Experimental data is presented for mixture and pure fluid condensation within a wide composition range. Influential parameters for the heat transfer deterioration of mixtures are discussed. The results enable an explicit calculation of condensati...
Wall Layer Formation in Continuously Operated Tubular Reactors for Free‐Radical Polymerizations
Von Wiley-VCH zur Verfügung gestellt
Polymer fouling is a serious issue with continuous reactor operation. This paper presents a CFD model that describes the buildup of a wall layer. Reaction kinetics, a viscosity model, and a new transport model have been derived. Experimental results in capillary reactors in a broad range of concentrations are used to validate the model predictions.<
Polymer fouling is a major problem for the operation of continuous reactors. Therefore, it is important to understand and quantitatively describe the mechanisms leading to formation of fouling deposits. In this work, a CFD model for the radical polymerization of N-vinylpyrrolidone is presented, where the reaction kinetics, a viscosity model, and a transport model for polymer moments are determined from independent experiments. The model is compared to experimental obtained residence time distributions in capillary reactors over a wide range of concentrations. Model predictions are in good agreement with experimental findings.Zum Volltext
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