technical NOTES

Comparison for 4/ 5/6 Stage Preheater (Estimation at 9500 TPD Capacity) 
PH Stage Reduction
Remarks
Data Unit 4 stage 5 Stage 6 Stage
Grid power
Cost
Rs/ kwh 7.1 7.1 7.1 

Cost of Power
generation by
WHRS

Rs/ kwh 0.3 0.3 0.3 

Clinker
Production
TPD 9500 9500 9500 Potential capacity

PH Exit sp. gas
volume

Nm3/ kg

clinker

1.45 1.4 1.33

Sp. Fuel
Consumption
kcal/kg clinker 725 700 680

4 Stage 725

5 Stage 700

6 Stage 680

PH exit gas
volume
Nm3/ hr 573958 554167 526458

PH exit gas
temperature
Deg c 340 290 265

Boiler outlet
temperature
Deg c 150 150 150

PH Gas specific
heat

Kcal/ Nm3/

deg c

0.350 0.348 0.348

Heat available
for WHR from
PH

Mkcal/ hr 38.18 27.03 21.05

Heat utilised in
WHR
kcal/kg clinker 96.45 68.30 53.17

Power
generation
potential (
3800 kcal/
kwh) from PH
Gross

MW 10.05 7.11 5.54