TECHNICAL PREPARATION 13
Clinker Cooler
For clinker cooler sizing and design, the specific requirement
given to all suppliers were:
- Cooler area: Cooler loading to be maximum 50
TPD/m² at potential capacity of 9,500 TPD - Recuperation efficiency: To be maximum for
lower specific fuel consumption - Zero vent gas losses: Our aim was zero vent gas
losses from cooler stack; after required recuperation
air and all the remaining gases would go to the
WHRS boiler from two midpoints. The outlet of the
WHRS boiler was recirculated back to the cooler
by a hot air recirculation duct. So practically no
vent gases are allowed in the stack with WHRS on
condition. This would help in reducing clinker dust
to stack and also a reduction in power consumption
of ESP fan - Hot air recirculation duct: Suppliers were asked
to design for the rerouting of hydraulic lines in such
a way that all the vent gases are recycled back to
cooler - Clinker temperature: It shall be 65 oC + ambient
temperature
We had a detailed discussion with all OEM’s of cooler along
with IKN Engineering India Private Limited for higher
efficiency cooler with lower maintenance. Hydraulic roll
breaker (HRB) was considered against standard hammer
breaker because HRB is more robust and reliable during