CN106996572A - Solve the flue gas recirculation structure and method of SCR denitration underrun dust stratification abrasion - Google Patents
Solve the flue gas recirculation structure and method of SCR denitration underrun dust stratification abrasion Download PDFInfo
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- CN106996572A CN106996572A CN201710168521.1A CN201710168521A CN106996572A CN 106996572 A CN106996572 A CN 106996572A CN 201710168521 A CN201710168521 A CN 201710168521A CN 106996572 A CN106996572 A CN 106996572A
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- flue
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- flue gas
- scr denitration
- underrun
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 239000003546 flue gas Substances 0.000 title claims abstract description 54
- 239000000428 dust Substances 0.000 title claims abstract description 32
- 238000013517 stratification Methods 0.000 title claims abstract description 23
- 238000005299 abrasion Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000007789 gas Substances 0.000 claims abstract description 54
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims abstract description 12
- 239000000779 smoke Substances 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000004071 soot Substances 0.000 claims description 5
- 230000018199 S phase Effects 0.000 claims 1
- 235000019504 cigarettes Nutrition 0.000 claims 1
- 238000004064 recycling Methods 0.000 claims 1
- 230000007774 longterm Effects 0.000 abstract description 4
- 239000003054 catalyst Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/003—Arrangements of devices for treating smoke or fumes for supplying chemicals to fumes, e.g. using injection devices
-
- 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
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/006—Layout of treatment plant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/406—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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Biomedical Technology (AREA)
- Combustion & Propulsion (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Chimneys And Flues (AREA)
Abstract
The present invention provides a kind of flue gas recirculation structure and method for solving the abrasion of SCR denitration underrun dust stratification, the problem of dust stratification under current SCR denitration device underrun normality is solved well, is worn and torn.Bypass flue one end is connected with gas approach, and the other end is connected with exhaust pass, and the position that bypass flue one end is connected with gas approach is in front of spray ammonia mixing arrangement；By-pass damper and air-introduced machine are arranged in bypass flue.Flue gas is exchanged heat into economizer, then enters SCR denitration reactor after gas approach and spray ammonia mixing arrangement, the flue gas after denitration is then exhausted from after exhaust pass is exchanged heat into air preheater；When the long-term underrun of unit, by-pass damper is opened, air-introduced machine is opened, a part of exiting flue gas in exhaust pass is recycled into gas approach to be mixed with flue gas therein, flue gas passes through SCR denitration reactor denitration after mixing, and qualified discharge, a part will be carried out new circulation by a part.
Description
Technical field
The present invention relates to a kind of flue gas recirculation structure and method for solving the abrasion of SCR denitration underrun dust stratification.
Background technology
Energy resource structure of the China based on coal will not change within the long duration, therefore, control coal-fired flue-gas NOx emission
It is an important process of China's control atmosphere pollution.With NH3For the NOx selective catalytic reduction of reducing agent（SCR）Technology is
Most widely used in recent years, maximally effective coal-fired flue gas denitration technology.On the other hand, flue gas during SCR denitration device design and construction
Although flow velocity must take into account high underload simultaneously, the performance that must be preferentially met in Practical Project under high-load condition will
Ask, therefore the reaction condition under higher load condition is more abundant, but current Thermal generation unit generally faces long-term underload
Operation situation, and it is expected that will be difficult to change within following a period of time, on this condition, SCR denitration device low flue gas for a long time
Flue gas flow rate is slower in load operation, reactor, easily causes dust stratification, blocking, in turn results in catalyst abrasion, reaction efficiency drop
Low the problem of, also shows increasingly.Therefore, how effectively to solve the dust stratification wear problem under SCR denitration underrun, as work as
The important topic in preceding coal-fired flue gas denitration field.
The patent related to problem above, such as B of CN 101791518 ---《Be conducive to blowing deposited dust denitrating system and
Denitrating system catalyst arrangement method》, it is by making to keep one between the periphery of catalyst combination module and the wall of reactor
Fixed gap and soot blower are equipped with, it is ensured that ash content is most of from the discharge of reactor wall surrounding, so that ash is alleviated or avoided
Divide and block.The method is to belong to reinforcement flying dust is through-flow and soot blowing avoids catalyst dust stratification, but fails to solve other positions of reactor
The problem of putting dust stratification, and increasing flue gas flow area can cause smoke corridor, reduce the denitration efficiency of denitrification apparatus.
And for example U of CN 202792064 ---《The SCRSCR Benitration reactor flue systems of accumulatingdust》, it is by input
Dust collection chamber is set on flue and output flue is connected to, so as to reduce into the flying dust amount for entering SCR reactors, mitigates dust
Abrasion and Poisoning Effect to catalyst.The method belongs to collects a part of flying dust in advance, it is to avoid it is anti-that it enters SCRSCR denitrations
Answer in device, but the method is relatively applied to intercept bulky grain flying dust, for little particle flying dust DeGrain, and should in Practical Project
In, the stronger little particle flying dust of viscosity tends to cause serious dust stratification in reactor, therefore under low load condition
Dust stratification still suffers from certain limitation in SCR reactors.
The content of the invention
It is an object of the invention to overcome above shortcomings in the prior art, and provide a kind of reasonable in design
The flue gas recirculation structure and method of SCR denitration underrun dust stratification abrasion are solved, current SCR denitration dress is solved well
The problem of setting low the dust stratification under load operation normality, wear and tear.
The present invention the used technical scheme that solves the above problems is：One kind solves SCR denitration underrun dust stratification mill
The flue gas recirculation structure of damage, including boiler, economizer, gas approach, SCR denitration reactor, exhaust pass, air preheater and spray
Ammonia mixing arrangement；The exhanst gas outlet of boiler is connected with the smoke inlet of economizer；The exhanst gas outlet of economizer and gas approach
Smoke inlet is connected；The exhanst gas outlet of gas approach is connected with the smoke inlet of SCR denitration reactor；SCR denitration reactor
Exhanst gas outlet is connected with the smoke inlet of exhaust pass；The exhanst gas outlet of exhaust pass is connected with the smoke inlet of air preheater；Spray
Ammonia mixing arrangement is arranged in gas approach；It is characterized in that：Also include by-pass damper, air-introduced machine and bypass flue；In entrance
Bypass flue is set, and bypass flue one end is connected with gas approach, the other end connects with exhaust pass between flue and exhaust pass
It is logical, and the position that bypass flue one end is connected with gas approach is located at spray ammonia mixing arrangement front；By-pass damper and air-introduced machine peace
In bypass flue.
One end that by-pass damper of the present invention is connected close to bypass flue with gas approach.
The present invention is provided with soot blower in by-pass damper position.
A kind of claim solves the flue gas recirculation of the flue gas recirculation structure of SCR denitration underrun dust stratification abrasion
Method, it is characterised in that：Flue gas initially enters economizer and exchanged heat after boiler comes out, then by gas approach and
Spray and enter SCR denitration reactor progress denitration reaction after ammonia mixing arrangement, the flue gas after denitration enters empty pre- by exhaust pass
Device is then exhausted from flowing to tail flue gas purifier, final qualified discharge after being exchanged heat；When the long-term underrun of unit, beat
By-pass damper is opened, air-introduced machine is opened, a part of exiting flue gas in exhaust pass is recycled in gas approach and gas approach
Flue gas is mixed, so as to increase the exhaust gas volumn into SCR denitration reactor, mixed flue gas passes through SCR denitration reactor
Carry out after denitration reaction, qualified discharge, a part will be carried out new circulation by a part.
Flue gas flow rate control is in 4m/s~6m/s in SCR denitration reactor of the present invention.
The present invention compared with prior art, with advantages below and effect：Present system flow is simple, stable,
It is workable, applicability is respectively provided with to newly-built denitrification apparatus or the transformation of active service denitrification apparatus, therefore with good environmental protection, warp
Ji benefit is with being widely applied prospect.
Brief description of the drawings
Fig. 1 is the structural representation of flue gas recirculation structure of the present invention.
Embodiment
Below in conjunction with the accompanying drawings and the present invention is described in further detail by embodiment.
Referring to Fig. 1, the present invention solve the abrasion of SCR denitration underrun dust stratification flue gas recirculation structure include boiler 1,
Economizer 2, by-pass damper 3, air-introduced machine 4, bypass flue 5, gas approach 6, SCR denitration reactor 7, exhaust pass 8, air preheater
9 and spray ammonia mixing arrangement 10.
The exhanst gas outlet of boiler 1 is connected with the smoke inlet of economizer 2.The exhanst gas outlet of economizer 2 and gas approach 6
Smoke inlet is connected.The exhanst gas outlet of gas approach 6 is connected with the smoke inlet of SCR denitration reactor 7.SCR denitration reactor 7
Exhanst gas outlet connected with the smoke inlet of exhaust pass 8.The exhanst gas outlet of exhaust pass 8 connects with the smoke inlet of air preheater 9
It is logical.Ammonia mixing arrangement 10 is sprayed to be arranged in gas approach 6.
Bypass flue 5 is provided between gas approach 6 and exhaust pass 8, the one end of bypass flue 5 connects with gas approach 6
Logical, the other end is connected with exhaust pass 8.
The position that the one end of bypass flue 5 is connected with gas approach 6 is needed in the front of spray ammonia mixing arrangement 10 in Practical Project
Particular location and hybrid mode are designed by flow field simulation result, to ensure that the flue gas homogeneity condition for reaching catalyst inlet is expired
Sufficient performance indications requirement.
Air-introduced machine 4 is arranged in bypass flue 5, and flue gas is extracted after partial denitrification to gas approach 6, bypass flue to realize
5 flows need to be adjusted according to concrete engineering technical parameter with requiring, mixed exhaust gas volumn must realize SCR denitration reactor 7
Interior flue gas flow rate control is in 4m/s~6m/s.
By-pass damper 3 is arranged in bypass flue 5, to control bypass to run.By-pass damper 3 is close proximity to bypass flue 5
The one end connected with gas approach 6 can set soot blower in the position of by-pass damper 3 if necessary to avoid dust stratification.
A kind of right solves the flue gas recirculation side of the flue gas recirculation structure of SCR denitration underrun dust stratification abrasion
Method：
Flue gas initially enters economizer 2 and exchanged heat after boiler 1 comes out, then by gas approach 6 and spray ammonia mixing dress
Enter SCR denitration reactor 7 after putting 10 and carry out SCR denitration reaction, the flue gas after denitration enters air preheater 9 by exhaust pass 8
It is then exhausted from flowing to tail flue gas purifier, final qualified discharge after being exchanged heat.When the long-term underrun of unit, open
By-pass damper 3, opens air-introduced machine 4, a part of exiting flue gas in exhaust pass 8 is recycled into gas approach 6 and flue gas therein
Mixed, so as to increase the exhaust gas volumn into SCR denitration reactor 7, mixed flue gas enters by SCR denitration reactor 7
After row denitration reaction, qualified discharge, a part will be carried out new circulation by a part.
Above content described in this specification is only to structure example explanation of the present invention；Moreover, this hair
The title that bright each several part is taken can also be different, what all construction, feature and principles according to described in inventional idea of the present invention were done etc.
In effect or simple change, the protection domain for being included in patent of the present invention.
Claims (5)
1. a kind of flue gas recirculation structure for solving the abrasion of SCR denitration underrun dust stratification, including boiler, economizer, entrance
Flue, SCR denitration reactor, exhaust pass, air preheater and spray ammonia mixing arrangement；The exhanst gas outlet of boiler and the flue gas of economizer
Entrance is connected；The exhanst gas outlet of economizer is connected with the smoke inlet of gas approach；The exhanst gas outlet and SCR denitration of gas approach
The smoke inlet connection of reactor；The exhanst gas outlet of SCR denitration reactor is connected with the smoke inlet of exhaust pass；Exhaust pass
Exhanst gas outlet connected with the smoke inlet of air preheater；Ammonia mixing arrangement is sprayed to be arranged in gas approach；It is characterized in that：Also wrap
Include by-pass damper, air-introduced machine and bypass flue；Bypass flue, bypass flue one end are set between gas approach and exhaust pass
Connected with gas approach, the other end is connected with exhaust pass, and the position that bypass flue one end is connected with gas approach is located at spray
In front of ammonia mixing arrangement；By-pass damper and air-introduced machine are arranged in bypass flue.
2. the flue gas recirculation structure according to claim 1 for solving the abrasion of SCR denitration underrun dust stratification, its feature
It is：One end that described by-pass damper is connected close to bypass flue with gas approach.
3. the flue gas recirculation structure according to claim 1 for solving the abrasion of SCR denitration underrun dust stratification, its feature
It is：By-pass damper position is provided with soot blower.
4. a kind of flue gas of the solution SCR denitration underrun dust stratification abrasion described in claim 1-3 any claims is again
The flue gas recirculation method of loop structure, it is characterised in that：Flue gas initially enters economizer and exchanged heat after boiler comes out,
Then enter SCR denitration reactor after gas approach and spray ammonia mixing arrangement and carry out denitration reaction, the flue gas after denitration
It is then exhausted from flowing to tail flue gas purifier, final qualified discharge after exhaust pass is exchanged heat into air preheater；Work as machine
During group leader's phase underrun, open by-pass damper, open air-introduced machine, by a part of exiting flue gas in exhaust pass be recycled into
Mouth flue is mixed with the flue gas in gas approach, so as to increase the exhaust gas volumn into SCR denitration reactor, mixed cigarette
Gas is after SCR denitration reactor carries out denitration reaction, and qualified discharge, a part will be carried out new circulation by a part.
5. the flue gas of the flue gas recirculation structure according to claim 4 for solving the abrasion of SCR denitration underrun dust stratification
Method for recycling, it is characterised in that：Flue gas flow rate control is in 4m/s~6m/s in SCR denitration reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710168521.1A CN106996572A (en) | 2017-03-21 | 2017-03-21 | Solve the flue gas recirculation structure and method of SCR denitration underrun dust stratification abrasion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710168521.1A CN106996572A (en) | 2017-03-21 | 2017-03-21 | Solve the flue gas recirculation structure and method of SCR denitration underrun dust stratification abrasion |
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| Publication Number | Publication Date |
|---|---|
| CN106996572A true CN106996572A (en) | 2017-08-01 |
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ID=59431698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710168521.1A Pending CN106996572A (en) | 2017-03-21 | 2017-03-21 | Solve the flue gas recirculation structure and method of SCR denitration underrun dust stratification abrasion |
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| CN (1) | CN106996572A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107596883A (en) * | 2017-09-22 | 2018-01-19 | 华电电力科学研究院 | A kind of desulfurization wastewater Zero discharging system and its method of work |
| CN107694305A (en) * | 2017-09-19 | 2018-02-16 | 华电电力科学研究院 | A kind of SCR denitration system and its method of work of two-stage reactor series connection |
| CN107829804A (en) * | 2017-11-24 | 2018-03-23 | 江苏科技大学 | A kind of circulation of tail gas processing system of the ship denitrating system based on SCR |
| CN109589789A (en) * | 2018-12-19 | 2019-04-09 | 华电电力科学研究院有限公司 | A kind of SCR denitration system and its working method of two-stage reactor parallel running |
| CN110523266A (en) * | 2019-07-11 | 2019-12-03 | 西安交通大学 | A kind of novel utility boiler SCR denitration system and its working method |
| CN110566942A (en) * | 2019-09-10 | 2019-12-13 | 北京首钢股份有限公司 | Low-nitrogen combustion method for gas-fired boiler |
| CN112696663A (en) * | 2020-12-29 | 2021-04-23 | 四川省洪雅青衣江元明粉有限公司 | Method for controlling low-nitrogen combustion of boiler |
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|---|---|---|---|---|
| JPH0226620A (en) * | 1988-07-14 | 1990-01-29 | Mitsubishi Heavy Ind Ltd | Dust removing device of denitrification apparatus |
| JPH07112120A (en) * | 1993-10-18 | 1995-05-02 | Babcock Hitachi Kk | Denitrification device |
| JP2007061667A (en) * | 2005-08-29 | 2007-03-15 | Hitachi Zosen Corp | Flow velocity control device in high-dust denitration reactor |
| CN103104927A (en) * | 2011-11-10 | 2013-05-15 | 中国石油化工股份有限公司 | Smoke denitration method of carbon monoxide (CO) heat recovery boiler of fluid catalytic cracking (FCC) device |
| CN103463976A (en) * | 2013-05-16 | 2013-12-25 | 上海宝钢节能技术有限公司 | Sintering and pelletizing flue gas SCR denitration and dioxin removal apparatus |
| CN204629541U (en) * | 2015-05-14 | 2015-09-09 | 国家电网公司 | The dust arrester of a kind of coal-burning power plant SCR denitration system inlet flue gas |
-
2017
- 2017-03-21 CN CN201710168521.1A patent/CN106996572A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0226620A (en) * | 1988-07-14 | 1990-01-29 | Mitsubishi Heavy Ind Ltd | Dust removing device of denitrification apparatus |
| JPH07112120A (en) * | 1993-10-18 | 1995-05-02 | Babcock Hitachi Kk | Denitrification device |
| JP2007061667A (en) * | 2005-08-29 | 2007-03-15 | Hitachi Zosen Corp | Flow velocity control device in high-dust denitration reactor |
| CN103104927A (en) * | 2011-11-10 | 2013-05-15 | 中国石油化工股份有限公司 | Smoke denitration method of carbon monoxide (CO) heat recovery boiler of fluid catalytic cracking (FCC) device |
| CN103463976A (en) * | 2013-05-16 | 2013-12-25 | 上海宝钢节能技术有限公司 | Sintering and pelletizing flue gas SCR denitration and dioxin removal apparatus |
| CN204629541U (en) * | 2015-05-14 | 2015-09-09 | 国家电网公司 | The dust arrester of a kind of coal-burning power plant SCR denitration system inlet flue gas |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107694305A (en) * | 2017-09-19 | 2018-02-16 | 华电电力科学研究院 | A kind of SCR denitration system and its method of work of two-stage reactor series connection |
| CN107596883A (en) * | 2017-09-22 | 2018-01-19 | 华电电力科学研究院 | A kind of desulfurization wastewater Zero discharging system and its method of work |
| CN107829804A (en) * | 2017-11-24 | 2018-03-23 | 江苏科技大学 | A kind of circulation of tail gas processing system of the ship denitrating system based on SCR |
| CN107829804B (en) * | 2017-11-24 | 2024-03-01 | 江苏科技大学 | Tail gas circulation treatment system of ship denitration system based on SCR |
| CN109589789A (en) * | 2018-12-19 | 2019-04-09 | 华电电力科学研究院有限公司 | A kind of SCR denitration system and its working method of two-stage reactor parallel running |
| CN110523266A (en) * | 2019-07-11 | 2019-12-03 | 西安交通大学 | A kind of novel utility boiler SCR denitration system and its working method |
| CN110566942A (en) * | 2019-09-10 | 2019-12-13 | 北京首钢股份有限公司 | Low-nitrogen combustion method for gas-fired boiler |
| CN112696663A (en) * | 2020-12-29 | 2021-04-23 | 四川省洪雅青衣江元明粉有限公司 | Method for controlling low-nitrogen combustion of boiler |
| CN112696663B (en) * | 2020-12-29 | 2023-06-02 | 四川省洪雅青衣江元明粉有限公司 | Method for controlling low-nitrogen combustion of boiler |
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Application publication date: 20170801 |