Experimental Investigation of Liquid-liquid Extraction and Gas-liquid-liquid Flow in a Microchannel

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Alikhani Hosein; Sattari Najafabadi Mehdi; Haghshenasfard Masoud

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Journal Paper

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Journal: PETROLEUM RESEARCH Year:2022 | Volume:32 | Issue:3 Page(s): 131-145

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Information Journal Paper

Title

Experimental Investigation of Liquid-liquid Extraction and Gas-liquid-liquid Flow in a Microchannel

Author(s)

Alikhani Hosein | Sattari Najafabadi Mehdi | Haghshenasfard Masoud | Issue Writer Certificate

Keywords

Three-phase FlowQ4

Liquid-liquid ExtractionQ4

MicrochannelQ4

Gas PhaseQ4

Mass TransfQ4

Abstract

In this study, solvent extraction during gas-liquid-liquid flow in a Microchannel was investigated. Sodium hydroxide aqueous solution, acetic acid dissolved in n-hexane and nitrogen were employed as the aqueous, organic and gaseous phases, respectively. The Microchannel was made of glass with a cross sectional dimension of 800×700 µm2. In the two-phase mode (without the Gas Phase), the flow regime was slug flow, while in the Three-phase Flow mode, the flow pattern was a double emulsion (gas in organic in water) flow. By increasing the total fluid flow from 0. 005 to 0. 020 mL/s, the overall volumetric Mass Transfer coefficient enhanced on average by 140%. Using the Gas Phase did not always improve the Mass Transfer coefficient in the Microchannel. For example, at a constant liquids flow rate of 0. 005 mL/s, increasing the gas flow rate from 0 to 0. 1 mL/s, deteriorated the Mass Transfer coefficient, however, increasing the gas flow rate up to 0. 2 mL/s led to augmentation of the Mass Transfer coefficient.

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