Development and Monitoring of a Continuous Polyurethane Pilot Reactor

Development and Monitoring of a Continuous Polyurethane Pilot Reactor

The transition from batch to continuous polyurethane (PU) process is considered for process intensification. An integrated methodological and technological study is proposed. The development of the new process is based on modeling and product characteristics. In order to do so, the kinetics of the p...

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Bibliographic Details
Published in:Chemical engineering & technology Vol. 33; no. 11; pp. 1900 - 1908
Main Authors: Nadjiadjim, G., Sheibat-Othman, N., Févotte, G., Dupuy, J.
Format: Journal Article
Language:English
Published: Weinheim WILEY-VCH Verlag 01-11-2010
WILEY‐VCH Verlag
Wiley-VCH Verlag
Subjects:
Chemical and Process Engineering
Engineering Sciences
Kinetics
Near-infrared spectroscopy
Polyurethane
Process intensification
Tubular reactor kinetics
polymerization
reactivities
functional-groups
Tubular reactor kinetics
Polyurethane
kinetic-model
linear polyurethanes
Process intensification
Kinetics
Near-infrared spectroscopy
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Description
Summary:The transition from batch to continuous polyurethane (PU) process is considered for process intensification. An integrated methodological and technological study is proposed. The development of the new process is based on modeling and product characteristics. In order to do so, the kinetics of the polyaddition of polycaprolactone diol (polyol) and 4,4'‐diphenylmethane diisocyanate were studied and identified by using offline measurement of the diisocyanate concentration. Some characteristics of the final polymer were also investigated, such as the heat capacity and viscosity that affect the behavior of the continuous process. These results were used to design a tubular reactor for continuous production of PU. Since online monitoring of intensified processes is primordial, in situ near‐infrared spectroscopy was used to predict the concentration of free diisocyanate in real time. Process intensification is important in polymer production to ensure flexibility in switching from one polymer production to another, reproducibility, enhance mixing and heat transfer, and avoid losses due to changes in raw materials or deviations of the process compounds. Based on modeling and product characteristics the transition from batch to continuous production of polyurethanes was developed.
Bibliography:National Agency for Development and Research in France (ANVAR)
ark:/67375/WNG-TS68H0FK-H
istex:5EFD56776D988A25513F4C69C6978F3D49E4B10F
ArticleID:CEAT201000296
ISSN:0930-7516
1521-4125
DOI:10.1002/ceat.201000296