Hydrodynamic Studies of Two-Phase Liquid-Liquid Slug Flow in Circular Microchannel with T-Junction

Widianto, Aloisiyus Yuli and Elfa, Caroline and Valentino, Reynaldo (2022) Hydrodynamic Studies of Two-Phase Liquid-Liquid Slug Flow in Circular Microchannel with T-Junction. In: International Seminar on Chemical Engineering Soehadi Reksowardojo (STKSR) 2022, August 9-10, Ambon.

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Abstract

Microreactors have a wide application, especially in heterogeneous reactions limited by mass and or heat transfer. In many chemical reactions, microreactors show good performance for obtaining a high yield, selectivity, and conversion up to 100%, which is not easy to realize using conventional reactors. The excellent performance of the microreactor is a result of the high stability of two phase flow, namely slug flow pattern. A comprehensive study of slug flow characteristics inside the microchannel is needed to have a good performance. For that reason, the present work focused on the study of slug flow characteristics and its stability by using a circular microtube with 0.5; 0.8, and 1 mm inside diameter, and the 2-liquid phase consisted of aquades-kerosene and aquades-ethyl acetate with aquades as a dispersed phase and kerosene or ethyl acetate as a continuous phase. These liquids represent two liquid mixtures with different physical and chemical properties, which significantly influence the formation of 2-phase flow patterns in a microtube. Variables used in the experiment were temperature, channel diameter, and volumetric flow rate. Observation results show that the slug flow pattern was found at the ratio of the volumetric flow rate of disperse phase to the continuous phase (Qd/Qc) is 1; 1.4; 1.8; and 2.2. The slug flow formed at a flow rate of 70 ml/h for both the dispersed phase and the continuous phase (Qd/Qc = 1) had the most stable droplet length and the distance of consecutive droplets. Increasing Qd/Qc ratio increases the droplet length formed, and in the range of discharge used, the change in inside tube diameter from 0.5 to 1 mm does not change the flow pattern model, but it affects the slug length.

Item Type:	Conference or Workshop Item (Speech)
Uncontrolled Keywords:	microchannel, two-phase, flow pattern, stability, slug flow
Subjects:	T Technology > TP Chemical technology
Divisions:	Faculty of Engineering > Department of Chemical Engineering
Depositing User:	Aloysius Yuli W, 61141
Date Deposited:	03 May 2023 06:13
Last Modified:	19 May 2023 06:11
URI:	http://repository.ubaya.ac.id/id/eprint/44048

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