Abstract
In the field of special distillation processes, pressure-swing distillation (PSD) is the one able to be utilized to separate a mixture with close boiling point or forming azeotrope. The PSD separation is based on the fact that a mixture of components displays sensitivity to pressure, which means that a simple change in pressure can alter the relative volatilities of the components of the mixture with close boiling points or forming azeotrope. Remarkably, PSD can achieve pure products without introducing new additives compared with extractive distillation and azeotropic distillation. Thus, PSD is an environmentally friendly process. This chapter presents a wide aspect of PSD in operation principle, operation mode, conceptual design, and a brief comparison among different special distillation processes.
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