Flue gas purification structure of waste heat boiler
By using a compression chamber and piston system to deliver flue gas to the contaminated area, combined with a purification liquid and a filtration device, the problems of short contact time and limited area in flue gas purification devices are solved, achieving efficient, safe and reliable flue gas purification results.
Patent Information
- Application Number
- CN202423128279.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-18
AI Technical Summary
Existing flue gas purification devices for waste heat boilers suffer from problems such as short contact time and limited contact area between flue gas and purification liquid, and the need for regular cleaning or replacement of activated carbon particles, resulting in low purification efficiency and cumbersome operation.
The system uses a compression chamber and piston system to transport flue gas to the contaminated area. Combined with a purification liquid and a filtration device, it increases the contact area and time between the flue gas and the purification liquid. The mixing effect is enhanced by a stirring paddle. The purification liquid is used to perform multi-stage filtration of the flue gas and recover particulate matter.
It improves flue gas purification efficiency, simplifies operation procedures, achieves efficient, safe and reliable flue gas purification, and reduces the consumption of purification liquid and the frequency of equipment maintenance.
Smart Images
Figure CN223602266U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a waste heat boiler technical field especially relates to a waste heat boiler's flue gas purification structure. BACKGROUND
[0002] Waste heat boiler refers to the utilization industrial process waste heat to produce steam's boiler, and the high temperature flue gas in industrial production process can contain a large amount of pollutants, and the waste heat boiler mixes the sundries, sulfide etc. in the flue gas of the original combustion heating equipment when collecting the high temperature flue gas and collecting heat again, and the direct discharge of the flue gas of the waste heat boiler can cause great pollution to the air, and the existing flue gas purification device usually adopts activated carbon particle, sprays device etc. Purification device to the flue gas purification, but the contact time of the sprays device and the flue gas is limited, and there is a certain gap between the spray liquid of the sprays device, so that part of the flue gas is directly discharged without the purification of the spray liquid, and the activated carbon particle can absorb the dust particles in the smoke dust, and needs to be cleaned or replaced regularly, which is time-consuming and laborious. SUMMARY
[0003] The utility model provides a kind of flue gas of waste heat boiler's flue gas purification structure by compression box and piston to the pollution area transport flue gas, by purification liquid and filter device increase the contact area and time of flue gas and purification liquid, increase the purification effect of flue gas, simple and efficient, safe and reliable, easy to operate.
[0004] The utility model is realized through the following technical schemes, provide waste heat boiler's flue gas purification structure, including purification box, purification box is separated into pollution area and purification area by filter device in, pollution area and purification area are connected with inlet pipe and exhaust pipe respectively;Inlet pipe is connected with pollution area by compression box, and the communication part of inlet pipe and compression box is equipped with one-way check valve A with opening towards compression box, and the communication part of compression box and pollution area is equipped with one-way check valve B with opening towards pollution area;Compression box is equipped with piston with compression box inside adhesion setting, and compression box is equipped with drive mechanism for driving piston to move towards one-way check valve B;Pollution area is located below filter device, and purification box is equipped with purification liquid covering filter device, and the communication part of compression box and pollution area is located at the bottom of pollution area;Flue gas is transported to pollution area by compression box and piston, and the contact area and time of flue gas and purification liquid are increased by purification liquid and filter device, and the purification effect of flue gas is increased;Water flow driven by flue gas is continuously cleaned to filter device.
[0005] As optimization, pollution area is equipped with a plurality of exhaust ports, and exhaust ports are sequentially arranged at the bottom of pollution area;More evenly discharge flue gas into purification liquid through exhaust port sequentially arranged at the bottom of pollution area.
[0006] As optimization, stirring paddles are arranged in the pollution area, and the blades of the stirring paddles are arranged in a horizontal direction; the stirring paddles are driven to rotate by the upward floating flue gas, and the flue gas and the purification liquid are continuously stirred by the stirring paddles, so that the contact area and time of the flue gas and the purification liquid are increased.
[0007] As optimization, a plurality of through holes are formed in the blades; the mixing of the flue gas and the purification liquid is further accelerated through the through holes.
[0008] As optimization, the filtering device comprises a plurality of filter screens arranged in sequence from the pollution area to the purification area, and the mesh size of the filter screens is sequentially reduced from the pollution area to the purification area; the particulate matters in the delay are filtered by the filter screens in sequence.
[0009] As optimization, the purification area is communicated with a liquid inlet pipe, and the lower end of the pollution area is communicated with a liquid outlet pipe; the purification liquid in the purification tank is continuously replaced and the particulate matters filtered by the filtering device are carried away through the liquid inlet pipe and the liquid outlet pipe, and the residual waste heat in the flue gas is continuously recovered through the purification liquid.
[0010] The beneficial effects of the utility model are as follows: the flue gas is delivered to the pollution area through the compression tank and the piston, the contact area and time of the flue gas and the purification liquid are increased through the purification liquid and the filtering device, and the purification effect of the flue gas is increased; the filtering device is continuously cleaned by the water flow driven by the flue gas; the flue gas floating upward drives the stirring paddles to rotate, the flue gas and the purification liquid are continuously stirred by the stirring paddles, and the contact area and time of the flue gas and the purification liquid are increased; the purification liquid in the purification tank is continuously replaced and the particulate matters filtered by the filtering device are carried away through the liquid inlet pipe and the liquid outlet pipe, and the residual waste heat in the flue gas is continuously recovered through the purification liquid. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 The utility model structure schematic diagram is shown in the figure;
[0012] The figure shows that:
[0013] 1, purification tank, 2, filtering device, 3, inlet pipe, 4, exhaust pipe, 5, compression tank, 6, check valve A, 7, check valve B, 8, piston, 9, driving mechanism, 10, purification liquid, 11, exhaust port, 12, stirring paddle, 13, liquid inlet pipe, 14, liquid outlet pipe, 101, pollution area, 102, purification area, 201, filter screen, 1201, blade. DETAILED DESCRIPTION
[0014] In order to clearly illustrate the technical features of the scheme, the scheme will be described below through specific embodiments.
[0015] For example, Figure 1The utility model discloses a waste heat boiler's flue gas purification structure, including purification box 1, purification box 1 is separated for pollution area 101 and purification area 102 through filter device 2 in, pollution area 101 and purification area 102 are connected with air inlet pipe 3 and exhaust pipe 4 respectively, air inlet pipe 3 is communicated pollution area 101 through compression box 5, and the communication part of air inlet pipe 3 and compression box 5 is equipped with the one-way check valve A 6 of the opening towards compression box 5, and the communication part of compression box 5 and pollution area 101 is equipped with the one-way check valve B 7 of the opening towards pollution area 101, be equipped with the piston 8 of sticking with compression box 5 inside in compression box 5, and compression box 5 is equipped with the drive mechanism 9 of driving piston 8 towards the motion of one-way check valve B 7, pollution area 101 is located below filter device 2, and purification box 1 is equipped with the purification liquid 10 covering filter device 2, and the communication part of compression box 5 and pollution area 101 is located at the bottom of pollution area 101, purification area 102 is located above filter device 2, drive mechanism 9 is prior art, can adopt electric push rod, one-way check valve A 6 and one-way check valve B 7 are located at the same side of compression box 5, purification liquid 10 is prior art.
[0016] The flue gas is input into the air inlet pipe 3, passes through the one-way check valve A 6 and enters the compression box 5, the drive mechanism 9 is started, the drive mechanism 9 drives the piston 8 to move in the compression box 5 towards the side away from the one-way check valve B 7, the one-way check valve A 6 is opened, the one-way check valve B 7 is closed, the flue gas in the air inlet pipe 3 accelerates to pass through the one-way check valve A 6 and enters the compression box 5, the drive mechanism 9 drives the piston 8 to move in the compression box 5 towards the one-way check valve B 7, the one-way check valve A 6 is closed, the one-way check valve B 7 is opened, the flue gas in the compression box 5 passes through the one-way check valve B 7 and enters the pollution area 101 in the purification box 1, the flue gas floats upwards in the purification liquid 10 under the action of pressure, until the flue gas meets the filter device 2 and passes through the filter device 2 to enter the purification area 102, the particulate matters in the flue gas are filtered and retained in the pollution area 101 by the filter device 2, the purification liquid 10 purifies the impurities in the flue gas, at the same time, the water flow driven by the flue gas cleans the filter device 2, the particulate matters on the filter device 2 are separated from the filter device 2, the flue gas in the purification area 102 is discharged from the exhaust port 11.
[0017] As shown in the pollution area 101, a plurality of exhaust ports 11 are arranged in the bottom of the pollution area 101, and the exhaust ports 11 are evenly arranged in the bottom of the pollution area 101. Figure 1 The flue gas in the compression box 5 passes through the one-way check valve B 7 and enters the pollution area 101 in the purification box 1 through the exhaust port 11.
[0018] As shown in the pollution area 101, a plurality of exhaust ports 11 are arranged in the bottom of the pollution area 101, and the exhaust ports 11 are evenly arranged in the bottom of the pollution area 101.
[0019] Figure 1 A stirring paddle 12 is installed in the contaminated area 101 shown, and the blades 1201 of the stirring paddle 12 are inclined in the horizontal direction; the axis of the stirring paddle 12 extends in the vertical direction, and the blades 1201 extend in the horizontal direction.
[0020] Under pressure, the flue gas floats upward in the purification liquid 10. The water flow stirred by the flue gas impacts the impeller 1201. The agitator 12 rotates under the drive of the water flow and continuously stirs the flue gas and the purification liquid 10. The water flow continuously cleans the filter device 2 under the drive of the propeller.
[0021] like Figure 1 The blade 1201 shown has several through holes.
[0022] The agitator 12 rotates, and the flue gas and purified liquid 10 pass through the through hole and are further mixed.
[0023] like Figure 1 The filter device 2 shown includes several filter screens 201 arranged sequentially along the contaminated area 101 toward the purified area 102, and the mesh size of the filter screens 201 gradually decreases along the direction from the contaminated area 101 toward the purified area 102.
[0024] The flue gas passes through the filter screen 201 in sequence, and the filter screen 201 filters the particulate matter in the flue gas step by step.
[0025] like Figure 1 The purification zone 102 shown is connected to an inlet pipe 13, and the lower end of the contaminated zone 101 is connected to a drain pipe 14.
[0026] Purification liquid 10 is introduced into the inlet pipe 13. The purification liquid 10 enters the purification zone 102 and flows from the purification zone 102 toward the contaminated zone 101. The purification liquid 10 carries the particles on the filter device 2 and the particles in the contaminated zone 101 out through the drain pipe 14.
[0027] In actual production process, the flue gas is input into the inlet pipe 3, the flue gas passes through the one-way check valve A6 and enters the compression box 5; the driving mechanism 9 is started, the driving mechanism 9 drives the piston 8 to move in the compression box 5 towards the side away from the one-way check valve B7, the one-way check valve A6 is opened, the one-way check valve B7 is closed, the flue gas in the inlet pipe 3 accelerates to pass through the one-way check valve A6 and enters the compression box 5; the driving mechanism 9 drives the piston 8 to move in the compression box 5 towards the one-way check valve B7, the one-way check valve A6 is closed, the one-way check valve B7 is opened, the flue gas in the compression box 5 passes through the one-way check valve B7 and enters the pollution area 101 in the purification box 1 through the exhaust port 11, the flue gas floats upwards in the purification liquid 10 under the action of pressure, the water flow driven by the flue gas impacts on the paddle 1201, the stirring paddle 12 rotates under the driving of the water flow and continuously stirs the flue gas and the purification liquid 10, and the water flow is continuously cleaned to the filter device 2 under the driving of the propeller; the stirred flue gas floats upwards in the purification liquid 10 under the action of pressure, until the flue gas reaches the filter device 2, the flue gas passes through the filter screen 201 of the filter device 2 in turn and enters the purification area 102, the filter screen 201 filters the particulate matters in the flue gas step by step, the particulate matters in the flue gas are filtered and stay in the pollution area 101, the purification liquid 10 purifies the impurities in the flue gas, and the water flow driven by the flue gas cleans the filter device 2, and the particulate matters on the filter device 2 are separated from the filter device 2; meanwhile, the purification liquid 10 is input into the liquid inlet pipe 13, the purification liquid 10 enters the purification area 102 and flows from the purification area 102 towards the pollution area 101, the purification liquid 10 drives the particulate matters on the filter device 2 and the particulate matters in the pollution area 101 to be discharged through the liquid outlet pipe 14; the purified flue gas in the purification area 102 is discharged from the exhaust port 11.
[0028] Of course, the above description is not limited to the above examples, and the technical features not described in the utility model can be realized by or using the prior art, which will not be described here; the above embodiments and drawings are only used to illustrate the technical scheme of the utility model and are not a limitation on the utility model, the utility model has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that the changes, modifications, additions or replacements made by those skilled in the art within the essential scope of the utility model do not deviate from the purpose of the utility model, and should also belong to the protection scope of the claims of the utility model.
Claims
1. A flue gas purification structure of a waste heat boiler, comprising a purification box (1), the purification box (1) is divided into a pollution area (101) and a purification area (102) by a filtering device (2), the pollution area (101) and the purification area (102) are respectively communicated with an air inlet pipe (3) and an air outlet pipe (4); characterized in that: The air inlet pipe (3) is communicated with the pollution area (101) through the compression box (5), and the communication part of the air inlet pipe (3) and the compression box (5) is provided with a one-way check valve A (6) with an opening facing the compression box (5), and the communication part of the compression box (5) and the pollution area (101) is provided with a one-way check valve B (7) with an opening facing the pollution area (101); The compression box (5) is provided with a piston (8) arranged in close contact with the inside of the compression box (5), and the compression box (5) is provided with a driving mechanism (9) for driving the piston (8) to move towards the one-way check valve B (7); The pollution area (101) is located below the filtering device (2), the purification tank (1) is provided with a purification liquid (10) covering the filtering device (2), and the communication part of the compression box (5) and the pollution area (101) is located at the bottom of the pollution area (101).
2. The flue gas cleaning structure of a waste heat boiler according to claim 1, characterized in that: A plurality of exhaust ports (11) are arranged in the pollution area (101).
3. The flue gas cleaning structure of a waste heat boiler according to claim 1, characterized in that: A plurality of exhaust ports (11) are arranged in the pollution area (101).
4. The flue gas cleaning structure of a waste heat boiler according to claim 3, characterized in that: The pollution area (101) is provided with a stirring paddle (12), and the paddle blade (1201) of the stirring paddle (12) is inclined along the horizontal direction.
5. The flue gas cleaning structure of a waste heat boiler according to claim 1, characterized in that: A plurality of through holes are formed in the paddle blade (1201).
6. The flue gas cleaning structure of a waste heat boiler according to claim 1, characterized in that: The filtering device (2) comprises a plurality of filter screens (201) arranged in sequence along the pollution area (101) towards the purification area (102), and the mesh size of the filter screens (201) decreases in sequence along the direction from the pollution area (101) to the purification area (102). The purification area (102) is communicated with a liquid inlet pipe (13), and the lower end of the pollution area (101) is communicated with a liquid outlet pipe (14).