本研究將超細微孔製備微奈米氣泡技術應用於氣液接觸反應器以補獲煙氣(Flue gas)中的高濃度 CO2 ，建立微奈米氣泡反應器相關製造技術及實驗平台及量測方法。在微奈米氣泡反應器的設計開發過程中，必須考慮到氣泡產生器與吸收劑之間的化學相容性，經文獻指出與實驗搭配後，選用 NaOH 作為吸收劑，氣泡產生器之發泡材料則為發泡金屬網與自行燒結之沸石多孔性介質。實驗結果中顯示微奈米氣泡反應器實驗平台已經成功被開發，將氣泡產生器之孔徑由 4000μm 縮小至 7.4μm可使捕獲效率提升 3 倍。此外本研究也觀測改變吸收劑濃度之影響，結果顯示提升吸收劑濃度雖然擁有越多可與 CO2 反應的 OH-以提高 CO2 之捕獲量，但對其整體之捕獲效率並無顯著影響；而提高吸收劑溫度，對反應整體捕獲效率也只有些許的提升。綜合上述，縮小氣泡產生器孔徑尺寸增加氣泡與吸收劑之氣液接觸面積，特別的可以有效地使CO2捕獲效率大幅提升，解決 CO2 捕捉時高性能低耗能的需求目標。

In this study, a micro-nano bubble reactor designed with ultrafine pore method was used in a gas/liquid contactor to capture high concentrations of CO2 from flue gas, and a manufacturing technique, experimental platform, and measurement method were developed for the reactor. The development of a micro-nano bubble reactor takes into account the chemical compatibility between the bubble generator and absorbent. Therefore, the relevant literature was reviewed, and some experiments conducted, NaOH was used in this study as an absorbent. A metal foam and a researcher-sintered zeolite porous medium were employed as the foam material of a bubble generator. The experimental results confirmed the successful development of the micro-nano bubble reactor experimental platform, in which the bubble generator observed its the CO2 capture efficiency increased three time when the generator’s pore diameter was reduced from 4000 μm to 7.4 μm. Moreover, an observation of how CO2 capture efficiency varied when the absorbent concentration was changed revealed. Although increases in the absorbent concentration resulted in high amounts of OH-, which led to more CO2 captured by reacting with it. This did not have any significant influence on the overall CO2 capture efficiency. Even though the absorbent temperature was raised, the overall capture efficiency improved only a little. On the whole, successfully improved CO2 capture efficiency by reducing the pore diameter of a bubble generator.

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