Cement, Energy and Environment July-Sep 2002

>- Kiln section cooler fan VSA. common blower. • Installation of VFD in cooler • Optimisation of aeration atr The respective investments on fan 2R. in ki ln feed sect ion by these meas ures and the savings • Modification of inlet duct of connecting two air slides to a accruing from them are as follows : Measure Investment Rs, Lac Installation of VFD at raw mill vent fan 9.24 Upgradation of raw mill capacity by installation of tertiary crusher * 201.00 Installation of VFD at cooler fan 2R 5.28 Modification of inlet duct of cooler fan VSA 0. 10 Optimisation of aeration air in kiln feed section 0.15 Total 215.77 *Raw mill capacity increasedfi"om 200 to 230 TPH 2001-2002 ).- Kiln section • VFD provided for cooler fan 2L. • VFD provided for cooler fan VSA. • Modification of 2nd, 3rd and 5th cyclones of preheate r (PH), rise r ducts and downcomer, increase in he ight of preca lcinator, insta ll ation of hi gher capacity and high- efficiency preheater fan and ESP fan. Figure 5 shows the erection of the 3rd stage riser duct in progress and Firgure 6 the high– efficiency preheater fan after assembly. ).- Cement mill section • Instal lation of .flyash feeding system in cement mi ll No I JCM- 1) for PPC producti.on. • Installation of Sepax separator at CM-2. The respective investments on these measures and the savi ngs accruing from them are as follows : Saving Units Rs Lac/annum 56.00 U I hr 14.49 0.73 U I ton clinker 33.07 10.00 U I hr 2.94 6.00 U I hr 1.86 1.44 U I hr 0.45 - 52.81 Figure 5 Lifting of3" 1 stage riser ductfor assembly. . ..... ..