Coke oven branch flue structure
By laying an insulation layer on the side walls and top of the coke oven branch flue and using multiple layers of insulation bricks and rock wool boards, the problem of high temperature environment around the coke oven branch flue was solved, achieving a low-cost cooling effect and improved safety.
Patent Information
- Application Number
- CN202422296785.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The ambient temperature around the coke oven flue is high and difficult to cool down, resulting in high construction costs and safety hazards, affecting work efficiency.
Insulation is laid on the side walls and top of the branch flue, using multiple layers of insulation bricks and rock wool boards, fixed by fixing components and filled with sealing materials to reduce heat transfer.
The ambient temperature around the smoke duct is lowered, work efficiency is improved, and construction costs and safety hazards are reduced.
Smart Images
Figure CN223422615U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of building construction, in particular to a coke oven flue branch structure. Background Art
[0002] In existing technologies, the coke oven, as the heart of the coking project, is a large single-unit heating device. The coke oven produces a large amount of waste gas during the coking production process. The waste gas discharged from the coke oven passes through the flue bend → branch flue → collecting flue → main flue → desulfurization and denitrification → chimney → discharged into the atmosphere. The temperature of the branch flue can reach as high as 400°C, which leads to an increase in the temperature of the surrounding working environment. In addition, due to the poor air flow in the indoor working environment around the branch flue, cooling is difficult and the cooling construction cost is high. The high temperature environment poses a safety risk to the production and operation of personnel, and is prone to physical discomfort and reduced work efficiency. There are technical problems such as the high temperature in the branch flue leading to a high temperature in the surrounding working environment and difficulty in cooling, resulting in high cooling construction costs. Low-cost cooling construction cannot achieve a better cooling effect, which is easy to cause physical discomfort to the workers and affect work efficiency. Utility Model Content
[0003] In order to solve the above technical problems, the utility model provides a coke oven branch flue structure, which is particularly suitable for adopting a low-cost insulation structure, effectively reducing heat transfer from the inside to the outside of the branch flue, improving the surrounding working environment, thereby improving work efficiency and reducing operational safety hazards.
[0004] The technical solution adopted by the utility model is: a coke oven branch flue structure, including a branch flue connected to the coke oven and having a high-temperature cavity, the side walls of the branch flue are paved with a side wall insulation layer and the top of the branch flue is paved with a top insulation layer to reduce heat transfer from the inside to the outside of the branch flue.
[0005] Furthermore, the top heat insulation layer includes multiple layers of heat insulation bricks laid on the outer surface of the top of the branch flue, and concrete is poured on the multiple layers of heat insulation bricks to form a protective layer.
[0006] Furthermore, the side wall insulation layer includes a plurality of fixed components spaced apart on the outside of the branch flue side wall and an insulation board laid on the branch flue side wall through the fixed components, and sealing materials are filled between adjacent fixed components to support the insulation board.
[0007] Furthermore, a plurality of fixing components are arranged at intervals along the vertical direction, each fixing component includes a square tube arranged along the horizontal direction and a plurality of embedded parts for fixing the square tube and arranged at intervals along the horizontal direction, and each embedded part is detachably connected to the side wall of the branch flue.
[0008] Furthermore, the insulation board and the sealing material both include rock wool to enhance the thermal insulation effect.
[0009] Further, the branch flue is arranged at the side of the coke oven basement and reduces the heat transfer from the branch flue to the coke oven basement through the side wall heat insulation layer.
[0010] Further, the branch flue is arranged at the side of the coke oven basement and reduces the heat transfer from the branch flue to the coke oven basement through the side wall heat insulation layer.
[0011] The coke oven branch flue surrounding work environment temperature improving device has the advantages and positive effects that: due to the above technical scheme, the coke oven branch flue surrounding work environment temperature can be improved, the work efficiency is improved, and the operation safety hidden danger is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 is a structural schematic diagram of an embodiment of the utility model
[0013] Figure 2 is a structural schematic diagram of a fixed assembly in an embodiment of the utility model
[0014] Figure 3 is a use scene of an embodiment of the utility model
[0015] In the drawings:
[0016] 1, cavity 2, branch flue 3, side wall heat insulation layer
[0017] 4, top heat insulation layer 5, fixed assembly 6, coke oven basement
[0018] 7, coke side operation room 8, machine side operation room 9, coke oven basement ground
[0019] 31, heat insulation plate 32, sealing material 41, heat insulation brick
[0020] 42, protective layer 43, water retaining wall 51, square tube
[0021] 52, embedded part 53, bolt 21, elbow DETAILED DESCRIPTION
[0022] The embodiments of the utility model will be described below in conjunction with the drawings, and the described embodiments are only part of the embodiments of the utility model, not all the embodiments.
[0023] The embodiments of the utility model will be described below in conjunction with the drawings, and the described embodiments are only part of the embodiments of the utility model, not all the embodiments.
[0024] The embodiments described below with reference to the accompanying drawings are illustrative and intended only to explain the present invention and are not to be construed as limiting the present invention. In the description of the present invention, it should be understood that terms such as "install," "connect," and "fix" are to be understood broadly, encompassing both direct and indirect connection, installation, or fixation, and the present invention is not intended to limit these terms.
[0025] In the description of the present invention, it should be understood that the terms "longitudinal", "horizontal", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure or unit referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0026] like Figures 1 to 3 As shown, a schematic diagram of an embodiment of a coke oven branch flue structure of the utility model includes a branch flue 2 connected to the coke oven and having a high-temperature cavity 1, the side walls of the branch flue 2 are paved with a side wall insulation layer 3 and the top of the branch flue 2 is paved with a top insulation layer 4 to reduce heat transfer from the inside to the outside of the branch flue 2.
[0027] In this embodiment, the branch flue 2 is connected to the coke oven via an elbow 21. In this embodiment, the longitudinal section of the cavity is arched, which can better disperse the high temperature and high pressure of the exhaust gas discharged from the coke oven, thereby reducing the difficulty of improving the ambient temperature around the branch flue 2.
[0028] In this embodiment, the top insulation layer 4 comprises multiple layers of insulation bricks 41 laid on the outer surface of the top of the branch flue 2. Concrete is poured over the multi-layer insulation bricks 41 to form a protective layer 42. In this embodiment, the multi-layer insulation bricks 41 are two layers of high-strength diatomaceous earth insulation bricks, and the protective layer 42 is a 35mm thick C20 fine stone concrete surface layer. This embodiment can achieve a relatively low cost while reducing heat transfer from the branch flue 2 to the outside of its top, thereby improving the working environment temperature adjacent to the top of the branch flue 2.
[0029] In this embodiment, the side wall insulation layer 3 includes a plurality of fixed components 5 spaced apart on the outside of the side wall of the branch flue 2 and an insulation board 31 laid on the side wall of the branch flue 2 through the fixed components 5. Sealing material 32 is filled between adjacent fixed components 5 to support the insulation board 31.
[0030] In this embodiment, the heat insulation board 31 and the sealing material 32 both include rock wool to improve the heat insulation effect.
[0031] In this embodiment, multiple fixing components 5 are arranged at intervals along the vertical direction, and each fixing component 5 includes a square tube 51 arranged along the horizontal direction and multiple embedded parts 52 for fixing the square tube 51 and arranged at intervals along the horizontal direction outside the side wall of the branch flue 2. Each embedded part 52 is detachably connected to the side wall of the branch flue 2.
[0032] In this embodiment, each embedded part 52 is connected to the square tube 51 to stabilize the square tube 51, and the heat insulation board 31 is fixed to the side wall of the branch flue 2 by multiple embedded parts 52. The utility model can ensure the stability of the fixation of the heat insulation board 31, and prevent the heat insulation board 31 from being affected by gravity, resulting in dislocation and gaps after long-term use, thereby affecting the heat insulation effect; the gaps between the square tube 51, the heat insulation board 31 and the outer side wall of the branch flue 2 are densely filled with sealing material 32, which not only supports the heat insulation board 31, but also reduces the hidden dangers of bubbling and deformation of the heat insulation board 31 caused by the influence of temperature and humidity, thereby extending the service life, ensuring the heat insulation effect, reducing the later maintenance cost, and better achieving the overall low cost to improve the production working environment; Compared with other shapes such as round tubes, the square tube 51 can be installed in an easier and faster manner to realize the installation of the insulation board 31 and the filling of the sealing material 32, and ensure that the insulation board 31 is tightly fitted with the square tube 51 during installation to reduce gaps and facilitate the tight filling of the sealing material 32. The operation is simple and avoids the influence of the insulation effect due to differences in construction personnel; the width of the square tube 51 is the same as the thickness of the filling sealing material 32 to facilitate and quickly construct while ensuring a dense filling effect. The filling and insulation effects can be guaranteed by different construction personnel. In this embodiment, the sealing material 32 and the insulation board 31 are both made of rock wool material, which achieves a stable structure and a double insulation effect at the same time, thereby better improving the production and working environment around the branch flue 2. In this embodiment, each embedded part 52 is fixed to the side wall of the branch flue 2 by an expansion bolt 53, the sealing material 32 is 50mm thick rock wool, and the square tube 51 adopts a square tube with the same thickness of 50mm, which can quickly fill the gap and ensure that the filling effect is dense; the insulation board 31 is a 100mm rock wool insulation board, and the embedded part 52 can be angle steel, square steel, etc. The embedded part 52 can be pre-positioned in advance before the square tube 51, the insulation board 31 and the sealing material 32 are installed, which is convenient for the rapid installation of the square tube 51 frame, improves construction efficiency and thus reduces construction labor costs. The embedded part 52 can also avoid repeated disassembly caused by misalignment of the square tube 51 and the insulation board 31, avoids the hidden danger of increased cost caused by secondary construction, and can improve construction efficiency and construction quality, better ensure the use of low cost to achieve insulation effect, and improve the surrounding environment of the branch flue 2.
[0033] The utility model adopts universal construction materials, which can reduce the heat transfer from the inside to the outside of the sub-flue 2 at a relatively low cost, improve the temperature of the surrounding production environment, reduce construction safety hazards, better enhance the experience of personnel during the production process, and thus improve work efficiency.
[0034] In this embodiment, the branch flue 2 is arranged at the side of the coke oven basement 6 and the side wall insulation layer 3 is used to reduce heat transfer from the branch flue 2 to the coke oven basement 6 .
[0035] In this embodiment, the branch flue 2 is arranged at the lower part of the coke side operating room 7 / machine side operating room 8 and the heat transfer from the branch flue 2 to the coke side operating room 7 / machine side operating room 8 is reduced through the top insulation layer 4.
[0036] The utility model utilizes the concrete of the branch flue 2 as a carrier, forms a top insulation layer 4 by paving with high-strength diatomaceous earth insulation bricks, adopts rock wool board insulation board and fills the installation gaps with rock wool material to form a side wall insulation layer 3 with double insulation effect. The utility model can improve the ambient temperature of the main working and production space in the coking process, namely the coke oven basement 6, the coke side operation room 7, and the machine side operation room 8 at low cost, thereby improving the overall coking working environment, greatly reducing the safety hazards such as discomfort to personnel caused by high-temperature work, and improving the coking work efficiency. The utility model ensures the installation effect of the insulation board 31 by fixing the component 5, thereby ensuring the insulation quality, improving the service life of the insulation board 31, reducing the later maintenance cost, and ensuring that the overall cost from construction to later maintenance is controlled. The present invention can improve the high-temperature working environment problem around the branch flue 2 at a relatively low construction cost. In other embodiments, the branch flue 2, the coke oven basement 6, the coke side operating room 7, and the machine side operating room 8 can also be structurally adaptively adjusted according to needs, and the side wall insulation layer 3 and the top insulation layer 4 are laid on the outside of the branch flue 2 to improve the ambient temperature around the branch flue 2. The present invention can also be promoted and applied to other pipeline construction to achieve better insulation.
[0037] The construction method of the utility model includes the following steps:
[0038] When the side wall insulation layer 3 needs to be constructed, the main steps are as follows:
[0039] S1. Preparation: Determine the amount of materials such as square tubes 51, multiple embedded parts 52, sealing material 32 (50mm rock wool), and insulation board 31 (100mm rock wool insulation board) according to construction requirements, and place them at the construction site for standby use according to the amount.
[0040] S2. Set up construction operation platforms: At the places where the side wall insulation layer 3 needs to be constructed, in this embodiment, on both sides of the coke oven basement 6, make two groups of construction operation platforms to be used for the construction of the branch flue 2 on the machine side and the coke side respectively, and each group includes two movable operation platforms so that the branch flue 2 on each side can be constructed simultaneously by two groups of construction workers to improve construction efficiency. Fences and stairs are added. After the construction is completed, the platforms are fully covered with scaffolding.
[0041] S3. Laying the side wall insulation layer 3: According to the requirements of the construction drawings, the construction workers lay out the lines outside the side wall of the branch flue 2, preset and install multiple embedded parts 52 through expansion bolts 53; after the embedded parts construction is completed and accepted, the corresponding square tubes 51 are installed through multiple positioned embedded parts 52. This embodiment uses a 50mm wide square tube. In this embodiment, the square tubes 51 located at the top and the bottom need to be flush with the top of the adjacent coke oven basement 6 and the coke oven basement floor 9 respectively to locate the vertical height of the subsequent laying of the insulation board 31, to ensure that the insulation board 31 can completely block and insulate the side wall of the branch flue 2 adjacent to the coke oven basement 6; after the square tube 51 is fixed, it is filled with sealing material 32 that is adapted to the size of the square tube 51. In this embodiment, 50mm thick rock wool is used for filling. The sealing material 32 needs to be close to the corresponding side wall of the branch flue 2 and ensure that the facade is flat so that it can be tightly installed with the insulation board 31 later Installation; in a specific construction scenario, construction can be divided into zones to improve construction efficiency. In this embodiment, the first group of personnel can first install multiple embedded parts 52 and square tubes 51 in the first area and fill the gaps with sealing material 32, namely 50 mm thick rock wool. When the first group of personnel completes the construction, they can go to the next area to carry out the above construction content. The second group of personnel will lay insulation boards 31, namely rock wool insulation boards, in the first area. During construction, the insulation boards 31 need to be tightly attached to the square tubes 51 and the sealing materials 32 to ensure construction quality. The insulation boards 31 are cut according to construction requirements and the positioning dimensions of the square tubes 51 to ensure that the lower part of the insulation board 31 is flush with the square tube 51 at the bottom to be flush with the coke oven basement floor 9, and the upper part of the insulation board 31 is flush with the square tube 31 at the top to ensure the insulation effect of the side walls of the branch flue 2. After the second group of personnel completes the above construction, they will go to the next area to continue laying the insulation boards 31.
[0042] When the top insulation layer 4 needs to be constructed, the main steps are as follows:
[0043] S1. Preparation: Determine the amount of insulation bricks 41, i.e., high-strength diatomaceous earth insulation bricks, clay fireclay, ordinary Portland cement, medium sand and other materials according to construction requirements, and place them at the end platform in a reasonable amount.
[0044] S2. Build retaining wall 43 and pre-embed drainage pipes: Construction of the retaining wall and drainage pipes at the top of the coke oven flue duct 2 begins at the platform, with construction simultaneously on both the engine and coke oven sides. Retaining wall 43 is built on the side of the flue duct 2 located near the furnace body, located on both the engine and coke oven sides. Before construction, the ground should be cleaned, the retaining wall outline should be marked, and a clear chalk line should be drawn on the ground. During construction, the appropriate number of drainage pipes should be pre-embedded according to the spacing requirements. After completion, cement mortar should be applied to three sides of the masonry.
[0045] S3, laying of heat-insulating bricks 41: Laying of heat-insulating bricks 41 needs to start from the top platform of the branch flue 2. The machine side and the coke side can be laid at the same time. The materials are transported from the end platform to the laying point by a transport vehicle. The starting position of the laying of heat-insulating bricks 41 and the starting position of the transportation of the required construction materials are respectively set at the two ends of the top of the branch flue. The laying direction of heat-insulating bricks 41 is opposite to the transportation direction of the construction materials to ensure that the laying quality is not affected by the transportation pressure of the construction materials and to protect the newly built masonry from damage. Before laying, clean the top of the branch flue 2 and sprinkle appropriate amount of water to ensure that the top surface of the branch flue 2 is warm during laying. Laying of heat-insulating bricks 41 should be done in two horizontal layers. In this embodiment, the height of each layer is 70mm. The mortar should be filled during laying. The fullness of the mortar should meet the construction requirements. In this embodiment, it should reach 95%. When laying, the level ruler should be used to check while laying to ensure the flatness. In this embodiment, the flatness should not exceed 5mm.
[0046] S4. Construction of protective layer 42: According to construction requirements, the C20 fine stone concrete required for construction in this embodiment is also constructed from the intermediate platform, and the materials are transported from the end platform to the construction site by a transport vehicle. The transport vehicle can travel by laying multiple wooden boards on the top of the laid high-strength insulation bricks 41 to facilitate the passage of the transport vehicle. In the process of transporting concrete back and forth, the transport vehicle needs to drive the wheels on the corresponding wooden boards to avoid directly running on the surface of the laid high-strength insulation bricks 41. Passing on the wooden boards can increase the contact area, better protect the newly laid insulation bricks 41, reduce the pressure effect on the newly laid high-strength insulation bricks 41, and reduce the hidden danger of deformation of the multi-layer insulation bricks 41 after laying. The starting position for laying the protective layer 42 and the starting position for transporting the required construction materials are respectively set at the two ends of the top of the branch flue, and the laying direction of the protective layer 42 is opposite to the transportation direction of the construction materials to ensure that the laying quality is not affected by the transportation pressure of the construction materials, improve the construction quality, reduce the secondary repair cost, ensure the construction cost, and improve the construction quality. After the concrete construction is completed, it is leveled and compacted.
[0047] The above embodiments of the present invention are described in detail. However, the above contents are only preferred embodiments of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.
Claims
1. A coke oven flue branch structure, comprising a flue branch communicating with the coke oven and having a high-temperature cavity, characterized in that: A side wall heat insulation layer is laid on the side wall of the branch flue and a top heat insulation layer is laid on the top of the branch flue to reduce heat transfer from the inside to the outside of the branch flue; The top heat insulation layer comprises multiple layers of heat insulation bricks laid on the outer surface of the top of the branch flue, and concrete is poured on the multiple layers of the heat insulation bricks to form a protective layer; The side wall insulation layer includes a plurality of fixed components spaced apart on the outside of the branch flue side wall and an insulation board laid on the branch flue side wall through the fixed components. Sealing material is filled between adjacent fixed components to support the insulation board.
2. The coke oven flue duct structure according to claim 1, characterized in that: Multiple fixing components are arranged at intervals along the vertical direction, each fixing component includes a square tube arranged along the horizontal direction and multiple embedded parts for fixing the square tube to be arranged at intervals along the horizontal direction, and each embedded part is detachably connected to the side wall of the branch flue.
3. The coke oven flue duct structure according to claim 1, characterized in that: The insulation board and the sealing material both include rock wool to enhance the thermal insulation effect.
4. The coke oven flue duct structure according to claim 1, characterized in that: The branch flue is arranged at the side of the coke oven basement and the side wall insulation layer reduces heat transfer from the branch flue to the coke oven basement.
5. The coke oven flue duct structure according to claim 1, characterized in that: The branch flue is arranged at the lower part of the coke side / machine side operating room and the heat transfer from the branch flue to the coke side / machine side operating room is reduced through the top heat insulation layer.