Boiler flue gas desulfurization tower

Abstract

The utility model relates to a boiler flue gas desulfurization tower which is characterized in that the bottom of a tower body is fixedly communicated with a flue gas inlet pipe, the top of the tower body is fixedly communicated with a flue gas exhaust pipe, the inner wall of the tower body is fixedly connected with a plurality of baffle plates which are arranged in a staggered manner along the vertical direction, and the upper end of each baffle plate is integrally provided with an adsorption tank; an overflow plate is integrally arranged on each adsorption tank, a water supply tank is arranged on the outer side of the tower body, the bottom of the tower body is fixedly communicated with the inlet end of a drainage pipe, the outlet end of the drainage pipe extends into the water supply tank, treatment liquid is stored in the water supply tank, and a water supply pump is fixedly mounted at the bottom of the water supply tank; the outlet end of the water supply pump fixedly communicates with the inlet end of a spraying pipe, the outlet end of the spraying pipe fixedly communicates with a spraying head, the support is coaxially and rotationally connected with a rotating shaft, and the cross rod is fixedly connected with a cleaning rod movably connected with the upper end of the filter screen plate in an abutting mode. And the upper end of the rotating shaft is coaxially and fixedly connected with a driven bevel gear matched with the driving device.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler flue gas treatment devices, in particular to a boiler flue gas desulfurization tower. Background Art

[0002] The desulfurization tower is a tower-type equipment for desulfurization of industrial waste gas. The desulfurization tower was originally built with granite and was most widely used. It uses the principle of water film desulfurization and dust removal. It is also called granite water film desulfurization dust collector, or granite water film desulfurization dust collector. By preparing different dust removal agents, it can achieve the effect of dust removal and desulfurization at the same time.

[0003] At present, small desulfurization towers are often used in the treatment of industrial boiler exhaust gas to deal with sulfur dioxide in the boiler exhaust gas. Most of the treatment methods are to desulfurize the flue gas by spraying with countercurrent flue gas, but the desulfurization rate of this desulfurization method is relatively low, so multiple layers of spraying layers need to be set up, which not only increases the production cost, but also has limited improvement in the desulfurization rate. Therefore, the present application proposes a boiler flue gas desulfurization tower to facilitate efficient desulfurization treatment. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a boiler flue gas desulfurization tower, and the technical solution to the problem is to include a tower body, characterized in that the bottom of the tower body is fixedly connected to a smoke inlet pipe, the top of the tower body is fixedly connected to a smoke exhaust pipe, the inner wall of the tower body is fixedly connected to a plurality of baffles arranged in a vertical staggered manner, the upper end of each of the baffles is integrally arranged with an adsorption tank, and each of the adsorption tanks is integrally arranged with an overflow plate, the inner wall of the tower body is coaxially fixedly connected to a bracket located on the upper side of the smoke inlet pipe, the upper end of the bracket is coaxially fixedly connected to a filter screen plate, a water supply tank is arranged on the outside of the tower body, and the bottom of the tower body is fixedly connected to an inlet of a drain pipe. The outlet end of the drainage pipe extends into a water supply tank, in which a treatment liquid is stored, a water supply pump is fixedly installed at the bottom of the water supply tank, the outlet end of the water supply pump is fixedly connected to the inlet end of the spray pipe, the outlet end of the spray pipe passes through the inside of the tower top, the outlet end of the spray pipe is fixedly connected to a spray head, a driving device cooperating with the treatment liquid is arranged at the lower end of the baffle located at the lowermost side among the several baffles, the bracket is coaxially connected to a rotating shaft, the outer edge of the rotating shaft is fixedly connected to a cross bar, the cross bar is fixedly connected to a cleaning rod movably abutted against the upper end of the filter screen plate, and the upper end of the rotating shaft is coaxially fixedly connected to a driven bevel gear cooperating with the driving device.

[0005] Preferably, the driving device includes two support plates which are arranged in front-to-back correspondence and fixedly connected to the baffle plates, the two support plates are commonly rotatably connected to a longitudinal axis, the longitudinal axis is coaxially fixedly connected to a water wheel, the water wheel corresponds to the first overflow plate on its upper side, the lowermost baffle is fixedly connected to a mounting rod, the mounting rod is rotatably connected to a gear shaft, the gear shaft is coaxially fixedly connected to a driving bevel gear meshing with a driven bevel gear, the longitudinal axis is coaxially fixedly connected to a driving pulley, the gear shaft is coaxially fixedly connected to a driven pulley, the driving pulley and the driven pulley are connected by a belt.

[0006] Preferably, a drain pipe is fixedly connected to the bottom of the water supply tank, and a drain valve is installed on the drain pipe.

[0007] Preferably, a mounting frame is fixedly connected to the inner wall of the top of the tower body, and a demister is fixedly mounted on the upper end of the mounting frame.

[0008] Preferably, a plurality of filter holes are evenly distributed on the filter screen plate.

[0009] The beneficial effects of the utility model are:

[0010] 1. When the utility model is in use, the water supply pump can supply the treatment liquid in the water supply tank to the spray head through the spray pipe, so that the treatment liquid is sprayed out from the spray head to facilitate the desulfurization treatment of the flue gas. The treatment liquid sprayed from the spray head will gradually fill the adsorption tank. After the spray liquid fills the adsorption tank, it will overflow from the overflow plate, so that the treatment liquid can form a continuous water curtain in space. Under the joint action of the water curtain, the treatment liquid in the adsorption tank and the treatment liquid sprayed by the spray head, it is ensured that the flue gas is fully in contact with the treatment liquid, thereby greatly improving the desulfurization effect.

[0011] 2. After the flue gas enters the desulfurization tower through the smoke inlet pipe, it will flow upward and first pass through the filter screen for dust removal. The filter screen is evenly distributed with filter holes to evenly disperse the flue gas so that the flue gas can fully contact with the sprayed and overflowed flue gas, and then remove the dust. The flue gas after dust removal continues to flow upward through the baffle, which can increase the residence time of the flue gas in the tower body, so that the flue gas can fully contact with the water curtain and the treatment liquid in the adsorption tank, thereby ensuring the desulfurization effect and greatly improving the desulfurization rate. The present application has a simple structure, is easy to use, and has strong practicality.

[0012] 3. The driving device provided in the present application can use the water curtain formed by the treatment liquid as a power source to drive the rotating shaft, so that the cleaning rod rotates with the rotating shaft, and then the cleaning rod can clean the filter screen to prevent it from being blocked by dust in the smoke. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a full cutaway front view of the utility model.

[0014] Figure 2 It is an enlarged view of area A in the full-section main view of the utility model.

[0015] Figure 3 This is a partial stereoscopic view of the utility model from the first viewing angle.

[0016] Figure 4 It is an enlarged view of area B in the partial stereoscopic view from the first viewing angle of the utility model.

[0017] Figure 5 This is a partial stereoscopic view from the second viewing angle of the utility model.

[0018] Figure 6 This is a partial stereoscopic view of the utility model from the third viewing angle.

[0019] Figure 7 This is a stereoscopic view from the fourth viewing angle of the present invention.

[0020] Reference numerals

[0021] 1. Tower body, 2. Smoke inlet pipe, 3. Smoke exhaust pipe, 4. Baffle, 5. Adsorption tank, 6. Overflow plate, 7. Bracket, 8. Filter screen, 9. Water supply tank, 10. Drain pipe, 11. Water supply pump, 12. Spray pipe, 13. Spray head, 14. Driving device, 15. Rotating shaft, 16. Cross bar, 17. Cleaning rod, 18. Driven bevel gear, 19. Support plate, 20. Longitudinal axis, 21. Water wheel, 22. Mounting rod, 23. Gear shaft, 24. Driving bevel gear, 25. Driving pulley, 26. Driven pulley, 27. Belt, 28. Drain pipe, 29. Drain valve, 30. Mounting frame, 31. Defogger, 32. Filter hole. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-7 The specific implementation methods of the utility model are further described in detail.

[0023] Embodiment 1, the technical solution is that when the utility model is in use, the water supply pump 11 can supply the treatment liquid in the water supply tank 9 to the spray head 13 through the spray pipe 12, so that the treatment liquid is sprayed out from the spray head 13 to facilitate the desulfurization treatment of the flue gas. The treatment liquid sprayed by the spray head 13 will gradually fill the adsorption tank 5. After the spray liquid fills the adsorption tank 5, it will overflow from the overflow plate 6, so that the treatment liquid can form a continuous water curtain in space. Under the joint action of the water curtain, the treatment liquid in the adsorption tank 5 and the treatment liquid sprayed by the spray head 13, it is ensured that the flue gas is fully in contact with the treatment liquid, thereby greatly improving the desulfurization effect.

[0024] After the flue gas enters the desulfurization tower through the smoke inlet pipe 2, it will flow upwards, first pass through the filter screen 8 for dust removal, and the filter screen 8 is evenly distributed with filter holes 32 to evenly disperse the flue gas, so that the flue gas can fully contact with the sprayed and overflowed flue gas, and then remove the dust from the flue gas. The flue gas after dust removal continues to flow upward through the baffle 4, which can increase the residence time of the flue gas in the tower body 1, so that the flue gas can fully contact with the water curtain and the treatment liquid in the adsorption tank 5, thereby ensuring the desulfurization effect and greatly improving the desulfurization rate. The present application has a simple structure, is easy to use, and has strong practicality. The desulfurized flue gas is finally discharged from the exhaust pipe 3. A demister 31 is arranged on the top of the tower body 1 through the mounting frame 30, which can adsorb the water mist in the flue gas. The demister 31 can use the existing technology and will not be described in detail.

[0025] Embodiment 2, based on embodiment 1, specifically, the water supply tank 9 stores a treatment liquid, which is a slurry for desulfurization. According to production requirements, a slurry suitable for desulfurization in the prior art can be used. When the present application is in use, the treatment liquid is sent to the spray head 13 through the spray pipe 12 under the action of the water supply pump 11, and sprayed from the spray head 13. The sprayed treatment liquid fills each adsorption tank 5 in turn and then flows down from the overflow plate 6, and finally flows back to the water supply tank 9 through the filter screen plate 8 and the drain pipe 10, so as to facilitate the recycling of the treatment liquid. When the treatment liquid has been circulated enough times, the drain valve 29 can be opened to discharge the treatment liquid from the drain pipe 28, and then the drain valve 29 can be closed, and then new treatment liquid can be added to the water supply tank 9 for use.

[0026] Embodiment 3, on the basis of embodiment 1, the driving device 14 provided in the present application can use the water curtain formed by the treatment liquid as a power source to drive the rotating shaft 15, so that the cleaning rod 17 rotates along with the rotating shaft 15, and then the cleaning rod 17 can clean the filter screen 8 to prevent it from being blocked by dust in the smoke. Specifically, after the adsorption tank 5 is filled with the treatment liquid, as the spray head 13 continues to spray the treatment liquid, the treatment liquid in the adsorption tank 5 will overflow from the overflow plate 6 to form a water curtain, which increases the treatment range of the spray liquid. At the same time, the treatment liquid water curtain overflowing from the bottom overflow plate 6 will impact the water wheel 21, causing the water wheel 21 to rotate together with the longitudinal axis 20 on the support plate 19. While the longitudinal axis 20 rotates, it will drive the gear shaft 23 on the mounting rod 22 to rotate through the active pulley 25, the belt 27 and the driven pulley 26. When the gear shaft 23 rotates, the active bevel gear 24 will rotate accordingly, and the rotating shaft 15 on the bracket 7 will be driven to rotate through the driven bevel gear 18. The rotation of the rotating shaft 15 will drive the cross bar 16 to rotate together with the cleaning rod 17, and then the cleaning rod 17 will scrape and clean the filter screen 8. With the wetting effect of the treatment liquid, the dust on the filter screen 8 can be effectively cleaned.

Claims

1. A boiler flue gas desulfurization tower, comprising a tower body (1), characterized in that: The bottom of the tower body (1) is fixedly connected to a smoke inlet pipe (2), the top of the tower body (1) is fixedly connected to a smoke exhaust pipe (3), the inner wall of the tower body (1) is fixedly connected to a plurality of baffles (4) arranged in a vertically staggered manner, the upper end of each baffle (4) is integrally arranged with an adsorption tank (5), and each adsorption tank (5) is integrally arranged with an overflow plate (6), the inner wall of the tower body (1) is coaxially fixedly connected to a bracket (7) located on the upper side of the smoke inlet pipe (2), the upper end of the bracket (7) is coaxially fixedly connected to a filter screen plate (8), a water supply tank (9) is arranged on the outside of the tower body (1), the bottom of the tower body (1) is fixedly connected to the inlet end of a drain pipe (10), the outlet end of the drain pipe (10) extends into the water supply tank (9), and the water supply tank (9) stores a treatment liquid. A water supply pump (11) is fixedly installed at the bottom of the water supply tank (9); the outlet end of the water supply pump (11) is fixedly connected to the inlet end of a spray pipe (12); the outlet end of the spray pipe (12) penetrates into the interior of the tower top; the outlet end of the spray pipe (12) is fixedly connected to a spray head (13); a driving device (14) cooperating with the treatment liquid is arranged at the lower end of the baffle plate (4) located at the lowermost side among the plurality of baffle plates (4); the bracket (7) is coaxially rotatably connected to a rotating shaft (15); the outer edge of the rotating shaft (15) is fixedly connected to a cross bar (16); the cross bar (16) is fixedly connected to a cleaning rod (17) movably abutting against the upper end of the filter screen plate (8); and the upper end of the rotating shaft (15) is coaxially fixedly connected to a driven bevel gear (18) cooperating with the driving device (14).

2. A boiler flue gas desulfurization tower according to claim 1, characterized in that: The driving device (14) comprises two support plates (19) arranged in a front-to-back correspondence and fixedly connected to the baffle plate (4); the two support plates (19) are rotatably connected to a longitudinal axis (20) together; the longitudinal axis (20) is coaxially fixedly connected to a water wheel (21); the water wheel (21) corresponds to a first overflow plate (6) above it; the lowermost baffle plate (4) is fixedly connected to a mounting rod (22); the mounting rod (22) is rotatably connected to a gear shaft (23); the gear shaft (23) is coaxially fixedly connected to a driving bevel gear (24) meshing with a driven bevel gear (18); the longitudinal axis (20) is coaxially fixedly connected to a driving pulley (25); the gear shaft (23) is coaxially fixedly connected to a driven pulley (26); the driving pulley (25) and the driven pulley (26) are connected via a belt (27).

3. A boiler flue gas desulfurization tower according to claim 1, characterized in that: The bottom of the water supply tank (9) is fixedly connected to a water discharge pipe (28), and a water discharge valve (29) is installed on the water discharge pipe (28).

4. A boiler flue gas desulfurization tower according to claim 1, characterized in that: A mounting frame (30) is fixedly connected to the inner wall of the top of the tower body (1), and a demister (31) is fixedly mounted on the upper end of the mounting frame (30).

5. A boiler flue gas desulfurization tower according to claim 1, characterized in that: A plurality of filter holes (32) are evenly distributed on the filter screen plate (8).

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