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

Power
generation
potential from
AQC with HAR
Gross

MW 7.26 7.44 7.66

Reduction in
exit losses
due to lesser
gas available
for AQC
(Combustion air
increases due to
higher Sp. Fuel
consumption)
Total power
generation
gross (PH +
AQC with HAR)

MW 17.30 14.55 13.20

Total power
generation net
( 94 % ) (PH

• AQC With
  HAR)

MW 16.27 13.68 12.41

PH exit
operation gas
flow

m3/hr 1397811 1243444 1132394

30 mm pressure

drop in a

cyclone

SPC for pH fan
(w/o WHRS)

KW / of T

clinker

6.27 5.92 5.70 

PH fan
operation flow
( with WHR )

m3/hr 971698 941176 896972

70 mm pressure

drop across

WHR boiler

Total Sp. Power
generation net
(PH + AQC
with HAR)

KW / of T

clinker

41.09 34.55 31.34 

PH fan
operation
sp. Power
consumption
with WHRS

KW / of T

clinker 4.978 5.080 5.088