CN220715390U

CN220715390U - Cyclone plate type SCR denitration tower

Info

Publication number: CN220715390U
Application number: CN202322462832.2U
Authority: CN
Inventors: 刘鹏; 巩玉苹; 程江凯; 林博宇; 王学博; 刘中豪
Original assignee: Shandong Zhenghan Environmental Protection Equipment Co ltd
Current assignee: Shandong Zhenghan Environmental Protection Equipment Co ltd
Priority date: 2023-09-12
Filing date: 2023-09-12
Publication date: 2024-04-05
Anticipated expiration: 2033-09-12

Abstract

The embodiment of the utility model provides a cyclone plate type SCR denitration tower, and relates to the technical field of denitration towers. This board-like SCR denitration tower of whirl, including tower body and a plurality of catalyst layers of tower body inside, the inside of tower body is equipped with the backup pad, and gas mixing subassembly is installed to the upside of backup pad, and the bottom of tower body is connected with the vortex subassembly, and the upper end of vortex subassembly passes gas mixing subassembly and extends to outside. According to the utility model, ammonia is introduced into the flow dividing cylinder through the air inlet pipe, and is dispersed and discharged through the plurality of air exhaust holes on the flow dividing cylinder, the flow dividing cylinder is driven to rotate through the rotating gear, so that the ammonia and the flue gas are fully mixed, meanwhile, the rotation of the rotating rod is utilized to drive the first rotational flow fan plate, the second rotational flow fan plate and the third rotational flow fan plate to rotate together, so that the entering flue gas rises in a spiral manner, the rotating rod can drive the fan blades to rotate, and through the operation, the flue gas and the ammonia are dispersed, and the mixing of the flue gas and the ammonia is promoted.

Description

Cyclone plate type SCR denitration tower

Technical Field

The utility model relates to the technical field of denitration towers, in particular to a cyclone plate type SCR denitration tower.

Background

The widely used denitration method is a Selective Catalytic Reduction (SCR) method, which uses NH3 as a reducing agent to reduce NOx into harmless N2 under the action of a catalyst, so that NOx in the flue gas is removed, and the flue gas is required to be introduced into a denitration tower for denitration during denitration.

Wherein, chinese patent application number: 201510765741.3A cyclone plate type SCR denitration tower and a denitration method thereof comprise a denitration tower body and a corrugated plate type catalyst layer arranged along the inner circumferential surface of the denitration tower body, wherein the corrugated plate type catalyst layer forms a flue gas channel. Along the circumference of the corrugated plate type catalyst layer, a plurality of cyclone atomizing nozzles which are sprayed along the tangential direction are distributed from bottom to top. When the flue gas enters the flue gas channel from the bottom of the denitration tower body and meets the ammonia gas sprayed by the cyclone atomization nozzle, the flue gas and the ammonia gas are mutually sucked and mixed due to the cyclone spraying of the ammonia gas along the tangential direction, and the flue gas and the ammonia gas spirally rise along the direction of the inner circumference of the flue gas channel in a tangential mode. The denitration tower has the advantages of less catalyst consumption, simple and easy technical means on the premise of ensuring high-efficiency denitration. Compared with the prior art, the denitration tower has the advantages of simple structure, low manufacturing cost, high denitration efficiency and low energy consumption, reduces the escape rate of ammonia, greatly reduces the denitration cost, and remarkably improves the economic benefit.

According to the above, in order to mix ammonia and flue gas in the prior art, the cyclone is installed at the bottom of the denitration tower, and the jet orifice of ammonia is set to be in a cyclone atomization jet mode, so that the flue gas is spirally lifted and mixed with the ammonia through the cyclone, but the cyclone is installed at the bottom due to the certain height of the denitration tower, so that the flue gas flowing to the upper end of the denitration tower is inconvenient to be disturbed, a plurality of catalyst layers are installed in the denitration tower, and the catalyst layers can shield the air flow generated by the cyclone, so that the full mixing of the flue gas and the ammonia is affected.

Disclosure of Invention

The utility model aims to provide a cyclone plate type SCR denitration tower, which can avoid the conditions that a cyclone is arranged at the bottom, so that the flue gas flowing to the upper end of the denitration tower is inconvenient to disturb, a plurality of catalyst layers are arranged in the denitration tower, and the catalyst layers can shield the air flow generated by the cyclone to influence the thorough mixing of the flue gas and ammonia gas.

The utility model provides a cyclone plate type SCR denitration tower which comprises a tower body and a plurality of catalyst layers in the tower body, wherein a supporting plate is arranged in the tower body, a gas mixing assembly is arranged on the upper side of the supporting plate, the bottom of the tower body is connected with a turbulence assembly, and the upper end of the turbulence assembly penetrates through the gas mixing assembly and extends to the outside.

In a specific embodiment, the vortex subassembly includes the bull stick of rotating with the tower body bottom and being connected, the bottom of bull stick is connected with whirl fan board one, the bull stick is close to the position in the middle and is connected with whirl fan board two, the top of bull stick is connected with whirl fan board three.

In a specific embodiment, teeth are arranged on the outer sides of the first rotational flow fan plate and the second rotational flow fan plate, a second rotary gear is rotatably arranged on the supporting plate and meshed with the teeth, a first bevel gear is connected to the upper end of the second rotary gear, a second bevel gear is rotatably arranged on the side wall of the tower body and meshed with the first bevel gear, and a rotating shaft of the second bevel gear is connected with an output shaft of the motor.

In a specific embodiment, the gas mixing assembly comprises a diverter cylinder rotatably connected with the support plate, and a plurality of exhaust holes are formed in the diverter cylinder.

In a specific embodiment, a first rotary gear is arranged on the outer side of the shunt barrel, a reciprocating screw rod is connected to the center of the second bevel gear, the reciprocating screw rod is in threaded connection with one end of a rack, and the rack is meshed with the first rotary gear.

In a specific embodiment, a limit groove is formed in one side of the support plate, a limit rod is connected to one side of the rack, and the lower end of the limit rod is slidably connected with the limit groove.

In a specific embodiment, a plurality of fan blades are arranged on a rotating rod positioned in the shunt cylinder.

In a specific embodiment, a gap is left between the fan blade and the inner wall of the diverter cylinder.

In a specific embodiment, an air inlet pipe is connected to the side wall of the tower body, and the air outlet end of the air inlet pipe is located at the upper end of the split-flow cylinder.

In a specific embodiment, the air outlet at the upper end of the tower body is connected with the air inlet of the fan through a pipeline, and the air outlet of the fan is connected with the air inlet of the smoke exhaust pipe.

Compared with the prior art, the cyclone plate type SCR denitration tower provided by the embodiment of the utility model has the advantages that:

1. according to the utility model, ammonia is introduced into the flow dividing cylinder through the air inlet pipe, and is dispersed and discharged through the plurality of air exhaust holes on the flow dividing cylinder, the flow dividing cylinder is driven to rotate through the rotating gear, so that the ammonia and the flue gas are fully mixed, meanwhile, the rotation of the rotating rod is utilized to drive the first rotational flow fan plate, the second rotational flow fan plate and the third rotational flow fan plate to rotate together, so that the entering flue gas rises in a spiral manner, the rotating rod can drive the fan blades to rotate, and through the operation, the flue gas and the ammonia are dispersed, and the mixing of the flue gas and the ammonia is promoted.

2. According to the utility model, through the rotation of the bevel gear II, the bevel gear is driven to rotate by the rotating gear II, so that the rotating rod drives the rotational flow fan plate to rotate, and meanwhile, the reciprocating screw rod drives the rack to move, the rack is meshed with the rotating gear I, so that the flow dividing cylinder rotates, and the flow dividing cylinder and the rotating fan plate rotate simultaneously, so that the mixing effect of flue gas and ammonia gas is further improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

FIG. 2 is a schematic plan view of a cross-sectional view of an overall structure of an embodiment of the present utility model;

FIG. 3 is a schematic diagram of the structure of FIG. 2A according to an embodiment of the present utility model;

FIG. 4 is a schematic view illustrating a spoiler assembly according to an embodiment of the utility model;

fig. 5 is a sectional view of a diverter cartridge according to an embodiment of the present utility model.

Icon:

1. a tower body; 11. a catalyst layer; 12. a support plate; 13. a limit groove; 2. a gas mixing assembly; 21. a shunt barrel; 22. an exhaust hole; 23. rotating the first gear; 3. a spoiler assembly; 31. a rotating rod; 311. a fan blade; 32. a first rotational flow fan plate; 33. teeth; 34. a second rotational flow fan plate; 35. a rotational flow fan plate III; 36. rotating a second gear; 37. bevel gears I; 38. bevel gears II; 39. a reciprocating screw rod; 391. a rack; 392. a limit rod; 4. an air inlet pipe; 5. a pipe; 6. a blower; 7. and a smoke exhaust pipe.

Detailed Description

In order to make ammonia and flue gas mix among the prior art, install the swirler in the bottom of denitration tower to set up the jet orifice of ammonia into the mode that the whirl atomizing was sprayed, make flue gas spiral rise through the swirler mix with ammonia, but because the denitration tower has certain height, the swirler is installed in the bottom, is inconvenient for disturbing the flue gas that flows to the denitration tower upper end, and a plurality of catalyst layers can be installed to the denitration tower inside, and the catalyst layer can shelter from the air current that the swirler produced, influences the intensive mixing of flue gas and ammonia. Therefore, the ammonia is introduced into the flow distribution cylinder through the air inlet pipe, and is dispersed and discharged through the plurality of exhaust holes on the flow distribution cylinder, the flow distribution cylinder is driven to rotate through the rotary gear, so that the ammonia and the flue gas are fully mixed, meanwhile, the rotation of the rotating rod is utilized, the first rotational flow fan plate, the second rotational flow fan plate and the third rotational flow fan plate are driven to rotate together, the entering flue gas is spirally lifted, the rotating rod can drive the fan blades to rotate, the flue gas and the ammonia are dispersed through the operation, and the mixing of the flue gas and the ammonia is promoted, so that the defects are overcome.

Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

Referring to fig. 1-5, an embodiment of the present utility model provides a cyclone plate type SCR denitration tower, which includes a tower body 1 and a plurality of catalyst layers 11 inside the tower body 1, and a flue gas inlet is formed at the lower side of the tower body 1.

As shown in fig. 2, a support plate 12 is provided in the tower body 1, a gas mixing assembly 2 is mounted on the upper side of the support plate 12, the gas mixing assembly 2 is provided with a flow dividing cylinder 21 rotatably connected with the support plate 12, a plurality of exhaust holes 22 are formed in the flow dividing cylinder 21, and ammonia gas entering the flow dividing cylinder 21 is divided through the plurality of exhaust holes 22, so that the ammonia gas drifts at any position of the tower body 1 to be mixed with flue gas.

Wherein, be connected with intake pipe 4 on the lateral wall of tower body 1, make the exhaust end of intake pipe 4 be located the upper end of reposition of redundant personnel section of thick bamboo 21, intake pipe 4 are used for being connected with external ammonia storage device, introduce ammonia, intake pipe 4 do not contact with reposition of redundant personnel section of thick bamboo 21 simultaneously, do not influence the rotation of reposition of redundant personnel section of thick bamboo 21.

As shown in fig. 3 to 4, a spoiler assembly 3 is connected to the bottom of the tower body 1, and the upper end of the spoiler assembly 3 extends to the outside through the gas mixing assembly 2.

Specifically, vortex subassembly 3 includes the bull stick 31 of rotating with tower 1 bottom and being connected, and the bottom of bull stick 31 is connected with whirl fan plate one 32, and whirl fan plate one 32 upwards disturbs the flue gas that gets into tower 1 inside, is connected with whirl fan plate two 34 in the position that bull stick 31 is close to the centre, and whirl fan plate two 34 makes flue gas and ammonia mix, is connected with whirl fan plate three 35 simultaneously on the top of bull stick 31, and whirl fan plate three 35 is used for promoting the discharge of flue gas.

It should be noted that, the outer sides of the first rotational flow fan plate 32 and the second rotational flow fan plate 34 and the third rotational flow fan plate 35 are respectively provided with a tooth 33, the support plate 12 is rotatably provided with a second rotary gear 36, the second rotary gear 36 is meshed with the tooth 33, in order to rotate the second rotary gear 36, the upper end of the second rotary gear 36 is connected with a first bevel gear 37, and the side wall of the tower body 1 is rotatably provided with a second bevel gear 38.

Meanwhile, a first rotary gear 23 is arranged on the outer side of the split cylinder 21, a reciprocating screw rod 39 is connected to the center of a second bevel gear 38, the reciprocating screw rod 39 is in threaded connection with one end of a rack 391, the second bevel gear 38 rotates and drives the reciprocating screw rod 39 to rotate, the rack 391 is driven to reciprocate, and the first rotary gear 23 carries the split cylinder 21 to rotate in the forward and reverse directions due to the fact that the rack 391 is meshed with the first rotary gear 23, so that ammonia gas can fly rapidly.

In addition, a limit groove 13 is formed in one side of the support plate 12, a limit rod 392 is connected to one side of the rack 391, and when the rack 391 moves, the movement direction of the rack 391 is ensured by the sliding of the limit rod 392 in the limit groove 13.

It is needless to say that the rotating rod 31 inside the flow dividing cylinder 21 is provided with a plurality of fan blades 311, the fan blades 311 are driven to rotate together while the rotating rod 31 rotates, the fan blades 311 promote the ammonia inside the flow dividing cylinder 21 to be rapidly discharged from the exhaust hole 22, and meanwhile, gaps are reserved between the fan blades 311 and the inner wall of the flow dividing cylinder 21, so that the rotation of the flow dividing cylinder 21 is not affected by the fan blades 311.

Because the gas outlet of tower body 1 upper end is connected with the air inlet of fan 6 through pipeline 5, and the air outlet of fan 6 is connected with the air inlet of exhaust pipe 7, after the flue gas denitration, fan 6 will qualified flue gas suction to discharge from exhaust pipe 7.

In summary, the working principle of the cyclone plate type SCR denitration tower provided by the embodiment of the utility model is as follows: after the flue gas enters the tower body 1 from the flue gas inlet, the motor drives the bevel gear II 38 to rotate, the bevel gear II 38 is meshed with the bevel gear I37, the bevel gear I37 drives the rotary gear II 36 to rotate, at the moment, the tooth 33 drives the cyclone fan plate II 34 to rotate, the cyclone fan plate I32 and the cyclone fan plate III 35 rotate together, the flue gas ascends in a spiral manner through the disturbance of the cyclone fan plates and is mixed with the ammonia gas discharged from the split flow cylinder 21, and meanwhile the split flow cylinder 21 rotates through the meshing of the rack 391 and the rotary gear I23, so that the mixing of the flue gas and the ammonia gas is accelerated.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a board-like SCR denitration tower of whirl, includes a plurality of catalyst layers (11) of tower body (1) and tower body (1) inside, its characterized in that: the inside of tower body (1) is equipped with backup pad (12), gas mixing subassembly (2) are installed to the upside of backup pad (12), the bottom of tower body (1) is connected with vortex subassembly (3), the upper end of vortex subassembly (3) passes gas mixing subassembly (2) and extends to the outside.

2. The cyclone plate type SCR denitration tower according to claim 1, wherein: the vortex subassembly (3) include with tower body (1) bottom rotate bull stick (31) of being connected, the bottom of bull stick (31) is connected with whirl fan board one (32), the position that bull stick (31) are close to the centre is connected with whirl fan board two (34), the top of bull stick (31) is connected with whirl fan board three (35).

3. The cyclone plate type SCR denitration tower according to claim 2, wherein: the spiral-flow fan comprises a first spiral-flow fan plate (32), a second spiral-flow fan plate (34) and a third spiral-flow fan plate (35), wherein teeth (33) are arranged on the outer side of the first spiral-flow fan plate, a second rotary gear (36) is rotatably arranged on a supporting plate (12), the second rotary gear (36) is meshed with the teeth (33), a first bevel gear (37) is connected to the upper end of the second rotary gear (36), a second bevel gear (38) is rotatably arranged on the side wall of the tower body (1), the second bevel gear (38) is meshed with the first bevel gear (37), and a rotating shaft of the second bevel gear (38) is connected with an output shaft of a motor.

4. A cyclone plate type SCR denitration tower according to claim 3, wherein: the gas mixing assembly (2) comprises a flow dividing cylinder (21) rotationally connected with the supporting plate (12), and a plurality of exhaust holes (22) are formed in the flow dividing cylinder (21).

5. The cyclone plate type SCR denitration tower according to claim 4, wherein: the outside of reposition of redundant personnel section of thick bamboo (21) is equipped with rotary gear one (23), the center department of bevel gear two (38) is connected with reciprocating lead screw (39), reciprocating lead screw (39) and one end threaded connection of rack (391), rack (391) and rotary gear one (23) meshing.

6. The cyclone plate type SCR denitration tower according to claim 5, wherein: one side of the supporting plate (12) is provided with a limiting groove (13), one side of the rack (391) is connected with a limiting rod (392), and the lower end of the limiting rod (392) is in sliding connection with the limiting groove (13).

7. The cyclone plate type SCR denitration tower according to claim 4, wherein: a plurality of fan blades (311) are arranged on the rotating rod (31) positioned in the shunt cylinder (21).

8. The cyclone plate type SCR denitration tower according to claim 7, wherein: a gap is reserved between the fan blade (311) and the inner wall of the diversion cylinder (21).

9. The cyclone plate type SCR denitration tower according to claim 2, wherein: the side wall of the tower body (1) is connected with an air inlet pipe (4), and the exhaust end of the air inlet pipe (4) is positioned at the upper end of the split flow cylinder (21).

10. The cyclone plate type SCR denitration tower according to claim 1, wherein: the gas outlet of the upper end of the tower body (1) is connected with the gas inlet of the fan (6) through a pipeline (5), and the gas outlet of the fan (6) is connected with the gas inlet of the smoke exhaust pipe (7).