Efficient composite desulfurization device

Abstract

The utility model discloses an efficient compound desulfurization device, which belongs to the technical field of flue gas desulfurization and comprises a desulfurization tower body, a flue gas input pipeline, a blow-off pipeline and a liquid injection pipe are mounted on the outer surface of the desulfurization tower body in a penetrating manner, plugs are arranged on the blow-off pipeline and the liquid injection pipe, a slurry pump is fixed on the outer surface of the desulfurization tower body, and the slurry pump is communicated with the flue gas input pipeline. A water outlet of the slurry pump is communicated with a communicating pipe; the drying agent screen plate is arranged to be matched with the demisting plate for use, gas neutralized by alkaline slurry and sulfur-containing flue gas can pass through the demisting plate and the drying agent screen plate when being discharged, then wet mist and moisture in the gas can be effectively removed through the demisting plate and the drying agent screen plate, and it is guaranteed that the dryness of discharged gas is good; and an upper treatment barrel and a lower treatment barrel are matched with a rotating ring, a fixed ring, an outer barrel and an inner rod for use, so that a drying agent net plate is convenient to disassemble, assemble, clean and replace.

Description

Technical Field

[0001] The utility model belongs to the technical field of flue gas desulfurization, and particularly relates to an efficient composite desulfurization device. Background Art

[0002] With the development of the modern industrial level, sulfur-containing flue gas will be generated during the combustion of mineral coal. The treatment of flue gas is an important means to prevent acid rain, and the desulfurization treatment of flue gas is becoming more and more mature. Most of them use alkaline slurry to carry out a neutralization reaction with the sulfur components in the sulfur-containing flue gas.

[0003] During the composite desulfurization operation, after the flue gas is transported to the inside of the desulfurization tower for operation and treatment, it is directly discharged. However, after the gas and the slurry are treated and neutralized, the humidity of the gas is relatively high. Direct discharge will cause a relatively high humidity of the fog, and the particulate matter attached to the dust-containing flue gas will enter the slurry. When the slurry pump repeats the extraction, the particulate matter will be directly extracted. When there is more particulate matter, it will affect the normal slurry transportation. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an efficient composite desulfurization device to solve the problems proposed in the above background art, that is, after the gas and the slurry are treated and neutralized, the humidity of the gas is relatively high. Direct discharge will cause a relatively high humidity of the fog, and the particulate matter attached to the dust-containing flue gas will enter the slurry. When the slurry pump repeats the extraction, the particulate matter will be directly extracted. When there is more particulate matter, it will affect the normal slurry transportation.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: An efficient composite desulfurization device includes a desulfurization tower body. A flue gas input pipe, a sewage discharge pipe and a liquid injection pipe are installed through the outer surface of the desulfurization tower body. Plug heads are arranged on both the sewage discharge pipe and the liquid injection pipe. A slurry pump is fixed on the outer surface of the desulfurization tower body. The water outlet of the slurry pump is connected and installed with a connecting pipe. The connecting pipe penetrates and extends into the inside of the desulfurization tower body and is connected with a plurality of liquid distributors arranged inside the desulfurization tower body. The liquid distributor includes a main liquid distribution pipe installed on the inner wall of the desulfurization tower body, a plurality of secondary liquid distribution pipes installed on the main liquid distribution pipe, and liquid distribution nozzles installed on the lower surface of the secondary liquid distribution pipes. An upper treatment cylinder is installed on the upper surface of the desulfurization tower body. An upper treatment cylinder is movably arranged at the top end of the lower treatment cylinder. A flue gas output pipe is installed on the upper surface of the upper treatment cylinder. A desiccant mesh plate is arranged between the lower treatment cylinder and the upper treatment cylinder. The water inlet of the slurry pump is connected and installed with an upper connecting cylinder. The lower surface of the upper connecting cylinder is detachably installed with a lower connecting cylinder. A filter screen is arranged inside the upper connecting cylinder and the lower connecting cylinder. A connecting pipe is installed on the lower surface of the lower connecting cylinder and the connecting pipe is connected with the desulfurization tower body.

[0006] With the above solution, by setting up a desiccant mesh plate to be used in conjunction with a demisting plate, when the gas after the neutralization of the alkaline slurry and the sulfur-containing flue gas is discharged, it will pass through the demisting plate and the desiccant mesh plate. Thus, the demisting plate and the desiccant mesh plate can be used to effectively remove the moist fog and moisture in the gas, ensuring good dryness of the discharged gas, avoiding the phenomenon of excessive environmental humidity caused by direct discharge after neutralization. Moreover, the upper treatment cylinder and the lower treatment cylinder are used in conjunction with the rotating ring, the fixed ring, the outer cylinder and the inner rod, which facilitates the disassembly, cleaning and replacement of the desiccant mesh plate. By setting up the lower connecting cylinder and the upper connecting cylinder to be used in conjunction with the filter screen, the filter screen can filter the slurry pumped by the slurry pump, preventing the particulate matter mixed in the slurry from being pumped, achieving a good filtering effect, and the filter screen is convenient for replacement operation, improving the functional diversity.

[0007] In the above solution, it should be noted that the slurry pump is electrically connected to an external power source.

[0008] As a preferred embodiment, a demisting plate and a flow guide cover are installed on the inner wall of the desulfurization tower body, and the demisting plate and the flow guide cover are respectively located on the upper and lower sides of the liquid distributor.

[0009] With the above solution, the demisting plate can be used to demist the gas after neutralization, effectively reducing the moisture and fog in the gas, and the flow guide cover facilitates the diversion of the liquid after neutralization.

[0010] As a preferred embodiment, a fixed ring is fixed on the inner wall of the lower treatment cylinder, several inner rods are installed on the upper surface of the fixed ring, the desiccant mesh plate is slidably installed on the outer surface of the inner rods, a rotating ring is rotatably installed on the inner wall of the upper treatment cylinder, several outer cylinders are fixed on the lower surface of the rotating ring, the top ends of the inner rods extend into the outer cylinders, and the bottom ends of the outer cylinders are in contact with the upper surface of the desiccant mesh plate.

[0011] With the above solution, the fixed ring is used to support the desiccant mesh plate, and by using the rotation in conjunction with the outer cylinder and the inner rod, the desiccant mesh plate can be supported and limited, ensuring the stability of the desiccant mesh plate.

[0012] As a preferred embodiment, mounting rings are fixed on the outer surfaces of both the upper connecting cylinder and the lower connecting cylinder, and several mounting bolts are threadedly installed between the two mounting rings.

[0013] With the above solution, by using the mounting ring in conjunction with the mounting bolts, it is convenient to assemble the upper connecting cylinder and the lower connecting cylinder, and thus it is convenient for replacement and cleaning.

[0014] As a preferred embodiment, several limit insertion blocks are fixedly installed on the outer surface of the filter screen, and several limit slots are opened on the upper surface of the lower connecting cylinder and the lower surface of the upper connecting cylinder.

[0015] With the above solution, the limiting insertion block and the limiting slot are used in cooperation to limit the filter screen and prevent the filter screen from shaking.

[0016] As a preferred embodiment, the lower surface of the upper processing cylinder has a protruding portion, and the outer surface of the protruding portion has an external thread. The inner wall of the lower processing cylinder has an internal thread, and the internal thread and the external thread are used in cooperation.

[0017] With the above solution, the external thread and the internal thread are used in cooperation, which is convenient for the assembly of the upper processing cylinder and the lower processing cylinder, and further convenient for replacing the desiccant mesh plate.

[0018] Compared with the prior art, the beneficial effects of the present utility model are:

[0019] In the high-efficiency composite desulfurization device, by arranging the desiccant mesh plate and the demisting plate to be used in cooperation, when the gas after the neutralization of the alkaline slurry and the sulfur-containing flue gas is discharged, it will pass through the demisting plate and the desiccant mesh plate. Furthermore, the demisting plate and the desiccant mesh plate can be used to effectively remove the wet mist and moisture in the gas, ensure good dryness of the discharged gas, avoid the phenomenon of excessive environmental humidity caused by direct discharge after neutralization, and the upper processing cylinder and the lower processing cylinder cooperate with the rotating ring, the fixed ring, the outer cylinder and the inner rod to facilitate the disassembly, cleaning and replacement of the desiccant mesh plate;

[0020] In the high-efficiency composite desulfurization device, by arranging the lower connecting cylinder and the upper connecting cylinder to cooperate with the filter screen, the filter screen can filter the slurry pumped by the slurry pump, prevent the particulate matter mixed in the slurry from being pumped, and achieve a good filtering effect. Moreover, the filter screen is convenient for replacement operation, improving the functional diversity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present utility model;

[0022] Figure 2 is a schematic sectional structural diagram of the present utility model;

[0023] Figure 3 is a schematic structural diagram of the liquid distributor of the present utility model;

[0024] Figure 4 is a schematic sectional structural diagram of the upper connecting cylinder of the present utility model;

[0025] Figure 5 is a schematic sectional structural diagram of the lower processing cylinder of the present utility model;

[0026] Figure 6 is a schematic structural diagram of the upper connecting cylinder, the filter screen and the upper connecting cylinder of the present utility model.

[0027] In the figure: 1, desulfurization tower body; 2, flue gas input pipeline; 3, sewage discharge pipeline; 4, slurry pump; 5, connecting pipe; 6, liquid distributor; 7, main liquid distribution pipe; 8, auxiliary liquid distribution pipe; 9, liquid distribution nozzle; 10, demister plate; 11, lower treatment cylinder; 12, upper treatment cylinder; 13, flue gas output pipeline; 14, rotating ring; 15, outer cylinder; 16, fixed ring; 17, inner rod; 18, desiccant mesh plate; 19, upper connecting cylinder; 20, lower connecting cylinder; 21, connecting pipe; 22, mounting ring; 23, mounting bolt; 24, filter screen; 25, limit insertion block; 26, flow guide cover; 27, liquid injection pipe. Specific implementation mode

[0028] Please refer to Figure 1-6 , the present utility model provides an efficient composite desulfurization device, including a desulfurization tower body 1. A flue gas input pipeline 2, a sewage discharge pipeline 3 and a liquid injection pipe 27 are installed through the outer surface of the desulfurization tower body 1. Plug heads are arranged on both the sewage discharge pipeline 3 and the liquid injection pipe 27. A slurry pump 4 is fixed on the outer surface of the desulfurization tower body 1. The water outlet of the slurry pump 4 is connected and installed with a connecting pipe 5. The connecting pipe 5 penetrates and extends into the desulfurization tower body 1 and is connected with a plurality of liquid distributors 6 arranged inside the desulfurization tower body 1. The liquid distributor 6 includes a main liquid distribution pipe 7 installed on the inner wall of the desulfurization tower body 1, a plurality of auxiliary liquid distribution pipes 8 installed on the main liquid distribution pipe 7, and liquid distribution nozzles 9 installed on the lower surface of the auxiliary liquid distribution pipes 8. A lower treatment cylinder 11 is installed on the upper surface of the desulfurization tower body 1. An upper treatment cylinder 12 is movably arranged at the top of the lower treatment cylinder 11. A flue gas output pipeline 13 is installed on the upper surface of the upper treatment cylinder 12. A desiccant mesh plate 18 is arranged between the lower treatment cylinder 11 and the upper treatment cylinder 12. The water inlet of the slurry pump 4 is connected and installed with an upper connecting cylinder 19. The lower surface of the upper connecting cylinder 19 is detachably installed with a lower connecting cylinder 20. A filter screen 24 is arranged inside the upper connecting cylinder 19 and the lower connecting cylinder 20. A connecting pipe 21 is installed on the lower surface of the lower connecting cylinder 20 and the connecting pipe 21 is connected with the desulfurization tower body 1.

[0029] A demister plate 10 and a flow guide cover 26 are installed on the inner wall of the desulfurization tower body 1. The demister plate 10 and the flow guide cover 26 are respectively located on the upper and lower sides of the liquid distributor 6. The demister plate 10 can be used to remove the mist of the neutralized gas, effectively reducing the moisture mist of the gas. The flow guide cover 26 is convenient for guiding the neutralized liquid.

[0030] A fixing ring 16 is fixed to the inner wall of the lower processing cylinder 11. A plurality of inner rods 17 are installed on the upper surface of the fixing ring 16. The desiccant mesh plate 18 is slidably installed on the outer surface of the inner rods 17. A rotating ring 14 is rotatably installed on the inner wall of the upper processing cylinder 12. A plurality of outer cylinders 15 are fixed to the lower surface of the rotating ring 14. The top ends of the inner rods 17 extend into the outer cylinders 15. The bottom ends of the outer cylinders 15 are in contact with the upper surface of the desiccant mesh plate 18. The fixing ring 16 is used to support the desiccant mesh plate 18. After rotation and in cooperation with the outer cylinders 15 and the inner rods 17, the desiccant mesh plate 18 can be supported and limited, ensuring the stability of the desiccant mesh plate 18.

[0031] Mounting rings 22 are fixed to the outer surfaces of both the upper connecting cylinder 19 and the lower connecting cylinder 20. A plurality of mounting bolts 23 are threadedly installed between the two mounting rings 22. By using the mounting rings 22 in cooperation with the mounting bolts 23, it is convenient to assemble the upper connecting cylinder 19 and the lower connecting cylinder 20, and thus it is convenient to replace and clean.

[0032] A plurality of limiting insertion blocks 25 are fixedly installed on the outer surface of the filter screen 24. A plurality of limiting slots are provided on the upper surface of the lower connecting cylinder 20 and the lower surface of the upper connecting cylinder 19. By using the limiting insertion blocks 25 in cooperation with the limiting slots, the filter screen 24 can be limited to prevent the filter screen 24 from shaking.

[0033] The lower surface of the upper processing cylinder 12 has a protruding portion and the outer surface of the protruding portion has an external thread. The inner wall of the lower processing cylinder 11 has an internal thread and the internal thread and the external thread are used in cooperation. By using the external thread in cooperation with the internal thread, it is convenient to assemble the upper processing cylinder 12 and the lower processing cylinder 11, and thus it is convenient to replace the desiccant mesh plate 18.

[0034] During use, the sulfur-containing flue gas is transported through the flue gas input pipeline 2 to the inside of the desulfurization tower body 1. The gas is transported from bottom to top. The slurry pump 4 is started, and after being filtered by the filter screen 24, the alkaline slurry is transported to the liquid distributor 6. After passing through the main liquid distribution pipe 7 and the secondary liquid distribution pipe 8, it is sprayed out from the liquid distribution nozzles 9. The alkaline slurry is transported from top to bottom. After the gas contacts the alkaline slurry, a neutralization reaction occurs to achieve the desulfurization purpose. The desulfurized liquid flows back and is repeatedly pumped for use. The gas is discharged after passing through the demisting plate 10 and the desiccant mesh plate 18 from above. The demisting plate 10 and the desiccant mesh plate 18 can dehumidify the wet gas. When it is necessary to replace the desiccant mesh plate 18, turn the upper connecting cylinder 19 and remove it. When the upper connecting cylinder 19 moves upward, it drives the rotating ring 14 and the outer cylinders 15 to move synchronously. When the outer cylinders 15 are separated from the inner rods 17, the desiccant mesh plate 18 can be removed. When installing the desiccant mesh plate 18, insert the desiccant mesh plate 18 facing the inner rods 17. After insertion, turn the upper connecting cylinder 19 to fix it. When it is necessary to replace the filter screen 24, unscrew the mounting bolts 23 to disassemble the lower connecting cylinder 20 and the upper connecting cylinder 19, remove the filter screen 24 for replacement, and that's it.

Claims

1. A high-efficiency composite desulfurization device, characterized in that: The invention comprises a desulfurization tower body (1), wherein a flue gas input pipe (2), a sewage pipe (3) and a liquid injection pipe (27) are installed through the outer surface of the desulfurization tower body (1), and plugs are provided on the sewage pipe (3) and the liquid injection pipe (27). A slurry pump (4) is fixed on the outer surface of the desulfurization tower body (1), and a connecting pipe (5) is installed in communication with the water outlet of the slurry pump (4). The connecting pipe (5) extends through the interior of the desulfurization tower body (1) and is connected to a plurality of liquid distributors (6) provided inside the desulfurization tower body (1), and the liquid distributors (6) comprise a main liquid distributor pipe (7) installed on the inner wall of the desulfurization tower body (1), a plurality of auxiliary liquid distributor pipes (8) installed on the main liquid distributor pipe (7), and liquid distributors (6) installed on the lower surface of the auxiliary liquid distributor pipes (8). A nozzle (9) is provided, a lower treatment tube (11) is installed on the upper surface of the desulfurization tower body (1), an upper treatment tube (12) is movably provided at the top of the lower treatment tube (11), a flue gas output pipe (13) is installed on the upper surface of the upper treatment tube (12), a desiccant mesh plate (18) is provided between the lower treatment tube (11) and the upper treatment tube (12), an upper connecting tube (19) is installed in communication with the water inlet of the slurry pump (4), a lower connecting tube (20) is detachably installed on the lower surface of the upper connecting tube (19), a filter screen (24) is provided in the upper connecting tube (19) and the lower connecting tube (20), a connecting pipe (21) is installed on the lower surface of the lower connecting tube (20), and the connecting pipe (21) is connected to the desulfurization tower body (1).

2. The high-efficiency composite desulfurization device according to claim 1 is characterized in that: The inner wall of the desulfurization tower body (1) is provided with a demister plate (10) and a flow guide cover (26), and the demister plate (10) and the flow guide cover (26) are respectively located on the upper and lower sides of the liquid distributor (6).

3. The high-efficiency composite desulfurization device according to claim 1 is characterized in that: A fixing ring (16) is fixed on the inner wall of the lower treatment cylinder (11), a plurality of inner rods (17) are mounted on the upper surface of the fixing ring (16), and the desiccant mesh plate (18) is slidably mounted on the outer surface of the inner rods (17). A rotating ring (14) is rotatably mounted on the inner wall of the upper treatment cylinder (12), a plurality of outer cylinders (15) are fixed on the lower surface of the rotating ring (14), the top end of the inner rod (17) extends into the outer cylinder (15), and the bottom end of the outer cylinder (15) is in contact with the upper surface of the desiccant mesh plate (18).

4. The high-efficiency composite desulfurization device according to claim 1 is characterized in that: The outer surface of the upper connecting tube (19) and the outer surface of the lower connecting tube (20) are both fixed with mounting rings (22), and a plurality of mounting bolts (23) are threadedly mounted between the two mounting rings (22).

5. The high-efficiency composite desulfurization device according to claim 1 is characterized in that: A plurality of limiting inserts (25) are fixedly mounted on the outer surface of the filter screen (24), and a plurality of limiting slots are provided on the upper surface of the lower connecting tube (20) and the lower surface of the upper connecting tube (19).

6. The high-efficiency composite desulfurization device according to claim 1 is characterized in that: The lower surface of the upper processing cylinder (12) has a protrusion, and the outer surface of the protrusion has an external thread. The inner wall of the lower processing cylinder (11) has an internal thread, and the internal thread and the external thread are used in combination.

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