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キーワード:
Electric Swing Adsorption; Comsol MultiphysicsTM; Multicolumn process
要旨:
Electric swing adsorption (ESA) is an adsorption cycle with electrothermal desorption step [1] (the adsorbent material is heated directly, by passing electric current). Recently, a new ESA system, based on assemblies of one or more annular, radial-flow, cartridge-type fixed-beds, with in-vessel condensation, has been developed [2]. The systems with one, two and four cartridges are shown schematically in Fig. 1.
Mathematical modeling of these systems is very difficult, owing to their great complexity, both from the aspect of geometry, and the number of interacting phenomena and processes (fluid flow, mass and heat transfer, heat generation and condensation). For that reason, the modeling was performed using Comsol MultiphysicsTM. The models for separate steps and for the complete ESA cycles have been built and used for simulations and analysis of the systems’ performance.
References:
1. Petkovska, M. et al, Sep. Sci. Technol., 26, 425-444 (1991)
2. Rood M. et al, US Patent No. 6,346,936 B1(2002)
