Gas-Liquid-Liquid Slug Flow for Improving Liquid-Liquid Extraction in Miniaturized Channels
Gas-Liquid-Liquid Slug Flow for Improving Liquid-Liquid Extraction in Miniaturized Channels
复制标题
DOI：
10.1021/ie1024326
复制
发表时间：
2011-04-20
影响因子：
4.2
通讯作者：
Mae, Kazuhiro
中科院分区：
文献类型：
--
作者：
Aoki, Nobuaki;Ando, Ryuichi;Mae, Kazuhiro
为了增加能够在小型化通道中形成段塞流的最大流速，在液-液段塞流中添加气相段塞以形成气-液-液段塞流。研究了通道尺寸、空隙率（气相体积流量与总流量之比）和水相与有机相体积比对流动状态的影响。结果表明，在聚（PTFE）管（内径（id.），3 mm）。气-液-液弹状流中的传质速率也很高，因为内循环流动通过增加流量而增强。然后将传质系数与通道i. d关联。和流速。
To increase the maximum flow rate that enables slug flow formation in miniaturized channels, gas-phase slugs are added in a liquid-liquid slug flow to form a gas-liquid-liquid slug flow. Effects of channel size, void fraction (ratio of volumetric flow rate of gas phase to that of total flow rate), and volume ratio of aqueous phase to organic phase on flow regime are examined. Results indicate that the total liquid-phase flow rate that forms a stable gas-liquid-liquid slug flow increases up to 200 mL/min with air addition (void fraction > 0.1) in a poly(tetrafluoroethylene) (PTFE) tube (inner diameter (id.), 3 mm). The mass-transfer rate in the gas-liquid-liquid slug flow was also high because internal circulation flow is enhanced by increased flow rate. The mass-transfer coefficient was then correlated with the channel i.d. and the flow velocity.