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4.4 Study Aims and Experimental Plan Overview 4.4.1 Study Aims It is evident from the literature discussed earlier that axial dispersion effects are more significant for the particle size used in small scale PSA processes. However, there are no current studies that demonstrate how much his affects the adsorption rate of small LiLSX particles. Since the adsorption rate significantly affects process performance, properly estimating it for process simulators is critical. The first aim of this study is to fill this knowledge gap in literature. Understanding the impact of axial dispersion effects on small scale PSA process design will also help fulfill the other aims in this study. While small scale PSA processes operate in a similar fashion to larger scale processes, several key differences exist including a much smaller particle size, shorter column length, and a faster cycling rate. These differences increase the complexity of understanding the limits of small scale PSA processes. While single column studies have demonstrated a minimum BSF exists, it has never been demonstrated for a dual-column process. Furthermore, a true understanding of why the minimum occurs is still lacking. The second main aim of the study is to increase understanding in this area by measuring a minimum BSF for a two-column process. The final aim of the study is then to determine what causes a minimum BSF. Through a better understanding of small scale PSA process limitations, it is hoped the design of these processes may be improved in the future. 65PDF Image | LIMITS OF SMALL SCALE PRESSURE SWING ADSORPTION
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