Tunnel kiln with novel heat preservation structure
By setting up a multi-layer composite insulation structure inside the tunnel kiln, including an asbestos layer, a boron nitride fiberboard layer, an aluminum silicate refractory board layer, and a mullite material layer, the problem of poor insulation effect of the tunnel kiln is solved, achieving better insulation and high-temperature resistance performance, and reducing energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENGSHUI DONGYUAN ENVIRONMENTAL PROTECTION EQUIP CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-06-02
Smart Images
Figure CN224316766U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tunnel kiln technology, and in particular to a tunnel kiln with a novel heat preservation structure. Background Technology
[0002] Tunnel kilns are a common type of industrial kiln structure. They are similar to tunnels, containing kiln cars and other transport vehicles, and are modern, continuous firing thermal equipment.
[0003] However, existing technologies have some problems: existing tunnel kilns have poor heat preservation effects, and when people use tunnel kilns, the internal temperature is easily lost too quickly, resulting in high energy consumption, increased operating costs, and inconvenience for people to use. Therefore, it is necessary to provide a tunnel kiln with a new type of heat preservation structure to solve the above technical problems. Utility Model Content
[0004] This utility model provides a tunnel kiln with a novel insulation structure, which solves the technical problems of existing tunnel kilns, such as poor insulation effect, rapid internal temperature loss, high energy consumption, increased operating costs, and inconvenience for users.
[0005] To solve the above-mentioned technical problems, this utility model provides a tunnel kiln with a novel heat preservation structure, comprising:
[0006] The tunnel kiln body includes a charging and conveying platform. An insulation layer is provided inside the tunnel kiln body. A heat-insulating layer is provided inside the insulation layer. A heat-resistant layer is provided inside the heat-insulating layer. The insulation layer includes an asbestos layer. A boron-nitrogen fiberboard layer is provided inside the asbestos layer. The heat-insulating layer includes an aluminosilicate refractory board layer. A mullite material layer is provided inside the aluminosilicate refractory board layer. The heat-resistant layer includes a basalt fiberboard layer. A refractory clay layer is provided inside the basalt fiberboard layer.
[0007] Preferably, the thickness of the asbestos layer is the same as the thickness of the nitrogen-boron fiberboard layer.
[0008] Preferably, the thickness of the mullite material layer is less than the thickness of the aluminosilicate refractory board layer.
[0009] Preferably, the thickness of the heat insulation layer is greater than the thickness of the heat preservation layer and the thickness of the heat-resistant layer.
[0010] Compared with related technologies, the tunnel kiln with a novel insulation structure provided by this utility model has the following beneficial effects:
[0011] This utility model provides a tunnel kiln with a novel heat insulation structure. By setting up a heat insulation layer, the tunnel kiln body effectively prevents heat loss during use, thus solving the problem of excessive heat loss during the operation of the tunnel kiln body.
[0012] This utility model provides a tunnel kiln with a novel insulation structure. The insulation layer effectively improves the insulation performance of the tunnel kiln body during use, thus solving the problem of poor insulation performance of the tunnel kiln body during operation.
[0013] This utility model provides a tunnel kiln with a novel heat-insulating structure. By utilizing the heat-resistant layer, the main body of the tunnel kiln achieves good high-temperature resistance during use, thus solving the problem of poor high-temperature resistance of the main body of the tunnel kiln during use. Attached Figure Description
[0014] Figure 1 A schematic diagram of a preferred embodiment of a tunnel kiln with a novel heat preservation structure provided by this utility model;
[0015] Figure 2 This is a partial cross-sectional view of the insulation layer structure of this utility model;
[0016] Figure 3 This is a partial cross-sectional view of the insulation layer structure of this utility model;
[0017] Figure 4 This is a partial cross-sectional view of the heat-resistant layer structure of this utility model.
[0018] The diagram is labeled as follows: 1. Main body of the tunnel kiln; 2. Insulation layer; 21. Asbestos layer; 22. Nitrogen boron fiberboard layer; 3. Thermal insulation layer; 31. Aluminosilicate refractory board layer; 32. Mullite material layer; 4. Heat-resistant layer; 41. Basalt fiberboard layer; 42. Refractory clay layer. Detailed Implementation
[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Example
[0020] Please see Figure 1-4This utility model provides a technical solution: a tunnel kiln with a novel heat-insulating structure, comprising: a tunnel kiln body 1, the tunnel kiln body 1 including a loading and conveying platform, a heat insulation layer 2 disposed inside the tunnel kiln body 1, a heat insulation layer 3 disposed inside the heat insulation layer 2, a heat-resistant layer 4 disposed inside the heat insulation layer 3, the thickness of the heat insulation layer 2 being greater than the thickness of the heat insulation layer 3 and the thickness of the heat-resistant layer 4, the heat insulation layer 2 including an asbestos layer 21, a nitrogen-boron fiberboard layer 22 disposed inside the asbestos layer 21, the heat insulation layer 3 including an aluminosilicate refractory board layer 31, a mullite material layer 32 disposed inside the aluminosilicate refractory board layer 31, and the heat-resistant layer 4 including a basalt fiberboard layer 41, a refractory clay layer 42 disposed inside the basalt fiberboard layer 41.
[0021] In this embodiment, the boron nitride fiberboard layer 22 is provided, wherein the boron nitride fiberboard is a polycrystalline fiber with boron nitride as the main component, typically with a diameter of 4 to 6 micrometers, a density of 1.8 to 1.9 g / cm3, a strength of about 2 gigapascals, an elastic modulus of 340 to 350 gigapascals, a melting point of 300°C, excellent heat insulation and high temperature resistance, resistance to nuclear radiation, and protection against chemical corrosion and infrared radiation. The aluminosilicate refractory board layer 31 is provided, wherein the aluminosilicate refractory board has the advantages of light weight, high temperature resistance, thermal stability, low thermal conductivity, small heat capacity, good mechanical vibration resistance, good heating and heat preservation performance, and good expansion properties. Example
[0022] Please see Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: the thickness of the asbestos layer 21 is the same as the thickness of the nitrogen boron fiberboard layer 22, and the thickness of the mullite material layer 32 is less than the thickness of the aluminum silicate refractory board layer 31.
[0023] In this embodiment: the mullite material layer 32 is provided, in which mullite material has the characteristics of high temperature resistance, high strength, low thermal conductivity, and significant energy-saving effect. It is suitable for the lining of petroleum cracking furnace, metallurgical hot blast stove, ceramic roller kiln, tunnel kiln, electric porcelain drawer kiln, glass crucible kiln and various electric furnaces. It can be in direct contact with flame. The refractory clay layer 42 is provided, in which refractory clay refers to clay with a refractoriness greater than 1580℃ that can be used as refractory material and bauxite used as refractory material. In addition to having high refractoriness, they can maintain volume stability under high temperature conditions and have slag resistance, resistance to rapid cooling and heating, and a certain mechanical strength. Therefore, they are exceptionally firm after calcination. Refractory clay is mainly used in the metallurgical industry.
[0024] The working principle of the tunnel kiln with a novel heat preservation structure provided by this utility model is as follows:
[0025] Implementation steps for the first innovation point:
[0026] Step 1: By setting up boron nitride fiberboard layer 22, wherein the boron nitride fiberboard is a polycrystalline fiber with boron nitride as the main component, typically with a diameter of 4 to 6 micrometers, a density of 1.8 to 1.9 g / cm3, a strength of about 2 gigapascals, an elastic modulus of 340 to 350 gigapascals, a melting point of 300℃, excellent heat insulation and high temperature resistance, resistance to nuclear radiation, and protection against chemical corrosion and infrared radiation;
[0027] Step 2: By setting the aluminum silicate refractory board layer 31, the aluminum silicate refractory board has the advantages of light weight, high temperature resistance, thermal stability, low thermal conductivity, small heat capacity, good mechanical vibration resistance, good heating and heat preservation performance, and good expansion.
[0028] Implementation steps for the second innovation point:
[0029] Step 1: By setting the mullite material layer 32, the mullite material has the characteristics of high temperature resistance, high strength, low thermal conductivity, and significant energy saving effect. It is suitable for the lining of petroleum cracking furnace, metallurgical hot blast furnace, ceramic roller kiln, tunnel kiln, electric porcelain drawer kiln, glass crucible kiln and various electric furnaces, and can be in direct contact with flame.
[0030] Step 2: By setting the refractory clay layer 42, the refractory clay refers to clay with a refractoriness greater than 1580℃ that can be used as refractory material and bauxite used as refractory material. In addition to having high refractoriness, they can maintain volume stability under high temperature conditions, and have slag resistance, resistance to rapid cooling and heating, and a certain mechanical strength. Therefore, they are exceptionally firm after calcination. Refractory clay is mainly used in the metallurgical industry.
[0031] 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 tunnel kiln with a novel heat-insulating structure, characterized in that: include: The tunnel kiln body (1) includes a material conveying platform. The tunnel kiln body (1) is provided with a heat insulation layer (2) inside. The heat insulation layer (2) is provided with a heat insulation layer (3) inside. The heat insulation layer (3) is provided with a heat-resistant layer (4) inside. The heat insulation layer (2) includes an asbestos layer (21). The asbestos layer (21) is provided with a nitrogen-boron fiberboard layer (22) inside. The heat insulation layer (3) includes an aluminosilicate refractory board layer (31). The aluminosilicate refractory board layer (31) is provided with a mullite material layer (32) inside. The heat-resistant layer (4) includes a basalt fiberboard layer (41). The basalt fiberboard layer (41) is provided with a refractory clay layer (42) inside.
2. The tunnel kiln with a novel heat-insulating structure according to claim 1, characterized in that, The thickness of the asbestos layer (21) is the same as the thickness of the nitrogen-boron fiberboard layer (22).
3. A tunnel kiln with a novel heat-insulating structure according to claim 1, characterized in that, The thickness of the mullite material layer (32) is less than the thickness of the aluminosilicate refractory board layer (31).
4. A tunnel kiln with a novel heat-insulating structure according to claim 1, characterized in that, The thickness of the heat insulation layer (2) is greater than the thickness of the heat insulation layer (3) and the thickness of the heat-resistant layer (4).