Wet dedusting countercurrent spraying system

Abstract

The utility model provides a wet dust removal countercurrent spraying system, which comprises a countercurrent spraying system and an air guide mechanism which are positioned in a dust removal tower, the air guide mechanism is positioned below the countercurrent spraying system, the countercurrent spraying system comprises a spraying main pipe positioned in the dust removal tower, a plurality of spraying branch pipes are arranged on the spraying main pipe, and the spraying branch pipes are communicated with the air guide mechanism. And a plurality of nozzles with different lengths are arranged on the spraying branch pipes. Compared with the prior art, the utility model has the following beneficial effects: through the countercurrent spraying design, the spraying liquid is dispersed into fine liquid drops through the nozzles and drops, the flue gas is contacted with the spraying liquid from bottom to top in a countercurrent manner for mass transfer, the gas-liquid contact area is large, and the dust removal effect is good.

Description

Technical Field

[0001] The utility model relates to a wet dust removal countercurrent spraying system, belonging to the field of wet dust removal equipment. Background Art

[0002] Wet dust removal mainly uses water washing to bring dust in the flue gas into the water, thereby achieving dust removal. At present, there are various wet dust removal processes on the market, and there are various water washing devices, some in the form of water curtains and some in the form of spray guns, but there is a problem in all of them, that is, the contact area between the flue gas and the water is not enough. Many dust removal effects are not good because of this reason. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a wet dust removal countercurrent spraying system.

[0004] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0005] A wet dust removal countercurrent spray system comprises a countercurrent spray system and an air guide mechanism located inside a dust removal tower, wherein the air guide mechanism is located below the countercurrent spray system, and the countercurrent spray system comprises a spray main pipe located inside the dust removal tower, wherein the spray main pipe is provided with a plurality of spray branch pipes, and the spray branch pipes are provided with a plurality of nozzles of different lengths.

[0006] Furthermore, the air guide mechanism includes a plurality of guide plates fixed inside the dust removal tower, the side tops of the guide plates are connected and fixed to the inner wall of the dust removal tower through fixing rods, a curved air flow channel is formed between two adjacent guide plates, and the bottom of the guide plates is provided with a liquid breaking assembly that cooperates with the curved air flow channel.

[0007] Furthermore, the air guiding mechanism also includes a diverter rack installed inside the dust removal tower, and a flared air inlet slot is respectively opened on both sides of the bottom of the diverter rack, and the top of the flared air inlet slot is connected to a wide-mouth air outlet slot, and the top of the wide-mouth air outlet slot is connected to the air delivery slot located on the top of the diverter rack through a plurality of air outlet holes, and the air delivery slot corresponds to a plurality of the curved air flow channels.

[0008] Furthermore, the air guide mechanism also includes an air guide ring fixed inside the dust removal tower, and the middle of the air guide ring is respectively provided with air guide inclined grooves, and the bottom ends of several of the guide plates are located inside the air guide inclined grooves.

[0009] Furthermore, an arc-shaped movable groove cooperating with the liquid crushing assembly is provided inside the air guide ring, and a flow guide slope is provided on the top of the air guide ring.

[0010] Furthermore, the liquid crushing assembly includes a fixing frame fixed to the bottom of the guide plate, a rotating shaft is movably connected between the two fixing frames, a rotating cylinder is fixed on the rotating shaft, a plurality of air guide blades are evenly fixed on the circumferential outer surface of the rotating cylinder, and a plurality of crushing blocks are fixed on the air guide blades.

[0011] Furthermore, a booster ring is provided inside the dust removal tower, and the booster ring is located between the countercurrent spray system and the air guide mechanism.

[0012] Furthermore, the nozzle, the spray main pipe and the spray branch pipe are all connected via flanges.

[0013] Furthermore, a support frame and a plurality of support plates are installed on the inner top of the dust removal tower, the spray main pipe is installed on the support frame, and the spray branch pipe is installed on the support plate.

[0014] Beneficial effects of the utility model:

[0015] The utility model adopts the countercurrent spraying design, the spraying liquid is dispersed into fine droplets through the nozzle and falls, the smoke contacts the spraying liquid in a countercurrent manner from bottom to top for mass transfer, the gas-liquid contact area is large, and the dust removal effect is good;

[0016] The utility model independently designs the nozzle arrangement according to the spatial structure in the tower, and realizes full coverage of the smoke area in the tower without dead angle spraying through the staggered design of the multi-layer spray system;

[0017] The utility model arranges an enhancement ring at the bottom of the countercurrent spray system to prevent smoke short circuit, while increasing the contact area between steam and water, increasing the liquid-gas ratio and improving the dust removal efficiency.

[0018] The utility model adopts the design of the air guide mechanism. During the operation of the device, the smoke flowing in the dust removal tower can be diverted and guided by the air guide mechanism, so that the smoke can be evenly contacted with the spray liquid, and the smoke can be fully contacted with the spray liquid. That is, the smoke will first enter the two expanded air inlet slots during the rising process, and be transported to a plurality of air outlet holes through the wide-mouth air outlet slots. The air outlet holes cooperate with a plurality of curved air flow channels, so that the output smoke can evenly enter the curved air flow channels for slow flow. At this time, the spray liquid sprayed down can be combined with the slowly flowing smoke, so as to achieve a good dust reduction effect.

[0019] The utility model prevents smoke short circuit caused by dead corners on the tower wall through the design of the efficiency enhancement ring.

[0020] The utility model adopts the design of liquid crushing components. During the process of spraying liquid to reduce dust, the combined spraying liquid will fall naturally. During the process of the spraying liquid flowing in the curved air flow channel, it will flow and fall along the guide plate. Synchronously, the rising airflow will drive a plurality of air guide blades to rotate. The rotation of the air guide blades will also bring a plurality of crushing blocks to rotate. The rotation of the air guide blades and the plurality of crushing blocks will impact and crush the falling mixed liquid, so that the mixed liquid will form water mist again, and then combine with the smoke for a second time, so that the spraying liquid can be fully utilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of a wet dust removal countercurrent spraying system of the utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of a wet dust removal countercurrent spray system of the utility model;

[0024] Figure 3 It is a schematic diagram of spray coverage of a countercurrent spray system of a wet dust removal countercurrent spray system of the utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of a flow divider frame of a wet dust removal countercurrent spray system of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of a liquid crushing component of a wet dust removal countercurrent spraying system of the utility model;

[0027] Figure 6 The utility model is a schematic diagram of the air guide ring structure of a wet dust removal countercurrent spray system.

[0028] In the figure, 1. dust removal tower; 2. efficiency enhancement ring; 3. countercurrent spray system; 4. support frame; 5. support plate; 6. nozzle; 7. spray main pipe; 8. spray branch pipe; 9. diverter frame; 10. expanded air inlet slot; 11. wide-mouth air outlet slot; 12. air outlet hole; 13. air delivery slot; 14. guide plate; 15. fixing rod; 16. liquid crushing assembly; 17. fixing frame; 18. rotating shaft; 19. rotating cylinder; 20. air guide blade; 21. crushing block; 22. air guide ring; 23. air guide inclined slot; 24. arc movable slot; 25. guide slope; 26. curved air flow channel; 27. flange. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-Figure 6 The utility model provides a technical solution of a wet dust removal countercurrent spray system, a wet dust removal countercurrent spray system, comprising a countercurrent spray system 3 and an air guide mechanism located inside a dust removal tower 1, wherein the air guide mechanism is located below the countercurrent spray system 3, the countercurrent spray system 3 comprises a spray main pipe 7 located inside the dust removal tower 1, a plurality of spray branch pipes 8 are arranged on the spray main pipe 7, and a plurality of nozzles 6 of different lengths are arranged on the spray branch pipe 8; and the countercurrent spray system 3 can be designed with multi-layer spraying according to the dust removal efficiency, and each layer of the spray system is rotated in the opposite direction by 15°, so that the upper and lower layers are misaligned and then covered, so as to ensure that the flue gas area is fully covered without dead angle spraying, and the dust removal effect is good, and the positions of the spray main pipe 7, the spray branch pipe 8 and the nozzle 6 are reasonably arranged, and the diameters of the spray main pipes 7 and the spray branch pipes 8 are calculated according to the flow rate of each nozzle 6, so as to ensure that the flow rate of each pipeline is balanced, the outlet flow rate and pressure of each nozzle 6 are balanced, and the spraying effect is guaranteed.

[0031] See also Figure 2 , Figure 4 , Figure 6The air guide mechanism includes a plurality of guide plates 14 fixed inside the dust removal tower 1, the side tops of the guide plates 14 are connected and fixed to the inner wall of the dust removal tower 1 through fixing rods 15, and a curved air flow channel 26 is formed between two adjacent guide plates 14, and a liquid crushing assembly 16 that cooperates with the curved air flow channel 26 is provided at the bottom of the guide plates 14. The air guide mechanism also includes a diverter frame 9 installed inside the dust removal tower 1, and a flared air inlet groove 10 is respectively opened on both sides of the bottom of the diverter frame 9, and the top of the flared air inlet groove 10 is connected with a wide-mouth air outlet groove 11, and the top of the wide-mouth air outlet groove 11 is connected to the air delivery groove 13 located at the top of the diverter frame 9 through a plurality of air outlet holes 12, and the air delivery groove 13 corresponds to the plurality of curved air flow channels 26, and the air guide mechanism also includes an air guide ring 22 fixed inside the dust removal tower 1, and an air guide inclined groove is respectively opened in the middle of the air guide ring 22 23, the bottom ends of several of the guide plates 14 are located inside the wind guide inclined groove 23, the inside of the wind guide ring 22 is provided with an arc-shaped movable groove 24 matched with the liquid crushing component 16, and the top of the wind guide ring 22 is provided with a guide slope 25; through the design of the wind guide mechanism, during the operation of the device, the flue gas flowing in the dust removal tower 1 can be diverted and guided by the wind guide mechanism, so that the flue gas can be evenly contacted with the spray liquid, so that the flue gas can be fully contacted with the spray liquid, that is, the flue gas will first enter the two expanded air inlet grooves 10 during the rising process, and will be transported to several air outlet holes 12 through the wide-mouth air outlet grooves 11, and the air outlet holes 12 are matched with several curved air flow channels 26, so that the output flue gas can evenly enter the curved air flow channel 26 for slow flow, at this time, the spray liquid sprayed down can be combined with the slowly flowing flue gas, so as to achieve a good dust reduction effect.

[0032] See also Figure 2 and Figure 5 The liquid breaking component 16 includes a fixing frame 17 fixed at the bottom of the guide plate 14, and a rotating shaft 18 is movably connected between the two fixing frames 17. A rotating cylinder 19 is fixed on the rotating shaft 18, and a plurality of air guide blades 20 are evenly fixed on the circumferential outer surface of the rotating cylinder 19, and a plurality of crushing blocks 21 are fixed on the air guide blades 20; through the design of the liquid breaking component 16, in the process of spraying liquid dust reduction, the combined spraying liquid will fall naturally, and in the process of the spraying liquid flowing in the curved air flow channel 26, it will flow and fall along the guide plate 14, and synchronously, the rising airflow will drive the plurality of air guide blades 20 to rotate, and the air guide blades 20 will rotate with the plurality of crushing blocks 21 while rotating, and the rotation of the air guide blades 20 and the plurality of crushing blocks 21 will impact and crush the falling mixed liquid, so that the mixed liquid forms water mist again, and then combines with the flue gas for the second time, so that the spraying liquid can be fully utilized.

[0033] See also Figure 2 The dust removal tower 1 is provided with an enhancement ring 2 inside, and the enhancement ring 2 is located between the countercurrent spray system 3 and the air guide mechanism; the enhancement ring 2 is designed to prevent the existence of a dead angle at the tower wall from causing flue gas short circuit.

[0034] See also Figure 2-Figure 3 The nozzle 6, the spray main pipe 7 and the spray branch pipe 8 are all connected by a flange 27. This connection method is convenient for later disassembly and maintenance.

[0035] See also Figure 3 A support frame 4 and a plurality of support plates 5 are installed on the inner top of the dust removal tower 1, the spray main pipe 7 is installed on the support frame 4, and the spray branch pipe 8 is installed on the support plate 5; through the design of the support frame 4 and the support plate 5, a support system can be provided for the countercurrent spray system 3.

[0036] When in use, the flue gas floats up from the bottom of the dust removal tower 1, and the countercurrent spray system 3 selects a suitable liquid-gas ratio through the flow of the flue gas, calculates the amount of slurry, and reasonably arranges the position of the nozzle 31 to ensure that the spray liquid can completely cover the flue gas cross section (such as Figure 2 As shown), there is no short circuit. In order to avoid dead corners on the tower wall, the spray liquid is dispersed into fine droplets through a number of nozzles 6 and falls down. The flue gas contacts the spray liquid in a countercurrent manner from bottom to top for mass transfer, so that the gas-liquid contact area is large, achieving a good dust removal effect. In addition, an enhancement ring 2 is set at a position about 1m below the countercurrent spray system 3 to prevent the dead corners on the tower wall from causing flue gas short circuit.

[0037] During the above operation, the flue gas flowing in the dust removal tower 1 can be diverted and guided by the air guide mechanism, so that the flue gas can be evenly contacted with the spray liquid, so that the flue gas can be fully contacted with the spray liquid, that is, the flue gas will first enter the two expanded air inlet slots 10 during the rising process, and will be transported to the plurality of air outlet holes 12 through the wide-mouth air outlet slots 11. The air outlet holes 12 cooperate with the plurality of curved air flow channels 26, so that the output flue gas can evenly enter the curved air flow channels 26 for slow flow. At this time, the spray liquid sprayed down can be combined with the slowly flowing flue gas, so as to achieve a good dust reduction effect.

[0038] In the process of spraying liquid to reduce dust, the combined spray liquid will fall naturally. In the process of flowing in the curved air flow channel 26, the spray liquid will flow and fall along the guide plate 14. Synchronously, the rising airflow will drive the plurality of air guide blades 20 to rotate. The rotation of the air guide blades 20 and the plurality of broken blocks 21 will cause the falling mixed liquid to impact and break, so that the mixed liquid will form water mist again, and then combine with the flue gas for the second time, so that the spray liquid can be fully utilized.

[0039] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A wet dust removal countercurrent spray system, characterized in that: The invention comprises a countercurrent spray system (3) and an air guide mechanism located inside a dust removal tower (1), wherein the air guide mechanism is located below the countercurrent spray system (3), and the countercurrent spray system (3) comprises a spray main pipe (7) located inside the dust removal tower (1), wherein the spray main pipe (7) is provided with a plurality of spray branch pipes (8), and wherein the spray branch pipes (8) are provided with a plurality of nozzles (6) of different lengths.

2. A wet dust removal countercurrent spray system according to claim 1, characterized in that: The air guide mechanism comprises a plurality of guide plates (14) fixed inside the dust removal tower (1); the top of the side of the guide plate (14) is connected and fixed to the inner wall of the dust removal tower (1) via a fixing rod (15); a curved air flow channel (26) is formed between two adjacent guide plates (14); and a liquid breaking component (16) matching the curved air flow channel (26) is provided at the bottom of the guide plate (14).

3. A wet dust removal countercurrent spraying system according to claim 2, characterized in that: The air guide mechanism also includes a flow distribution frame (9) installed inside the dust removal tower (1), and a flared air inlet groove (10) is respectively opened on both sides of the bottom of the flow distribution frame (9), and the top of the flared air inlet groove (10) is connected to a wide-mouth air outlet groove (11), and the top of the wide-mouth air outlet groove (11) is connected to an air delivery groove (13) located at the top of the flow distribution frame (9) through a plurality of air outlet holes (12), and the air delivery groove (13) corresponds to a plurality of the curved air flow channels (26).

4. A wet dust removal countercurrent spraying system according to claim 3, characterized in that: The air guide mechanism also includes an air guide ring (22) fixed inside the dust removal tower (1), and the middle of the air guide ring (22) is provided with air guide inclined grooves (23), and the bottom ends of a plurality of the guide plates (14) are located inside the air guide inclined grooves (23).

5. A wet dust removal countercurrent spraying system according to claim 4, characterized in that: The interior of the air guide ring (22) is provided with an arc-shaped movable groove (24) that matches the liquid crushing component (16), and the top of the air guide ring (22) is provided with a flow guide inclined surface (25).

6. A wet dust removal countercurrent spraying system according to claim 5, characterized in that: The liquid crushing assembly (16) comprises a fixing frame (17) fixed to the bottom of the guide plate (14); a rotating shaft (18) is movably connected between the two fixing frames (17); a rotating cylinder (19) is fixed on the rotating shaft (18); a plurality of air guide blades (20) are evenly fixed on the circumferential outer surface of the rotating cylinder (19); and a plurality of crushing blocks (21) are fixed on the air guide blades (20).

7. A wet dust removal countercurrent spraying system according to claim 6, characterized in that: The dust removal tower (1) is provided with an enhancement ring (2) inside, and the enhancement ring (2) is located between the countercurrent spray system (3) and the air guide mechanism.

8. A wet dust removal countercurrent spraying system according to claim 7, characterized in that: The nozzle (6), the spray main pipe (7) and the spray branch pipe (8) are all connected via a flange (27).

9. A wet dust removal countercurrent spraying system according to claim 8, characterized in that: A support frame (4) and a plurality of support plates (5) are installed on the inner top of the dust removal tower (1); the spray main pipe (7) is installed on the support frame (4); and the spray branch pipe (8) is installed on the support plate (5).

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