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Microreactor trials on ziegler natta catalyst

Micro reactor trials on Ziegler Natta Catalyst for HDPE polymers.
On a set of catalysts provided by BP (Ziegler natta, Metallocene), several experiments have been carried out on micro reactor.

Shape replication of the catalysts particle was observed and quantified. Furthermore, it was proved that catalyst particles with the same size and under the same conditions show different activities.

Moreover, due to catalyst/polymer particle fragmentation, it was found that this fragmentation led to formation of sub-grains, which were kept attached to the big particle.

As this phenomenon is considered as being one basic step in the formation of PE agglomerates in commercial scale reactor, this experiments offers the possibility to identify the ways of overcoming the effect of fragmentation for a given catalyst.

These preliminary results are quite encouraging. Next steps will be to get a temperature map to identify and quantify the particle overheating and fragmentation as a function of operating conditions.

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