CN107376608A - 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
- Publication number
- CN107376608A CN107376608A CN201710817160.9A CN201710817160A CN107376608A CN 107376608 A CN107376608 A CN 107376608A CN 201710817160 A CN201710817160 A CN 201710817160A CN 107376608 A CN107376608 A CN 107376608A
- Authority
- CN
- China
- Prior art keywords
- spray nozzle
- jet pipe
- burner hearth
- nozzle devices
- devices according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/76—Gas phase processes, e.g. by using aerosols
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0278—Arrangement or mounting of spray heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
- B05B15/68—Arrangements for adjusting the position of spray heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention 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 present invention 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
The present invention relates to a kind of denitrification apparatus, more particularly to a kind of SNCR spray nozzle devices for π type Process In A Tangential Firings.
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.
The content of the invention
It is an object of the invention to provide a kind of SNCR spray nozzle devices for π type Process In A Tangential Firings of NO_x Reduction by Effective.
To achieve the above object, the specific skill of a kind of SNCR spray nozzle devices for π type Process In A Tangential Firings of the invention
Art 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 invention, 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 the spray nozzle device of the present invention；
Fig. 2 a are the distribution maps one of the spray nozzle device of the present invention；
Fig. 2 b are the distribution maps two of the spray nozzle device of the present invention；
Fig. 3 is the structural representation of the nozzle of the present invention；
Fig. 4 is the internal structure schematic diagram of the spray nozzle device of the present invention.
Embodiment
In order to be better understood by the purpose of the present invention, structure and function, below in conjunction with the accompanying drawings, one kind of the present invention is used for
The SNCR spray nozzle devices of 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 spray nozzle devices for π type Process In A Tangential Firings of the present invention, bag
Multiple nozzles 3 are included, are layered respectively arranged in a crossed manner in burner hearth, nozzle 3 is by jet pipe 1 and the supervisor that is fixed on furnace wall (in figure
Do not show) it is connected, denitrification reducing agent, the height for the adjustable in length nozzle 3 that adjustment jet pipe 3 is stretched into burner hearth are received by jet pipe 1
Degree the, so that nitrogen oxides (NO in flue gasX) and ammonia fully contact and be well mixed, improve denitration efficiency, solve 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 corner
In the denitrification apparatus of tangential boiler.
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 the present invention
In, 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 present invention preferably uses double-layer staggered setting nozzle, if
The nozzle 3 for putting the adjacent two layers in burner hearth is in arranged in a crossed manner in the vertical, so that the denitrification reducing agent covering burner hearth that nozzle 3 sprays
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 invention, one kind of the invention are used for π types corner
The SNCR spray nozzle devices of tangential boiler, the purpose of removing nitrogen oxides in effluent can be reached, improve denitration efficiency, can be preferably
Adaptation coal varitation and load variations, service life length, maintenance it is convenient；By set the slideway that protective case is connected with jet pipe with
The height of nozzle is adjusted, in load and coal varitation, enables to denitrification reducing agent in appropriate temperature range and flue gas
In NOXFully reaction, nozzle use double-layer staggered arrangement, ensure that denitrification reducing agent and the NO in flue gasXIt is well mixed
Property；Change for temperature range in Boiler Furnace, adjust the height of nozzle, ensure that NH3Mixed at 800 DEG C~1100 DEG C with flue gas
Close uniform；By setting arrangement of nozzles mode, nozzle height adjust automatically, make the NO in flue gasXFully contact and mix with ammonia
Uniform, raising denitration efficiency is closed, is solved existing due to denitration caused by arrangement of nozzles mode and the change of in-furnace temperature section
The problem of efficiency is low, in the denitrification apparatus that can be widely used for π type Process In A Tangential Firings.
The present invention is further described by specific embodiment above, it should be understood that, here specifically
Description, should not be construed as the restriction to the spirit and scope of the invention, and one of ordinary skilled in the art is reading this explanation
The various modifications made after book to above-described embodiment, belong to the scope that the present invention 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 |
|---|---|---|---|
| CN201710817160.9A CN107376608A (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 |
|---|---|---|---|
| CN201710817160.9A CN107376608A (en) | 2017-09-12 | 2017-09-12 | A kind of SNCR spray nozzle devices for π type Process In A Tangential Firings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107376608A true CN107376608A (en) | 2017-11-24 |
Family
ID=60351605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710817160.9A Pending CN107376608A (en) | 2017-09-12 | 2017-09-12 | A kind of SNCR spray nozzle devices for π type Process In A Tangential Firings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107376608A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111151134A (en) * | 2020-01-22 | 2020-05-15 | 苏州西热节能环保技术有限公司 | A prevent stifled type ammonia injection grid and SCR denitrification facility for coal fired power plant SCR denitration |
| CN112619416A (en) * | 2020-12-16 | 2021-04-09 | 苏州西热节能环保技术有限公司 | Efficient ammonia water direct injection and ammonia spraying system arranged at circular flue at outlet of combustion engine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003017451A (en) * | 2001-06-28 | 2003-01-17 | Dainippon Screen Mfg Co Ltd | Jig for regulating nozzle position, and method for regulating the nozzle position |
| CN201596461U (en) * | 2009-09-23 | 2010-10-06 | 中电投远达环保工程有限公司 | Liquid column spray pipe |
| CN102489137A (en) * | 2011-12-19 | 2012-06-13 | 江苏科行环境工程技术有限公司 | Self-regulation reducing agent injection device suitable for SNCR denitration |
| CN202555168U (en) * | 2012-05-15 | 2012-11-28 | 瓮福（集团）有限责任公司 | Reaction-typesprayer of desulfurization tower |
| CN205897562U (en) * | 2016-06-06 | 2017-01-18 | 江苏凯弘新能源管理有限公司 | Practical device to detection of industry buggy conduction oil boiler denitration warm area |
| CN106823797A (en) * | 2017-02-09 | 2017-06-13 | 北京国能中电节能环保技术股份有限公司 | A kind of ammonia-spraying grid device |
| CN207203819U (en) * | 2017-09-12 | 2018-04-10 | 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 CN201710817160.9A patent/CN107376608A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003017451A (en) * | 2001-06-28 | 2003-01-17 | Dainippon Screen Mfg Co Ltd | Jig for regulating nozzle position, and method for regulating the nozzle position |
| CN201596461U (en) * | 2009-09-23 | 2010-10-06 | 中电投远达环保工程有限公司 | Liquid column spray pipe |
| CN102489137A (en) * | 2011-12-19 | 2012-06-13 | 江苏科行环境工程技术有限公司 | Self-regulation reducing agent injection device suitable for SNCR denitration |
| CN202555168U (en) * | 2012-05-15 | 2012-11-28 | 瓮福（集团）有限责任公司 | Reaction-typesprayer of desulfurization tower |
| CN205897562U (en) * | 2016-06-06 | 2017-01-18 | 江苏凯弘新能源管理有限公司 | Practical device to detection of industry buggy conduction oil boiler denitration warm area |
| CN106823797A (en) * | 2017-02-09 | 2017-06-13 | 北京国能中电节能环保技术股份有限公司 | A kind of ammonia-spraying grid device |
| CN207203819U (en) * | 2017-09-12 | 2018-04-10 | 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111151134A (en) * | 2020-01-22 | 2020-05-15 | 苏州西热节能环保技术有限公司 | A prevent stifled type ammonia injection grid and SCR denitrification facility for coal fired power plant SCR denitration |
| CN111151134B (en) * | 2020-01-22 | 2024-11-15 | 苏州西热节能环保技术有限公司 | A kind of anti-blocking ammonia injection grid and SCR denitrification device for SCR denitrification of coal-fired power plants |
| CN112619416A (en) * | 2020-12-16 | 2021-04-09 | 苏州西热节能环保技术有限公司 | Efficient ammonia water direct injection and ammonia spraying system arranged at circular flue at outlet of combustion engine |
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Application publication date: 20171124 |
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