on the right side has the radial brick tongue 214.

[0038] Specifically, as shown in Figure 9 the firebrick 21 close to the corbel structure 10 in each layer of firebricks 21 is defined as the first firebrick 21a, and the firebrick 21 between the two first firebricks 21a on both sides of each layer of firebricks 21 is defined as the second firebrick 21b. The upper surface of each first firebrick 21a is a plane, the top surface of the uppermost second firebrick 21b is a straight surface, and the bottom surface is arc-shaped. Except for the uppermost second firebrick 21b, the second firebricks 21b of the remaining layers of the partition wall 20 are in an arch structure, and the cross section is a sector.

[0039] In some embodiments of the present application, as shown in Figure 4 and Figure 6 the connecting assembly 30 comprises multiple connecting bricks 31, the side surface of the corbel structure 10 close to the partition wall 20 is provided with a first clamping groove 11, and the side surface of the firebrick 21 of the partition wall close to the corbel structure 10 is provided with a second clamping groove 211. The connecting brick 31 is partially located in the first clamping groove 11, and the other part is located in the second clamping groove 211.

[0040] In the embodiments of the present application, since a part of the connecting brick 31 is arranged in the first clamping groove 11 in the corbel structure 10, and the other part is arranged in the second clamping groove 211 of the partition wall 20, the corbel structure 10 and the partition wall 20 will not slip, and the connecting brick 31 plays a role of locking the corbel structure 10 and the partition wall 20.

[0041] Specifically, the shapes of the first slot 11 and the second slot 211 are determined according to the shape of the connecting brick 31 , and may be the same or different. The connecting brick 31 may be a prism or a cylinder.

[0042] In some embodiments of the present application, the first card slot 11 and the second card slot 211 have the same shape and are arc-shaped grooves.

[0043] In the embodiment of the present application, since the first clamping groove 11 and the second clamping groove 211 are both arc-shaped grooves, compared with grooves of other shapes, the arc-shaped grooves can reduce stress concentration of the connecting brick 31 and improve the reliability of the structure.

[0044] Specifically, the first clamping groove 11 and the second clamping groove 211 can be semi-cylindrical grooves respectively, and the connecting brick 31 is a cylindrical brick.

[0045] In some embodiments of the present application, Figure 5 and Figure 6 、 Figure 10 、 Figure 11 As shown, the connection assembly 30 also includes a metal plate 32 and a fiberboard 33. The fiberboard 33 is attached to the side of the partition wall 20 close to the corbel structure 10. The metal plate 32 is arranged on the side of the fiberboard 33 close to the corbel structure 10. Fire mud 34 is filled between the corbel structure 10 and the metal plate 32.

[0046] In the embodiment of the present application, the corbel structure 10 and the partition wall 20 are tightly connected by connecting bricks 31, a fiberboard 33 and a metal plate 32 are arranged between the corbel structure 10 and the partition wall 20, and fire mud 34 is filled between the metal plate 32 and the corbel structure 10, so that the partition wall 20 and the corbel structure 10 will not be sintered into a whole in a high-temperature environment, and the friction resistance between the partition wall 20 and the corbel structure 10 is reduced to meet the independent expansion requirements of the corbel structure 10, thereby improving the service life of the ramp structure.

[0047] Figure 12 This is a diagram illustrating the processing of the metal plate in this embodiment. The metal plate is divided into multiple pieces for easier masonry and processing. Specifically, the metal plate can be made of a metal suitable for the working environment, such as stainless steel, while the fiberboard can be made of a non-metallic material suitable for the working environment, such as aluminum silicate fiber. Metal plate 32 is provided with a metal plate processing hole 321, through which the connecting brick 31 can pass.

[0048] In some embodiments of the present application, the topmost refractory brick 21 has a flat top surface and an arched bottom surface. The refractory bricks 21 from the next topmost to the bottommost layer are arched. The arched brick structure provides greater stability, further enhancing the stability of the partition wall 20. The top surface of the topmost refractory brick 21 does not intersect with the upper space, requiring less structural stability. For ease of fabrication, it can be simply designed as a flat surface.

[0049] In some embodiments of the present application, the upper surface of the lower firebrick 21 in the two adjacent layers of firebricks 21 is provided with a brick groove, and the lower surface of the upper firebrick 21 in the two adjacent layers of firebricks 21 is provided with a brick tongue opposite the brick groove. The circumferential brick tongue and brick groove enable the firebricks 21 in the two adjacent layers to tightly engage with each other, thereby improving the overall stability of the partition wall 20. In some other embodiments of the present application, the upper surface of the lower firebrick 21 in the two adjacent layers of firebricks 21 is provided with a brick tongue, and the lower surface of the upper firebrick 21 in the two adjacent layers of firebricks 21 is provided with a brick groove opposite the brick tongue.

[0050] In some embodiments of the present application, the distance between the two adjacent partition walls 20 can be equal.

[0051] In the embodiments of the present application, the distance between the two adjacent partition walls 20 is equal, so that the size of the sub-ramp port A is equal, thereby further improving the uniformity of the airflow through the ramp port. In actual applications, the distance between the two adjacent partition walls 20 is designed according to the strength of the masonry and the requirements of the ramp flow cross section.

[0052] In some embodiments of the present application, as shown in Figure 1 and Figure 2 , the number of partition walls 20 in each partition wall group can be two, three, or more.

[0053] In some embodiments of the present application, the partition wall 20 and the inner wall of the corbel structure 10 form a preset included angle a, and the preset included angle a is 50° to 70°.

[0054] In the embodiments of the present application, the firebricks 21 can be, for example, silicon-aluminum firebricks, clay bricks, high-aluminum firebricks, and magnesia firebricks. Specifically, the firebricks 21 can be mullite-silicon carbide bricks, which are resistant to high temperature, sudden cooling and heating, and have good thermal shock resistance, thereby further improving the stability of the partition wall 20 and prolonging the service life of the partition wall 20.

[0055] The second aspect of the embodiments of the present application provides a dry quenching system, which includes the ramp structure of the dry quenching furnace in the above embodiments.

[0056] In the embodiments of the present application, as shown in Figure 1 and Figure 2 , Figure 4As shown, the plurality of partition walls 20 are arranged along the height direction of the CDQ furnace between two adjacent corbel structures 10 to divide the chute into a plurality of sub-chutes A, that is, to form a plurality of gas flow channels. For the same size CDQ, under the condition that the total area of the chute outlet is the same, compared with a single chute, by arranging the plurality of partition walls 20, the thickness of the coke accumulated at the inlet of the circulating gas discharge channel is reduced by the plurality of partition walls 20, thereby reducing the resistance of the accumulated coke to the cooling gas. In addition, under the condition that the area of the chute is the same, the gas flow distribution of the multi-chute structure is more uniform, and the maximum flow rate through the multi-chute is less than the maximum flow rate through the double-chute or single-chute structure. The gas flow rate distribution through the coke layer is closer to the average flow rate through the surface of the coke layer, the maximum upward lift of the circulating gas on the coke is reduced, the ability to suppress the coke from floating is stronger, the CDQ processing capacity is greatly increased, and the market demand for large-scale CDQ is met. By arranging the partition walls 20 between the adjacent corbel structures 10, the stress distribution of the corbel structure 10 of the multi-chute CDQ furnace is more uniform, further increasing the structural strength and stability of the corbel structure 10, and ensuring the overall strength of the chute area of the large-scale CDQ furnace.

[0057] As shown in Figure 4 , Figure 7 and Figure 8 , the partition wall 20 includes a plurality of layers of refractory bricks 21, and the opposite two refractory bricks 21 between the adjacent two layers of refractory bricks 21 are connected by a circumferential brick groove-tongue structure, so that the adjacent two layers of refractory bricks 21 are engaged with each other, thereby achieving tight connection and preventing interlayer slip. The two adjacent refractory bricks 21 in each layer are connected by a radial brick tongue-brick groove structure, thereby achieving tight engagement between the two adjacent refractory bricks 21 in each layer, effectively preventing coke from seeping into the brick joints and expanding the brick joints, preventing slip between the layers of refractory bricks 21 and between the two adjacent refractory bricks 21 in each layer, improving the stability of the partition wall 20, prolonging the service life of the chute structure, and further prolonging the service life of the CDQ system.

[0058] The above only describes the preferred embodiments of the present application and is not intended to limit the protection scope of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A chute structure for a dry quenching furnace, used in the chute area of ​​a dry quenching furnace, characterized in that: include: A plurality of bracket structures (10), wherein the plurality of bracket structures (10) are evenly distributed on the side wall of the dry quenching furnace along a circumferential direction; A plurality of partition wall groups are provided between two adjacent corbel structures (10), and the partition wall group comprises a plurality of partition walls (20). The plurality of partition walls (20) are spaced apart along the height direction of the dry quenching furnace between the two adjacent corbel structures (10) to divide the ramp into a plurality of sub-ramp openings; the partition walls (20) are connected to the corbel structures (10) via a connecting assembly (30); the partition walls (20) comprise multiple layers of refractory bricks (21), and the refractory bricks (21) of two adjacent layers are engaged with each other via a circumferential brick tongue and brick groove structure; and the two adjacent refractory bricks (21) of each layer are engaged with each other via a radial brick tongue and brick groove structure.

2. The chute structure of the CDQ furnace according to claim 1, characterized in that: The connection assembly (30) includes a plurality of connection bricks (31), the side of the bracket structure (10) close to the partition wall (20) is provided with a first card slot (11), the side of the partition wall refractory brick (21) close to the bracket structure (10) is provided with a second card slot (211), and the connection brick (31) is partially located in the first card slot (11), and the other part is located in the second card slot (211).

3. The chute structure of the CDQ furnace according to claim 2, characterized in that: The first clamping groove (11) and the second clamping groove (211) have the same shape and are arc-shaped grooves.

4. The chute structure of the CDQ furnace according to claim 2, characterized in that: The connecting assembly (30) further comprises a metal plate (32) and a fiberboard (33), wherein the fiberboard (33) is attached to the side of the partition wall (20) close to the corbel structure (10), and the metal plate (32) is arranged on the side of the fiberboard (33) close to the corbel structure (10), and fire clay (34) is filled between the corbel structure (10) and the metal plate (32).

5. The chute structure of the CDQ furnace according to any one of claims 1 to 4, characterized in that: The upper surface of the topmost refractory brick (21) is a plane surface, and the lower surface is an arched surface. The refractory bricks (21) from the second topmost layer to the bottommost layer are arched bricks.

6. The chute structure of the CDQ furnace according to any one of claims 1 to 4, characterized in that: In the two adjacent layers of refractory bricks (21) of the partition wall, the upper surface of the refractory bricks (21) in the lower layer is provided with a brick groove, and the lower surface of the refractory bricks (21) in the upper layer is provided with a brick tongue opposite to the brick groove.

7. The chute structure of the CDQ furnace according to any one of claims 1 to 4, characterized in that: In the two adjacent layers of refractory bricks (21) of the partition wall, the upper surface of the refractory bricks (21) in the lower layer is provided with a brick tongue, and the lower surface of the refractory bricks (21) in the upper layer is provided with a brick groove opposite to the brick tongue.

8. The chute structure of the CDQ furnace according to any one of claims 1 to 4, characterized in that: There is a preset angle between the partition wall (20) and the inner wall of the corbel structure (10), and the preset angle is 50° to 70°.

9. The chute structure of the CDQ furnace according to any one of claims 1 to 4, characterized in that: The radial brick tongue and brick groove structure is arranged on the top of the refractory brick (21).

10. A dry quenching system, characterized in that: The invention comprises a ramp structure of a dry quenching furnace as described in any one of claims 1 to 9.

Images