Abstract
The algorithm generally underpredicted pilot-scale performance, although in some cases, the predicted and actual profiles were similar. The model did a good job of predicting concentration profiles for the bench-scale reactor. Model refinements resulted in: Potential areas for improving the model include basing the carbon dioxide differential equation on phase density and velocities, inclusion of carbon dioxide solubility, and better correlations for liquid-phase dispersion. The pilot-scale FBR continues to demonstrate significant promise for industrial application. New model refinements are needed to account for very high productivities measured in the pilot-scale reactor. Use of a single holdup correlation and limiting the range of solid holdup improved model accuracy and will potentially allow development of analytical Jacobians for improved model stability. Error induced by applying Begovich-Watson parameters measured at the bench scale to the pilot-scale reactor could not solely account for differences in predicted and measured FBR behavior.
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