AFBC Boiler Working Principle And Operation

AFBC boiler is a very developing technology now these days this technology is widely used in the industrial boiler for the purpose of efficient and clean burning of coal and other fuel for steam generation. AFBC boiler is suitable for combustion of low quality fuel . In AFBC boiler fluidization bed combustion is method of burning of solids fuel in which the fuel is continuous fed into hot fluidized bed of inert bed material. Inert fluidized bed is heated to the ignition temperature of fuel and fuel is supplied continuously into the bed. The fuel burn rapidly and the bed attain a uniform temperature. In AFBC boiler combustion is take place at about 850- 950 degree Celsius. What are the things should be inspect during start up of AFBC boiler ?

Start up inspection of afbc boiler:

1.All main hole doors are closed.
2. all drives, drag chain , pocket feeders are proper running condition.
3. All pneumatic damper, discharged damper and compartmental damper are in proper working condition.
4. All interlock & protection are in line.
5. Check availability of coal of specifications size ( 4mm to 6mm) & c.v : 6000-6600 kcal/kg
6. Check stock availability of bed material.
7. Check availability of bed material of below specification :
Size :0.85 mm to 2.36 mm
Partical density : 2000 kg/cu.m.
Bulk density: 1000 kg/cu.m
chemical composition:
Alumina: 35% to 45 %
Silica 65% to 55%
Fusion temperature : 1400 deg. C
8.Check availability of kerosene Approx. 25 liters required per start up.
9. Check availability of water and boiler feed pump running.

For more information about the AFBC boiler working principle and operation or the difference between AFBC and CFBC, please consult our online customer service.