Power station boiler tail gas treatment device

Abstract

The utility model discloses a power station boiler tail gas treatment device, which relates to the technical field of boiler tail gas treatment, and comprises a tail gas input pipe and a gas containing chamber, the gas containing chamber is connected to the output end of the tail gas input pipe, the gas containing chamber is connected with a tail gas output pipe, and the output end of the tail gas output pipe is connected with a gas flow control structure. The outer wall face of the airflow control structure is sleeved with a tail gas treatment structure, and an auxiliary circulation structure is installed on the lower wall face of the airflow control structure. The tail gas treatment device has the advantages that the two tail gas guide pipes are controlled by switching the two-way control valve to respectively discharge tail gas into the first tail gas treatment chamber and the second tail gas treatment chamber, so that the two tail gas treatment chambers alternately work, the tail gas is continuously discharged, and the problems that residues are generated during tail gas purification and the tail gas is polluted are solved. According to an existing power station boiler tail gas treatment device, tail gas emission needs to be suspended to treat residues, and the working efficiency is wasted during suspension.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler tail gas treatment, in particular to a power station boiler tail gas treatment device. Background Art

[0002] A power station is a facility that provides power support. Its main function is to provide the required energy or power for various mechanical equipment. At the end of its work, the exhaust gas needs to be purified and then discharged, otherwise it will cause serious damage to the atmospheric environment.

[0003] Residue will be generated during exhaust gas purification. The existing power station boiler exhaust gas treatment device needs to suspend exhaust gas emissions to treat the residue, which wastes work efficiency during the suspension. The existing power station boiler exhaust gas treatment device requires manual real-time control of the liquid recovery device, which consumes a lot of human resources. Utility Model Content

[0004] The technical problem to be solved by the present invention is that residue is generated during exhaust gas purification. The existing power station boiler exhaust gas treatment device needs to suspend exhaust gas emissions to treat the residue, which wastes work efficiency during the suspension. The existing power station boiler exhaust gas treatment device requires manual real-time control of the liquid recovery device, which consumes a lot of human resources.

[0005] In order to solve the above technical problems, the technical solution of the present invention is a power station boiler exhaust gas treatment device, including an exhaust gas inlet pipe and an air chamber, the air chamber is connected to the output end of the exhaust gas inlet pipe, the air chamber is connected to the exhaust gas output pipe, the output end of the exhaust gas output pipe is connected to an airflow control structure, the outer wall surface of the airflow control structure is covered with an exhaust gas treatment structure, and the lower wall surface of the airflow control structure is installed with an auxiliary circulation structure.

[0006] As a further solution of the present invention: the airflow control structure includes: a two-way control valve, a load-bearing frame, a positioning frame, two exhaust gas guide pipes and several exhaust gas injection pipes; the two-way control valve is mounted on the output end of the exhaust gas output pipe, the load-bearing frame is installed on the lower wall of the air chamber, the positioning frame is installed on the lower wall of the two-way control valve and is connected to the load-bearing frame, the two exhaust gas guide pipes are respectively installed in the two-way control valve, and the several exhaust gas injection pipes are respectively connected to the lower walls of the two exhaust gas guide pipes.

[0007] As a further solution of the present invention: the exhaust gas treatment structure includes: a first exhaust gas treatment chamber, a second exhaust gas treatment chamber, two drain pipes, two filter fixing frames, two auxiliary filter screens, two sealing threaded sleeves, two first liquid level detectors, two second liquid level detectors, four guide plates and four vibration motors; the first exhaust gas treatment chamber and the second exhaust gas treatment chamber are respectively mounted on the outer wall surfaces of the two exhaust gas guide pipes, the two drain pipes are respectively connected to the lower wall surfaces of the first exhaust gas treatment chamber and the second exhaust gas treatment chamber, and the two filter fixing frames are respectively mounted on the outer wall surfaces of the two drain pipes , and are threadedly connected to the two drain pipes, the two auxiliary filter screens are respectively installed on the inner wall surfaces of the two filter screen fixing frames, the two sealing threaded sleeves are respectively mounted on the lower end surfaces of the two filter screen fixing frames, the two first liquid level detectors are respectively installed on the inner wall surfaces of the first exhaust gas treatment chamber and the second exhaust gas treatment chamber, the two second liquid level detectors are respectively installed on the inner wall surfaces of the first exhaust gas treatment chamber and the second exhaust gas treatment chamber, the four guide plates are respectively installed on the inner wall surfaces of the first exhaust gas treatment chamber and the second exhaust gas treatment chamber, and the four vibration motors are respectively installed on the lower wall surfaces of the four guide plates.

[0008] As a further solution of the present utility model: the auxiliary circulation structure includes: a recovery box, two diversion holes, two water pumps and two water pumping pipes; the recovery box is installed on the lower wall of the load-bearing frame and the positioning frame, the two diversion holes are respectively opened on the upper wall of the recovery box and correspond to the two drainage pipes, the two water pumps are respectively installed on the upper wall of the recovery box, and the two water pumping pipes are respectively connected to the recovery box through the two water pumps.

[0009] As a further solution of the present invention: the first tail gas treatment chamber and the second tail gas treatment chamber are combined into one, and fixing frames are respectively installed on the outer walls thereof.

[0010] As a further solution of the present invention: the two first liquid level detectors are respectively arranged above the two second liquid level detectors, and the two second liquid level detectors are respectively arranged above the two exhaust gas guide pipes.

[0011] As a further solution of the present invention: the four guide plates are symmetrically arranged and form an angle with the horizontal plane.

[0012] As a further solution of the present invention: the outer wall surfaces of the two water pumping pipes are sleeved with sealing top covers, and the sealing top covers are connected to the exhaust pipe.

[0013] The utility model adopts the above technical solution and has the following advantages compared with the prior art:

[0014] By switching the two-way control valve, the two exhaust gas guide pipes are controlled to discharge the exhaust gas into the first exhaust gas treatment chamber and the second exhaust gas treatment chamber respectively, so that the two exhaust gas treatment chambers work alternately to achieve uninterrupted exhaust gas emission, which solves the problem of residue generated during exhaust gas purification. The existing power station boiler exhaust gas treatment device needs to suspend exhaust gas emission to process the residue, which wastes work efficiency during the suspension.

[0015] When the first liquid level detector detects the water level, the operator stops the water pump. At this time, the operator switches the two-way control valve and introduces the boiler exhaust gas into the first exhaust gas treatment chamber again. The operator processes the second exhaust gas treatment chamber according to the above steps. As the moisture in the first exhaust gas treatment chamber gradually decreases with purification, when the second liquid level detector cannot detect the water level, the system automatically starts the water pump and injects water into the first exhaust gas treatment chamber until the first liquid level detector detects the water level again. The water pump is turned off, which solves the problem that the existing power station boiler exhaust gas treatment device requires manual real-time control of the liquid recovery device, which consumes relatively serious human resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a power station boiler tail gas treatment device in an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the airflow control structure of a power station boiler tail gas treatment device in an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the tail gas treatment structure of a power station boiler tail gas treatment device in an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the auxiliary circulation structure of a power station boiler exhaust gas treatment device in an embodiment of the present utility model.

[0020] In the figure, 1. exhaust gas inlet pipe; 2. air chamber; 3. exhaust gas output pipe; 4. two-way control valve; 5. load-bearing frame; 6. positioning frame; 7. exhaust gas guide pipe; 8. exhaust gas injection pipe; 9. first exhaust gas treatment chamber; 10. second exhaust gas treatment chamber; 11. drain pipe; 12. filter fixing frame; 13. auxiliary filter; 14. sealing threaded sleeve; 15. first liquid level detector; 16. second liquid level detector; 17. guide plate; 18. vibration motor; 19. recovery box; 20. diversion hole; 21. water pump; 22. suction pipe; 23. fixing frame; 24. sealing top cover; 25. exhaust pipe. DETAILED DESCRIPTION

[0021] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0022] Example 1, please refer to Figures 1-4 A power station boiler exhaust gas treatment device includes an exhaust gas input pipe 1 and an air chamber 2. The air chamber 2 is connected to the output end of the exhaust gas input pipe 1, and the air chamber 2 is connected to the exhaust gas output pipe 3. The output end of the exhaust gas output pipe 3 is connected to an airflow control structure. The outer wall of the airflow control structure is equipped with an exhaust gas treatment structure, and the lower wall of the airflow control structure is installed with an auxiliary circulation structure.

[0023] See also Figure 2 The airflow control structure includes: a two-way control valve 4, a load-bearing frame 5, a positioning frame 6, two exhaust gas guide pipes 7 and a number of exhaust gas injection pipes 8; the two-way control valve 4 is mounted on the output end of the exhaust gas output pipe 3, the load-bearing frame 5 is installed on the lower wall of the air chamber 2, the positioning frame 6 is installed on the lower wall of the two-way control valve 4 and is connected to the load-bearing frame 5, the two exhaust gas guide pipes 7 are respectively installed in the two-way control valve 4, and the several exhaust gas injection pipes 8 are respectively connected to the lower walls of the two exhaust gas guide pipes 7.

[0024] See also Figure 3 The exhaust gas treatment structure includes: a first exhaust gas treatment chamber 9, a second exhaust gas treatment chamber 10, two drain pipes 11, two filter fixing frames 12, two auxiliary filter screens 13, two sealing threaded sleeves 14, two first liquid level detectors 15, two second liquid level detectors 16, four guide plates 17 and four vibration motors 18; the first exhaust gas treatment chamber 9 and the second exhaust gas treatment chamber 10 are respectively mounted on the outer wall surfaces of the two exhaust gas guide pipes 7, the two drain pipes 11 are respectively connected to the lower wall surfaces of the first exhaust gas treatment chamber 9 and the second exhaust gas treatment chamber 10, the two filter fixing frames 12 are respectively mounted on the outer wall surfaces of the two drain pipes 11, and are connected to the The two drain pipes 11 are connected by threads, the two auxiliary filter screens 13 are respectively installed on the inner wall surfaces of the two filter screen fixing frames 12, the two sealing threaded sleeves 14 are respectively mounted on the lower end surfaces of the two filter screen fixing frames 12, the two first liquid level detectors 15 are respectively installed on the inner wall surfaces of the first exhaust gas treatment chamber 9 and the second exhaust gas treatment chamber 10, the two second liquid level detectors 16 are respectively installed on the inner wall surfaces of the first exhaust gas treatment chamber 9 and the second exhaust gas treatment chamber 10, the four guide plates 17 are respectively installed on the inner wall surfaces of the first exhaust gas treatment chamber 9 and the second exhaust gas treatment chamber 10, and the four vibration motors 18 are respectively installed on the lower wall surfaces of the four guide plates 17.

[0025] See also Figure 3The four guide plates 17 are symmetrically arranged and form an angle with the horizontal plane. In this embodiment, the angle can facilitate the solid particles generated by the fusion of boiler exhaust gas and water to slowly fall onto the guide plates 17.

[0026] See also Figure 1 The outer wall surfaces of the two water extraction pipes 22 are covered with a sealing top cover 24 , which is connected to the exhaust pipe 25 . In this embodiment, the two water extraction pipes 22 and the exhaust pipe 25 are fixed by the sealing top cover 24 .

[0027] In this embodiment, the two exhaust gas guide pipes 7 are controlled by switching the two-way control valve 4 to discharge exhaust gas into the first exhaust gas treatment chamber 9 and the second exhaust gas treatment chamber 10 respectively, so that the two exhaust gas treatment chambers work alternately to achieve uninterrupted exhaust gas discharge.

[0028] Specifically, the operator sends the boiler exhaust gas to the gas chamber 2 through the exhaust inlet pipe 1. At this time, the two-way control valve 4 corresponds to the first exhaust treatment chamber 9. The boiler exhaust gas is then transported to the two exhaust guide pipes 7 through the exhaust output pipe 3, and finally enters the first exhaust treatment chamber 9 through a number of exhaust injection pipes 8. It is fused with the water inside the first exhaust treatment chamber 9 for purification. The solid particles generated by the fusion of the boiler exhaust gas and the water slowly fall on the guide plate 17, and the purified gas is extracted by the exhaust pipe 25. After a certain period of time, the operator switches the two-way control valve 4, and the same process is repeated in the second exhaust treatment chamber. The process is carried out in the treatment chamber 10. At this time, the operator begins to treat the first exhaust treatment chamber 9. First, the operator unscrews the sealing threaded sleeve 14 around the filter fixing frame 12. The water in the first exhaust treatment chamber 9 flows into the recovery box 19 along the auxiliary filter 13 through the guide hole 20. Then the operator returns the sealing threaded sleeve 14 to its place. Then the operator starts the vibration motor 18 to guide the solid particles on the guide plate 17 along the drain pipe 11 to the two auxiliary filter screens 13. Finally, the operator unscrews the filter fixing frame 12 around the drain pipe 11 and resets it after treating the internal solid particles.

[0029] Example 2, please refer to Figure 4 The auxiliary circulation structure includes: a recovery box 19, two diversion holes 20, two water pumps 21 and two water pumping pipes 22; the recovery box 19 is installed on the lower wall of the load-bearing frame 5 and the positioning frame 6, the two diversion holes 20 are respectively opened on the upper wall of the recovery box 19, and correspond to the two drainage pipes 11, the two water pumps 21 are respectively installed on the upper wall of the recovery box 19, and the two water pumping pipes 22 are respectively connected to the recovery box 19 through the two water pumps 21.

[0030] See also Figure 3The two first liquid level detectors 15 are respectively arranged above the two second liquid level detectors 16, and the two second liquid level detectors 16 are respectively arranged above the two exhaust gas guide pipes 7. In this embodiment, when the water pump 21 is started, the second liquid level detectors 16 stop working, and when the water pump 21 is turned off, the second liquid level detectors 16 continue to work. The recovery tank 19 is connected to the water injection system to ensure that there is sufficient water in the recovery tank 19.

[0031] See also Figure 3 The first tail gas treatment chamber 9 and the second tail gas treatment chamber 10 are merged into one, and the outer wall surfaces thereof are respectively installed with fixing frames 23. In this embodiment, the first tail gas treatment chamber 9 and the second tail gas treatment chamber 10 are fixed by the fixing frames 23.

[0032] In this embodiment, when the first liquid level detector 15 detects the water level, the operator stops the water pump 21. At this time, the operator switches the two-way control valve 4 and introduces the boiler exhaust gas into the first exhaust gas treatment chamber 9 again. The operator processes the second exhaust gas treatment chamber 10 according to the above steps. As the water content in the first exhaust gas treatment chamber 9 gradually decreases as it is purified, when the second liquid level detector 16 cannot detect the water level, the system automatically starts the water pump 21 and injects water into the first exhaust gas treatment chamber 9 until the first liquid level detector 15 detects the water level again, and then the water pump 21 is turned off.

[0033] Specifically, after the operator resets the filter fixing frame 12, the water pump 21 corresponding to the first exhaust gas treatment chamber 9 is started, and the water stored in the recovery tank 19 is pumped into the first exhaust gas treatment chamber 9 through the pumping pipe 22. When the first liquid level detector 15 detects the water level, the operator stops the water pump 21. At this time, the operator switches the two-way control valve 4 to introduce the boiler exhaust gas into the first exhaust gas treatment chamber 9 again. The operator processes the second exhaust gas treatment chamber 10 according to the above steps. As the water content in the first exhaust gas treatment chamber 9 gradually decreases with purification, when the second liquid level detector 16 cannot detect the water level, the system automatically starts the water pump 21 to inject water into the first exhaust gas treatment chamber 9 until the first liquid level detector 15 detects the water level again, and the water pump 21 is turned off. During this period, the second liquid level detector 16 stops working when the water pump 21 starts, and continues to work when the water pump 21 is turned off. The recovery tank 19 is connected to the water injection system to ensure that there is sufficient water in the recovery tank 19.

[0034] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A power station boiler tail gas treatment device, comprising a tail gas inlet pipe (1) and a gas chamber (2), characterized in that: The air chamber (2) is connected to the output end of the exhaust gas input pipe (1), the air chamber (2) is connected to the exhaust gas output pipe (3), the output end of the exhaust gas output pipe (3) is connected to an airflow control structure, the outer wall surface of the airflow control structure is equipped with an exhaust gas treatment structure, and the lower wall surface of the airflow control structure is installed with an auxiliary circulation structure.

2. A power station boiler tail gas treatment device according to claim 1, characterized in that: The airflow control structure comprises: a two-way control valve (4), a load-bearing frame (5), a positioning frame (6), two exhaust gas guide pipes (7) and a plurality of exhaust gas injection pipes (8); The two-way control valve (4) is mounted on the output end of the exhaust gas output pipe (3); the load-bearing frame (5) is mounted on the lower wall of the air chamber (2); the positioning frame (6) is mounted on the lower wall of the two-way control valve (4) and is connected to the load-bearing frame (5); the two exhaust gas guide pipes (7) are respectively mounted in the two-way control valve (4); and a plurality of exhaust gas injection pipes (8) are respectively connected to the lower walls of the two exhaust gas guide pipes (7).

3. A power station boiler tail gas treatment device according to claim 2, characterized in that: The tail gas treatment structure comprises: a first tail gas treatment chamber (9), a second tail gas treatment chamber (10), two drainage pipes (11), two filter screen fixing frames (12), two auxiliary filter screens (13), two sealing threaded sleeves (14), two first liquid level detectors (15), two second liquid level detectors (16), four guide plates (17), and four vibration motors (18); The first tail gas treatment chamber (9) and the second tail gas treatment chamber (10) are respectively mounted on the outer wall surfaces of the two tail gas guide pipes (7); the two drain pipes (11) are respectively connected to the lower wall surfaces of the first tail gas treatment chamber (9) and the second tail gas treatment chamber (10); the two filter fixing frames (12) are respectively mounted on the outer wall surfaces of the two drain pipes (11) and are connected to the two drain pipes (11) by threads; the two auxiliary filter screens (13) are respectively mounted on the inner wall surfaces of the two filter fixing frames (12); the two sealing threaded sleeves (14) are respectively mounted on the inner wall surfaces of the two filter fixing frames (12); Mounted on the lower end surfaces of the two filter fixing frames (12), the two first liquid level detectors (15) are respectively mounted on the inner wall surfaces of the first exhaust gas treatment chamber (9) and the second exhaust gas treatment chamber (10), the two second liquid level detectors (16) are respectively mounted on the inner wall surfaces of the first exhaust gas treatment chamber (9) and the second exhaust gas treatment chamber (10), the four guide plates (17) are respectively mounted on the inner wall surfaces of the first exhaust gas treatment chamber (9) and the second exhaust gas treatment chamber (10), and the four vibration motors (18) are respectively mounted on the lower wall surfaces of the four guide plates (17).

4. A power station boiler tail gas treatment device according to claim 3, characterized in that: The auxiliary circulation structure comprises: a recovery box (19), two diversion holes (20), two water pumps (21) and two water pumping pipes (22); The recovery box (19) is installed on the lower wall of the load-bearing frame (5) and the positioning frame (6); the two diversion holes (20) are respectively opened on the upper wall of the recovery box (19) and correspond to the two drainage pipes (11); the two water pumps (21) are respectively installed on the upper wall of the recovery box (19); and the two water pumping pipes (22) are respectively connected to the recovery box (19) through the two water pumps (21).

5. The power station boiler tail gas treatment device according to claim 3, characterized in that: The first tail gas treatment chamber (9) and the second tail gas treatment chamber (10) are integrated into one, and the outer walls thereof are respectively provided with fixing frames (23).

6. The power station boiler tail gas treatment device according to claim 3, characterized in that: The two first liquid level detectors (15) are respectively arranged above the two second liquid level detectors (16), and the two second liquid level detectors (16) are respectively arranged above the two exhaust gas guide pipes (7).

7. The power station boiler tail gas treatment device according to claim 3, characterized in that: The four guide plates (17) are symmetrically arranged and form an angle with the horizontal plane.

8. The power station boiler tail gas treatment device according to claim 4, characterized in that: The outer wall surfaces of the two water pumping pipes (22) are sheathed with sealing top covers (24), and the sealing top covers (24) are connected to the exhaust pipe (25).

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