Investigation of CO₂Reaction with CaO and an Acid Washed Lime in a Packed-Bed Reactor

Abstract

In this work, a mathematical model was developed for the prediction of packed-bed reactor behavior for CaOþCO 2 reaction based on the random pore model. A natural limestone and a modified sorbent using acetic acid washing were used for the experiments. The performances of these sorbents were initially determined using a thermogravimeter analyzer. Then, the reaction was accomplished in a packed-bed reactor for obtaining CO 2 breakthrough curves and investigation of model predictions. This model was able to successfully predict the effect of process conditions and solid texture on the breakthrough curves of the packed-bed reactor.

Mixing Time—Experimental Determination and Applications to the Modelling of Crystallisation Phenomena

“…A comprehensive review of available experimental techniques and influence of various parameters has been given by Nere et al (2003) and Ghotli et al (2013). Experimental In this work the laser-induced fluorescence has been used.…”

“…The characteristic mixing times associated with each of these three ranges of scales are different. Nere et al (2003) and Ghotli et al (2013) wrote an expanded review of mixing time models and divided them into five categories: (a) semi-empirical correlations based on experimental data, (b) models based on bulk flow, which assume that the process is controlled by the bulk or convective flow, (c) dispersion based models, (d) models that segregate the whole stirred vessel into a network of interconnected zones, and (e) CFD models. The characteristics of those types of models were extensively discussed by Nere et al (2003) and Ghotli et al (2013).…”