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Liquid degassing using fine droplets and micro bubbles Open Access


Other title
Hydrogen sulfide
Liquid sulfur
Type of item
Degree grantor
University of Alberta
Author or creator
Ji, Yiming
Supervisor and department
Xu, Zhenghe (Chemical and Materials Engineering)
Tan, Zhongchao (University of Waterloo)
Examining committee member and department
Tan, Zhongchao (University of Waterloo)
Xu, Zhenghe (Chemical and Materials Engineering)
Gupta, Rajender (Chemical and Materials Engineering)
Department of Chemical and Materials Engineering

Date accepted
Graduation date
Master of Science
Degree level
This project was initiated to study the H2S removal process from liquid sulfur and later extended to generic liquid degassing scenarios. Enersul HyspecTM Degassing Process was first field tested so that comparison could be made with new units to be engineered. Two new degassing units were modelled and lab-tested. The first one used fine poly-dispersed droplets, and the other added micro bubbles to the traditional approach of mechanical agitation. A single unit using one of the degassing techniques could achieve >90% efficiencies in a cost-effective manner. Higher degassing requirements can be met by operating multiple units in series. Degassing using mono-dispersed droplets was also studied to provide a better understanding of the contributing parameters for the poly-dispersed droplet system. Linear correlations of the Sherwood number in relation to the Peclet number were derived. Finally, kinetic parameters, the diffusion coefficient and reaction rate constants of H2S in liquid sulphur, were determined.
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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