Multiscale and Multiphase Model of Fixed Bed Reactors for Fischer–Tropsch Synthesis: Intensification Possibilities Study Academic Article uri icon

abstract

  • © 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.

author list (cited authors)

  • Stamenić, M., Dikić, V., Mandić, M., Todić, B., Bukur, D. B., & Nikačević, N. M.

publication date

  • January 1, 2017 11:11 AM