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A Study of Particle‐Surface Interactions During Olefin Polymerisation in Gas Phase Reactors
Author(s) -
Eriksson Erik J. G.,
McKenna Timothy F. L.
Publication year - 2009
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200951104
Subject(s) - materials science , polymer , particle (ecology) , polymerization , work (physics) , heat transfer , heat exchanger , phase (matter) , composite material , chemical engineering , mechanics , chemistry , mechanical engineering , organic chemistry , engineering , oceanography , physics , geology
This work focuses on the heat exchange between a polymer particle and the reactor wall, especially for cases with low gas velocity. The role of different wall materials (or heat transfer conditions) is investigated with an eye to understanding how this influences the likelihood of particle melting, and, indirectly, wall sheeting. The main focus of this work was to simulate the temperature profiles inside growing polymer particles in the vicinity of the reactor wall when it is clean (steel) or covered with a layer of non reactive polymer. As a comparison, we have also simulated the reactor wall as being glass to represent bench scale polymerization equipment. The results from this work can help to understand how for instance wall sheeting can be accelerated if the reactor walls are not clean and how we can compare results from bench scale experiments to industrial scale units.