Enhanced refractory high efficiency heat shield coke drum

Abstract

The utility model discloses reinforced refractory high -efficient heat -insulating coke pot belongs to coke pot technical field, including refractory layer, high -efficient heat -insulating layer, structure support layer and outer protective layer, the refractory layer is by nanometer composite corundum mullite refractory brick modularization splicing and is formed, high -efficient heat -insulating layer sets up the outside of refractory layer, high -efficient heat -insulating layer includes by inside to outside setting lightweight mullite insulating brick layer and nanometer hole aerogel heat insulating material layer in proper order, structure support layer sets up the outside of high -efficient heat -insulating layer, outer protective layer sets up the outside of structure support layer, through the setting of high -efficient heat -insulating layer, lightweight mullite insulating brick layer has good high temperature resistance and heat -insulating effect, can effectively block high temperature from refractory layer to outside transmission, nanometer hole aerogel heat insulating material layer can greatly reduce gas conduction heat dissipation to improve the heat -insulating effect of coke pot significantly.

Description

Technical Field

[0001] This utility model belongs to the field of coke oven technology, specifically relating to a high-efficiency heat-insulating coke oven made of reinforced refractory material. Background Technology

[0002] In the coking industry production process, the coke can is a core piece of equipment connecting the coking and ironmaking processes. Its main function is to hold high-temperature coke (800-1200℃) ejected from the coke oven and transfer it to the dry quenching unit or blast furnace feeding system via coke can cars, elevators, and other conveying systems. The refractory performance, insulation effect, structural stability, and service life of the coke can directly determine the continuity of coking production, energy utilization rate, and operational safety. Its performance defects can significantly affect the company's production efficiency and overall operating costs.

[0003] Currently, most traditional coke ovens widely used in the industry are made of high-alumina refractory bricks or ordinary corundum mullite bricks. They have a simple structure and limited heat insulation performance. The large amount of heat loss inside the coke oven results in significant energy waste and easily poses a risk of burns to personnel. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency heat-insulating coke pot made of reinforced refractory material to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a reinforced refractory material high-efficiency heat-insulating coke oven, comprising a refractory layer, a high-efficiency heat-insulating layer, a structural support layer, and an outer protective layer. The refractory layer is modularly assembled from nano-composite corundum mullite refractory bricks. The high-efficiency heat-insulating layer is disposed on the outside of the refractory layer. The high-efficiency heat-insulating layer comprises a lightweight mullite heat-insulating brick layer and a nanoporous aerogel heat-insulating material layer arranged sequentially from the inside to the outside. The structural support layer is disposed on the outside of the high-efficiency heat-insulating layer, and the outer protective layer is disposed on the outside of the structural support layer.

[0006] In a preferred embodiment, the top of the nanocomposite corundum mullite refractory brick is provided with a groove, and the bottom of the nanocomposite corundum mullite refractory brick is provided with a protrusion that matches the groove.

[0007] In a preferred embodiment, adjacent nanocomposite corundum mullite refractory bricks are bonded and sealed with high-temperature refractory mortar.

[0008] In a preferred embodiment, a high-temperature resistant stainless steel wire mesh is disposed between the lightweight mullite insulating brick layer and the nanoporous aerogel insulating material layer.

[0009] In a preferred embodiment, the structural support layer is made of high-strength low-alloy structural steel plate, and the surface of the high-strength low-alloy structural steel plate is provided with a ceramic coating.

[0010] In a preferred embodiment, the outer protective layer is made of polyvinyl fluoride coated color steel plate, and the outer protective layer is connected to the structural support layer by bolts.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This enhanced refractory material high-efficiency heat-insulating coke can, through the setting of a high-efficiency heat-insulating layer, the lightweight mullite heat-insulating brick layer has good high-temperature resistance and heat insulation effect, which can effectively block the transfer of high temperature from the refractory layer to the outside. The nanoporous aerogel heat-insulating material layer has a large number of nano-scale pores with a porosity of over 90%, and the gas molecules in the pores are confined in the nanoscale space and cannot move freely, thereby greatly reducing gas conduction heat loss and significantly improving the heat insulation effect of the coke can. This reinforced refractory high-efficiency heat-insulating coke can withstand the weight of the coke can itself, the weight of the coke, and the impact load during loading and unloading through the setting of structural support layers. At the same time, it improves its high temperature resistance and corrosion resistance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the splicing structure of the refractory brick of this utility model; Figure 3 This is a schematic diagram of the structure of the high-efficiency heat insulation layer of this utility model; Figure 4 This is a schematic diagram of the structural support layer of this utility model.

[0013] In the diagram: 1. Refractory layer; 11. Nanocomposite corundum mullite refractory brick; 12. Groove; 13. High-temperature refractory mortar; 2. High-efficiency insulation layer; 21. Lightweight mullite insulation brick layer; 22. Nanoporous aerogel insulation material layer; 23. High-temperature resistant stainless steel wire mesh; 3. Structural support layer; 31. High-strength low-alloy structural steel plate; 32. Ceramic coating; 4. Outer protective layer. Detailed Implementation

[0014] The present invention will be further described below with reference to the embodiments.

[0015] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the concept of the present invention are all within the scope of protection claimed by the present invention.

[0016] Please see Figure 1-4This utility model provides an enhanced refractory material high-efficiency heat-insulating coke can, including a refractory layer 1, a high-efficiency heat-insulating layer 2, a structural support layer 3, and an outer protective layer 4. The high-efficiency heat-insulating layer 2 is disposed on the outside of the refractory layer 1, the structural support layer 3 is disposed on the outside of the high-efficiency heat-insulating layer 2, and the outer protective layer 4 is disposed on the outside of the structural support layer 3.

[0017] Specifically, the refractory layer 1 is modularly spliced ​​from nano-composite corundum mullite refractory bricks 11. The nano-composite corundum mullite refractory bricks 11 are mainly composed of corundum and mullite, and are modified by adding nano-sized zirconium oxide particles. The nano-zirconium oxide particles can fill the micropores inside the material, refine the grains, and significantly improve the density, high temperature strength and thermal shock resistance of the material, which is far superior to the high-alumina refractory materials used in traditional coke ovens.

[0018] Furthermore, the top of the nano-composite corundum mullite refractory brick 11 is provided with a groove 12, and the bottom of the nano-composite corundum mullite refractory brick 11 is provided with a protrusion that matches the groove 12. Adjacent nano-composite corundum mullite refractory bricks 11 are bonded and sealed with high-temperature refractory mortar 13. Through modular splicing design, it is not only easy to manufacture and install, but also allows for the replacement of only the damaged module when the local refractory material is damaged, thereby reducing maintenance costs and downtime.

[0019] Specifically, the high-efficiency insulation layer 2 includes a lightweight mullite insulation brick layer 21 and a nanoporous aerogel insulation material layer 22 arranged sequentially from the inside to the outside. The lightweight mullite insulation brick layer 21 has good high-temperature resistance and insulation effect, which can effectively block the transmission of high temperature from the refractory layer 1 to the outside. The nanoporous aerogel insulation material layer 22 has a large number of nanoscale pores with a porosity of over 90%. The gas molecules in the pores are confined in the nanoscale space and cannot move freely, thereby greatly reducing gas conduction heat dissipation and significantly improving the insulation effect of the coke can.

[0020] Furthermore, a high-temperature resistant stainless steel wire mesh 23 is provided between the lightweight mullite insulating brick layer 21 and the nanoporous aerogel insulating material layer 22. The high-temperature resistant stainless steel wire mesh 23 is used to fix the aerogel material and prevent it from being damaged or displaced due to vibration and impact during the use of the coke tank, thus ensuring the integrity and stability of the insulating layer.

[0021] Specifically, the structural support layer 3 is made of high-strength low-alloy structural steel plate 31. The high-strength low-alloy structural steel plate 31 has high strength, high toughness and good welding performance, and can withstand the weight of the coke tank itself, the weight of the coke and the impact load during loading and unloading. At the same time, it improves its high temperature resistance and corrosion resistance.

[0022] Furthermore, the surface of the high-strength low-alloy structural steel plate 31 is provided with a ceramic coating 32. The ceramic coating is prepared by plasma spraying technology and its main component is alumina ceramic. With the ceramic coating 32, it can withstand temperatures above 600°C, thus preventing the structural support layer 3 from experiencing a decrease in strength due to prolonged exposure to high temperatures.

[0023] Specifically, the outer protective layer 4 is made of polyvinyl fluoride coated color steel plate. The outer protective layer 4 is connected to the structural support layer 3 by bolts. The outer protective layer 4 can protect the structural support layer 3 from external environmental erosion and damage (such as rain, dust, mechanical impact, etc.). By selecting polyvinyl fluoride coated color steel plate, the color steel plate has excellent weather resistance, corrosion resistance and impact resistance. Its coating has a service life of more than 20 years in outdoor environment, and the surface is smooth and easy to clean.

[0024] The working principle and usage process of this utility model are as follows: First, by using a modular splicing of nano-composite corundum mullite refractory bricks 11 to form the refractory layer 1, the density, high-temperature strength, and thermal shock resistance of the coke tank refractory material are significantly improved. Through the setting of the high-efficiency heat insulation layer 2, the lightweight mullite heat insulation brick layer 21 has good high-temperature resistance and heat insulation effect, which can effectively block the high temperature from being transferred from the refractory layer 1 to the outside. The nanoporous aerogel heat insulation material layer 22 has a large number of nano-scale pores with a porosity of over 90%, and the gas molecules in the pores are confined in the nanoscale space and cannot move freely, thereby greatly reducing gas conduction heat dissipation and significantly improving the heat insulation effect of the coke tank. Through the setting of the structural support layer 3, it can withstand the weight of the coke tank itself, the weight of the coke, and the impact load during loading and unloading. At the same time, it improves its high-temperature resistance and corrosion resistance.

[0025] 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 reinforced refractory high-efficiency heat-insulating coke oven, comprising a refractory layer (1), a high-efficiency heat-insulating layer (2), a structural support layer (3), and an outer protective layer (4), characterized in that: The refractory layer (1) is modularly spliced ​​from nano-composite corundum mullite refractory bricks (11). The high-efficiency heat insulation layer (2) is set on the outside of the refractory layer (1). The high-efficiency heat insulation layer (2) includes a lightweight mullite heat insulation brick layer (21) and a nanoporous aerogel heat insulation material layer (22) arranged sequentially from the inside to the outside. The structural support layer (3) is set on the outside of the high-efficiency heat insulation layer (2). The outer protective layer (4) is set on the outside of the structural support layer (3).

2. The reinforced refractory high-efficiency heat-insulating coke pot according to claim 1, characterized in that: The top of the nanocomposite corundum mullite refractory brick (11) is provided with a groove (12), and the bottom of the nanocomposite corundum mullite refractory brick (11) is provided with a protrusion that matches the groove (12).

3. The reinforced refractory high-efficiency heat-insulating coke pot according to claim 1, characterized in that: The adjacent nanocomposite corundum mullite refractory bricks (11) are bonded and sealed with high-temperature refractory mortar (13).

4. The enhanced refractory high-efficiency heat-insulating coke pot according to claim 1, characterized in that: A high-temperature resistant stainless steel wire mesh (23) is provided between the lightweight mullite insulating brick layer (21) and the nanoporous aerogel insulating material layer (22).

5. The reinforced refractory high-efficiency heat-insulating coke pot according to claim 1, characterized in that: The structural support layer (3) is made of high-strength low-alloy structural steel plate (31), and the surface of the high-strength low-alloy structural steel plate (31) is provided with a ceramic coating (32).

6. The reinforced refractory high-efficiency heat-insulating coke pot according to claim 1, characterized in that: The outer protective layer (4) is made of polyvinyl fluoride coated color steel plate, and the outer protective layer (4) and the structural support layer (3) are connected by bolts.

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