Ozone denitration device

Abstract

The utility model discloses an ozone denitration device which comprises a combustion furnace, a smoke exhaust channel, an absorption tower and an ozone generator, the combustion furnace, the smoke exhaust channel and the absorption tower are sequentially communicated through pipelines, the output end of the ozone generator is communicated with an exhaust pipeline, the exhaust pipeline is connected with a main exhaust pipe, and the main exhaust pipe is connected with a plurality of branch exhaust pipes. The multiple branch exhaust pipes are inserted into the smoke exhaust channel, exhaust holes are evenly formed in the surfaces of the parts, inserted into the smoke exhaust channel, of the branch exhaust pipes, and the branch exhaust pipes are distributed in the smoke exhaust channel in a snake disc shape. According to the utility model, the plurality of branch exhaust pipes which are uniformly distributed in the smoke exhaust channel in the snake disc shape are arranged in the smoke exhaust channel, so that the mixing contact area of ozone and smoke is greatly increased, the mixing effect of the ozone and the smoke is improved, and the ozone denitration efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ozone denitration, in particular to an ozone denitration device. Background Art

[0002] With the continuous increase of NOX emissions, the environmental pollution caused by NOX has attracted more and more attention. Due to the fuel characteristics, flue gas composition and fly ash properties of garbage incinerators and biomass fuel boilers, conventional SCR and SNCR methods cannot be used for flue gas denitrification.

[0003] At present, the two mainstream solutions are low-temperature SCR and ozone oxidation denitrification technology. In terms of technical and economic performance, ozone oxidation denitrification has great advantages. Ozone oxidation denitrification mainly uses the strong oxidizing property of ozone to convert insoluble NO, which accounts for more than 95% of flue gas NOX, into soluble high-valent nitrogen oxides. Then, in the scrubber, the high-valent nitrogen oxides are absorbed by water or alkali to generate nitric acid or its salts, thereby achieving the purpose of removing NOX.

[0004] Therefore, the mixing effect and speed of ozone and flue gas have a very important influence on the denitrification efficiency. How to quickly mix flue gas is an important research direction of ozone denitrification device. Utility Model Content

[0005] In order to solve the above technical problems, the utility model designs an ozone denitrification device.

[0006] The utility model adopts the following technical solutions:

[0007] An ozone denitrification device comprises a combustion furnace, a smoke exhaust channel, an absorption tower and an ozone generator. The combustion furnace, the smoke exhaust channel and the absorption tower are connected in sequence through pipelines. The output end of the ozone generator is connected to the exhaust duct. The exhaust duct is connected to a main exhaust pipe. The main exhaust pipe is connected to a plurality of branch exhaust pipes. The plurality of branch exhaust pipes are respectively inserted into the smoke exhaust channel. Exhaust holes are evenly opened on the surface of the branch exhaust pipe inserted into the smoke exhaust channel, and are distributed in the smoke exhaust channel in a serpentine shape.

[0008] Preferably, a flow regulating valve is installed on the exhaust pipe.

[0009] Preferably, the center of the snake-shaped portion of the branch exhaust pipe inserted into the smoke exhaust channel is located at the axial core of the smoke exhaust channel.

[0010] Preferably, the spacing between the exhaust holes is 1-5 times the diameter of the exhaust holes.

[0011] Preferably, a blower is provided between the combustion furnace and the smoke exhaust passage.

[0012] Preferably, the branch exhaust pipes are evenly arranged and distributed along the straight direction of the main exhaust pipe.

[0013] Preferably, a purified air outlet is provided at the top of the absorption tower.

[0014] The beneficial effect of the utility model is that the utility model arranges multiple branch exhaust pipes distributed in a snake-like shape in the smoke exhaust channel, and evenly arranges them in the smoke exhaust channel, thereby greatly increasing the mixing contact area of ​​ozone and flue gas, improving the mixing effect of ozone and flue gas, and greatly improving the efficiency of ozone denitrification. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the smoke exhaust channel in the utility model;

[0017] Figure 3 yes Figure 2 A cross-sectional view in the AA direction;

[0018] In the figure: 1. combustion furnace, 2. smoke exhaust channel, 3. absorption tower, 4. ozone generator, 5. exhaust duct, 6. main exhaust pipe, 7. branch exhaust pipe, 8. flow regulating valve, 9. exhaust hole. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0020] Example: Figure 1-Figure 3 As shown, an ozone denitrification device includes a combustion furnace 1, a smoke exhaust channel 2, an absorption tower 3 and an ozone generator 4. The combustion furnace, the smoke exhaust channel and the absorption tower are connected in sequence through pipelines. The output end of the ozone generator is connected to an exhaust pipe 5. The exhaust pipe is connected to a main exhaust pipe 6. The main exhaust pipe is connected to a plurality of branch exhaust pipes 7. The plurality of branch exhaust pipes are respectively inserted into the smoke exhaust channel. Exhaust holes 9 are evenly opened on the surface of the branch exhaust pipe inserted into the smoke exhaust channel, and are distributed in the smoke exhaust channel in a serpentine shape.

[0021] A flow regulating valve 8 is installed on the exhaust pipe. The center of the snake-shaped part of the branch exhaust pipe inserted into the exhaust channel is located at the axial core of the exhaust channel. The spacing size of the exhaust holes is 1-5 times the diameter size of the exhaust holes.

[0022] A blower is installed between the combustion furnace and the smoke exhaust channel. The branch exhaust pipes are evenly arranged and distributed along the straight line of the main exhaust pipe. A purified air outlet is installed at the top of the absorption tower.

[0023] When the utility model is used, the smoke containing harmful substances such as nitrate generated by the combustion in the combustion furnace is blown into the smoke exhaust channel through the hair dryer, and at the same time, the ozone emitter generates ozone and is discharged through the exhaust holes of a plurality of branch exhaust pipes distributed in a snake-like shape in the smoke exhaust channel, so as to fully contact the smoke entering the smoke exhaust channel and fully react to denitrate. The smoke after the reaction through the smoke exhaust channel enters the absorption tower for sedimentation and absorption, so that the finally purified smoke is discharged from the purified air outlet at the top of the absorption tower.

[0024] The utility model arranges multiple branch exhaust pipes in a snake-like shape in the smoke exhaust channel, and evenly arranges them in the smoke exhaust channel, which greatly increases the mixing contact area of ​​ozone and flue gas, improves the mixing effect of ozone and flue gas, and greatly improves the efficiency of ozone denitrification.

[0025] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. An ozone denitrification device, characterized in that: It includes a combustion furnace, a smoke exhaust channel, an absorption tower and an ozone generator. The combustion furnace, the smoke exhaust channel and the absorption tower are connected in sequence through pipelines. The output end of the ozone generator is connected to the exhaust pipe. The exhaust pipe is connected to a main exhaust pipe. The main exhaust pipe is connected to a plurality of branch exhaust pipes. The plurality of branch exhaust pipes are respectively inserted into the smoke exhaust channel. Exhaust holes are evenly opened on the surface of the branch exhaust pipe inserted into the smoke exhaust channel, and are distributed in the smoke exhaust channel in a snake-like shape.

2. An ozone denitration device according to claim 1, characterized in that: A flow regulating valve is installed on the exhaust pipe.

3. An ozone denitration device according to claim 1, characterized in that: The center of the snake-shaped portion of the branch exhaust pipe inserted into the smoke exhaust channel is located at the axial core position of the smoke exhaust channel.

4. An ozone denitrification device according to claim 1, characterized in that: The spacing between the exhaust holes is 1-5 times the diameter of the exhaust holes.

5. An ozone denitration device according to claim 1, characterized in that: A blower is arranged between the combustion furnace and the smoke exhaust passage.

6. An ozone denitration device according to claim 1, characterized in that: The branch exhaust pipes are evenly arranged and distributed along the straight direction of the main exhaust pipe.

7. An ozone denitration device according to claim 1, characterized in that: A purified air outlet is arranged at the top of the absorption tower.

Images