Abstract: A mixed integer non-linear programming (MINLP) model solving a multi-objective optimization problem that minimized make span and impact of energy consumption was proposed for multi-product batch chemical process scheduling. In this model，the energy consumption factor and decision factor for various products were defined for trade-off between make span and energy consumption. An improved simulated annealing (SA) algorithm was used for solving the problem，and several cases for an example problem were studied. The proposed model could be used to show how the energy consumption consideration affects the scheduling of a multi-product batch process.