Efficient aeration system for seawater desulfurization

Abstract

The efficient aeration system for seawater desulfurization comprises a first supporting platform, an aeration tank, a rear transverse partition plate, a longitudinal partition plate, an upper aeration device, a second supporting platform, a low-pressure fan, an upper aeration connecting pipe, a lower aeration device, a high-pressure fan, a lower aeration connecting pipe and a front transverse partition plate, a first supporting platform and a second supporting platform are arranged on the left side and the right side of the aeration tank respectively, a high-pressure fan and a low-pressure fan are installed on the first supporting platform and the second supporting platform respectively, and the aeration tank is sequentially divided into an aeration tank water inlet area, an aeration area and an aeration tank water drainage area from back to front through a rear transverse partition plate and a front transverse partition plate. The longitudinal partition plates are perpendicular to the rear transverse partition plate and the front transverse partition plate, the aeration area is divided into n + 1 spaces by the n longitudinal partition plates, a lower aeration device is arranged on the bottom surface close to the aeration area and is connected with a high-pressure fan through a lower aeration connecting pipe, and an upper aeration device is arranged below the water surface close to the aeration area and is connected with a high-pressure fan through a lower aeration connecting pipe. And the upper aeration device is connected with a low-pressure fan through an upper aeration connecting pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of wet flue gas desulfurization, and relates to a seawater recovery system for seawater desulfurization, in particular to an efficient aeration system for seawater desulfurization. Background Art

[0002] In seawater desulfurization technology, the aeration tank is an important component. Its principle is to send fresh air into the aeration tank through a fan, and aerate the acidic seawater that has absorbed SO 2 so that the treated seawater meets environmental protection standards.

[0003] In traditional technology, the aeration system consumes a large amount of air, and the electric energy consumed by the aeration fan accounts for most of the entire desulfurization system. Therefore, reducing the power consumption of the aeration system can achieve obvious economic benefits. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the invention object of the present application is to provide an efficient aeration system for seawater desulfurization. By adopting a two-layer aeration system with different depths in the pool, the utilization efficiency of the aeration air can be improved, and the energy consumption of the seawater desulfurization aeration system can be reduced.

[0005] In order to achieve the invention object of the present utility model, the present utility model adopts the following technical solutions:

[0006] An efficient aeration system for seawater desulfurization of the present utility model includes: a first support platform, an aeration tank, a rear transverse partition, a longitudinal partition, an upper aeration device, a second support platform, a low-pressure fan, an upper aeration connecting pipe, a lower aeration device, a high-pressure fan, a lower aeration connecting pipe, and a front transverse partition. There are a first support platform and a second support platform on the left and right sides of the aeration tank respectively. A high-pressure fan and a low-pressure fan are installed on the first support platform and the second support platform respectively. The rear transverse partition and the front transverse partition divide the aeration tank into an aeration tank water inlet area, an aeration area, and an aeration tank water drainage area in sequence from back to front. The longitudinal partition is perpendicular to the rear transverse partition and the front transverse partition, and the aeration area is divided into n + 1 spaces by n longitudinal partitions. Among them: a lower aeration device is installed on the bottom surface near the aeration area, and the lower aeration device is connected to the high-pressure fan through the lower aeration connecting pipe. An upper aeration device is installed below the water surface near the aeration area, and the upper aeration device is connected to the low-pressure fan through the upper aeration connecting pipe. Seawater enters the aeration area from the aeration tank water inlet area, and after desulfurization under the aeration action of the lower aeration device and the upper aeration device, it enters the aeration tank water drainage area.

[0007] In the efficient aeration system for seawater desulfurization of the present utility model, among them: n + 1 water inlets leading to n + 1 spaces in the aeration area are respectively opened on the rear transverse partition, and n is an integer greater than 2.

[0008] The high-efficiency aeration system for seawater desulfurization of the present utility model, wherein: the depth of the aeration tank is not less than 3.5 meters.

[0009] The high-efficiency aeration system for seawater desulfurization of the present utility model, wherein: the upper aeration device and the lower aeration device are straight pipes, coiled pipes or a combination of straight pipes and coiled pipes, and there are several aeration holes on the above-mentioned straight pipes or coiled pipes.

[0010] The high-efficiency aeration system for seawater desulfurization of the present utility model, wherein: the distance between the lower aeration device and the bottom surface of the aeration area is 0.1 - 1.5 meters, the lower aeration device passes through the lower ends of each longitudinal partition, the longitudinal partition provides support for the lower aeration device, and the diameter of the aeration holes on the lower aeration device is 0.2mm - 3mm.

[0011] The high-efficiency aeration system for seawater desulfurization of the present utility model, wherein: the depth of the upper aeration device below the liquid level is 1 - 3 meters, the upper aeration device passes through the upper ends of each longitudinal partition, the longitudinal partition provides support for the upper aeration device, and the diameter of the aeration holes on the upper aeration device is 3mm - 10mm.

[0012] The high-efficiency aeration system for seawater desulfurization of the present utility model, wherein: the output pressure of the high-pressure blower is 40 - 120Kpa.

[0013] The high-efficiency aeration system for seawater desulfurization of the present utility model, wherein: the output pressure of the low-pressure blower is 15 - 30Kpa.

[0014] The present utility model provides a high-efficiency aeration device for seawater desulfurization, which has the following beneficial effects:

[0015] (1), The present utility model adopts two layers of aeration devices with different depths, effectively saving the occupied space of the aeration tank; the two layers of aeration devices can improve the utilization efficiency of oxygen in the aeration air; by adjusting the air volume of the upper aeration device and the lower aeration device, the most economical energy consumption under the operating conditions that meet the environmental protection emission standards can be achieved.

[0016] (2), The lower aeration device of the present utility model is arranged below the deep liquid level, which can improve the oxygenation efficiency; the upper aeration device is arranged at the shallow liquid level, which can reduce the aeration wind pressure and energy consumption.

[0017] (3), Compared with the conventional aeration system, the high-efficiency aeration system for seawater desulfurization of the present utility model can reduce the power consumption of the aeration blower by 5 - 20%. Description of the Drawings

[0018] Figure 1 It is a top view schematic diagram of the high-efficiency aeration system for seawater desulfurization of the present utility model. In the figure, the arrow indicates the direction of water flow. For the sake of clarity, Figure 1A partial cross-section is made;

[0019] Figure 2 It is Figure 1 A schematic cross-sectional view at A-A.

[0020] In Figure 1 and Figure 2 Among them, label 1 is the first support platform; label 2 is the aeration tank; label 3 is the rear transverse partition; label 4 is the longitudinal partition; label 5 is the water inlet; label 6 is the aeration tank water inlet area; label 7 is the upper aeration device; label 8 is the second support platform; label 9 is the low-pressure blower; label 10 is the upper aeration connecting pipe; label 11 is the aeration tank drainage area; label 12 is the aeration area; label 13 is the lower aeration device; label 14 is the high-pressure blower; label 15 is the lower aeration connecting pipe; label 16 is the front transverse partition. Specific implementation mode

[0021] As Figure 1 and Figure 2 shown, the high-efficiency aeration system for seawater desulfurization of the present utility model includes: the first support platform 1, the aeration tank 2, the rear transverse partition 3, the longitudinal partition 4, the upper aeration device 7, the second support platform 8, the low-pressure blower 9, the upper aeration connecting pipe 10, the lower aeration device 13, the high-pressure blower 14, the lower aeration connecting pipe 15 and the front transverse partition 16. There are the first support platform 1 and the second support platform 8 on the left and right sides of the aeration tank 2 respectively. The high-pressure blower 14 and the low-pressure blower 9 are respectively installed on the first support platform 1 and the second support platform 8. The rear transverse partition 3 and the front transverse partition 16 divide the aeration tank 2 into the aeration tank water inlet area 6, the aeration area 12 and the aeration tank drainage area 11 in sequence from the rear to the front. The longitudinal partition 4 is perpendicular to the rear transverse partition 3 and the front transverse partition 16. The aeration area 12 is divided into n + 1 spaces by n longitudinal partitions 4, where n is an integer greater than 2. The lower aeration device 13 is installed near the bottom surface of the aeration area 12. The lower aeration device 13 is connected to the high-pressure blower 14 through the lower aeration connecting pipe 15. The upper aeration device 7 is installed below the water surface of the aeration area 12. The upper aeration device 7 is connected to the low-pressure blower 9 through the upper aeration connecting pipe 10. As Figure 1 shown by the arrow direction in, seawater overflows the rear transverse partition 3 or enters the aeration area 12 through the water inlet 5 opened on the transverse partition 3, and is desulfurized under the aeration action of the lower aeration device 13 and the upper aeration device 7, and then overflows the front transverse partition 16 and enters the aeration tank drainage area 11.

[0022] The depth of the aeration tank 2 is not less than 3.5 meters. The upper aeration device 7 and the lower aeration device 13 are straight pipes, coiled pipes or a combination of straight pipes and coiled pipes. There are several aeration holes on the above-mentioned straight pipes or coiled pipes.

[0023] The distance between the lower aeration device 13 and the bottom surface of the aeration area 12 is 0.1 - 1.5 meters. The lower aeration device 13 passes through the lower ends of each longitudinal partition 4, and the longitudinal partition 4 provides support for the lower aeration device 13. The diameter of the aeration holes on the aeration device 13 is 0.2 mm - 3 mm.

[0024] The depth of the upper aeration device 7 below the liquid level is 1 - 3 meters. The upper aeration device 7 passes through the upper ends of each longitudinal partition 4, and the longitudinal partition 4 provides support for the upper aeration device 7. The diameter of the aeration holes on the upper aeration device 7 is 3 mm - 10 mm.

[0025] The output pressure of the high-pressure blower 14 is 40 - 120 Kpa; the output pressure of the low-pressure blower 9 is 15 - 30 Kpa.

[0026] The high-pressure blower 14 extracts air and blows it into the lower aeration device 13 through the lower aeration connecting pipe 15 at a certain pressure. The air enters the aeration area 12 through the aeration holes distributed on the lower aeration device 13. The materials of the lower aeration device 3 and the air ducts can be metal, plastic, or fiberglass.

[0027] The low-pressure blower 9 extracts air and blows it into the upper aeration device 7 through the upper aeration connecting pipe 10 at a certain pressure. The air enters the aeration area 12 through the aeration holes distributed on the upper aeration device 7. The materials of the upper aeration device 7 and the air ducts can be metal, plastic, or fiberglass.

[0028] When the aeration tank 2 is operating, the desulfurized seawater enters the inlet area 6 of the aeration tank. After the flow is distributed by the rear transverse partition 3 or / and the water inlet 5, it enters the aeration area 12 for aeration treatment, then passes through the front transverse partition 16, and finally enters the drainage area 11 of the aeration tank. The height of the longitudinal partition 4 in the aeration tank 2 exceeds the liquid level, dividing the aeration area 12 into several parallel flow channels.

[0029] When the aeration tank 2 is operating, seawater enters the inlet area 6 of the aeration tank and flows sequentially to the aeration area 12 and the drainage area 11 of the aeration tank. The high-pressure blower 14 and the low-pressure blower 9 are started, and air is blown into the aeration holes of the upper aeration device 7 and the lower aeration device 13 arranged in the aeration area 12 to perform aeration recovery treatment on the seawater.

[0030] According to the real-time detection of the index values of the treated seawater in the aeration and drainage tank 11, actively adjusting the air volume of the high-pressure blower 14 and the low-pressure blower 9 can reduce the energy consumption of the aeration blower to the optimal economic operating condition, thereby achieving the reduction of the energy consumption of the entire aeration system.

[0031] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. An efficient aeration system for seawater desulfurization, comprising: A first supporting platform (1), an aeration tank (2), a rear transverse partition (3), a longitudinal partition (4), an upper aeration device (7), a second supporting platform (8), a low-pressure fan (9), an upper aeration connecting pipe (10), a lower aeration device (13), a high-pressure fan (14), a lower aeration connecting pipe (15) and a front transverse partition (16). The first supporting platform (1) and the second supporting platform (8) are respectively provided on the left and right sides of the aeration tank (2). The high-pressure fan (14) and the low-pressure fan (9) are respectively provided on the first supporting platform (1) and the second supporting platform (8). The rear transverse partition (3) and the front transverse partition (16) divide the aeration tank (2) into an aeration tank water inlet area (6), an aeration area (12) and an aeration tank drainage area (13) from the back to the front. 11), the longitudinal partition (4) is perpendicular to the rear transverse partition (3) and the front transverse partition (16), and the aeration zone (12) is divided into n+1 spaces by n longitudinal partitions (4), characterized in that: a lower aeration device (13) is installed on the bottom surface close to the aeration zone (12), and the lower aeration device (13) is connected to a high-pressure fan (14) through a lower aeration connecting pipe (15); an upper aeration device (7) is installed below the water surface of the aeration zone (12), and the upper aeration device (7) is connected to a low-pressure fan (9) through an upper aeration connecting pipe (10); seawater enters the aeration zone (12) from the aeration tank inlet zone (6), is desulfurized under the aeration action of the lower aeration device (13) and the upper aeration device (7), and then enters the aeration tank discharge zone (11).

2. The high-efficiency aeration system for seawater desulfurization according to claim 1, characterized in that: The rear transverse partition (3) is provided with n+1 water inlets (5) leading to n+1 spaces of the aeration zone (12), respectively, where n is an integer greater than 2.

3. The high-efficiency aeration system for seawater desulfurization according to claim 2, characterized in that: The depth of the aeration tank (2) is not less than 3.5 meters.

4. The high-efficiency aeration system for seawater desulfurization according to claim 3, characterized in that: The upper aeration device (7) and the lower aeration device (13) are straight pipes, coiled pipes, or a combination of straight pipes and coiled pipes, and the straight pipes or coiled pipes are provided with a plurality of aeration holes.

5. The high-efficiency aeration system for seawater desulfurization according to claim 4, characterized in that: The lower aeration device (13) is 0.1-1.5 meters away from the bottom surface of the aeration zone (12). The lower aeration device (13) passes through the lower ends of each longitudinal partition (4). The longitudinal partition (4) provides support for the lower aeration device (13). The diameter of the aeration holes on the lower aeration device (13) is 0.2 mm-3 mm.

6. The high-efficiency aeration system for seawater desulfurization according to claim 4, characterized in that: The upper aeration device (7) is 1-3 meters deep below the liquid surface. The upper aeration device (7) passes through the upper ends of each longitudinal partition (4). The longitudinal partition (4) provides support for the upper aeration device (7). The diameter of the aeration holes on the upper aeration device (7) is 3 mm-10 mm.

7. The high-efficiency aeration system for seawater desulfurization according to claim 5 or 6, characterized in that: The output pressure of the high-pressure blower (14) is 40-120 KPa.

8. The high-efficiency aeration system for seawater desulfurization according to claim 5 or 6, characterized in that: The output pressure of the low-pressure fan (9) is 15-30Kpa.

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