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CHAPTER IV CHALLENGES OF SMALL SCALE PSA This chapter demonstrates the key differences between PSA on a large and small scale. It also provides background on the current state of the literature in this research area and discusses the challenges in understanding the limitations of small scale processes. Finally, it highlights current knowledge gaps in literature to demonstrate how this dissertation fits into the field of PSA. 4.1 Effect of Particle Size Reduction in Small Scale PSA Decreasing adsorbent particle size in packed columns is known to increase axial dispersion effects.26 However, the extent to which it affects the mass transfer rate in PSA processes remains uncertain. Knowledge of the limiting mass transfer resistance in a PSA process is important for process design. Furthermore, PSA simulation models rely on assumptions about mass transfer rate limitations for an adsorption rate approximation. Hence, improving simulation accuracy depends on properly estimating relevant mass transfer limitations in a PSA process. 48PDF Image | LIMITS OF SMALL SCALE PRESSURE SWING ADSORPTION
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