CN208260527U - One kind being used for SNCR denitration Double layer high efficient atomizing lance - Google Patents
One kind being used for SNCR denitration Double layer high efficient atomizing lance Download PDFInfo
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- CN208260527U CN208260527U CN201820642564.9U CN201820642564U CN208260527U CN 208260527 U CN208260527 U CN 208260527U CN 201820642564 U CN201820642564 U CN 201820642564U CN 208260527 U CN208260527 U CN 208260527U
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- reducing agent
- gun body
- nozzle
- double layer
- high efficient
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Abstract
The utility model discloses one kind to be used for SNCR denitration Double layer high efficient atomizing lance; including compressed air inlet, the import of urea liquid reducing agent, cooling wind inlet, nozzle and gun body; the inside of gun body opposes be provided with reducing agent liquid pipe along its length; the inside opposition of nozzle offers spray orifice; the spray orifice is connected to the reducing agent liquid pipe respectively; nozzle is pyramidal structure, and the outer sheath of gun body is equipped with protection sleeve pipe；A piece reducing agent liquid pipe is changed to two by the utility model, and nozzle is designed as the structure with cone angle, and after this improvement structure, the projected area of reducing agent atomized liquid is obviously increased, and atomization liquid level oneself is divided into two layers, is equivalent to the atomization liquid level that two spray guns come out；The atomisation area of reducing agent drop and the increase of the number of plies, the increase of spray distance, so that the contact area risen between flue gas in reducing agent drop and burner hearth increases, reaction effect is more preferable, effectively improves the denitration reaction efficiency of reducing agent and flue gas.
Description
Technical field
The utility model belongs to atomizing lance technical field, and in particular to one kind is for the atomization spray of SNCR denitration Double layer high efficient
Rifle.
Background technique
In recent years, as the rapidly growth of China's thermoelectricity installed capacity, thermoelectricity NOx discharge increase year by year, NOx is had become
One of most important atmosphere pollution in China at present.Scholarly forecast, the reinforcement with China to SOx emission control, NOx is to acid rain
Influence will gradually catch up with even more than SOx.Nitrogen oxides (NOx) is formed as nitrogen and oxygen in very high temperature
In conjunction with the technology for controlling NOx in the world includes the generation technique for avoiding NOx in boiler in burning as far as possible and the row after NOx generation
Except technology.SNCR technology is the furnace injection technique of non-catalyst, and the mid-80 SNCR technology is researched and developed successfully in foreign countries, the technology
Operating experience be successfully applied to 600-800MW grade coal unit so far, principle is in furnace injection ammonia, urea
Equal chemical reducing agents be allowed to the reaction of nitrogen oxides in flue gas, convert it into dinitrogen N2 and water H2O.
Existing SNCR denitration technology is gone back due to structure type of atomizing lance etc. through what atomizing lance atomization sprayed
That there are distribution areas in boiler is small for former agent drop, and the short situation of spray distance, the presence of these problems leads to itself and boiler
Rising flue gas in first flue effectively cannot adequately react, and be unfavorable for improving the removal efficiency of oxides of nitrogen gas, thus
It is proposed that a kind of be used for SNCR denitration Double layer high efficient atomizing lance.
Summary of the invention
The purpose of this utility model is to provide one kind to be used for SNCR denitration Double layer high efficient atomizing lance, to solve above-mentioned back
The existing SNCR denitration technology proposed in scape technology is atomized through atomizing lance and is sprayed due to structure type of atomizing lance etc.
There are distribution areas in boiler small, the short problem of spray distance of reducing agent drop out.
To achieve the above object, the utility model provides the following technical solutions: one kind being used for SNCR denitration Double layer high efficient mist
Change spray gun, including compressed air inlet, the import of urea liquid reducing agent, cooling wind inlet, nozzle and gun body, the nozzle
It is fixed on the head end of the gun body, the compressed air inlet is set to the tail end of the gun body, the cooling wind
Import is set to the outside of the gun body, and the inside of the gun body opposes be provided with reducing agent liquid along its length
The inside opposition of pipe, the nozzle offers spray orifice, and the spray orifice is connected to the reducing agent liquid pipe respectively, and the nozzle is cone
The outer sheath of shape structure, the gun body is equipped with protection sleeve pipe.
Preferably, the inner tail end of the gun body is provided with mixing chamber, and the compressed air inlet, the urea are molten
The import of liquid reducing agent and the reducing agent liquid pipe are connected to by the mixing chamber.
Preferably, the end of the protection sleeve pipe is provided with ring flange, and the protection sleeve pipe passes through with the gun body
Ring flange is fixedly connected.
Preferably, the protection sleeve pipe and the gun body interval are arranged, and the inner wall of the protection sleeve pipe with it is described
Cooling wind runner is formed between the outer wall of gun body, the cooling wind inlet is connected to the cooling wind runner.
Preferably, the head end of the gun body is fixed with fixed ring, offers at the inner wall of the gun body and institute
The corresponding fixed groove of fixed ring is stated, is provided with sealing ring on the outside of the fixed ring.
Compared with prior art, the utility model has the beneficial effects that
(1) the utility model structure is simple, easy to use, is easily installed, and removal efficiency is high, and spray distance is long；
(2) liquid pipe in spray gun is changed to two by the utility model, and the atomizing nozzle design of front end is with cone angle
Structure.After experiment and instrument analysis, after this improvement structure, the projected area of reducing agent atomized liquid is obviously increased, mist
Change being divided into two layers for liquid level oneself, is equivalent to the atomization liquid level that two spray guns come out；The atomisation area and the number of plies of reducing agent drop
Increase, the increase of spray distance so that in reducing agent drop and burner hearth rise flue gas between contact area increase, reaction
Effect is more preferable, effectively improves the denitration reaction efficiency of reducing agent and flue gas.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the spray head enlarged structure schematic diagram of the utility model；
Fig. 3 is the portion the A enlarged structure schematic diagram of Fig. 1 of the utility model；
In figure: 1, compressed air inlet；2, urea liquid reducing agent import；3, cooling wind inlet；4, reducing agent liquid pipe；5,
Nozzle；6, protection sleeve pipe；7, ring flange；8, gun body；9, mixing chamber；10, spray orifice；11, fixed ring；12, sealing ring；13,
Fixed groove；14, cooling wind runner.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Please refer to Fig. 1, Fig. 2 and Fig. 3, the utility model provides a kind of technical solution: one kind is double-deck high for SNCR denitration
Imitate atomizing lance, including compressed air inlet 1, urea liquid reducing agent import 2, cooling wind inlet 3, nozzle 5 and gun body
8, nozzle 5 is fixed on the head end of gun body 8, and compressed air inlet 1 is set to the tail end of gun body 8, and cooling wind inlet 3 is set
It is placed in the outside of gun body 8, the inside of gun body 8 opposes along its length is provided with reducing agent liquid pipe 4, nozzle 5
Inside opposition offers spray orifice 10, and spray orifice 10 is connected to reducing agent liquid pipe 4 respectively, and nozzle 5 is pyramidal structure, gun body 8
Outer sheath is equipped with protection sleeve pipe 6.
For the ease of compressed air inlet 1, the connection of urea liquid reducing agent import 2, to facilitate the cooling of reducing agent, this
In embodiment, it is preferred that the inner tail end of gun body 8 is provided with mixing chamber 9, compressed air inlet 1, urea liquid reducing agent
Import 2 and reducing agent liquid pipe 4 are connected to by mixing chamber 9.
For the ease of the connection of protection sleeve pipe 6 and gun body 8, and connection is more stable, in the present embodiment, it is preferred that
The end of protection sleeve pipe 6 is provided with ring flange 7, and protection sleeve pipe 6 is fixedly connected with gun body 8 by ring flange 7.
For the ease of the inflow of cooling wind, and inflow is more uniform, in the present embodiment, it is preferred that protection sleeve pipe 6 and spray gun
Ontology 8 interval setting, and between the inner wall of protection sleeve pipe 6 and the outer wall of gun body 8 formed cooling wind runner 14, cooling wind into
Mouth 3 is connected to cooling wind runner 14.
For the ease of the sealed connection of protection sleeve pipe 6 and gun body 8, cooling wind is avoided to leak, in the present embodiment, preferably
, the head end of gun body 8 is fixed with fixed ring 11, offers at the inner wall of gun body 8 corresponding with fixed ring 11 solid
Determine groove 13, the outside of fixed ring 11 is provided with sealing ring 12.
The working principle and process for using of the utility model: in use, be suitble to denitration reaction " temperature window " under from
Nitrogen oxides in flue gas is reduced to harmless nitrogen to penetrating reducing agent inside gun body 8 by urea liquid reducing agent import 2
Gas and water, while cooling wind is sprayed into from cooling wind inlet 3, during which, compressed air inlet 1 sprays into compressed air, provides low-voltage ring
Border, sealing ring 12 is flexible material, on the one hand under the premise of not influencing protection sleeve pipe 6 and 5 stable connection of nozzle, the company of reduction
Rigidity is connect, on the other hand, can reduce the rate in cooling wind outflow cooling airflow road 14, is made cooling abundant；
A reducing agent liquid pipe 4 in gun body 8 is changed to two, the nozzle 5 of front end is designed as the structure with cone angle,
After this improvement structure, the projected area of reducing agent atomized liquid is obviously increased, and atomization liquid level oneself is divided into two layers, quite
In the atomization liquid level that two spray guns come out；The atomisation area of reducing agent drop and the increase of the number of plies, the increase of spray distance, so that
The contact area risen between flue gas in reducing agent drop and burner hearth increases, and reaction effect is more preferable, effectively improves reduction
The denitration reaction efficiency of agent and flue gas.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (5)
1. one kind is used for SNCR denitration Double layer high efficient atomizing lance, including compressed air inlet (1), urea liquid reducing agent import
(2), cooling wind inlet (3), nozzle (5) and gun body (8), it is characterised in that: the nozzle (5) is fixed on the spray gun sheet
The head end of body (8), the compressed air inlet (1) are set to the tail end of the gun body (8), the cooling wind inlet (3)
It is set to the outside of the gun body (8), the inside of the gun body (8) opposes along its length is provided with reducing agent
Liquid pipe (4), the nozzle (5) inside opposition offers spray orifice (10), the spray orifice (10) respectively with the reducing agent liquid pipe
(4) it is connected to, the nozzle (5) is pyramidal structure, and the outer sheath of the gun body (8) is equipped with protection sleeve pipe (6).
2. according to claim 1 a kind of for SNCR denitration Double layer high efficient atomizing lance, it is characterised in that: the spray gun
The inner tail end of ontology (8) is provided with mixing chamber (9), the compressed air inlet (1), the urea liquid reducing agent import
(2) and the reducing agent liquid pipe (4) is connected to by the mixing chamber (9).
3. according to claim 1 a kind of for SNCR denitration Double layer high efficient atomizing lance, it is characterised in that: the protection
The end of casing (6) is provided with ring flange (7), and the protection sleeve pipe (6) and the gun body (8) are solid by ring flange (7)
Fixed connection.
4. according to claim 1 a kind of for SNCR denitration Double layer high efficient atomizing lance, it is characterised in that: the protection
Casing (6) and the gun body (8) interval are arranged, and the inner wall of the protection sleeve pipe (6) and the gun body (8) is outer
Cooling wind runner (14) are formed between wall, the cooling wind inlet (3) is connected to the cooling wind runner (14).
5. according to claim 1 a kind of for SNCR denitration Double layer high efficient atomizing lance, it is characterised in that: the spray gun
The head end of ontology (8) is fixed with fixed ring (11), is offered at the inner wall of the gun body (8) and the fixed ring (11) phase
Corresponding fixed groove (13) is provided with sealing ring (12) on the outside of the fixed ring (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820642564.9U CN208260527U (en) | 2018-05-02 | 2018-05-02 | One kind being used for SNCR denitration Double layer high efficient atomizing lance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820642564.9U CN208260527U (en) | 2018-05-02 | 2018-05-02 | One kind being used for SNCR denitration Double layer high efficient atomizing lance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208260527U true CN208260527U (en) | 2018-12-21 |
Family
ID=64680995
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820642564.9U Expired - Fee Related CN208260527U (en) | 2018-05-02 | 2018-05-02 | One kind being used for SNCR denitration Double layer high efficient atomizing lance |
Country Status (1)
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| CN (1) | CN208260527U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110314783A (en) * | 2019-07-24 | 2019-10-11 | 山东钢铁集团有限公司 | A kind of rifling accelerating type atomizing lance and operating method |
| CN111450703A (en) * | 2020-05-09 | 2020-07-28 | 中国华能集团有限公司 | High-temperature ammonia-spraying denitration device for coal-fired boiler |
| CN112870956A (en) * | 2021-01-18 | 2021-06-01 | 广州华科环保工程有限公司 | SNCR high-temperature-resistant two-stage atomizing spray gun and atomizing method thereof |
-
2018
- 2018-05-02 CN CN201820642564.9U patent/CN208260527U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110314783A (en) * | 2019-07-24 | 2019-10-11 | 山东钢铁集团有限公司 | A kind of rifling accelerating type atomizing lance and operating method |
| CN110314783B (en) * | 2019-07-24 | 2023-07-28 | 山东钢铁集团有限公司 | Rifling acceleration type atomizing spray gun and operation method |
| CN111450703A (en) * | 2020-05-09 | 2020-07-28 | 中国华能集团有限公司 | High-temperature ammonia-spraying denitration device for coal-fired boiler |
| CN112870956A (en) * | 2021-01-18 | 2021-06-01 | 广州华科环保工程有限公司 | SNCR high-temperature-resistant two-stage atomizing spray gun and atomizing method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |