Flue gas emission recycling device

By designing a flue gas emission and recycling device, the initial heating of the flue gas pushes the piston into the return air pipe, realizes the secondary utilization of the flue gas heat, and filters and cleans the smoke through the filter and screw, the problems of low heat utilization rate of flue gas and smoke deposition in the prior art are solved, and the heat recovery efficiency and the smoothness of the pipeline are improved.

CN222865659UActive Publication Date: 2025-05-13YEKALON JIUFANGYUAN HUBEI FLOOR PANELS
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Patent Information

Application Number
CN202421474940.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-26
Publication Date
2025-05-13
Estimated Expiration
2034-06-26

AI Technical Summary

Technical Problem

The existing flue gas waste heat recovery device has low heat utilization during the flue gas recovery process, and the deposition of smoke particles on the inner wall of the pipeline affects smooth and thermal conductivity.

Method used

A flue gas emission recycling device is designed, and the water flow tube is wrapped in the middle by setting up an intake pipe and a return pipe, and the initial heating of the flue gas is used to push the piston into the return pipe to realize the secondary utilization of the flue gas heat, and a filter and a screw are installed in the intake pipe for smoke filtering and cleaning.

Benefits of technology

It improves the recycling rate of smoke heat, reduces heat waste, and through the cooperation of the filter and fan, it reduces smoke and dust deposition, protects the smoothness and thermal conductivity of the pipeline.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222865659U_ABST
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Abstract

The utility model discloses a flue gas emission recycling device which comprises a gas inlet pipe, the gas inlet pipe is fixedly sleeved with a water flow pipe, the water flow pipe is sleeved with a gas return pipe, the gas return pipe is communicated with the gas inlet pipe, the gas inlet pipe is provided with a mounting frame, the mounting frame is provided with a mounting rod, the mounting rod is sleeved with a spring, and the spring is connected with a gas outlet pipe. The mounting rod is provided with a piston, the piston is in sliding connection with the mounting rod and the air inlet pipe, the water flow pipe is sleeved with a fixing ring, the water flow pipe is fixedly connected with the air return pipe through the fixing ring, and the water flow pipe is wrapped in the middle through the air inlet pipe and the air return pipe; when flue gas is initially introduced into the gas inlet pipe, water flow in the water flow pipe is heated, the flue gas heated for the first time ejects the piston to flow into the gas return pipe, the gas return pipe wraps the outer layer of the water flow pipe, the flue gas rotating for the second time still contains part of heat, and heat preservation is conducted on the water flow flowing in the water flow pipe through the heat in the flue gas.
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Description

Technical Field

[0001] The utility model relates to the technical field of flue gas recovery and utilization, in particular to a flue gas emission recovery and utilization device. Background Art

[0002] A thermal power plant is a factory that uses combustibles as fuel to produce electricity. In the process of thermal power generation, coal combustion produces a large amount of flue gas. By installing a flue gas waste heat recovery device at the boiler smoke outlet, the flue gas waste heat can be recovered to heat domestic water or boiler feed water, thereby improving resource utilization.

[0003] In the prior art, the recovered flue gas waste heat is used to heat domestic water. The flue gas will still cause some heat loss during the flow of the recovery pipeline, and the recovery rate of the flue gas heat is not high. In addition, the flue gas contains a large amount of smoke dust particles. During the flow of the pipeline, the smoke dust contained in the flue gas adheres to the inner wall of the pipeline, which will affect the smoothness and thermal conductivity of the pipeline over time. Utility Model Content

[0004] The purpose of the utility model is to provide a fume emission recovery and utilization device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flue gas emission recovery device, comprising an air intake pipe, a water flow pipe is fixedly sleeved on the air intake pipe, a return air pipe is sleeved on the water flow pipe, the return air pipe is connected to the air intake pipe, a mounting frame is provided on the mounting frame, a mounting rod is sleeved on the mounting rod, a spring is sleeved on the mounting rod, a piston is provided on the mounting rod, the piston is slidably connected to the mounting rod and the air intake pipe, a fixing ring is sleeved on the water flow pipe, and the water flow pipe is fixedly connected to the return air pipe via the fixing ring.

[0006] As a further preferred embodiment of the present technical solution, the water flow pipe is provided with a water inlet and a water outlet, the air return pipe is provided with an air outlet, and both ends of the spring are fixedly connected to the piston and the mounting frame respectively.

[0007] As a further preferred embodiment of the present technical solution, the air intake pipe is installed with a fixed frame, the fixed frame is provided with a mounting frame, two groups of filters are embedded in the mounting frame, two groups of symmetrically distributed mounting grooves are opened in the fixed frame, the mounting frame is slidably connected to the fixed frame through the mounting grooves, the fixed frame is provided with two groups of symmetrically distributed fixing frames, both groups of the fixing frames are provided with fans, and the two groups of fans are respectively arranged corresponding to the mounting frames.

[0008] As a further preferred embodiment of the present technical solution, a screw rod is provided in the installation groove, the left ends of the two groups of screw rods are sleeved with synchronous wheels, a synchronous belt is provided in the fixed frame, the synchronous belt is respectively connected to the two groups of synchronous wheels for transmission, and a motor is provided in the fixed frame.

[0009] As a further preferred embodiment of the present technical solution, the screw rod on the left is connected to the output end of the motor, both ends of the screw rod respectively pass through the fixing frame and are rotatably connected to the fixing frame, and the two groups of screw rods respectively pass through both sides of the mounting frame and are threadedly connected to the mounting frame.

[0010] As a further preferred embodiment of the present technical solution, a driven wheel is installed on the fan, a driving wheel is provided in the fixed frame, a belt is provided on the fixed frame, the belt is respectively transmission-connected to the driving wheel and the driven wheel, a motor is provided on the fixed frame, the driving wheel is rotationally connected to the fixed frame via a rotating shaft, and the driving wheel is connected to the output end of the motor via a rotating shaft.

[0011] The utility model provides a flue gas emission recovery and utilization device, which has the following beneficial effects:

[0012] (1) The utility model wraps the water flow pipe in the middle by arranging an air intake pipe and an air return pipe. When the flue gas is initially introduced into the air intake pipe, the water flow in the water flow pipe is heated. The smoke after the first heating pushes the piston open and flows into the air return pipe. The air return pipe is wrapped in the outer layer of the water flow pipe. The smoke in the second rotation still contains some heat. The heat in the smoke is used to keep the water flowing in the water flow pipe warm, reducing the heat dissipated by the water through the outer wall of the pipe, making full use of the residual heat after the flue gas is heated once, and the water flow pipe is evenly wrapped outside the air intake pipe to ensure that the water flow is evenly in contact with the air intake pipe wall and evenly absorbs the heat dissipated by the smoke through the air intake pipe, thereby achieving even heating of the water flow and reducing the waste of heat in the smoke.

[0013] (2) The utility model filters the flue gas flowing in the air intake pipe in advance by setting up an installation frame and a filter, thereby reducing the deposition of smoke dust in the flue gas on the walls of the air intake pipe and the air return pipe, thereby affecting the conduction of heat in the flue gas through the walls of the air intake pipe and the air return pipe, and affecting the efficiency of recovering the waste heat of the flue gas. The two sets of filter screens on the installation frame are regularly switched by the screw rod, and the smoke dust attached to the replaced filter screen is cleaned by the fan, thereby reducing the clogging of the filter screen by particulate matter and affecting the flow efficiency of the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a cross-sectional view of the air intake pipe of the utility model;

[0016] Figure 3 It is a cross-sectional view of the air return pipe of the utility model;

[0017] Figure 4 For the utility model Figure 2 -A magnified view of the structure;

[0018] Figure 5 It is a structural schematic diagram of the fixing frame of the utility model;

[0019] Figure 6 For the utility model Figure 5 -Enlarged view of the structure at B;

[0020] In the figure: 1. air inlet pipe; 2. water flow pipe; 3. air return pipe; 4. water inlet; 5. water outlet; 6. air outlet; 7. mounting frame; 8. mounting rod; 9. piston; 10. spring; 11. fixing ring; 12. fixing frame; 13. mounting frame; 14. filter; 15. mounting groove; 16. screw rod; 17. synchronous wheel; 18. synchronous belt; 19. motor; 20. fixing frame; 21. fan; 22. driven wheel; 23. driving wheel; 24. belt; 25. motor. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] The utility model provides a technical solution: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, a flue gas emission recovery and utilization device includes an air intake pipe 1, a water flow pipe 2 is fixedly sleeved on the air intake pipe 1, a return air pipe 3 is sleeved on the water flow pipe 2, the return air pipe 3 is connected to the air intake pipe 1, a mounting frame 7 is provided on the air intake pipe 1, a mounting rod 8 is provided on the mounting frame 7, a spring 10 is sleeved on the mounting rod 8, a piston 9 is provided on the mounting rod 8, the piston 9 is slidably connected to the mounting rod 8 and the air intake pipe 1, a fixing ring 11 is sleeved on the water flow pipe 2, the water flow pipe 2 is fixedly connected to the return air pipe 3 through the fixing ring 11, a water inlet 4 and a water outlet 5 are provided on the water flow pipe 2, the return air pipe 3 is provided with an air outlet 6, and both ends of the spring 10 are fixedly connected to the piston 9 and the mounting frame 7 respectively.

[0023] The water flow pipe 2 is wrapped in the middle by arranging the air intake pipe 1 and the air return pipe 3. When the flue gas is initially introduced into the air intake pipe 1, the water flow in the water flow pipe 2 is heated. The smoke after the first heating pushes the piston 9 to flow into the air return pipe 3. The air return pipe 3 is wrapped in the outer layer of the water flow pipe 2. The flue gas that circulates for the second time still contains some heat. The heat in the smoke is used to keep the water flowing in the water flow pipe 2 warm, reducing the heat dissipation of the water through the outer wall of the pipe, and making full use of the residual heat after the first flue gas heating. The water flow pipe 2 is evenly wrapped outside the air intake pipe 1 to ensure that the water flow is evenly in contact with the wall of the air intake pipe 1, and evenly absorbs the heat dissipated by the smoke through the air intake pipe 1, thereby achieving even heating of the water flow and reducing the waste of heat in the smoke.

[0024] like Figure 5 and Figure 6 As shown, the air intake pipe 1 is installed with a fixing frame 12, the fixing frame 12 is provided with a mounting frame 13, two groups of filter screens 14 are embedded in the mounting frame 13, two groups of symmetrically distributed mounting grooves 15 are opened in the fixing frame 12, the mounting frame 13 is slidably connected with the fixing frame 12 through the mounting grooves 15, two groups of symmetrically distributed fixing frames 20 are provided on the fixing frame 12, both groups of fixing frames 20 are provided with fans 21, and the two groups of fans 21 are respectively arranged corresponding to the mounting frames 13, a screw rod 16 is provided in the mounting groove 15, and the left ends of the two groups of screw rods 16 are sleeved with synchronous wheels 17, and a synchronous belt 18 is provided in the fixing frame 12, and the synchronous belt 18 is respectively connected to the two groups of synchronous wheels 17 for transmission. A motor 19 is provided in the fixed frame 12, and the left screw rod 16 is connected to the output end of the motor 19. The two ends of the screw rod 16 respectively penetrate the fixed frame 12 and are rotatably connected to the fixed frame 12. The two groups of screw rods 16 respectively penetrate the two sides of the mounting frame 13 and are threadedly connected to the mounting frame 13. A driven wheel 22 is installed on the fan 21. A driving wheel 23 is provided in the fixed frame 20. A belt 24 is provided on the fixed frame 20. The belt 24 is respectively connected to the driving wheel 23 and the driven wheel 22. A motor 25 is provided on the fixed frame 20. The driving wheel 23 is rotatably connected to the fixed frame 20 through a rotating shaft, and the driving wheel 23 is connected to the output end of the motor 25 through a rotating shaft.

[0025] By setting up the installation frame 13 and the filter 14, the flue gas flowing in the intake pipe 1 is filtered in advance, and the deposition of smoke dust in the smoke on the walls of the intake pipe 1 and the return pipe 3 is reduced, which in turn affects the conduction of heat in the smoke to the walls of the intake pipe 1 and the return pipe 3, affecting the efficiency of recovering the waste heat of the smoke. The two sets of filter screens 14 on the installation frame 13 are regularly switched by the screw rod 16, and the smoke dust attached to the replaced filter screen 14 is cleaned by the fan 21, so as to reduce the clogging of particulate matter on the filter screen 14 and affect the circulation efficiency of the smoke.

[0026] The utility model provides a flue gas emission recovery and utilization device, and the specific working principle is as follows: an air intake pipe 1 and an air return pipe 3 are arranged to wrap a water flow pipe 2 in the middle, and when flue gas is initially introduced into the air intake pipe 1, the water flow in the water flow pipe 2 is heated, and the flue gas after the first heating pushes open the piston 9 and flows into the air return pipe 3, and the air return pipe 3 is wrapped in the outer layer of the water flow pipe 2. The flue gas that has been circulated for the second time still contains part of the heat, and the heat in the flue gas is used to keep the water flow flowing in the water flow pipe 2 warm, and the heat dissipation of the water flow through the outer wall of the pipe is reduced, and the residual heat after the first flue gas heating is fully utilized, and the water flow pipe 2 is evenly wrapped outside the air intake pipe 1 to ensure that the water flow is evenly contacted with the wall of the air intake pipe 1. The heat dissipated by the flue gas through the air intake pipe 1 is uniformly absorbed to achieve uniform heating of the water flow and reduce the waste of heat in the flue gas. The flue gas flowing in the air intake pipe 1 is filtered in advance by setting the installation frame 13 and the filter screen 14 to reduce the deposition of smoke dust in the smoke on the walls of the air intake pipe 1 and the return air pipe 3, thereby affecting the conduction of heat in the flue gas by the walls of the air intake pipe 1 and the return air pipe 3, and affecting the recovery efficiency of the waste heat of the flue gas. The two sets of filter screens 14 on the installation frame 13 are regularly switched by the screw rod 16, and the smoke dust attached to the replaced filter screen 14 is cleaned by the fan 21 to reduce the clogging of particulate matter on the filter screen 14 and affect the flow efficiency of the flue gas.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flue gas emission recovery and utilization device, comprising an air intake pipe (1), characterized in that: The air intake pipe (1) is fixedly sleeved with a water flow pipe (2), the water flow pipe (2) is sleeved with a return air pipe (3), the return air pipe (3) is communicated with the air intake pipe (1), the air intake pipe (1) is provided with a mounting frame (7), the mounting frame (7) is provided with a mounting rod (8), the mounting rod (8) is sleeved with a spring (10), the mounting rod (8) is provided with a piston (9), the piston (9) is slidably connected with the mounting rod (8) and the air intake pipe (1), the water flow pipe (2) is sleeved with a fixing ring (11), the water flow pipe (2) is fixedly connected with the return air pipe (3) via the fixing ring (11).

2. The flue gas emission recovery and utilization device according to claim 1, characterized in that: The water flow pipe (2) is provided with a water inlet (4) and a water outlet (5), the air return pipe (3) is provided with an air outlet (6), and the two ends of the spring (10) are respectively fixedly connected to the piston (9) and the mounting frame (7).

3. The flue gas emission recovery and utilization device according to claim 1, characterized in that: The air intake pipe (1) is provided with a fixing frame (12), the fixing frame (12) is provided with a mounting frame (13), two groups of filter screens (14) are embedded in the mounting frame (13), two groups of symmetrically distributed mounting grooves (15) are provided in the fixing frame (12), the mounting frame (13) is slidably connected to the fixing frame (12) through the mounting grooves (15), the fixing frame (12) is provided with two groups of symmetrically distributed fixing frames (20), both groups of the fixing frames (20) are provided with fans (21), and the two groups of fans (21) are respectively arranged corresponding to the mounting frames (13).

4. The flue gas emission recovery and utilization device according to claim 3, characterized in that: A screw rod (16) is arranged in the installation groove (15), and the left ends of the two groups of screw rods (16) are sleeved with synchronous wheels (17). A synchronous belt (18) is arranged in the fixed frame (12), and the synchronous belt (18) is respectively connected to the two groups of synchronous wheels (17) in a transmission manner. A motor (19) is arranged in the fixed frame (12).

5. The flue gas emission recovery and utilization device according to claim 4, characterized in that: The screw rod (16) on the left side is connected to the output end of the motor (19), and the two ends of the screw rod (16) respectively penetrate the fixed frame (12) and are rotatably connected to the fixed frame (12), and the two groups of screw rods (16) respectively penetrate the two sides of the installation frame (13) and are threadedly connected to the installation frame (13).

6. The flue gas emission recovery and utilization device according to claim 3, characterized in that: A driven wheel (22) is mounted on the fan (21), a driving wheel (23) is arranged in the fixed frame (20), a belt (24) is arranged on the fixed frame (20), the belt (24) is respectively connected to the driving wheel (23) and the driven wheel (22) in a transmission manner, a motor (25) is arranged on the fixed frame (20), the driving wheel (23) is connected to the fixed frame (20) in a rotational manner via a rotating shaft, and the driving wheel (23) is connected to an output end of the motor (25) via a rotating shaft.