CN215352971U

CN215352971U - SCR flue gas denitration reactor for cement kiln

Info

Publication number: CN215352971U
Application number: CN202121843671.6U
Authority: CN
Inventors: 盛斌
Original assignee: Changxing Shengwang New Material Co ltd
Current assignee: Zhejiang Shengwang Environmental Protection Technology Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2021-12-31
Anticipated expiration: 2031-08-09

Abstract

The utility model discloses an SCR flue gas denitration reactor for a cement kiln, which comprises a reactor body and a first screen plate, wherein the first screen plate is fixedly connected to the lower part inside the reactor body, and a reaction device is installed inside the reactor body. This SCR flue gas denitration reactor for cement kiln, through first box, the drain pipe, the catalyst layer, discharge fume the pipe and advance mutually supporting between the tobacco pipe isotructure, can enter into the reactor with the flue gas through advancing the tobacco pipe originally internally, the flue gas passes through the second otter board can react with the catalyst, thereby carry out preliminary round pin removal processing to the flue gas, through the motor, mutually support between first helical gear and the second helical gear isotructure, output shaft that can pass through the motor drives first helical gear and rotates, first helical gear drives the barrel through the second helical gear and rotates, make the barrel drive jet-propelled head through first trachea and rotate, thereby make the more even that spun ammonia and flue gas mix, and then improved and taken off round pin reaction effect.

Description

SCR flue gas denitration reactor for cement kiln

Technical Field

The utility model relates to the technical field of cement kiln flue gas denitration, in particular to an SCR flue gas denitration reactor for a cement kiln.

Background

The cement kiln brick is a brick manufactured by using fly ash, coal cinder, coal gangue, tailing slag, chemical slag or natural sand, tidal marsh mud and the like as main raw materials and cement as a coagulant through high-temperature calcination, and is generally sintered in batches through a cement kiln, but the cement kiln can generate a large amount of smoke during working, so that the smoke needs to be subjected to denitration treatment through a reactor, the denitration effect of the reactor in the prior art on the smoke is not good, and the sprayed ammonia and the like cannot be better mixed with the smoke.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an SCR flue gas denitration reactor for a cement kiln, which aims to solve the problems that the reactor in the prior art has poor denitration effect on flue gas and cannot better mix ejected ammonia gas and the like with the flue gas, which are proposed in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: an SCR flue gas denitration reactor for a cement kiln comprises a reactor body and a first screen plate, wherein the first screen plate is fixedly connected to the lower part inside the reactor body, and a reaction device is installed inside the reactor body;

the reaction device comprises a first box body, a drain pipe, a second mesh plate, a catalyst layer, a smoke exhaust pipe and a smoke inlet pipe;

the lower part of the first box body is fixedly connected with the reactor body, a drain pipe is fixedly connected to the lower part of the right side of the first box body, a plurality of second screen plates are arranged on the left side of the upper part of the first box body, the outer walls of the second screen plates are fixedly connected with the inside of the reactor body, a catalyst layer is installed above the second screen plates, smoke exhaust pipes and smoke inlet pipes are arranged above and below the second screen plates respectively, and the smoke exhaust pipes and the outer walls of the smoke inlet pipes are fixedly connected with the reactor body.

Preferably, the top right side rigid coupling of first box has the second box, the top right side rigid coupling of second box has the lid, can store the ammonia like this through the second box.

Preferably, an air injection device is arranged above the inside of the reactor body;

the air injection device comprises a cylinder, a first air pipe, a joint, an air injection head, a second air pipe and an air pump;

the barrel passes through the bearing and rotates with the reactor body and links to each other, the below rigid coupling of barrel has first trachea, the rigid coupling has joint and a plurality of air jet head respectively with the below in the middle of the top of first trachea, the top of joint is rotated and is connected with the second trachea, and the tracheal outer wall of second and the inner wall clearance fit of barrel, the tracheal right side below rigid coupling of second has the air pump.

Preferably, the below of air pump is linked together through the inside of third trachea with the second box, the top outer wall rigid coupling of air pump has the diaphragm, and the left side of diaphragm links to each other with the reactor body is fixed, and the air pump can be derived the ammonia in the second box through the third trachea like this.

Preferably, a rotating device is arranged above the reactor body;

the rotating device comprises a vertical plate, a motor, a first bevel gear and a second bevel gear;

the lower part of the vertical plate is fixedly connected with the reactor body, the motor is fixedly connected to the inner part of the vertical plate, the first helical gear is fixedly connected to an output shaft of the motor, the second helical gear is meshed and connected to the lower part of the left side of the first helical gear, and the inner part of the second helical gear is fixedly connected with the outer wall of the cylinder body.

Compared with the prior art, the utility model has the beneficial effects that: according to the SCR flue gas denitration reactor for the cement kiln, through mutual matching of the structures such as the first box body, the drain pipe, the second screen plate, the catalyst layer, the exhaust pipe and the smoke inlet pipe, flue gas can enter the reactor body through the smoke inlet pipe and can react with the catalyst layer through the second screen plate, so that preliminary denitration treatment is performed on the flue gas;

through the mutual matching among the structures such as the cylinder body, the first air pipe, the joint, the air nozzle, the second air pipe, the air pump and the like, the air pump can lead ammonia out through the third air pipe and discharge the ammonia into the second air pipe, the ammonia flows into the first air pipe through the second air pipe and is finally sprayed out through the air nozzle, and thus, the flue gas after reaction is mixed;

through mutually supporting between riser, motor, first helical gear and the second helical gear isotructure, can drive first helical gear through the output shaft of motor and rotate, first helical gear drives the barrel through the second helical gear and rotates, makes the barrel drive the air jet head through first trachea and rotates to make spun ammonia and flue gas mix more evenly, and then improved and taken off a round pin reaction effect.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the first net plate, the second net plate and the smoke inlet pipe in FIG. 2;

FIG. 4 is a schematic view of the structure of the motor, the showerhead and the first gas tube of FIG. 2;

fig. 5 is a schematic structural view of the horizontal plate, the air pump and the second air pipe in fig. 2.

In the figure: 1. the reactor comprises a reactor body, 2, a first screen plate, 3, a reaction device, 301, a first box body, 302, a drain pipe, 303, a second screen plate, 304, a catalyst layer, 305, a smoke exhaust pipe, 306, a smoke inlet pipe, 4, an air injection device, 401, a cylinder body, 402, a first air pipe, 403, a joint, 404, an air injection head, 405, a second air pipe, 406, an air pump, 5, a rotating device, 501, a vertical plate, 502, a motor, 503, a first bevel gear, 504, a second bevel gear, 6, a second box body, 7, a cover body, 8, a third air pipe, 9 and a transverse plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a cement kiln is with SCR flue gas denitration reactor, including reactor body 1 and first otter board 2, reactor body 1's inside below rigid coupling has first otter board 2, it has the opening to process in the middle of the below of reactor body 1, reactor body 1's internally mounted reaction unit 3, reaction unit 3 includes first box 301, drain pipe 302, second otter board 303, catalyst layer 304, exhaust pipe 305 and advance tobacco pipe 306, the below of first box 301 is fixed with reactor body 1 and is linked to each other, the top left side of first box 301 is processed there is the opening, the right side below of first box 301 rigid coupling has drain pipe 302, install the valve on the drain pipe 302, the top left side of first box 301 is equipped with 2 second otter boards 303, and the outer wall of second otter board 303 is fixed with reactor body 1's inside and is linked to each other, catalyst layer 304 is installed to the top of second otter board 303, the inside catalyst of catalyst layer 304 is iron, the first otter board 2, Vanadium, chromium, cobalt or molybdenum and other alkali metals, a smoke exhaust pipe 305 and a smoke inlet pipe 306 are respectively arranged above and below the second screen plate 303, the outer walls of the smoke exhaust pipe 305 and the smoke inlet pipe 306 are fixedly connected with the reactor body 1, the right side of the upper part of the first box body 301 is fixedly connected with a second box body 6, ammonia gas is stored in the second box body 6, and the right side of the upper part of the second box body 6 is fixedly connected with a cover body 7.

The reactor body 1 is internally provided with an air injection device 4 above, the air injection device 4 comprises a cylinder 401, a first air pipe 402, a joint 403, an air injection head 404, a second air pipe 405 and an air pump 406, the cylinder 401 is rotatably connected with the reactor body 1 through a bearing, the first air pipe 402 is fixedly connected below the cylinder 401, the first air pipe 402 can be driven to rotate through the cylinder 401, the joint 403 and 5 air injection heads 404 are respectively and fixedly connected above and below the first air pipe 402, the second air pipe 405 is rotatably connected above the joint 403, the second air pipe 405 can rotate at the joint 403, the outer wall of the second air pipe 405 is in clearance fit with the inner wall of the cylinder 401, the right side of the second air pipe 405 is fixedly connected with an air pump 406, the model of the air pump 406 is XFC-2200W, the lower part of the air pump 406 is communicated with the inside of the second box 6 through a third air pipe 8, the upper outer wall of the air pump 406 is fixedly connected with a transverse plate 9, and the left side of the transverse plate 9 is fixedly connected with the reactor body 1.

Rotating device 5 is installed to reactor body 1's top, rotating device 5 includes riser 501, motor 502, first helical gear 503 and second helical gear 504, riser 501's below and reactor body 1 fixed connection, riser 501's inside rigid coupling has motor 502, motor 502's model is BLD-09, motor 502's output shaft rigid coupling has first helical gear 503, first helical gear 503's left side below meshing is connected with second helical gear 504, motor 502's output shaft can drive second helical gear 504 through first helical gear 503 and rotate, and the inside of second helical gear 504 and the outer wall of barrel 401 are fixed continuous.

In this embodiment, when an operator needs to use the SCR flue gas denitration reactor for a cement kiln, the operator firstly discharges flue gas into the reactor body 1 through the flue gas inlet pipe 306, the flue gas passes through the second mesh plate 303 and then reacts with the catalyst layer 304, so that NOx in the flue gas can be converted into nitrogen and water through the catalyst layer 304, the generated water can be discharged into the first box body 301 through the first mesh plate 2, meanwhile, the external power supplies of the motor 502 and the air pump 406 are switched on, the motor 502 and the air pump 406 are started, the air pump 406 can introduce ammonia gas in the second box body 6 into the second air pipe 405 through the third air pipe 8, the ammonia gas can be discharged into the first air pipe 402 through the second air pipe 405 and finally is sprayed out through the spray head 404 to continue to react with the flue gas, at this time, the output shaft of the motor 502 can drive the first helical gear 503 to rotate, so that the first helical gear 503 drives the cylinder 401 to rotate through the second helical gear 504, barrel 401 can drive jet head 404 through first trachea 402 and rotate, alright so with mixing better with the flue gas with spun ammonia etc to SCR flue gas denitration effect has been improved.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a cement kiln is with SCR flue gas denitration reactor, includes reactor body (1) and first otter board (2), the inside below rigid coupling of reactor body (1) has first otter board (2), its characterized in that: a reaction device (3) is arranged in the reactor body (1);

the reaction device (3) comprises a first box body (301), a water discharge pipe (302), a second mesh plate (303), a catalyst layer (304), a smoke discharge pipe (305) and a smoke inlet pipe (306);

the lower part of first box (301) is fixed continuous with reactor body (1), the right side below rigid coupling of first box (301) has drain pipe (302), the top left side of first box (301) is equipped with a plurality of second otter boards (303), and the outer wall of second otter board (303) links to each other with the inside of reactor body (1) is fixed, catalyst layer (304) are installed to the top of second otter board (303), the upper and lower below of second otter board (303) is equipped with respectively and discharges fume pipe (305) and advances tobacco pipe (306), and discharges fume the outer wall of pipe (305) and advancing tobacco pipe (306) and all link to each other with reactor body (1) is fixed.

2. The SCR flue gas denitration reactor for the cement kiln as claimed in claim 1, characterized in that: the top right side rigid coupling of first box (301) has second box (6), the top right side rigid coupling of second box (6) has lid (7).

3. The SCR flue gas denitration reactor for the cement kiln as claimed in claim 1, characterized in that: an air injection device (4) is arranged above the inside of the reactor body (1);

the air injection device (4) comprises a cylinder body (401), a first air pipe (402), a joint (403), an air injection head (404), a second air pipe (405) and an air pump (406);

barrel (401) rotate with reactor body (1) through the bearing and link to each other, the below rigid coupling of barrel (401) has first trachea (402), the rigid coupling has joint (403) and a plurality of jet-propelled head (404) respectively with the below in the middle of the top of first trachea (402), the top of joint (403) is rotated and is connected with second trachea (405), and the outer wall of second trachea (405) and the inner wall clearance fit of barrel (401), the right side below rigid coupling of second trachea (405) has air pump (406).

4. The SCR flue gas denitration reactor for the cement kiln as claimed in claim 3, characterized in that: the lower part of the air pump (406) is communicated with the inside of the second box body (6) through a third air pipe (8), a transverse plate (9) is fixedly connected to the outer wall of the upper part of the air pump (406), and the left side of the transverse plate (9) is fixedly connected with the reactor body (1).

5. The SCR flue gas denitration reactor for the cement kiln as claimed in claim 1, characterized in that: a rotating device (5) is arranged above the reactor body (1);

the rotating device (5) comprises a vertical plate (501), a motor (502), a first bevel gear (503) and a second bevel gear (504);

the lower part of the vertical plate (501) is fixedly connected with the reactor body (1), the motor (502) is fixedly connected to the inner part of the vertical plate (501), the first bevel gear (503) is fixedly connected to an output shaft of the motor (502), the second bevel gear (504) is meshed and connected to the lower part of the left side of the first bevel gear (503), and the inner part of the second bevel gear (504) is fixedly connected with the outer wall of the cylinder body (401).