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Simulation of liquid-gas for cpo-methanol mixing process in bubble column reactor

Saleh, Mohd Saiful (2015) Simulation of liquid-gas for cpo-methanol mixing process in bubble column reactor. Masters thesis, Universiti Tun Hussein Onn Malaysia.

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Abstract

The computational fluid dynamics (CFD) highly concern in understanding the complexity hydrodynamics of bubble column. Research on superheated methanol very important in investigate influence towards biodiesel production. The aim of simulation is to find the effect of various size of holes distribution and velocities superheated methanol towards crude palm oil (CPO) in bubble column reactor to predict the effect towards reaction rate between this materials. Superheated methanol gas was dispersed through bubble column reactor contains liquid crude palm oil. This process occurs at atmospheric pressure and temperature of 290°C. This analysis used ANSYS FLUENT fluid flow to simulate and compute the mathematical problem. According to the result from turbulent transient analysis of Volume of Fluid model (VOF), the value contact surface area and gas holdup is highly indicated at model C which is this model provide an open area ratio A=4.76% and at 6 m/s of velocity. Thus, even the percentage of an open area ratio was higher than others model, but with systematic arrangement of distance holes distribution, it will evade the bubble coalescence further increase the value of contact surface area and gas holdup. However, the investigated result also show that the maximum value of turbulent dissipation rate was indicated at model B compare with others model which is indicate higher contact time between methanol and oil. Further research with variety of parameters and others method is capable in detail prediction of superheated methanol hydrodynamics behaviour.

Item Type: Thesis (Masters)
Subjects: Q Science > QD Chemistry
Depositing User: Mrs Hasliza Hamdan
Date Deposited: 08 May 2016 06:50
Last Modified: 08 May 2016 06:50
URI: http://eprints.uthm.edu.my/id/eprint/7762
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