Optimization of Energy Consumption in Gas-Phase Polymerization Process for Linear Low Density Polyethylene Production

摘要

Gas-phase polymerization is a method that is widely used in the polymer production process. The heterogeneous reaction between monomer gas and solid catalyst takes place in the fluidized bed reactor to produce the polymer product. The design and production planning of this process is a difficult task due to the complicated fluid behavior and polymerization reaction inside the fluidized bed reactor. In this paper, a model of the fluidized bed polymerization reactor for linear low density polyethylene (LLDPE) production is developed using the Aspen Custom Modeler (ACM) to predict the polymer characteristics and flow behavior. The developed model is then integrated to the main process flow simulation in order to optimize the energy consumption in the polymer production process. The results show that the total energy requirement is reduced while maintaining the same polymer characteristics.