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- Title
Hydrodynamics study of the modified rotating disc contactor for CO2 absorption from natural gas using emulsion liquid membrane.
- Authors
Bhatti, Inamullah; Bhutto, Abdul Waheed; Qureshi, Khadija; Kamarudin, Khairul Sozana Nor; Bazmi, Aqeel Ahmed; Ahmad, Faizan
- Abstract
This study modified the rotating disc contactor (RDC) structure to optimize its performance for CO 2 separation from natural gas feed using stable emulsion liquid membrane (ELM). Based on parametric study of absorption of CO 2 from natural gas feed into ELM, the mass transfer behavior in the RDC system was optimized. Rotor diameter, stator inner diameter, and minimum free area of RDC were modified to achieve maximum contact between dispersed liquid phase and gas feed phase, which was necessary to achieve maximum mass transfer. The problem of rupture of the emulsion droplet due to pressure created by direct dispersion of gas at the bottom of conventional RDC extraction system was addressed by adding an impeller at the bottom compartment of RDC. The impeller provided continuous mixing of emulsion and a gas sparger was fitted along the impeller's side that maintained the dispersed aqueous phase miscible in system. The hydrodynamic behavior of a modified RDC was optimized for CO 2 absorption from natural gas in ELM, which indicated that modified design dimensions can provide a maximum liquid–gas contact. Beside the concentration of CO 2 in natural gas feed, it was observed that the speed of RDC and run time significantly influence CO 2 absorption from natural gas using ELM. When all the parameters optimized for CO 2 absorption from natural gas feed this study is useful in extending the application of RDC in liquid–gas system. In this study, the use of ELM in RDC can be effective for CO 2 when applied under proper conditions.
- Subjects
HYDRODYNAMICS; ROTATING discs (Engineering); ABSORPTION; NATURAL gas; LIQUID membranes; EMULSIONS
- Publication
Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers Part A, 2016, Vol 111, p465
- ISSN
0263-8762
- Publication type
Article
- DOI
10.1016/j.cherd.2016.05.029