CN221889588U - Configuration structure of horizontal desulfurization system for aluminum electrolysis flue gas - Google Patents
Configuration structure of horizontal desulfurization system for aluminum electrolysis flue gas Download PDFInfo
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Abstract
本实用新型涉及一种脱硫系统配置结构技术领域，尤其涉及一种铝电解烟气卧式脱硫系统的配置结构，在卧式脱硫反应装置下部设有烟气进口，烟气进口与第一管道连通，卧式脱硫反应装置顶部或上部的烟气出口通过第二管道与烟囱连通，其中卧式脱硫反应装置分两排设置，烟囱设在两排卧式脱硫反应装置之间或外侧，烟囱的下部腔内设有隔板，隔板下方为循环浆液池，在卧式脱硫反应装置的下方设有设备间、配电室和自控室。本实用新型脱硫系统脱硫效率高，能耗低，占地面积小，运行稳定，维护检修方便。
The utility model relates to the technical field of a desulfurization system configuration structure, and in particular to a configuration structure of a horizontal desulfurization system for aluminum electrolysis flue gas, wherein a flue gas inlet is provided at the bottom of a horizontal desulfurization reaction device, the flue gas inlet is connected to a first pipeline, and a flue gas outlet at the top or upper part of the horizontal desulfurization reaction device is connected to a chimney through a second pipeline, wherein the horizontal desulfurization reaction device is arranged in two rows, the chimney is arranged between or outside the two rows of horizontal desulfurization reaction devices, a partition is provided in the lower cavity of the chimney, a circulating slurry pool is provided below the partition, and an equipment room, a power distribution room and an automatic control room are provided below the horizontal desulfurization reaction device. The desulfurization system of the utility model has high desulfurization efficiency, low energy consumption, small footprint, stable operation, and convenient maintenance and repair.
Description
Technical Field
The utility model relates to the technical field of configuration structures of desulfurization systems, in particular to a configuration structure of an aluminum electrolysis flue gas horizontal desulfurization system.
Background
The electrolytic aluminum belongs to the industry with high pollution and high energy consumption, so that the environment protection requirement is met while the low energy consumption is controlled.
Under the dual pressures of carbon emission and environmental protection, development of an efficient energy-saving desulfurization system is needed. At present, the aluminum electrolysis flue gas desulfurization generally adopts a semi-dry desulfurization method and a limestone-gypsum wet desulfurization method. The semi-dry desulfurization has the defects of low desulfurization efficiency, high energy consumption, large dosage of desulfurizing agent, and more impurities of the desulfurized solid waste, and is not easy to sell.
The limestone gypsum wet desulfurization generally adopts a vertical desulfurization tower, the energy consumption mainly comes from the energy consumption of a main induced air blower caused by the resistance of the desulfurization tower and the energy consumption of a circulating pump caused by circulating spraying, and the main induced air blower has high energy consumption due to the high flow rate of flue gas in the vertical desulfurization tower and more spraying layers, so the resistance in the tower is high. Because the liquid-gas ratio is higher, the spraying layer is higher, so the flow of the circulating pump is large, the lift is high, and the energy consumption of the circulating pump is high. Therefore, the conventional vertical desulfurizing tower has high energy consumption. In addition, the inside of the vertical desulfurizing tower needs to be overhauled regularly to replace the anticorrosive material. Because the overhaul time is generally longer, a standby desulfurizing tower is needed to be arranged, the manufacturing cost is high, and the occupied area is large.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a configuration structure of an aluminum electrolysis flue gas horizontal desulfurization system, which aims to reduce the energy consumption of aluminum electrolysis flue gas desulfurization while improving the desulfurization efficiency, and reduce the occupied area by reasonable configuration.
To achieve the above object, the present utility model is achieved by:
The configuration structure of the horizontal desulfurization system for aluminum electrolysis flue gas is characterized in that a flue gas inlet is arranged at the lower part of a horizontal desulfurization reaction device, the flue gas inlet is communicated with a first pipeline, a flue gas outlet at the top or the upper part of the horizontal desulfurization reaction device is communicated with a chimney through a second pipeline, wherein the horizontal desulfurization reaction device is arranged in two rows, the chimney is arranged between or outside the two rows of horizontal desulfurization reaction devices, a partition plate is arranged in a lower cavity of the chimney, a circulating slurry pool is arranged below the partition plate, and an equipment room, a distribution room and an automatic control room are arranged below the horizontal desulfurization reaction device.
The number of the horizontal desulfurization reaction devices in each row is 1-3, and the flue gas inlet of each horizontal desulfurization reaction device is arranged at the lower part of the end part or the lower part of the side surface.
The bottom surface of the horizontal desulfurization reaction device is rectangular, the height of the horizontal desulfurization reaction device is 3-10m, and a collision ejection device is arranged above a flue gas inlet in a cavity of the horizontal desulfurization reaction device; a spraying layer is arranged in the middle of the cavity of the horizontal desulfurization reaction device above the collision ejection device; the upper part in the cavity of the horizontal desulfurization reaction device is provided with a dust removal demister above the spraying layer.
The top surface of the flue gas outlet side of the horizontal desulfurization reaction device is higher than the top surface of the flue gas inlet side, and the height of the collision ejection device at the flue gas inlet side is higher than that at the flue gas outlet side.
The collision ejection device is a grating plate, and the size of the pore of the grating plate gradually increases from the flue gas inlet side to the other side.
When the chimney is arranged on the outer side of one side of the smoke outlets of the two rows of horizontal desulfurization reaction devices, the chimney and the two smoke outlets form an acute triangle.
The circulating slurry pump, the standby slurry tank, the oxidation wind system and the process water system are arranged in the equipment room, the circulating slurry tank and the standby slurry tank are respectively connected with the horizontal desulfurization reaction device through the circulating slurry pump, and the oxidation wind system is connected with the circulating slurry tank and the standby slurry tank through pipelines.
The low-voltage power supply and distribution system is arranged in the power distribution room, and the automatic control system is arranged in the automatic control room.
When the number of the horizontal desulfurization reaction devices in each row is more than 1, the horizontal desulfurization reaction devices are arranged in parallel on the vertical surface.
And a fan is arranged on the first pipeline.
The utility model has the advantages that:
1. The utility model adopts a horizontal desulfurization reaction device, and enhances the desulfurization reaction through collision ejection, so that the liquid-gas ratio is low, and the desulfurization efficiency is high.
2. Compared with the traditional vertical desulfurizing tower, the horizontal desulfurizing tower has less spraying layers, and the horizontal desulfurizing reactor has low flow rate and less spraying layers, so the equipment resistance is low. The circulating pump flow is small because of low liquid-gas ratio, and the circulating pump is directly arranged below the horizontal desulfurization reaction device because of low height of the horizontal desulfurization reaction device, and the flowing distance is small, so that the lift of the circulating pump is low, and the energy consumption of the circulating pump is low. Therefore, the energy consumption of the utility model is far lower than that of the traditional limestone-gypsum desulfurization method.
3. The circulating slurry pool is arranged below the chimney and is separated from the chimney, so that the occupied area of the system is effectively reduced, and the smoke exhaust of the chimney is not influenced when the circulating slurry pool needs maintenance and overhaul.
4. The utility model is provided with the standby slurry pool, and can be directly switched to the standby slurry pool when the circulating slurry pool needs maintenance and overhaul, thereby ensuring the stable operation of the system.
5. The standby slurry pool can also be used as an accident slurry pool in the accident state of the system, so that the engineering quantity of the system is reduced.
6. The equipment room, the distribution room and the automatic control room are all arranged below the horizontal desulfurization reaction device, so that the occupied area of the system is effectively saved.
7. The utility model is generally provided with two horizontal desulfurization reaction devices, and the two horizontal desulfurization reaction devices are put into use when the system is in normal operation, and one device can be used for treating the flue gas of the whole system temporarily when the system is maintained and overhauled. The investment cost of the vertical desulfurizing tower, namely the equipment corrosion and the maintenance cost caused by the fact that the standby device is not put into use for a long time are avoided.
Drawings
Fig. 1 is a top view of embodiment 1 of the present utility model.
Fig. 2 is a partial front view of embodiment 1 of the present utility model.
Fig. 3 is a top view of embodiment 2 of the present utility model.
Fig. 4 is a partial front view of embodiment 2 of the present utility model.
FIG. 5 is a front view of a horizontal desulfurization reaction apparatus according to the present utility model.
FIG. 6 is a front view of a horizontal desulfurization reaction apparatus in example 4.
FIG. 7 is a front view showing the overlapping arrangement of 3 horizontal desulfurization units in example 6.
In the figure: 1. an electrolytic flue gas defluorination system; 2. a blower; 3. a horizontal desulfurization reaction device; 4. equipment room, distribution room and automatic control room; 5. a chimney; 6. circulating a slurry pond; 7. a first pipe; 8. a flue gas inlet; 9. a second pipe; 10. a flue gas outlet; 11. a collision ejection device; 12. spraying a layer; 13. a dust and mist remover; 14. circulating a slurry pump; 15. a liquid outlet; 16. a partition board.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
As shown in the figure, in the configuration structure of the horizontal aluminum electrolysis flue gas desulfurization system, an outlet of an electrolysis flue gas defluorination system 1 is communicated with a flue gas inlet 8 at the lower part of one side of a horizontal desulfurization reaction device 3, a flue gas outlet 10 at the top of the other side of the horizontal desulfurization reaction device 3 is communicated with a chimney 5 through a second pipeline 9, wherein the horizontal desulfurization reaction devices 3 are arranged in two rows, the chimney 5 is arranged between the two rows of horizontal desulfurization reaction devices 3, thus the floor space in the length direction can be reduced, a partition 16 is arranged in the inner cavity at the lower part of the chimney 5, a circulating slurry pool 6 is arranged below the partition 16, the circulating slurry pool 6 is arranged at the lower part of the chimney 5, the lower space of the chimney 5 is effectively utilized, and an inter-equipment, a distribution room and an automatic control room 4 are arranged below the horizontal desulfurization reaction device 3.
The number of the horizontal desulfurization reaction devices 3 in each row is 1-3, in this embodiment 1, and the flue gas inlet 8 of each horizontal desulfurization reaction device 3 is arranged at the lower part of one side end part. The bottom surface of the horizontal desulfurization reaction device 3 is rectangular, the height of the horizontal desulfurization reaction device 3 is 3-10m, the length and width of the bottom surface of the horizontal desulfurization reaction device 3 are 20m×4m, the height from the flue gas outlet 10 to the bottom surface is 6m, the floor area is 28m× m =728 square meters by adopting the embodiment, and the floor area is 21m×72m=1512 square meters by adopting the traditional limestone-gypsum method. A collision ejection device 11 is arranged above a flue gas inlet 8 in a cavity of the horizontal desulfurization reaction device 3, a spraying layer 12 is arranged in the middle of the cavity of the horizontal desulfurization reaction device 3 above the collision ejection device 11, and a dust removal demister 13 is arranged above the upper spraying layer 12 in the cavity of the horizontal desulfurization reaction device 3; the top surface of the side of the flue gas outlet 10 of the horizontal desulfurization reaction device 3 is higher than the top surface of the side of the flue gas inlet 8, the height of the collision ejection device 11 on the side of the flue gas inlet 8 is higher than the height of the side of the flue gas outlet 10, the collision ejection device 11 of the embodiment is a grating plate, the gap size of the grating plate gradually increases from the side of the flue gas inlet 8 to the side of the flue gas outlet 10, and the embodiment adopts the inclined arrangement of the grating plate, and the gap on the side of the flue gas inlet is small, so that the flue gas entering the horizontal desulfurization reaction device 3 moves upwards through the grating plate while continuing to move forwards along the grating plate, the lower part of the horizontal desulfurization reaction device 3 is partitioned into a rectangular trapezoid by the grating plate, and when the flue gas moves forwards, the space of the rectangular trapezoid is reduced, the cross section area of flow is larger after the flue gas enters the horizontal desulfurization reaction device 3, the flue gas flow velocity is low, the air flow distribution is more uniform, a large number of holes are formed in the grating plate, and the flue gas can directly pass through. Therefore, the flue gas resistance is small, and the grating plate plays a role in uniformly distributing air flow on one hand and plays a role in collision ejection on the other hand. The spraying causes a liquid film to form on the apertures when the grid is impacted. The liquid film can play a role in humidifying and pre-reacting the flue gas on one hand; on the other hand, the liquid drops of the spraying layer are sprayed on the liquid film, and the liquid film refines the liquid drops under the combined action of the sprayed slurry and the lower air flow, so that the reaction efficiency is improved. The top surface of the horizontal desulfurization reaction device 3 is an inclined surface, so that the resistance of the operation of the flue gas is reduced, and the flue gas moves to a flue gas outlet along the bottom of the top surface after moving to the bottom of the top surface. The spraying layer 12 is a layer, the spray heads of the spraying layer spray upwards and downwards in an umbrella shape respectively, and the bottom of one side of the flue gas outlet of the horizontal desulfurization reaction device 3 is provided with a liquid outlet 15 protruding downwards.
The chimney 5 of this embodiment is arranged between two horizontal desulfurization reaction devices 3, and the circulating slurry pond 6 in the lower part of the chimney 5 is connected to the spraying pipeline of each horizontal desulfurization reaction device 3 through the circulating slurry pump 14. The circulating slurry pump 14, the standby slurry tank, the oxidation wind system and the process water system are arranged in the equipment room, the standby slurry tank is also connected with the horizontal desulfurization reaction device 3 through the circulating slurry pump 14, the oxidation wind system is connected with the circulating slurry tank 6 and the standby slurry tank through pipelines, and the process water system supplies water to the system. The low-voltage power supply and distribution system is arranged in the power distribution room, the low-voltage power supply and distribution system provides power for the system, the automatic control system is arranged in the automatic control room, and the automatic control system is connected with the control equipment. The circulating slurry pump 14, the standby slurry tank, the oxidation wind system, the process water system, the low-voltage power supply and distribution system and the automatic control system are connected with the system by adopting the existing connecting structure, such as the connecting structure in the existing limestone-gypsum wet desulfurization system.
The outlet of the electrolytic flue gas defluorination system 1 is connected through two first pipelines 7, each first pipeline 7 is communicated with a flue gas inlet 8 at the lower part of one side of the horizontal desulfurization reaction device 3, and 2 fans are arranged on each first pipeline 7.
Example 2
The chimney 5 in the embodiment 1 is arranged at the outer side of one side of the smoke outlets of the two rows of horizontal desulfurization reaction devices 3, and the chimney 5 and the two smoke outlets 10 form an acute triangle; the flue gas inlet 8 of each horizontal desulfurization reaction device 3 is arranged at the lower part of one side surface. The height from the flue gas outlet to the bottom surface of the horizontal desulfurization reaction device 3 in the embodiment is 10m. Otherwise, the same as in example 1 was conducted.
Example 3
The height from the top surface to the bottom surface of the horizontal desulfurization device 3 in example 1 is 3m, the top surface of the horizontal desulfurization device 3 is horizontally arranged, the flue gas outlet 10 is arranged at the upper part of the side surface of the horizontal desulfurization device 3, and a standby spraying layer is arranged above the spraying layer. Otherwise, the same as in example 1 was conducted.
Example 4
As shown in fig. 6, the top surface of the horizontal desulfurization reaction device 3 is triangular with the flue gas outlet as the vertex, and the length from the flue gas outlet to the top surface on the side of the flue gas inlet in the length direction is longer than the length from the flue gas outlet to the top surface on the end part on the side of the flue gas outlet. Otherwise, the same as in example 1 was conducted.
Example 5
In the embodiment 1, the flue gas outlet is arranged in the middle of the top surface, the liquid outlet 15 is arranged in the middle of the horizontal desulfurization reaction device 3, the grating plates are obliquely arranged, and the height of the grating plates above the flue gas inlet is higher than that of the grating plates at other positions. Otherwise, the same as in example 1 was conducted.
Example 6
In the embodiment 1, 3 horizontal desulfurization reaction devices are arranged in each row, as shown in fig. 7, the 3 horizontal desulfurization reaction devices are arranged in parallel and overlapped on the vertical surface, a flue gas outlet is arranged at the upper part of the horizontal desulfurization reaction device, and a flue gas inlet is arranged at the lower part of the side surface of the horizontal desulfurization reaction device. Otherwise, the same as in example 1 was conducted.
The three horizontal desulfurization reaction devices 3 are overlapped in parallel on the vertical face, and the height of the horizontal desulfurization reaction devices is 30m at the maximum and is far smaller than that of the existing desulfurization tower.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (9)
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| CN202422322623.2U CN221889588U (en) | 2024-09-24 | 2024-09-24 | Configuration structure of horizontal desulfurization system for aluminum electrolysis flue gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120346654A (en) * | 2025-06-20 | 2025-07-22 | 沈阳铝镁设计研究院有限公司 | Horizontal wet flue gas desulfurization system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120346654A (en) * | 2025-06-20 | 2025-07-22 | 沈阳铝镁设计研究院有限公司 | Horizontal wet flue gas desulfurization system |
| CN120346654B (en) * | 2025-06-20 | 2025-10-31 | 沈阳铝镁设计研究院有限公司 | A horizontal wet flue gas desulfurization system |
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