CN106402847A - Burner arrangement structure with tertiary air and SOFA air arranged alternately - Google Patents
Burner arrangement structure with tertiary air and SOFA air arranged alternately Download PDFInfo
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- CN106402847A CN106402847A CN201610838853.1A CN201610838853A CN106402847A CN 106402847 A CN106402847 A CN 106402847A CN 201610838853 A CN201610838853 A CN 201610838853A CN 106402847 A CN106402847 A CN 106402847A
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- Prior art keywords
- sofa
- air
- nozzles
- group
- spout
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a burner arrangement structure with tertiary air and SOFA air arranged alternately, belongs to the technical field of thermal power generation, and solves problems that the carbon content of fly ash of an existing power plant boiler is increased and the reduction extent of the NOx production amount of the boiler does not reach a designed value. Four-corner tangential arrangement is adopted; each corner of a burner comprises two groups of nozzles, the second group of nozzles is located above the first group of nozzles, the first group of nozzles includes a plurality of primary air nozzles and a plurality of secondary air nozzles, the second group of nozzles includes a plurality of tertiary air nozzles and a plurality of SOFA air nozzles, the secondary air nozzles and the primary air nozzles are sequentially arranged in a cross manner from bottom to top, one secondary air nozzle is located on the upmost side, the SOFA air nozzles and the tertiary air nozzles are sequentially arranged in a cross manner from bottom to top, and one SOFA air nozzle is located on the upmost side. The structure is applied to arrangement of the boiler burner.
Description
Technical field
The present invention relates to a kind of tertiary air and SOFA wind intert the burner arrangement structure of arrangement, belong to thermal power generating technology
Field.
Background technology
With the attention of the pollutant emission to electricity power enterprise for the country, increasing power plant has carried out low NOx combustion
Device is transformed, and by original no air distribution mode of SOFA, transforms to the air distribution mode (as Fig. 3) employing SOFA, that is, exists
SOFA air port is added above original tertiary air spout.Improved burner occurs that the speed of tertiary air is higher, simultaneously
The low situation of SOFA wind velocity, due to all have ignored the impact converting to boiler combustion of tertiary air position in transformation, simultaneously
Have ignored the effect that the high-speed jet of tertiary air spout is played to the injection of SOFA wind, after leading to transformation, boiler flyash carbon content increases
Plus, boiler NOx yield reduces amplitude and is not up to design load, safety and economy that impact coal-burning boiler runs.
Content of the invention
The present invention is to increase to solve existing boiler of power plant unburned carbon in flue dust, and boiler NOx yield reduces amplitude not
Reach the problem of design load, and then provide a kind of tertiary air and SOFA wind interts the burner arrangement structure of arrangement.
The present invention be employed technical scheme comprise that by solving above-mentioned technical problem：
A kind of tertiary air and SOFA wind intert the burner arrangement structure of arrangement, using quadrangle tangential circle arrangement, burner
Each angle all includes two groups of spouts, and second group of spout is located at the top of first group of spout, and first group of spout includes some First air
Spout and some overfire air ports, second group of spout includes some tertiary air spouts and some SOFA wind snouts, overfire air port
And wind snout arranged crosswise successively from the bottom to top, its top is overfire air port, SOFA wind snout and tertiary air spout
Arranged crosswise successively from the bottom to top, its top is SOFA wind snout.
First group of spout includes four layers of wind snout and five layers of overfire air port, and second group of spout includes two-layer tertiary air
Spout and three layers of SOFA wind snout.
The present invention compared with prior art has the effect that：
, from the bottom to top successively after arranged crosswise, high speed tertiary air has injection to SOFA wind for SOFA wind snout and tertiary air spout
Effect, improves the penetration capacity of SOFA；Insert tertiary air in SOFA wind, increased the wind of stage air feed after burner entirety
Rate, that is, be equivalent to the wind rate that increased SOFA wind, thus preferably allowing SOFA wind mix with stove cigarette and uncombusted carbon granules, Neng Gougeng
The good growing amount of minimizing boiler NOx and raising boiler efficiency.
Compared with the structure of existing burner, cost is relatively low, and operation expense is cheap, and system operation is reliable, permissible
Longtime running, the growing amount of boiler NOx are reduced, boiler efficiency is improved.
Brief description
Fig. 1 is spout arrangement schematic diagram in the present invention (one jiao in quadrangle tangential circle arrangement)；
Fig. 2 is the existing spout arrangement schematic diagram being provided without SOFA wind；
Fig. 3 is existing SOFA wind snout and tertiary air spout schematic diagram arranged apart.
Specific embodiment
Specific embodiment one：In conjunction with Fig. 1～Fig. 3 illustrate present embodiment, a kind of tertiary air of present embodiment with
SOFA wind interts the burner arrangement structure of arrangement, and using quadrangle tangential circle arrangement, each angle of burner all includes two groups of spouts,
Second group of spout is located at the top of first group of spout, and first group of spout includes some wind snouts 1 and some overfire air ports
2, second group of spout includes some tertiary air spouts 3 and some SOFA wind snouts 4, overfire air port 2 and wind snout 1 by under
Supreme arranged crosswise successively, its top is overfire air port 2, and SOFA wind snout 4 and tertiary air spout 3 are handed over from the bottom to top successively
Fork arrangement, its top is SOFA wind snout 4.
The present invention is applied to burner quadrangle tangential circle arrangement, is provided without the air distribution mode (as Fig. 2) of SOFA design, or
But person has adopted SOFA wind air distribution SOFA wind with tertiary air situation arranged apart (as shown in Figure 3), such as：Fired with typical
In burner quadrangle tangential circle arrangement, burner structure, the tertiary air spout 3 containing corner arrangement, configuration bunker formula steel ball grind
The boiler of powder system.
By mobile for some former tertiary air spouts 3 to some SOFA wind snouts 4, form the interspersed of tertiary air and SOFA wind
Arrangement, decrease because tertiary air speed higher, simultaneously SOFA wind velocity low and to stove chamber inner combustion produce negative effect.Combustion
In burner, wind snout 1, a number of plies for overfire air port 2, tertiary air spout 3 and SOFA wind snout 4 are according to actual NOx content
Fixed.
Specific embodiment two：In conjunction with Fig. 1, present embodiment is described, first group of spout include four layers of wind snout 1 and
Five layers of overfire air port 2, second group of spout includes two-layer tertiary air spout 3 and three layers of SOFA wind snout 4.It is so designed that, will be former
Two-layer tertiary air spout 3 is moved upward between three layers of SOFA wind snout 4, forms the interspersed arrangement of tertiary air and SOFA wind, makes
High speed tertiary air has ejector action to low speed SOFA wind, improves the penetration capacity of SOFA wind；Tertiary air is inserted in SOFA wind,
Increased stage air feed wind rate after burner entirety, that is, be equivalent to and increased SOFA wind wind rate, thus preferably allow SOFA wind with
Stove cigarette and the mixing of uncombusted carbon granules, can preferably reduce the growing amount of boiler NOx and improve boiler efficiency.Other forms and connects
Connect relation identical with specific embodiment one.
Claims (2)
1. a kind of tertiary air and SOFA wind intert arrangement burner arrangement structure it is characterised in that：Using quadrangle tangential circle arrangement,
Each angle of burner all includes two groups of spouts, and second group of spout is located at the top of first group of spout, if first group of spout includes
A dry wind snout (1) and some overfire air ports (2), second group of spout includes some tertiary air spouts (3) and some SOFA
Wind snout (4), overfire air port (2) and wind snout (1) arranged crosswise successively from the bottom to top, its top is secondary wind spray
Mouthful (2), SOFA wind snout (4) and tertiary air spout (3) arranged crosswise successively from the bottom to top, its top is SOFA wind snout
(4).
2. a kind of tertiary air according to claim 1 and SOFA wind intert the burner arrangement structure of arrangement, and its feature exists
In：First group of spout includes four layers of wind snout (1) and five layers of overfire air port (2), and second group of spout includes two-layer three times
Wind snout (3) and three layers of SOFA wind snout (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610838853.1A CN106402847A (en) | 2016-09-21 | 2016-09-21 | Burner arrangement structure with tertiary air and SOFA air arranged alternately |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610838853.1A CN106402847A (en) | 2016-09-21 | 2016-09-21 | Burner arrangement structure with tertiary air and SOFA air arranged alternately |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106402847A true CN106402847A (en) | 2017-02-15 |
Family
ID=57996728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610838853.1A Pending CN106402847A (en) | 2016-09-21 | 2016-09-21 | Burner arrangement structure with tertiary air and SOFA air arranged alternately |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106402847A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5913287A (en) * | 1998-01-14 | 1999-06-22 | Csendes; Ernest | Method and apparatus for enhancing the fluidization of fuel particles in coal burning boilers and fluidized bed combustion |
| CN1786564A (en) * | 2005-12-20 | 2006-06-14 | 西安热工研究院有限公司 | Spliting arranging method for new three area burner of tangential circle boiler |
| US20080236459A1 (en) * | 2007-03-28 | 2008-10-02 | Wessel Richard A | Recovery boiler combustion air system with intermediate air ports vertically aligned with multiple levels of tertiary air ports |
| CN101737771A (en) * | 2009-12-18 | 2010-06-16 | 上海锅炉厂有限公司 | Multistage over fire air distributing mode |
| CN102721043A (en) * | 2012-07-10 | 2012-10-10 | 烟台龙源电力技术股份有限公司 | Pulverized coal fired boiler with wall-attachment secondary air and grid burning-out air |
| CN204629460U (en) * | 2015-04-28 | 2015-09-09 | 无锡华光锅炉股份有限公司 | Tertiary air staged combustion device |
-
2016
- 2016-09-21 CN CN201610838853.1A patent/CN106402847A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5913287A (en) * | 1998-01-14 | 1999-06-22 | Csendes; Ernest | Method and apparatus for enhancing the fluidization of fuel particles in coal burning boilers and fluidized bed combustion |
| CN1786564A (en) * | 2005-12-20 | 2006-06-14 | 西安热工研究院有限公司 | Spliting arranging method for new three area burner of tangential circle boiler |
| US20080236459A1 (en) * | 2007-03-28 | 2008-10-02 | Wessel Richard A | Recovery boiler combustion air system with intermediate air ports vertically aligned with multiple levels of tertiary air ports |
| CN101737771A (en) * | 2009-12-18 | 2010-06-16 | 上海锅炉厂有限公司 | Multistage over fire air distributing mode |
| CN102721043A (en) * | 2012-07-10 | 2012-10-10 | 烟台龙源电力技术股份有限公司 | Pulverized coal fired boiler with wall-attachment secondary air and grid burning-out air |
| CN204629460U (en) * | 2015-04-28 | 2015-09-09 | 无锡华光锅炉股份有限公司 | Tertiary air staged combustion device |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Dang Wenyue Inventor after: Liu Wei Inventor after: Shu Jiwei Inventor after: Meng Fanbing Inventor after: Jin Hongda Inventor after: Li Yuankai Inventor after: Meng Xiangting Inventor after: Shu Zhan Inventor before: Dang Wenyue Inventor before: Liu Wei Inventor before: Shu Jiwei Inventor before: Meng Fanbing Inventor before: Jin Hongda |
|
| CB03 | Change of inventor or designer information | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170215 |
|
| WD01 | Invention patent application deemed withdrawn after publication |