Cement, Energy & Environment Jan-Mar 2002

ti I , S.No. 1 2 3 4 5 6 7 8 9 10 Table 5 Benefits from Modification of equipment /systems Equipment/ Modification made Power /Fuel saving System achieved Primary air fan Inlet duct connected with 1.5 kcal/kg of clinker cooler ESP stack Primary air fan Variable frequency 0.062 kWh I ton cement in system installed addition to be tter life of fan bearings Bag house fan Slip power recovery 0.060 kWh I ton cement system (SPRS) installed Jet pulse filter GPF) DP Dased operation 0.02 kWh I ton cement Cooler vent fan SPRS system installed 0.02 kWh I ton cement Raw mill material Reversible belt conveyor 0.02 kWh I ton cement feeding system replaced with modified chute Raw mill / Coal Dampers from Raw mill 1.05 kWh I ton cement mill I Clinker fan , coal mill fan, booster cooler circuit fetn, pre-heater to bag house ducts removed. The dampers of 10 nos. of clinker cooling fan arid two numbers Sepax fan also removed Kiln shell cooling Original blades replaced 0.03 kWh I ton cement hms with FRP blades Coal firi ng FK Pulley size 0.03 kWh I ton cement etnd pump blowers reduced,resuJting less 1.50 kcal I kg cl inker transportation of e~ ir Kiln feed re- One air slide rep laced by 0.02 kWh I ton cement circulatil)n svstem direct chute J Contd...... 21