Multiscale and Multiphase Model of Fixed Bed Reactors for FischerTropsch Synthesis: Intensification Possibilities Study
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2017 American Chemical Society. A multiphase fixed-bed reactor (FBR) model for Fischer-Tropsch Synthesis has been developed. A high level of details is considered for description of the phenomena on the reactor and particle scale. Detailed kinetics is used, with parameters estimated from experiments with a cobalt-based catalyst. Model robustness has been validated using literature data. Performance analysis was made for a conventional scale FBR with egg-shell distribution of catalyst and a millimeter-scale FBR with small particles and uniform distribution. In both cases, diffusion limitations are almost eliminated due to use of small diffusion lengths. For similar qualitative results, a milli-scaled design would result in a significantly lower reactor volume, but the capital costs could be high due to large wall area and a vast number of tubes. Heat removal is efficient in both cases, and pressure drop in the milli-scale reactor is low due to the use of a shorter bed and lower velocity.
Industrial & Engineering Chemistry Research
author list (cited authors)
Stameni, M., Diki, V., Mandi, M., Todi, B., Bukur, D. B., & Nikaevi, N. M.