CN204806376U - CFB boiler limestone flour feed system - Google Patents
CFB boiler limestone flour feed system Download PDFInfo
- Publication number
- CN204806376U CN204806376U CN201520051560.XU CN201520051560U CN204806376U CN 204806376 U CN204806376 U CN 204806376U CN 201520051560 U CN201520051560 U CN 201520051560U CN 204806376 U CN204806376 U CN 204806376U
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- China
- Prior art keywords
- blender
- cfb boiler
- blow
- feed bin
- road
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- Expired - Fee Related
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Abstract
The utility model discloses a CFB boiler limestone flour feed system, including the limestone flour storehouse that loops through defeated powder tube coupling, receive the feed bin, give feed bin, blender and furnace, be provided with rotatory measurement batcher for the feed bin lower part, CFB boiler furnace afterbody flue is provided with SO2 flue gas on line analyzer, wired contact between the motor of SO2 flue gas on line analyzer and rotatory measurement batcher. High -pressure forced draught blower is all connected through the supply air duct simultaneously to limestone flour storehouse, receipts feed bin and blender front end, defeated tube cell between blender and the furnace is installed in proper order on the road and is blown stifled pipeline one end and go into the stove pneumatic valve, blow the stifled pipeline other end and connect high -pressure forced draught blower, blow to be provided with on the stifled pipeline and blow stifled valve. This patent overall structure is simple reliable, design benefit, and it is accurate to throw the material to having and preventing stopping up the function, the transformation of can upgrading on the existing equipment basis is favorable to using widely.
Description
Technical field
The utility model relates to a kind of charging gear, especially a kind of simple and reliable for structure, design the effective CFB boiler agstone feeding system of ingenious, intelligent feed, anti-clogging.
Background technology
CFB boiler, i.e. CFBB are the one of coal-burning boiler, and it needs to add agstone in combustion and is beneficial to desulfuration in furnace.
The agstone feed system of existing CFB boiler, its charging rate is constant, can not according to SO in the combustion case of boiler and stove
2concentration regulates inlet amount automatically, and desulfurized effect has much room for improvement; And the duff pipe appearance of a street easily blocks, need human at periodic intervals to clear up, waste time and energy.
Summary of the invention
For solving the problem, the utility model provides a kind of CFB boiler agstone feeding system, comprise connected by duff pipe road successively limestone powder bin, rewinding storehouse, feed hopper, blender and burner hearth;
Described feed hopper bottom is provided with rotary metering batcher;
Described CFB boiler furnace back-end ductwork is provided with SO
2flue gas on-line analysis instrument;
Described SO
2wired communication between motor on flue gas on-line analysis instrument and rotary metering batcher.
Described limestone powder bin, rewinding storehouse are connected high pressure blower by air supply duct with blender front end all simultaneously;
The described air supply duct adjacent with high pressure blower is disposed with check-valves and hand stop valve; The described air supply duct adjacent with feed hopper with rewinding storehouse is respectively arranged with rewinding storehouse balanced valve and feed hopper balanced valve; Duff pipe road between described limestone powder bin and rewinding storehouse is disposed with manually gate valve and rewinding storehouse charging dome valve; Duff pipe road between described rewinding storehouse and feed hopper is provided with feed hopper charging dome valve;
Duff pipe road between described blender and burner hearth is provided with successively and blows one end, plugging road and enter stove pneumatic operated valve, described in blow the plugging road other end and connect high pressure blower, described in blow plugging road is provided with and blow stifled valve.
A kind of CFB boiler agstone feeding system described in this patent, agstone flows through rewinding storehouse, feed hopper successively through limestone powder bin under the effect of high pressure blower, rotary metering batcher continuous uniform feed through feed hopper bottom is transported to after blender fully mixes, finally flow into burner hearth, through calcining and decomposing, react with the sulfur dioxide in burner hearth and realize sulfur fixation, the SO that burner hearth back-end ductwork is arranged
2sO in flue gas on-line analysis instrument real-time monitoring hearth
2content, and the rotating speed controlling the motor on rotary metering batcher in real time, realize the accurate adjustment of agstone conveying capacity, the agstone amount matched during to reach desulphurization during combustion; When blockage appears in blender rear portion pipeline, can open and blow stifled valve, the agstone of blocking is dispelled.
This patent overall structure is simple and reliable, designs ingenious, feeds intake accurately, and has anti-blockage function, can carry out upgrading, be conducive to promoting the use of on existing equipment basis.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with embodiment, this patent is described further:
As shown in Figure 1, a kind of CFB boiler agstone feeding system, comprise connected by duff pipe road 15 successively limestone powder bin 6, rewinding storehouse 9, feed hopper 11, blender 13 and burner hearth 18;
Described feed hopper 11 bottom is provided with rotary metering batcher 12;
SO is provided with in described burner hearth 18 back-end ductwork
2flue gas on-line analysis instrument 17;
Described SO
2wired communication between motor on flue gas on-line analysis instrument 17 and rotary metering batcher 12.
Described limestone powder bin 6, rewinding storehouse 9 are connected high pressure blower 1 by air supply duct 20 with blender 13 front end all simultaneously;
The described air supply duct 20 adjacent with high pressure blower 1 is disposed with check-valves 2 and hand stop valve 3; The described air supply duct 20 adjacent with feed hopper 11 with rewinding storehouse 9 is respectively arranged with rewinding storehouse balanced valve 5 and feed hopper balanced valve 4; Duff pipe road 15 between described limestone powder bin 6 and rewinding storehouse 9 is disposed with manually gate valve 7 and rewinding storehouse charging dome valve 8; Duff pipe road 15 between described rewinding storehouse 9 and feed hopper 11 is provided with feed hopper charging dome valve 10;
Duff pipe road 15 between described blender 13 and burner hearth 18 is provided with successively and blows one end, plugging road 19 and enter stove pneumatic operated valve 16, described in blow plugging road 19 other end and connect high pressure blower 1, described in blow plugging road 19 is provided with and blow stifled valve 14.
A kind of CFB boiler agstone feeding system described in this patent, agstone flows through rewinding storehouse 9, feed hopper 11 successively through limestone powder bin 6 under the effect of high pressure blower 1, rotary metering batcher 12 continuous uniform feed through feed hopper bottom is transported to after blender 13 fully mixes, finally flow into burner hearth 18, through calcining and decomposing, react with the sulfur dioxide in burner hearth 18 and realize sulfur fixation, the SO that burner hearth 18 back-end ductwork is arranged
2flue gas on-line analysis instrument 17 real-time monitoring hearth 18 exports SO
2content, and the rotating speed controlling the motor on rotary metering batcher 12 in real time, realize the accurate adjustment of agstone conveying capacity, the agstone amount matched during to reach desulphurization during combustion; When blockage appears in blender 13 rear portion pipeline, can open and blow stifled valve 14, the agstone of blocking is dispelled.
Embodiment recited above is only be described preferred embodiment of the present utility model; not protection domain of the present utility model is limited; do not departing under the utility model designs spiritual prerequisite; the various distortion that the common engineers and technicians in this area make technical solutions of the utility model and improvement, all should fall in protection domain that claims of the present utility model determine.
Claims (3)
1. a CFB boiler agstone feeding system, comprise connected by duff pipe road successively limestone powder bin, rewinding storehouse, feed hopper, blender and burner hearth; It is characterized in that, described feed hopper bottom is provided with rotary metering batcher; Described CFB boiler furnace back-end ductwork is provided with SO
2flue gas on-line analysis instrument.
2. a kind of CFB boiler agstone feeding system according to claim 1, it is characterized in that, described limestone powder bin, rewinding storehouse are connected high pressure blower by air supply duct with blender front end all simultaneously.
3. a kind of CFB boiler agstone feeding system according to claim 1, it is characterized in that, duff pipe road between described blender and burner hearth is provided with successively and blows one end, plugging road and enter stove pneumatic operated valve, the described plugging road other end of blowing connects high pressure blower, described in blow plugging road is provided with and blow stifled valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520051560.XU CN204806376U (en) | 2015-01-26 | 2015-01-26 | CFB boiler limestone flour feed system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520051560.XU CN204806376U (en) | 2015-01-26 | 2015-01-26 | CFB boiler limestone flour feed system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204806376U true CN204806376U (en) | 2015-11-25 |
Family
ID=54591194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520051560.XU Expired - Fee Related CN204806376U (en) | 2015-01-26 | 2015-01-26 | CFB boiler limestone flour feed system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204806376U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317509A (en) * | 2018-03-15 | 2018-07-24 | 中国石油化工股份有限公司洛阳分公司工会委员会 | A kind of circulating fluidized bed boiler agstone feeding system |
| CN109603453A (en) * | 2018-12-24 | 2019-04-12 | 国家能源投资集团有限责任公司 | The control method of lime stone inventory in circulating fluidized bed boiler |
| CN110371705A (en) * | 2019-09-02 | 2019-10-25 | 刘金江 | A kind of lime stone flouring technology oscillating feeder |
-
2015
- 2015-01-26 CN CN201520051560.XU patent/CN204806376U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317509A (en) * | 2018-03-15 | 2018-07-24 | 中国石油化工股份有限公司洛阳分公司工会委员会 | A kind of circulating fluidized bed boiler agstone feeding system |
| CN109603453A (en) * | 2018-12-24 | 2019-04-12 | 国家能源投资集团有限责任公司 | The control method of lime stone inventory in circulating fluidized bed boiler |
| CN109603453B (en) * | 2018-12-24 | 2021-07-16 | 国家能源投资集团有限责任公司 | Method for controlling limestone feeding amount in circulating fluidized bed boiler |
| CN110371705A (en) * | 2019-09-02 | 2019-10-25 | 刘金江 | A kind of lime stone flouring technology oscillating feeder |
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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 |
Granted publication date: 20151125 Termination date: 20170126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |