Removal of carbon dioxide from flue gases in packed column using ionic liquids

Abstract

ABSTRACTThe study of CO2 absorption in ionic liquids (ILs): [Emim] [Ac], [Bmim] [Ac] in a packed column is presented. The influence of mass transfer resistances, initial CO2 concentration, absorption temperature and 2, 5, 10% wt. water addition on CO2 removal efficiency was investigated. The resistance in series model and estimated values of enhancement factor were used to predict with good accuracy mass fluxes of absorbed carbon dioxide for both ILs. The CO2 absorption efficiency in packed column depends on temperature and initial CO2 concentration. The addition of small amounts of water to [Emim][Ac] is of minor effect on CO2 absorption.