CN219091613U

CN219091613U - Flue gas denitration and desulfurization device

Info

Publication number: CN219091613U
Application number: CN202223561380.5U
Authority: CN
Inventors: 钱黎明; 刘大雪; 陆晓飞; 袁良谋; 陈开荣
Original assignee: Anhui Guoke Environmental Protection Equipment Manufacturing Co ltd
Current assignee: Anhui Guoke Environmental Protection Equipment Manufacturing Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-30
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a flue gas denitration and desulfurization device, which relates to the technical field of waste gas treatment and comprises the following components: the utility model can effectively prolong the contact time and contact surface of flue gas, thereby improving the desulfurization and denitration effect.

Description

Flue gas denitration and desulfurization device

Technical Field

The utility model relates to the technical field of waste gas treatment, in particular to a flue gas denitration and desulfurization device.

Background

The flue gas is a mixture of gas and smoke dust, is a main cause for polluting the atmosphere of residential areas, contains a large amount of nitrogen oxides and sulfur oxides, and the flue gas desulfurization and denitrification technology is a boiler flue gas purification technology applied to the chemical industry for generating the multiple nitrogen oxides and the sulfur oxides, and is filtered by using a desulfurization and denitrification device to prevent the environment from being damaged.

The flue gas treatment sequence is generally denitration and then desulfurization, because the temperature required in the denitration process is higher, the flue gas is discharged firstly, the temperature required by denitration can be ensured through a denitration device, and desulfurization has no requirement on the flue gas temperature, so that desulfurization is put behind.

When the existing desulfurization and denitrification device is used for desulfurizing and denitrifying the flue gas, the contact range and time between the flue gas and the gas are limited due to the flowing of the flue gas, so that the desulfurization and denitrification effects are not good.

Disclosure of Invention

In order to solve the technical problems in the background technology, the utility model provides a flue gas denitration and desulfurization device.

A flue gas denitration and desulfurization device, comprising: the box is internally provided with a vertical partition board to separate a first chamber and a second chamber, two opposite side walls of the box are respectively provided with an air inlet and an air outlet, the air inlet is communicated with the first chamber, the air outlet is communicated with the second chamber, an air hole is formed in the partition board, the bottom of the first chamber is provided with a first liquid storage tank, the first liquid storage tank is connected with a spray pipe through a pipeline, a fan blade shaft which is horizontally arranged is rotationally arranged on the inner wall of one side of the first chamber, a plurality of fan blades are annularly arranged on the fan blade shaft, the fan blades are located above the first liquid storage tank and opposite to the air inlet, the bottom of the second chamber is provided with a second liquid storage tank, a hollow cylinder is rotationally arranged on the inner wall of the second chamber and is connected with the second liquid storage tank through a pipeline, a plurality of nozzles are uniformly formed in the cylinder body, a reciprocating screw rod is rotationally arranged on the inner wall of one side of the second chamber, a belt transmission is arranged between the reciprocating screw rod and the fan blade shaft, a movable seat is connected with the movable seat through a rack, and an external tooth ring which can be meshed with the rack is fixed on the outer side of the hollow cylinder.

As a further optimization of the scheme, the air holes are arranged at the top of the partition plate, the height of the air holes is higher than that of the air inlet and the air outlet, and the air holes are provided with one-way air flow valves.

As a further optimization of the scheme, the air inlet is provided with the guide pipe, the guide pipe is positioned between the air inlet and the fan blades, and the diameter of the guide pipe is gradually reduced along the air flowing direction.

As a further optimization of the scheme, the lowest point of the rotation position of the fan blade is located below the liquid level of the first liquid storage tank, and a water-absorbing cotton layer is arranged on the fan blade.

As a further optimization of the scheme, the axial direction of the fan blade is perpendicular to the axial direction of the air inlet, the reciprocating screw rod is parallel to the axial direction of the fan blade, and the axial direction of the reciprocating screw rod is perpendicular to the axial direction of the hollow cylinder.

As a further refinement of the above solution, the hollow cylinder is rotatably connected to the inner wall of the second chamber by means of a sealing bearing.

As a further optimization of the scheme, the first liquid storage tank is filled with ammonia water, and the second liquid storage tank is filled with lime water.

1. According to the flue gas denitration and desulfurization device provided by the utility model, the fan blades can be driven to rotate by the flue gas flowing, so that the flow speed of the flue gas is reduced, meanwhile, the flue gas can be primarily absorbed by the ammonia water on the fan blades, and the contact time and the contact area of the flue gas and the ammonia water are greatly prolonged by matching with the use of the spray pipe, so that the denitration effect is improved.

2. According to the flue gas denitration and desulfurization device provided by the utility model, when the fan blades rotate due to the flowing of flue gas, the reciprocating screw rod can be driven by the belt to rotate, then the movable seat is driven to move back and forth, the hollow cylinder is driven to rotate back and forth under the meshing of the rack and the outer toothed ring, then the multi-range spraying of lime water is realized, the contact area of the flue gas and the lime water is increased, and the desulfurization effect is improved.

Drawings

Fig. 1 is a schematic diagram of the internal structure of a flue gas denitration and desulfurization device provided by the utility model;

fig. 2 is a schematic plan view of a flue gas denitration and desulfurization device according to the present utility model;

fig. 3 is a schematic diagram of the back structure of a flue gas denitration and desulfurization device provided by the utility model.

Detailed Description

The flue gas denitration and desulfurization device provided in this embodiment, referring to fig. 1 to 3, includes: the box 1, the inside vertical baffle 2 that is equipped with of box 1 is in order to separate first cavity 101 and second cavity 102, be provided with air inlet 3 and gas vent 4 on two relative lateral walls of box 1 respectively, air inlet 3 intercommunication first cavity 101, gas vent 4 intercommunication second cavity 102, the gas pocket 201 has been seted up on the baffle 2, air pocket 201 locates baffle 2 top and air pocket 201 highly is higher than air inlet 3 and gas vent 4, be equipped with the check valve on the gas pocket 201 and make the flue gas only one-way from first cavity 101 to second cavity 102.

The bottom of the first chamber 101 is provided with a first liquid storage tank 5, ammonia water is contained in the first liquid storage tank 5, the first liquid storage tank 5 is connected with a spray pipe 6 through a pipeline, a horizontally arranged fan blade shaft 7 is rotatably arranged on the inner wall of one side of the first chamber 101, the fan blade shaft 7 is axially perpendicular to the air inlet 3, a plurality of fan blades 8 are annularly arranged on the fan blade shaft 7 in an array manner, the fan blades 8 are located above the first liquid storage tank 5 and opposite to the air inlet 3, the lowest point of the rotation position of the fan blades 8 is located below the liquid level of the first liquid storage tank 5, and a water-absorbing cotton layer is arranged on the fan blades 8.

When the flue gas enters the first cavity 101 from the air inlet 3 and blows to the fan blades 8, the flow speed of the flue gas is reduced by the fan blades 8, meanwhile, the flue gas can be primarily absorbed by ammonia water on the fan blades 8, and the contact time and the contact area of the flue gas and the ammonia water are greatly prolonged by the use of the matched spray pipe 6, so that the denitration effect is improved.

The air inlet 3 is also provided with the guide pipe 16, the guide pipe 16 is positioned between the air inlet 3 and the fan blades 8, the diameter of the guide pipe 16 is gradually reduced along the air flow direction, and the gradually reduced orifice can concentrate smoke at one position of the fan blades 8, so that the fan blades 8 are better blown to rotate.

The bottom of the second cavity 102 is provided with a second liquid storage tank 9, lime water is contained in the second liquid storage tank 9, a hollow cylinder 10 is rotatably installed on the inner wall of the second cavity 102 through a sealing bearing, the hollow cylinder 10 is transversely arranged and connected with the second liquid storage tank 9 through a pipeline, a plurality of nozzles 1001 are uniformly formed in the cylinder body, a reciprocating screw rod 11 is rotatably installed on the inner wall of one side of the second cavity 102, the reciprocating screw rod 11 is axially parallel to the fan blade shaft 7, the axial direction of the reciprocating screw rod 11 is perpendicular to the axial direction of the hollow cylinder 10, a movable seat 12 is screwed on the reciprocating screw rod 11, a rack 13 is installed on the movable seat 12, and an external tooth ring 14 which can be meshed with the rack 13 is fixed on the outer side of the hollow cylinder 10.

The belt 15 is arranged between the reciprocating screw rod 11 and the fan blade shaft 7 for transmission, when the fan blade shaft 7 rotates due to the fact that the fan blade 8 is blown by flue gas, the reciprocating screw rod 11 is driven to rotate through the belt 15, then the movable seat 12 is driven to move back and forth, the hollow cylinder 10 is driven to rotate back and forth under the meshing of the rack 13 and the outer toothed ring 14, multi-range spraying of lime water is achieved, the contact area of the flue gas and the lime water is increased, and the desulfurization effect is improved.

When the flue gas denitration and desulfurization device provided by the embodiment is used, flue gas is firstly blown to the fan blades 8 in the first cavity 101, a part of flue gas can be primarily absorbed by ammonia water on the fan blades 8, denitration operation is completed by matching with the use of the spray pipe 6, then the flue gas enters the second cavity 102 through the air holes 201, the fan blades 8 are blown to rotate when the flue gas flows, the reciprocating screw rod 11 is driven to rotate through the transmission of the belt 15, the movable seat 12 is driven to move back and forth, the hollow cylinder 10 is driven to rotate back and forth under the meshing of the rack 13 and the outer toothed ring 14, and limestone flowing into the hollow cylinder 10 through the pipe is rotated and sprayed along with the flue gas to complete desulfurization operation.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. A flue gas denitration and desulfurization device, comprising: the box body (1), box body (1) inside is equipped with vertical baffle (2) in order to separate first cavity (101) and second cavity (102), be provided with air inlet (3) and gas vent (4) respectively on two opposite lateral walls of box body (1), air inlet (3) intercommunication first cavity (101), gas vent (4) intercommunication second cavity (102), air vent (201) have been seted up on baffle (2), first cavity (101) bottom is equipped with first reservoir (5), first reservoir (5) have shower (6) through the pipe connection, fan blade axle (7) of horizontal arrangement are installed in rotation on one side inner wall of first cavity (101), a plurality of flabellum (8) have been arranged in annular array on fan blade axle (7), fan blade (8) are located first reservoir (5) top and are relative with air inlet (3), second cavity (102) bottom is equipped with second reservoir (9), hollow section of thick bamboo (10) are installed in rotation on the second cavity (102) inner wall, hollow section of thick bamboo (10) are horizontal arrangement and are equipped with second reservoir (9) through pipe connection, evenly be equipped with fan blade axle (1001) on one side of first cavity (102) and a plurality of screw rod (11) are equipped with reciprocal transmission belt between the screw rod (11), the reciprocating screw rod (11) is in threaded connection with a movable seat (12), a rack (13) is arranged on the movable seat (12), and an external tooth ring (14) which can be meshed with the rack (13) is fixed on the outer side of the hollow cylinder (10).

2. The flue gas denitration and desulfurization device according to claim 1, wherein the air hole (201) is arranged at the top of the partition plate (2), the height of the air hole (201) is higher than that of the air inlet (3) and the air outlet (4), and a one-way air flow valve is arranged on the air hole (201).

3. The flue gas denitration and desulfurization device according to claim 1, wherein a flow guide pipe (16) is arranged at the air inlet (3), the flow guide pipe (16) is positioned between the air inlet (3) and the fan blades (8), and the diameter of the flow guide pipe (16) is gradually reduced along the flow direction of the gas.

4. The flue gas denitration and desulfurization device according to claim 1, wherein the lowest point of the rotation position of the fan blade (8) is positioned below the liquid level of the first liquid storage tank (5), and a water-absorbing cotton layer is arranged on the fan blade (8).

5. The flue gas denitration and desulfurization device according to claim 1, wherein the axial direction of the fan blade shaft (7) is perpendicular to the axial direction of the air inlet (3), the reciprocating screw rod (11) is axially parallel to the axial direction of the fan blade shaft (7), and the axial direction of the reciprocating screw rod (11) is perpendicular to the axial direction of the hollow cylinder (10).

6. The flue gas denitration and desulfurization device according to claim 1, wherein the hollow cylinder (10) is rotatably connected with the inner wall of the second chamber (102) through a sealed bearing.

7. The flue gas denitration and desulfurization device according to claim 1, wherein the first liquid storage tank (5) is internally provided with ammonia water, and the second liquid storage tank (9) is internally provided with lime water.