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Modeling and optimization of suspension SAN polymerization re actors

✍ Scribed by M. J. R. Cavalcanti; J. C. Pinto

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
422 KB
Volume
65
Category
Article
ISSN
0021-8995

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✦ Synopsis

A detailed mathematical model is developed to describe the operation of batch-modified SAN [ styrene (ST) /acrylonitrile (AN )/a-methylstyrene (AMS )] terpolymerization reactors. The model is validated by comparing simulation results with published and plant experimental data. Optimal temperature policies and initiator feed concentrations are then computed. It is shown that optimal operation conditions may be extremely sensitive to small perturbations, so that optimal operation conditions may actually be unfeasible. It is also shown that average polymer molecular weight may be properly controlled by adding small amounts of inhibitor into the polymerization medium, which is usually cheaper than using chain transfer agents to control the average polymer molecular weight.

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