CN204986988U - Bed boiler fuel detonation suppressant system that damps down is vulcanized in circulation - Google Patents
Bed boiler fuel detonation suppressant system that damps down is vulcanized in circulation Download PDFInfo
- Publication number
- CN204986988U CN204986988U CN201520679743.6U CN201520679743U CN204986988U CN 204986988 U CN204986988 U CN 204986988U CN 201520679743 U CN201520679743 U CN 201520679743U CN 204986988 U CN204986988 U CN 204986988U
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- China
- Prior art keywords
- air
- bed boiler
- plenum
- fluidized bed
- circulating fluidized
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model discloses a bed boiler fuel detonation suppressant system that damps down is vulcanized in circulation, vulcanize the bed boiler including the circulation, the circulation is vulcanized the bed boiler and is included furnace, the air intake on furnace upper portion has connected gradually cyclone, the over heater, a coal economizer, air heater and draught fan, the feed inlet of furnace lower part is connected with the feeder, the returning charge mouth of furnace lower part is connected with the returning charge ware, the bottom of returning charge ware links to each other with the overfire air fan, the top of returning charge ware links to each other with cyclone's bottom, furnace's bottom is provided with the plenum, the hood hole has been arranged on the air distribution plate of plenum, the air intake of plenum side links to each other with air heater's air outlet, the bottom of plenum is provided with two at least ventilation pipes that communicate with the plenum, be provided with the blow valve on each ventilation pipe respectively, after the circulating fluidized bed boiler damps down, in time open the blow valve, make combustible gas in the plenum plenum of in time discharging, avoid combustible gas to gather in the plenum, the security performance of boiler equipment has been improved.
Description
Technical field
The utility model relates to heat power plant boiler field, particularly relates to a kind of circulating fluidized bed boiler banking fire explosion protection system.
Background technology
Technology of Circulating Fluidized Bed Boiler is the high-efficiency low-pollution clean burning branch art developed rapidly in recent ten years, and circulating fluidized bed boiler systems is made up of fluidized bed combustion chamber, circulating ash separator, cinder reinjection system, back-end surfaces and auxiliary equipment etc. usually.Circulating fluidized bed boiler systems is made up of combustion system and boiler circuit usually, and fuel completes combustion process in the combustion system of boiler, and is the heat energy of flue gas by burning converts chemical energy, with heating working medium; The function of boiler circuit is the heat being absorbed flue gas by heating surface, completes working medium and changes saturated vapor into by water, then change the process of superheated steam into.
After burning in circulating fluid bed boiler banking fire, especially after the banking fire of separating at high temperature returning charge fluidized-bed combustion boiler, the thin ash that one deck is thicker at furnace charge overburden, the fuel gas in furnace charge is prevented to discharge out of the furnace, fuel gas, through blast cap hole, accumulates in air compartment, when reaching explosion limit, air compartment and hot-flow flue produce deflagration phenomenon, cause significant impact safely to boiler plant.
Utility model content
The technical problem that the utility model solves is to provide a kind of circulating fluidized bed boiler banking fire explosion protection system.
The utility model solves the technical scheme that its technical problem adopts: circulating fluidized bed boiler banking fire explosion protection system, comprise circulating fluidized bed boiler, circulating fluidized bed boiler comprises burner hearth, the air inlet of upper furnace is connected with cyclone separator in turn, superheater, economizer, air preheater and air-introduced machine, the charging aperture of lower furnace portion is connected with feeder, the returning charge mouth of lower furnace portion is connected with material returning device, the bottom of material returning device is connected with overfire air fan, the top of material returning device is connected with the bottom of cyclone separator, the bottom of burner hearth is provided with air compartment, the air distribution plate of air compartment is furnished with blast cap hole, the air inlet of air compartment side is connected with the air outlet of air preheater, the bottom of air compartment is provided with at least two ventilation ducts be communicated with air compartment, each ventilation duct is respectively arranged with ventilation valve.
After CFBB banking fire, at the thin ash that overburden one deck of furnace charge is thicker, the fuel gas in furnace charge is prevented to discharge out of the furnace, fuel gas is through blast cap hole, accumulate in air compartment, open air compartment ventilation valve in time after banking fire, fuel gas in air compartment is discharged in time.
Further: described air preheater comprises the low-temperature air preheater, middle warm air preheater and the high-temperature air preheater that are connected successively
Further: described low-temperature air preheater is also connected with primary air fan.
The utility model beneficial effect is: after CFBB banking fire, timely unlatching ventilation valve, makes the fuel gas in air compartment discharge air compartment in time, avoids fuel gas to be collected in air compartment, safely significant impact is caused to boiler plant, improves the security performance of boiler plant.
Accompanying drawing explanation
Fig. 1 is circulating fluidized bed boiler banking fire explosion protection system schematic diagram;
Be labeled as in figure: burner hearth 1, air compartment 11, ventilation duct 12, ventilation valve 13, cyclone separator 2, superheater 3, economizer 4, air preheater 5, low-temperature air preheater 51, middle warm air preheater 5, high-temperature air preheater 53, air-introduced machine 6, feeder 7, material returning device 8, overfire air fan 9, primary air fan 10.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is illustrated further.
As shown in Figure 1, circulating fluidized bed boiler banking fire explosion protection system, comprise circulating fluidized bed boiler, circulating fluidized bed boiler comprises burner hearth 1, the air inlet on burner hearth 1 top is connected with cyclone separator 2 in turn, superheater 3, economizer 4, air preheater 5 and air-introduced machine 6, the charging aperture of lower furnace portion is connected with feeder 7, the returning charge mouth of lower furnace portion is connected with material returning device 8, the bottom of material returning device 8 is connected with overfire air fan 9, the top of material returning device 8 is connected with the bottom of cyclone separator 2, the bottom of burner hearth 1 is provided with air compartment 11, the air distribution plate of air compartment 11 is furnished with blast cap hole, the air inlet of air compartment side is connected with the air outlet of air preheater 5, the bottom of air compartment 11 is provided with at least two ventilation ducts be communicated with air compartment 12, each ventilation duct is respectively arranged with ventilation valve 13, after CFBB banking fire, open ventilation valve 13 in time, make the fuel gas in air compartment discharge air compartment 11 in time, avoid fuel gas to be collected in air compartment 11, safely significant impact is caused to boiler plant.
For making the heating effect of air preheater 5 better, described air preheater comprises the low-temperature air preheater 51, middle warm air preheater 52 and the high-temperature air preheater 53 that are connected successively, fully heats air.
For having sufficient air when ensureing boiler combustion, described low-temperature air preheater 51 is also connected with primary air fan 10.
After burning in circulating fluid bed boiler banking fire, the thin ash that one deck is thicker at furnace charge overburden, the fuel gas in furnace charge is prevented to discharge out of the furnace, fuel gas is through blast cap hole, accumulate in air compartment, when reaching explosion limit, air compartment and hot-flow flue produce deflagration phenomenon, cause significant impact safely to boiler plant; Ventilation valve in timely this circulating fluidized bed boiler of unlatching banking fire explosion protection system, makes the fuel gas in air compartment discharge air compartment in time, avoids fuel gas to be collected in air compartment, impact safely boiler plant, improve the security performance of boiler plant.
Above-described detailed description of the invention; the purpose of this utility model, technical scheme and beneficial effect are further described; be understood that; the foregoing is only detailed description of the invention of the present utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. circulating fluidized bed boiler banking fire explosion protection system, comprise circulating fluidized bed boiler, it is characterized in that: circulating fluidized bed boiler comprises burner hearth, the air inlet of upper furnace is connected with cyclone separator in turn, superheater, economizer, air preheater and air-introduced machine, the charging aperture of lower furnace portion is connected with feeder, the returning charge mouth of lower furnace portion is connected with material returning device, the bottom of material returning device is connected with overfire air fan, the top of material returning device is connected with the bottom of cyclone separator, the bottom of burner hearth is provided with air compartment, the air distribution plate of air compartment is furnished with blast cap hole, the air inlet of air compartment side is connected with the air outlet of air preheater, the bottom of air compartment is provided with at least two ventilation ducts be communicated with air compartment, each ventilation duct is respectively arranged with ventilation valve.
2. circulating fluidized bed boiler banking fire explosion protection system as claimed in claim 1, is characterized in that: described air preheater comprises the low-temperature air preheater, middle warm air preheater and the high-temperature air preheater that are connected successively.
3. circulating fluidized bed boiler banking fire explosion protection system as claimed in claim 2, is characterized in that: described low-temperature air preheater is also connected with primary air fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520679743.6U CN204986988U (en) | 2015-09-06 | 2015-09-06 | Bed boiler fuel detonation suppressant system that damps down is vulcanized in circulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520679743.6U CN204986988U (en) | 2015-09-06 | 2015-09-06 | Bed boiler fuel detonation suppressant system that damps down is vulcanized in circulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204986988U true CN204986988U (en) | 2016-01-20 |
Family
ID=55121355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520679743.6U Expired - Fee Related CN204986988U (en) | 2015-09-06 | 2015-09-06 | Bed boiler fuel detonation suppressant system that damps down is vulcanized in circulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204986988U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402845A (en) * | 2016-10-28 | 2017-02-15 | 杭州红山热电有限公司 | Boiler burning system |
| CN106439800A (en) * | 2016-10-28 | 2017-02-22 | 杭州红山热电有限公司 | Boiler combustion returning device and boiler combustion system with same |
| CN112797403A (en) * | 2021-02-04 | 2021-05-14 | 清华大学 | An explosion-proof system for a fluidized bed air chamber and an explosion-proof method when the pressure fire is restarted |
-
2015
- 2015-09-06 CN CN201520679743.6U patent/CN204986988U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402845A (en) * | 2016-10-28 | 2017-02-15 | 杭州红山热电有限公司 | Boiler burning system |
| CN106439800A (en) * | 2016-10-28 | 2017-02-22 | 杭州红山热电有限公司 | Boiler combustion returning device and boiler combustion system with same |
| CN112797403A (en) * | 2021-02-04 | 2021-05-14 | 清华大学 | An explosion-proof system for a fluidized bed air chamber and an explosion-proof method when the pressure fire is restarted |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20200906 |