Spraying device for desulfurizing tower

Abstract

A spraying device for a desulfurizing tower comprises a main spraying pipe, a spraying branch pipe, a spraying opening, a supporting pipe outside the tower and a supporting plate inside the tower, the outer end of the main spraying pipe is an alkaline aqueous solution inlet, the alkaline aqueous solution inlet is located outside the tower, the main spraying pipe is fixed to the supporting pipe outside the tower and the supporting plate inside the tower, and the spraying branch pipe is fixed to the spraying opening. A plurality of spraying branch pipes are arranged on the main spraying pipe in the tower, the diameter of each spraying branch pipe is smaller than that of the main spraying pipe, the spraying openings are downwards formed in the main spraying pipe and the spraying branch pipes in the tower, and the spraying openings are distributed in a concentric circle with the circle center of the section of the desulfurizing tower as the circle center. The utility model provides the spraying device for the desulfurizing tower, which can be used for improving the absorption rate of an alkaline solution to acid gas and improving the utilization rate of the alkaline solution.

Description

Technical Field

[0001] The utility model belongs to the field of desulfurization towers and relates to a spray device for desulfurization towers. Background Art

[0002] With the development of my country's construction, transportation, packaging and home appliance industries, aluminum plates are widely used due to their low price, light weight, durability and good corrosion resistance. Among the many production methods of aluminum plates, the casting and rolling method is currently a widely used method. The casting and rolling method requires the first step of obtaining aluminum liquid, and the aluminum liquid will emit harmful gases during the melting process. If it is not treated, it will cause environmental pollution. Usually, a desulfurization tower is used for tail gas treatment. When the desulfurization tower sprays the alkaline solution, the uneven spraying and inconsistent speed will cause the alkaline solution to absorb the acidic gas incompletely and waste. Summary of the invention

[0003] In order to overcome the disadvantage of poor spray uniformity of the desulfurization tower in the prior art, the utility model provides a spray device for the desulfurization tower which can improve the absorption rate of the alkaline solution to the acid gas and improve the utilization rate of the alkaline solution.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A spray device for a desulfurization tower comprises a main spray pipe, a spray branch pipe, a spray port, an outer support pipe and an inner support plate of the tower. The outer end of the main spray pipe is an inlet for an alkaline aqueous solution, and the inlet for the alkaline aqueous solution is located outside the tower. The main spray pipe is fixed to the outer support pipe and the inner support plate of the tower. A plurality of spray branch pipes are arranged on the main spray pipe located in the tower. The diameter of the spray branch pipe is smaller than that of the main spray pipe. The spray port is arranged downward on the main spray pipe and the spray branch pipe in the tower, and the spray port is distributed in concentric circles with the center of the cross section of the desulfurization tower.

[0006] Furthermore, the spray branch pipe is fixed to the branch pipe outlet of the main spray pipe by bolts.

[0007] Furthermore, two supporting rectangular tubes are arranged in the tower, and the spray branch pipes are fixed on the supporting rectangular tubes.

[0008] Preferably, the spray branch pipe is positioned by a fixing ring and restricted to a relative position of the supporting rectangular pipe.

[0009] The spray branch pipes are all perpendicular to the main spray pipe.

[0010] When the utility model is used as a desulfurization tower spray device, an alkaline solution enters a main spray pipe from an inlet, and is branched from the main spray pipe to each spray branch pipe. The diameter of the spray branch pipe is smaller than that of the main spray pipe to increase the solution pressure. The spray ports in the whole device are distributed in concentric circles, which can ensure that the sprayed solution can evenly cover the entire interface, thereby improving the absorption rate of the alkaline solution to the acid gas and improving the utilization rate of the alkaline solution.

[0011] The beneficial effects of the utility model are mainly manifested in: improving the absorption rate of the alkaline solution to the acidic gas and improving the utilization rate of the alkaline solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a spray device for a desulfurization tower.

[0013] Markings in the attached drawing: 1-alkaline aqueous solution inlet, 2-main spray pipe, 3-spray branch pipe, 4-spray port, 5-tower outer support pipe, 6-tower inner support plate, 7-tower inner support rectangular tube, 8-fixing ring. DETAILED DESCRIPTION

[0014] The utility model is further described below in conjunction with the accompanying drawings.

[0015] Reference Figure 1 A spray device for a desulfurization tower comprises a main spray pipe 2, a spray branch pipe 3, a spray port 4, an outer support pipe 5, an inner support plate 6, an inner support rectangular pipe 7 and a fixing ring 8, wherein the outer end of the main spray pipe 2 is an alkaline aqueous solution inlet 1, and the alkaline aqueous solution inlet 1 is located outside the tower. The alkaline aqueous solution sprays the solution through the spray port 4 on the spray pipe in the tower to react with the acidic gas in the tower to generate an acid-base neutralization reaction so that the acidic gas in the gas is absorbed; the spray port 4 is arranged downward on the main spray pipe 2 and the spray branch pipe 3 in the tower for spraying the solution; a support plate 6 is provided in the tower, the main spray pipe 2 is fixed on the outer support pipe 5 and the inner support plate 6, and a plurality of spray branch pipes 3 are arranged on the main spray pipe 2 to expand the spray range of the solution. The spray branch pipe 3 is fixed to the branch pipe outlet of the main spray pipe 2 by bolts; two supporting rectangular pipes 7 are arranged in the tower, and the spray branch pipe is positioned by a fixing ring 8 to limit the relative position with the supporting rectangular pipe 7.

[0016] The spray ports 4 are distributed in concentric circles, so that the alkaline solution is sprayed more evenly. The diameter of the spray branch pipe 3 is smaller than that of the main spray pipe 2, so as to increase the spray pressure. The spray branch pipes 3 are all perpendicular to the main spray pipe 2.

[0017] The device of this embodiment is used as a desulfurization tower spray device. The alkaline solution enters the main spray pipe from the inlet and is branched from the main spray pipe to each spray branch pipe. The diameter of the spray branch pipe is smaller than the diameter of the main spray pipe to increase the solution pressure. The spray ports in the whole device are distributed in concentric circles, which can ensure that the sprayed solution can evenly cover the entire interface, thereby improving the absorption rate of the alkaline solution to the acidic gas and improving the utilization rate of the alkaline solution.

[0018] The contents described in the embodiments of this specification are merely enumerations of implementation forms of the utility model concept and are for illustrative purposes only. The protection scope of the utility model should not be considered to be limited to the specific forms described in this embodiment, and the protection scope of the utility model also extends to equivalent technical means that ordinary technicians in this field can think of based on the concept of the utility model.

Claims

1. A spray device for a desulfurization tower, characterized in that: The device includes a main spray pipe, a spray branch pipe, a spray port, an outer support pipe and an inner support plate. The outer end of the main spray pipe is an inlet for an alkaline aqueous solution, and the inlet for the alkaline aqueous solution is located outside the tower. The main spray pipe is fixed on the outer support pipe and the inner support plate. A plurality of spray branch pipes are arranged on the main spray pipe in the tower. The diameter of the spray branch pipe is smaller than that of the main spray pipe. The spray port is arranged downward on the main spray pipe and the spray branch pipe in the tower, and the spray port is distributed in concentric circles with the center of the cross section of the desulfurization tower.

2. A spray device for a desulfurization tower as claimed in claim 1, characterized in that: The spray branch pipe is fixed to the branch pipe outlet of the main spray pipe by bolts.

3. A spray device for a desulfurization tower as claimed in claim 1 or 2, characterized in that: Two supporting rectangular tubes are arranged in the tower, and the spray branch pipes are fixed on the supporting rectangular tubes.

4. A spray device for a desulfurization tower as claimed in claim 3, characterized in that: The spray branch pipe is positioned by a fixing ring and is limited to a relative position of the supporting rectangular pipe.

5. A spray device for a desulfurization tower as claimed in claim 1 or 2, characterized in that: The spray branch pipes are all perpendicular to the main spray pipe.

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