CN208365510U - One kind using the quasi- eastern coal 660MW opposed firing super critical boiler in Xinjiang - Google Patents
One kind using the quasi- eastern coal 660MW opposed firing super critical boiler in Xinjiang Download PDFInfo
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- CN208365510U CN208365510U CN201820997244.5U CN201820997244U CN208365510U CN 208365510 U CN208365510 U CN 208365510U CN 201820997244 U CN201820997244 U CN 201820997244U CN 208365510 U CN208365510 U CN 208365510U
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Abstract
One kind using the quasi- eastern coal 660MW opposed firing super critical boiler in Xinjiang, it is related to a kind of boiler, to solve existing boiler when using Xinjiang quasi- east coal, coking " bridging " occurs in boiler internal and leads to boiler tube bursting blowing out, boiler is made to face the problem of great safety.The utility model includes economizer system, water screen system, superheater system, reheater system, activation system, combustion system and air and gas system, and the combustion system includes multiple main burners and multiple SOFA burners；Multiple main burners and multiple SOFA burners are oppositely arranged in the two sides of burner hearth respectively and are fixed on water screen system, and burner can form flames in opposing direction in furnace chamber inner combustion；Superheater system includes roof enclosure wall superheater, low temperature superheater, split screen superheater, finishing superheater and header；Activation system is provided on air and gas system, the tail portion of burner hearth is arranged in low temperature superheater, economizer system and reheater system.The utility model is suitable for the quasi- eastern burning of coal in Xinjiang.
Description
Technical field
The utility model relates to a kind of boilers, and in particular to it is overcritical that one kind uses the quasi- eastern coal 660MW opposed firing in Xinjiang
Boiler.
Background technique
Quasi- east coal belongs to the strong coking in the quasi- east area in Xinjiang, seriously stains, the high-moisture coal of heavy corrosion, in the coal
Na2The alkali metal contents such as O and CaO are high, and it is readily volatilized under the high temperature conditions to be formed by sulfuric acid complex salt, are in molten
State forms the ash deposition of sintering or caking property by that can be condensed on heating surface pipe when heating surface.It is formed by such deposition
Object majority occurs to corrode in about 800 DEG C of flue-gas temperature or so of convection heating surface region so as to cause high-temperature surface alkali metal,
Simultaneously because CaO is formed by compound with extremely strong contamination, in tail portion, stifled ash easily occurs for low temperature heating surface, can serious shadow
Ring heat transfer and the unit safety operation of boiler heating surface.
The boiler practical operation situation for using by Xinjiang region Duo Tai or mixing the quasi- eastern coal of burning is counted, many power plants' combustions
When with quasi- eastern coal, boiler global facility occurs, coking occurs, stains, position from burner hearth to horizontal flue superheater reheater,
Back-end surfaces low-temperature reheater, low temperature superheater, economizer etc. are arrived again, and the contamination of large area causes slagging " bridging " existing
As serious, boiler tube bursting, blowing out frequently occur.
Utility model content
The utility model occurs coking in boiler internal and " takes to solve existing boiler when using Xinjiang quasi- east coal
Bridge " and lead to boiler tube bursting blowing out, so that boiler is faced the problem of great safety, and provide one kind and use the quasi- eastern coal in Xinjiang
660MW opposed firing super critical boiler.
The utility model adopts the technical scheme that solve above-mentioned technical problem:
It include economizer system, water screen system, superheater system, reheater system, activation system, combustion system and
Air and gas system,
The combustion system includes multiple main burners and multiple SOFA burners；
Multiple main burners and multiple SOFA burners are oppositely arranged in the two sides of burner hearth respectively and are fixed on water-cooling wall system
On system, burner can form flames in opposing direction in furnace chamber inner combustion；
Each main burner includes central air hose, coal-feeding tube, secondary air channel, tertiary-air pipe, Secondary Air cyclone, tertiary air
Cyclone and cabinet；
Central air hose, coal-feeding tube, secondary air channel and tertiary-air pipe are successively set in together from inside to outside, it is adjacent between the two
Channel is formed, coal-feeding tube is arranged on cabinet, and pulverized coal concentrator, coal-feeding tube and Secondary Air are equipped between central air hose and coal-feeding tube
Secondary Air cyclone is equipped between pipe, tertiary-air pipe is equipped with tertiary air cyclone, and the outlet of tertiary-air pipe is arranged in water-cooling wall
It is connected in system and with burner hearth.
Superheater system includes roof enclosure wall superheater, low temperature superheater, split screen superheater, finishing superheater and header；
The top of burner hearth, roof enclosure wall superheater, low temperature superheater, split screen superheater and final stage mistake is arranged in the header
Hot device is arranged in header,
Water screen system is connect with air and gas system, and activation system, low temperature superheater, economizer system are provided on air and gas system
The tail portion of burner hearth is arranged in system and reheater system.
The utility model has the advantages that compared with prior art
One, the utility model burner uses opposed firing mode, reduces burner region thermic load, and it is high to increase after-flame
Degree, ensure that lower furnace load, flue-gas temperature can be made sufficiently to be reduced in burner hearth, make burner hearth coking tendency drop
It is low.A fairly large number of soot blower is set in entire hearth region, radiation heating-surface and convection heating surface, guarantees the coking of heating surface
Amount makes boiler safety stable operation in controlled range.
Two, the outlet at the center of multiple main burners of the utility model setting is direct current wind, and First air is coal dust mixing,
Secondary Air and tertiary air are rotary wind, and the flame of generation is more stable, keeps the effect of opposed firing more preferable.
Three, the turbulent burner that liquidates when igniting is supported to burn by itself reflux, and initial stage kindling ability is strong.
Detailed description of the invention
One, Fig. 1 is the schematic diagram of the utility model；
Two, Fig. 2 is the schematic diagram of main burner 6-1.
Specific embodiment
Specific embodiment 1: illustrating present embodiment in conjunction with Fig. 1 and Fig. 2, present embodiment includes economizer system
1, water screen system 2, superheater system 3, reheater system 4, activation system 5, combustion system 6 and air and gas system 7；
The combustion system 6 includes multiple main burner 6-1 and multiple SOFA burner 6-2；
Multiple main burner 6-1 and multiple SOFA burner 6-2 are oppositely arranged in the two sides of burner hearth respectively and are fixed on water
In cold wall system 2, burner can form flames in opposing direction in furnace chamber inner combustion；
Each main burner 6-1 includes central air hose 6-1-1, coal-feeding tube 6-1-2, secondary air channel 6-1-3, tertiary-air pipe 6-
1-4, Secondary Air cyclone 6-1-5, tertiary air cyclone 6-1-6 and cabinet；
Central air hose 6-1-1, coal-feeding tube 6-1-2, secondary air channel 6-1-3 and tertiary-air pipe 6-1-4 successively cover from inside to outside
It is fitted together, adjacent to form channel between the two, coal-feeding tube 6-1-2 is arranged on cabinet, central air hose 6-1-1 and coal-feeding tube 6-
It is equipped with pulverized coal concentrator 6-1-7 between 1-2, Secondary Air cyclone 6-1- is equipped between coal-feeding tube 6-1-2 and secondary air channel 6-1-3
5, tertiary-air pipe 6-1-4 are equipped with tertiary air cyclone 6-1-6, and the outlet of tertiary-air pipe 6-1-4 is arranged on water screen system 2
And it is connected to burner hearth.
Superheater system 3 includes roof enclosure wall superheater 3-1, low temperature superheater 3-2, split screen superheater 3-3, final stage overheat
Device 3-4 and header 3-5；
The top of burner hearth, roof enclosure wall superheater 3-1, low temperature superheater 3-2, split screen overheat is arranged in the header 3-5
Device 3-3 and finishing superheater 3-4 is arranged on header 3-5,
Water screen system 2 is connect with air and gas system 7, is provided with activation system 5 on air and gas system 7, low temperature superheater 3-2,
The tail portion of burner hearth is arranged in economizer system 1 and reheater system 4.
Specific embodiment 2: illustrate present embodiment in conjunction with Fig. 1, the pipe of economizer system 1 described in present embodiment
Road is the light pipe or scale pipe of in-line arrangement.
Other compositions and connection relationship are same as the specific embodiment one.
Specific embodiment 3: illustrating present embodiment in conjunction with Fig. 1, reheater system 4 described in present embodiment includes
Low-temperature reheater 4-1 and final reheater 4-2；
The low-temperature reheater 4-1 and low temperature superheater 3-2 is disposed side by side on the tail portion of burner hearth, and final reheater 4-2 is set
It sets in burner hearth adjacent to exit.
Other compositions and connection relationship are identical with embodiment two.
Specific embodiment 4: illustrating present embodiment in conjunction with Fig. 1, air and gas system 7 described in present embodiment includes sky
Air preheater 7-1, air duct 7-2 and flue 7-3；
Air preheater 7-1 is provided between air duct 7-2 and flue 7-1, on air duct 7-2 and the combustion system 6
The tail portion of burner hearth is arranged in cabinet connection, flue 7-3.
Other compositions and connection relationship are the same as the specific implementation mode 3.
Specific embodiment 5: illustrating present embodiment in conjunction with Fig. 1, activation system 5 described in present embodiment includes big
Gas flash vessel 5-1 and drain tank 5-2；
Atmosphere flash vessel 5-1 is arranged at the smoke outlet of flue, passes through pipe between drain tank 5-2 and atmosphere flash vessel 5-1
Road connection.
Other compositions and connection relationship are identical as specific embodiment four.
Claims (5)
1. one kind uses the quasi- eastern coal 660MW opposed firing super critical boiler in Xinjiang, including economizer system (1), water screen system
(2), superheater system (3), reheater system (4), activation system (5), combustion system (6) and air and gas system (7), feature exists
In: the combustion system (6) includes multiple main burners (6-1) and multiple SOFA burners (6-2)；
Multiple main burners (6-1) and multiple SOFA burners (6-2) are oppositely arranged in the two sides of burner hearth respectively and are fixed on water
In cold wall system (2), burner can form flames in opposing direction in furnace chamber inner combustion；
Each main burner (6-1) includes central air hose (6-1-1), coal-feeding tube (6-1-2), secondary air channel (6-1-3), tertiary air
Manage (6-1-4), Secondary Air cyclone (6-1-5), tertiary air cyclone (6-1-6) and cabinet；
Central air hose (6-1-1), coal-feeding tube (6-1-2), secondary air channel (6-1-3) and tertiary-air pipe (6-1-4) from inside to outside according to
Secondary to be set in together, adjacent to form channel between the two, coal-feeding tube (6-1-2) is arranged on cabinet, central air hose (6-1-1) and
It is equipped with pulverized coal concentrator (6-1-7) between coal-feeding tube (6-1-2), is equipped between coal-feeding tube (6-1-2) and secondary air channel (6-1-3)
Secondary Air cyclone (6-1-5), tertiary-air pipe (6-1-4) are equipped with tertiary air cyclone (6-1-6), tertiary-air pipe (6-1-4)
Outlet be arranged and be connected on water screen system (2) and with burner hearth,
Superheater system (3) includes roof enclosure wall superheater (3-1), low temperature superheater (3-2), split screen superheater (3-3), final stage
Superheater (3-4) and header (3-5)；
The top of burner hearth, roof enclosure wall superheater (3-1), low temperature superheater (3-2), split screen mistake is arranged in the header (3-5)
Hot device (3-3) and finishing superheater (3-4) are arranged on header (3-5),
Water screen system (2) is connect with air and gas system (7), and activation system (5), low temperature superheater are provided on air and gas system (7)
The tail portion of burner hearth is arranged in (3-2), economizer system (1) and reheater system (4).
2. one kind according to claim 1 uses the quasi- eastern coal 660MW opposed firing super critical boiler in Xinjiang, feature exists
In: the pipeline of the economizer system (1) is the light pipe or scale pipe of in-line arrangement.
3. one kind according to claim 2 uses the quasi- eastern coal 660MW opposed firing super critical boiler in Xinjiang, feature exists
In: the reheater system (4) includes low-temperature reheater (4-1) and final reheater (4-2)；
Low-temperature reheater (4-1) and the low temperature superheater (3-2) are disposed side by side on the tail portion of burner hearth, final reheater (4-2)
It is arranged in burner hearth adjacent to exit.
4. one kind according to claim 3 uses the quasi- eastern coal 660MW opposed firing super critical boiler in Xinjiang, feature exists
In: the air and gas system (7) includes air preheater (7-1), air duct (7-2) and flue (7-3)；
It is provided between air duct (7-2) and flue 7-1 air preheater (7-1), air duct (7-2) and the combustion system (6)
On cabinet connection, the tail portion of burner hearth is arranged in flue (7-3).
5. one kind according to claim 4 uses the quasi- eastern coal 660MW opposed firing super critical boiler in Xinjiang, feature exists
In: the activation system (5) includes atmosphere flash vessel (5-1) and drain tank (5-2)；
Atmosphere flash vessel (5-1) is arranged at the smoke outlet of flue, passes through between drain tank (5-2) and atmosphere flash vessel (5-1)
Pipeline connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820997244.5U CN208365510U (en) | 2018-06-26 | 2018-06-26 | One kind using the quasi- eastern coal 660MW opposed firing super critical boiler in Xinjiang |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820997244.5U CN208365510U (en) | 2018-06-26 | 2018-06-26 | One kind using the quasi- eastern coal 660MW opposed firing super critical boiler in Xinjiang |
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| CN208365510U true CN208365510U (en) | 2019-01-11 |
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| CN201820997244.5U Active CN208365510U (en) | 2018-06-26 | 2018-06-26 | One kind using the quasi- eastern coal 660MW opposed firing super critical boiler in Xinjiang |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737389A (en) * | 2019-02-27 | 2019-05-10 | 哈尔滨锅炉厂有限责任公司 | A kind of quasi- eastern coal low-temperature burning control system |
-
2018
- 2018-06-26 CN CN201820997244.5U patent/CN208365510U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737389A (en) * | 2019-02-27 | 2019-05-10 | 哈尔滨锅炉厂有限责任公司 | A kind of quasi- eastern coal low-temperature burning control system |
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