CN218688021U

CN218688021U - SCR denitration reactor

Info

Publication number: CN218688021U
Application number: CN202222892806.9U
Authority: CN
Inventors: 叶卫华; 赵广荣; 何泳彬; 吕文钊
Original assignee: Foshan Sanye Environmental Protection Equipment Engineering Co ltd
Current assignee: Foshan Sanye Environmental Protection Equipment Engineering Co ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2023-03-24
Anticipated expiration: 2032-11-01

Abstract

The utility model discloses an SCR denitration reactor, which comprises an air inlet flue and a reactor main body, wherein the reactor main body is provided with an air inlet and an air outlet, the air inlet flue is communicated with the air inlet through a flue bent angle, a flue gas guide mechanism is arranged in the flue bent angle, and a rectifying grid and a plurality of groups of SCR denitration catalyst layers are sequentially arranged in the reactor main body along the flue gas flow direction; the flue gas guiding mechanism comprises a plurality of groups of guide vanes which are arranged side by side, each guide vane comprises a windward plate close to one side of the air inlet flue and a leeward plate close to one side of the air inlet, and the windward plates and the leeward plates are connected at a certain angle. The utility model discloses a SCR denitration reactor simple structure can make the flue gas distribute on the denitration catalyst uniformly, effectively improves reaction efficiency, reduces reaction cost.

Description

SCR denitration reactor

Technical Field

The utility model relates to an environmental protection equipment technical field, concretely relates to SCR denitration reactor.

Background

With the increasing support of the nation on the popularization and application of biomass furnaces, the biomass furnaces are more and more concerned and applied, and the pollution treatment of nitrogen oxide emission in furnace gas is more and more important. SCR, a selective catalytic reduction process, utilizes a reducing agent (NH) ₃ Urea) under the action of catalyst selectively reacting with NO _X Reaction of NO with _X Reduction to N ₂ And H ₂ And O, thereby achieving the effect of treating the nitrogen oxide. The reactor among the prior art mainly adopts flue gas and reductant misce bene back through the cowling panel to get into catalyst bed at comparatively even speed, but passes through the elbow in reactor and flue gas passageway and be connected the condition, and the flue gas is great in the speed in the elbow outside, and inboard speed is less, and the air current that leads to entering into the cowling panel distributes unevenly, seriously influences the denitration efficiency of reactor.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to overcome the not enough of prior art existence, provide a simple structure, can make the flue gas distribute on the denitration catalyst uniformly, effectively improve reaction efficiency, reduce reaction cost's SCR denitration reactor.

In order to solve the technical problem, the utility model discloses a following technical scheme:

an SCR denitration reactor comprises an air inlet flue and a reactor main body, wherein the reactor main body is provided with an air inlet and an air outlet, the air inlet flue is communicated with the air inlet through a flue bend angle, a flue gas guide mechanism is arranged in the flue bend angle, and a rectifying grid and a plurality of groups of SCR denitration catalyst layers are sequentially arranged in the reactor main body along the flow direction of flue gas;

the flue gas water conservancy diversion mechanism includes the water conservancy diversion piece that a plurality of groups were arranged side by side, the water conservancy diversion piece is including being close to the windward plate of inlet flue one side and being close to the leeward plate of air inlet one side, the windward plate with leeward plate becomes certain angle and connects.

As a further improvement of the above technical solution:

the included angle alpha between the windward plate and the leeward plate is 130-160 degrees.

The included angle beta between the windward plate and the horizontal plane is 45-50 degrees.

The connection points of the windward plate and the leeward plate on the plurality of groups of guide vanes are positioned on the same straight line.

The back wind plate is provided with a plurality of groups of air holes.

The reactor comprises a reactor main body, and is characterized by further comprising a frame, wherein the air inlet flue and the reactor main body are erected on the frame.

The frame is provided with a plurality of groups of platforms and crawling ladders for connecting the platforms.

The reactor main body is provided with access windows corresponding to the platforms.

Catalyst inlet flanges are arranged on the reactor main body corresponding to the platforms of each group.

And a hoisting device for hoisting accessories is arranged on the frame.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses a SCR denitration reactor is including flue and reactor main part admit air, flue gas in the flue that admits air enters into the reactor main part through the flue bent angle, wherein the air inlet is loudspeaker form, through set up flue gas guiding mechanism in the flue bent angle, the flue gas is during the water conservancy diversion piece of arranging side by side, be separated for different runners by the windward plate, and from the air current of leeward plate output different orientation, can make the flue gas by the central zone territory of relative concentration to the relatively poor regional diffusion of flue gas distribution all around, rethread rectification grid makes the input flue gas (contains the ammonia, oxygen and NO, NO _X ) Flow at a slower and average speed, and are uniformly distributed on the SCR denitration catalyst layer, so that the contact time and the contact area of catalytic reaction are increased, the reaction efficiency of the SCR denitration reactor is effectively improved, and the reaction cost is reduced.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention.

Fig. 2 is an enlarged view of detail a in fig. 1.

Fig. 3 is a front view of the present invention.

Fig. 4 is a side view of the present invention.

Illustration of the drawings:

1. an air intake flue; 2. a reactor body; 201. an air inlet; 202. an air outlet; 3. a flue bend angle; 4. a flue gas diversion mechanism; 401. a flow deflector; 4011. a windward plate; 4012. a leeward plate; 5. a rectifying grid; 6. an SCR denitration catalyst layer; 7. a frame; 8. a platform; 9. climbing a ladder; 10. an access panel; 11. a catalyst inlet flange; 12. a hoisting device.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments.

As shown in fig. 1 and fig. 2, the SCR denitration reactor of the present embodiment includes an air inlet flue 1 and a reactor main body 2, the reactor main body 2 is provided with an air inlet 201 and an air outlet 202, the air inlet flue 1 is communicated with the air inlet 201 through a flue bend 3, a flue gas guide mechanism 4 is arranged in the flue bend 3, and a rectifier grid 5 and a plurality of groups of SCR denitration catalyst layers 6 are sequentially arranged in the reactor main body 2 along a flue gas flow direction; the flue gas guiding mechanism 4 comprises a plurality of groups of guide vanes 401 arranged side by side, each guide vane 401 comprises an upwind plate 4011 close to one side of the air inlet flue 1 and a leeward plate 4012 close to one side of the air inlet 201, and the upwind plate 4011 and the leeward plate 4012 are connected at a certain angle. This SCR denitration reactor includes air inlet flue 1 and reactor main part 2, flue gas in the air inlet flue 1 enters into in the reactor main part 2 through flue bent angle 3, wherein air inlet 201 is the loudspeaker form, through set up flue gas guiding mechanism 4 in flue bent angle 3, during the flue gas is through the water conservancy diversion piece 401 of arranging side by side, be separated for different runners by windward plate 4011, and export the air current of different orientations from leeward plate 4012, can make the flue gas by the central zone of relative concentration to the regional diffusion that the flue gas distributes poorly all around, rethread rectifier grid 5 makes input flue gas (contain ammonia, oxygen and NO, NO can not reach the regional diffusion of flue gas distribution all around, the rethread rectifier grid _X ) Flows at a slower and average speed and is uniformly distributed on the SCR denitration catalyst layer 6, so that the contact time and the contact area of the catalytic reaction are increased, and the SCR denitration reaction is effectively improvedThe reaction efficiency of the reactor is improved, and the reaction cost is reduced.

Preferably, the included angle α between the windward plate 4011 and the leeward plate 4012 is 130 ° to 160 °.

Preferably, the included angle beta between the windward plate 4011 and the horizontal plane is 45-50 deg.

Preferably, the connection points of the windward plate 4011 and the leeward plate 4012 on the groups of guide vanes 401 are located on the same straight line.

Preferably, a plurality of groups of air holes are formed in the leeward plate 4012, so that the effect of uniformly distributing the flue gas can be further improved.

As shown in fig. 3 and 4, preferably, the denitration reactor further comprises a frame 7, the air inlet flue 1 and the reactor main body 2 are erected on the frame 7, the connection stability and the structural strength between the air inlet flue 1 and the reactor main body 2 can be improved, meanwhile, the space occupied by the whole denitration reactor can be reduced, and the requirement on the site area is reduced.

Preferably, the frame 7 is provided with a plurality of sets of platforms 8 and ladder stands 9 for connecting the sets of platforms 8. In this embodiment, set up the aim at of platform 8 and cat ladder 9 on frame 7, for flue 1 and reactor main part 2 provide a plurality of not co-altitude, can supply the maintenance space that the maintainer stood, reduce the maintenance degree of difficulty, improve maintenance efficiency.

Preferably, the reactor main body 2 is provided with an access window 10 corresponding to each set of platform 8. In this embodiment, set up access panel 10 on the reactor main part 2, the maintenance of being convenient for personnel is through opening access panel 10 and observing and maintaining reactor main part 2 is inside, further improves maintenance efficiency.

Preferably, the reactor main body 2 is provided with a catalyst inlet flange 11 corresponding to each set of platforms 8. In this embodiment, set up catalyst import flange 11 on the reactor main part 2, the maintainer of being convenient for overhauls and replaces the catalyst in the inside SCR denitration catalyst layer 6 of reactor main part 2 through catalyst import flange 11, is favorable to prolonging denitration reactor's life.

Preferably, the frame 7 is provided with a lifting device 12 for lifting the accessories. In this embodiment, set up hoisting accessory 12's aim at on frame 7, be convenient for carry out the handling to the required accessory of denitration reactor operation, improve the work efficiency of installation, dismantlement or maintenance.

The above description is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, the modifications and changes obtained without departing from the technical idea of the present invention shall be considered as the protection scope of the present invention.

Claims

1. An SCR denitration reactor comprises an air inlet flue (1) and a reactor main body (2), wherein the reactor main body (2) is provided with an air inlet (201) and an air outlet (202), the air inlet flue (1) is communicated with the air inlet (201), and the SCR denitration reactor is characterized in that the air inlet flue (1) is communicated with the air inlet (201) through a flue bent angle (3), a flue gas guide mechanism (4) is arranged in the flue bent angle (3), and a rectifying grating (5) and a plurality of groups of SCR denitration catalyst layers (6) are sequentially arranged in the reactor main body (2) along the flow direction of flue gas;

flue gas water conservancy diversion mechanism (4) include guide vane (401) that a plurality of groups arranged side by side, guide vane (401) are including being close to windward plate (4011) of flue (1) one side of admitting air and being close to leeward plate (4012) of air inlet (201) one side, windward plate (4011) with leeward plate (4012) become certain angle and connect.

2. The SCR denitration reactor of claim 1, wherein an included angle α between the windward plate (4011) and the leeward plate (4012) is 130 ° to 160 °.

3. The SCR denitration reactor of claim 2, wherein an angle β between the windward plate (4011) and a horizontal plane is 45 ° to 50 °.

4. The SCR denitration reactor according to claim 3, wherein connection points of the windward plate (4011) and the leeward plate (4012) on a plurality of groups of said guide vanes (401) are located on the same straight line.

5. The SCR denitration reactor of claim 4, wherein the back wind plate (4012) is provided with a plurality of sets of air holes.

6. The SCR denitration reactor according to any one of claims 1 to 5, further comprising a frame (7), wherein the intake flue (1) and the reactor body (2) are erected on the frame (7).

7. An SCR denitration reactor as claimed in claim 6, wherein said frame (7) is provided with a plurality of sets of platforms (8) and ladder stands (9) for connecting each set of said platforms (8).

8. The SCR denitration reactor according to claim 7, wherein an access window (10) is provided on the reactor main body (2) corresponding to each set of the platforms (8).

9. The SCR denitration reactor according to claim 8, wherein a catalyst inlet flange (11) is provided on the reactor main body (2) corresponding to each set of the platforms (8).

10. The SCR denitration reactor of claim 7, wherein the frame (7) is provided with a lifting device (12) for lifting accessories.