Fluid flow in a real packed bed can be approximated as ________________ model?
Correct answer: B. Dispersion
- A. Plug flow
- B. Dispersion
- C. Mixed flow
- D. Tank in series
Explanation
A real packed bed has axial spreading caused by nonuniform voids and molecular or turbulent mixing, so the axial-dispersion model is more realistic than ideal plug flow. The dispersion model approaches plug flow when axial mixing is very small.
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