Boiler tail gas desulfurization device for power plant

Abstract

The utility model discloses a boiler tail gas desulfurization device for a power plant, which relates to the technical field of flue gas purification and comprises a box body, a gas inlet arranged in the center of one side of the box body, a guide outlet arranged on one side opposite to the gas inlet, a second gas wheel arranged in the center of the inside of the gas inlet, a bottom shaft arranged at the bottom of the second gas wheel and a bearing arranged on the bottom surface of the inside of the box body. A first driving shaft is arranged on the top face of the second air wheel and penetrates through the top face of the box body, a supporting box is arranged at the top of the box body, and a treatment box is arranged at the top of the supporting box. According to the boiler tail gas desulfurization device for the power plant, the second gas wheel is arranged in the box body, after flue gas enters the box body, the second gas wheel is pushed to rotate, the first gas wheel is driven to rotate synchronously in the same direction, and a gas pressure difference is formed in the box body and the treatment box, so that the flue gas enters the treatment box from the box body; the rotation directions of the first gas wheel and the desulfurization column are opposite, so that the flue gas penetrates through the desulfurization column to react with the adsorbent more sufficiently, and the utilization rate of the adsorbent is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas purification, in particular to a boiler tail gas desulfurization device for a power plant. Background Art

[0002] Thermal power generation refers to a method of generating electricity by converting the heat energy generated by the combustion of combustibles into electrical energy through a power generation device. Chemical raw gas made from coal, natural gas, etc. contains a certain amount of sulfide, which will cause serious air pollution if not removed. In use, hydrogen sulfide can cause corrosion of equipment and pipelines and catalyst poisoning, resulting in increased production costs and affecting product quality. Therefore, the boiler of the power plant must desulfurize the tail gas before discharging it.

[0003] In the existing technology, semi-dry desulfurization is achieved by spraying or atomizing adsorbents (such as activated carbon, calcium oxide, etc.) into the flue gas to react with pollutants such as hydrogen sulfide. Due to the large base of exhaust gas emissions, the utilization rate of the adsorbent is low and the desulfurization cost is high.

[0004] Therefore, a boiler tail gas desulfurization device for a power plant is provided to improve the utilization rate of the adsorbent in the semi-dry desulfurization process. Utility Model Content

[0005] Therefore, the purpose of the utility model is to provide a boiler tail gas desulfurization device for a power plant to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a boiler exhaust gas desulfurization device for a power plant, comprising a box body, the box body is a hollow structure, an air inlet is arranged at the center of one side of the box body, an outlet is arranged on the side opposite to the air inlet, the centers of the air inlet and the outlet are located on the same horizontal line, a second air wheel is arranged at the inner center of the air inlet, a bottom shaft is arranged at the bottom of the second air wheel, a bearing is arranged on the inner bottom surface of the box body, the bottom shaft is connected to the bearing, a first drive shaft is arranged on the top surface of the second air wheel, the first drive shaft passes through the top surface of the box body, and a bearing is arranged at the connection between the first drive shaft and the box body; a support box is arranged on the top of the box body, a processing box is arranged on the top of the support box, and the processing box is a hollow structure.

[0007] As a preferred solution of a boiler exhaust gas desulfurization device for a power plant described in the utility model, the interior of the support box is hollow, and the first drive shaft is located inside the support box; a bottom plate is provided at the bottom of the processing box, and a tray is provided inside the bottom plate, and the other end of the first drive shaft is connected to the bottom center of the tray.

[0008] As a preferred solution of a boiler exhaust gas desulfurization device for a power plant described in the utility model, the tray includes a chassis and a reversal plate, the chassis and the reversal plate are in contact with each other, a cavity is formed inside the tray, a first gear ring is provided on the outside of the chassis, the outside of the first gear ring is fixedly connected to the bottom plate, the inside of the first gear ring is rotatably connected to a rotating table, and the bottom of the rotating table is connected to the first drive shaft.

[0009] As a preferred solution of the boiler exhaust gas desulfurization device for a power plant described in the utility model, a planetary gear set is arranged on the top of the rotating table, the planetary gear set is meshed with the first ring gear, a connecting rod is arranged at the top center of the planetary gear set, and a reverse driving wheel is arranged at the other end of the connecting rod, and the size of the reverse driving wheel is smaller than the size of the planetary gear set.

[0010] As a preferred solution of the boiler exhaust gas desulfurization device for a power plant described in the utility model, a second gear ring is arranged on the outer side of the reversal disk, a reversal driven wheel is arranged downward from the top of the reversal disk, the reversal driven wheel is meshed with the second gear ring, the other end of the reversal driven wheel is meshed with the reversal driving wheel, and the size of the reversal driven wheel is the same as that of the reversal driving wheel.

[0011] As a preferred solution of the boiler exhaust gas desulfurization device for a power plant described in the utility model, a second drive shaft is arranged at the top center of the turntable, the position of the second drive shaft on the turntable corresponds to the position of the first drive shaft on the turntable, the size of the second drive shaft is the same as the size of the first drive shaft, the other end of the second drive shaft passes through the reversal disk, and a bearing is arranged at the connection with the reversal disk.

[0012] As a preferred solution of the boiler exhaust gas desulfurization device for a power plant described in the utility model, a desulfurization column is arranged on the top of the tray, the desulfurization column is located inside the processing box, the desulfurization column is an annular structure, and the top of the desulfurization column is in contact with the inner side of the top plate of the processing box; a first air wheel is arranged on the top of the second driving shaft, a top shaft is arranged above the first air wheel, one end of the top shaft is connected to the top of the processing box, a bearing is arranged at the connection, and the first air wheel is located at the inner center of the annular part of the desulfurization column.

[0013] As a preferred solution of the boiler exhaust gas desulfurization device for a power plant described in the utility model, an inlet is arranged on the top of the processing box, the inlet is located inside the annular structure of the desulfurization column, the outlet is exactly the same in shape and size as the inlet, and an air guide pipe is arranged between the outlet and the inlet.

[0014] As a preferred solution of the boiler exhaust gas desulfurization device for a power plant described in the utility model, an air inlet pipe is arranged on the outside of the air inlet, a boost pipe is arranged at the other end of the air inlet pipe, and an air supply pipe is arranged at the other end of the boost pipe; the diameter of the air inlet is the same as the height of the second air wheel.

[0015] As a preferred solution of the utility model for a boiler tail gas desulfurization device for a power plant, the cross-section of the processing box is a regular polygonal structure, an exhaust port is arranged on part of the non-positive side surface of the processing box, and an exhaust pipe is arranged outside the exhaust port.

[0016] Beneficial effects of the utility model:

[0017] 1. The utility model provides a boiler tail gas desulfurization device for a power plant. A second air wheel is arranged in a box body. After the flue gas enters the box body, the second air wheel is driven to rotate, which drives the first air wheel to rotate synchronously in the same direction, thereby forming an air pressure difference between the box body and the processing box, so that the flue gas enters the processing box from the box body.

[0018] 2. The utility model provides a boiler tail gas desulfurization device for a power plant. By setting a reversing disk, the reversing disk is driven to reverse when the second gas turbine rotates, thereby driving the desulfurization column to reverse.

[0019] 3. The utility model provides a boiler tail gas desulfurization device for a power plant. By rotating the first gas turbine and the desulfurization column in opposite directions, the flue gas passes through the desulfurization column and reacts with the adsorbent more fully, thereby improving the utilization rate of the adsorbent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 This is a schematic diagram of the overall structure of a boiler tail gas desulfurization device for a power plant according to the utility model;

[0022] Figure 2 This is a partial structural diagram of a boiler tail gas desulfurization device for a power plant according to the utility model. Figure 1 ;

[0023] Figure 3 This is a partial structural diagram of a boiler tail gas desulfurization device for a power plant according to the utility model. Figure 2 ;

[0024] Figure 4 This is a schematic diagram of the internal structure of a treatment box of a boiler tail gas desulfurization device for a power plant according to the utility model;

[0025] Figure 5 This is a schematic diagram of the internal structure of a desulfurization column of a boiler tail gas desulfurization device for a power plant according to the utility model;

[0026] Figure 6This is a schematic diagram of the internal structure of a support box of a boiler tail gas desulfurization device for a power plant according to the utility model;

[0027] Figure 7 This is a cross-sectional view of a casing of a boiler tail gas desulfurization device for a power plant according to the utility model;

[0028] Figure 8 This is a schematic diagram of the internal structure of a tray for a boiler tail gas desulfurization device for a power plant according to the utility model. Figure 1 ;

[0029] Fig. 9 This is a schematic diagram of the internal structure of a tray for a boiler tail gas desulfurization device for a power plant according to the utility model. Figure 2 ;

[0030] Fig.10 This is a schematic diagram of the internal structure of a tray for a boiler tail gas desulfurization device for a power plant according to the utility model. Figure 3 .

[0031] Description of reference numerals:

[0032] 1. Box body; 11. Air inlet; 12. Air outlet; 13. Support box; 2. Processing box; 21. Bottom plate; 22. First air wheel; 23. Top shaft; 24. Inlet; 25. Exhaust port; 3. Exhaust pipe; 4. Second air wheel; 41. Bottom shaft; 42. Bearing; 43. First drive shaft; 44. Second drive shaft; 5. Tray; 51. Chassis; 511. First ring gear; 512. Planetary gear set; 513. Connecting rod; 514. Reverse drive wheel; 515. Turntable; 52. Reverse disk; 521. Second ring gear; 522. Reverse driven wheel; 53. Desulfurization column; 6. Air guide pipe; 7. Air inlet pipe; 71. Boost pipe; 72. Air supply pipe. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0034] Reference Figure 1-10The utility model provides a boiler tail gas desulfurization device for a power plant, which includes a box body 1, which is a hollow structure. An air inlet 11 is arranged at the center of one side of the box body 1, and an outlet 12 is arranged on the opposite side of the air inlet 11. The centers of the air inlet 11 and the outlet 12 are located on the same horizontal line. A second air wheel 4 is arranged at the inner center of the air inlet 11, and a bottom shaft 41 is arranged at the bottom of the second air wheel 4. A bearing 42 is arranged on the inner bottom surface of the box body 1, and the bottom shaft 41 is connected to the bearing 42. A first driving shaft 43 is arranged on the top surface of the second air wheel 4, and the first driving shaft 43 passes through the top surface of the box body 1. A bearing 42 is arranged at the connection between the first driving shaft 43 and the box body 1; a supporting box 13 is arranged on the top of the box body 1, and a processing box 2 is arranged on the top of the supporting box 13. The processing box 2 is a hollow structure.

[0035] Specifically, the box body 1 is a hollow structure, an air inlet 11 is provided at the center of one side of the box body 1, and an outlet 12 is provided on the opposite side of the air inlet 11. The centers of the air inlet 11 and the outlet 12 are located on the same horizontal line, and the two ends of the box body 1 are connected through the air inlet 11 and the outlet 12; a second air wheel 4 is provided at the inner center of the air inlet 11, a bottom shaft 41 is provided at the bottom of the second air wheel 4, a bearing 42 is provided on the inner bottom surface of the box body 1, and the bottom shaft 41 is connected to the bearing 42, and a first drive shaft 43 is provided on the top surface of the second air wheel 4, and the first drive shaft 43 penetrates the box body 1 The top surface of the box 1 is provided with a bearing 42 at the connection between the first drive shaft 43 and the box body 1. The second air wheel 4 is vertically installed inside the box body 1 through the bottom shafts 41 at both ends of the second air wheel 4 and the first drive shaft 43, and the second air wheel 4 can rotate independently through the bearings 42 at both ends. The second air wheel 4 is an inverted frustum, and the second air wheel 4 is driven to rotate by the flue gas entering the outlet 12 from the air inlet 11, thereby driving the first drive shaft 43 to rotate synchronously; a support box 13 is provided on the top of the box body 1, and a treatment box 2 is provided on the top of the support box 13, and the treatment box 2 is supported by the support box 13.

[0036] The interior of the support box 13 is hollow, and the first drive shaft 43 is located inside the support box 13; a bottom plate 21 is provided at the bottom of the processing box 2, and a tray 5 is provided inside the bottom plate 21, and the other end of the first drive shaft 43 is connected to the bottom center of the tray 5.

[0037] Specifically, the interior of the support box 13 is hollow, and the first drive shaft 43 is located inside the support box 13, and the rotating first drive shaft 43 is isolated by the support box 13; a bottom plate 21 is provided at the bottom of the processing box 2, and a tray 5 is provided inside the bottom plate 21, and the other end of the first drive shaft 43 is connected to the bottom center of the tray 5, and the rotation of the first drive shaft 43 drives the tray 5 to move independently of the bottom plate 21.

[0038] The tray 5 includes a chassis 51 and a reversal disk 52. The chassis 51 and the reversal disk 52 are in contact with each other to form a cavity inside the tray 5. A first gear ring 511 is provided on the outer side of the chassis 51. The outer part of the first gear ring 511 is fixedly connected to the bottom plate 21. The inner part of the first gear ring 511 is rotatably connected to a rotating table 515. The bottom of the rotating table 515 is connected to the first driving shaft 43.

[0039] Specifically, the tray 5 includes a chassis 51 and a reversal disk 52, and the chassis 51 and the reversal disk 52 are in contact with each other to form a cavity inside the tray 5, and the tray 5 is in contact with the edges of the chassis 51 and the reversal disk 52; the outside of the first gear ring 511 is fixedly connected to the bottom plate 21, and the inside of the first gear ring 511 is rotatably connected to a rotating table 515, and the bottom of the rotating table 515 is connected to the first drive shaft 43, and the rotation of the first drive shaft 43 makes the rotating table 515 rotate independently of the first gear ring 511 and the processing box 2.

[0040] A planetary gear set 512 is arranged on the top of the rotating table 515, and the planetary gear set 512 is meshed with the first ring gear 511. A connecting rod 513 is arranged at the top center of the planetary gear set 512, and a reverse driving wheel 514 is arranged at the other end of the connecting rod 513. The size of the reverse driving wheel 514 is smaller than that of the planetary gear set 512.

[0041] Specifically, a planetary gear set 512 is provided on the top of the rotating table 515, and the planetary gear set 512 is meshed with the first ring gear 511. Through the rotation of the rotating table 515, the planetary gear set 512 revolves around the first ring gear 511 and rotates at the same time; a connecting rod 513 is provided at the top center of the planetary gear set 512, and a reverse driving wheel 514 is provided at the other end of the connecting rod 513. The size of the reverse driving wheel 514 is smaller than that of the planetary gear set 512, and the reverse driving wheel 514 is caused to rotate synchronously with the planetary gear set 512 through the connecting rod 513.

[0042] A second gear ring 521 is arranged on the outer side of the reversal disk 52, and a reversal driven wheel 522 is arranged downward from the top of the reversal disk 52. The reversal driven wheel 522 is meshed with the second gear ring 521, and the other end of the reversal driven wheel 522 is meshed with the reversal driving wheel 514. The size of the reversal driven wheel 522 is the same as that of the reversal driving wheel 514.

[0043] Specifically, by meshing the reverse driving wheel 514 with the reverse driven wheel 522 , the reverse driving wheel 514 drives the reverse driven wheel 522 to reverse during rotation, thereby driving the second gear ring 521 to reverse, thereby making the reverse disk 52 and the rotating table 515 rotate in opposite directions.

[0044] A second drive shaft 44 is arranged at the top center of the rotating table 515. The position of the second drive shaft 44 on the rotating table 515 corresponds to the position of the first drive shaft 43 on the rotating table 515. The size of the second drive shaft 44 is the same as that of the first drive shaft 43. The other end of the second drive shaft 44 passes through the reversal disk 52, and a bearing 42 is arranged at the connection with the reversal disk 52.

[0045] Specifically, when the rotating table 515 is driven to rotate by the first driving shaft 43, the second driving shaft 44 on the rotating table 515 rotates synchronously, ensuring that the rotation direction and speed of the first driving shaft 43 and the second driving shaft 44 are the same, and the reversing disk 52 rotates independently through the bearing 42.

[0046] A desulfurization column 53 is arranged on the top of the tray 5. The desulfurization column 53 is located inside the processing box 2. The desulfurization column 53 is an annular structure. The top of the desulfurization column 53 is in contact with the inner side of the top plate of the processing box 2. A first air wheel 22 is arranged on the top of the second driving shaft 44. A top shaft 23 is arranged above the first air wheel 22. One end of the top shaft 23 is connected to the top of the processing box 2. A bearing 42 is arranged at the connection. The first air wheel 22 is located at the inner center of the annular structure of the desulfurization column 53.

[0047] Specifically, a desulfurization column 53 is arranged on the top of the tray 5, and the desulfurization column 53 is located inside the processing box 2. The desulfurization column 53 is an annular structure. The top of the desulfurization column 53 contacts the inner side of the top plate of the processing box 2, and an adsorbent is placed inside the desulfurization column 53. The side walls of the desulfurization column 53 are all made of breathable materials, and the annular top of the desulfurization column 53 is sealed by the top plate of the processing box 2; a first air wheel 22 is arranged on the top of the second drive shaft 44, and a top shaft 23 is arranged above the first air wheel 22. One end of the top shaft 23 is connected to the top of the processing box 2, and a bearing 42 is arranged at the connection. The first air wheel 22 is a truncated cone shape, and the first air wheel 22 is vertically installed by the second drive shaft 44 and the top shaft 23, and the second drive shaft 44 can drive the first air wheel 22 to rotate independently from the processing box 2 through the bearing 42; the first air wheel 22 is located at the inner center of the annular ring of the desulfurization column 53, and a negative pressure zone is formed inside the desulfurization column 53 through the rotation of the first air wheel 22.

[0048] An inlet 24 is provided on the top of the processing box 2 , and the inlet 24 is located inside the annular structure of the desulfurization column 53 . The outlet 12 has exactly the same shape and size as the inlet 24 , and an air guide pipe 6 is provided between the outlet 12 and the inlet 24 .

[0049] Specifically, an inlet 24 is provided on the top of the processing box 2, and the outlet 12 is exactly the same in shape and size as the inlet 24. An air duct 6 is provided between the outlet 12 and the inlet 24, and the flue gas inside the box body 1 is introduced into the interior of the processing box 2 through the air duct 6; the inlet 24 is located in the annular interior of the desulfurization column 53, so that when the first air wheel 22 rotates, the gas inside the air duct 6 can be introduced into the annular interior of the desulfurization column 53.

[0050] An air intake pipe 7 is arranged outside the air intake port 11 , a boost pipe 71 is arranged at the other end of the air intake pipe 7 , and an air supply pipe 72 is arranged at the other end of the boost pipe 71 ; the diameter of the air intake port 11 is the same as the height of the second air wheel 4 .

[0051] Specifically, the flue gas flows through the boost pipe 71 through the air supply pipe 72. Since the diameters of the two ends of the boost pipe 71 are different, the flue gas from the air supply pipe 72 enters the air intake pipe 7 with a higher air pressure.

[0052] The cross section of the processing box 2 is a regular polygonal structure. An exhaust port 25 is provided on a part of the non-positive side surface of the processing box 2 , and an exhaust pipe 3 is provided outside the exhaust port 25 .

[0053] Specifically, the flue gas is desulfurized by flowing from the annular inner part of the desulfurization column 53 to the annular outer part of the desulfurization column 53. The gas pressure flowing out of the desulfurization column 53 is reduced by setting the processing box 2 as a regular polyhedron. The exhaust port 25 is provided on some non-positive sides of the processing box 2 to provide a larger buffer space for the flue gas. The desulfurized flue gas is discharged into the main exhaust duct through the exhaust pipe 3.

[0054] During use, the flue gas flows from the air supply pipe 72 into the boost pipe 71, and then flows into the box body 1 through the air intake pipe 7, so that the pressure of the flue gas is further increased, and the speed at which the flue gas enters the box body 1 is increased. After the flue gas enters the box body 1, the gas flow rate drives the second air wheel 4 to rotate. While the second air wheel 4 rotates, it drives the first air wheel 22 to rotate in the annular interior of the desulfurization column 53, forming a negative pressure in the annular interior of the desulfurization column 53, and the flue gas in the box body 1 is sucked into the annular interior of the desulfurization column 53 through the air guide pipe 6; while the second air wheel 4 rotates, it also drives the desulfurization column 53 to reverse. After the flue gas enters the annular interior of the desulfurization column 53, the centrifugal force generated by the rotation of the first air wheel 22 pushes the flue gas toward the outer desulfurization column 53. The desulfurization column 53 rotates in the opposite direction to the first air wheel 22, so that the flue gas is more fully in contact with the adsorbent in the desulfurization column 53. Under the action of the residual temperature of the flue gas, the desulfurization reaction is more complete. After the flue gas flows out of the desulfurization column 53, it is collected in the main exhaust pipe through the exhaust pipe 3.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A boiler tail gas desulfurization device for a power plant, comprising a housing (1), characterized in that: The box body (1) is a hollow structure. An air inlet (11) is arranged at the center of one side of the box body (1). An outlet (12) is arranged on the side opposite to the air inlet (11). The centers of the air inlet (11) and the outlet (12) are located on the same horizontal line. A second air wheel (4) is arranged at the center of the air inlet (11). A bottom shaft (41) is arranged at the bottom of the second air wheel (4). A bearing (42) is arranged on the bottom surface of the box body (1). The bottom shaft (41) is connected to the bearing (42). A first drive shaft (43) is arranged on the top surface of the second air wheel (4). The first drive shaft (43) passes through the top surface of the box body (1). A bearing (42) is arranged at the connection between the first drive shaft (43) and the box body (1). A support box (13) is arranged on the top of the box body (1). A processing box (2) is arranged on the top of the support box (13). The processing box (2) is a hollow structure.

2. A boiler tail gas desulfurization device for a power plant according to claim 1, characterized in that: The interior of the support box (13) is hollow, and the first drive shaft (43) is located inside the support box (13); a bottom plate (21) is provided at the bottom of the processing box (2), a tray (5) is provided inside the bottom plate (21), and the other end of the first drive shaft (43) is connected to the bottom center of the tray (5).

3. A boiler tail gas desulfurization device for a power plant according to claim 2, characterized in that: The tray (5) comprises a chassis (51) and a reversing disk (52); the chassis (51) and the reversing disk (52) are in contact with each other, forming a cavity inside the tray (5); a first gear ring (511) is arranged on the outside of the chassis (51); the outside of the first gear ring (511) is fixedly connected to the bottom plate (21); the inside of the first gear ring (511) is rotatably connected to a rotating platform (515); the bottom of the rotating platform (515) is connected to a first driving shaft (43).

4. A boiler tail gas desulfurization device for a power plant according to claim 3, characterized in that: A planetary gear set (512) is arranged on the top of the rotating platform (515), the planetary gear set (512) meshes with the first ring gear (511), a connecting rod (513) is arranged at the top center of the planetary gear set (512), and a counter-acting driving wheel (514) is arranged at the other end of the connecting rod (513), and the size of the counter-acting driving wheel (514) is smaller than the size of the planetary gear set (512).

5. A boiler tail gas desulfurization device for a power plant according to claim 4, characterized in that: A second gear ring (521) is arranged on the outer side of the reversing disk (52), a reversing driven wheel (522) is arranged downwardly on the top of the reversing disk (52), the reversing driven wheel (522) meshes with the second gear ring (521), the other end of the reversing driven wheel (522) meshes with the reversing driving wheel (514), and the size of the reversing driven wheel (522) is the same as that of the reversing driving wheel (514).

6. A boiler tail gas desulfurization device for a power plant according to claim 5, characterized in that: A second drive shaft (44) is arranged at the top center of the rotating table (515); the position of the second drive shaft (44) on the rotating table (515) corresponds to the position of the first drive shaft (43) on the rotating table (515); the size of the second drive shaft (44) is the same as the size of the first drive shaft (43); the other end of the second drive shaft (44) passes through the reversing disk (52); a bearing (42) is arranged at the connection with the reversing disk (52).

7. A boiler tail gas desulfurization device for a power plant according to claim 6, characterized in that: A desulfurization column (53) is arranged on the top of the tray (5), the desulfurization column (53) is located inside the processing box (2), the desulfurization column (53) is an annular structure, and the top of the desulfurization column (53) is in contact with the inner side of the top plate of the processing box (2); a first air wheel (22) is arranged on the top of the second drive shaft (44), a top shaft (23) is arranged above the first air wheel (22), one end of the top shaft (23) is connected to the top of the processing box (2), a bearing (42) is arranged at the connection, and the first air wheel (22) is located at the inner center of the annular structure of the desulfurization column (53).

8. A boiler tail gas desulfurization device for a power plant according to claim 7, characterized in that: The top of the treatment box (2) is provided with an inlet (24), the inlet (24) is located inside the annular structure of the desulfurization column (53), the outlet (12) and the inlet (24) are completely the same in shape and size, and an air guide pipe (6) is provided between the outlet (12) and the inlet (24).

9. The boiler tail gas desulfurization device for a power plant according to claim 1, characterized in that: An air intake pipe (7) is arranged outside the air intake port (11), a boost pipe (71) is arranged at the other end of the air intake pipe (7), and an air supply pipe (72) is arranged at the other end of the boost pipe (71); the diameter of the air intake port (11) is the same as the height of the second air wheel (4).

10. The boiler tail gas desulfurization device for a power plant according to claim 1, characterized in that: The cross section of the processing box (2) is a regular polygonal structure; an exhaust port (25) is provided on part of the non-positive side surface of the processing box (2); and an exhaust pipe (3) is provided outside the exhaust port (25).

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