Ozone denitration device for blast furnace gas shaft furnace

Abstract

The utility model relates to the technical field of ozone denitration, solves the technical problem that the ozone denitration process is not thorough, and particularly relates to an ozone denitration device for a blast furnace gas shaft furnace, which comprises a denitration tank serving as a support foundation, a wet-process denitration assembly for wet-process denitration is arranged on one side of the denitration tank, the denitration assembly comprises an ozone making machine body installed on one side of the top end of the denitration tank through a base, the gas outlet end of the ozone making machine body is connected with a communicating pipe, and a supporting seat is fixedly connected to the middle of the inner side of the denitration tank through a support. Due to the arrangement of the denitration assembly, the air pipe frame can be driven to rotate by utilizing wind power generated during air intake of the air intake fan, so that ozone sprayed out through the gas spray head connected with the top end of the air pipe frame is also rotationally sprayed out, the coverage of the ozone is wider, and the ozone can fully react with nitric oxide in flue gas.

Description

Technical Field

[0001] This utility model relates to the technical field of ozone denitrification, and in particular to an ozone denitrification device for blast furnace gas vertical furnace. Background Technology

[0002] Ozone denitrification is an advanced technology that utilizes the strong oxidizing properties of ozone to convert nitrogen oxides in flue gas into higher-valence nitrogen oxides or directly decompose them into nitrogen and oxygen. Its core principle is based on the strong oxidizing power of ozone and the selective reaction of nitrogen oxides. However, the reaction process between gases is not rapid, and the gas flow rate is relatively fast. This means that during ozone denitrification, some flue gas carrying nitrogen oxides may not have time to react before being discharged into the environment, leading to emissions exceeding standards. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an ozone denitrification device for blast furnace gas shaft furnaces, which solves the technical problem of incomplete ozone denitrification and achieves the goal of improving emission safety.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an ozone denitrification device for a blast furnace gas vertical furnace, comprising a denitrification tank as a supporting foundation, a denitrification component for ozone denitrification being provided on the denitrification tank, and a wet denitrification component for wet denitrification being provided on one side of the denitrification tank;

[0005] The denitrification assembly includes an ozone generator body mounted on one side of the top of the denitrification tank via a base. The ozone generator body has a connecting pipe at its outlet. A support base is fixedly connected to the middle of the inner side of the denitrification tank via a bracket. A docking cover is rotatably connected to the inner side of the top of the support base via a bearing. A gas pipe frame is fixedly connected to the top of the docking cover. Several gas nozzles are evenly distributed at the top of the gas pipe frame. Several air-guiding inclined plates are fixedly connected to the bottom of the gas pipe frame via a bracket.

[0006] Preferably, the connecting pipe passes through the denitrification tank and connects to the bottom end of the support base, and the gas outlet end of the connecting pipe is connected to the bottom end of the docking cover.

[0007] Preferably, the tracheal frame is hollow inside, and the middle of the bottom end of the tracheal frame is connected to the top of the docking cover.

[0008] Preferably, the lowest end of the plurality of air-guiding inclined plates does not contact the support frame of the support base, and the plurality of air-guiding inclined plates are distributed clockwise at the bottom end of the air tube frame.

[0009] Preferably, the wet denitrification assembly includes a denitrification tower disposed on one side of the denitrification tank, a circulating water pump mounted on the top of the denitrification tower via a base, an atomizing nozzle connected to the outlet of the circulating water pump inside the denitrification tower, and a chimney pipe connected to one side of the top of the denitrification tower.

[0010] Preferably, an air intake fan is installed at one end of the outer side of the denitrification tank, the air outlet of the air intake fan is connected to the denitrification tank, and a parallel pipe connects the denitrification tank and the denitrification tower.

[0011] By employing the above technical solution, this utility model provides an ozone denitrification device for blast furnace gas vertical shaft furnace, which has at least the following beneficial effects:

[0012] 1. Due to the design of the denitrification component, this utility model can utilize the air force generated by the intake fan to drive the air pipe frame to rotate, thereby causing the ozone sprayed from the gas nozzle connected to the top of the air pipe frame to also rotate and be sprayed out, resulting in a wider coverage of ozone and allowing it to fully react with nitrogen monoxide in the flue gas.

[0013] 2. Due to the wet denitrification component, this utility model can react the generated nitrogen dioxide and dinitrogen pentoxide with water to generate nitrate, which is then absorbed by the alkaline solution to generate nitrogen gas, thus achieving clean emission. Attached Figure Description

[0014] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0015] In the attached diagram:

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the installation structure of the ozone generating machine of this utility model;

[0018] Figure 3 This is a schematic diagram of the air tube support installation structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the docking cover of this utility model;

[0020] Figure 5 This is a schematic diagram of the atomizing nozzle installation structure of this utility model.

[0021] In the diagram: 1. Denitrification tank; 2. Denitrification assembly; 21. Ozone generator; 22. Connecting pipe; 23. Support base; 24. Docking cover; 25. Gas pipe rack; 26. Gas nozzle; 27. Induced air inclined plate;

[0022] 3. Wet denitrification components; 31. Denitrification tower; 32. Circulating water pump; 33. Atomizing nozzle; 34. Chimney pipe; 4. Air intake fan; 5. Parallel pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] The reaction process between gases is not rapid, and the gas flow rate is relatively fast. This means that during ozone denitrification, some of the flue gas carrying nitrates may not have time to react before being released into the environment, leading to emissions exceeding standards. Please refer to... Figures 1-5 This embodiment provides an ozone denitrification device for a blast furnace gas vertical shaft furnace, solving the technical problem of incomplete ozone denitrification. The device includes a denitrification tank 1 as a supporting foundation, a denitrification assembly 2 for ozone denitrification mounted on the tank 1, and a wet denitrification assembly 3 for wet denitrification mounted on one side of the tank 1. Nitrogen monoxide in the flue gas is converted into nitrogen dioxide and dinitrogen pentoxide by the denitrification assembly 2, and the nitrogen dioxide and dinitrogen pentoxide are converted into nitrogen gas by the wet denitrification assembly 3.

[0026] The advantage of existing ozone denitrification is that it does not produce excess impurities and is very convenient. However, because it is a gas mixing reaction, the reaction process becomes incomplete. To solve this problem, a denitrification component 2 is proposed. The denitrification component 2 includes an ozone generating body 21 mounted on one side of the top of the denitrification tank 1 via a base. The outlet end of the ozone generating body 21 is connected to a connecting pipe 22. A support base 23 is fixedly connected to the middle of the inner side of the denitrification tank 1 via a bracket. A docking cover 24 is rotatably connected to the inner side of the top of the support base 23 via a bearing. A gas pipe frame 25 is fixedly connected to the top of the docking cover 24. Several gas nozzles 26 are evenly distributed on the top of the gas pipe frame 25. Several air-guiding inclined plates 27 are fixedly connected to the bottom of the gas pipe frame 25 via a bracket. The lowest point of the several air-guiding inclined plates 27 does not contact the support frame of the support base 23, and the several air-guiding inclined plates 27 are distributed clockwise at the bottom of the gas pipe frame 25. The airflow generated by the flue gas input drives the induced draft baffles 27 to move, and several induced draft baffles 27 will drive the air pipe frame 25 to rotate. At that time, the air pipe frame 25 will rotate inside the support base 23 through the docking cover 24, thereby expanding the range of ozone spray.

[0027] To avoid affecting ozone transmission, the gas pipe frame 25 is rotated. The connecting pipe 22 passes through the denitrification tank 1 and connects to the bottom of the support base 23, and the outlet end of the connecting pipe 22 is connected to the bottom end of the docking cover 24. The gas pipe frame 25 is hollow inside, and the middle of the bottom end of the gas pipe frame 25 is connected to the top end of the docking cover 24.

[0028] Example 2

[0029] Based on Example 1, which solved the technical problem of incomplete ozone denitrification, the problem of incomplete ozone conversion still exists. Figures 1-5 As shown, the specific implementation process is as follows: To convert nitrogen dioxide and dinitrogen pentoxide, which are converted from ozone, into nitrogen gas for emission, the wet denitrification assembly 3 includes a denitrification tower 31 located on one side of the denitrification tank 1. A circulating water pump 32 is installed at the top of the denitrification tower 31 via a base. The outlet of the circulating water pump 32 is connected to an atomizing nozzle 33 inside the denitrification tower 31. The atomizing nozzle 33 enables a wider and more extensive spraying of the alkaline solution. A chimney pipe 34 is connected to one side of the top of the denitrification tower 31. An air intake fan 4 is installed at one end of the outer side of the denitrification tank 1. The outlet of the air intake fan 4 is connected to the denitrification tank 1. A parallel pipe 5 connects the denitrification tank 1 and the denitrification tower 31. The alkaline solution inside the denitrification tower 31 is pumped up by the circulating water pump 32 and sprayed out through the atomizing nozzle 33. Thus, nitrogen dioxide and dinitrogen pentoxide are converted into nitrate by water. The nitrate is absorbed by the alkaline solution and converted into nitrogen gas, which is then emitted through the chimney pipe 34.

[0030] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[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. An ozone denitration device for a blast furnace gas shaft furnace, comprising a denitration tank (1) as a supporting base, characterized in that: The denitrification tank (1) is equipped with a denitrification component (2) for ozone denitrification, and a wet denitrification component (3) for wet denitrification is provided on one side of the denitrification tank (1); The denitrification assembly (2) includes an ozone generator (21) mounted on one side of the top of the denitrification tank (1) via a base. The outlet of the ozone generator (21) is connected to a connecting pipe (22). A support base (23) is fixedly connected to the middle of the inner side of the denitrification tank (1) via a bracket. A docking cover (24) is rotatably connected to the inner side of the top of the support base (23) via a bearing. A gas pipe frame (25) is fixedly connected to the top of the docking cover (24). Several gas nozzles (26) are evenly distributed at the top of the gas pipe frame (25). Several air-guiding inclined plates (27) are fixedly connected to the bottom of the gas pipe frame (25) via a bracket.

2. An ozone denitrification device for a blast furnace gas vertical shaft furnace according to claim 1, characterized in that: The connecting pipe (22) passes through the denitrification tank (1) and connects to the bottom end of the support base (23), and the air outlet end of the connecting pipe (22) is connected to the bottom end of the docking cover (24).

3. The ozone denitration device for a shaft furnace using blast furnace gas according to claim 1, characterized in that: The air tube frame (25) is hollow inside, and the bottom middle of the air tube frame (25) is connected to the top of the docking cover (24).

4. The ozone denitration device for a shaft furnace using blast furnace gas according to claim 1, characterized in that: The lowest end of several of the air-guiding inclined plates (27) does not contact the support frame of the support base (23), and several of the air-guiding inclined plates (27) are distributed clockwise at the bottom end of the air pipe frame (25).

5. The ozone denitration device for a shaft furnace using blast furnace gas according to claim 1, characterized in that: The wet denitrification assembly (3) includes a denitrification tower (31) located on one side of the denitrification tank (1). A circulating water pump (32) is installed on the top of the denitrification tower (31) via a base. The outlet of the circulating water pump (32) is located inside the denitrification tower (31) and connected to an atomizing nozzle (33). A chimney pipe (34) is connected to one side of the top of the denitrification tower (31).

6. The ozone denitration device for a shaft furnace using blast furnace gas according to claim 5, characterized in that: An air intake fan (4) is installed at one end of the outside of the denitrification tank (1). The air outlet of the air intake fan (4) is connected to the denitrification tank (1). A parallel pipe (5) connects the denitrification tank (1) and the denitrification tower (31).

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