light up procedure of afbc boilers.
Requirements of Bed material,Charcoal & Diesel.Bed
material
MaximumParticlesize:0.85MMTO2.36MM
B
ulkdensity:1000to1100Kg/M3
Ch
emicalcomposition:Alumina 45%to35%
:Silica55%to65%
F
usiontemperature:1400Deg
C
Q
tyrequiredforstartup:
25
TO 30 MT (Approx.)
Charcoal
Size:20-25MMLumps
C
alorificvalue:60006500Kcal/Kg
Q
tyrequiredforstartupDiesel:
3
5
0 400Kgs (Approx.)
Q
tyrequiredforstartup:
6
0 - 100 Ltrs (Approx.)Preparation before light up
Ch
eck t
h
e bed material & c
h
ar coal are free from moisture.
F
irst compartment to 280 MM of W
C
from DP plate for reduction of c
h
arcoal and dieselconsumption.
B
ed material to be filledand level of defluidised bed s
h
ould be 350 MM of W
C
.
F
ill t
h
e water and keep t
h
e drum level 30-35%.Irrescpective of drum level 30-35% take
water intodrum t
h
roug
h
economiser initial fill up line and drain excess quantity to
avoid any starvation ofeconomiser if yet all economiser is in
emptied before lig
h
t up by any mistake.
E
nsure
CB
D and I
B
D valves are in operation by operating once.
Inspect t
h
e boiler before start and c
h
eck t
h
e following1.
E
nsure t
h
e deaerator water level as normal.
