Journal
CHEMIE INGENIEUR TECHNIK
Volume 91, Issue 5, Pages 583-591Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cite.201800179
Keywords
CFD; Fixed-bed reactor; Heat transfer; Radiation
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Funding
- ProcessNet subject division Reaction Engineering
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Fixed-bed reactors often operate at elevated temperatures, where radiation can be a significant heat-transfer mechanism. Particle-resolved CFD models fixed-bed reactors on a very detailed macroscopic level. In this study, the contribution of radiative heat transfer is investigated in a 500-mm bed of 7-hole pellets. At industrially relevant temperatures (250 - 800 degrees C) and with a steam-reforming gas-phase mixture, the S2S and DOM radiation models were applied. Neglecting radiation results in temperatures being up to 6 % lower. In this case, the main driver is surface-to-surface (S2S) radiation. Additional modeling recommendations are given.
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