Reducing energy consumption, operation cost, environmental impact for LPG separation unity, by using process energy integration

The Liquefied Petroleum Gas (LPG) separation unit is one of process, in chemical industries that consume great energy. In this work, Pinch technology for heat recovery is used to minimize the energy consumption of the LPG separation process, for a Moroccan oil refinery. This methodology was applied to the study of the separation of LPG, using the two distillation columns: recovery and splitter columns. Experimental data required to follow this method, were obtained from Moroccan oil refinery, during period of May 2015. To find the optimal energetic integration, the different calculations were performed by simulation, using PRO II software. Results analyses show that the integration of three heat exchangers in conventional process reduces the energy consumption of process, operation cost and decreases the impact environment.