CFB Boiler Power Plant and Turbine Set / Coal Fired Steam Boiler
Specifications
CFB boiler power plant and turbine set1.High efficiency power generation;
2.Scientific design;
3.90% percent so2 reduction
CFB boiler power plant and turbine set
I.Boiler parameter:
Rated evaporation capacity 30t/h
Rated steam pressure 2.5MPa
Rated steam temperature 400°C
Feed-water temperature 105°C
Exhaust gas temperature ~ 155°C
Boiler design efficiency ~ 87%
II. Design fuel
Coal type: coal fuel, as received basis net calorific power is above 12.6MJ/Kg.
Granularity requirement: particle size 0-13mm
Limestone granularity requirement: particle size 0-2mm
III.Boiler advantages:
- Broad Fuel Adaptability: CFB makes the newly sent coal particles and the already burt coal particles mixed up sufficiently, so the newly sent coal particles are rapidly heated to ignition temperature and burn. As a result, all kinds of coal can be burnt steadily and efficiently.
- High Combustion Efficiency: the basic difference between CFB boilers and other types of boilers lies in the burning system. As stated previously, the thermal efficiency of CFB can be over 86%
- Wide range and Rapid Load Adjustment: the load of a boiler often charges when the boiler is working. When the load drops below 70%, the combustion efficiency and thermal efficiency of other types of boilers will drop noticeably and the burning will be unstable, sometimes even the burning cannot be maintained normally; while by simply adjust coal air feeding and recycled material, the load of CFB can be adjusted in a range of 30-110%; the rate of load-adjusting is also rapid (generally 4% per minute) due to high section wind speed and easy control of heat absorption.
- Clean Combustion Technology: simple desulphurization can conducted in the furnace when lime stones are added into furnace; desulphurization efficiency can be higher than 80% when mole ration of calcium and sulfur is 2; generation of NOx is extremely low because of the adoption of class-divided wind delivery and low temperature combustion, resulting in reduction of SOx and NOx emission and improvement of quality of environment.
- Easy to realize the integrated utilization of ashes: coal can be combusted completely; consequently carbon content in ash is very low. As a result, ash residue can be utilized directly into cement and construction material marking.
- Heating surface of immersed pipes is not in the fluidized bed furnace: heating surface of immersed pipe is not needed in the fluid bed, so there is no trouble of wearing of the surface.
1. The boiler efficiency can achieve 88 to 89 percent, depending on fuel moisture and sulfur contents.
2. 90-95% SO2 percent sulfur removal;
3. 60 percent reduction of NOX emission;
4. Comply with particulate emission standards.
The CFB boiler can use coal in a more environmentally responsive and efficient manner.

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