高効率二酸化炭素分離吸収に向けたイオン液体静電噴霧に与える直流パルス電圧印加効果

抄録

Ionic liquid exhibits outstanding performance for selective absorption of carbon dioxide(CO₂). Ionic liquid electrospray for CO₂ absorption has been proposed as a high performance CO₂ absorption system. CO₂ absorption is caused through chemical reactions at gas-liquid interface, thus generating smaller droplets leads to higher absorption efficiency. In this study, the effect of applied pulsed DC voltage on ionic liquid electrospray was experimentally clarified. By applying pulsed DC voltage, smaller droplets are ejected compared to applying continuous DC voltage. Applying pulsed voltage of 50 - 150 Hz increases the number of generated droplets more than twice of that for DC voltage. An improvement of CO₂ absorption was clearly obtained when the frequency is in the range of 50 - 150 Hz.