CN207786367U - A kind of flue gas flow mixing device for SCR denitration system - Google Patents
A kind of flue gas flow mixing device for SCR denitration system Download PDFInfo
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- CN207786367U CN207786367U CN201721582297.2U CN201721582297U CN207786367U CN 207786367 U CN207786367 U CN 207786367U CN 201721582297 U CN201721582297 U CN 201721582297U CN 207786367 U CN207786367 U CN 207786367U
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- flue gas
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Abstract
The utility model discloses a kind of flue gas flow mixing devices for SCR denitration system.The device is mounted between ammonia-spraying grid and SCR reactors, it is characterized in that, the device is made of the multiple mixed cells being disposed side by side in hollow flue, the mixed cell includes angle axis and the spoiler on the angle axis, the wherein described angle axis is rotatably installed in the hollow flue, the spoiler is the corrugated plating of arc, and the angle axis is arranged at the arc curve node location of spoiler.In the utility model, apparatus structure is simple, easy to maintenance, reliable for operation, can ensure that flue gas is mixed with the efficient of ammonia, be conducive to shorten ammonia-spraying grid between flue at a distance from, the efficiency of denitration reaction can be promoted.
Description
Technical field
The utility model is related to equipment for denitrifying flue gas field more particularly to a kind of flue gas mixed flows for SCR denitration system
Device.
Background technology
In recent years, China strengthened the control to nitrogen oxides, and had formulated stringent discharge and governance standard.With
China implements the discharged nitrous oxides being increasingly stringenter control standard, and a large amount of coal-burning boilers are gradually fired using various low NOxes
Burning technology and Emission Controlling Technology of Nitric Oxides, it is important to the research and development of SCR catalyst.In addition, commercial catalysts usually have one
Fixed shape can bear certain shock and catalyst is made to certain shape how in the case where ensureing catalyst activity
Shape, a problem in being developed for Practical Project and SCR catalysts.At present denitration technology mainly grasp at abroad,
Chinese scholar had also increased research and probe in denitration field in recent years, and achieved many achievements, but large industrialized
Production and the application of denitration technology are still in the pilot scale stage, also non-large-scale application, and denitration technology is also immature.
In numerous denitration technologies, selective catalytic reduction (SCR) technology have floor space is small, denitration efficiency is high,
The advantages that technology maturation, operating reliability are good, technological progress is fast, with other denitration technologies relatively in show one's talent, obtain
The extensive favor of owners.SCR system generally sprays into system, anti-by the stocking system of ammonia, ammonia and air mixing systems, ammonia
Answer the compositions such as device system.The mixing uniformity of flue gas and ammonia is selective-catalytic-reduction denitrified reactor before into catalyst layer
Important process design objective, directly affect the efficiency of denitration reaction.
Utility model content
The utility model provides a kind of flue gas flow mixing device for SCR denitration system, and apparatus structure is simple, repair side
Just, reliable for operation, can ensure that flue gas is mixed with the efficient of ammonia, be conducive to shorten ammonia-spraying grid between flue at a distance from, can
Promote the efficiency of denitration reaction.
The purpose of this utility model is achieved through the following technical solutions：
A kind of flue gas flow mixing device for SCR denitration system, the device be mounted on ammonia-spraying grid and SCR reactors it
Between, which is made of the multiple mixed cells being disposed side by side in hollow flue, the mixed cell include angle axis and
Spoiler on the angle axis, wherein the angle axis is rotatably installed in the hollow flue, it is described to disturb
Flowing plate is the corrugated plating of arc, and the angle axis is arranged at the arc curve node location of spoiler.
Preferably, between the mixed cell between be divided into fixed value.
Preferably, the angle axis is vertically set in hollow flue, bearing and hollow flue of the angle axis by both ends
Inner wall rotation connection.
Compared with prior art, the utility model has at least the following advantages：
By above-mentioned the technical solution of the utility model, before gaseous mixture enters reactor plus a high effective flue gas mixed flow fills
It sets, the angle adjustable of the flue gas flow mixing device enables flue gas to be sufficiently mixed with ammonia, it is ensured that before gaseous mixture enters reactor
It is uniformly mixed, the efficient mixing of flue gas and ammonia shortens at a distance between ammonia-spraying grid and flue, improves denitrating flue gas reaction
Efficiency, the utility model effect is good, quick, with good investment, brings considerable economic benefit for client.
Description of the drawings
Fig. 1 is the structural schematic diagram for the flue gas flow mixing device for SCR denitration system that the utility model embodiment provides；
Fig. 2 is that the operation principle for the flue gas flow mixing device for SCR denitration system that the utility model embodiment provides is shown
It is intended to.
Specific implementation mode
Below in conjunction with the attached drawing in the utility model, the technical solution in the utility model is carried out clearly and completely
Description, it is clear that described embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.Base
In the embodiments of the present invention, institute obtained by those of ordinary skill in the art without making creative efforts
There is other embodiment, shall fall within the protection scope of the present invention.
As shown in Figure 1, for a kind of flue gas flow mixing device for SCR denitration system that the utility model embodiment proposes,
The device is mounted between ammonia-spraying grid and SCR reactors, and the device is by multiple mixing lists for being disposed side by side in hollow flue 1
Member 2 forms, and mixed cell 2 includes angle axis 21 and the spoiler 22 on angle axis 21, and wherein angle axis 21 can revolve
Turn ground to be mounted in hollow flue 1, spoiler 22 is the corrugated plating of arc, and the arc curve in spoiler 22 is arranged in angle axis 21
At node location.
In specific implementation process, by adjusting the angle of angle axis 21 to drive the rotation of spoiler 22 to adjust the angle,
To achieve the purpose that promote mixed flow effect.
Preferably, between each mixed cell 2 between be divided into fixed value, i.e., equidistant placement is in hollow between each mixed cell 2
In flue 1.
A kind of optional or be preferably carried out mode as the utility model, angle axis 21 is vertically set in hollow flue 1,
Angle axis 21 is rotatablely connected by the bearing at both ends and the inner wall of hollow flue 1.According to actual use situation, difference can also be used
Mounting means, as long as ensureing that angle axis 21 is rotatable.
As shown in Fig. 2, below in conjunction with the accompanying drawings to the course of work and original of the flue gas flow mixing device of the utility model SCR denitration system
Reason is described as follows：
The rectified layer of gaseous mixture enters the utility model flue gas flow mixing device, when flue gas flows in hollow flue, impacts flow-disturbing
Plate, to increase the velocity gradient of fluid layer movement or form turbulent flow, when laminar flow is " segmentation-position movement-converges again ", rapids
When stream, fluid can also generate violent vortex in section direction, have very strong shearing force in stream in addition to above-mentioned three kinds of situations
Body makes fluid further divide mixing.It is left-handed when making fluid due to the effect of mixed cell, when and dextrorotation, constantly change stream
Dynamic mixing machine direction, not only pushes core flow to periphery, but also push peripheral fluid to center, to cause good radial direction
Mixed effect, and play the role of sufficient flue gas even distribution and reach fine dispersion and well-mixed purpose between fluid.
It is different according to the load of system boiler operatiopn, the flue gas flow of denitrification apparatus SCR system is entered with regard to the areas You Hen great
Not, unstable so as to cause the mixing of flue gas, can be according to the difference of boiler load after increasing the present apparatus, and adjust its flow-disturbing
Plate angle degree realizes the utilization rate and treatment effect of denitrating system to reach best mixed flow effect.
Compared with prior art, the utility model has at least the following advantages：
By above-mentioned the technical solution of the utility model, before gaseous mixture enters reactor plus a high effective flue gas mixed flow fills
It sets, the angle adjustable of the flue gas flow mixing device enables flue gas to be sufficiently mixed with ammonia, it is ensured that before gaseous mixture enters reactor
It is uniformly mixed, the efficient mixing of flue gas and ammonia shortens at a distance between ammonia-spraying grid and flue, improves denitrating flue gas reaction
Efficiency, the utility model effect is good, quick, with good investment, brings considerable economic benefit for client.
The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not
It is confined to this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should
Subject to the scope of protection of the claims.
Claims (3)
1. a kind of flue gas flow mixing device for SCR denitration system, which is mounted between ammonia-spraying grid and SCR reactors,
It is characterized in that, the device is made of the multiple mixed cells being disposed side by side in hollow flue, the mixed cell includes angle
Axis and the spoiler on the angle axis are spent, wherein the angle axis is rotatably installed in the hollow flue
Interior, the spoiler is the corrugated plating of arc, and the angle axis is arranged at the arc curve node location of spoiler.
2. being used for the flue gas flow mixing device of SCR denitration system as described in claim 1, which is characterized in that the mixed cell
Between between be divided into fixed value.
3. being used for the flue gas flow mixing device of SCR denitration system as described in claim 1, which is characterized in that the angle axis hangs down
Straight to be arranged in hollow flue, angle axis is rotatablely connected by the bearing at both ends and the inner wall of hollow flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721582297.2U CN207786367U (en) | 2017-11-23 | 2017-11-23 | A kind of flue gas flow mixing device for SCR denitration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721582297.2U CN207786367U (en) | 2017-11-23 | 2017-11-23 | A kind of flue gas flow mixing device for SCR denitration system |
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| Publication Number | Publication Date |
|---|---|
| CN207786367U true CN207786367U (en) | 2018-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721582297.2U Active CN207786367U (en) | 2017-11-23 | 2017-11-23 | A kind of flue gas flow mixing device for SCR denitration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109351184A (en) * | 2018-11-30 | 2019-02-19 | 李宜立 | Compound mixing arrangement, SCR denitration equipment and compound spray ammonia mixed method |
-
2017
- 2017-11-23 CN CN201721582297.2U patent/CN207786367U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109351184A (en) * | 2018-11-30 | 2019-02-19 | 李宜立 | Compound mixing arrangement, SCR denitration equipment and compound spray ammonia mixed method |
| CN109351184B (en) * | 2018-11-30 | 2024-04-09 | 浙江大维高新技术股份有限公司 | Composite mixing device, SCR denitration equipment and composite ammonia spraying mixing method |
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