A device for preventing flue gas escape from the nozzle of an oxygen-enriched top-blown metallurgical furnace.

Abstract

This utility model discloses a device for preventing the escape of flue gas from the nozzle of an oxygen-enriched top-blown metallurgical furnace. The furnace includes a circular nozzle at its top. The device features an annular air duct adapted to the nozzle, with multiple first air jets connected circumferentially along the lower side of the duct. Multiple inclined second air jets are connected circumferentially along the inner side of the duct, arranged in a spiral pattern. This utility model uses an annular air duct at the nozzle and multiple first and second air jets circumferentially along the lower side of the duct, with the second air jets facing different directions. Flue gas is emitted comprehensively downwards from the nozzle through the first and second air jets, effectively preventing... SO 2. The fumes escape from the nozzle 2, avoiding pollution of the surrounding environment; the structure is simple, the method of use is convenient, and the manufacturing cost is low.

Description

Technical Field

[0001] This utility model belongs to the field of environmental protection equipment technology, and relates to a device for preventing the escape of smoke gas from the nozzle of an oxygen-enriched top-blown metallurgical furnace. Background Technology

[0002] Currently, the main heating methods for various metallurgical furnaces and kilns are electricity, coal, and material self-heating. Oxygen-enriched top-blown metallurgical furnaces and kilns rely on the reaction heat of coal and materials, generating a large amount of heat during the production process. SO 2. Flue gas. Some of the flue gas will escape through the spray gun holes on the top of the furnace when the negative pressure inside the furnace is not good, causing environmental air pollution. Long-term escape will endanger the health of workers. Utility Model Content

[0003] The purpose of this utility model is to address the issues related to metallurgical furnaces and kilns in the background art. SO To address the issue of gas escaping from the nozzle of an oxygen-enriched top-blown metallurgical furnace, a device is provided to prevent the escape of flue gas from the nozzle.

[0004] Therefore, the present invention adopts the following technical solution:

[0005] A device for preventing flue gas escape from the nozzle of an oxygen-enriched top-blown metallurgical furnace includes an oxygen-enriched top-blown metallurgical furnace. The top of the furnace is provided with a circular nozzle. The furnace includes an air duct adapted to the nozzle and arranged in a ring. Multiple first air jet pipes are connected to the lower side of the air duct along its circumference. Multiple inclined second air jet pipes are connected to the inner side of the air duct along its circumference. The second air jet pipes are arranged in a spiral.

[0006] Furthermore, a ring-shaped support plate is fixed at the nozzle of the spray gun, the air duct is installed on the support plate, and the support plate is provided with a plurality of slots along the circumference of the support plate that correspond one-to-one with the first air pipe, and the first air pipe passes through the corresponding slot.

[0007] Furthermore, an air supply pipe is connected to the upper side of the air duct.

[0008] Furthermore, the gas pipeline is equipped with a gas delivery valve.

[0009] Furthermore, the air duct is arranged horizontally.

[0010] Furthermore, the first jet pipe is arranged vertically.

[0011] Furthermore, the second jet pipe forms a 30-60 degree angle with the horizontal plane.

[0012] The beneficial effects of this utility model are as follows: An annular air duct is provided at the nozzle of the spray gun, and multiple first and second air jet pipes are arranged along the circumference of the air duct on its lower side, with the second air jet pipes facing different directions. Air is sprayed comprehensively downwards from the nozzle through the first and second air jet pipes, effectively preventing… SO 2. The fumes escape from the nozzle 2, avoiding pollution of the surrounding environment; the structure is simple, the method of use is convenient, and the manufacturing cost is low. Attached Figure Description

[0013] Figure 1 This is a schematic front view of the structure of this utility model;

[0014] Figure 2 This is a top view illustrating the structure of this utility model;

[0015] Figure 3 for Figure 1 Enlarged view of part A in the middle;

[0016] Figure 4 This is a schematic top view of the heavy-duty support plate structure of this utility model;

[0017] In the diagram, 1-Oxygen-enriched top-blown metallurgical furnace, 2-Spray gun nozzle, 3-Air duct, 4-Support plate, 5-First jet pipe, 6-Card slot, 7-Second jet pipe, 8-Gas supply pipe, 9-Gas supply valve. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings:

[0019] like Figure 1-4As shown, a device for preventing flue gas escape from the nozzle of an oxygen-enriched top-blown metallurgical furnace includes an oxygen-enriched top-blown metallurgical furnace 1. The top of the furnace 1 has a circular nozzle 2. A nozzle can be inserted into the furnace 1 through the nozzle 2, forming a gap between the nozzle and the nozzle 2. A horizontally arranged, annular air duct 3 is provided at the nozzle 2, adapted to the nozzle 2. When the nozzle is inserted into the nozzle 2, it can pass through the annular air duct 3. Specifically, a horizontally arranged, annular support plate 4 is fixed at the nozzle 2. The air duct 2 is installed on the support plate 4. In this embodiment, the air duct 2 can be fixed to the support plate 4 by welding or U-shaped clips. The lower side of the air duct 3 extends along its circumference. A plurality of vertically arranged first jet pipes 5 are connected to the support plate 4. Multiple slots 6, corresponding one-to-one with the first jet pipes 5, are provided along the circumference of the support plate 4. The first jet pipes 5 pass through the corresponding slots 6. Multiple inclined second jet pipes 7 are connected along the circumference of the air duct 3 on its inner side. The second jet pipes 7 form an angle of 30-60 degrees with the horizontal plane. Specifically, in this embodiment, the second jet pipes 7 form a 45-degree angle with the horizontal plane, and all the second jet pipes 7 are arranged spirally. Air can be blown downwards from the nozzle 2 through the first jet pipes 5 and the second jet pipes 7. Because the second jet pipes 7 are spirally arranged, the gas blown downwards from the nozzle 2 can be fully distributed throughout the nozzle 2, thereby effectively preventing… SO 2. Smoke escapes from nozzle 2

[0020] The upper side of the air duct 3 is connected to the air supply pipe 8, which is connected to an air compressor or a factory air source. The air supply pipe 8 is equipped with an air supply valve 9.

[0021] The method of using this utility model is as follows:

[0022] When the oxygen-enriched top-blown metallurgical furnace 1 is in use, the gas supply valve 9 can be opened to supply gas into the air duct 3 through the gas supply pipe 8. Then, the gas in the air duct 3 is ejected downwards from the first jet pipe 5 and the second jet pipe 7. The ejected gas can be sprayed downwards at multiple angles through the multiple second jet pipes 7, thereby filling the nozzle 2 with gas and effectively preventing gas leakage from the oxygen-enriched top-blown metallurgical furnace 1. SO 2. Smoke escapes from nozzle 2, polluting the surrounding environment. This device has a simple structure and low manufacturing cost.

Claims

1. A smoke escaping prevention device for the oxygen-enriched top-blown smelting furnace lance nozzle, comprising an oxygen-enriched top-blown smelting furnace (1), the top of the oxygen-enriched top-blown smelting furnace (1) is provided with a circular structure of a lance nozzle (2), characterized in that, The nozzle (2) is provided with a duct (3) that is adapted to the nozzle (2) and has a circular structure. Multiple first jet pipes (5) are connected to the lower side of the duct (3) along the circumference of the duct (3). Multiple second jet pipes (7) are connected to the inner side of the duct (3) along the circumference of the duct (3) and are arranged in an inclined manner. The second jet pipes (7) are arranged in a spiral.

2. A smoke emission prevention device for the oxygen-rich top-blown metallurgical furnace gun mouth according to claim 1, characterized in that, A ring-shaped support plate (4) is fixed at the nozzle (2) of the spray gun. The air duct (3) is installed on the support plate. The support plate has multiple slots (6) that correspond one-to-one with the first air pipe (5) along the circumference of the support plate (4). The first air pipe (5) passes through the corresponding slot (6).

3. A smoke emission prevention device for the oxygen-rich top-blown metallurgical furnace gun mouth according to claim 1, characterized in that, The upper side of the air duct (3) is connected to the gas supply pipe (8).

4. A smoke emission prevention device for the oxygen-rich top-blown metallurgical furnace gun mouth according to claim 3, characterized in that, The gas pipeline (8) is equipped with a gas valve (9).

5. The device for preventing flue gas escape from the nozzle of an oxygen-enriched top-blown metallurgical furnace as described in claim 1, characterized in that, The air duct (3) is set horizontally.

6. The device for preventing flue gas escape from the nozzle of an oxygen-enriched top-blown metallurgical furnace as described in claim 1, characterized in that, The first jet pipe (5) is set vertically.

7. The device for preventing flue gas escape from the nozzle of an oxygen-enriched top-blown metallurgical furnace as described in claim 1, characterized in that, The second jet pipe (7) forms an angle of 30-60 degrees with the horizontal plane.

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