Investigation of the Effect of Reaction Media (Dry and Condensed) on Heat Removal and Productivity of Gas Phase Polymerization Reactors

Due to the ever-increasing demand for polyolefins, there is a real economic driving force to increase the productivity and space-time yield in gas phase process in order to expand production. Heat removal is one of the main upper limitations on permissible production rates. In order to improve heat removal, the use of condensed mode cooling operation is proposed. It is observed that the instantaneous rate of ethylene polymerization is promoted in presence of induced condensing agents (ICAs). The presence of different commonly used ICAs has a significant impact on the polymerization rate, heat removal, final polymer properties and bed hydrodynamic. So, for achieve the best result, ICA chosen and its amounts are very important.