ENERGY AND EXERGY ANALYSIS OF CEMENT ROTARY KILN
Keywords:
Energy, Exergy, Cement, Rotary kiln, Dry processAbstract
In this study, the rotary kiln of cement industry is taken as the control volume having the length of 75 m,
diameter of 4.35 m and capacity of 4400 MTD. The average operational data for the rotary kiln is collected for the
winter period in the December month of the 2015 for the rotary kiln situated at Gujarat Sidhee Cement Ltd, Morasa, GirSomnath, Gujarat, India for the numerical calculations. This paper reviewed mass and energy balance and analysis,
exergy analysis for the dry process cement industry. The energy lost from the kiln shell is about 6.4 MW. The results for
the analysis show that the 33.63% of the total exergy is still wasted to the environment though the pre calcining and pre
heating of the raw material. The overall kiln exergy analysis show the irreversibility of 61.71% and the first and second
law efficiency for the rotary kiln of GSCL is 51.90% and 38.29% respectively.