Monitoring of Vinyl Chloride Suspension Polymerization Using NIRS. 1. Prediction of Morphological Properties (original) (raw)
Fabrício Machado2009, Computer Aided Chemical Engineering
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2009
This article introduces the use of in-line and in situ monitoring of the dynamic evolution of PVC morphological properties in suspension polymerization reactions based on near infrared spectroscopy (NIRS) intended for control applications. It is shown for the first time that it is possible to follow the dynamic evolution of morphological properties (such as the bulk density, BD, and the cold plasticizer absorption, CPA) in real time. The obtained results indicate that closed-loop control schemes can be properly implemented to control end-use resin properties, which depend upon the morphology of PVC polymer particles. Suspension polymerization of vinyl chloride performed in bench and pilot scale showed that process variables, such as the agitation speed and the amount of suspending agents) can be successfully manipulated in order to control the morphological parameters of PVC resin. Based on this information, a control scheme for these parameters is proposed.
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Related topics
KineticsNear Infrared SpectroscopyControl ApplicationClosed Loop ControlReal TimeReal Time MonitoringBulk Density
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