Flue gas purification device for 9H-stage combined cycle generator set

Abstract

The utility model provides a 9H-level combined cycle generator set flue gas purification device, which relates to the technical field of generator set flue gas purification, and comprises a purification machine body, a connecting frame plate is welded at the left side end of the purification machine body, the inner side of the connecting frame plate is connected with a limiting plate through a spring strut, and a flue gas filter box is welded at the left side of the limiting plate; a filter screen plate is inserted into the inner side of the flue gas filter box, a fixed cover plate is screwed to the upper end of the flue gas filter box, a vibration motor is mounted on the surface of the fixed cover plate, the right side of the flue gas filter box communicates with the desulfurization chamber through a ventilation hose, and nozzles are spirally distributed on the inner wall of the desulfurization chamber; the spray head is connected with an alkaline liquid conveying pipe through a spiral liquid guiding cavity, an electric heater is installed on the outer side of the denitration chamber in a surrounding mode, and a denitration catalyst plate body is inserted into the inner cavity wall of the denitration chamber. According to the utility model, the problem that particulate matters and dust impurities in the flue gas are easily attached to the pipe wall to cause blockage when the flue gas circulates in the through pipe in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of generator set flue gas purification technology, specifically to a 9H-class combined cycle generator set flue gas purification device. Background Technology

[0002] The 9H-class combined cycle generator set refers to a gas-steam combined cycle unit using a 9HA.02 gas turbine. It features high efficiency, environmental friendliness, and advanced technology, and is widely used in scenarios requiring high-efficiency energy utilization and low carbon emissions. However, the 9H-class combined cycle generator set generates flue gas during operation, which directly pollutes the environment and requires purification. A search revealed existing technology (Announcement No.: CN202322182029.3) for a generator set flue gas purification device. The document describes that "through the installation of a first baffle, a second baffle, a first through-pipe, a spray head, a mesh, and a perforated plate, the generator set exhaust gas enters the left-side space separated by the first baffle, and is then purified by the first through-pipe inside..." The system allows for airflow through the first, second, and third connecting pipes, thereby altering the airflow direction and reducing noise. A perforated plate is installed in another space separated from the housing by the second partition, providing secondary noise reduction during generator exhaust. A spray nozzle is installed between the first and second partitions; the spray system automatically operates during generator operation, dissolving dust particles in the water mist as the exhaust gas passes through it, and then discharging them outside the housing through the wastewater outlet. This device effectively filters dust particles and reduces noise, minimizing environmental pollution. However, in existing technologies, when flue gas flows through the connecting pipes, particulate matter and dust impurities in the flue gas easily adhere to the pipe walls, causing blockages. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, a 9H-class combined cycle generator flue gas purification device is provided to solve the problem that, in existing technologies, when flue gas flows through a pipe, particulate matter and dust impurities in the flue gas easily adhere to the pipe wall, causing blockage.

[0004] To achieve the above objectives, a flue gas purification device for a 9H-class combined cycle generator set is provided, comprising: a purification unit, wherein a desulfurization chamber and a denitrification chamber are disposed on the inner side of the purification unit.

[0005] A connecting frame plate is welded to the left end of the purification unit. A limit plate is connected to the inner side of the connecting frame plate via a spring support. A flue gas filter box is welded to the left side of the limit plate. A filter screen is inserted into the inner side of the flue gas filter box. A fixed cover plate is screwed to the upper end of the flue gas filter box. A vibration motor is installed on the surface of the fixed cover plate. The right side of the flue gas filter box is connected to the desulfurization chamber via a ventilation hose. Spray nozzles are spirally distributed on the inner wall of the desulfurization chamber. Alkali delivery pipes are connected to the spray nozzles through a spiral liquid guiding chamber. An electric heater is installed around the outer side of the denitrification chamber. A denitrification catalyst plate is inserted into the inner wall of the denitrification chamber.

[0006] Furthermore, an air preheater is provided on the upper surface of the purification unit, and the rear end of the air preheater is connected to the desulfurization chamber through a connecting pipe.

[0007] Furthermore, the front end of the air preheater is connected to the denitrification chamber via a delivery pipe, and the upper and lower ends of the air preheater are respectively provided with a flue gas outlet and a flue gas inlet.

[0008] Furthermore, the flue gas inlet is connected to the upper cavity of the denitrification chamber, the lower end of the desulfurization chamber is connected to a waste liquid pipe, and a servo motor is installed on the left side of the air preheater.

[0009] Furthermore, a drive shaft is provided in the middle of the desulfurization chamber, a propeller is mounted on the surface of the drive shaft, and a servo motor is connected to the upper end of the drive shaft.

[0010] Furthermore, a limiting plate is slidably connected in the groove on the front side of the connecting frame plate, and the left port of the flue gas filter box is connected to the generator set exhaust pipe.

[0011] Furthermore, a waste storage box is screwed onto the lower surface of the flue gas filter box, and a waste discharge groove is provided at the lower left end of the filter screen.

[0012] The beneficial effects of this utility model are as follows: The flue gas purification device for the 9H-class combined cycle generator set utilizes two sets of filter screens in the flue gas filter box to filter the flue gas before it is purified and then passed into the purification device. The flue gas filter box is driven by a vibration motor to vibrate mechanically, causing particulate matter and dust impurities on the filter screens to vibrate and fall off. This facilitates the pre-filtration and removal of particulate impurities in the flue gas of the 9H-class combined cycle generator set, avoids the inconvenience of cleaning caused by residual particulate impurities in the purification device, and facilitates the self-cleaning of particulate impurities on the filter screens. This ensures smooth flue gas flow during the operation of the purification device. The alkaline solution sprayed in the desulfurization chamber and the denitrification catalyst plate in the denitrification chamber react and purify the sulfides and nitrates in the flue gas of the 9H-class combined cycle generator set, ensuring that the flue gas treated by the purification device meets emission standards and reduces the environmental pollution caused by the flue gas of the 9H-class combined cycle generator set. Attached Figure Description

[0013] Figure 1 This is a front view structural schematic diagram of the flue gas purification device for a 9H-class combined cycle generator set according to an embodiment of this utility model.

[0014] Figure 2 This is a front view cross-sectional structural diagram of the flue gas purification device for a 9H-class combined cycle generator set according to an embodiment of this utility model.

[0015] Figure 3 This is a front view cross-sectional diagram of the connection structure of the flue gas filter box according to an embodiment of the present utility model.

[0016] Figure 4 This is a three-dimensional structural diagram of the flue gas filter box according to an embodiment of the present utility model.

[0017] In the diagram: 1. Purification unit; 11. Connecting frame plate; 12. Alkaline infusion pipe; 13. Waste liquid pipe; 14. Spiral liquid guiding chamber; 15. Nozzle; 16. Desulfurization chamber; 17. Denitrification chamber; 18. Electric heater; 19. Spring support; 2. Flue gas filter box; 21. Filter screen plate; 22. Ventilation hose; 23. Storage box; 24. Vibration motor; 25. Fixed cover plate; 26. Waste discharge trough; 27. Limiting plate; 3. Generator set exhaust pipe; 4. Air preheater; 41. Connecting pipe; 42. Conveying pipe; 43. Flue gas inlet; 44. Flue gas outlet; 5. Propeller; 51. Servo motor; 52. Drive shaft; 6. Denitrification catalyst plate. Detailed Implementation

[0018] Reference Figures 1 to 4 As shown, this utility model provides a flue gas purification device for a 9H-class combined cycle generator set, including: a purification body 1, with a desulfurization chamber 16 and a denitrification chamber 17 disposed inside the purification body 1.

[0019] A connecting frame plate 11 is welded to the left end of the purification unit 1. A limit plate 27 is connected to the inner side of the connecting frame plate 11 via a spring support 19. A flue gas filter box 2 is welded to the left side of the limit plate 27. A filter screen plate 21 is inserted into the inner side of the flue gas filter box 2. A fixed cover plate 25 is screwed to the upper end of the flue gas filter box 2. A vibration motor 24 is installed on the surface of the fixed cover plate 25. The right side of the flue gas filter box 2 is connected to the desulfurization chamber 16 via a ventilation hose 22. Spray nozzles 15 are spirally distributed on the inner wall of the desulfurization chamber 16. The spray nozzles 15 are connected to an alkaline infusion pipe 12 via a spiral liquid guiding chamber 14. An electric heater 18 is installed around the outer side of the denitrification chamber 17. A denitrification catalyst plate 6 is inserted into the inner wall of the denitrification chamber 17.

[0020] When the 9H-class combined cycle generator set is running, the flue gas generated is introduced into the flue gas filter box 2 through the generator set exhaust pipe 3. After being filtered by the filter screen 21 to remove particulate matter and dust impurities, the flue gas flows to the desulfurization chamber 16 of the purification unit 1. The rotating propeller 5 drives the incoming flue gas to flow upward in a spiral. The flow causes the nozzles 15 on the wall of the desulfurization chamber 16 to spray alkaline solution to react with the sulfides in the flue gas. After the desulfurization reaction, the flue gas flows through the air preheater 4 to the denitrification chamber 17, where it reacts with the denitrification catalyst plate 6 in the denitrification chamber 17 at a certain temperature, reducing nitrogen oxides (NOx) into nitrogen and water. The gas then flows into the heat exchange tubes of the air preheater 4 and is finally discharged from the flue gas outlet 44 of the air preheater 4, completing the flue gas purification process of the 9H-class combined cycle generator set.

[0021] In this embodiment, an air preheater 4 is provided on the upper surface of the purification unit 1. The rear end of the air preheater 4 is connected to the desulfurization chamber 16 through a connecting pipe 41. The front end of the air preheater 4 is connected to the denitrification chamber 17 through a conveying pipe 42. The upper and lower ends of the air preheater 4 are respectively provided with a flue gas outlet 44 and a flue gas inlet 43.

[0022] As a preferred implementation, the air preheater 4 facilitates the recovery of the flue gas after the desulfurization chamber 16 has undergone heating and reaction, allowing heat exchange between the flue gas after heating and reaction in the desulfurization chamber 16 and the flue gas flowing out of the desulfurization chamber 16, thereby reducing heat loss and achieving energy saving. The flue gas outlet 44 and flue gas inlet 43 facilitate the flow of the flue gas after heating and reaction in the desulfurization chamber 16 into the heat exchange tubes inside the air preheater 4.

[0023] In this embodiment, the flue gas inlet 43 is connected to the upper cavity of the denitrification chamber 17, the lower end of the desulfurization chamber 16 is connected to the waste liquid pipe 13, and a servo motor 51 is provided on the left side of the air preheater 4. A drive shaft 52 is provided in the middle of the inner side of the desulfurization chamber 16, a propeller 5 is mounted on the surface of the drive shaft 52, and a servo motor 51 is shaft-connected to the upper end of the drive shaft 52.

[0024] As a preferred implementation, the waste liquid pipe 13 facilitates the discharge of reactants generated in the desulfurization chamber 16. The servo motor 51 drives the propeller 5 to rotate via the drive shaft 5, causing the flue gas in the desulfurization chamber 16 to circulate in a spiral motion, increasing the flow path of the flue gas and allowing the flue gas to fully react with the alkaline solution sprayed by the nozzle 15 to remove sulfides.

[0025] In this embodiment, a limiting plate 27 is slidably connected in the groove on the front side of the connecting frame plate 11, and a generator set exhaust pipe 3 is connected to the left port of the flue gas filter box 2. A miscellaneous storage box 23 is screwed onto the lower surface of the flue gas filter box 2, and a miscellaneous discharge groove 26 is opened at the lower left end of the filter screen plate 21.

[0026] As a preferred embodiment, the flue gas filter box 2 can be movably connected to the connecting frame plate 11 through the connecting frame plate 11 to avoid mechanical vibration of the flue gas filter box 2, thereby removing particulate impurities attached to the surface of the filter screen plate 21 inside the flue gas filter box 2, preventing particulate impurities from clogging the mesh and affecting the normal flow of flue gas, facilitating the pre-filtration and removal of particulate impurities in the flue gas of the 9H-class combined cycle generator set, avoiding residual particulate impurities in the purification device that cause cleaning inconvenience, and at the same time facilitating the self-cleaning of particulate impurities on the filter screen plate 21.

[0027] This utility model's 9H-class combined cycle generator flue gas purification device effectively solves the problem in existing technologies where particulate matter and dust impurities in the flue gas easily adhere to the pipe wall and cause blockage when the flue gas is flowing in the pipe. It facilitates pre-filtration to remove particulate impurities from the flue gas of the 9H-class combined cycle generator, avoids inconvenience caused by residual particulate impurities in the purification device, facilitates the self-cleaning of particulate impurities on the filter screen, ensures smooth flue gas flow during the operation of the purification device, ensures that the flue gas treated by the purification device meets emission standards, reduces the environmental pollution caused by the flue gas of the 9H-class combined cycle generator, and is applicable to 9H-class combined cycle generator flue gas purification devices.

Claims

1. A flue gas purification device for a 9H-class combined cycle generator set, comprising: A purification unit (1), wherein a desulfurization chamber (16) and a denitrification chamber (17) are provided on the inner side of the purification unit (1), characterized in that: The purification body (1) has a connecting frame plate (11) welded to the left side. The inner side of the connecting frame plate (11) is connected to a limiting plate (27) via a spring support (19). The left side of the limiting plate (27) is welded to a flue gas filter box (2). A filter screen plate (21) is inserted into the inner side of the flue gas filter box (2). A fixed cover plate (25) is screwed to the upper end of the flue gas filter box (2). A vibration motor (24) is installed on the surface of the fixed cover plate (25). The right side of the flue gas filter box (2) is connected to the desulfurization chamber (16) via a ventilation hose (22). The inner wall of the desulfurization chamber (16) is spirally distributed with nozzles (15). The nozzles (15) are connected to an alkaline infusion pipe (12) via a spiral liquid guiding chamber (14). An electric heater (18) is installed around the outer side of the denitrification chamber (17). A denitrification catalyst plate (6) is inserted into the inner wall of the denitrification chamber (17).

2. The flue gas purification device for a 9H-class combined cycle generator set according to claim 1, characterized in that, An air preheater (4) is provided on the upper surface of the purification body (1), and the rear end of the air preheater (4) is connected to the desulfurization chamber (16) through a connecting pipe (41).

3. The flue gas purification device for a 9H-class combined cycle generator set according to claim 2, characterized in that, The front end of the air preheater (4) is connected to the denitrification chamber (17) through a conveying pipe (42). The air preheater (4) is provided with a flue gas outlet (44) and a flue gas inlet (43) at its upper and lower ends, respectively.

4. The flue gas purification device for a 9H-class combined cycle generator set according to claim 3, characterized in that, The flue gas inlet (43) is connected to the upper cavity of the denitrification chamber (17), the lower end of the desulfurization chamber (16) is connected to the waste liquid pipe (13), and a servo motor (51) is provided on the left side of the air preheater (4).

5. The flue gas purification device for a 9H-class combined cycle generator set according to claim 1, characterized in that, A drive shaft (52) is provided in the middle of the inner side of the desulfurization chamber (16). A propeller (5) is installed on the surface of the drive shaft (52), and a servo motor (51) is connected to the upper end of the drive shaft (52).

6. The flue gas purification device for a 9H-class combined cycle generator set according to claim 1, characterized in that, A limiting plate (27) is slidably connected in the groove on the front side of the connecting frame plate (11), and a generator set exhaust pipe (3) is connected to the left port of the flue gas filter box (2).

7. The flue gas purification device for a 9H-class combined cycle generator set according to claim 1, characterized in that, A storage box (23) is screwed onto the lower surface of the flue gas filter box (2), and a discharge groove (26) is provided at the lower left end of the filter screen plate (21).

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