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The axial dispersion coefficient is one of the important parameters in the design of the reactors. It has a strong influence on the conversion and selectivity. The present study has been conducted on a packed-bed reactor that had a diameter of 10 cm with particles of various configurations, using the pulse tracer technique. The dynamic response was well-explained by a single-parameter dispersion model. Dispersion, in terms of the Peclet number (Pe) and the Bodenstein number (Bo) has been observed for different bed configurations. Pe increased as the liquid flow rates increased. For spherical particles, Pe was determined to increase as the particle size increased. However, the Pe value for nonspherical particles was greater than that for spherical particles. Based on the experimental results, a correlation has been developed to estimate the dispersion in terms of Bo for packed beds involving different bed configurations.

Dynamic liquid saturation is an important hydrodynamic parameter that affects the performance of a trickle bed reactor. The parameters that affect the dynamic liquid saturation, by using Newtonian ...

The Lockhart−Martinelli type model originally proposed for two-phase pressure drop estimation in the high interaction regime by Pinna et al. [AIChE J. 2001, 47, 19−30] is modified and extended to h...