CN205683837U - A kind of SCR denitration reaction platform - Google Patents
A kind of SCR denitration reaction platform Download PDFInfo
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- CN205683837U CN205683837U CN201620528830.6U CN201620528830U CN205683837U CN 205683837 U CN205683837 U CN 205683837U CN 201620528830 U CN201620528830 U CN 201620528830U CN 205683837 U CN205683837 U CN 205683837U
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- ammonia
- scr denitration
- spray ammonia
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- spray
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Abstract
A kind of SCR denitration reaction platform, there is support frame, support frame is fixed with SCR denitration reactor and some floors ladder, SCR denitration reactor has reactor body, and reactor body has air inlet, air outlet, and is provided with ash bucket in bottom, multilamellar denitrating catalyst it is provided with in reactor body, and connect inlet air stack at inlet port by bent angle flue, inlet air stack is provided with ammonia-gas spraying device, in bent angle flue, is provided with flue gas flow guiding device；Ammonia-gas spraying device includes an ammonia letter shoot and some spray ammonia pipes, every spray ammonia pipe offers several spray ammonia holes arranged vertically, is provided with baffle plate and the deflector in corresponding each spray ammonia hole on spray ammonia pipe, to guarantee that the ammonia of ejection is sufficiently mixed with flue gas；This utility model space layout is compact, it is simple to the upper and lower operation of staff and transporting goods, and is effectively improved the reaction efficiency of SCR denitration reactor, reduces oxynitride and ammonia escape amount, saves reaction cost.
Description
Technical field
This utility model relates to gas denitrifying technology field, especially a kind of SCR denitration reaction platform.
Background technology
Currently, the most widely used gas denitrifying technology of domestic and international power plant is SCR technique.Typically pass through
Build the SCR denitration reaction platform being made up of support frame and SCR denitration reactor, and take off in SCR denitration reactor
Nitre processes, and wherein SCR denitration reactor has reactor body, and reactor body has upper side-inlet and downside air outlet,
And ash bucket it is provided with in bottom, it is provided with multilamellar denitrating catalyst in reactor body, and is connected by bent angle flue at inlet port
Inlet air stack, is provided with ammonia-gas spraying device in inlet air stack, is provided with flue gas flow guiding device in bent angle flue.SCR denitration reactor
Cardinal principle be: under the effect of catalyst, make reducing agent (general ammonia and air gas mixture) and boiler tail cigarette
Nitrogen oxides in gas is sufficiently mixed and reacts, and generates nitrogen and water, reaches denitration purpose.
But, existing SCR denitration reaction platform structure is complicated, it is unreasonable to design, and staff up and down and transports goods
All inconvenient, and must separately set soot blower platform to support each soot blower, not only cost is high, takies substantial amounts of space, and
And owing to the flue gas flow guiding device in the ammonia-gas spraying device being arranged in inlet air stack and bent angle flue designs unreasonable, cause SCR
The denitration efficiency of Benitration reactor is low, the escaping of ammonia rate high, thereby increases denitration reaction cost, also surrounding is caused danger
Evil.
Summary of the invention
The purpose of this utility model seeks to solve current SCR denitration reaction the problems referred to above existing for platform, for this one
Kind space layout is compact, easy to operate, denitration reaction low cost, and the SCR denitration reaction platform that denitration efficiency is high.
Concrete scheme of the present utility model is: a kind of SCR denitration reaction platform, has support frame, solid in support frame
Surely having SCR denitration reactor, and be provided with some floors ladder, SCR denitration reactor has reactor body, and reactor body has
Upper side-inlet and downside air outlet, and ash bucket it is provided with in bottom, it is provided with multilamellar denitrating catalyst in reactor body, and is entering
QI KOU end connects inlet air stack by bent angle flue, is provided with ammonia-gas spraying device, is provided with flue gas in bent angle flue in inlet air stack
Guiding device；It is characterized in that: described ammonia-gas spraying device include an ammonia letter shoot and connect ammonia letter shoot some sprays
Ammonia pipe, offers several spray ammonia holes arranged vertically on every spray ammonia pipe, and spray ammonia hole is the most upwardly disposed, and at spray ammonia
Pipe is provided with baffle plate and the deflector in corresponding each spray ammonia hole, wherein baffle plate be located at spray ammonia hole side and with ammonia in spray ammonia pipe
The flow direction relative, the V-shaped structure of deflector, and be welded and relatively spray the side in ammonia hole on spray ammonia pipe, spray ammonia hole and be positioned at and lead
The inner side of stream plate, and be arranged on the angular bisector of deflector.
The three layers of arrangement in upper, middle and lower in inlet air stack of ammonia pipe is sprayed described in this utility model.
Flue gas flow guiding device described in this utility model includes several flow deflectors being arranged side by side, and flow deflector is put down by two pieces
Plate constitutes doubled-over configuration, and to knuckle α in the range of 130～160 degree, the fold point of each flow deflector is distributed in same straight line
On；On flow deflector, the angle β of flat board and the horizontal plane arranged towards inlet air stack side in the range of 45～50 degree, towards
Some air-vents are offered on the flat board that the inlet port of reactor body is arranged.
Reactor body described in this utility model is provided with several manholes.
Support frame described in this utility model is provided with several soot blowers, each soot blower and every pull-up denox catalyst
In the most positioned opposite, it is achieved the winding-up to denitrating catalyst；Described stair are corresponding with soot blower is arranged in SCR denitration reactor
Both sides.
Support frame described in this utility model is constituted vertical frame structure by some columns and crossbeam, in support frame
Top is equipped with lifting motor.
This utility model space layout is compact, the upper and lower operation of staff and transport goods the most more convenient, by existing
Some ammonia-gas spraying devices improve with flue gas flow guiding device, it is ensured that ammonia is being sufficiently mixed with flue gas (containing oxynitride)
After, it is evenly distributed on denitrating catalyst and carries out catalytic reaction, thus be effectively improved the reaction effect of SCR denitration reactor
Rate, reduces oxynitride (NOx) and ammonia escape amount, saves reaction cost.
Accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present utility model；
Fig. 2 is that the right side of Fig. 1 regards schematic diagram；
Fig. 3 is the cross-sectional view of SCR denitration reactor in this utility model；
Fig. 4 is the main TV structure schematic diagram of ammonia-gas spraying device in this utility model；
Fig. 5 is the upward view of Fig. 4；
Fig. 6 is the close-up schematic view in Fig. 4 at K；
Fig. 7 is the A-A view of Fig. 6；
Fig. 8 is the structural representation of flue gas flow guiding device in this utility model.
In figure: 1 support frame, 2 stair, 3 reactor bodies, 4 air inlets, 5 air outlets, 6 ash buckets,
7 denitrating catalysts, 8 bent angle flues, 9 inlet air stack, 10 ammonia letter shoots, 11 spray ammonia pipes, 12 spray ammonia holes,
13 baffle plates, 14 deflectors, 15 flow deflectors, 16 air-vents, 17 manholes, 18 soot blowers, 19 lifting motors,
20 homogenating plates.
Detailed description of the invention
Seeing Fig. 1-7, this utility model has support frame 1, is fixed with SCR denitration reactor, and sets in support frame 1
Having some floor ladders 2, SCR denitration reactor has reactor body 3, and reactor body 3 has upper side-inlet 4 and downside goes out
Air port 5, and ash bucket 6 it is provided with in bottom, described air outlet 5 is arranged on the sidewall of ash bucket 6, is provided with many in reactor body 3
Pull-up denox catalyst 7, and connect inlet air stack 9, at inlet air stack 9 at the inlet port of reactor body 3 by bent angle flue 8
In be provided with ammonia-gas spraying device, in bent angle flue 8, be provided with flue gas flow guiding device；Described ammonia-gas spraying device includes an ammonia letter shoot 10
With the some spray ammonia pipes 11 being arranged in inlet air stack 9, ammonia letter shoot 10 is connected, often with every spray ammonia pipe 11 respectively
All offering several spray ammonia holes 12 arranged vertically on root spray ammonia pipe 11, spray ammonia hole 12 is the most upwardly disposed, and at spray ammonia
Pipe 11 is provided with baffle plate 13 and the deflector 14 in corresponding each spray ammonia hole, wherein baffle plate 13 be located at spray ammonia hole 12 side and with spray
In ammonia pipe 11, the flow direction of ammonia is relative, the V-shaped structure of deflector 14, and is welded on spray ammonia pipe 11 relative to spray ammonia hole 12
Side, spray ammonia hole 12 is positioned at the inner side of deflector 14, and is arranged on the angular bisector of deflector 14.
Spray ammonia pipe 11 three layers of arrangement in upper, middle and lower in inlet air stack 9 described in the present embodiment, see Fig. 4, Fig. 5.When
When ammonia-gas spraying device is in job state, for one of them spray ammonia hole on spray ammonia pipe 11, flue gas is under deflector 14 acts on
Start shunting, and flow through spray ammonia pipe along the both sides of spray ammonia pipe 11, thus according to the relation of the flow velocity of fluid with pressure, now spray
Air pressure at ammonia hole is more than the both sides air pressure of spray ammonia pipe, thus, when ammonia is from the ejection of spray ammonia hole and perpendicular under the stop of baffle plate 13
When directly flowing up, diverge under the effect of air pressure around, see Fig. 7, ensure that ammonia mixes with the abundant of flue gas
Close.Meanwhile, owing to spray ammonia pipe 11 is arranged in upper, middle and lower three-decker in inlet air stack 9, further ensure that air inlet
In flue 9, ammonia and flue gas is sufficiently mixed.
Seeing Fig. 3, flue gas flow guiding device described in the present embodiment includes several flow deflectors 15 being arranged side by side, flow deflector
15 are constituted doubled-over configuration by two pieces of flat boards, and to knuckle α in the range of 130～160 degree, the fold point of each flow deflector 15 is distributed in
On same straight line, this straight line represents with K in figure 3；The flat board arranged towards inlet air stack 9 side on flow deflector 15 and level
The angle β in face, in the range of 45～50 degree, offers some ventilative on the flat board arranged towards the inlet port of reactor body 3
Hole 16, sees Fig. 8, dissipates process for the flue gas come conveying further.Meanwhile, in the air inlet of reactor body 3
Being additionally provided with homogenating plate 20 at Kou, homogenating plate 20 offers square lattice or the circular hole of some uniform arrangements, homogenating plate 10 is used
In the flue gas in input to reactor body 3 is vertically carried out uniform divided flows process, so that flue gas is uniformly distributed
Denitrating catalyst fully carries out catalytic reaction, so substantially increases the denitration efficiency of SCR denitration reactor, effectively reduce
The escape of nitrogen oxides and ammonia, saved cost, it is to avoid pollution to environment.
Seeing Fig. 1, reactor body 3 described in the present embodiment is provided with several manholes 17, to facilitate staff to examine
Repair.
Seeing Fig. 2, support frame 1 described in the present embodiment is provided with several soot blowers 18, and each soot blower 18 is with every
Pull-up denox catalyst 7 is in the most positioned opposite, and wherein denitrating catalyst 7 is provided with three layers, and every pull-up denox catalyst is respectively honeycomb
Formula catalyst or corrugated plate dst catalyst.The blowing head of soot blower 18 realizes denitrating catalyst 7 in stretching to reactor body 3
Winding-up, to remove on denitrating catalyst 7 dust of attachment；Described stair 2 are corresponding with soot blower 18 to be arranged in SCR denitration and reacts
The both sides of device.
Support frame 1 described in the present embodiment is constituted vertical frame structure by some columns and crossbeam, in support frame 1
Top is equipped with lifting motor 19, to facilitate staff's hoisting heavy.
Claims (6)
1. a SCR denitration reaction platform, has support frame, is fixed with SCR denitration reactor, and is provided with in support frame
Some floors ladder, SCR denitration reactor has reactor body, and reactor body has upper side-inlet and downside air outlet,
And ash bucket it is provided with in bottom, it is provided with multilamellar denitrating catalyst in reactor body, and is connected by bent angle flue at inlet port
Inlet air stack, is provided with ammonia-gas spraying device in inlet air stack, is provided with flue gas flow guiding device in bent angle flue；It is characterized in that: described
Ammonia-gas spraying device includes an ammonia letter shoot and connects some spray ammonia pipes of ammonia letter shoot, offers on every spray ammonia pipe
The spray ammonia hole that several are arranged vertically, spray ammonia hole is the most upwardly disposed, and is provided with corresponding each spray ammonia hole on spray ammonia pipe
Baffle plate and deflector, wherein baffle plate is located at the side in spray ammonia hole and relative with the flow direction of ammonia in spray ammonia pipe, and deflector is V-shaped
Structure, and it is welded on spray ammonia pipe relative to the side in spray ammonia hole, spray ammonia hole is positioned at the inner side of deflector, and is arranged in deflector
Angular bisector on.
A kind of SCR denitration reaction platform the most according to claim 1, is characterized in that: described spray ammonia pipe is in inlet air stack
Three layers of arrangement in upper, middle and lower.
A kind of SCR denitration reaction platform the most according to claim 1, is characterized in that: if described flue gas flow guiding device includes
Dry the flow deflector being arranged side by side, flow deflector is constituted doubled-over configuration by two pieces of flat boards, to knuckle α in the range of 130～160 degree,
The fold point of each flow deflector is distributed on same straight line；On flow deflector, towards inlet air stack side arrange flat board with
The angle β of horizontal plane, in the range of 45～50 degree, the flat board that the inlet port of orientating reaction device body is arranged offers some
Air-vent.
A kind of SCR denitration reaction platform the most according to claim 1, is characterized in that: if described reactor body is provided with
Dry manhole.
A kind of SCR denitration reaction platform the most according to claim 1, is characterized in that: described support frame is provided with some
Individual soot blower, each soot blower and every pull-up denox catalyst are in the most positioned opposite, it is achieved the winding-up to denitrating catalyst；Described
The stair both sides that are arranged in SCR denitration reactor corresponding with soot blower.
A kind of SCR denitration reaction platform the most according to claim 1, is characterized in that: described support frame is by some columns
Vertical frame structure is constituted, at the top of support frame equipped with lifting motor with crossbeam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620528830.6U CN205683837U (en) | 2016-06-03 | 2016-06-03 | A kind of SCR denitration reaction platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620528830.6U CN205683837U (en) | 2016-06-03 | 2016-06-03 | A kind of SCR denitration reaction platform |
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| Publication Number | Publication Date |
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| CN205683837U true CN205683837U (en) | 2016-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620528830.6U Active CN205683837U (en) | 2016-06-03 | 2016-06-03 | A kind of SCR denitration reaction platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008144A (en) * | 2017-05-23 | 2017-08-04 | 国电科学技术研究院 | A kind of device and denitration method for flue gas for realizing SCR denitrating flue gas multistage spray ammonia |
-
2016
- 2016-06-03 CN CN201620528830.6U patent/CN205683837U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008144A (en) * | 2017-05-23 | 2017-08-04 | 国电科学技术研究院 | A kind of device and denitration method for flue gas for realizing SCR denitrating flue gas multistage spray ammonia |
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