Dry quenching circulating air duct supporting wall

Abstract

The utility model discloses a dry quenching circulating air duct supporting wall which comprises a supporting wall assembly which covers the outer side of a dry quenching circulating air duct and is used for supporting and protecting, the front end of the dry quenching circulating air duct is connected with a dust removal opening, and the outer side of the bottom of the supporting wall assembly is connected with a bottom supporting assembly. The device has the beneficial effects that the supporting wall assembly is arranged, so that the device can safely cover the outer side of a dry quenching circulating air duct, the first supporting wall layer provides a long-time high-temperature-resistant supporting effect for the device, the second supporting wall layer provides a heat insulation effect for the device, and the third supporting wall layer provides mechanical support for the outermost side; and gaps between the supporting wall assemblies provide a certain expansion space for thermal expansion, the safety of the device is improved, and the bottom supporting assembly is arranged, so that the device works more stably under the supporting of the straight supporting rods and the inclined supporting rods.

Description

Technical Field

[0001] This utility model relates to the field of dry quenching coke oven technology, specifically a dry quenching coke circulating air duct support wall. Background Technology

[0002] With the steel industry's increasing demands for coke quality and growing environmental awareness, dry quenching technology has developed rapidly. Traditional wet quenching methods suffer from numerous problems, such as water waste, large amounts of phenol-cyanide wastewater, and dust pollution. Dry quenching, however, achieves efficient cooling of coke through direct heat exchange between inert gas and hot coke, reducing pollutant emissions and recovering the sensible heat of the red-hot coke for power generation. This offers significant energy-saving and environmental advantages. The dry quenching process is constantly being improved and innovated, with improvements including optimization of the furnace structure, charging devices, and discharge devices. These improvements make the dry quenching process more efficient and stable. As a crucial component of the dry quenching system, the design of the supporting walls for the circulating air duct also needs to keep pace with technological advancements to meet new requirements. To meet the growing demands of steel production, dry quenching units are trending towards larger scales. Larger dry quenching units have greater processing capacity, with single units capable of handling hundreds or even thousands of tons of coke per hour. This means a significant increase in the size and length of the circulating air duct, as well as a corresponding increase in internal gas flow and pressure. Therefore, higher requirements are placed on the strength, stability, and sealing of the circulating air duct support walls. Existing support wall designs and materials may not meet the operating conditions of large-scale installations, necessitating the development of new support wall structures and materials to adapt to these changes.

[0003] In publication number CN203079904U, this utility model discloses a support wall for the circulating air duct of a dry quenching coke oven, located directly above the "ox horn" shape inside the circulating air duct. The support wall includes a decorative wall section and an arched wall section. The arched wall section spans the walls on both sides of the circulating air duct in an arc shape; the decorative wall section is located above the arched wall. This support wall compensates for the weakest point of the circulating air duct, enhances the stability of the inner wall of the circulating air duct, and improves its service life. The foamed polyethylene boards used on both sides of the support wall ensure sufficient and uniform expansion during heating, resulting in structural stability. The support wall's placement at the top of the circulating air duct reduces resistance within the duct. The arched wall section prevents the support wall from collapsing under both hot and cold conditions. This support wall has minimal impact on production and fully meets the requirements of dry quenching coke oven production operations.

[0004] The aforementioned support wall does not have a pre-set design for thermal expansion due to the high-temperature environment during operation. This could lead to damage to the support wall due to prolonged thermal expansion. Furthermore, the support structure is relatively simple. Therefore, there is an urgent need for a support wall for the dry quenching coke circulation air duct that offers higher safety and more stable support. Utility Model Content

[0005] The purpose of this invention is to provide a support wall for a dry quenching coke circulating air duct, thereby solving the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a support wall for a dry quenching circulating air duct, comprising: a support wall assembly covering the outside of the dry quenching circulating air duct for support and protection, wherein a dust removal port is connected to the front end of the dry quenching circulating air duct, and a bottom support assembly is connected to the bottom outside of the support wall assembly.

[0007] Preferably, the support wall assembly includes a first support wall layer, and a third support wall layer is insulated and covered on the outside of the first support wall layer by a second support wall layer. By providing the support wall assembly, the device can be safely covered on the outside of the dry quenching circulating air duct.

[0008] Preferably, the first supporting wall layer is made of high-alumina brick material, the thickness of the second supporting wall layer is half that of the first supporting wall layer, the second supporting wall layer is made of ceramic fiber, the first supporting wall layer provides it with long-term high-temperature resistance support, and the second supporting wall layer provides it with heat insulation effect.

[0009] Preferably, the thickness of the third supporting wall layer is one-tenth of that of the first supporting wall layer, the third supporting wall layer is made of high-strength steel, and the third supporting wall layer provides mechanical support for the outermost side.

[0010] Preferably, the support wall assembly is provided with expansion joints at regular intervals, and the expansion joints of the support wall assembly are filled with refractory fibers. The gaps between the support wall assemblies provide a certain expansion space for thermal expansion, thereby increasing the safety of the device.

[0011] Preferably, the bottom support assembly includes a ring-shaped support wall, which is welded together by straight support rods, inclined support rods, and the support wall assembly. By providing the bottom support assembly, the device can operate more stably under the support of the straight support rods and inclined support rods.

[0012] Preferably, the straight support rod is connected to the outside of the support wall assembly in a straight line, and the inclined support rod is connected to the bottom of the outside of the support wall assembly at an inclined upward direction, so as to ensure a more stable support effect for the bottom support assembly.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up the support wall assembly, the device can be safely covered on the outside of the dry quenching circulating air duct. The first support wall layer provides it with long-term high-temperature resistance support, the second support wall layer provides it with heat insulation, and the third support wall layer provides mechanical support for the outermost side. The gaps between the support wall assemblies provide a certain expansion space for thermal expansion, increasing the safety of the device. By setting up the bottom support assembly, the device can work more stably under the support of the straight support rod and the inclined support rod. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the inclined front surface of the support wall for the dry quenching circulating air duct of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of the rear inclined surface of the support wall for the dry quenching circulating air duct of this utility model;

[0016] Figure 3 This is a schematic diagram of the upper part of the support wall component in the support wall of the dry quenching circulating air duct of this utility model;

[0017] Figure 4 This is a structural schematic diagram of the cross-section of the support wall component in the dry quenching circulating air duct support wall of this utility model;

[0018] Figure 5 This is a schematic diagram of the bottom support component in the support wall of the dry quenching coke circulating air duct of this utility model.

[0019] In the diagram: 1. Dry quenching circulating air duct; 2. Support wall assembly; 21. First support wall layer; 22. Second support wall layer; 23. Third support wall layer; 3. Dust removal port; 4. Bottom support assembly; 41. Circular support wall; 42. Vertical support rod; 43. Angled support rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 and Figure 2 A dry quenching circulating air duct support wall includes: a support wall assembly 2 covering the outside of the dry quenching circulating air duct 1 for support and protection; a dust removal port 3 connected to the front end of the dry quenching circulating air duct 1; and a bottom support assembly 4 connected to the bottom outside of the support wall assembly 2.

[0022] Implementation 1: Please refer to Figure 1 and Figure 4 To enhance the safety of the device during operation, the support wall assembly 2 includes a first support wall layer 21. The outside of the first support wall layer 21 is insulated by a second support wall layer 22, and a third support wall layer 23 is provided. By installing the support wall assembly 2, the device can be safely covered on the outside of the dry quenching circulating air duct 1. The first support wall layer 21 is made of high-alumina brick, which is resistant to high temperatures and corrosion. The second support wall layer 22 is half the thickness of the first support wall layer 21 and is made of ceramic fiber. As an insulation layer, the ceramic fiber effectively reduces the heat transferred from high-temperature gas to the outside of the support wall, lowers the temperature of the steel structure, and extends its service life. The first support wall layer 21 provides long-term high-temperature support, while the second support wall layer 22 provides insulation. The third support wall layer 23 is one-tenth the thickness of the first support wall layer 21 and is made of high-strength steel. Q345B high-strength steel is a low-alloy high-strength structural steel widely used in construction, bridges, ships, machinery manufacturing, and industrial equipment such as dry quenching systems. Its excellent mechanical properties and weldability make it an ideal material for high-temperature and high-load structures such as support walls. The third support wall layer 23 provides mechanical support for the outermost layer. Expansion joints are provided at intervals in the support wall assembly 2. The expansion joints of the support wall assembly 2 are filled with refractory fibers. The gaps between the support wall assemblies 2 provide a certain expansion space for thermal expansion, thereby increasing the safety of the device.

[0023] Implementation 2: Please refer to Figure 1 and Figure 5 To ensure a more stable and safer support for the device, the bottom support assembly 4 includes an annular support wall 41. The annular support wall 41 is welded to the support wall assembly 2 via a straight support rod 42, an inclined support rod 43, and the support wall assembly 2. By providing the bottom support assembly 4, the device can operate more stably under the support of the straight support rod 42 and the inclined support rod 43. The straight support rod 42 is connected to the outside of the support wall assembly 2 in a straight line, and the inclined support rod 43 is connected to the bottom of the outside of the support wall assembly 2 at an angle, thus ensuring a more stable support effect for the bottom support assembly 4.

[0024] Working principle: The modular installation method is adopted. First, the third support wall layer 23 is installed, then the first support wall layer 21 and the second support wall layer 22 are laid. During the installation process, the masonry quality of the first support wall layer 21, the setting of expansion joints between support wall components 2, and the connection strength of the third support wall layer 23 must be strictly controlled. Finally, the bottom support component 4 is installed by welding the straight support rod 42 and the oblique support rod 43 at the bottom of the outer side.

[0025] The standard parts used in this embodiment can be purchased directly from the market, while the non-standard structural parts described in the specification and drawings can be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A support wall for a dry quenching coke circulating air duct, characterized in that, include: A support wall assembly (2) is used for support and protection on the outside of the dry quenching circulating air duct (1). The front end of the dry quenching circulating air duct (1) is connected to a dust removal port (3), and the bottom outside of the support wall assembly (2) is connected to a bottom support assembly (4).

2. The dry quenching coke circulating air duct support wall according to claim 1, characterized in that: The support wall assembly (2) includes a first support wall layer (21), and the outside of the first support wall layer (21) is covered with a third support wall layer (23) through a second support wall layer (22) for heat insulation.

3. The dry quenching coke circulating air duct support wall according to claim 2, characterized in that: The first support wall layer (21) is made of high alumina brick material, the second support wall layer (22) is half the thickness of the first support wall layer (21), and the second support wall layer (22) is made of ceramic fiber.

4. The dry quenching coke circulating air duct support wall according to claim 2, characterized in that: The thickness of the third support wall layer (23) is one-tenth that of the first support wall layer (21), and the third support wall layer (23) is made of high-strength steel.

5. The dry quenching coke circulating air duct support wall according to claim 1, characterized in that: The support wall assembly (2) is provided with expansion joints at intervals, and the expansion joints of the support wall assembly (2) are filled with fire-resistant fibers.

6. The dry quenching circulating air duct support wall according to claim 1, characterized in that: The bottom support assembly (4) includes an annular support wall (41), which is welded together by a straight support rod (42), an oblique support rod (43) and a support wall assembly (2).

7. A dry quenching coke circulating air duct support wall according to claim 6, characterized in that: The straight support rod (42) is connected to the outside of the support wall assembly (2) in a straight direction, and the oblique support rod (43) is connected to the bottom of the outside of the support wall assembly (2) in an oblique upward direction.

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