Flue gas desulfurization and denitrification spray tower

Abstract

The utility model relates to flue gas treatment technical field, and disclose a kind of flue gas desulfurization and denitrification spray tower, including including spray tower, the spray tower is from lower to upper by air inlet section, shell and exhaust section, the left side of air inlet section is provided with air inlet pipe, the left side of air inlet section is fixedly connected with drain valve, the right side of air inlet section is provided with filter assembly, the right side of filter assembly is provided with spray assembly;The left and right inner walls of shell are respectively fixedly connected with plug rail, and the linkage structure (L type threaded rod+butterfly nut limit) of plug rail type filler frame and detachable sealing plate is linked, the quick disassembly of filler layer is realized, and only external operation is needed when replacing, entire filler frame can be extracted horizontally, personnel is not needed to enter spray tower internal operation, eliminate the security risk that traditional filler replacement needs aerial work or in-depth tower, shorten maintenance time simultaneously, reduce labor intensity, especially applicable to the working condition of frequent replacement filler.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, specifically to a flue gas desulfurization and denitrification spray tower. Background Technology

[0002] Spray towers exist as a type of environmental waste gas treatment equipment. Based on their working principle, they are divided into circulating water spray towers, alkaline spray towers, and acid spray towers. Spray towers are generally composed of a tower body, a spraying system, and packing. The packing is the core and important component of the spray tower, used for the purification of flue gas, and is the direct factor determining the effectiveness of the spray tower.

[0003] As the packing material is used for a longer period of time, its effectiveness gradually decreases. Therefore, it is important to replace the packing material. However, in the existing technology, when replacing the packing material, the staff have to go deep into the spray tower, which poses a great safety hazard. Therefore, there is an urgent need for a flue gas desulfurization and denitrification spray tower. Utility Model Content

[0004] The purpose of this utility model is to provide a flue gas desulfurization and denitrification spray tower to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a flue gas desulfurization and denitrification spray tower, comprising a spray tower, the spray tower being composed of an air inlet section, an outer shell and an exhaust section from bottom to top, an air inlet pipe being provided on the left side of the air inlet section, a drain valve being fixedly connected to the left side of the air inlet section, a filter assembly being provided on the right side of the air inlet section, and a spray assembly being provided on the right side of the filter assembly; The left and right inner walls of the outer shell are respectively fixedly connected to the insertion rails, and the insertion rails are inserted into the insertion rails. The front of the insertion rails is fixedly connected to the sealing plate, and the two ends of the front of the sealing plate are fixedly connected to the lugs. The ends of the two lugs that are far apart from each other are rotatably connected to the L-shaped threaded rods. Each L-shaped threaded rod is threaded with a butterfly cap. The two ends of the outer shell are fixedly connected to the fixing plates, and the top of each fixing plate is provided with a groove.

[0006] Preferably, an L-shaped jet pipe is fixedly connected to the left inner wall of the air intake section, a support rod is fixedly connected to the top of the jet pipe, and an air distribution hood is fixedly connected to the top of the support rod.

[0007] Preferably, a limiting groove is provided on the back of both fixing plates, and the limiting groove is adapted to the nut of the butterfly cap.

[0008] Preferably, the filter assembly includes a filter box, the front of which has a slot, into which a filter screen is inserted, and a mounting plate is fixedly connected to the front of the filter screen. The mounting plate is fixedly connected to the filter box by bolts, and a first water pump is fixedly connected to the top of the filter box. The input end and output end of the first water pump are respectively fixedly connected to a first water pump pipe and a first water drain pipe.

[0009] Preferably, one end of the first water pump pipe is connected to and extends into the air intake section, and one end of the first drain pipe is fixedly connected to the filter box.

[0010] Preferably, the spray assembly includes a second water pump, the input end and the output end of the second water pump are both fixedly connected to a second water suction pipe and a second drain pipe, the left side of the second drain pipe is fixedly connected to two liquid outlet pipes, the bottom of each liquid outlet pipe is fixedly connected to multiple dispersion pipes arranged in a ring array, and the bottom of each dispersion pipe is provided with multiple nozzles.

[0011] Preferably, one end of the second water pump is fixedly connected to the filter box, and the left sides of the two liquid outlet pipes pass through the air inlet section and the air outlet section respectively and extend into their interiors.

[0012] Compared with the prior art, the beneficial effects achieved by this utility model are: First, this utility model achieves rapid disassembly and assembly of the packing layer through the linkage structure of the insert-rail packing frame and the detachable sealing plate (L-shaped threaded rod + butterfly nut limit). During replacement, only external operation is required to horizontally pull out the entire packing frame, without the need for personnel to enter the spray tower for operation. This eliminates the safety hazards of traditional packing replacement requiring high-altitude operations or deep into the tower, while shortening maintenance time and reducing labor intensity. It is especially suitable for working conditions where packing is frequently replaced.

[0013] Secondly, the combined design of the L-shaped jet pipe and the gas distribution hood in this utility model evenly disperses the incoming air to the cross-section of the tower body. Combined with the gas-liquid countercurrent contact of the packing layer, it significantly improves the uniformity of gas-liquid mixing, avoids gas short-circuiting, and enhances the efficiency of desulfurization and denitrification reactions. Through the graded treatment of pre-spraying in the inlet section (the second water pumping pipe connects to the inlet section) and deep spraying in the exhaust section (the second drain pipe extends to the exhaust section), combined with the annular array dispersion pipe and multi-nozzle design, it achieves gradient purification of flue gas. The pre-spraying stage can remove large particulate pollutants, and the deep spraying stage further captures small particles and residual pollutants to ensure that emissions meet standards. The removable filter screen in the filter box effectively intercepts particulate matter in the spray liquid, prevents nozzle clogging, ensures the long-term stable operation of the spraying system, and extends the equipment maintenance cycle. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a top view of the rear of the outer shell of this utility model. Figure 3 This is a front-section sectional view of the left side of the three-dimensional structure of this utility model; Figure 4 This is a schematic diagram of the front cross-section structure of this utility model.

[0015] The components are as follows: 1. Spray tower; 11. Air inlet section; 12. Outer shell; 13. Exhaust section; 14. Air inlet pipe; 15. Drain valve; 16. Insert rail; 17. Packing rack; 18. Sealing plate; 19. Support lug; 20. Threaded rod; 21. Butterfly cap; 22. Fixing plate; 23. Jet pipe; 24. Air distribution hood; 25. Filter box; 26. Filter screen; 27. First water pump; 28. First water suction pipe; 29. ​​First drain pipe; 30. Second water pump; 31. Second water suction pipe; 32. Second drain pipe; 33. Liquid outlet pipe; 34. Dispersion pipe; 35. Spray head. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] This utility model provides the following technical solution: Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 A flue gas desulfurization and denitrification spray tower includes a spray tower 1, which is composed of an air inlet section 11, an outer shell 12 and an exhaust section 13 from bottom to top. An air inlet pipe 14 is provided on the left side of the air inlet section 11, and a drain valve 15 is fixedly connected to the left side of the air inlet section 11. A filter assembly is provided on the right side of the air inlet section 11, and a spray assembly is provided on the right side of the filter assembly. The left and right inner walls of the outer casing 12 are respectively fixedly connected to the insertion rails 16. The insertion rails 16 are inserted into the packing frame 17. The front of the packing frame 17 is fixedly connected to the sealing plate 18. The two ends of the front of the sealing plate 18 are fixedly connected to the lugs 19. The ends of the two lugs 19 that are far apart from each other are rotatably connected to the L-shaped threaded rods 20. Each L-shaped threaded rod 20 is threaded with a butterfly cap 21. The two ends of the outer casing 12 are fixedly connected to the fixing plates 22. Each fixing plate 22 has a groove on its top.

[0018] Through the above technical solution, the overall structure of the spray tower is divided into three parts from bottom to top: the air inlet section, the outer shell, and the exhaust section. The air inlet section 11 has an air inlet pipe 14 on the left side for gas entry, and a drain valve 15 for discharging the spray liquid is fixedly connected to the left side. The right side also includes a filter assembly and a spray assembly to form a circulating spray. The inner walls of the outer shell 12 are fixed with rails 16 for inserting and connecting packing frames 17 to support the packing material. The packing material on the packing frame 17 increases the gas-liquid contact area, achieving desulfurization and denitrification reactions. The front of the packing frame 17 is connected to a sealing plate 18, and both ends of the sealing plate 18 are rotatably connected to L-shaped threaded rods 20 via lugs 19. The threaded rods 20 are threaded... The butterfly cap 21 is a butterfly nut used for fastening. The top of the fixing plates 22 at both ends of the outer shell 12 has grooves. When fixing the sealing plate 18, rotate the threaded rod 20 to make it overlap into the groove of the fixing plate 22, and rotate the butterfly cap 21 to tighten it until it is tightened, thereby fixing the sealing plate 18 and the packing frame 17. When replacing the packing on the packing frame 17, turn the butterfly cap 21 in the opposite direction and turn the threaded rod 20 out of the groove. Pull the sealing plate 18 to pull the packing frame 17 out of the outer shell 12, and the packing can be replaced. Therefore, when replacing the packing, it is not necessary for the staff to go deep into the spray tower, which greatly reduces the safety hazards.

[0019] An L-shaped jet pipe 23 is fixedly connected to the left inner wall of the air intake section 11. A support rod is fixedly connected to the top of the jet pipe 23, and an air distribution hood 24 is fixedly connected to the top of the support rod.

[0020] Through the above technical solution, an L-shaped jet pipe 23, a support rod, and an air distribution hood 24 are added to the air intake section 11. The L-shaped jet pipe 23 is fixed to the left inner wall of the air intake section 11 and connected to the air intake pipe 14. The top is connected to the umbrella-shaped or conical air distribution hood 24 through the support rod. The air distribution hood 24 evenly disperses the air intake to the cross section of the spray tower 1, avoids gas short circuit, and improves gas-liquid contact efficiency.

[0021] Both fixing plates 22 have limit grooves on their back sides, which are adapted to the nuts of the butterfly caps 21.

[0022] Through the above technical solution, the back of the fixing plates 22 at both ends of the outer shell 12 is provided with limiting grooves that are adapted to the shape of the nut of the butterfly cap 21. When the butterfly cap 21 is screwed into the limiting groove, the threaded rod 20 is prevented from sliding out of the groove by the limiting of the nut and the groove, thereby enhancing the fixing reliability of the packing frame 17.

[0023] The filter assembly includes a filter box 25. A slot is provided on the front of the filter box 25, and a filter screen 26 is inserted into the slot. A mounting plate is fixedly connected to the front of the filter screen 26. The mounting plate is fixedly connected to the filter box 25 by bolts. A first water pump 27 is fixedly connected to the top of the filter box 25. The input end and output end of the first water pump 27 are respectively fixedly connected to a first water pumping pipe 28 and a first water draining pipe 29.

[0024] One end of the first water pumping pipe 28 is connected to the air intake section 11 and extends into it, and one end of the first drain pipe 29 is fixedly connected to the filter box 25.

[0025] Through the above technical solution, a slot is opened on the front of the filter box 25, and a filter screen 26 is inserted inside. The filter screen 26 is fixed to the filter box 25 with bolts by the mounting plate. The input end of the first water pump 27 is connected to the first water suction pipe 28 to draw liquid from the air intake section 11, and the output end is connected to the first drain pipe 29 to supply water to the filter box 25, filtering particulate matter in the spray liquid and preventing the nozzle from clogging. The filter screen 26 can be quickly replaced by installing the mounting plate with bolts, which is convenient for maintenance. The steps of liquid in the air intake section → first water suction pipe → first water pump → first drain pipe → filter box → liquid are realized.

[0026] The spray assembly includes a second water pump 30. The input and output ends of the second water pump 30 are fixedly connected to a second water suction pipe 31 and a second drain pipe 32. The left side of the second drain pipe 32 is fixedly connected to two liquid outlet pipes 33. The bottom of each liquid outlet pipe 33 is fixedly connected to multiple dispersion pipes 34 arranged in a ring array. The bottom of each dispersion pipe 34 is provided with multiple nozzles 35.

[0027] One end of the second water pumping pipe 31 is fixedly connected to the filter box 25, and the left sides of the two liquid outlet pipes 33 pass through the air inlet section 11 and the exhaust section 13 respectively and extend into their interiors.

[0028] Through the above technical solution, the input end of the second water pump 30 is connected to the second water pumping pipe 31 to draw liquid from the filter box 25, and the output end is connected to the second drain pipe 32. The left end of the second drain pipe 32 is fixedly connected to two liquid outlet pipes 33. The bottom of the liquid outlet pipe 33 is provided with multiple annular array dispersion pipes 34, and each dispersion pipe 34 is provided with multiple nozzles 35 at the bottom. The filtered spray liquid is transported to the nozzles 35 by the second water pump 30 to form atomized droplets, which fully contact and react with the gas. The spraying steps are realized by filter box → second water pumping pipe → second water pump → second drain pipe → liquid outlet pipe → dispersion pipe → nozzle. Spraying is set in both the air inlet section 11 and the exhaust section 13 to realize multi-stage desulfurization and denitrification. The air inlet section 11 is pre-treated, and the exhaust section 13 is deeply treated.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flue gas desulfurization and denitrification spray tower, comprising a spray tower (1), characterized in that: The spray tower (1) consists of an air inlet section (11), an outer shell (12) and an exhaust section (13) from bottom to top. An air inlet pipe (14) is provided on the left side of the air inlet section (11), and a drain valve (15) is fixedly connected to the left side of the air inlet section (11). A filter assembly is provided on the right side of the air inlet section (11), and a spray assembly is provided on the right side of the filter assembly. The left and right inner walls of the outer shell (12) are respectively fixedly connected to the insert rails (16), and the insert rails (16) are connected to the packing frame (17). The front of the packing frame (17) is fixedly connected to the sealing plate (18). The two ends of the front of the sealing plate (18) are fixedly connected to the lugs (19). The ends of the two lugs (19) that are far apart from each other are rotatably connected to the L-shaped threaded rods (20). Each threaded rod (20) is threadedly connected to the butterfly cap (21). The two ends of the outer shell (12) are fixedly connected to the fixing plates (22). Each fixing plate (22) has a groove on its top. The left inner wall of the air intake section (11) is fixedly connected to the L-shaped jet pipe (23). The top of the jet pipe (23) is fixedly connected to the support rod. The top of the support rod is fixedly connected to the air distribution cover (24). The filter assembly includes a filter box (25), a slot is provided on the front of the filter box (25), a filter screen (26) is inserted into the slot, an mounting plate is fixedly connected to the front of the filter screen (26), the mounting plate is fixedly connected to the filter box (25) by bolts, a first water pump (27) is fixedly connected to the top of the filter box (25), and the input end and output end of the first water pump (27) are respectively fixedly connected to a first water pumping pipe (28) and a first water draining pipe (29). The spray assembly includes a second water pump (30), the input end and the output end of the second water pump (30) are fixedly connected to a second water pump pipe (31) and a second drain pipe (32), the left side of the second drain pipe (32) is fixedly connected to two liquid outlet pipes (33), the bottom of each liquid outlet pipe (33) is fixedly connected to multiple dispersion pipes (34) arranged in a ring array, and the bottom of each dispersion pipe (34) is provided with multiple nozzles (35).

2. The flue gas desulfurization and denitrification spray tower according to claim 1, characterized in that: Both of the fixing plates (22) have a limiting groove on their back sides, which is adapted to the nut of the butterfly cap (21).

3. The flue gas desulfurization and denitrification spray tower according to claim 1, characterized in that: One end of the first water pump (28) is connected to the air intake section (11) and extends into it, and one end of the first drain pipe (29) is fixedly connected to the filter box (25).

4. The flue gas desulfurization and denitrification spray tower according to claim 1, characterized in that: One end of the second water pumping pipe (31) is fixedly connected to the filter box (25), and the left sides of the two liquid outlet pipes (33) pass through the air inlet section (11) and the exhaust section (13) respectively and extend into their interiors.

Images