A wet flue gas desulfurization tower

Abstract

The utility model relates to desulfurizing tower technical field discloses a kind of wet flue gas desulfurization tower, including tower body, desulfurization component and be used for the spray of the spray component to desulfurization component, tower body is equipped with air inlet and air outlet, desulfurization component is arranged in tower body, desulfurization component includes sieve plate and multiple baffle, the outer periphery of sieve plate is connected with the inner wall of tower body, multiple baffle is spacedly installed at the top of sieve plate, form pass-through smoke channel between adjacent two baffle, baffle is corrugated plate, two side walls of pass-through smoke channel respectively are equipped with a group of baffle, two groups of baffle in pass-through smoke channel are staggered arrangement in the direction of smoke flow, pass-through smoke channel is filled with filler;The utility model cooperates through serpentine pass-through smoke channel and baffle, reduce the flow speed of flue gas and treatment solution, prolong residence time, to improve the reaction length of flue gas and treatment solution, improve desulfurization efficiency.

Description

Technical Field

[0001] This utility model relates to the field of desulfurization tower technology, and in particular to a wet flue gas desulfurization tower. Background Technology

[0002] A wet flue gas desulfurization (FGD) tower is a device used to remove sulfides from combustion exhaust gases. It purifies the flue gas by absorbing the sulfides and converting them into harmless sulfates or other compounds. Wet FGD towers are widely used in industrial sectors such as thermal power plants to control flue gas pollution. Power plants use wet FGD towers to reduce sulfur dioxide emissions, thereby meeting environmental standards.

[0003] Existing desulfurization towers spray treatment solution through a spraying mechanism. After the flue gas enters the desulfurization tower, it reacts with the treatment solution to achieve desulfurization. However, if the flue gas rises too fast, it will result in insufficient contact time with the solution. Some sulfur dioxide will not be fully dissolved or participate in the reaction and will escape with the airflow, leading to a decrease in desulfurization efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a wet flue gas desulfurization tower that, through the synergistic effect of a serpentine flue gas passage and baffles, reduces the flow velocity of flue gas and treatment solution, extends the residence time, thereby increasing the reaction time between flue gas and treatment solution and improving desulfurization efficiency.

[0005] To achieve the above objectives, this utility model provides a wet flue gas desulfurization tower, including a tower body, a desulfurization component, and a spray component for spraying the solution. The tower body has an air inlet and an air outlet. The desulfurization component is disposed in the tower body and includes a perforated plate and multiple baffles. The outer periphery of the perforated plate is connected to the inner wall of the tower body. The multiple baffles are installed at equal intervals on the top of the perforated plate, and a flue gas passage is formed between two adjacent baffles. The baffles are corrugated plates. A set of baffles is provided on each of the two side walls of the flue gas passage. The two sets of baffles in the flue gas passage are staggered in the flue gas flow direction. The flue gas passage is filled with packing material.

[0006] As a preferred embodiment of this utility model, both sets of baffles in the smoke passage are inclined, and the inclination directions of the two sets of baffles in the smoke passage are opposite.

[0007] As a preferred embodiment of this utility model, the tower body is provided with two sets of desulfurization components arranged vertically.

[0008] As a preferred embodiment of this utility model, the spraying assembly includes a delivery pump, an input pipe, an output pipe, and two spray elements. The bottom of the tower body is provided with a base, the delivery pump is mounted on the base, the input pipe is connected to the input end of the delivery pump and extends into the bottom of the inner cavity of the tower body, the output pipe is connected to the output end of the delivery pump, and the spray elements are connected to the output pipe. The two spray elements correspond one-to-one with the two sets of desulfurization assemblies, and the spray elements are located above the desulfurization assemblies.

[0009] As a preferred embodiment of this utility model, the spraying component includes a main spray pipe connected to the output pipe and a plurality of auxiliary spray pipes symmetrically installed on both sides of the main spray pipe. The bottom of the main spray pipe and the bottom of the auxiliary spray pipes are provided with a plurality of nozzles.

[0010] As a preferred embodiment of this utility model, two inspection windows are provided on the outer wall of the tower body, and the two inspection windows are arranged one-to-one with the two desulfurization components, with the inspection windows facing the desulfurization components.

[0011] As a preferred embodiment of this utility model, the baffle is disposed at the protrusion of the partition.

[0012] As a preferred embodiment of this utility model, a dehydrator is provided at the top of the tower body.

[0013] As a preferred embodiment of this utility model, a filter screen is provided at the lower part of the tower body, and the filter screen is located below the desulfurization component.

[0014] As a preferred embodiment of this utility model, the air inlet is located on the lower part of the outer side wall of the tower body and below the desulfurization component, and the air outlet is located on the top surface of the tower body.

[0015] Compared with the prior art, the wet flue gas desulfurization tower of this utility model has the following advantages:

[0016] In this invention, the flue gas to be treated enters the tower body through the inlet. When the flue gas enters the desulfurization mechanism, it is confined within a serpentine flue gas passage formed by corrugated baffles. The flue gas must rise along an "S"-shaped path, extending its movement path. Furthermore, the flue gas passage is equipped with two sets of staggered baffles, forcing the flue gas to turn multiple times, reducing its flow velocity and extending its residence time. At the same time, the packing material in the flue gas passage effectively increases the contact area between the flue gas and the treatment solution, improving the reaction time between the flue gas and the treatment solution and thus enhancing the desulfurization efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0018] Figure 1 This utility model provides a structural schematic diagram of a wet flue gas desulfurization tower.

[0019] Figure 2 A schematic diagram of the internal structure of a wet flue gas desulfurization tower provided by this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the desulfurization component provided by this utility model;

[0021] Figure 4 A schematic diagram of the structure of the smoke passage provided by this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the spray assembly provided by this utility model;

[0023] In the diagram, 1 is the tower body; 11 is the air inlet; 12 is the air outlet; 13 is the base; 14 is the dehydrator; 15 is the inspection port; 16 is the filter screen; 2 is the desulfurization component; 21 is the perforated plate; 22 is the baffle plate; 23 is the flue gas passage; 24 is the baffle plate; 3 is the spray assembly; 31 is the conveying pump; 32 is the input pipe; 33 is the output pipe; 34 is the spray component; 341 is the main spray pipe; 342 is the auxiliary spray pipe; and 343 is the nozzle. Detailed Implementation

[0024] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] like Figures 1 to 5As shown, a preferred embodiment of the present invention provides a wet flue gas desulfurization tower, comprising a tower body 1, a desulfurization component 2, and a spray component 3 for spraying the solution. The tower body 1 has an air inlet 11 and an air outlet 12. The desulfurization component 2 is disposed inside the tower body 1. The desulfurization component 2 includes a perforated plate 21 and multiple baffles 22. The outer periphery of the perforated plate 21 is connected to the inner wall of the tower body 1. The multiple baffles 22 are installed at equal intervals on the top of the perforated plate 21. A flue gas passage 23 is formed between two adjacent baffles 22. The baffles 22 are corrugated plates. A set of baffles 24 is provided on each of the two side walls of the flue gas passage 23. The two sets of baffles 24 in the flue gas passage 23 are staggered in the flue gas flow direction. The flue gas passage 23 is filled with packing material, preferably granular packing material. In this embodiment, the air inlet 11 is located on the lower part of the outer side wall of the tower body 1 and below the desulfurization component 2, and the air outlet 12 is located on the top surface of the tower body 1.

[0027] In this invention, the flue gas to be treated enters the tower body 1 through the inlet 11. When the flue gas enters the desulfurization mechanism, it is confined within the serpentine flue gas passage 23 formed by the corrugated baffles 22. The flue gas must rise along an "S"-shaped path, extending the movement path of the flue gas and the treatment solution. Moreover, the flue gas passage 23 is equipped with two sets of staggered baffles 24, which force the flue gas and the treatment solution to turn multiple times, reducing the flow rate and extending the residence time. At the same time, the packing in the flue gas passage 23 effectively increases the contact area between the flue gas and the treatment solution. The treated flue gas is discharged from the tower body 1 through the outlet 12, which can improve the reaction time between the flue gas and the treatment solution and improve the desulfurization efficiency.

[0028] like Figure 4 As shown, to further reduce the flow velocity of flue gas and prolong its residence time within the flue gas passage 23, both sets of baffles 24 within the flue gas passage 23 are inclined, with the two sets of baffles 24 inclined in opposite directions. Furthermore, the baffles 24 are positioned at the protrusions of the partition 22, effectively increasing the flow path of the flue gas and the treatment solution.

[0029] In this embodiment, the tower body 1 is equipped with two sets of desulfurization components 2 arranged vertically to ensure that the flue gas can fully react with the treatment solution.

[0030] For example, such as Figure 5As shown, the spray assembly 3 includes a delivery pump 31, an input pipe 32, an output pipe 33, and two spray elements 34. The bottom of the tower body 1 is provided with a base 13, and the delivery pump 31 is installed on the base 13. The input pipe 32 is connected to the input end of the delivery pump 31 and extends into the bottom of the inner cavity of the tower body 1. The output pipe 33 is connected to the output end of the delivery pump 31. The spray elements 34 are connected to the output pipe 33. The two spray elements 34 correspond one-to-one with the two sets of desulfurization assemblies 2. The spray elements 34 are located above the desulfurization assemblies 2. The bottom of the tower body 1 is pre-filled with a treatment solution. The treatment solution is delivered to the spray elements 34 by the delivery pump 31 to spray the desulfurization assemblies 2. After the treatment solution reacts with the flue gas, it flows back to the bottom of the tower body 1 under the action of gravity, realizing the recycling of the treatment solution.

[0031] Specifically, such as Figure 5 As shown, the spraying component 34 includes a main spray pipe 341 connected to the output pipe 33 and a plurality of auxiliary spray pipes 342 symmetrically installed on both sides of the main spray pipe 341. The bottom of the main spray pipe 341 and the bottom of the auxiliary spray pipes 342 are provided with a plurality of nozzles 343, which can make the treatment solution spray the desulfurization component 2 evenly and fully, avoid spray dead corners, and ensure that the flue gas effectively and fully contacts and reacts with the treatment solution.

[0032] For example, such as Figure 2 As shown, two inspection windows are provided on the outer side wall of the tower body 1. The two inspection windows are arranged one-to-one with the two desulfurization components 2. The inspection windows face the desulfurization components 2, which facilitates the staff to carry out regular maintenance on the desulfurization components 2.

[0033] Specifically, such as Figure 2 As shown, the top of the tower body 1 is equipped with a dehydrator 14 to remove moisture from the flue gas and ensure that the flue gas discharged from the outlet 12 is safe.

[0034] For example, such as Figure 2 As shown, a filter screen 16 is provided at the lower part of the tower body 1. The filter screen 16 is located below the desulfurization component 2. The treatment solution after reacting with the flue gas is filtered by the filter screen 16 and then returned to the bottom of the tower body 1, effectively intercepting and separating impurities.

[0035] The entire working process is as follows: the sulfur-containing flue gas generated by combustion enters the bottom of the tower body 1 through the air inlet 11. The flue gas flows from bottom to top in the tower body 1. The transfer pump 31 pumps the treatment solution from the bottom of the tower and delivers it to the spray unit 34 through the output pipe 33 for spraying. The flue gas and the treatment solution react fully in the desulfurization component 2. The treated flue gas first passes through the dehydrator 14 to remove the water and droplets entrained in the flue gas to prevent water from being discharged with the purified gas. The dehydrated purified gas is discharged outside the tower body 1 through the air outlet 12, completing the entire desulfurization process. The used treatment solution is filtered through the filter screen 16 to remove impurities and then returned to the bottom of the tower body 1 for continued recycling, maintaining the stable operation of the system.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A wet flue gas desulfurization tower characterized by, The system includes a tower body, a desulfurization assembly, and a spray assembly for spraying the solution. The tower body has an air inlet and an air outlet. The desulfurization assembly is disposed within the tower body and includes a perforated plate and multiple baffles. The outer periphery of the perforated plate is connected to the inner wall of the tower body. The multiple baffles are installed at equal intervals on the top of the perforated plate, and a flue gas passage is formed between two adjacent baffles. The baffles are corrugated plates. A set of baffles is provided on each of the two side walls of the flue gas passage. The two sets of baffles in the flue gas passage are staggered in the direction of flue gas flow. The flue gas passage is filled with packing material.

2. The wet flue gas desulfurization tower of claim 1, wherein, Both sets of baffles in the smoke passage are inclined, and the two sets of baffles in the smoke passage are inclined in opposite directions.

3. The wet flue gas desulfurization tower of claim 1, wherein, The tower body is equipped with two sets of desulfurization components arranged vertically.

4. The wet flue gas desulfurization tower of claim 3, wherein, The spray assembly includes a delivery pump, an input pipe, an output pipe, and two spray elements. The bottom of the tower body is provided with a base, the delivery pump is mounted on the base, the input pipe is connected to the input end of the delivery pump and extends into the bottom of the inner cavity of the tower body, the output pipe is connected to the output end of the delivery pump, and the spray elements are connected to the output pipe. The two spray elements correspond one-to-one with the two sets of desulfurization assemblies, and the spray elements are located above the desulfurization assemblies.

5. The wet flue gas desulfurization tower of claim 4, wherein, The spray system includes a main spray pipe connected to the output pipe and multiple auxiliary spray pipes symmetrically installed on both sides of the main spray pipe. The bottom of the main spray pipe and the bottom of the auxiliary spray pipes are each provided with multiple nozzles.

6. The wet flue gas desulfurization tower of claim 3, wherein Two inspection windows are provided on the outer wall of the tower body. The two inspection windows are arranged one-to-one with the two desulfurization components, and the inspection windows face the desulfurization components.

7. The wet flue gas desulfurization tower of claim 1, wherein The baffle is disposed at the protrusion of the partition.

8. The wet flue gas desulfurization tower of claim 1, wherein, A dehydrator is installed at the top of the tower.

9. The wet flue gas desulfurization tower of claim 1, wherein, The lower part of the tower body is equipped with a filter screen, which is located below the desulfurization component.

10. The wet flue gas desulfurization tower of claim 1, wherein, The air inlet is located on the lower part of the outer wall of the tower body and below the desulfurization component, and the air outlet is located on the top surface of the tower body.

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