CN106765239A - A kind of boiler back end ductwork with built-in denitration gas bypass - Google Patents
A kind of boiler back end ductwork with built-in denitration gas bypass Download PDFInfo
- Publication number
- CN106765239A CN106765239A CN201710008639.8A CN201710008639A CN106765239A CN 106765239 A CN106765239 A CN 106765239A CN 201710008639 A CN201710008639 A CN 201710008639A CN 106765239 A CN106765239 A CN 106765239A
- Authority
- CN
- China
- Prior art keywords
- flue
- back end
- end ductwork
- boiler back
- boiler
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J11/00—Devices for conducting smoke or fumes, e.g. flues
-
- 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
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
- F23J2900/11001—Conducting systems with a gas flow bypass from main flue to an auxiliary flue
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention discloses a kind of boiler back end ductwork with built-in denitration gas bypass, belong to Denitration in Boiler field, some heating surfaces are disposed with boiler back end ductwork, there also is provided at least that width is the gas bypass flue of boiler back end ductwork full duration or partial width all the way in boiler back end ductwork, each gas bypass flue is arranged in parallel with one or more levels heating surface, and gas bypass flue outlet is incorporated in boiler back end ductwork outlet.The present invention uses the built-in denitration bypass flue integrated with boiler back end ductwork, and cost of investment is saved, and reduces boiler floor space, and denitration entrance flue gas temperature is evenly.
Description
Technical field
The invention belongs to Denitration in Boiler field, more particularly to boiler SCR denitration system back-end ductwork.
Background technology
Large-sized station boiler often participates in peak regulation, and in underrun, SCR denitration device entrance flue gas temperature can be less than
At full capacity.When cigarette temperature is too low can not meet denitration put into operation condition when, can by set gas bypass flue reduce boiler tail
The heat exchange amount of flue internal heating surface and flue gas, improves denitration entrance flue gas temperature, meets denitration and puts into operation condition.
Existing gas bypass flue scheme uses external, as shown in Figure 1：It is disposed with the back-end ductwork of boiler
Heating surface, denitrification apparatus are arranged in after boiler back end ductwork, the catalyst needed for denitration is disposed with denitrification apparatus.In boiler
Denitration gas approach is there also is provided between back-end ductwork and denitrification apparatus, wherein there is ammonia-gas spraying device.To reduce flue-gas temperature and stream
The deviation of speed, generally deflector is arranged in denitration gas approach.Gas bypass flue from economizer or low temperature superheater it
Preceding extraction, before accessing ammonia-gas spraying device.Controllable register is additionally provided with gas bypass flue, baffle plate is when needing to improve cigarette temperature
Bypass flue gas flow is opened and can adjust, the flue gas before ammonia-gas spraying device is reached the temperature of needs.
As regenerative resource installation is continuously increased, the peak regulation depth to fired power generating unit proposes requirement higher, newly-built
Unit sets gas bypass and is almost inevitable choice.There is problem in existing external denitration gas bypass：
1) limited by external structure, circulation area is smaller in itself for bypass, while being limited to the perforate of bag wall and bypass cigarette
Road will pass through boiler steel structure guide layer Vierendeel girder and truss, it is impossible to be designed to too wide, it is therefore desirable to certain depth, thus,
For new-built unit, this bypass flue depth may influence boiler post away from, cause boiler floor space increase.
2) the positional distance ammonia-gas spraying device and catalyst of the flue gas introducing flue collector of denitration bypass flue are nearer, due to bypass
Flue is not full duration, it is impossible to ensure well mixed along whole boiler width flue gas, it is possible to cause catalyst inlet cigarette temperature
It is uneven.The ammonium hydrogen sulfate deposition for local low cigarette temperature area occur, influence boiler safety, economical operation are possible in operation.
The content of the invention
It is an object of the invention to：Propose a kind of boiler back end ductwork with built-in denitration gas bypass, using with boiler
The built-in denitration bypass flue of back-end ductwork integration, cost of investment is saved, and reduces boiler floor space, denitration inlet flue gas
More uniform temperature.
The object of the invention is realized by following technical proposals：
A kind of boiler back end ductwork with built-in denitration gas bypass, is disposed with some heating surfaces in boiler back end ductwork,
There also is provided at least that width is the gas bypass cigarette of boiler back end ductwork full duration or partial width all the way in boiler back end ductwork
Road, each gas bypass flue is arranged in parallel with one or more levels heating surface, and regulation gear is provided with gas bypass flue entrance
Plate, gas bypass flue outlet is incorporated in boiler back end ductwork outlet, and in the boiler in gas bypass flue outlet position downstream
Guiding device is provided with back-end ductwork, guiding device is located at boiler back end ductwork and is close on the wall of denitration gas approach side and court
Boiler back end ductwork internal projection.
In this patent, jump out the inevitable thinking limitation outside flue collector of prior art bypass flue, using with boiler tail
(denitration bypass flue is the boiler back end ductwork of prior art to the built-in denitration bypass flue of flue integration, is not changed
The boiler back end ductwork of prior art is in itself), it is to avoid prior art is using external (or merging parallel) bypass flue
A series of limitations and problem, cost of investment are saved, and reduce boiler floor space；Meanwhile, bypass flue and boiler back end ductwork one
Body, gas bypass flue outlet is incorporated in boiler back end ductwork outlet, and bypass flue has low depth width high or even overall with
The characteristics of spending, and bypass flue gas with main kiln gas mixing point and denitrfying agent injection apparatus long range, flue gas mixes evenly, and
The guiding device of specific setting further enhances this uniformity.
Alternatively, boiler back end ductwork is made up of the cooled enclosure wall superheater on top and the adiabatic flue of bottom, absolutely
Heating flue separates into two parallel flues by partition wall, and some heating surfaces, two parallel cigarettes are respectively disposed with two parallel flues
There is gas proportioning damper road end；Gas bypass flue is arranged in boiler back end ductwork near the one of denitration gas approach all the way
Side, and be arranged in parallel with one or more levels heating surface, gas bypass flue width is boiler back end ductwork full duration.The program
In, boiler back end ductwork is designed for twin flue, the design of gas bypass flue single flue full duration.
Alternatively, boiler back end ductwork is made up of the cooled enclosure wall superheater on top and the adiabatic flue of bottom, absolutely
Heating flue separates into two parallel flues by partition wall, and some heating surfaces, two parallel cigarettes are respectively disposed with two parallel flues
There is gas proportioning damper road end；Two-way gas bypass flue be placed in boiler back end ductwork near and away from denitration gas approach
Opposite sides, and be arranged in parallel with portions under heat face, gas bypass flue width is boiler back end ductwork full duration.The program
In, boiler back end ductwork is designed for twin flue, the design of gas bypass flue twin flue full duration.
Alternatively, gas bypass flue is made up of several point of flue arranged for interval.In the program, each gas bypass cigarette
Road can also further divide Flue duct design, and design is more flexible.That is, this patent both can occupy pot with a gas bypass flue
Stove back-end ductwork full duration or partial width, it is also possible to which several point of flue arranged for interval constitutes a gas bypass flue, should
Gas bypass flue occupies boiler back end ductwork full duration or partial width.
Alternatively, heating surface includes low temperature superheater, low-temperature reheater and economizer.
Foregoing main scheme of the invention and its each further selection scheme can be this with independent assortment to form multiple schemes
Invention can be used and claimed scheme；And the present invention, between (each non conflicting selection) selection and and other selections between
Can also independent assortment.Those skilled in the art can understand have after the present invention program is understood according to prior art and common knowledge
Multiple combination, is claimed technical scheme of the invention, and exhaustion is not done herein.
Beneficial effects of the present invention：
1) built-in gas bypass is full stove arrangement wide, and depth is small, and bypass flue outlet is communicated with flue collector, therefore
Its pressure is identical with boiler flue collector pressure, gas bypass space is directly reserved in conventional boiler flue, it is not necessary to increase
Plus the part such as extra buckstay.Cost of investment is saved.
2) its arrangement is not necessarily limited by beam and truss in boiler steel structure guide layer framework.For new-built unit, can be with
Compression boiler back end ductwork and the distance of denitrification apparatus, reduce boiler floor space.
3) apart from far, bypass exhanst gas outlet is simultaneously become owner of for the mixing point of built-in bypass flue and flue collector and ammonia-gas spraying device
Flue and bypass flue gas be the distribution wide of full stove, denitration entrance flue gas temperature is evenly.
Brief description of the drawings
Fig. 1 is the structural representation of prior art；
Fig. 2 is the structural representation of the embodiment of the present invention 1；
Fig. 3 is the structural representation of the embodiment of the present invention 2；
In figure, boiler 1, boiler back end ductwork 2, cooled enclosure wall superheater 3, adiabatic flue 4, low temperature superheater 5, low temperature
Reheater 6, economizer 7, partition wall 8, gas proportioning damper 9, denitrification apparatus 20, catalyst 21, denitration gas approach 22, spray ammonia dress
Put 23, deflector 24, gas bypass flue 30, controllable register 31.
Specific embodiment
Following non-limiting examples are used to illustrate the present invention.
Embodiment 1：
It is usual by the cooled enclosure wall superheater 3 on top and bottom in the boiler back end ductwork 2 of boiler 1 with reference to shown in Fig. 2
Adiabatic flue 4 constitute, the heating surfaces, two such as low temperature superheater 5, low-temperature reheater 6, economizer 7 are disposed with adiabatic flue 4
Individual parallel flue is separated by partition wall 8, and there is gas proportioning damper 9 two parallel flue ends.Denitrification apparatus 20 are arranged in boiler tail
After portion's flue 2, the catalyst 21 needed for SCR denitration is disposed with denitrification apparatus 20.In boiler back end ductwork 2 and denitrification apparatus
Denitration gas approach 22 is there also is provided between 20, wherein there is ammonia-gas spraying device 23.To reduce the deviation of flue-gas temperature and flow velocity, de-
Generally deflector 24 is arranged in nitre gas approach 22.Gas bypass flue 30 and boiler back end ductwork integrated arrangement all the way,
The width of gas bypass flue 30 is the full duration of boiler back end ductwork 2, is arranged in boiler back end ductwork 2 near denitration gas approach 22
Side, its entrance is arranged in from before economizer 7 or low temperature superheater 5, and outlet is incorporated in boiler back end ductwork 2 exports, and is gone out
Mouth flue gas is directly mixed in and flue gas after economizer.The porch of gas bypass flue 30 is provided with controllable register 31, baffle plate is being needed
Bypass flue gas flow is opened and can adjust when improving cigarette temperature.In the boiler tail cigarette in the outlet port downstream of gas bypass flue 30
Guiding device 32 is provided with road 2, guiding device 32 is located at boiler back end ductwork 2 and is close on the side wall of denitration gas approach 22 simultaneously
Towards the internal projection of boiler back end ductwork 2.
Embodiment 2：
With reference to shown in Fig. 3, the present embodiment is substantially the same manner as Example 1, and its difference is：30 points of two-way gas bypass flue
Not Wei Yu in two parallel flues, and be placed in boiler back end ductwork 2 near and away from the opposite sides of denitration gas approach 22,
Its entrance is arranged in from before economizer 7, and exiting flue gas are directly mixed in and flue gas after economizer 7.
Using example：
This patent is subject to so that 1000MW afterbody twin flues ultra-supercritical boiler, bypass exhaust gas volumn account for rear pass 18% as an example
Explanation：
1st, conventional design：Stove is wide about 34 meters, bypass flue area about 15~20m2, bypass cigarette is fast to press 12m/s.After considering
The need for bag wall is carried and flue passes through girder steel, bypass flue is twin flue, about 9 meters × 1.5 meters of upper dimension；Denitration entrance cigarette
Gas temperature homogeneity is likely to be breached more than 10 DEG C (highest cigarette temperature subtracts minimum cigarette temperature).
2nd, this patent scheme：Stove is wide about 34 meters, before bypass flue is quoted from rear pass economizer, area about 15~20m2, it is other
Road cigarette speed presses 12m/s.By full stove is wide, built-in gas bypass, only 0.5 meter of depth are set.Carried without the concern for rear bag wall and flue
Girder steel problem is passed through, arrangement is simple.Without external bypass, vertical shaft can reduce about 2 meters with the distance of denitration after boiler.Boiler steel knot
Structure reduces 200 tons, and 1,000,000 yuan of cost savings, boiler floor space saves 140 square metres, the even property of denitration inlet flue gas temperature degree gas
Improve within 5 DEG C.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (4)
1. a kind of boiler back end ductwork with built-in denitration gas bypass, is disposed with some heating surfaces in boiler back end ductwork, its
It is characterised by：There also is provided at least that width is the cigarette of boiler back end ductwork full duration or partial width all the way in boiler back end ductwork
Gas bypass flue, each gas bypass flue is arranged in parallel with one or more levels heating surface, is set at gas bypass flue entrance
There is controllable register, gas bypass flue outlet is incorporated in boiler back end ductwork outlet, and under gas bypass flue outlet position
Guiding device is provided with the boiler back end ductwork of trip, guiding device is located at boiler back end ductwork near denitration gas approach side
On wall and towards boiler back end ductwork internal projection.
2. the boiler back end ductwork with built-in denitration gas bypass as claimed in claim 1, it is characterised in that：Boiler tail cigarette
Road is made up of the cooled enclosure wall superheater on top and the adiabatic flue of bottom, and adiabatic flue separates into two parallel cigarettes by partition wall
Road, is respectively disposed with some heating surfaces in two parallel flues, there is gas proportioning damper two parallel flue ends；Flue gas all the way
Bypass flue is arranged in boiler back end ductwork near the side of denitration gas approach, and in parallel with one or more levels heating surface sets
Put, gas bypass flue width is boiler back end ductwork full duration.
3. the boiler back end ductwork with built-in denitration gas bypass as claimed in claim 1, it is characterised in that：Boiler tail cigarette
Road is made up of the cooled enclosure wall superheater on top and the adiabatic flue of bottom, and adiabatic flue separates into two parallel cigarettes by partition wall
Road, is respectively disposed with some heating surfaces in two parallel flues, there is gas proportioning damper two parallel flue ends；Two-way flue gas
Bypass flue be placed in boiler back end ductwork near and it is away from the opposite sides of denitration gas approach and in parallel with portions under heat face
Set, gas bypass flue width is boiler back end ductwork full duration.
4. the boiler back end ductwork with built-in denitration gas bypass as claimed in claim 1, it is characterised in that：Gas bypass cigarette
Road is made up of several point of flue arranged for interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710008639.8A CN106765239B (en) | 2017-01-05 | 2017-01-05 | Boiler tail flue with built-in denitration flue gas bypass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710008639.8A CN106765239B (en) | 2017-01-05 | 2017-01-05 | Boiler tail flue with built-in denitration flue gas bypass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106765239A true CN106765239A (en) | 2017-05-31 |
| CN106765239B CN106765239B (en) | 2023-05-23 |
Family
ID=58949781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710008639.8A Active CN106765239B (en) | 2017-01-05 | 2017-01-05 | Boiler tail flue with built-in denitration flue gas bypass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106765239B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110559A (en) * | 2021-11-12 | 2022-03-01 | 东方电气集团东方锅炉股份有限公司 | Smoke baffle arrangement structure of double reheat boiler and reheat steam temperature control method |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10306720A (en) * | 1997-05-06 | 1998-11-17 | Mitsubishi Heavy Ind Ltd | Engine plant equipped with denitration device |
| CN101732989A (en) * | 2010-01-08 | 2010-06-16 | 东南大学 | Selective catalytic reduction de-nitrification reactor of combined flue |
| CN102698579A (en) * | 2012-06-01 | 2012-10-03 | 北京国电龙源环保工程有限公司 | Ammonia injection and eddy current mixing device and method of flue gas denitrification system |
| CN102927577A (en) * | 2012-11-20 | 2013-02-13 | 上海锅炉厂有限公司 | Flue distribution manner applied to negative omnidistance load commissioning of denitration equipment |
| CN203264550U (en) * | 2012-12-12 | 2013-11-06 | 盐城工学院 | Diversion apparatus for uniform flow field distribution of Pi type SCR denitrification reactor |
| CN104785020A (en) * | 2015-03-31 | 2015-07-22 | 山东鑫源环保工程技术有限公司 | SCR flue gas denitration dust pre-removing device |
| CN105498531A (en) * | 2015-12-14 | 2016-04-20 | 江苏科行环境工程技术有限公司 | High-dust smoke SCR (selective catalytic reduction) denitrification device applied to cement kiln |
| CN205164507U (en) * | 2015-11-11 | 2016-04-20 | 浙江德创环保科技股份有限公司 | Flue gas denitration flue guide plate device |
| CN205216584U (en) * | 2015-11-30 | 2016-05-11 | 武汉凯迪电力环保有限公司 | SCR (selective catalytic reduction) denitration device |
| CN205592980U (en) * | 2016-03-31 | 2016-09-21 | 大唐环境产业集团股份有限公司 | Denitration economizer high temperature bypass device |
| CN205683835U (en) * | 2016-04-22 | 2016-11-16 | 湖北强达环保科技股份有限公司 | A kind of SCR denitration reactor |
| CN205796962U (en) * | 2016-05-27 | 2016-12-14 | 东方电气集团东方锅炉股份有限公司 | A kind of water conservancy diversion mixing apparatus for SCR underload denitration bypass flue |
-
2017
- 2017-01-05 CN CN201710008639.8A patent/CN106765239B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10306720A (en) * | 1997-05-06 | 1998-11-17 | Mitsubishi Heavy Ind Ltd | Engine plant equipped with denitration device |
| CN101732989A (en) * | 2010-01-08 | 2010-06-16 | 东南大学 | Selective catalytic reduction de-nitrification reactor of combined flue |
| CN102698579A (en) * | 2012-06-01 | 2012-10-03 | 北京国电龙源环保工程有限公司 | Ammonia injection and eddy current mixing device and method of flue gas denitrification system |
| CN102927577A (en) * | 2012-11-20 | 2013-02-13 | 上海锅炉厂有限公司 | Flue distribution manner applied to negative omnidistance load commissioning of denitration equipment |
| CN203264550U (en) * | 2012-12-12 | 2013-11-06 | 盐城工学院 | Diversion apparatus for uniform flow field distribution of Pi type SCR denitrification reactor |
| CN104785020A (en) * | 2015-03-31 | 2015-07-22 | 山东鑫源环保工程技术有限公司 | SCR flue gas denitration dust pre-removing device |
| CN205164507U (en) * | 2015-11-11 | 2016-04-20 | 浙江德创环保科技股份有限公司 | Flue gas denitration flue guide plate device |
| CN205216584U (en) * | 2015-11-30 | 2016-05-11 | 武汉凯迪电力环保有限公司 | SCR (selective catalytic reduction) denitration device |
| CN105498531A (en) * | 2015-12-14 | 2016-04-20 | 江苏科行环境工程技术有限公司 | High-dust smoke SCR (selective catalytic reduction) denitrification device applied to cement kiln |
| CN205592980U (en) * | 2016-03-31 | 2016-09-21 | 大唐环境产业集团股份有限公司 | Denitration economizer high temperature bypass device |
| CN205683835U (en) * | 2016-04-22 | 2016-11-16 | 湖北强达环保科技股份有限公司 | A kind of SCR denitration reactor |
| CN205796962U (en) * | 2016-05-27 | 2016-12-14 | 东方电气集团东方锅炉股份有限公司 | A kind of water conservancy diversion mixing apparatus for SCR underload denitration bypass flue |
Non-Patent Citations (1)
| Title |
|---|
| 王发现等: "《电站锅炉安全技术》", 31 August 2010 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110559A (en) * | 2021-11-12 | 2022-03-01 | 东方电气集团东方锅炉股份有限公司 | Smoke baffle arrangement structure of double reheat boiler and reheat steam temperature control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106765239B (en) | 2023-05-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103041703B (en) | SCR (Selective Catalytic Reduction) flue gas denitration system for burning lignite | |
| JP2657857B2 (en) | Fluid bed combustion apparatus and method with integrated recirculating heat exchanger with lateral outlet chamber | |
| CN105692745B (en) | A kind of hybrid flue gas is evaporated desulfurization wastewater device and method | |
| CN102927577B (en) | Flue distribution manner applied to negative omnidistance load commissioning of denitration equipment | |
| CN103814109B (en) | Coke dry quenching facility | |
| CN106247304B (en) | A kind of double reheat boiler shape of three flue of tail portion arrangement | |
| CN102179171A (en) | Multi-stage themolysis coupled denitration method using front flow field uniformizing device and device thereof | |
| CN107405567A (en) | Compound injection grid arrangement | |
| CA2377681C (en) | Fossil-fired steam generator with a nitrogen removal device for fuel gas | |
| CN103900077A (en) | Integrated modification method for reducing pollutant emission of circulating fluidized bed boiler | |
| KR20160118294A (en) | Compact selective catalytic reduction system for nitrogen oxide reduction in theoxygen-rich exhaust of 500 to 4500 kw internal combustion engines | |
| US20040191709A1 (en) | Economizer bypass with ammonia injection | |
| CN105202556A (en) | Boiler tail flue structure capable of adjusting temperature of main steam and reheated steam and flue gas temperature | |
| CN203002215U (en) | SCR (Selective Catalytic Reduction) flue gas denitration system for burning lignite | |
| CN206439848U (en) | The boiler back end ductwork of denitration gas bypass built in a kind of band | |
| CN105465109B (en) | A kind of device of swirl vane and flue gas gametic fertility | |
| CN106765239A (en) | A kind of boiler back end ductwork with built-in denitration gas bypass | |
| CN102974204A (en) | Reaction device for SNCR (selective non-catalytic reduction) denitration system of circulating fluid bed | |
| CN106582234A (en) | Boiler wide-load urea direct injection pyrolysis flue gas denitrification system | |
| CN102620287B (en) | Circulating fluidized bed boiler with air cooling type cyclone separator | |
| CN104696951B (en) | Boiler-in integrated coupled desulfurization and denitrification method for circulating fluidized bed boiler | |
| CN206424766U (en) | A kind of wide load urea direct-injection pyrolysis smoke denitrating system of boiler | |
| CN203082866U (en) | Fluid-reconstruction-based circulating fluidized bed boiler capable of controlling nitrogen oxide | |
| CN101344260A (en) | Steam generator arrangement | |
| CN205592943U (en) | Circulating fluidized bed boiler |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |