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Evaluation of energy saving possibilities in cyclic fixed-bedadsorption process

Kowalski Krzysztof, Gabruś Elżbieta, Downarowicz Dorota

Chemical and Process Engineering

2020

Vol. 41, nr 3

209–-219

The cyclic Electrothermal Temperature Swing Adsorption (ETSA) process in a fixed-bed column withSupersorbon K40 activated carbon (AC) was applied to remove propan-2-ol (IPA) from air. The bedwas electrothermally regenerated using direct resistive heating method. The tests were performed inthe range of operating parameters: IPA loading 0.18-0.26 kg/kg, voltage 19.5 V, set-point temperature393–403 K, nitrogen flow rate 0.12 m3/h.The analysis revealed, that raising the bed temperature resulted in an increase of desorption degree ofadsorbate, reduction of regeneration time and an increase in the energy consumption. The applicationof insulation enabled reduction of energy consumption and regeneration time by 27% and 10%,respectively.