Numerical analysis of CO2 concentration and recovery from flue gas by a novel vacuum swing adsorption cycle

Abstract The objective of this work is to study the feasibility of carbon dioxide concentration and recovery from flue gases using a novel VSA cycle without rinse step with the aid of mathematical modeling. A theoretical model based on conservation equations (following the one proposed by Da Silva and Rodrigues (2001) ) is used for an initial evaluation of the process performance. Activated carbon is the adsorbent considered, simulating adsorption equilibrium and kinetics with the equations proposed by Kikkinides, Yang, and Cho (1993) . According to the simulated results, it is possible to recover carbon dioxide with high purity (>93%) from a mixture with 13% carbon dioxide at 40 °C, with higher recovery (>90%) and a lower power consumption (

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