CN209791285U

CN209791285U - Dynamic mixing device for SCR denitration system

Info

Publication number: CN209791285U
Application number: CN201920236167.6U
Authority: CN
Inventors: 胡中光; 乐天祥
Original assignee: HUBEI GUANGJING ENVIRONMENTAL PROTECTION CATALYSTS Co Ltd
Current assignee: HUBEI GUANGJING ENVIRONMENTAL PROTECTION CATALYSTS Co Ltd
Priority date: 2019-02-25
Filing date: 2019-02-25
Publication date: 2019-12-17
Anticipated expiration: 2029-02-25

Abstract

The utility model discloses a dynamic mixing arrangement for SCR deNOx systems, including SCR reactor, flue gas pipeline and outlet duct, the top intercommunication of SCR reactor has flue gas pipeline, the bottom intercommunication of SCR reactor has the outlet duct, one side fixedly connected with rectangle frame of flue gas pipeline, and the bottom fixedly connected with motor of rectangle frame inner wall, the one end fixedly connected with horizontal pole of motor output shaft, the utility model relates to an SCR denitration device technical field. This a dynamic mixing device for SCR deNOx systems, one side fixedly connected with rectangle frame through flue gas pipeline for the mixing of flue gas and ammonia is more even abundant, and the vortex effect is better, has improved desulfurization efficiency, has reduced the escape rate of ammonia, through the fixedly connected with active carbon adsorption board between one side that two circular slabs are relative, can adsorb the filtration to the impurity in the flue gas, makes it be difficult for blockking up the ammonia jet, improves desulfurization efficiency.

Description

Dynamic mixing device for SCR denitration system

Technical Field

The utility model relates to a SCR denitration device technical field specifically is a dynamic mixing device for SCR deNOx systems.

background

The importance of preventing environmental pollution in the process of removing nitrogen oxides from combustion flue gas has been pointed out as a worldwide problem, and the more mainstream processes in the world are: SCR and SNCR, these two kinds of technologies except that because SCR uses the catalyst to lead to reaction temperature to be lower than SNCR, other do not have too big difference, for preventing in the boiler coal burning after produce too much NOX polluted environment, should carry out denitration treatment to the coal, divide into denitration before the burning, burning process denitration and denitration after the burning, the denitration technique is divided into two kinds: one is from the source treatment to control the generation of NOX in the calcination, and the other is from the tail end treatment to control the emission of NOX in the flue gas.

In SCR deNOx systems, the flue gas realizes the homogeneous mixing with the ammonia under static mixer's vortex effect, and general static mixer is at the vortex in-process, and the vortex effect is not good for the flue gas is inhomogeneous with the mixing of ammonia, has reduced desulfurization efficiency, and ammonia escape volume increases.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a developments mixing arrangement for SCR deNOx systems has solved the vortex effect not good for the flue gas is inhomogeneous with the mixing of ammonia, has reduced desulfurization efficiency, and the problem that ammonia escape volume increases.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a dynamic mixing device for SCR deNOx systems, includes SCR reactor, flue gas pipeline and outlet duct, the top intercommunication of SCR reactor has flue gas pipeline, the bottom intercommunication of SCR reactor has the outlet duct, one side fixedly connected with rectangle frame of flue gas pipeline, and the bottom fixedly connected with motor of rectangle frame inner wall, the one end fixedly connected with horizontal pole of motor output shaft, one side of flue gas pipeline inner wall just is located the horizontal pole directly over fixedly connected with fixed plate, and the bottom of fixed plate rotates and is connected with the montant, the fixed surface of horizontal pole is connected with the worm wheel, the fixed surface of montant is connected with the worm sleeve that meshes mutually with the worm wheel.

Preferably, the top and the bottom of the surface of the vertical rod are respectively and fixedly connected with a circular plate under the worm sleeve, and the periphery of the circular plate is respectively and fixedly connected with a blade.

Preferably, the one end that the motor output shaft was kept away from to the horizontal pole runs through flue gas pipeline and extends to flue gas pipeline's inside, the horizontal pole extends to inside one side rotation connection of one end of flue gas pipeline and flue gas pipeline inner wall of flue gas pipeline.

Preferably, two fixedly connected with active carbon adsorption plate between the relative one side of circular slab, be located the ammonia injection grid between the both sides of flue gas pipeline inner wall and just below fixedly connected with of circular slab.

Preferably, the top of the surface of the ammonia injection grid is communicated with a spray head, and one side of the bottom of the inner wall of the flue gas pipeline is fixedly connected with a first guide plate.

Preferably, one side of the top of the inner wall of the flue gas pipeline is fixedly connected with a second guide plate, and a catalyst layer is fixedly connected between two sides of the inner wall of the SCR reactor.

Advantageous effects

The utility model provides a dynamic mixing device for SCR deNOx systems. Compared with the prior art, the method has the following beneficial effects:

(1) This a dynamic mixing device for SCR deNOx systems, one side fixedly connected with rectangle frame through flue gas pipeline, and the bottom fixedly connected with motor of rectangle frame inner wall, motor output shaft's one end fixedly connected with horizontal pole, flue gas pipeline inner wall's one side just is located the horizontal pole directly over the fixedly connected with fixed plate, and the bottom of fixed plate rotates and is connected with the montant, the fixed surface of horizontal pole is connected with the worm wheel, the fixed surface of montant is connected with the worm sleeve that meshes with the worm wheel mutually, the top and the bottom on montant surface just are located the telescopic equal fixedly connected with circular slab of worm, and the equal fixedly connected with blade all around of circular slab, make the mixture of flue gas and ammonia more even abundant, the vortex effect is better, the desulfurization efficiency is improved, the escape rate of ammonia has been reduced.

(2) This a dynamic mixing device for SCR deNOx systems, through fixedly connected with active carbon adsorption plate between the relative one side of two circular slabs, between the both sides of flue gas pipeline inner wall and be located the circular slab under fixedly connected with spout the ammonia grid, the top intercommunication on ammonia grid surface has the shower nozzle, can adsorb the filtration to the impurity in the flue gas, makes it be difficult for blockking up the ammonia jet, improves desulfurization efficiency.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a cross-sectional view of the structure of the present invention;

FIG. 3 is an enlarged view of a portion of the substrate of FIG. 2;

Fig. 4 is a top view of the circular plate structure of the present invention.

In the figure: the device comprises an SCR (selective catalytic reduction) reactor 1, a flue gas pipeline 2, an air outlet pipe 3, a rectangular frame 4, a motor 5, a cross rod 6, a fixing plate 7, a vertical rod 8, a worm wheel 9, a worm sleeve 10, a circular plate 11, blades 12, an activated carbon adsorption plate 13, an ammonia spraying grid 14, a spray head 15, a first guide plate 16, a second guide plate 17 and a catalyst layer 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a dynamic mixing device for an SCR denitration system comprises an SCR reactor 1, a flue gas pipeline 2 and an air outlet pipe 3, wherein the top of the SCR reactor 1 is communicated with the flue gas pipeline 2, one side of the top of the inner wall of the flue gas pipeline 2 is fixedly connected with a second guide plate 17, a catalyst layer 18 is fixedly connected between two sides of the inner wall of the SCR reactor 1, the bottom of the SCR reactor 1 is communicated with the air outlet pipe 3, one side of the flue gas pipeline 2 is fixedly connected with a rectangular frame 4, the bottom of the inner wall of the rectangular frame 4 is fixedly connected with a motor 5, the motor 5 is controlled by an external switch, one end of an output shaft of the motor 5 is fixedly connected with a cross rod 6, one end of the cross rod 6, which is far away from the output shaft of the motor 5, penetrates through the flue gas pipeline 2 and extends into the flue gas pipeline 2, one end of the cross rod 6, which extends into the flue gas pipeline 2, is rotatably, and the bottom of the fixed plate 7 is rotatably connected with a vertical rod 8, the top and the bottom of the surface of the vertical rod 8 are fixedly connected with circular plates 11 under the worm sleeve 10, an activated carbon adsorption plate 13 is fixedly connected between the opposite sides of the two circular plates 11, the number of the activated carbon adsorption plates 13 is four, the activated carbon adsorption plates are uniformly distributed at the bottom of the circular plates 11, an ammonia injection grid 14 is fixedly connected between the two sides of the inner wall of the flue gas pipeline 2 and under the circular plates 11, the top of the surface of the ammonia injection grid 14 is communicated with a spray head 15, the number of the spray heads 15 is several, one side of the bottom of the inner wall of the flue gas pipeline 2 is fixedly connected with a first guide plate 16, and the blades 12 are fixedly connected to the periphery of the circular plate 11, and through the arrangement of the blades 12, turbulence is carried out on the air flow, so that the flue gas and the ammonia gas are mixed, the surface of the cross rod 6 is fixedly connected with a worm wheel 9, and the surface of the vertical rod 8 is fixedly connected with a worm sleeve 10 meshed with the worm wheel 9.

During the use, the flue gas flows into flue gas pipeline 2, ammonia injection grid 14 and shower nozzle 15 spray the ammonia, open motor 5, it rotates to drive horizontal pole 6, it is rotatory to drive montant 8 through worm wheel 9 and worm sleeve 10, make circular plate 11 drive blade 12 and rotate, the flue gas is under blade 12's vortex effect with the ammonia, mix more evenly, simultaneously in mixing process, active carbon adsorption plate 13 adsorbs the filtration to the impurity in the flue gas, make it be difficult for in shower nozzle 15 of below, just so accomplished once to this a dynamic mixing device's for SCR deNOx systems use.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a dynamic mixing device for SCR deNOx systems, includes SCR reactor (1), flue gas pipeline (2) and outlet duct (3), the top intercommunication of SCR reactor (1) has flue gas pipeline (2), the bottom intercommunication of SCR reactor (1) has outlet duct (3), its characterized in that: one side fixedly connected with rectangle frame (4) of flue gas pipeline (2), and the bottom fixedly connected with motor (5) of rectangle frame (4) inner wall, the one end fixedly connected with horizontal pole (6) of motor (5) output shaft, one side of flue gas pipeline (2) inner wall just is located horizontal pole (6) directly over fixedly connected with fixed plate (7), and the bottom of fixed plate (7) is rotated and is connected with montant (8), the fixed surface of horizontal pole (6) is connected with worm wheel (9), the fixed surface of montant (8) is connected with worm sleeve (10) with worm wheel (9) engaged with.

2. The dynamic mixing device for an SCR denitration system according to claim 1, wherein: the top and the bottom of montant (8) surface just are located equal fixedly connected with circular slab (11) under worm sleeve (10), and all fixedly connected with blade (12) around circular slab (11).

3. The dynamic mixing device for an SCR denitration system according to claim 1, wherein: one end, far away from motor (5) output shaft, of cross bar (6) runs through flue gas pipeline (2) and extends to the inside of flue gas pipeline (2), one end that cross bar (6) extend to flue gas pipeline (2) inside rotates with one side of flue gas pipeline (2) inner wall to be connected.

4. The dynamic mixing device for an SCR denitration system according to claim 2, wherein: two fixedly connected with active carbon adsorption board (13) between the relative one side of circular slab (11), between the both sides of flue gas pipeline (2) inner wall and be located circular slab (11) under fixedly connected with spout ammonia grid (14).

5. the dynamic mixing device for an SCR denitration system according to claim 4, wherein: the top on the surface of the ammonia injection grid (14) is communicated with a spray head (15), and one side of the bottom of the inner wall of the flue gas pipeline (2) is fixedly connected with a first guide plate (16).

6. The dynamic mixing device for an SCR denitration system according to claim 1, wherein: one side fixedly connected with second guide plate (17) at flue gas pipeline (2) inner wall top, fixedly connected with catalyst layer (18) between the both sides of SCR reactor (1) inner wall.