technical NOTES

Pre-Heater Cyclone Efficiency

Data Unit S1 S2 S3 S4

Size of Cyclones Mm

2 x

8200

4 x 7500 4 x 8340 2 x 7600

2 x

8200

2 x 9500 2 x 9180

2 x

8000

2 x

8500

2 x 9500 2 x 9690

2 x

8600

2 x

8500

2 x 9500 2 x 9690

2 x

8600

2 x

8500

2 x 9500 2 x 10240

2 x

8600

2 x

8500

2 x 9500 2 x 10240

2 x

8600

BENEFITS

Reduction in PH Exit Tempera-

ture due to Cyclone design °C^1610011

Heat Savings

Kcal/

kg.Clk 7.21 4.81 0.00 4.56

Monitory Savings due to Heat

Savings

Lacs/

Annum 239.7 161.2 0.0 151.8

Power Savings w.r.t. reduction in

gas qty. kwh/t 0.034 0.023 0.000 0.021

Monitory Benefit due to power

savings

Lacs/

Annum 4.50 3.06 0.00 2.80

Total Monitory Savings per

Annum

Lacs/

Annum 244.2 164.2 0.0 154.6

9.2 Conclusion
Although the Pressure Drop will increase due to increase in Efficiency but it will be
nullified as the flow requirement is reduced due to heat savings. But Savings on
account of power is considered.