CN201680717U - Circulating fluid bed boiler for stone coal decarburization - Google Patents
Circulating fluid bed boiler for stone coal decarburization Download PDFInfo
- Publication number
- CN201680717U CN201680717U CN2010201573239U CN201020157323U CN201680717U CN 201680717 U CN201680717 U CN 201680717U CN 2010201573239 U CN2010201573239 U CN 2010201573239U CN 201020157323 U CN201020157323 U CN 201020157323U CN 201680717 U CN201680717 U CN 201680717U
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- Prior art keywords
- coal
- air
- decarburization
- stone coal
- bed
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Abstract
The utility model discloses a circulating fluid bed boiler for stone coal decarburization, which comprises a feeder, a furnace wall, a fan, an air pipe, a main combustion bed, a main combustion chamber, a secondary combustion bed, a secondary combustion chamber, air distribution devices, water-cooled walls, boiler shells, tail flues, coal economizers and air preheaters, wherein the air distribution devices, the water-cooled walls, the boiler shells, the tail flues, the coal economizers and the air preheaters are respectively arranged under the main combustion and the secondary combustion bed; and a plurality of coal gas burners are arranged on air distribution plates of the two air distribution devices. The circulating fluid bed boiler has a further improvement that a plurality of coal gas burners are also arranged at the top part of the main combustion chamber. The utility model can ensure smooth combustion and completely satisfy the demands of stone coal decarburization.
Description
Technical field
The utility model relates to a kind of CFBB that is used for stone coal decarbonization.
Background technology
China's bone coal ore reserves is abundant, in Zhejiang, Wan Nan, southwest, Jiangxi, E Dong, Hunan be to Gui Dongbei, containing a bone coal association navajoite that is about more than 1,600 kilometer, its v
2O
5Reserves about more than 100,000,000 tons.In the process for extracting vanadium from stone coal flow process, at first need the carbon in the bone coal is removed.The effective method of present technical removal carbon is the burning carbon rejection processes, carbon element content is generally 8-12% in the bone coal, calorific value is generally 800-1300kcal/kg, the calorific value that has even low to 300kcal/kg, and technological requirement decarburization temperature is advisable at 700-800 ℃, the highest can not be above 900 ℃, and the structure of present widely used fluidized-bed combustion boiler all is to design under the coal higher with calorific value is made the condition of fuel, as adopt bone coal to do carrying out smoothly that fuel is difficult to guarantee to burn, can't be applicable to low calorie fuels such as bone coal.
The utility model content
The purpose of this utility model is the above-mentioned deficiency at prior art, and a kind of CFBB that is used for stone coal decarbonization is provided, and what it can guarantee to burn carries out smoothly.
For achieving the above object, the CFBB that is used for stone coal decarbonization of the present utility model, comprise feed appliance, furnace wall, blower fan, airduct, main burning bed, main chamber, secondary burning bed, subsidiary combustion chamber, be located at air-distribution device, water-cooling wall, drum, back-end ductwork, economizer, air preheater under main burning bed and the secondary burning bed respectively, it is characterized in that on the air distribution plate of two cover air-distribution devices, being equipped with several gas burners.
The utility model is not all arranged heating surface at main burning bed and secondary burning bed, and on air distribution plate cancellation part blast cap and set up several gas burners, owing to adopt the mode of adiabatic combustion, gas burner both can guarantee the safe combustion of whole burner hearth coal gas, can play igniting and combustion-supporting effect when boiler startup and bone coal calorific value are very low again, that guarantees to burn carries out smoothly;
As further improvement of the utility model, the top of described main chamber also is provided with several gas burners; When temperature in the main chamber is low, can start gas burner and carry out afterburning, guarantee the temperature that decarburizing reaction is required;
In sum, the utility model can be guaranteed the needs that carry out, satisfy fully stone coal decarbonization smoothly that burn.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
By shown in Figure 1, this is used for the CFBB of stone coal decarbonization, comprise feed appliance 1, furnace wall 2, blower fan 3, airduct 4, main burning bed 5, main chamber 6, middle flue 7, secondary burning bed 8, subsidiary combustion chamber 9, be located at air-distribution device 10,11, water-cooling wall (not shown), upper drum 12, lower drum 13, back-end ductwork 14, economizer 15, air preheater 16 under main burning bed 5 and the secondary burning bed 8 respectively, be equipped with several gas burners 18 on the air distribution plate of two cover air-distribution devices 10,11, the top of main chamber 6 also is provided with several gas burners 19;
This CFBB is not all arranged heating surface at main burning bed 5 and secondary burning bed 8, owing to adopt the mode of adiabatic combustion, gas burner 18,19 both can guarantee the safe combustion of whole burner hearth coal gas, can play igniting and combustion-supporting effect when boiler startup and bone coal calorific value are very low again, that guarantees to burn carries out smoothly.
The utility model is not limited to above-mentioned embodiment, and as required, middle flue 7 also can be cancelled; But, all fall into protection domain of the present utility model as long as adopt the described technical scheme of claim 1.
Claims (2)
1. CFBB that is used for stone coal decarbonization, comprise feed appliance, furnace wall, blower fan, airduct, main burning bed, main chamber, secondary burning bed, subsidiary combustion chamber, be located at air-distribution device, water-cooling wall, drum, back-end ductwork, economizer, air preheater under main burning bed and the secondary burning bed respectively, it is characterized in that on the air distribution plate of two cover air-distribution devices, being equipped with several gas burners.
2. the CFBB that is used for stone coal decarbonization as claimed in claim 1 is characterized in that the top of described main chamber also is provided with several gas burners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201573239U CN201680717U (en) | 2010-04-13 | 2010-04-13 | Circulating fluid bed boiler for stone coal decarburization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201573239U CN201680717U (en) | 2010-04-13 | 2010-04-13 | Circulating fluid bed boiler for stone coal decarburization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201680717U true CN201680717U (en) | 2010-12-22 |
Family
ID=43345758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201573239U Expired - Lifetime CN201680717U (en) | 2010-04-13 | 2010-04-13 | Circulating fluid bed boiler for stone coal decarburization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201680717U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252522A (en) * | 2011-07-08 | 2011-11-23 | 江苏四方锅炉有限公司 | Energy-saving boiler special for combustion test stand |
| CN102628098A (en) * | 2012-04-25 | 2012-08-08 | 彭武星 | Boiler with decarbonization and roasting processes for refining vanadium pentoxide |
| CN103264996A (en) * | 2013-04-28 | 2013-08-28 | 中国华能集团清洁能源技术研究院有限公司 | Circulating fluidized bed boiler system for extraction of selenium from bone coal |
| CN107490005A (en) * | 2017-09-13 | 2017-12-19 | 北京热华能源科技有限公司 | A kind of CFBB |
-
2010
- 2010-04-13 CN CN2010201573239U patent/CN201680717U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252522A (en) * | 2011-07-08 | 2011-11-23 | 江苏四方锅炉有限公司 | Energy-saving boiler special for combustion test stand |
| CN102628098A (en) * | 2012-04-25 | 2012-08-08 | 彭武星 | Boiler with decarbonization and roasting processes for refining vanadium pentoxide |
| CN103264996A (en) * | 2013-04-28 | 2013-08-28 | 中国华能集团清洁能源技术研究院有限公司 | Circulating fluidized bed boiler system for extraction of selenium from bone coal |
| CN103264996B (en) * | 2013-04-28 | 2014-10-29 | 中国华能集团清洁能源技术研究院有限公司 | Circulating fluidized bed boiler system for extraction of selenium from bone coal |
| CN107490005A (en) * | 2017-09-13 | 2017-12-19 | 北京热华能源科技有限公司 | A kind of CFBB |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101222 |
|
| CX01 | Expiry of patent term |