In this study, it was calculated energy and exergy analysis of a lime production for the fluidized bed boiler by a case of sugar factory. The aim of this study is to show calculation of the energy and exergy analysis of a lime production for the fluidized bed boiler, and to determine a lime mass quantity for the factory process. This factory is a sugar factory that has got many heat processes for the sugar raw filtration and defection. The production of lime mass was found 1.2973 [kg/s]. The production of lime (CaO) energy result was found 4121.92 [kW] and exergy result was found 2766.97 [kW]. Energy (CaO) quality was found 0.671.