CN107583444A - A kind of denitrating system and method that reduction inhibitor agent is carried using steam - Google Patents
A kind of denitrating system and method that reduction inhibitor agent is carried using steam Download PDFInfo
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- CN107583444A CN107583444A CN201710907877.2A CN201710907877A CN107583444A CN 107583444 A CN107583444 A CN 107583444A CN 201710907877 A CN201710907877 A CN 201710907877A CN 107583444 A CN107583444 A CN 107583444A
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- inhibitor agent
- reduction inhibitor
- steam
- reduction
- carried
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- 230000009467 reduction Effects 0.000 title claims abstract description 84
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 79
- 239000003112 inhibitor Substances 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000007921 spray Substances 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000006722 reduction reaction Methods 0.000 claims description 82
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 22
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 21
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 14
- 239000003546 flue gas Substances 0.000 claims description 14
- 229910021529 ammonia Inorganic materials 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- 239000004202 carbamide Substances 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 3
- 229910052783 alkali metal Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 2
- -1 alkali metal salt Chemical class 0.000 claims description 2
- 238000000889 atomisation Methods 0.000 claims description 2
- 210000000038 chest Anatomy 0.000 claims 1
- 239000000243 solution Substances 0.000 description 32
- 230000006872 improvement Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 238000010531 catalytic reduction reaction Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 3
- 206010021143 Hypoxia Diseases 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 208000018875 hypoxemia Diseases 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 210000004894 snout Anatomy 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Abstract
The invention discloses a kind of denitrating system that reduction inhibitor agent is carried using steam, including the burner hearth provided with main burner and fire air nozzle, the reduction inhibitor agent solution reservoir and liquid pump that are connected, it is characterised in that：Also include the reduction inhibitor agent solution control cabinet being connected with the liquid pump other end, several spray guns are provided with burner hearth, each spray gun includes the steam pipe on burner hearth, the shower nozzle in steam pipe, the spout for being coupled to steam pipe front end, reduction inhibitor agent solution control cabinet is connected by pipeline with several shower nozzles, and spout is in the burner hearth between main burner and fire air nozzle；The invention also discloses a kind of method of denitration that reduction inhibitor agent is carried using steam；The present invention can not only improve denitration efficiency, reduce NOx discharge, it is ensured that qualified discharge, and reduced investment, floor space is small, and operation is easy, and operating cost is low, improves the security and economy of boiler.
Description
Technical field
The present invention relates to a kind of denitrating system and method for coal-burning boiler, carries reduction in particular with steam and suppresses
The denitrating system and method for agent.
Background technology
Newest《Fossil-fuel power plant atmospheric pollutant emission standard》（GB13223-2011）Provide nitrogen oxides from coal-fired boiler
（NOx）Limited value of discharge standard is 100mg/m3.In order to reduce the concentration of emission of NOx in fire coal boiler fume, main technology has
Air classification low NOx combusting technology, non-selective catalytic reduction denitration technology（Selective Non-Catalytic
Reduction,SNCR）And selective catalytic reduction（Selective Catalytic Reduction,SCR）.
Combustion air is divided into main combustion wind and burnout degree two parts by air classification low NOx combusting technology；Main combustion wind and fuel
Formation temperature is relatively low after mixed combustion, oxygen amount is insufficient, the primary zone of fuel enrichment；Burnout degree is independently arranged by burner top
Nozzle is sent into burner hearth, forms burning-out zone；Then it is referred to as reducing zone between primary zone and burning-out zone.
SNCR denitration technology is by reducing agents such as ammoniacal liquor or urea, and temperature is 900~1100 DEG C after being injected to burnout degree
In flue gas, in the case where not needing catalyst, reducing agent rapid thermal decomposition generation NH3, NH3NO in flue gas is reduced into N2。
Under conditions of no catalyst, the reduction reaction is only in certain temperature range（900~1100 DEG C）And oxygen concentration（2~4%）
Lower progress, has selectivity.
SCR denitration technology is reducing agent（Predominantly NH3）Injection flue and flue gas mixing, reducing agent is under catalyst action
In lower temperature selection NOx reactions, N is reduced into2。
In actual motion, problems with still occurs after air classification is transformed, SNCR is transformed in existing boiler：Due to
The difference of burning coal and the change of boiler load, denitration efficiency changes very greatly, especially when using anthracite, NOx discharge
Still it is up to 600mg/Nm3（@6%O2）More than, denitration efficiency is relatively low；Flue-gas temperature at SNCR spray sites easily deviates temperature window,
Jet-stream wind rigidity deficiency, coverage rate is small, it is difficult to be well mixed with flue gas, causes denitration efficiency drastically to decline, and increases reducing agent
Usage amount, NOx discharge rise, amount of ammonia slip is exceeded.
In a word, these problems all have a strong impact on the denitration efficiency of coal-burning boiler, it is difficult to thoroughly solve the NOx of low-volatite coal
Ultra-clean emission problem.
The content of the invention
The purpose of the present invention is the above-mentioned deficiency for prior art, there is provided a kind of to carry reduction inhibitor agent using steam
Denitrating system and method, it can not only improve denitration efficiency, reduce NOx discharge, it is ensured that qualified discharge, and reduced investment, take up an area
Area is small, and operation is easy, and operating cost is low, improves the security and economy of boiler.
In order to achieve the above object, a kind of denitrating system using steam carrying reduction inhibitor agent of the invention, including set
The reduction inhibitor agent solution reservoir and liquid pump for have the burner hearth of main burner and fire air nozzle, being connected, it is characterised in that：Also include
The reduction inhibitor agent solution control cabinet being connected with the liquid pump other end, is provided with several spray guns on burner hearth, and each spray gun includes setting
In the steam pipe on burner hearth, the shower nozzle in steam pipe, the spout for being coupled to steam pipe front end, reduction inhibitor agent solution control cabinet
It is connected by pipeline with several shower nozzles, spout is in the burner hearth between main burner and fire air nozzle；
As a further improvement on the present invention, it is additionally provided with voltage-stablizer between liquid pump and reduction inhibitor agent solution control cabinet；It can improve
The stability of reduction inhibitor agent solution conveying；
As a further improvement on the present invention, the outlet of the voltage-stablizer also passes through return line and reduction inhibitor agent solution reservoir
It is connected, regulating valve is provided with return line；Once reduction inhibitor agent liquid inventory is too high, reflowable to reduction inhibitor agent solution
Storage tank, improve utilization ratio；
As a further improvement on the present invention, the outlet of the voltage-stablizer also passes through control valve and flowmeter and reduction inhibitor agent
Solution control cabinet is connected；Flow can accurately be controlled；
As a further improvement on the present invention, it is equipped with pipeline of each shower nozzle with reduction inhibitor agent solution control cabinet is connected
Shuttoff Valve and flowmeter；Optional shower nozzle is sprayed；
As a further improvement on the present invention, it is provided with electric heater in reduction inhibitor agent solution reservoir；Controllable reduction inhibitor agent
The temperature of solution.
As a further improvement on the present invention, the spout is in fan-shaped duck-beak type spout；The firm of injection can be improved
Property, the high-speed jet injection burner hearth of sector can be formed, area coverage is big, improves the uniformity mixed with flue gas；
As a further improvement on the present invention, wherein a face wall or wherein two sides of the notch setting of several spray guns in burner hearth
Wall or wherein three face walls or wherein on four sides wall or corner；Different spray regimes can be formed, meets the needs of operating mode；
The present invention using said system it is a kind of using steam carry reduction inhibitor agent method of denitration, it is characterised in that including with
Lower step：1）The reduction inhibitor agent solution in reduction inhibitor agent solution reservoir is pumped into reduction inhibitor agent solution by liquid pump to control
Case, reduction inhibitor agent solution enter back into each shower nozzle, ejection after being pressed in reduction inhibitor agent solution control cabinet；2）Now by each steaming
The rear end of steam pipe is passed through the steam that pressure is 1.0~5.0MPa, temperature is 350~650K, and steam mixes with reduction inhibitor agent, mist
Sprayed into after change by spout in the burner hearth between main burner and fire air nozzle；3）Reduction inhibitor agent mixes with the flue gas in burner hearth
Close, reduction reaction occurs with nitrogen oxides, remove nitrogen oxides；
Newest research shows, hypoxemia（<2%）And high temperature（>1100℃）In the case of spray the denitration efficiency of ammonia and be up to more than 85%, and
And denitration efficiency does not reduce with the rise of temperature, there is very wide range of reaction temperature under high temperature；The present invention using steam as
The reinforcing reducing zone that carrier is spurted into reduction inhibitor agent before burnout degree, the regional temperature is consistently higher than 1100 DEG C, and is in
Reducing atmosphere, CO concentration is high, and reduction inhibitor agent is well mixed with flue gas, solves other more difficult realities of method during high temperature reduction
The problems such as existing well mixed, while the steam injected is advantageous to the gasification of the groups such as CO, H, OH, ammonia is under CO catalytic action
Strengthen and generated the NO group such as reduction, H, OH and reacted with ammonia the NO generations after suppressing input burnout degree, improve stove internal combustion
The denitration efficiency of burning process, it is ensured that qualified discharge, and boiler improvement amount is small, does not change chamber structure and operating condition, does not increase
Flue gas resistance, without the annexes such as blower fan, scrap build reduced investment, floor space is small, and operation is easy, and operating cost is low, improves pot
The security and economy of stove；
Preferably, the reduction inhibitor agent is urea liquid, ammonia spirit and alkali metal to one kind as method of denitration of the present invention
The mixed solution of one or more of materials in salt additives solution；Preferable denitration effect can be achieved；
In summary, the present invention can not only improve denitration efficiency, reduce NOx discharge, it is ensured that qualified discharge, and reduced investment, account for
Ground area is small, and operation is easy, and operating cost is low, improves the security and economy of boiler.
Brief description of the drawings
Fig. 1 is the denitrating system structural representation of the present invention.
Fig. 2 is the first burnout degree and Burners Positions schematic three dimensional views of the present invention.
Fig. 3 is Fig. 2 front view.
Fig. 4 is second of the burnout degree and Burners Positions schematic three dimensional views of the present invention.
Fig. 5 is Fig. 4 front view.
Fig. 6 is the third burnout degree and Burners Positions schematic three dimensional views of the present invention.
Fig. 7 is Fig. 6 front view.
Fig. 8 is the 4th kind of burnout degree and Burners Positions schematic three dimensional views of the present invention.
Fig. 9 is Fig. 8 front view.
Figure 10 is the 5th kind of burnout degree and Burners Positions schematic three dimensional views of the present invention.
Figure 11 is Figure 10 front view.
Figure 12 is spray gun structure schematic diagram in denitrating system of the invention.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is further detailed explanation.
As shown in Fig. 1, Figure 12, the denitrating system that reduction inhibitor agent is carried using steam of the embodiment, including provided with master
Burner 2 and the burner hearth of fire air nozzle 31, the reduction inhibitor agent solution reservoir 4 being sequentially connected, liquid pump 5, voltage-stablizer 6, regulation
Valve 7, flowmeter 8 and reduction inhibitor agent solution control cabinet 9, reduction inhibitor agent solution reservoir 4 is interior to be provided with electric heater 10, also
The connecting line of former inhibitor solution storage tank 4 and liquid pump 5 is provided with temperatuer detector 11, and the outlet of voltage-stablizer 6 also passes through backflow
Pipeline 12 is connected with reduction inhibitor agent solution reservoir 4, and regulating valve 13 is provided with return line 12；It is provided with burner hearth 1 several
Spray gun 14, each spray gun 14 include the steam pipe 15 on burner hearth, the shower nozzle 16 in steam pipe 15, are coupled to steam pipe
The spout 17 of 15 front ends, reduction inhibitor agent solution control cabinet 9 are connected with several shower nozzles 16 by pipeline, are equipped with the pipeline
Shuttoff Valve 18 and flowmeter 19, spout 17 is in the burner hearth 1 between main burner 2 and fire air nozzle 3, the spout 17
It is in fan-shaped duck-beak type spout, spout angle of coverage is 30~150 degree；
Wherein the set-up mode of fire air nozzle 3 and spray gun 14 can be varied, and as shown in Figures 2 and 3, which uses single-stage
Fire air nozzle 3, all around, wall paper puts 1 layer of totally 16 spray gun 14, the distance of this layer of spray gun and fire air nozzle 3 for 0.1 ~
3.5m；As shown in Figure 4, Figure 5, which uses two-stage over-fire wind snout 3, and all around, wall paper puts 1 layer of totally 16 reduction suppression
Formulation soln spray gun 14；As shown in Figure 6, Figure 7, which uses single-stage fire air nozzle 3, and several spray guns are arranged in burner hearth corner
14 form circle of contact injection；
As shown in Figure 8, Figure 9, which uses single-stage fire air nozzle 3, and in burner hearth, all around wall paper puts the several shapes of spray gun 14
Sprayed into the wall list circle of contact；
As shown in Figure 10, Figure 11, which uses single-stage fire air nozzle 3, and putting several spray guns 14 in burner hearth or so wall paper forms
The double circle of contact injections of wall；The needs of different operating modes can be met；
Using a kind of method of denitration that reduction inhibitor agent is carried using steam of said system, comprise the following steps：1）Pass through liquid
Reduction inhibitor agent solution in reduction inhibitor agent solution reservoir 4 is pumped into reduction inhibitor agent solution control cabinet 9 by pump 5, and reduction suppresses
Agent solution enters back into each shower nozzle 16, sprayed after being pressed in reduction inhibitor agent solution control cabinet 9；The reduction inhibitor agent is urea
The mixed solution of one or more of materials in solution, ammonia spirit and alkali metal salt additive solution；2）Now by each steaming
The rear end of steam pipe 15 is passed through the steam that pressure is 1.0~5.0MPa, temperature is 350~650K, steam mixes with reduction inhibitor agent,
Sprayed into after atomization by spout 17 in the burner hearth 1 between main burner 2 and fire air nozzle 3；3）In reduction inhibitor agent and burner hearth 1
Flue gas mixing, reduction reaction, removing nitrogen oxides occur with nitrogen oxides；
According to recent studies have shown that for applicant, hypoxemia（<2%）And high temperature（>1100℃）In the case of spray ammonia denitration efficiency be up to
More than 85%, and denitration efficiency does not reduce with the rise of temperature, has very wide range of reaction temperature under high temperature；This hair
The bright reinforcing reducing zone spurted into reduction inhibitor agent using steam as carrier before burnout degree, steam pipe 15 can be with boiler superheater
It is connected Deng part, steam used can be drawn by parts such as boiler superheaters, have higher temperature, will be reduced and pressed down as medium
Formulation soln sprays into burner hearth reducing zone, this regional temperature is influenceed small so that the regional temperature is consistently higher than 1100 DEG C, beneficial to carrying
High denitration effect, and be in reducing atmosphere, CO concentration is high, and reduction inhibitor agent is well mixed with flue gas, solves high temperature reduction mistake
In journey the problems such as other methods relatively difficult to achieve well mixed, while the steam injected is advantageous to the gasification of the groups such as CO, H, OH,
Ammonia strengthen under CO catalytic action the groups such as the reduction for having generated NO, H, OH with ammonia react suppression input burnout degree after
NO is generated, and improves the denitration efficiency of stove combustion process, it is ensured that qualified discharge, and boiler improvement amount is small, does not change chamber structure
And operating condition, do not increase flue gas resistance, without the annexes such as blower fan, scrap build reduced investment, floor space is small, and operation is easy,
Operating cost is low, improves the security and economy of boiler；
Once reduction inhibitor agent liquid inventory is too high, reflowable to reduction inhibitor agent solution reservoir 4 by return line 12, improve
Utilization ratio；Voltage-stablizer 6 can improve the stability of reduction inhibitor agent solution conveying；
Duck-beak type spout 17 can improve the rigidity of injection, and burner hearth is injected in the high-speed jet that can form sector, and area coverage is big, is improved
The uniformity mixed with flue gas；
The invention is not restricted to above-mentioned embodiment, such as settable multilayer spray gun, its arrangement is also disposed at burner hearth four sides wall
On, to spray or left and right to spray before and after being formed in stove, or front-back staggered is formed to spraying or being dislocated to spray in stove.
Claims (10)
1. a kind of denitrating system that reduction inhibitor agent is carried using steam, including the stove provided with main burner and fire air nozzle
Thorax, connected reduction inhibitor agent solution reservoir and liquid pump, it is characterised in that：The reduction for also including being connected with the liquid pump other end suppresses
Agent solution control cabinet, several spray guns are provided with burner hearth, each spray gun is including the steam pipe on burner hearth, located at steam pipe
Interior shower nozzle, the spout for being coupled to steam pipe front end, reduction inhibitor agent solution control cabinet are connected by pipeline with several shower nozzles, spout
In burner hearth between main burner and fire air nozzle.
A kind of 2. denitrating system that reduction inhibitor agent is carried using steam according to claim 1, it is characterised in that：Liquid pump
Voltage-stablizer is additionally provided between reduction inhibitor agent solution control cabinet.
A kind of 3. denitrating system that reduction inhibitor agent is carried using steam according to claim 2, it is characterised in that：It is described
The outlet of voltage-stablizer is also connected by return line with reduction inhibitor agent solution reservoir, and regulating valve is provided with return line.
A kind of 4. denitrating system that reduction inhibitor agent is carried using steam according to Claims 2 or 3, it is characterised in that：
The outlet of the voltage-stablizer is also connected by control valve and flowmeter with reduction inhibitor agent solution control cabinet.
A kind of 5. denitrating system that reduction inhibitor agent is carried using steam according to claim 4, it is characterised in that：Even
Each shower nozzle is connect with being equipped with Shuttoff Valve and flowmeter on the pipeline of reduction inhibitor agent solution control cabinet.
A kind of 6. denitrating system that reduction inhibitor agent is carried using steam according to claim 1 or 5, it is characterised in that：
Electric heater is provided with reduction inhibitor agent solution reservoir.
A kind of 7. denitrating system that reduction inhibitor agent is carried using steam according to claim 1 or 5, it is characterised in that：
The spout is in fan-shaped duck-beak type spout.
A kind of 8. denitrating system that reduction inhibitor agent is carried using steam according to claim 1 or 5, it is characterised in that：
A wherein face wall or wherein two face walls or wherein three face walls or wherein four sides wall of the notch setting of several spray guns in burner hearth
Or on corner.
9. using a kind of method of denitration that reduction inhibitor agent is carried using steam of system as claimed in claim 1, its feature exists
In comprising the following steps：1）Reduction inhibitor agent solution in reduction inhibitor agent solution reservoir is pumped into by reduction inhibitor agent by liquid pump
Solution control cabinet, reduction inhibitor agent solution enter back into each shower nozzle, ejection after being pressed in reduction inhibitor agent solution control cabinet；2）Together
When the steam that pressure is 1.0~5.0MPa, temperature is 350~650K is passed through by the rear end of each steam pipe, steam suppresses with reduction
Sprayed into after agent mixing, atomization by spout in the burner hearth between main burner and fire air nozzle；3）In reduction inhibitor agent and burner hearth
Flue gas mixing, with nitrogen oxides occur reduction reaction, remove nitrogen oxides.
A kind of 10. method of denitration that reduction inhibitor agent is carried using steam according to claim 8, it is characterised in that：Institute
State mixing of the reduction inhibitor agent for one or more of materials in urea liquid, ammonia spirit and alkali metal salt additive solution
Solution.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710907877.2A CN107583444A (en) | 2017-09-29 | 2017-09-29 | A kind of denitrating system and method that reduction inhibitor agent is carried using steam |
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| CN201710907877.2A CN107583444A (en) | 2017-09-29 | 2017-09-29 | A kind of denitrating system and method that reduction inhibitor agent is carried using steam |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110115931A (en) * | 2019-05-27 | 2019-08-13 | 启明星宇节能科技股份有限公司 | It is a kind of to abolish the outer denitrating system of furnace and method that chemical bond fetters |
| 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 |
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| CN110115931A (en) * | 2019-05-27 | 2019-08-13 | 启明星宇节能科技股份有限公司 | It is a kind of to abolish the outer denitrating system of furnace and method that chemical bond fetters |
| CN110115931B (en) * | 2019-05-27 | 2024-08-09 | 启明星宇节能科技股份有限公司 | Off-furnace denitration system and method for breaking chemical bond constraint |
| 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 |
| CN111450703B (en) * | 2020-05-09 | 2024-05-07 | 中国华能集团有限公司 | High-temperature ammonia spraying and denitration device for coal-fired boiler |
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Application publication date: 20180116 |