Development of Process Simulation Model for Lime Production

Lime production is a process that entail complex material and energy transport and chemical reaction. Efficient lime production processes are realized via well structured design models approach . Simulation of such process design models essentially provides Information on the attractive features and technical limitations of such processes which serves as guide for normal operations. The choice of appropriate descriptive models forms the basis of a valuable simulation of the process of limestone calcination. This work aim at developing a systematic development of process simulation models for lime production via calcinations of limestones . The various transport phenomena and chemical reaction models prevailing in the conversion of limestone to lime in the kiln are presented in a fundamental and systematic manner. The calcination models which forms a layer model for overall kiln design have been simulated over a temperature range of 900 to 1080’C at varying pressures for Jakura and Ukpilla limestone sources found in the central region of Nigeria. The results show the variation of calculation times in respect of limestone particle size and the kiln pressures. Employment of the models in the simulation of lime production will ensure high utility of the simulation tool.