Design of a stirred batch reactor with scale-up to ensure efficient degumming process at a larger scale

Kurniawan, Aditya and Supit, Syailendra and Riyadi, Fatimah Azizah and Alam, Md Zahangir and Muharam, Yuswan (2024) Design of a stirred batch reactor with scale-up to ensure efficient degumming process at a larger scale. Results in Engineering, 23. pp. 1-12. E-ISSN 2590-1230

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Abstract

This study investigates the design of a stirred batch reactor with scale-up for the degumming of crude palm oil (CPO) using phosphoric acid (H3PO4). Laboratory-scale experiments were conducted in a triple-neck round vessel, followed by a scale-up to a larger-scale flat-bottom stirred tank reactor. Traditional scale-up methods using geometric similarity criteria are ineffective for reactors with different geometries; hence, this work introduces an improved approach using degumming efficiency, measured by gum concentration, as the similarity criterion to design the reactor. Computational Fluid Dynamics (CFD) was employed to model the velocity distribution and mass transfer processes, predicting gum concentration evolution through gum mass balances in the oil and aqueous phases. The simulation results showed that maintaining a minimum impeller speed of 93 rpm in the larger reactor effectively reproduced the best degumming efficiency observed in the laboratory reactor at 500 rpm and 60 ◦C. A strong correlation (R2 = 0.963) was found between the modeled and empirical Sherwood numbers, indicating successful scale-up. This research demonstrates that degumming efficiency in a laboratory triple-neck round vessel can be numerically reproduced in a larger flat-bottom stirred tank reactor, providing valuable insights into the hydrodynamic characteristics unique to each geometry and marking a pivotal step in reactor scale-up methodologies.

Item Type:	Article (Journal)
Uncontrolled Keywords:	Non-geometric scale-up, Computational fluid dynamics, Mass transfer coefficient, Degumming process, Stirred batch reactor
Subjects:	T Technology > TP Chemical technology > TP155 Chemical engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Biotechnology Engineering Kulliyyah of Engineering
Depositing User:	Dr. Md. Zahangir Alam
Date Deposited:	23 Oct 2024 14:33
Last Modified:	23 Oct 2024 14:33
URI:	http://irep.iium.edu.my/id/eprint/115224

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