CN106823760A - A kind of multitube path length spray gun for thermal power plant's SNCR denitration system - Google Patents
A kind of multitube path length spray gun for thermal power plant's SNCR denitration system Download PDFInfo
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- CN106823760A CN106823760A CN201710171126.9A CN201710171126A CN106823760A CN 106823760 A CN106823760 A CN 106823760A CN 201710171126 A CN201710171126 A CN 201710171126A CN 106823760 A CN106823760 A CN 106823760A
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- steel pipe
- layer steel
- spray gun
- multitube
- power plant
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- 239000007921 spray Substances 0.000 title claims abstract description 51
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 53
- 239000010959 steel Substances 0.000 claims abstract description 53
- 239000000498 cooling water Substances 0.000 claims abstract description 29
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 20
- 239000010935 stainless steel Substances 0.000 claims abstract description 20
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000004202 carbamide Substances 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 230000004308 accommodation Effects 0.000 claims abstract description 3
- 239000002826 coolant Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 13
- 239000003546 flue gas Substances 0.000 description 13
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
-
- 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
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2067—Urea
-
- 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
Landscapes
- 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)
- Nozzles (AREA)
Abstract
The present invention provides a kind of multitube path length spray gun for thermal power plant's SNCR denitration system, simple and light, reasonable in design ingenious, it is easy to manufacture, and the weight and degree of disturbing increment that length increase brings are small.It includes three steel pipes of coaxial nested encryptions, and three front ends of steel pipe seal the gap set and between adjacent steel pipe and form accommodation space；The rear end of innermost layer steel pipe is passed through urea liquid and forms urea liquid pipeline, and the rear end of intermediate layer steel pipe is passed through compressed air and forms compressed air line, and the rear end of outermost layer steel pipe is passed through cooling water and forms cooling water pipeline；Outermost layer steel pipe disposed outside has multiple nozzles, and urea liquid pipeline is connected with multiple nozzles respectively with compressed air line；Intermediate layer steel pipe and outermost layer steel pipe are welded using the stainless steel tube of multistage different wall；Wall thickness reduces and keeps the external diameter of each section of tube wall constant paragraph by paragraph from back to front.
Description
Technical field
The present invention relates to thermal power plant's SNCR denitration technology, specially a kind of multi-pipe-diameter for thermal power plant's SNCR denitration system
Spray gun long.
Background technology
Selective non-catalytic reduction (SNCR) be reducing agent (ammoniacal liquor, urea, ammonia) be injected to 880 DEG C-
In 1050 DEG C of regions, it is not necessary to catalyst, the NOx in flue gas optionally can be reduced into harmless N by reducing agent2And H2O。
SNCR techniques can realize that the construction period is short, and investment and operating cost are than it with burner hearth as reactor by the transformation to boiler
Its gas denitrifying technology is low, is suitable for the transformation to medium small boiler.The controllable NOx emission reduction by 20 of modern SNCR technologies~
50%, as unit capacity increases, size of burner hearth and unit load excursion expand, and increased reaction temperature window with reduction
The mixed uniformly control difficulty of agent, causes denitration efficiency to reduce.
One typical SNCR system by reducing agent storage, conveying and injection apparatus constitute, wherein injection apparatus is
The nucleus equipment of SNCR systems, its performance has a significant impact to the denitration efficiency of SNCR systems.At present both at home and abroad for SNCR sprays
Injection device has carried out numerous studies, a kind of multiinjector spray with two-stage diffusion ratio as disclosed in Chinese patent CN102896054A
Rifle, and a kind of spray gun being applied in SNCR denitration device disclosed in Chinese patent CN204320086U, pipette tips diameter are less than
25mm, between furnace wall cooling being inserted directly into, simple installation.And for example a kind of SNCR disclosed in Chinese patent CN205361046U takes off
Nitre system reducing agent injection apparatus, it enters line replacement, realizes injection using process water to the reducing agent remained in injection branch road
The isolation maintenance of device.
Inside SNCR spray guns insertion burner hearth, with flue gas directly contact, abrasion and high temperature corrosion greatly constrain making for spray gun
With the life-span, on the other hand, with the increase of furnace volume, the reducing agent of SNCR lance ejections is difficult to reach burner hearth middle part, it is impossible to
Fully, uniformly mix with flue gas, cause SNCR techniques denitration efficiency to decline, the escaping of ammonia increases.To alleviate SNCR spray guns in cigarette
Abrasion in gas, Chinese patent CN205361748U discloses a kind of two-fluid streamline type spray gun for SNCR systems, passes through
Using the outer shower nozzle of streamlined structure, can greatly alleviate pipette tips abrasion；And for example one disclosed in Chinese patent CN205413412U
The abrasionproof injector for SNCR denitration is planted, by the outer surface brushing fire resistant wear prevention ceramic coating in gas phase pipe front end, can
Abrasion of the injector front end in high temperature grey flue gas high is prevented, and reduces injector appearance and size.For the height of SNCR spray guns
Warm etching problem, Chinese patent CN204911212U proposes the denitrating flue gas spray gun that a kind of cylinder is promoted, and it sets cold air
Cold air in standby is entered into guide rod sheath via refrigerator pipe and reduces the temperature of guide rod sheath and guide rod end, so as to prevent it
Burnt out because temperature is too high；A kind of SNCR denitration multiinjector spear injection that and for example Chinese patent CN102160964A is related to
Device, realizes cooling water circulating in spray gun, so as to reduce spray gun temperature by increasing cooling water input and output loop
Degree.
In order to realize being sufficiently mixed for reducing agent and flue gas, Chinese patent CN201445911U discloses one kind and is applied to
The spray gun type bubble atomizing nozzle long of SNCR method denitrating flue gas processes, it is by by gases at high pressure from the cone for spreading all over bubble generator
Shape injecting hole enters in the liquid stream of outer flow passage, and forms the spray orifice ejection that blister is flowed through on spray gun outer tube long, can cover whole anti-
Area is answered, so as to improve the mixed effect of reducing agent and flue gas.And for example a kind of boiler disclosed in Chinese patent CN104384039A takes off
Nitre Multi-nozzle spray gun, spray gun spraying technique after evaporation in rifle using reducing agent, with spraying, uniform, mixing is sufficient
A little.And for example a kind of SNCR denitrating flue gas spray gun disclosed in Chinese patent CN205495328U, employs the nozzle of atomization type,
So that flow adjusting range is larger, the region-wide interior uniform particle sizes of spray shapes, jet length is remote.
In the prior art, with the expansion of furnace cavity size, the inhomogeneities of NOx distributions is also brighter on section of burner hearth
It is aobvious, burner hearth middle part NOx concentration highest, but the reducing agent of conventional lance injection is difficult to arrival burner hearth middle part, so as to constrain reduction
Agent and the mixed effect of flue gas, reduce denitration efficiency.In large-sized unit SNCR techniques, it is to solve reducing agent to increase spray gun length
The maximally effective means of jet length, but the spray gun weight brought of length increase and degree of disturbing increase, and will jeopardize the safe handling of spray gun.
The content of the invention
For problems of the prior art, the present invention provides a kind of multi-pipe-diameter for thermal power plant's SNCR denitration system
Spray gun long, simple and light, reasonable in design ingenious, it is easy to manufacture, the weight and degree of disturbing increment that length increase brings are small.
The present invention is to be achieved through the following technical solutions：
A kind of multitube path length spray gun for thermal power plant's SNCR denitration system, including three steel pipes of coaxial nested encryptions,
Three front ends of steel pipe seal the gap set and between adjacent steel pipe and form accommodation space；The rear end of innermost layer steel pipe is passed through
Urea liquid forms urea liquid pipeline, and the rear end of intermediate layer steel pipe is passed through compressed air and forms compressed air line, outermost layer
The rear end of steel pipe is passed through cooling water and forms cooling water pipeline；Outermost layer steel pipe disposed outside has multiple nozzles, urea liquid pipeline
Connected with multiple nozzles respectively with compressed air line；Intermediate layer steel pipe and outermost layer steel pipe use multistage different wall not
Rust steel-pipe welding is formed；Wall thickness reduces and keeps the external diameter of each section of tube wall constant paragraph by paragraph from back to front.
Preferably, intermediate layer steel pipe and outermost layer steel pipe are welded using the stainless steel tube of three sections of different walls；From
Afterwards forward, first paragraph stainless steel tube wall thickness is 11mm, and length is 5m；Second segment stainless steel tube wall thickness is 7mm, and length is 3.6m；
3rd section of stainless steel tube wall thickness is 3.5mm, and length is 1.4m-3.4m.
Preferably, multiple nozzles of outermost layer steel pipe disposed outside are enterprising in each section of stainless steel tube of different wall by correspondence
Row packet, and the trend that correspondence wall thickness reduces paragraph by paragraph from back to front, the flow of multigroup nozzle also reduce by group.
Preferably, the dividing plate being axially fixed to outside compressed air line is provided with cooling water pipeline, by cooling water
Pipeline is divided into two pipeline up and down of only front end connection, and lower pipeline part sets cooling water inlet, and upper pipeline part sets cooling water
Outlet.
Preferably, also including the adpting flange of fixed innermost layer steel pipe, the rear end of innermost layer steel pipe sets through adpting flange
Put.
Further, the rear end of intermediate layer steel pipe is fixedly connected on flange.
Preferably, the rear end of outermost layer steel pipe is fixed on the steel pipe of intermediate layer by assembly flange, compressed air line
Entrance is arranged between adpting flange and assembly flange.
Compared with prior art, the present invention has following beneficial technique effect：
Multitube path length spray gun of the present invention uses compound steel pipe nested encryptions, and innermost layer is urea liquid pipeline, in
Between one layer be compressed air line, outermost layer be cooling water circulation pipeline, simple structure, it is easy to fabricate.Urea liquid pipe
Road seals with compressed air line front end, is independent of each other between each pipeline.Compressed air line and cooling water pipeline are used
The stainless steel tube that wall thickness is gradually reduced is welded, and can significantly reduce spray gun weight, increases spray gun length so as to improve reducing agent
Jet length.
Further, three kinds of nozzle sets of flow that multiple nozzles are formed, each nozzle sets stream are disposed with cooling water pipeline
Amount distribution is consistent with the concentration distribution of nitrogen oxides in effluent using the change of caliber, can improve reducing agent and be imitated with the mixing of flue gas
Really, the escaping of ammonia is reduced.
Further, the cooled water dividing plate of cooling water pipeline is divided into upper and lower two-layer, and cooling water is passed through from lower floor, from upper stream
Go out, compared with traditional spray gun long, a cooling water pipeline is reduced, so as to reduce spray gun weight.
Brief description of the drawings
Fig. 1 is the Longitudinal cross section schematic of multitube path length spray gun described in present example.
Fig. 2 is the schematic cross-section in A-A directions in Fig. 1.
In figure：1 is urea liquid pipeline；2 is compressed air line；3 is cooling water inlet；4 is coolant outlet；5 are
Cooling water dividing plate；6 is first paragraph stainless steel tube；7 is second segment stainless steel tube；8 is the 3rd section of stainless steel tube；9 is first group of spray
Mouth；10 is second group of nozzle；11 is the 3rd group of nozzle；12 is adpting flange, and 13 is assembly flange.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
The present invention proposes a kind of multitube path length spray gun for thermal power plant's SNCR denitration system, its structure as shown in figure 1, spray
Rifle total length is 10-12 meters adjustable, can be inserted into burner hearth middle part.Comprising multiple nozzles on spray gun, to reducing agent is sprayed in flue gas, will
Nitrogen oxides in flue gas is reduced into nitrogen and water.The reducing agent is the urea liquid of mass concentration 5-10%, using compression
Air atomizing.Cooling agent used by spray gun is water.
Spray gun structure is compound steel sleeve pipe, and nested encryptions, innermost layer is urea liquid pipeline 1, and intermediate layer is compressed air
Pipeline 2, outermost layer is cooling water pipeline, and three cannula tips are sealed, and are not influenceed mutually between each pipeline.Steel pipe is preferably used
Stainless steel is made, and adpting flange 12 is used for the connection of innermost layer steel pipe and the sealing of intermediate layer steel pipe；After outermost layer steel pipe
End is fixed on the steel pipe of intermediate layer by assembly flange 13, and assembly flange 13 is used for the assembling of spray gun and executing agency.
Compressed air line 2 and cooling water pipeline are welded using the stainless steel tube of three sections of different walls, outside steel pipe
Footpath is consistent.The wall thickness of first paragraph stainless steel tube 6 is 11mm, and length is 5m；The wall thickness of second segment stainless steel tube 7 is 7mm, and length is
3.6m；The 3rd section of wall thickness of stainless steel tube 8 is 3.5mm, and length is that 1.4-3.4m is adjustable.
One group of nozzle is respectively mounted with three sections of steel pipes of different wall, for spraying urea liquid.Three groups of streams of nozzle
Amount distribution is consistent with the concentration distribution of nitrogen oxides in effluent, big in particular close to the 3rd group of anterior flow of nozzle 11 of spray gun,
And it is small near first group of flow of nozzle 9 of spray gun afterbody, second group of middle flow of nozzle 10 is therebetween.
As depicted in figs. 1 and 2, a cooling water dividing plate 5 is increased in cooling water pipeline, by being axially fixed to compression
Pipeline is divided into upper and lower two-way on air pipe line 2, cooling water is passed through from the cooling water inlet 3 of lower road pipeline, by upper road pipeline
Coolant outlet 4 is discharged, and reduces spray gun temperature.
Claims (7)
1. a kind of multitube path length spray gun for thermal power plant's SNCR denitration system, it is characterised in that including three it is coaxial it is nested even
The steel pipe for connecing, three front ends of steel pipe seal the gap set and between adjacent steel pipe and form accommodation space；Innermost layer steel pipe
Rear end be passed through urea liquid and form urea liquid pipeline (1), the rear end of intermediate layer steel pipe is passed through compressed air, and to form compression empty
Air pipe (2), the rear end of outermost layer steel pipe is passed through cooling water and forms cooling water pipeline；
Outermost layer steel pipe disposed outside has multiple nozzles, and urea liquid pipeline (1) sprays with multiple respectively with compressed air line (2)
Mouth is connected；
Intermediate layer steel pipe and outermost layer steel pipe are welded using the stainless steel tube of multistage different wall；Wall thickness from back to front by
Section reduces and keeps the external diameter of each section of tube wall constant.
2. a kind of multitube path length spray gun for thermal power plant's SNCR denitration system according to claim 1, it is characterised in that
Intermediate layer steel pipe and outermost layer steel pipe are welded using the stainless steel tube of three sections of different walls；From back to front, first paragraph is not
Rust steel pipe (6) wall thickness is 11mm, and length is 5m；Second segment stainless steel tube (7) wall thickness is 7mm, and length is 3.6m；3rd section stainless
Steel pipe (8) wall thickness is 3.5mm, and length is 1.4m-3.4m.
3. a kind of multitube path length spray gun for thermal power plant's SNCR denitration system according to claim 1, it is characterised in that
Multiple nozzles of outermost layer steel pipe disposed outside are grouped by correspondence on each section of stainless steel tube of different wall, and correspondence wall
The thick trend for reducing paragraph by paragraph from back to front, the flow of multigroup nozzle also reduces by group.
4. a kind of multitube path length spray gun for thermal power plant's SNCR denitration system according to claim 1, it is characterised in that
It is provided with cooling water pipeline and is axially fixed to the outside dividing plate (5) of compressed air line (2), cooling water pipeline is divided into only
Two pipeline up and down of front end connection, lower pipeline part sets cooling water inlet (3), and upper pipeline part sets coolant outlet (4).
5. a kind of multitube path length spray gun for thermal power plant's SNCR denitration system according to claim 1, it is characterised in that
Also include the adpting flange (12) of fixed innermost layer steel pipe, the rear end of innermost layer steel pipe is set through adpting flange (12).
6. a kind of multitube path length spray gun for thermal power plant's SNCR denitration system according to claim 5, it is characterised in that
The rear end of intermediate layer steel pipe is fixedly connected on flange (12).
7. a kind of multitube path length spray gun for thermal power plant's SNCR denitration system according to claim 1, it is characterised in that
The rear end of outermost layer steel pipe is fixed on the steel pipe of intermediate layer by assembly flange (13), and the entrance of compressed air line is arranged on company
Between acting flange (12) and assembly flange (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710171126.9A CN106823760A (en) | 2017-03-21 | 2017-03-21 | A kind of multitube path length spray gun for thermal power plant's SNCR denitration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710171126.9A CN106823760A (en) | 2017-03-21 | 2017-03-21 | A kind of multitube path length spray gun for thermal power plant's SNCR denitration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106823760A true CN106823760A (en) | 2017-06-13 |
Family
ID=59130100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710171126.9A Pending CN106823760A (en) | 2017-03-21 | 2017-03-21 | A kind of multitube path length spray gun for thermal power plant's SNCR denitration system |
Country Status (1)
| Country | Link |
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| CN (1) | CN106823760A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54149007A (en) * | 1978-05-15 | 1979-11-21 | Babcock Hitachi Kk | Reducing-agent injecting header |
| CN104056542A (en) * | 2014-06-09 | 2014-09-24 | 广西壮族自治区建筑材料科学研究设计院 | SNCR (selective non-catalytic reduction) denitration method and SNCR denitration device |
| CN204220334U (en) * | 2014-10-13 | 2015-03-25 | 北京洛卡环保技术有限公司 | A kind of denitrating flue gas directly sprays spraying urea liquid emitter |
| CN205627564U (en) * | 2016-05-30 | 2016-10-12 | 沈阳隆达环保节能集团有限公司 | High -efficient denitration spray gun |
| CN206676221U (en) * | 2017-03-21 | 2017-11-28 | 中国华能集团公司 | Multitube path length spray gun for thermal power plant's SNCR denitration system |
-
2017
- 2017-03-21 CN CN201710171126.9A patent/CN106823760A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54149007A (en) * | 1978-05-15 | 1979-11-21 | Babcock Hitachi Kk | Reducing-agent injecting header |
| CN104056542A (en) * | 2014-06-09 | 2014-09-24 | 广西壮族自治区建筑材料科学研究设计院 | SNCR (selective non-catalytic reduction) denitration method and SNCR denitration device |
| CN204220334U (en) * | 2014-10-13 | 2015-03-25 | 北京洛卡环保技术有限公司 | A kind of denitrating flue gas directly sprays spraying urea liquid emitter |
| CN205627564U (en) * | 2016-05-30 | 2016-10-12 | 沈阳隆达环保节能集团有限公司 | High -efficient denitration spray gun |
| CN206676221U (en) * | 2017-03-21 | 2017-11-28 | 中国华能集团公司 | Multitube path length spray gun for thermal power plant's SNCR denitration system |
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Application publication date: 20170613 |