CN201335404Y - Igniting device of circulating fluid bed boiler - Google Patents
Igniting device of circulating fluid bed boiler Download PDFInfo
- Publication number
- CN201335404Y CN201335404Y CNU2009201438041U CN200920143804U CN201335404Y CN 201335404 Y CN201335404 Y CN 201335404Y CN U2009201438041 U CNU2009201438041 U CN U2009201438041U CN 200920143804 U CN200920143804 U CN 200920143804U CN 201335404 Y CN201335404 Y CN 201335404Y
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- China
- Prior art keywords
- cfbb
- boiler
- fluid bed
- circulating fluid
- conveying device
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- Expired - Lifetime
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model relates to an igniting device of a circulating fluid bed boiler, which comprises circulating fluid bed boilers, cyclone separators and return feeders mounted below the cyclone separators. The igniting device is characterized in that one end of an iron oxide slag delivery device is connected with a deslagging pipe and a discharge port of the return feeder through two branch pipes and the other end thereof is connected with a deslagging pipe and a discharge port of the return feeder on the adjacent circulating fluid bed boiler; and the pipes at the two ends of the iron oxide slag delivery device are provided with valves respectively. Since the two adjacent circulating fluid bed boilers are connected through the iron oxide slag delivery device, when either of the boilers is ignited after maintenance, the high-temperature iron oxide slag (800 DEG C to 900 DEG C) in the other boiler is utilized to start the boiler, thereby greatly saving fuel. The igniting device has the advantages of simple structure and easy operation, and can effectively reduce the starting cost after maintenance of the boiler.
Description
Affiliated technical field
The utility model relates to a kind of CFBB point furnace apparatus.
Background technology
It is ripe that present large-size circulating fluidized bed technology has been tending towards, is mainly used in coal-fired thermal power generation.The basic procedure of CFBB is: after coal and desulfurizing agent are sent into burner hearth, surrounded by a large amount of inertia high-temperature materials rapidly, fire burns, carry out desulphurization reaction simultaneously, and under the effect of rising flue gas stream, move to upper furnace, to other heating surface heat releases of arranging in water-cooling wall and the stove.Oversize grain enters the back, zone that suspends and depart from primary air under gravity and external force effect, thereby adherent dirty.Gas-solid mixture enters high temperature cyclone separator after leaving burner hearth, and a large amount of solid particles as coal grain, the desulfurizing agent loopback burner hearth that is separated, carry out circulating combustion.The fine particle that is not separated enters back-end ductwork with flue gas, with heating superheater, economizer and air preheater, drains into atmosphere through deduster.Because CFBB is under the high velocity air state, carries out work, so just causes serious wear, need frequent shutdown maintenance.After each maintenance, all need a large amount of fuel oils the solid material in the boiler to be heated at the boiler startup initial stage, after the safety that makes the temperature of solid material can reach coal uses temperature, could throw coal and carry out operate as normal, how reducing the payment for initiation usefulness of maintenance back CFBB, is the target that each CFBB uses enterprise to pursue.
Summary of the invention
The utility model is with the isolated high temperature combustible of adjacent circulation fluidized-bed combustion boiler cyclone separator, introduces in the CFBB after overhauling, and this boiler is carried out the CFBB point furnace apparatus of heating starting.
For achieving the above object, the technical solution of the utility model is: a kind of CFBB point furnace apparatus, comprise CFBB, cyclone separator, standpipe and be installed in material returning device under the cyclone separator, an end that it is characterized in that red slag conveying device links to each other with discharging opening with the scum pipe of material returning device respectively by two bye-passes, the scum pipe of the material returning device on the other end and the adjacent CFBB links to each other with discharging opening, is separately installed with valve on the pipeline at red slag conveying device two ends.
Above-mentioned red slag conveying device is a Pneumatic conveyer.
Above-mentioned red slag conveying device is scraping plate conveying device or bucket type conveying device.
Device of the present utility model is between two CFBBs, by red slag conveying device two boilers are connected, when lighting a fire behind boiler maintenance so therein, can utilize the red slag of 800-900 ℃ of high temperature of another boiler, boiler after the maintenance is carried out heating starting, need not to use fuel oil to heat, saved a large amount of fuel oils.As overhauling 12 times in 470 tons CFBB year, when lighting a fire at every turn, generally need the light diesel more than 20 tons to carry out heating starting, and after adopting this device, just can save this part expense, about 1,200,000 yuan of year saving diesel oil expenses.It is simple in structure, easy to use that this device has, and can effectively reduce the start-up cost behind the boiler maintenance.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model.
The specific embodiment
As shown in Figure 1, the left side is the I CFBB, and the right side is the II CFBB.Every CFBB comprises cyclone separator 1, standpipe 2 and is installed in material returning device 5 under the cyclone separator.Be connected with red slag conveying device on the scum pipe 6 of two boiler material returning devices, 5 lower ends, this device is separately installed with valve for Pneumatic conveyer between this Pneumatic conveyer and the scum pipe 6.On the discharging opening 4 that material returning device and boiler are connected, be connected with respectively with the power conveying device together with bye-pass, on this bye-pass, be separately installed with valve.
When needing ignition trigger after the maintenance of I CFBB, valve I 7, valve III11 are closed, valve II 8 and valve IV12 open, this moment, the red slag of high temperature of II CFBB just passed through valve IV12, pneumatic carrier 10, bye-pass and the valve II8 on it, enter the discharging opening 4 of I CFBB material returning device, be inhaled in the burner hearth 3 then, boiler is heated.After the I CFBB reaches start-up temperature, valve-off II 8 and valve IV12, the I CFBB is thrown coal and is normally moved.
When needing ignition trigger after the maintenance of II CFBB, valve I 7, valve III11 are opened, valve II8 and valve IV12 close, and the red slag of high temperature is transported in the II CFBB by the I CFBB.
Above-mentioned Pneumatic conveyer comprises pneumatic carrier 10 and is installed in the high-pressure air hose 9 at pneumatic carrier two ends.The high-pressure blast of high-pressure air hose can utilize the wind regime in the steam generator system, as once or the secondary wind regime.
Red slag conveying device also can be utilized existing scraping plate conveying device or bucket type conveying device, its objective is the red slag of high temperature is carried between two boilers.
Claims (3)
1, a kind of CFBB point furnace apparatus, comprise CFBB, cyclone separator, standpipe and be installed in material returning device under the cyclone separator, an end that it is characterized in that red slag conveying device links to each other with discharging opening (4) with the scum pipe (6) of material returning device respectively by two bye-passes, the scum pipe of the material returning device on the other end and the adjacent CFBB links to each other with discharging opening, is separately installed with valve on the pipeline at red slag conveying device two ends.
2, CFBB point furnace apparatus according to claim 1 is characterized in that above-mentioned red slag conveying device is a Pneumatic conveyer.
3, CFBB point furnace apparatus according to claim 1 is characterized in that above-mentioned red slag conveying device is scraping plate conveying device or bucket type conveying device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201438041U CN201335404Y (en) | 2009-01-14 | 2009-01-14 | Igniting device of circulating fluid bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201438041U CN201335404Y (en) | 2009-01-14 | 2009-01-14 | Igniting device of circulating fluid bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201335404Y true CN201335404Y (en) | 2009-10-28 |
Family
ID=41287058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201438041U Expired - Lifetime CN201335404Y (en) | 2009-01-14 | 2009-01-14 | Igniting device of circulating fluid bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201335404Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276575A (en) * | 2014-06-12 | 2016-01-27 | 国网山西省电力公司电力科学研究院 | Boiler heating system |
| CN105674256A (en) * | 2015-11-29 | 2016-06-15 | 集美大学 | Quick-start system and method for circulating fluidized bed boilers |
| CN106958811A (en) * | 2017-05-16 | 2017-07-18 | 中国华能集团清洁能源技术研究院有限公司 | A kind of method and system using this stove of adjacent stove Hot-blast Heating |
| CN114060802A (en) * | 2021-11-19 | 2022-02-18 | 无锡华光环保能源集团股份有限公司 | High-pressure air plugging method for processing material return interruption of circulating fluidized bed boiler |
-
2009
- 2009-01-14 CN CNU2009201438041U patent/CN201335404Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276575A (en) * | 2014-06-12 | 2016-01-27 | 国网山西省电力公司电力科学研究院 | Boiler heating system |
| CN105674256A (en) * | 2015-11-29 | 2016-06-15 | 集美大学 | Quick-start system and method for circulating fluidized bed boilers |
| CN105674256B (en) * | 2015-11-29 | 2019-09-27 | 桂林航天工业学院 | Circulating fluidized bed boiler quick start system and method |
| CN106958811A (en) * | 2017-05-16 | 2017-07-18 | 中国华能集团清洁能源技术研究院有限公司 | A kind of method and system using this stove of adjacent stove Hot-blast Heating |
| CN114060802A (en) * | 2021-11-19 | 2022-02-18 | 无锡华光环保能源集团股份有限公司 | High-pressure air plugging method for processing material return interruption of circulating fluidized bed boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091028 Effective date of abandoning: 20090114 |