Particle Circulation Modeling of a Bulkhead-Mounted J-Type Loop Seal in a Circulating Fluidized Bed

To realize flexible heat integration among several reactions, a bench-scale three-compartment circulating fluidized bed (CFB) system integrating internal J- and L-Type loop seals aimed at developing. This process requires the prediction of the particle transport rates from the operational parameters. This study aimed to develop a predictive model for particle transport rates Formula: see text in the J-Type loop seal. Experiments were conducted in a specially designed two-compartment fluidized bed equipped with a J-Type loop seal on the partition wall, focusing on the relationship between Formula: see text and loop seal aeration velocities. Two characteristic behaviors were observed in the dependence of Formula: see text on the bed height difference Formula: see text a square-root increasing region at low Formula: see text and a linear increasing region at high Formula: see text separated by a critical transition point Formula: see text A mathematical model that incorporates both regions was developed based on loop seal aeration velocities. Furthermore, the fitting parameters in the model were obtained through linear regression analysis as a function of particle size, thereby enhancing the model’s applicability across a range of operating conditions.