Brickyard waste gas desulfurization tower

Abstract

The utility model provides a brickyard waste gas desulfurizing tower, which relates to the technical field of desulfurizing devices and comprises an air inlet pipe, a dust collecting bin, a dust falling pipe, a primary desulfurizing tower, a secondary desulfurizing tower and a desulfurizing liquid tank, an air outlet of the air inlet pipe is communicated with the dust collecting bin, the top of the dust collecting bin is communicated with an air inlet of the dust falling pipe, and an air outlet of the dust falling pipe is communicated with the lower portion of the primary desulfurizing tower. A fan and an air outlet pipe are mounted at the top of the primary desulfurization tower and are communicated with the lower part of the secondary desulfurization tower, an air outlet is formed in the top of the secondary desulfurization tower, a desulfurization liquid tank is connected with spray pipes in the primary desulfurization tower and the secondary desulfurization tower through supply pipes, and the desulfurization liquid tank is communicated with liquid outlets in the bottoms of the primary desulfurization tower and the secondary desulfurization tower through recovery pipes; the device can solve the problems that the waste gas of the brickyard contains dust impurities and can settle into a recovery system along with a desulfurization solution in the desulfurization process, and the flue gas and the desulfurization solution of a traditional spray pipe are not in sufficient contact and the desulfurization efficiency is poor.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization devices, in particular to a waste gas desulfurization tower for a brick factory. Background Art

[0002] The brick production process is accompanied by the production of harmful gases such as sulfur dioxide, which poses a great threat to air quality and human health. Sulfur dioxide emissions will produce acid rain, which has a significant impact on soil acidification and damage to vegetation. Long-term exposure to a high concentration of sulfur dioxide may also lead to respiratory diseases and health problems.

[0003] Common desulfurization methods in brick factories are wet desulfurization and dry desulfurization. Wet desulfurization uses aqueous solution or alkaline desulfurization solution to absorb sulfur dioxide. The flue gas generated by the brick factory is passed into the desulfurization tower, and the sulfur dioxide in the flue gas contacts with the desulfurization liquid sprayed from the desulfurization tower and is absorbed.

[0004] At present, the desulfurization tower used for desulfurization of waste gas in brick factories has the following problems: first, the waste gas in brick factories contains dust impurities, which will settle into the recovery system with the desulfurization liquid during the desulfurization process, which will not only reduce the concentration of the desulfurization liquid, but also cause pipeline blockage and require frequent maintenance; second, the desulfurization liquid sprayed by the traditional spray pipe does not contact the flue gas sufficiently and evenly, leaving residues in the exhaust gas, and the desulfurization efficiency is poor. Therefore, this application proposes a desulfurization tower for waste gas in brick factories. Utility Model Content

[0005] In order to overcome the problems in the background technology, the utility model provides a brick factory waste gas desulfurization tower to solve the problem that the brick factory waste gas contains dust impurities in the desulfurization tower currently used for brick factory waste gas desulfurization, which will settle into the recovery system with the desulfurization liquid during the desulfurization process, causing the concentration of the desulfurization liquid to decrease and causing pipeline blockage, as well as the problem that the flue gas in the traditional spray pipe is not in sufficient contact with the desulfurization liquid, resulting in poor desulfurization efficiency.

[0006] To achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a brick factory waste gas desulfurization tower, including an air inlet pipe, a dust collecting bin, a dust reduction pipe, a primary desulfurization tower, a secondary desulfurization tower and a desulfurization liquid tank, the air outlet of the air inlet pipe is connected with the dust collecting bin, the top of the dust collecting bin is connected with the air inlet of the dust reduction pipe, the air outlet of the dust reduction pipe is connected with the lower part of the primary desulfurization tower, a fan and an air outlet pipe are installed on the top of the primary desulfurization tower and are connected with the lower part of the secondary desulfurization tower, the top of the secondary desulfurization tower is the air outlet, the desulfurization liquid tank is connected with the spray pipes in the primary desulfurization tower and the secondary desulfurization tower through a supply pipe, and the desulfurization liquid tank is connected with the discharge port at the bottom of the primary desulfurization tower and the secondary desulfurization tower through a recovery pipe.

[0007] Furthermore, a dust shield is installed in the dust suppression pipe above the dust collecting bin, and a vent hole is provided on the dust shield.

[0008] Furthermore, multiple stages of spray pipes are installed at intervals in the primary desulfurization tower.

[0009] Furthermore, a spray pipe is installed on the top of the secondary desulfurization tower, a tray is installed in the middle of the secondary desulfurization tower, the tray body of the tray is evenly provided with through holes, and a number of absorption balls are placed on the tray.

[0010] Furthermore, a plurality of reaction channels for contacting water and gas are provided on the surface and inside of each absorption ball.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The present application is provided with a dust reduction pipe, a primary desulfurization tower and a secondary desulfurization tower. The dust reduction pipe can reduce the dust impurity content in the flue gas of the brick factory. The primary desulfurization tower and the secondary desulfurization tower can make the desulfurization liquid fully contact with the exhaust gas to improve the desulfurization rate, which solves the problem that the desulfurization tower currently used for desulfurization of waste gas from brick factories contains dust impurities in the waste gas from the brick factories, which will settle into the recovery system with the desulfurization liquid during the desulfurization process, resulting in a decrease in the concentration of the desulfurization liquid and causing pipeline blockage, as well as the problem that the flue gas from the traditional spray pipe is not in sufficient contact with the desulfurization liquid, resulting in poor desulfurization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for use in describing the embodiments are described.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0016] Figure 3 It is a side structural schematic diagram of the utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the secondary desulfurization tower of the utility model.

[0018] 1-air duct, 2-dust collecting bin, 3-dust suppression pipe, 31-dust shield, 4-primary desulfurization tower, 5-secondary desulfurization tower, 51-air outlet, 52-tray, 6-desulfurization liquid tank, 61-supply pipe, 62-recovery pipe, 7-fan, 8-spray pipe, 9-absorption ball, 91-reaction channel. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to facilitate understanding by technicians.

[0020] The utility model discloses a brick factory waste gas desulfurization tower, see Figure 1-4 A brick factory exhaust gas desulfurization tower comprises an air inlet pipe 1, a dust collecting bin 2, a dust reduction pipe 3, a primary desulfurization tower 4, a secondary desulfurization tower 5 and a desulfurization liquid tank 6, the air outlet of the air inlet pipe 1 is connected with the dust collecting bin 2, the top of the dust collecting bin 2 is connected with the air inlet of the dust reduction pipe 3, the air outlet of the dust reduction pipe 3 is connected with the lower part of the primary desulfurization tower 4, a fan 7 and an air outlet pipe are installed on the top of the primary desulfurization tower 4 and are connected with the lower part of the secondary desulfurization tower 5, the top of the secondary desulfurization tower 5 is an air outlet 51, the desulfurization liquid tank 6 is connected with the spray pipe 8 in the primary desulfurization tower 4 and the secondary desulfurization tower 5 through a supply pipe 61, and the desulfurization liquid tank 6 is connected with the discharge port at the bottom of the primary desulfurization tower 4 and the secondary desulfurization tower 5 through a recovery pipe 62.

[0021] The waste gas from the brick factory can enter the dust collecting bin 2 through the air inlet pipe 1, and after most of the smoke and dust impurities in the waste gas are removed through the dust reduction pipe 3 on the top of the dust collecting bin 2, it enters the primary desulfurization tower 4 for primary desulfurization and impurity removal. The fan 7 can discharge the waste gas after the primary desulfurization into the secondary desulfurization tower 5. In the secondary desulfurization tower 5, the desulfurization liquid can fully contact with the waste gas to improve the desulfurization rate. The desulfurized waste gas can be discharged through the air outlet 51 on the top of the secondary desulfurization tower 5. During the desulfurization process, the pump in the desulfurization liquid tank 6 pumps the desulfurization liquid to the spray pipe 8 through the supply pipe 61, and the desulfurized liquid after the reaction passes through the discharge ports at the bottom of the primary desulfurization tower 4 and the secondary desulfurization tower 5 into the recovery pipe 62 and is discharged into the recovery tank.

[0022] See also Figure 1-4 A dust shield 31 is installed in the dust suppression pipe 3 above the dust collecting bin 2. The dust shield 31 is provided with air holes. The dust shield 31 allows lighter gases to pass through, and heavier particulate impurities are gradually settled down, thereby reducing the particulate impurities entering the desulfurization tower.

[0023] See also Figure 1-4 The first-stage desulfurization tower 4 is provided with multiple spray pipes at intervals, and the desulfurization liquid reacts with the exhaust gas to neutralize the sulfur-containing components in the exhaust gas after contacting the exhaust gas.

[0024] See also Figure 1-4 A spray pipe 8 is installed on the top of the secondary desulfurization tower 5, and a tray 52 is installed in the middle of the secondary desulfurization tower 5. The tray body of the tray 52 is evenly provided with through holes. A number of absorption balls 9 are placed on the tray 52. ​​The absorption balls 9 can increase the contact time and contact area between the desulfurization liquid and the exhaust gas, thereby improving the desulfurization rate.

[0025] See also Figure 1-4 A plurality of reaction channels 91 for contacting water and gas are provided on the surface and inside of each absorption ball 9 , and the waste gas and the desulfurization liquid can fully contact and react with each other in the narrow reaction channels 91 .

[0026] Working process:

[0027] The waste gas from the brick factory enters the dust collecting bin 2 through the air inlet pipe 1, and most of the impurities are removed through the dust removal pipe 3 on the top of the dust collecting bin 2. Then, it enters the primary desulfurization tower 4 through the pipeline. The pump in the desulfurization liquid tank 6 pumps the desulfurization liquid to the spray pipe 8 through the supply pipe 61, and the waste gas contacts with the desulfurization liquid. The desulfurization liquid after the reaction passes through the discharge ports at the bottom of the primary desulfurization tower 4 and the secondary desulfurization tower 5 and enters the recovery pipe 62 and is discharged into the recovery tank. The waste gas after the initial desulfurization is drawn into the secondary desulfurization tower 5 by the fan 7, and the desulfurization liquid contacts the waste gas more fully in the secondary desulfurization tower 5. The desulfurized waste gas can be discharged through the air outlet 51 at the top of the secondary desulfurization tower 5, and the dust shield 31 and the absorption ball 9 are cleaned regularly.

[0028] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A brick factory waste gas desulfurization tower, characterized in that: The invention comprises an air inlet pipe (1), a dust collecting bin (2), a dust reduction pipe (3), a primary desulfurization tower (4), a secondary desulfurization tower (5) and a desulfurization liquid tank (6), wherein the air outlet of the air inlet pipe (1) is connected to the dust collecting bin (2), the top of the dust collecting bin (2) is connected to the air inlet of the dust reduction pipe (3), the air outlet of the dust reduction pipe (3) is connected to the lower part of the primary desulfurization tower (4), a fan (7) and an air outlet pipe are installed on the top of the primary desulfurization tower (4) and are connected to the lower part of the secondary desulfurization tower (5), the top of the secondary desulfurization tower (5) is an air outlet (51), the desulfurization liquid tank (6) is connected to the spray pipes (8) in the primary desulfurization tower (4) and the secondary desulfurization tower (5) through a supply pipe (61), and the desulfurization liquid tank (6) is connected to the discharge ports at the bottom of the primary desulfurization tower (4) and the secondary desulfurization tower (5) through a recovery pipe (62).

2. The brick factory waste gas desulfurization tower according to claim 1, characterized in that: A dust shield (31) is installed in the dust suppression pipe (3) above the dust collecting bin (2), and a ventilation hole is provided on the dust shield (31).

3. The brick factory waste gas desulfurization tower according to claim 1, characterized in that: Multiple stages of spray pipes are installed at intervals inside the primary desulfurization tower (4).

4. The brick factory waste gas desulfurization tower according to claim 1, characterized in that: A spray pipe (8) is installed on the top of the secondary desulfurization tower (5), and a tray (52) is installed in the middle of the secondary desulfurization tower (5). The tray body of the tray (52) is evenly provided with through holes, and a plurality of absorption balls (9) are placed on the tray (52).

5. The brick factory waste gas desulfurization tower according to claim 4, characterized in that: A plurality of reaction channels (91) for contacting water and gas are provided on the surface and inside of each absorption ball (9).

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