Analysis of Radial Heat Transfer in Cooled Fixed-Bed Reactors by One- and Two-Dimensional Models

Titelangaben

Bischoff, Cora ; Jess, Andreas:
Analysis of Radial Heat Transfer in Cooled Fixed-Bed Reactors by One- and Two-Dimensional Models.
In: Chemie Ingenieur Technik. (2026) . - e70175.
ISSN 1522-2640
DOI: https://doi.org/10.1002/cite.70175

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Abstract

Exothermic reactions in a wall-cooled fixed-bed reactor are analyzed using one-dimensional (1D) and two-dimensional (2D) models. Radial temperature profiles from the 2D model provide insight into heat transfer and serve as a foundation for optimizing the 1D approach by adjusting the overall heat transfer coefficient. Heat transfer correlations are derived and implemented in the 1D model to improve the prediction of reactor performance across varying reaction parameters. Thermal runaway behavior is examined for different scenarios, enabling analysis of runaway conditions and reactor performance for stable operation. The optimized 1D model is compared with the 2D model to evaluate their accuracy and sensitivity to varying reaction parameters.