CN107795983A - Tertiary air boiler coal-ash combustion system - Google Patents
Tertiary air boiler coal-ash combustion system Download PDFInfo
- Publication number
- CN107795983A CN107795983A CN201711095883.9A CN201711095883A CN107795983A CN 107795983 A CN107795983 A CN 107795983A CN 201711095883 A CN201711095883 A CN 201711095883A CN 107795983 A CN107795983 A CN 107795983A
- Authority
- CN
- China
- Prior art keywords
- air
- spout
- tertiary
- backstop
- separator
- 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
Links
Classifications
-
- 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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- 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
- F23C7/008—Flow control devices
-
- 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
- F23L1/00—Passages or apertures for delivering primary air for combustion
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- 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
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
Abstract
The present invention relates to coal powder burning technology field,Specially a kind of tertiary air boiler coal-ash combustion system,It can preferably realize Researched of Air Staging Combustion Burning Pulverized Coal,N0x discharge is reduced simultaneously,Main burning area is sequentially disposed with the first overfiren air port from top to bottom,First tertiary air orifice,First primary air nozzle,Second tertiary air orifice,Second primary air nozzle and the second overfiren air port,First tertiary air orifice and the second tertiary air orifice connect separator one end by branch pipe respectively,Separator other end connection supervisor,Tertiary air is passed through in supervisor,First primary air nozzle and the second primary air nozzle are all connected with Dense Dilute Pulverized Coal Separator,Dense Dilute Pulverized Coal Separator includes air channel and spout,Positive stop and backstop are provided with air channel,Backstop is separated out dense side upper air duct and light side lower air duct,The air outlet connection spout in air channel,Lower spout and upper spout are separated into by dividing plate in spout,Lower spout correspondingly connects light side lower air duct,Upper spout correspondingly connects dense side upper air duct,Secondary block is provided with upper spout and is separated into side outlet and underside outlet.
Description
Technical field
The present invention relates to coal powder burning technology field, specially a kind of tertiary air boiler coal-ash combustion system.
Background technology
Domestic small coal fired boilers are more using Ball Mill, have many power plant to the pulverized coal carried by hot air burning system processed of storage in band tertiary air
The low N0x of system boiler is transformed, and its method is still using integrated air fractional combustion in stove+low N0x Burner Technologies, is burnt
The high-order arrangement of wind (S0FA), tertiary air are displaced downwardly on burner on Secondary Air (it is equivalent to C0FA wind position), or by part
Tertiary air as burnout degree arrange, this layout pattern easily cause combustion centre move up it is more, it is impossible to realize air classification well
Burning.
The content of the invention
In order to solve the above problems, the invention provides a kind of tertiary air boiler coal-ash combustion system, and it can be preferably real
Existing Researched of Air Staging Combustion Burning Pulverized Coal, while reduce N0x discharge.
Its technical scheme is such：A kind of tertiary air boiler coal-ash combustion system, it is characterised in that main burning area is from upper
The first overfiren air port, the first tertiary air orifice, the first primary air nozzle, the second tertiary air orifice, the second First air are sequentially disposed with
Mouth and the second overfiren air port, first tertiary air orifice connect separator one by branch pipe respectively with second tertiary air orifice
End, the separator other end connection are responsible for, and tertiary air, first primary air nozzle and described second are passed through in the supervisor
Primary air nozzle is all connected with Dense Dilute Pulverized Coal Separator, and the Dense Dilute Pulverized Coal Separator includes air channel and spout, set in the air channel
There are positive stop and backstop, the backstop is separated out dense side upper air duct and light side lower air duct, the air outlet connection in the air channel
The spout, the spout is interior to be separated into lower spout and upper spout by dividing plate, and the lower spout is correspondingly connected under the light side
Air channel, the upper spout correspondingly connect the dense side upper air duct, be provided with the upper spout secondary block be separated into upside go out
Mouth and underside outlet.
It is further characterized by, and the positive stop is fixedly connected with the air channel inwall bottom surface and two sides, after described
Block is fixedly connected with two sides of the air channel inwall；
The positive stop and backstop include rising ramp and falling ramp, and the air channel above the backstop is provided with
Inclined-plane corresponding with the rising ramp and falling ramp of the backstop.
After system using the present invention, tertiary air realizes the deep or light combustion of vertical direction every compact Layout between the upper and lower with First air
Burn, so as to control the excess air coefficient in primary zone, while can preferably realize Researched of Air Staging Combustion Burning Pulverized Coal, reduce NOx discharge, and
First air first carries out primary concentration separation in burner by breeze airflow by positive stop and backstop, and it is (small to be divided into dense stock
Stock) and light stock (big stock), secondary block progress secondary separation of the dense stock air-flow in upper spout, formed in outlet multiply it is small and
Dense breeze airflow, small fire point big fire, finally lights the big flame of whole First air, flameholding, reduces original nitrogen oxides
Discharge.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is Dense Dilute Pulverized Coal Separator structural representation.
Embodiment
See Fig. 1, shown in Fig. 2, a kind of tertiary air boiler coal-ash combustion system, main burning area is sequentially disposed with from top to bottom
One overfiren air port 1, the first tertiary air orifice 2, the first primary air nozzle 3, the second tertiary air orifice 4, the second primary air nozzle 5 and the second two times
Air port 6, the first tertiary air orifice 2 and the second tertiary air orifice 4 connect the one end of separator 8 by branch pipe 7 respectively, and separator 8 is another
One end connection supervisor 9, separator 8 are similar to triplate line, an import, two outlets, are responsible in 9 and are passed through tertiary air, the
One primary air nozzle 3 and the second primary air nozzle 5 are all connected with Dense Dilute Pulverized Coal Separator 10, and Dense Dilute Pulverized Coal Separator 10 includes the He of air channel 11
Spout 12, positive stop 13 and backstop 14 is provided with air channel 11, backstop 14 is separated out dense side upper air duct 15 and light side leeward
Road 16, the air outlet connection spout 12 in air channel 11, spout 12 is interior to be separated into lower spout 18 and upper spout 19, lower spray by dividing plate 17
Mouth 18 is corresponding to connect light side lower air ducts 16, and upper spout 19 is corresponding to connect dense side upper air duct 15, and secondary gear is provided with upper spout 18
Block 20 is separated into side outlet and underside outlet.
Positive stop 13 is fixedly connected with the inwall bottom surface of air channel 11 and two sides, and backstop 14 is fixedly connected with the inwall of air channel 11
Two sides；Positive stop 13 and backstop 14 include rising ramp and falling ramp, and the air channel of the top of backstop 14 is provided with
Inclined-plane corresponding with the rising ramp and falling ramp of backstop 14.
Claims (3)
1. a kind of tertiary air boiler coal-ash combustion system, it is characterised in that main burning area is sequentially disposed with the one or two from top to bottom
Secondary air port, the first tertiary air orifice, the first primary air nozzle, the second tertiary air orifice, the second primary air nozzle and the second overfiren air port, it is described
First tertiary air orifice connects separator one end, the separator other end by branch pipe respectively with second tertiary air orifice
Connection is responsible for, and is passed through tertiary air in the supervisor, first primary air nozzle and second primary air nozzle are all connected with deep or light coal
Powder separator, the Dense Dilute Pulverized Coal Separator includes air channel and spout, positive stop and backstop is provided with the air channel, described
Backstop is separated out dense side upper air duct and light side lower air duct, and the air outlet in the air channel connects the spout, led in the spout
Cross dividing plate and be separated into lower spout and upper spout, the lower spout correspondingly connects the light side lower air duct, and the upper spout correspondingly connects
Lead to the dense side upper air duct, being provided with secondary block in the upper spout is separated into side outlet and underside outlet.
2. a kind of tertiary air boiler coal-ash combustion system according to claim 1, it is characterised in that the positive stop is fixed
The air channel inwall bottom surface and two sides are connected, the backstop is fixedly connected with two sides of the air channel inwall.
3. a kind of tertiary air boiler coal-ash combustion system according to claim 1, it is characterised in that the positive stop is with after
Block includes rising ramp and falling ramp, and the air channel above the backstop is provided with the rising with the backstop
Inclined-plane corresponding to inclined-plane and falling ramp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711095883.9A CN107795983A (en) | 2017-11-09 | 2017-11-09 | Tertiary air boiler coal-ash combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711095883.9A CN107795983A (en) | 2017-11-09 | 2017-11-09 | Tertiary air boiler coal-ash combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107795983A true CN107795983A (en) | 2018-03-13 |
Family
ID=61549358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711095883.9A Pending CN107795983A (en) | 2017-11-09 | 2017-11-09 | Tertiary air boiler coal-ash combustion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107795983A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112555819A (en) * | 2020-11-18 | 2021-03-26 | 哈尔滨锅炉厂有限责任公司 | Tangential combustor arrangement mode for ultralow-load flexible peak regulation of boiler |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1439841A (en) * | 2002-02-22 | 2003-09-03 | 清华大学 | Enriched multiple straight-through coal burners |
| JP2008170040A (en) * | 2007-01-10 | 2008-07-24 | Babcock Hitachi Kk | Pulverized coal burning boiler and pulverized coal combustion method of pulverized coal burning boiler |
| CN202253604U (en) * | 2011-07-19 | 2012-05-30 | 武汉华是能源环境工程有限公司 | Tertiary air low-nitrogen combustion arrangement structure |
| CN202813353U (en) * | 2012-09-28 | 2013-03-20 | 烟台龙源电力技术股份有限公司 | Intermediate silo type milling boiler |
| CN105299638A (en) * | 2014-06-30 | 2016-02-03 | 四川川锅锅炉有限责任公司 | Low-NOx combustor arrangement mode and structure for intermediate storage bunker coal pulverizing system |
| CN106196020A (en) * | 2015-05-06 | 2016-12-07 | 上海四方锅炉集团工程成套股份有限公司 | The tertiary air of pulverized-coal fired boiler is made into the method and device that First air carries out burning |
| CN206247319U (en) * | 2016-12-02 | 2017-06-13 | 北京国电龙高科环境工程技术有限公司 | A kind of eddy flow boiler combustion system for tertiary air separate |
| CN207527570U (en) * | 2017-11-09 | 2018-06-22 | 无锡华光锅炉股份有限公司 | A kind of tertiary air boiler coal-ash combustion system |
-
2017
- 2017-11-09 CN CN201711095883.9A patent/CN107795983A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1439841A (en) * | 2002-02-22 | 2003-09-03 | 清华大学 | Enriched multiple straight-through coal burners |
| JP2008170040A (en) * | 2007-01-10 | 2008-07-24 | Babcock Hitachi Kk | Pulverized coal burning boiler and pulverized coal combustion method of pulverized coal burning boiler |
| CN202253604U (en) * | 2011-07-19 | 2012-05-30 | 武汉华是能源环境工程有限公司 | Tertiary air low-nitrogen combustion arrangement structure |
| CN202813353U (en) * | 2012-09-28 | 2013-03-20 | 烟台龙源电力技术股份有限公司 | Intermediate silo type milling boiler |
| CN105299638A (en) * | 2014-06-30 | 2016-02-03 | 四川川锅锅炉有限责任公司 | Low-NOx combustor arrangement mode and structure for intermediate storage bunker coal pulverizing system |
| CN106196020A (en) * | 2015-05-06 | 2016-12-07 | 上海四方锅炉集团工程成套股份有限公司 | The tertiary air of pulverized-coal fired boiler is made into the method and device that First air carries out burning |
| CN206247319U (en) * | 2016-12-02 | 2017-06-13 | 北京国电龙高科环境工程技术有限公司 | A kind of eddy flow boiler combustion system for tertiary air separate |
| CN207527570U (en) * | 2017-11-09 | 2018-06-22 | 无锡华光锅炉股份有限公司 | A kind of tertiary air boiler coal-ash combustion system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112555819A (en) * | 2020-11-18 | 2021-03-26 | 哈尔滨锅炉厂有限责任公司 | Tangential combustor arrangement mode for ultralow-load flexible peak regulation of boiler |
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