Odborný seminár bude venovaný problematike matematického modelovania laboratórneho prítokového kopolymerizačného reaktora.

This presentation concerns mathematical modelling and
validation of a lab-scale semi-batch emulsion copolymerization reactor
for styrene and butyl acrylate in the presence of n-C12 mercaptan as
chain transfer agent (CTA). The mathematical model is developed by
using reaction rate laws available in polymerization literature. The
population balance equations are based on a new approach which reduces
significantly the number of the equations involved and calculation
costs. The model is used to predict the global monomer conversion, the
number and weight average molecular weights, the particle size
distribution and the residual monomers. A subset of the most
influential parameters of the model is identified using a parameter
estimability approach. The later parameters are then estimated by
minimizing the errors between the prediction and the measured data
where the set of non-estimable parameters are set to there nominal
values obtained from literature. The model is then validated in order
to be used to compute optimal profiles of monomers feed-rates which
minimize a set of objective functions, subject to a set of tight
operational constraints.

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