High-temperature tunnel kiln combustion system
By designing a combustion system with multiple transverse cylindrical shell-like burning nozzles and diffusion pipes in a high-temperature tunnel kiln, the problem of uneven heat distribution in the kiln is solved, more uniform heat convection is achieved, and the firing of refractory products is improved Quality and kiln efficiency.
Patent Information
- Application Number
- CN202323434669.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-17
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2033-12-17
AI Technical Summary
The thermal convection effect of the existing high-temperature tunnel kiln combustion system is poor, resulting in overfiring and pyrogenic firing of refractory products in the inner part of the kiln, affecting product quality and energy consumption.
Design a high-temperature tunnel kiln combustion system including multiple transverse cylindrical shell-shaped burning nozzles. The burning nozzle shell is equipped with combustion pipes and diffusion pipes. The combustion gases are burned in the combustion pipes and evenly distributed heat through the diffusion pipes to avoid heat. concentrated.
It improves the heat convection effect in the tunnel kiln, evenly distributes heat, avoids overfired and raw firing of refractory products, and improves product quality and kiln use efficiency.
Smart Images
Figure CN222298472U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of refractory material production, in particular to a high-temperature tunnel kiln combustion system. Background Art
[0002] The high-temperature tunnel kiln is a vital high-temperature kiln equipment in the production of refractory materials. The combustion system is the most important subsystem of the high-temperature tunnel kiln, which determines the external dimensions and physical and chemical indicators of refractory products, and also affects energy consumption.
[0003] Patent No. CN202020168313.9 discloses an energy-saving tunnel kiln, which is equipped with a burner structure. During the operation of the burner, the gas and combustion-supporting air enter the combustion chamber and are ignited. Then, they enter the tunnel kiln under the action of gas pressure to heat the products in the kiln. The heat convection effect is poor, and heat is mainly transferred in the form of thermal radiation, which can easily cause overburning of refractory products in the front, rear and top of the tunnel kiln where the airflow is unobstructed, and raw burning of refractory products in the middle of the tunnel kiln. Therefore, it is necessary to study a new type of tunnel kiln combustion system to solve the above problems. Summary of the invention
[0004] The utility model aims to solve the above problems and provide a high-temperature tunnel kiln combustion system with a simple structure and improved firing effect.
[0005] In order to achieve the above purpose, the technical solution of the utility model is:
[0006] A high-temperature tunnel kiln combustion system comprises a burner, which is arranged on both sides of the inner wall of the tunnel kiln. The burner comprises a burner shell, which is in the shape of a horizontal cylindrical shell. One end of the burner shell is open, and a combustion pipe is arranged at the center of the burner shell. The combustion pipe is coaxially arranged with the burner shell and the combustion pipe is fixedly connected to the burner shell. One end of the combustion pipe extends out of the sealed end of the burner shell and is connected to the combustion-supporting pipe; a plurality of diffusion pipes are arranged on the periphery of the combustion pipe and the plurality of diffusion pipes are arranged at equal intervals along the circumferential direction of the combustion pipe. The diffusion pipe is located in the burner shell, one end of the diffusion pipe extends out of the sealed end of the burner shell, and the other end of the diffusion pipe is inclined toward the axial direction of the combustion pipe.
[0007] Furthermore, one end of the diffusion pipe extending out of the sealed end of the burner shell is bent in a direction away from the axis of the combustion pipe, and the end of the end is connected to the external air inlet pipeline.
[0008] Furthermore, the distance between one end of the diffusion pipe close to the open end of the burner shell and the open end of the burner shell is smaller than the distance between one end of the combustion pipe close to the open end of the burner shell and the open end of the burner shell.
[0009] Furthermore, there are a plurality of burners, which are divided into a plurality of rows and are arranged at equal intervals along the height direction of the tunnel kiln. The arrangement direction of the burners in each row is consistent with the length direction of the tunnel kiln. The burners in each row are staggered with the burners in the adjacent row.
[0010] Furthermore, the burner shell is fixedly connected to the inner wall of the tunnel kiln, the open end of the burner shell faces the inside of the tunnel kiln and the axial direction of the burner shell is perpendicular to the inner wall of the tunnel kiln.
[0011] Furthermore, a kiln car is slidably connected in the tunnel kiln and can move along the length direction of the tunnel kiln. The kiln car is located below a plurality of burners.
[0012] Furthermore, an igniter is provided on the inner wall of the combustion pipe.
[0013] Compared with the prior art, the utility model has the following advantages and positive effects:
[0014] When the utility model is in use, it allows the combustion-supporting gas to enter the combustion pipe through the combustion-supporting pipe and burn, and the heat of combustion is sent out from the port of the combustion pipe under the gas pressure in the combustion pipe, and at the same time, the external air flow enters from the diffusion pipe and blows towards the heat coming out of the combustion pipe, which not only speeds up the rate at which heat enters the tunnel kiln, but also can disperse the heat and make it evenly distributed to other areas in the tunnel kiln, thereby improving the thermal convection effect in the tunnel kiln, avoiding the situation that the refractory products at the front, rear and top positions of the tunnel kiln are overburned due to uneven heat distribution in the tunnel kiln, and the refractory products at the middle position of the tunnel kiln are underburned, thereby effectively improving the firing quality of the refractory products in the tunnel kiln and further improving the use effect of the tunnel kiln. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0016] Figure 1 It is a structural schematic diagram of the burner;
[0017] Figure 2 for Figure 1 AA cross-sectional structure diagram;
[0018] Figure 3 This is a schematic diagram of the structure of the tunnel kiln;
[0019] Figure 4Schematic diagram of the distribution of burners in the tunnel kiln. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work, any modifications, equivalent replacements, improvements, etc., should be included in the protection scope of the utility model.
[0021] like Figures 1 to 4 As shown, this embodiment discloses a high-temperature tunnel kiln combustion system, including a burner 1, which is arranged on both sides of the inner wall of a tunnel kiln 2.
[0022] The burner 1 comprises a burner shell 101, which is in the shape of a horizontal cylindrical shell, with one end of the burner shell 101 being open and the other end being sealed; a combustion pipe 102 is arranged at the center of the burner shell 101, the combustion pipe 102 is arranged coaxially with the burner shell 101 and the combustion pipe 102 is fixedly connected to the burner shell 101, an igniter is arranged on the inner wall of the combustion pipe 102, and one end of the combustion pipe 102 extends out of the sealed end of the burner shell 101 and is connected to the combustion-supporting pipe;
[0023] A plurality of diffusion pipes 103 are arranged on the outer circumference of the combustion pipe 102 and are arranged at equal intervals along the circumferential direction of the combustion pipe 102. The diffusion pipes 103 are located in the burner shell 101, one end of the diffusion pipes 103 extends out of the sealed end of the burner shell 101, and the other end of the diffusion pipes 103 is inclined toward the axial direction of the combustion pipe 102; one end of the diffusion pipe 103 extending out of the sealed end of the burner shell 101 is bent in a direction away from the axial direction of the combustion pipe 102 and the end of the end is connected to an external air inlet pipeline; the distance between the end of the diffusion pipe 103 close to the open end of the burner shell 101 and the open end of the burner shell 101 is smaller than the distance between the end of the combustion pipe 102 close to the open end of the burner shell 101 and the open end of the burner shell 101.
[0024] The design of the diffusion pipe can not only disperse the heat generated in the combustion pipe to make the heat in the tunnel kiln evenly distributed, but also make the combustion heat in the combustion pipe quickly come out of the combustion pipe and quickly enter the tunnel kiln under the action of negative pressure. It can accelerate the rate at which the combustion-supporting gas or natural gas enters the combustion pipe under the action of negative pressure, thereby playing a certain combustion-supporting effect.
[0025] There are a plurality of burners 1, which are divided into a plurality of rows and are arranged at equal intervals along the height direction of the tunnel kiln 2. The arrangement direction of the burners 1 in each row is consistent with the length direction of the tunnel kiln 2; the burners 1 in each row are staggered with the burners 1 in the adjacent row.
[0026] The burner shell 101 is fixedly connected to the inner wall of the tunnel kiln 2 , the open end of the burner shell 101 faces the inside of the tunnel kiln 2 and the axial direction of the burner shell 101 is perpendicular to the inner wall of the tunnel kiln 2 .
[0027] A kiln car 3 is slidably connected in the tunnel kiln 2 and can move along the length direction of the tunnel kiln 2 . The kiln car 3 is located below a plurality of burners 1 .
[0028] The staggered distribution design of adjacent rows of burners allows the combustion heat generated by the burners to be initially evenly distributed in the tunnel kiln. With the further assistance of the diffusion pipe, the combustion heat generated by the burners can be quickly diffused in the tunnel kiln, thereby keeping the heat in the entire tunnel kiln uniform and effectively improving the firing effect of the tunnel kiln.
[0029] When the utility model is in use, it allows the combustion-supporting gas to enter the combustion pipe through the combustion-supporting pipe and burn, and the heat of combustion is sent out from the port of the combustion pipe under the gas pressure in the combustion pipe, and at the same time, the external air flow enters from the diffusion pipe and blows towards the heat coming out of the combustion pipe, which not only speeds up the rate at which heat enters the tunnel kiln, but also can disperse the heat and make it evenly distributed to other areas in the tunnel kiln, thereby improving the thermal convection effect in the tunnel kiln, avoiding the situation that the refractory products at the front, rear and top positions of the tunnel kiln are overburned due to uneven heat distribution in the tunnel kiln, and the refractory products at the middle position of the tunnel kiln are underburned, thereby effectively improving the firing quality of the refractory products in the tunnel kiln and further improving the use effect of the tunnel kiln.
Claims
1. A high-temperature tunnel kiln combustion system, comprising a burner, the burner being arranged on both sides of the inner wall of the tunnel kiln, characterized in that: The burner includes a burner shell, which is in the shape of a horizontally placed cylindrical shell. One end of the burner shell is open, and a combustion pipe is arranged at the center of the burner shell. The combustion pipe is coaxially arranged with the burner shell and the combustion pipe is fixedly connected to the burner shell. One end of the combustion pipe extends out of the sealed end of the burner shell and is connected to the combustion-supporting pipe. A plurality of diffusion pipes are arranged on the periphery of the combustion pipe and the plurality of diffusion pipes are arranged at equal intervals along the circumferential direction of the combustion pipe. The diffusion pipe is located in the burner shell, one end of the diffusion pipe extends out of the sealed end of the burner shell, and the other end of the diffusion pipe is inclined toward the axial direction of the combustion pipe.
2. The high temperature tunnel kiln combustion system according to claim 1, characterized in that: One end of the diffusion pipe extending out of the sealing end of the burner shell is bent in a direction away from the axis of the combustion pipe, and the end of the end is connected with an external air inlet pipeline.
3. The high temperature tunnel kiln combustion system according to claim 2, characterized in that: The distance between one end of the diffusion pipe close to the open end of the burner shell and the open end of the burner shell is smaller than the distance between one end of the combustion pipe close to the open end of the burner shell and the open end of the burner shell.
4. The high temperature tunnel kiln combustion system according to claim 3, characterized in that: There are a plurality of burners, which are divided into a plurality of rows and arranged at equal intervals along the height direction of the tunnel kiln. The arrangement direction of each row of burners is consistent with the length direction of the tunnel kiln. The burners in each row are staggered with the burners in the adjacent row.
5. The high temperature tunnel kiln combustion system according to claim 4, characterized in that: The burner shell is fixedly connected to the inner wall of the tunnel kiln, the opening end of the burner shell faces the inside of the tunnel kiln and the axial direction of the burner shell is perpendicular to the inner wall of the tunnel kiln.
6. The high temperature tunnel kiln combustion system according to claim 5, characterized in that: A kiln car is slidably connected in the tunnel kiln and can move along the length direction of the tunnel kiln. The kiln car is located below a plurality of burners.
7. The high temperature tunnel kiln combustion system according to claim 6, characterized in that: An igniter is arranged on the inner wall of the combustion pipe.