Experimental investigation of phase split of gas-liquid swirling flow through a multi-slot sampler

Liang, Fachun; Sun, Shyan; Han, Luyuan; Chen, Jing; Gao, Jifeng

doi:10.1016/j.expthermflusci.2018.07.015

Cited by 4 publications

(1 citation statement)

References 30 publications

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“…Swirling flow is widely used for gas–liquid contacting in many engineering applications, including static mixers, combustors, and quench boxes. − High-shear and centrifugal forces provided by swirling flow lead to rapid contacting of fluids and regeneration of the interface between phases, , while strong swirl flow causes turbulent pressure fluctuations that lead to the breakup of fluid particles. Swirling flow devices have been applied in many engineering applications due to their obvious advantages of high contacting performance, a very low pressure drop, and relatively low cost. − Koichi Terasaka proposed a microbubble generator using spiral liquid flow, which has a compact size, portability, and a fast oxygen dissolution rate, and it was finally used in the wastewater treatment industry .…”

Section: Introductionmentioning

confidence: 99%

Gas–Liquid Swirling-Sparger Configured along a Toroidal Distributor for the Intensification of Gas–Liquid Contacting

Chang

et al. 2021

Ind. Eng. Chem. Res.

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A gas–liquid swirling-sparger (GLSS) configured along a toroidal distributor was developed based on swirling flow to enhance the efficiency of gas–liquid contacting. Gas–liquid contacting was visualized using a high-speed camera, the gas–liquid mass transfer coefficient was estimated through oxygen absorption experiments, and the hydrodynamic performance and bubble size distribution were analyzed. The results show that the continuous gas phase breaks into microbubbles under shearing action and pressure fluctuation caused by the three-dimensional strong turbulent flow in the GLSS; the bubble diameter distribution was unimodal with a median diameter (d 50) of 625 μm, and the oxygen absorption efficiency of the GLSS exceeded 70%. A general discrete model was developed for evaluating flow uniformity in parallel multiple GLSSs along a toroidal distributor. The experimental results were in good agreement with the theoretical calculations. The study is important for optimizing the use of gas–liquid contactors in engineering applications.

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