非熱プラズマ複合プロセスを用いたCO₂濃縮・還元処理技術

抄録

Global warming is mainly due to carbon dioxide (CO₂). We need high efficiency and low cost of CO₂ processing technology. In this study we carried out basic experiments on reduction of CO₂ to CO using nonthermal plasma for the purpose of using CO as fuel. In the experiments we processed CO₂ at high concentration using circulating flow and absorbent, to obtain high efficiency. We should use absorbent several times to desorb CO₂ efficiently. In the experiments using the same absorbent for eight times, CO₂ desorption increases gradually. In further experiments, we change circulation flow rate at a desorption process. By reducing the flow rate, heat from the plasma reactor stayed in the absorbent chamber. Because desorption from absorbent is endothermic reaction, the amount of CO₂ desorption increased. As a result, the amount of CO increased simultaneously.