Quenching and spraying cooling device for high-temperature flue gas

Abstract

The utility model discloses a high-temperature flue gas quenching spray cooling device which comprises a high-temperature gas pipeline, the high-temperature gas pipeline comprises an upper transverse section, a lower transverse section and a vertical section used for communicating the rear end of the upper transverse section with the front end of the lower transverse section, a plurality of sprayers are arranged on the upper transverse section, and the sprayers are arranged on the lower transverse section. The sprayers are spirally arranged along the upper transverse section in a 120-degree angle mode, the lower transverse section is provided with a backflow recycling mechanism communicated with the lower transverse section, and compared with the prior art, the cooling effect can be good, backflow of liquid is reduced, and the draught fan is prevented from being burnt down.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas cooling, in particular to a high-temperature flue gas rapid cooling spray cooling device.

Background Art

[0002] Existing flue gas cooling solutions: The conical mist nozzle is installed at the center of the vertical section of the high-temperature gas pipeline and is arranged vertically in a single direction. It has the following defects: 1. The conical mist nozzle is arranged vertically in a single direction, and the effect of rapidly reducing the temperature of the flue gas is not ideal; 2. Installed in the vertical section of the high-temperature gas pipeline, the liquid sprayed by the conical mist nozzle cannot be completely evaporated by the high-temperature gas, and most of the liquid accumulates in the high-temperature gas pipeline, forming a water flow that flows back along the high-temperature gas pipeline; 3. The flowing-back water flow reaches the fan, causing the fan to burn out.

Content of the Utility Model

[0003] The purpose of the utility model is to solve the problems in the existing technology, and propose a high-temperature flue gas rapid cooling spray cooling device, which can have a good cooling effect, reduce the backflow of liquid, and avoid the fan from burning out.

[0004] To achieve the above purpose, the utility model proposes a high-temperature flue gas rapid cooling spray cooling device, including a high-temperature gas pipeline, the high-temperature gas pipeline includes an upper horizontal section, a lower horizontal section and a vertical section for connecting the rear end of the upper horizontal section with the front end of the lower horizontal section. A plurality of spray nozzles are provided on the upper horizontal section, and the spray nozzles are arranged in a spiral shape at an angle of 120° to each other along the upper horizontal section. The lower horizontal section is provided with a backflow recovery mechanism communicated with it.

[0005] Preferably, the upper horizontal section is inclined with the front end lower and the rear end higher.

[0006] Preferably, the lower horizontal section is inclined with the front end lower and the rear end higher.

[0007] Preferably, the backflow recovery mechanism includes a water seal box. The water seal box is communicated with the front end of the lower horizontal section through a water outlet pipe. The output end of the water outlet pipe extends into the water seal box. An overflow port is provided at the rear end of the water seal box, and the height of the overflow port is higher than the height of the output end of the water outlet pipe. A water replenishment port is provided at the upper end of the water seal box.

[0008] Preferably, the front end of the upper horizontal section is communicated with the chimney of the tower equipment through an expansion joint.

[0009] Preferably, the spray nozzles are all communicated with the main water pipe through a shunt pipe. A check valve and a manual butterfly valve are sequentially provided on the shunt pipe, and a self-operated regulating valve is provided on the main water pipe.

[0010] Advantages of the present utility model: By arranging the sprayers in a spiral shape with an angle of 120° to each other along the upper horizontal section, a three-dimensional space spray is formed, which can rapidly reduce the temperature of the flue gas; the sprayers are installed on the upper horizontal section, and most of the formed water flow can directly flow into the tower body; for the small part of the water flow that may form a backflow, a backflow recovery mechanism is set up to collect the water flow, further ensuring the safety of the equipment connected to the high-temperature gas pipeline. Compared with the prior art, it has a good cooling effect, reduces the backflow of the liquid, and avoids the burning of the fan.

[0011] The features and advantages of the present utility model will be described in detail through embodiments in conjunction with the drawings.

Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of a high-temperature flue gas rapid cooling spray cooling device of the present utility model;

[0013] Figure 2 is Figure 1 the sectional view taken along A-A in

[0014] In the figure: 1 - high-temperature gas pipeline, 2 - sprayer, 3 - backflow recovery mechanism, 4 - expansion joint, 5 - tower equipment, 6 - chimney, 7 - shunt pipe, 8 - main water pipe, 9 - check valve, 10 - manual butterfly valve, 11 - upper horizontal section, 12 - lower horizontal section, 13 - vertical section, 31 - water seal box, 32 - water outlet pipe, 33 - overflow port, 34 - water replenishing port, 101 - self-operated regulating valve.

Specific Embodiments

[0015] Refer to Figure 1 、 2 A high-temperature flue gas rapid cooling spray cooling device of the present utility model includes a high-temperature gas pipeline 1, the high-temperature gas pipeline 1 includes an upper horizontal section 11, a lower horizontal section 12 and a vertical section 13 for connecting the rear end of the upper horizontal section 11 with the front end of the lower horizontal section 12, a plurality of sprayers 2 are arranged on the upper horizontal section 11, the sprayers 2 are arranged in a spiral shape with an angle of 120° to each other along the upper horizontal section 11, and a backflow recovery mechanism 3 communicated with it is arranged on the lower horizontal section 12.

[0016] The upper horizontal section 11 is inclined with the front end lower and the rear end higher.

[0017] The lower horizontal section 12 is inclined with the front end lower and the rear end higher.

[0018] The reverse flow recovery mechanism 3 includes a water seal box 31. The water seal box 31 is communicated with the front end of the lower horizontal section 12 through a water outlet pipe 32. The output end of the water outlet pipe 32 extends into the water seal box 31. An overflow port 33 is provided at the rear end of the water seal box 31. The height of the overflow port 33 is higher than the height of the output end of the water outlet pipe 32. A water replenishing port 34 is provided at the upper end of the water seal box 31.

[0019] The front end of the upper horizontal section 11 is communicated with the chimney 6 of the tower equipment 5 through an expansion joint 4.

[0020] The sprayers 2 are all communicated with the main water pipe 8 through shunt pipes 7. A check valve 9 and a manual butterfly valve 10 are sequentially arranged on the shunt pipe 7. A self-operated regulating valve 101 is arranged on the main water pipe 8.

[0021] The working process of the present utility model:

[0022] During the working process of the high-temperature flue gas rapid cooling and spraying cooling device of the present utility model, by arranging the sprayers 2 in a spiral shape at an angle of 120° to each other along the upper horizontal section 11 to form a three-dimensional space spraying, the temperature of the flue gas can be rapidly reduced; the sprayers 2 are installed on the upper horizontal section 11 ， Most of the formed water flow can directly flow into the tower body; for the small part of the water flow that may form a backflow, by setting the reverse flow recovery mechanism 3, the water flow is collected to further ensure the safety of the equipment connected to the high-temperature gas pipeline 11. Compared with the prior art, it has a good cooling effect, reduces the backflow of the liquid, and avoids the burning of the fan.

[0023] The upper horizontal section 11 is inclined with the front end lower and the rear end higher, so as to timely discharge most of the formed water flow and further prevent the obvious backflow of the water flow.

[0024] The above embodiments are illustrative of the present utility model, not limiting the present utility model. Any simple transformation scheme of the present utility model belongs to the protection scope of the present utility model.

Claims

1. A high-temperature flue gas rapid cooling spray cooling device, characterized in that: The invention comprises a high-temperature gas pipeline (1), wherein the high-temperature gas pipeline (1) comprises an upper transverse section (11), a lower transverse section (12), and a vertical section (13) for connecting the rear end of the upper transverse section (11) with the front end of the lower transverse section (12); the upper transverse section (11) is provided with a plurality of sprayers (2), the sprayers (2) are arranged in a spiral shape at an angle of 120° to each other along the upper transverse section (11); and the lower transverse section (12) is provided with a backflow recovery mechanism (3) connected thereto.

2. A high-temperature flue gas rapid cooling spray cooling device as claimed in claim 1, characterized in that: The upper transverse section (11) is arranged to be inclined with the front lower and the rear higher.

3. A high-temperature flue gas rapid cooling spray cooling device as claimed in claim 1, characterized in that: The lower transverse section (12) is inclined so that it is lower at the front and higher at the rear.

4. A high-temperature flue gas rapid cooling spray cooling device as claimed in claim 1, characterized in that: The backflow recovery mechanism (3) comprises a water seal box (31), the water seal box (31) is connected to the front end of the lower transverse section (12) through a water outlet pipe (32), the output end of the water outlet pipe (32) extends into the water seal box (31), the rear end of the water seal box (31) is provided with an overflow port (33), the height of the overflow port (33) is higher than the height of the output end of the water outlet pipe (32), and the upper end of the water seal box (31) is provided with a water replenishment port (34).

5. A high-temperature flue gas rapid cooling spray cooling device as claimed in claim 1, characterized in that: The front end of the upper transverse section (11) is connected to the chimney (6) of the tower equipment (5) through an expansion joint (4).

6. A high-temperature flue gas rapid cooling spray cooling device according to any one of claims 1 to 5, characterized in that: The sprayers (2) are connected to the main water pipe (8) via a shunt pipe (7), a check valve (9) and a manual butterfly valve (10) are provided on the shunt pipe (7) in sequence, and a self-operated regulating valve (101) is provided on the main water pipe (8).

Images