CN202868673U - Novel circulating fluidized bed boiler - Google Patents
Novel circulating fluidized bed boiler Download PDFInfo
- Publication number
- CN202868673U CN202868673U CN 201220391067 CN201220391067U CN202868673U CN 202868673 U CN202868673 U CN 202868673U CN 201220391067 CN201220391067 CN 201220391067 CN 201220391067 U CN201220391067 U CN 201220391067U CN 202868673 U CN202868673 U CN 202868673U
- Authority
- CN
- China
- Prior art keywords
- heating surface
- bed boiler
- fluidized bed
- circulating fluidized
- burner hearth
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model relates to a circulating fluidized bed boiler. The circulating fluidized bed boiler comprises a hearth, a cyclone separator, an ageing heating surface, a tail shaft, a smoke outlet, an air distributing plate and a slag discharging pipe and the like, wherein the ageing heating surface is mainly arranged outside the hearth; and no water cooling wall is formed in the hearth. By adopting the circulating fluidized bed boiler provided by the utility model, the heating surface in a fluidized bed area is reduced in order to form a high-temperature area required for combustion, the heating surface is increased in other areas, and therefore greater combustion is brought to coal gangue or high-quality coil with the heating value over 850 kilocalories per kg, and sufficient heat can be generated as well.
Description
Technical field
The utility model relates to a kind of CFBB.
Background technology
Fluid bed is a kind of novel combustion apparatus that grows up nearly decades, and it adopts the fluidized combustion technology to produce steam, high-temperature flue gas, high temperature air.Can be widely used in the industries such as generating, papermaking, building materials, chemical industry, smelting.At present, in coal in China exploitation and washing process, will produce a large amount of gangues every year, wherein only regarded fuel utilization, remaining abandoned of gangue less than 15% gangue more.Why utilization rate is low for gangue, its reason is that gangue is a kind of low heat value, high-ash inferior fuel, have now many researchs all are to be how to take full advantage of coal gangue fuel to realize heat exchange, adopt at present CFBB to can be good at addressing this problem, but for the excessively low gangue of calorific value, such as the following gangue of 1500 kilocalorie/kilograms, adopt common CFBB also to have problems.Also there are some scholar's research to go out the pure circulating fluidized bed boiler device that uses low heating value coal gangue, but also can only adapt to the above gangue of 1000 kilocalorie/kilograms, helpless for the gangue that 1000 kilocalorie/kilograms are following.
The utility model content
The utility model provides a kind of novel CFBB, adopts CFBB of the present utility model, can the low-calorie gangue of efficient burning, and the calorific value excursion is at 850 kilocalories/more than the kilogram.
The utility model is to adopt following technical scheme to realize:
A kind of circulating fluid bed boiler comprises burner hearth, cyclone separator, evaporates heating surface, tail vertical well, exhanst gas outlet, air distribution plate and scum pipe etc., wherein evaporates heating surface mainly to be installed in outside the burner hearth, and do not have water-cooling wall in burner hearth.
Above-mentioned circulating fluid bed boiler wherein evaporates heating surface and is installed in the tail vertical well.
Above-mentioned circulating fluid bed boiler is wherein installed disturbing flow device in the burner hearth.
Adopt CFBB of the present utility model, have the following advantages:
1, by evaporating heating surface is optimized, reduces heating surface in fluidised bed zones, form the needed high-temperature region of burning, and increase heating surface in other position, to satisfy the requirement of stove thermic load.
2, form eddy current in bed, make the horizontal mixing of bed material and caloic exchange better, it is more abundant to burn, and is conducive to the after-flame of low heating value coal gangue.
3, thermal value range can both well be burnt and produces enough heats at the gangue of 850 kilocalories/more than the kilogram or fat coal.
Description of drawings
1, Fig. 1 is the structural representation of New Cycle fluid bed in the circulating fluid bed boiler described in the utility model.
2, Fig. 2 is the structural representation of existing recirculating fluidized bed in the New Cycle Fluidized Bed Boiler described in the utility model.
The specific embodiment
Embodiment 1: a kind of XF-SI type CFBB of pure burned coal gangue
Transformation comprises burner hearth 1 with CFBB as shown in Figure 2, tail vertical well 2, and circulation canal 3 evaporates heating surface 4, water-cooling wall 5 and air distribution plate.
At burner hearth 1 interior dismounting water-cooling wall, as shown in Figure 1, other structures are constant.
This stove is not arranged water wall surface in burner hearth 1.After gangue is sent into burner hearth, adopt Charcoal ignition.Owing to there is not water-cooling wall heat absorption, liberated heat is used for promoting the temperature of stove body, flue gas and lime-ash after the gangue burning, and constantly heats the follow-up gangue that enters stove.Promote fire box temperature and can reach 950～1000 ℃, thereby high ash content, high-moisture, low-calorie gangue can fully be burnt.These high-temperature flue gas and carry a part of grit secretly and flow into the burner hearth rear portion by the economizer surface absorbing heat of convection tube heating surface and afterbody, are produced steam.After gangue enters the stove burning, its liberated heat about 12% consumes in cinder heat loss, about 14% heat consumes in heat loss due to exhaust gas, solid-unburning hot loss about 15%, the imperfect combustion heat waste of gas fails to keep an appointment 0.5%, radiation loss is about 2.5%, and the available heat utilization rate is about 56%, namely sends into 1000kg, calorific capacity in the stove and is the gangue of 850 kilocalories and can produce pressure 1.27Mp
a, 194 ℃ of temperature steam 740kg.
The characteristics of this stove: compare with the boiler that burns fat coal, burner hearth does not have water wall surface, and convection tube heating surface layout is more, is about 25～32m
2/ ton vapour, economizer surface is about 23～28m
2/ ton vapour can reach the nominal output of design to guarantee this stove when burning low heating value coal gangue.
Claims (3)
1. circulating fluid bed boiler comprises burner hearth, cyclone separator, evaporates heating surface, tail vertical well, exhanst gas outlet, air distribution plate and scum pipe, it is characterized in that evaporating heating surface and all is installed in outside the burner hearth, and do not have water-cooling wall in burner hearth.
2. circulating fluid bed boiler as claimed in claim 1 is characterized in that evaporating heating surface and is installed in the tail vertical well.
3. circulating fluid bed boiler as claimed in claim 1 is characterized in that being equipped with disturbing flow device in burner hearth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220391067 CN202868673U (en) | 2012-08-08 | 2012-08-08 | Novel circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220391067 CN202868673U (en) | 2012-08-08 | 2012-08-08 | Novel circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202868673U true CN202868673U (en) | 2013-04-10 |
Family
ID=48035387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220391067 Expired - Fee Related CN202868673U (en) | 2012-08-08 | 2012-08-08 | Novel circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202868673U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818261A (en) * | 2012-08-08 | 2012-12-12 | 湖南乾能新能源科技开发有限公司 | Novel circulating fluidized bed boiler |
-
2012
- 2012-08-08 CN CN 201220391067 patent/CN202868673U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818261A (en) * | 2012-08-08 | 2012-12-12 | 湖南乾能新能源科技开发有限公司 | Novel circulating fluidized bed boiler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101586799B (en) | Moderate temperature moderate voltage steam boiler capable of burning down the blast furnace gas | |
| CN203517771U (en) | Middle-temperature separating circulating fluidized bed boiler applicable to combusting high-sodium coal | |
| CN202141027U (en) | Environment-friendly energy-saving biomass hot pipe boiler | |
| CN202382230U (en) | Fluid bed furnace | |
| CN105509031A (en) | Combusting and heating boiler for biomass fuel | |
| CN205909261U (en) | Biomass circulating fluid bed boiler based on flow state reconsitution | |
| CN210004379U (en) | circulating fluidized bed boiler suitable for burning stone coal with extremely low calorific value | |
| CN205245144U (en) | Biomass fuel heating boiler that burns | |
| CN202692032U (en) | Fluidized bed boiler using coal gangue combustion | |
| CN202868673U (en) | Novel circulating fluidized bed boiler | |
| CN201670735U (en) | Efficient heat-recovering decarburization roasting boiler with low calorific value | |
| CN102818261A (en) | Novel circulating fluidized bed boiler | |
| CN102913899B (en) | Recirculating fluidized bed steam, organic heat carrier, hot-air Three-in-one | |
| CN104595894A (en) | System and method for solving high-sodium coal combustion contamination by low-wall-temperature heat exchange surface | |
| CN107606609A (en) | A kind of CFBB of lower heat of combustion high-ash fuel | |
| CN104100967A (en) | Decarburization method of coal gangue and circulating fluidized bed mineral separating boiler | |
| CN102889585A (en) | Environment-friendly energy-saving vertical boiling boiler | |
| CN205640887U (en) | Sediment waste heat utilization's air -cooled system at bottom of improvement circulating fluidized bed boiler | |
| CN207486791U (en) | A kind of circulating fluidized bed boiler of lower heat of combustion high-ash fuel | |
| CN204986988U (en) | Bed boiler fuel detonation suppressant system that damps down is vulcanized in circulation | |
| CN208794381U (en) | 350MW Supercritical CFB Boiler with Poly-generation | |
| CN103013573A (en) | System for supplying high temperature air for fluidized bed coal gasification furnace | |
| CN102954463B (en) | A kind of fluidized-bed combustion boiler adopting coal gangue combustion | |
| CN207316897U (en) | A kind of double grate opposed type biomass boiler | |
| CN202065978U (en) | Boiler utilizing waste heat in tail smoke gas of steel rolling heating furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wu Weiheng Inventor after: Luo Dajun Inventor before: Wu Weiheng Inventor before: Luo Dajun |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20150808 |
|
| EXPY | Termination of patent right or utility model |