Increase in Insulation Thickness
Data Unit S1
Benefits
Reduction in Surface Temperature °C 20
Heat Savings Kcal/kg. Clk 8.02
Monitory Savings on account of Heat Sav-
ings Lacs/Annum^267
Increase in PH Exit Temperature °C 10
Extra Power Generation due to increase PH
Exit Temperature MW 0.360
Monitory Savings on account of Power
Generation Lacs/Annum^114
Total Monitory Savings per Annum Lacs/Annum 381
Extra Investment for Higher Offered Size
Extra Cost of Steel Lacs 9
Extra Cost of Refractory + Insulation Lacs 166
Total Extra Investment Lacs 175
ROI
Payback in Years Years 0.5
- Note: Operating cost shall be validated with present condition
Conclusion
- As per above table it is evident that increasing insulation thickness is beneficial,
as the radiation losses gets reduced thereby reduction in specific heat
consumption by approximately 6-8 kcal/kg clinker for additional approx. 100 mm
of insulation on average in PH and PC.
- Shell life may also increase due to reduced possibility of chemical attacks on PH
cyclone shell and temperature reduction also contributes.
