- SS AQC Boiler Super Heater Zone Casing to reduce the erosion rate.
- CFD analysis of Boilers and its ducting for minimum erosion.
- Bare final Super heater modules and 2FPI fining for other HP Sections considered
in AQC Boiler to reduce the fouling. - Restricted Boiler tubes fin height, to reduce the fouling.
- High wear resistance refractory lining selected at inside the AQC Boiler hopper
and inlet flue gas duct, to reduce the erosion. - High thickness guillotine damper flap considered to increase the damper life.
- 99.9% sealing, flue gas isolation damper selected for reliable operation and to
attend any repair inside the boiler during cement plant running condition. - Dual RAV considered in PH Boiler to avoid the air ingressment.
1.9 PH BOILER:
The flue gas, at 265 0C, from the
top of the Pre-heater will enter
the boiler and exit temperature
of the flue gas will be 1500C.
The part of the flue gas from
the boiler will be used for drying
of raw material in Raw Mill, as
per requirement. Rest flue gas
directly and flue gas from the
raw mill exit will be channelized
to the existing RABH (Reverse
Air Bag House) installed for kiln
and Rawmill. When the boiler
will be non-operational the flue
gas will be treated in RABH
directly. In order to improve
the utilization of waste heat
boiler, dual pressure system
is adopted. It is an outdoor,
vertical type arranged boiler.
The boiler structure is compact.
The flue gas path will be as
follows:
- High-pressure super heater
- Low-pressure super heater
- High-pressure evaporator
- High-pressure economizer
- Low-pressure evaporator