Product Profile of Circulating Fluidised Bed Boilers
Thermax Babcock & Wilcox Limited offers Circulating Fluidised Bed Boilers. The Circulating Fluidised Bed Boilers are low maintenance, reliable boilers. The Circulating Fluidised Bed Boilers function with stringent emissions regulations. These Circulating Fluidised Bed Boilers are made with a simple U-beam particle separator design. The Circulating Fluid Bed Boilers burn fuels like high sulfur coal, pet, high ash-waste coal, coke, lignite, anthracite clum, wood paste etc. The Circulating Fluidised Bed Boilers feature Internal Recirculation with two stage soild separation system.
Some salient features of these Circulating Fluidised Bed Boilers are such as:
- No sootblowers are required in convection pass.
- CFB boilers do not require high pressure blowers.
- CFB boiler availability is frequently more than 95 percent.
- Auxiliary power consumption by CFB boilers is relatively lower.
- Sulfur capture is > 90percent and NOx emission is < 100 ppm.
- Use state-of-the-art CFB technology to achieve lower emissions levels.
- CFB boiler has one-fifth of the total refractory of the hot cyclone CFB boiler.
- Bubble cap nozzles are well designed, and at low load not much solids backsifting is experienced.
- Technology is suitable to burn a wide range of fuels, or opportunity fuels with less expensive fuel preparation.
- Boiler design allows wider load swings, with high turn-down [approximately 5:1] without auxiliary fuel support.
- Boiler building volume is considerably reduced because of the U-beams are located inside the furnace. Building volume is reduced by 20 to 30 percent.
- CFB boilers have .35 in. [15.9 mm.] thin refractory. Therefore, virtually no limitation on start-up [usually less than 6 hours to reach full load].
- U-Beam gas velocity is around 26 ft/s. [8 m/s.]. The flue gas and solids are uniformly distributed and at that gas velocity, there is virtually no erosion in furnace roof or U-Beam materials.
