Tunnel kiln steel rolling dust removal device

Abstract

The utility model provides a tunnel kiln steel rolling dust removal device which comprises a kiln body, an air draft main pipe is arranged at the top of the kiln body, the end, outside the kiln body, of the air draft main pipe is connected with a desulfuration dust removal assembly, the end, inside the kiln body, of the air draft main pipe is connected with two air draft branch pipes, and the two air draft branch pipes are located on the two sides of the air draft main pipe respectively. An air inlet pipe is arranged in the air draft main pipe, one end of the air inlet pipe is connected with the bottom of the air draft main pipe, and the other end of the air inlet pipe penetrates out of the pipe wall of the portion, outside the kiln body, of the air draft main pipe. According to the tunnel kiln steel rolling dust removal device, the air inlet and the air suction opening are formed in the upper portion and the lower portion of the kiln body respectively, upper gas and lower gas in the kiln body form convection, smoke exhaust of the upper portion and the lower portion in the kiln body is achieved, the air inlet pipe is arranged in the air suction main pipe, and introduced environment air is heated by smoke in the air inlet pipe in the air suction main pipe. And the problem of poor roasting effect caused by temperature reduction in the kiln body due to ventilation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel kilns, in particular to a tunnel kiln steel rolling dust removal device. Background Art

[0002] The emission of exhaust gas from tunnel kilns has always troubled many metallurgical industries, including steel rolling, because the thick smoke emitted by tunnel kilns contains a variety of harmful substances, such as carbon monoxide, carbon black, tar, etc., as well as a lot of sulfur, nitrogen and other substances, which will generate polluting gases such as SO2 and NO2, which will seriously affect human health and pollute the environment.

[0003] In the existing design, the existing smoke exhaust system uses an exhaust fan to extract the smoke and dust gas in the kiln body, and then achieves the purpose of smoke exhaust and dust removal through activated carbon adsorption. Since the exhaust port of the smoke exhaust system is set at a relatively single position, such as being set on the upper or lower side of the side wall of the kiln body, the smoke exhaust system can only exhaust smoke from the upper or lower part of the kiln body. If the exhaust ports are set on both the upper and lower sides of the side wall of the kiln body, the temperature in the kiln body will be too low, which will affect the roasting effect.

[0004] This case was created to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The utility model aims to provide a tunnel kiln steel rolling dust removal device to solve the problems raised in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above purpose, the utility model is implemented through the following technical solutions: a tunnel kiln steel rolling dust removal device, including a kiln body, an exhaust main pipe is provided on the top of the kiln body, and the exhaust main pipe is connected to the desulfurization and dust removal component at one end outside the kiln body, and two exhaust branch pipes are connected to the exhaust main pipe at one end inside the kiln body, and the two exhaust branch pipes are respectively located on both sides of the exhaust main pipe, and the exhaust branch pipes extend to the left and right sides along the inner wall of the top of the kiln body and then continue to extend downward along the inner walls of both sides of the kiln body to the bottom of the kiln body, an exhaust port is provided at one end of the exhaust branch pipe close to the bottom of the kiln body, and the exhaust port faces the inside of the kiln body, an air inlet pipe is provided in the exhaust main pipe, one end of the air inlet pipe is connected to the bottom of the exhaust main pipe, and the other end passes through the pipe wall of the exhaust main pipe outside the kiln body, an air inlet is provided at the bottom of the air inlet pipe, and the air inlet pipe is communicated with the inside of the kiln body.

[0009] Preferably, the air inlet pipe is made of a heat-conducting material, and the air inlet pipe is not connected to the main air exhaust pipe.

[0010] Preferably, one end of the air inlet pipe outside the kiln body is connected to a fan assembly.

[0011] Preferably, the desulfurization and dust removal assembly is connected to a fan assembly.

[0012] (III) Beneficial effects

[0013] After adopting the above technical scheme, the utility model has the following advantages compared with the prior art: the utility model is a tunnel kiln steel rolling dust removal device, by arranging air inlets and exhaust ports one above and one below in the kiln body, the upper and lower gases in the kiln body form convection, thereby realizing smoke exhaust from the upper and lower parts of the kiln body, and the air inlet duct is arranged in the exhaust main pipe, and the ambient air introduced in the air inlet duct is heated by the flue gas in the exhaust main pipe, thereby avoiding the problem of poor roasting effect caused by the decrease of temperature in the kiln body due to ventilation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the utility model;

[0015] Figure 2 This is a schematic cross-sectional diagram of practicality;

[0016] In the figure: 1 kiln body, 2 exhaust main pipe, 3 desulfurization and dust removal component, 4 exhaust branch pipe, 41 exhaust port, 5 air inlet pipe, 51 air inlet, 6 fan component. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below through the drawings and embodiments.

[0018] The utility model provides a tunnel kiln steel rolling dust removal device, such as Figure 1-2 As shown, it includes a kiln body 1, a main exhaust pipe 2 is provided on the top of the kiln body 1, one end of the main exhaust pipe 2 outside the kiln body 1 is connected to a desulfurization and dust removal component 3, the desulfurization and dust removal component 3 is connected to a fan component 6, one end of the main exhaust pipe 2 inside the kiln body 1 is connected to two exhaust branch pipes 4, the two exhaust branch pipes 4 are respectively located on both sides of the main exhaust pipe 2, the exhaust branch pipes 4 extend to the left and right sides along the inner wall of the top of the kiln body 1, and then continue to extend downward along the inner walls of both sides of the kiln body 1 to the bottom of the kiln body 1, an exhaust port 41 is opened at one end of the exhaust branch pipe 4 close to the bottom of the kiln body 1, the exhaust port 41 faces the inside of the kiln body 1, and the smoke in the kiln body 1 is sucked from the bottom of the kiln body 1.

[0019] Reference Figure 2An air inlet pipe 5 is arranged in the exhaust main pipe 2, one end of the air inlet pipe 5 is connected to the bottom of the exhaust main pipe 2, and the other end passes through the pipe wall of the exhaust main pipe 2 outside the kiln body 1. An air inlet port 51 is arranged at the bottom of the air inlet pipe 5, and the air inlet pipe 5 is communicated with the inside of the kiln body 1. The air inlet port 51 and the air exhaust port 41 are arranged one above and one below in the kiln body 1, and convection is formed in the upper and lower gases in the kiln body 1. It should be noted that the drawings and descriptions are only for a part of the tunnel kiln. The tunnel kiln has a certain length, and multiple groups of the utility model should be arranged to achieve the best dust removal effect.

[0020] By arranging an air inlet 51 and an exhaust port 41 at the upper and lower parts of the kiln body 1, convection is formed between the upper and lower gases in the kiln body 1, so that smoke can be exhausted from the upper and lower parts of the kiln body 1. The air inlet pipe 5 is arranged in the exhaust pipe 2, and the ambient air introduced into the air inlet pipe 5 is heated by the smoke in the exhaust pipe, thereby avoiding the problem of poor roasting effect caused by a decrease in the temperature in the kiln body 1 due to ventilation.

[0021] The air inlet pipe 5 is made of a heat-conducting material to further improve the heat transfer efficiency so that the intake air in the air inlet pipe 5 can be heated more. The air inlet pipe 5 is not connected to the main exhaust pipe 2.

[0022] Reference Figure 1 One end of the air inlet pipe 5 outside the kiln body 1 is connected to a fan assembly 6, which is used to deliver ambient air into the kiln body 1. The specific structure and principle of the fan assembly 6 are prior art, so they are not described in detail.

[0023] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel kiln steel rolling dust removal device, characterized in that: The invention comprises a kiln body (1), wherein an exhaust pipe (2) is arranged on the top of the kiln body (1), wherein one end of the exhaust pipe (2) outside the kiln body (1) is connected to a desulfurization and dust removal component (3), and one end of the exhaust pipe (2) inside the kiln body (1) is connected to two exhaust branch pipes (4), wherein the two exhaust branch pipes (4) are respectively located on both sides of the exhaust pipe (2), and the exhaust branch pipes (4) extend to the left and right sides along the inner wall of the top of the kiln body (1) and then continue to extend downward along the inner walls on both sides of the kiln body (1) to the kiln body (1). The bottom of the kiln body (1) is provided with an air outlet (41) at one end of the air exhaust branch pipe (4) close to the bottom of the kiln body (1), and the air outlet (41) faces the inside of the kiln body (1). An air inlet pipe (5) is provided in the air exhaust main pipe (2), and one end of the air inlet pipe (5) is connected to the bottom of the air exhaust main pipe (2), and the other end of the air inlet pipe (5) passes through the wall of the air exhaust main pipe (2) outside the kiln body (1). An air inlet port (51) is provided at the bottom of the air inlet pipe (5), and the air inlet pipe (5) is communicated with the inside of the kiln body (1).

2. A tunnel kiln steel rolling dust removal device according to claim 1, characterized in that: The air inlet pipe (5) is made of a heat-conducting material, and the air inlet pipe (5) is not connected to the main air exhaust pipe (2).

3. The tunnel kiln steel rolling dust removal device according to claim 1, characterized in that: One end of the air inlet pipe (5) located outside the kiln body (1) is connected to a fan assembly (6).

4. The tunnel kiln steel rolling dust removal device according to claim 1, characterized in that: The desulfurization and dust removal component (3) is connected to a fan component (6).

Images