本研究では液液スラグ流のリアクターとしての利用を目指し、(1)液スラグの形状予測および制御手法の確立、(2)液スラ グ内部循環流の混合効果を利用した微粒子製造ならびに粒径制御手法の確立、(3)微細気泡含有ゲルカプセル連続生成法の提案、を目的とした。2液体の物性が液スラグの形状に及ぼす影響を実験的に明らかにし、スラグ長さや界面形状を予測する無次元相関式を提案した。
分散相スラグを反応場としてゾルゲル法によりシリカ微粒子を生成し、内部循環流制御による粒径分布制御の可能性を示した。また、ゾル水溶液で分散相スラグを形成し管内でゲル化を進行させ形状の揃ったゲルカプセルの連続製造に成功した。
The objectives of this study were (1) to establish a method for predicting and controlling the shape of liquid slug, (2) to establish a method for producing fine particles and controlling particle size by utilizing the mixing effect of the circulating flow inside the liquid slug, and (3) to propose a method for continuously generating gel capsules.
We experimentally clarified the effects of liquid properties on the shape of the liquid slug and proposed a dimensionless correlation equation to predict the slug length and interface shape. The characteristics of the circulating flow inside the slug were clarified by PIV analysis. Silica particle generation by the sol-gel method was carried out inside the dispersed phase slug, demonstrating the possibility of controlling particle size distribution by controlling the internal circulation flow. The gelatin gel beads of uniform size were successfully produced continuously by using L-L slug flow.

研究種目 : 基盤研究 (C) (一般)
研究期間 : 2021～2023
課題番号 : 21K04771
研究分野 : 化学工学