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Separation Process Engineering: Includes Mass Transfer Analysis, Third Edition by Phillip C. Wankat

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18.3.1 Temperature Swing Adsorption (TSA)

Temperature swing adsorption (TSA) is commonly used for gas systems particularly for the recovery or removal of trace components that are strongly adsorbed (Ruthven, 1984; Yang, 1987). Typical applications are removal of pollutants such as volatile organic compounds (VOC) (Fulker, 1972; Reynolds et al., 2002) and drying gases (Basmadjian, 1984, 1997). The basic cycle using counterflow of the hot regenerant gas is shown in Figure 18-7A. The cycle can be thought of as a purge operation with a hot purge gas. The feed step can be done either with upward or downward flow. If the feed gas flows continuously, two or more units are operated in parallel. Although the pure gas is usually the desired product, in ...

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