CN207203819U - A kind of SNCR spray nozzle devices for π type Process In A Tangential Firings - Google Patents
A kind of SNCR spray nozzle devices for π type Process In A Tangential Firings Download PDFInfo
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- CN207203819U CN207203819U CN201721163583.5U CN201721163583U CN207203819U CN 207203819 U CN207203819 U CN 207203819U CN 201721163583 U CN201721163583 U CN 201721163583U CN 207203819 U CN207203819 U CN 207203819U
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- spray nozzle
- jet pipe
- burner hearth
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Abstract
The utility model discloses a kind of SNCR spray nozzle devices for π type Process In A Tangential Firings, it is arranged in boiler and is used to spray denitrification reducing agent into burner hearth, including multiple nozzles (3), it is layered respectively arranged in a crossed manner in burner hearth, nozzle (3) is connected by jet pipe (1) with the supervisor being fixed on furnace wall receives denitrification reducing agent, and the height for the adjustable in length nozzle (3) that adjustment jet pipe (1) is stretched into burner hearth is so that nitrogen oxides and ammonia in flue gas uniformly mix.The utility model makes the NO in flue gas by setting arrangement of nozzles mode, nozzle height adjust automaticallyXFully contact and be well mixed with ammonia, improve denitration efficiency.
Description
Technical field
It the utility model is related to a kind of denitrification apparatus, more particularly to a kind of SNCR nozzles for π type Process In A Tangential Firings
Device.
Background technology
At present, SNCR method (SNCR) turns into means of flue gas desulfurization of power plant common technology, without catalyst
Under effect, reacted in the nitrogen oxides for being adapted to spray into reducing agent and flue gas in " temperature window " of denitration reaction and generate nothing
Harmful nitrogen and water.Reducing agent sprays into the region that fire box temperature is 850 DEG C~1100 DEG C, rapid thermal decomposition NH3, and in flue gas
NOXReaction generation N2And water.
Currently, SNCR technologies have floor space small, are suitable for old Transformation of Unit, reduced investment, and operating cost is more low excellent
Point, but because flue gas flow rate is fast, dust content is high, spraying into reducing agent can only have small part to occur instead with the nitrogen oxides in flue gas
Should, and then cause denitration efficiency low, outlet nitrogen concentration is uneven, and the escaping of ammonia rate is high, the problems such as causing water-wall corrosion.
Utility model content
The purpose of this utility model is that the SNCR nozzles for π type Process In A Tangential Firings for providing a kind of NO_x Reduction by Effective fill
Put.
To achieve the above object, the tool of a kind of SNCR spray nozzle devices for π type Process In A Tangential Firings of the present utility model
Body technique scheme is：
A kind of SNCR spray nozzle devices for π type Process In A Tangential Firings, it is arranged in boiler de- for being sprayed into burner hearth
Nitre reducing agent, including multiple nozzles, are layered arranged in a crossed manner in burner hearth respectively, and nozzle passes through jet pipe and the master that is fixed on furnace wall
Pipe, which is connected, receives denitrification reducing agent, and the height for the adjustable in length nozzle that adjustment jet pipe is stretched into burner hearth is so that in flue gas
NOXUniformly mixed with ammonia.
Further, the outer cover of jet pipe is provided with protective case, and jet pipe is fixed together with protective case by slideway.
Further, protective case is fire resistant wear prevention material.
Further, slideway is connected with electric device, and electric device can control slideway to adjust the length that jet pipe is stretched into burner hearth
Degree.
Further, temperature-detecting device is provided with spray nozzle device to be connected, temperature-detecting device is used to detect warm in boiler
The section change of degree, and be connected with electric device, the corresponding length for driving electric device adjustment jet pipe to stretch into burner hearth.
Further, the nozzle for being arranged on adjacent two layers in burner hearth is in arranged in a crossed manner in the vertical, so that nozzle ejection is de-
Nitre reducing agent covering burner hearth cross section.
Further, nozzle is twist with anti-clogging.
Further, pressure-detecting device, flow detector and device for detecting length are provided with jet pipe.
Further, jet pipe and slideway are corrosion resistant stainless steel material.
A kind of the advantages of SNCR spray nozzle devices for π type Process In A Tangential Firings of the present utility model, is：
1) purpose of removing nitrogen oxides in effluent can be reached, improve denitration efficiency, ature of coal change can be well adapted to
Change and load variations, service life length, maintenance are convenient；
2) by setting the slideway that protective case is connected with jet pipe to adjust the height of nozzle, in load and coal varitation,
Enable to NO of the denitrification reducing agent in appropriate temperature range and flue gasXFully reaction, nozzle use double-layer staggered cloth
Put, ensure that denitrification reducing agent and the NO in flue gasXMixing uniformity；
3) for temperature range change in Boiler Furnace, the height of nozzle is adjusted, ensure that NH3At 800 DEG C~1100 DEG C
It is well mixed with flue gas；
4) by setting arrangement of nozzles mode, nozzle height adjust automatically, the NO in flue gas is madeXFully contacted simultaneously with ammonia
It is well mixed, denitration efficiency is improved, is solved existing due to being taken off caused by arrangement of nozzles mode and the change of in-furnace temperature section
The problem of nitre efficiency is low, in the denitrification apparatus that can be widely used for π type Process In A Tangential Firings.
Brief description of the drawings
Fig. 1 is the structural representation of spray nozzle device of the present utility model；
Fig. 2 a are the distribution maps one of spray nozzle device of the present utility model；
Fig. 2 b are the distribution maps two of spray nozzle device of the present utility model；
Fig. 3 is the structural representation of nozzle of the present utility model；
Fig. 4 is the internal structure schematic diagram of spray nozzle device of the present utility model.
Embodiment
In order to be better understood by the purpose of this utility model, structure and function, below in conjunction with the accompanying drawings, to of the present utility model
A kind of SNCR spray nozzle devices for π type Process In A Tangential Firings do further detailed description.
As shown in Figures 1 to 4, it is shown as a kind of SNCR nozzles dress for π type Process In A Tangential Firings of the present utility model
Put, including multiple nozzles 3, be layered respectively arranged in a crossed manner in burner hearth, nozzle 3 passes through jet pipe 1 and the supervisor being fixed on furnace wall
(not shown) is connected, and denitrification reducing agent, the adjustable in length nozzle 3 that adjustment jet pipe 3 is stretched into burner hearth are received by jet pipe 1
Height so that the nitrogen oxides (NO in flue gasX) and ammonia fully contact and be well mixed, improve denitration efficiency, solve
It is existing due to arrangement of nozzles mode and in-furnace temperature section change caused by denitration efficiency it is low the problem of, can be widely used for π types
In the denitrification apparatus of Process In A Tangential Firing.
Further, the outer cover of jet pipe 1 is provided with protective case 2, and jet pipe 1 is fixedly connected on one with protective case 2 by slideway 4
Rise, slideway 4 is connected with electric device, and electric device can control slideway to adjust the length that jet pipe 1 is stretched into burner hearth.In this practicality
In new, protective case 2 is fire resistant wear prevention material, it is preferred to use abrasion-proof stainless steel 310s is made.
Further, temperature-detecting device is provided with spray nozzle device to be connected, temperature-detecting device is used to detect warm in boiler
The section change of degree, and be connected with electric device, the corresponding length for driving electric device adjustment jet pipe 1 to stretch into burner hearth
(height of nozzle 3), to ensure NH3It is well mixed at 800 DEG C~1100 DEG C with flue gas
Further, as shown in Figure 2 a and 2 b, the spray nozzle device in the utility model is preferably sprayed using double-layer staggered set
Mouth, the nozzle 3 for being arranged on adjacent two layers in burner hearth is in arranged in a crossed manner in the vertical, so that the denitrification reducing agent that nozzle 3 sprays is covered
Lid burner hearth cross section.Wherein, nozzle 3 is twist with anti-clogging.
Further, pressure-detecting device, flow detector and device for detecting length are provided with jet pipe 2.
Further, jet pipe 2, slideway 4 are made with connected components using corrosion resistant stainless steel.
A kind of SNCR spray nozzle devices for π type Process In A Tangential Firings of the present utility model, a kind of use of the present utility model
In the SNCR spray nozzle devices of π type Process In A Tangential Firings, the purpose of removing nitrogen oxides in effluent can be reached, improve denitration effect
Rate, coal varitation and load variations can be well adapted to, service life length, maintenance is conveniently；By setting protective case to connect with jet pipe
The slideway connect is to adjust the height of nozzle, in load and coal varitation, enables to denitrification reducing agent in appropriate temperature
Section and the NO in flue gasXFully reaction, nozzle use double-layer staggered arrangement, ensure that denitrification reducing agent and the NO in flue gasX's
Mixing uniformity；Change for temperature range in Boiler Furnace, adjust the height of nozzle, ensure that NH3At 800 DEG C~1100 DEG C
It is well mixed with flue gas；By setting arrangement of nozzles mode, nozzle height adjust automatically, make the NO in flue gasXIt is abundant with ammonia
Contact and be well mixed, improve denitration efficiency, solve existing because arrangement of nozzles mode and the change of in-furnace temperature section are led
The problem of denitration efficiency of cause is low, in the denitrification apparatus that can be widely used for π type Process In A Tangential Firings.
The utility model is further described by specific embodiment above, it should be understood that, have here
The description of body, should not be construed as the restriction to spirit and scope of the present utility model, and one of ordinary skilled in the art is readding
The various modifications made after reader specification to above-described embodiment, belong to the scope that the utility model is protected.
Claims (9)
1. a kind of SNCR spray nozzle devices for π type Process In A Tangential Firings, it is arranged in boiler and is used to spray denitration into burner hearth
Reducing agent, it is characterised in that including multiple nozzles (3), be layered respectively arranged in a crossed manner in burner hearth, nozzle (3) passes through jet pipe (1)
It is connected with the supervisor being fixed on furnace wall and receives denitrification reducing agent, the adjustable in length spray that adjustment jet pipe (1) is stretched into burner hearth
The height of mouth (3) is so that nitrogen oxides and ammonia in flue gas uniformly mix.
2. SNCR spray nozzle devices according to claim 1, it is characterised in that the outer cover of jet pipe (1) is provided with protective case
(2), jet pipe (1) is fixed together with protective case (2) by slideway (4).
3. SNCR spray nozzle devices according to claim 2, it is characterised in that protective case (2) is fire resistant wear prevention material.
4. SNCR spray nozzle devices according to claim 2, it is characterised in that slideway is connected with electric device, electric device
Slideway can control to adjust the length that jet pipe (1) is stretched into burner hearth.
5. SNCR spray nozzle devices according to claim 3, it is characterised in that temperature-detecting device is provided with spray nozzle device
It is connected, temperature-detecting device is used for the section change for detecting pot in-furnace temperature, and is connected with electric device, corresponding driving electricity
The length that dynamic device adjustment jet pipe (1) is stretched into burner hearth.
6. SNCR spray nozzle devices according to claim 1, it is characterised in that be arranged on the nozzle of adjacent two layers in burner hearth
(3) it is in arranged in a crossed manner in the vertical, so that the denitrification reducing agent covering burner hearth cross section that nozzle (3) sprays.
7. SNCR spray nozzle devices according to claim 1, it is characterised in that nozzle (3) is twist with anti-clogging.
8. SNCR spray nozzle devices according to claim 1, it is characterised in that be provided with jet pipe (1) pressure-detecting device,
Flow detector and device for detecting length.
9. SNCR spray nozzle devices according to claim 1, it is characterised in that jet pipe (1), with slideway (4) be corrosion-resistant
Stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721163583.5U CN207203819U (en) | 2017-09-12 | 2017-09-12 | A kind of SNCR spray nozzle devices for π type Process In A Tangential Firings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721163583.5U CN207203819U (en) | 2017-09-12 | 2017-09-12 | A kind of SNCR spray nozzle devices for π type Process In A Tangential Firings |
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| Publication Number | Publication Date |
|---|---|
| CN207203819U true CN207203819U (en) | 2018-04-10 |
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ID=61824162
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721163583.5U Active CN207203819U (en) | 2017-09-12 | 2017-09-12 | A kind of SNCR spray nozzle devices for π type Process In A Tangential Firings |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107376608A (en) * | 2017-09-12 | 2017-11-24 | 北京国能中电节能环保技术股份有限公司 | A kind of SNCR spray nozzle devices for π type Process In A Tangential Firings |
-
2017
- 2017-09-12 CN CN201721163583.5U patent/CN207203819U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107376608A (en) * | 2017-09-12 | 2017-11-24 | 北京国能中电节能环保技术股份有限公司 | A kind of SNCR spray nozzle devices for π type Process In A Tangential Firings |
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