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Removal of Organic Impurities from Polymer Pellets
Author(s) -
Chen Z.,
Meier D.,
Pruess J.,
Warnecke H.J.
Publication year - 2001
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/1521-4125(200105)24:5<523::aid-ceat523>3.0.co;2-8
Subject(s) - countercurrent exchange , pellets , interphase , polymer , dispersion (optics) , adsorption , thermodynamics , diffusion , pellet , nonlinear system , impurity , chemistry , materials science , chromatography , organic chemistry , physics , composite material , quantum mechanics , biology , optics , genetics
An investigation into the behavior of removing low molecular organics from polymer pellets in a countercurrent extraction column is presented. A mathematical model is developed, describing it in terms of intraparticle diffusion, adsorption, interphase equilibrium, convection and dispersion. The corresponding parameters are determined using nonlinear regression. The resulting partial differential equations are solved using a numerical method. The validity of the model is verified by means of experimental data.