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CFBC Boiler

亚博88app>CFBC Boiler

CFBC BOILER : Available in 35 TPH – 120 TPH capacities

WHAT IS CFBC?

锅炉在其中煤炭被烧毁环境of high concentration of bed material (mineral matter) derived from combustion of coal retained by using cyclone / Separators / other means. This bed material is fluidized by primary air (a part of combustion air).

The high concentration of bed material along with staged air supply ensures that bulk combustion temperatures do not exceed 950°C making it environment friendly (lesser production of NOx) means of utilizing coal.

In CFBC boiler, this ash (mineral matter) is separated using a cyclone or similar device and RECYCLED back and hence termed as CIRCULATING FLUIDIZED BED.

In a fluidised-bed combustor, combustion occurs when proven worldwide for allowing a wide range of fuelthe mixture of fuel and fuel ash particles / Bed material is suspended by using a continuous stream of primary combustion air to create turbulence in the bed. The gas cushion between the solids allows the particles to move freely, giving the bed a liquid-like (fluidised) characteristic.


WHY CFBC

With emission norms getting stringent every day, it is becoming a challenge to install and operate AFBC boilers due to high SOx and NOx emissions. Industry having requirement of smaller range boilers say less than 80 TPH are forced to install costly FGC technologies. This not only impact CAPEX but OPEX also.

CFBC, is a better alternative to AFBC or even Pulverised Combustion (PC).


CFBC technology offers several benefits :

CFBC boilers are验证全球,允许各种燃料qualities and sizes to be burnt.

Emissions of SOx and NOx are significantly reduced和out the addition of expensive flue gas emissions control systems. This is due to the fact that the combustion temperature in a CFBC boiler (800 – 900ºC) is significantly controlled as compared to AFBC and lower than in PC boiler (1300–1700ºC), which results in considerably reduced NOx formation.

Majority of the sulphur in the coal is captured by limestone that is injected into the furnace;可以实现约90%至95%的SO2减少。

较低的燃烧温度也limits ash fouling and corrosion of heat transfer surfacesallowing the CFBC to handle fuels that are difficult to burn in PC boiler.

Even though the combustion temperature of a CFBC boiler is low, the circulation of hot particles providesefficient heat transfer to the furnace wallsand allows a longer residence time for combustion and limestone reaction. This results in good combustion efficiencies

  • Ability to burn wide range of design fuels
  • Fuel cost is largest component of a power plants operating cost thereby providing thehighest opportunity for fuel cost saving
  • Ability to co-fire carbon neutral fuels / Biomassto meet country / utility green power goals
  • Effective and economical sulfur capturein furnace using Limestone
  • Calcium rich ash can be reactivated for further SOx reduction, recycled or landfilled
  • 非常低NOx炉的水平
  • Simple SNCR can be used for further NOx reduction if needed
  • Dry process requiring no water

挑战

大多数印度供应商提供的当前设计和能力适用于更大的尺寸要求。由于这些公司的高版税和高架设备,较小的容量锅炉并不具有成本效益。

For small sizes specially for Process Steam requirement, no other option than Imported Boilershaving reliability and spare parts issues.


CFBC锅炉应该是什么特征?

  • 燃料灵活性
  • Long burning time for high thermal efficiency
  • 低维护
  • High Availability / higher reliability
  • Low LOI in Ash
  • 低SOX,NOX和CO发射
  • 低床材料消耗
  • Greater solid recalculation ratio – for higher combustion efficiency.
  • Uniform temp. profile across the furnace height
  • Better turn down ratios
  • 更高的可用性(> 93%)
  • Lower erosion
  • Minimum operating cost.
  • Automated operation.

WHY MAGO THERMAL ?

追求提供行业innovative, viable and cost-effective solution, Mago Thermal offers smaller and medium rangeCFBC boilers (as small as 35 TPH)“赫斯特”。

这些锅炉是适当的CFBC技术,所有优势都是可能的。

With nominal incremental price over AFBC boilers, Mago Thermal CFBC boilers are best optionfor better efficiency and emission norms.Some of features including :

  • Compact, economical design
  • Higher combustion efficiency >87 % on coal
  • Lower power consumption.
  • 低维护成本
  • 在熔炉中捕获,加入细粒的CaCO3颗粒确保95〜97%的硫捕获,因此不需要FGD
  • Low NOx emission
  • Less refractory hence quicker startup / lower maintenance
  • 较低的侵蚀问题
  • Higher reliability & availability

AT MAGO THERMAL, WE OFFER

  • 新的CFBC锅炉从35 TPH到120 TPH。压力高达125 ATA和过热器蒸汽温度高达548℃。
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