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 PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
flue
gas
flue gas
scr denitration
underrun
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
Application number
CN201710168521.1A
Other languages
Chinese (zh)
Inventor
朱跃
张杨
冯前伟
裴煜坤
徐克涛
江建平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huadian Electric Power Research Institute Co Ltd
Original Assignee
Huadian Electric Power Research Institute Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huadian Electric Power Research Institute Co Ltd filed Critical Huadian Electric Power Research Institute Co Ltd
Priority to CN201710168521.1A priority Critical patent/CN106996572A/en
Publication of CN106996572A publication Critical patent/CN106996572A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/003Arrangements of devices for treating smoke or fumes for supplying chemicals to fumes, e.g. using injection devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/54Nitrogen compounds
    • B01D53/56Nitrogen oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8621Removing nitrogen compounds
    • B01D53/8625Nitrogen oxides
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/006Layout of treatment plant
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/02Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/06Arrangements of devices for treating smoke or fumes of coolers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING 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
    • F23L15/00Heating of air supplied for combustion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/40Nitrogen compounds
    • B01D2257/406Ammonia
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

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

Solve the flue gas recirculation structure and method of SCR denitration underrun dust stratification abrasion
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.
CN201710168521.1A 2017-03-21 2017-03-21 Solve the flue gas recirculation structure and method of SCR denitration underrun dust stratification abrasion Pending CN106996572A (en)

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

Publications (1)

Publication Number Publication Date
CN106996572A true CN106996572A (en) 2017-08-01

Family

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

Country Status (1)

Country Link
CN (1) CN106996572A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
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

Citations (6)

* Cited by examiner, † Cited by third party
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN106996572A (en) Solve the flue gas recirculation structure and method of SCR denitration underrun dust stratification abrasion
CN203501199U (en) NOx-controlled denitrification device of glass kiln
CN204543996U (en) Coal-fired plant flue gas multi-pollutant deep purifying controls coupled system
CN103406006A (en) SCR (Selective Catalytic Reduction) denitration device for NOx control of rotary cement kiln
CN204134478U (en) Switch protecting type boiler smoke SCR denitration system
CN108786459A (en) A kind of system and its operation method of the wide load denitration of air water cooperative achievement
CN203170210U (en) Special spray gun for SNCR (Selective Non-Catalytic Reduction) denitration process
CN208599489U (en) A kind of cement kiln flue gas SCR denitration system
CN204380514U (en) Coal-burning power plant's SCR denitration ammonia blowoff
CN208786167U (en) A kind of system of the wide load denitration of air water cooperative achievement
CN208839373U (en) A kind of ammonium hydroxide vaporising device for cement SCR denitration
CN106110872A (en) Combine SO in removing SCR denitration device inlet flue gas3and the device of flue dust
CN210473618U (en) Low temperature SCR denitrification facility in steel rolling heating furnace flue gas dry desulfurization
CN207455619U (en) Solve the flue gas recirculation structure of SCR denitration underrun dust stratification abrasion
CN211069654U (en) Two-stage ammonia injection combined denitration system
CN202860383U (en) SCR flue gas denitrating device for garbage incinerator
CN209612640U (en) A kind of denitrating system of multi-stage reacting device
CN205288047U (en) Device that flue gas was handled to non - catalytic selectivity reduction method (SNCR) is used to glass kiln
CN207805390U (en) A kind of station boiler denitrating system
CN208612146U (en) A kind of dedusting denitration device
CN107638803A (en) A kind of system and its operation method of twin furnace synthetic operation full load denitration
CN208406626U (en) A kind of denitration reactor inlet flue device
CN109603528A (en) A kind of denitrating system and its working method of multi-stage reacting device
CN102580442A (en) Selective non-catalytic reduction denitration system of circulating fluidized bed boiler
CN205517271U (en) Boiler flue gas SNCR and SCR unite deNOx systems

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination