Phase equilibrium measurements and advanced modelling for optimising liquefied natural gas production

Corey James Baker

doi:10.26182/5bc411e7ccc0d

Phase equilibrium measurements and advanced modelling for optimising liquefied natural gas production

Corey James Baker

School of Engineering

Research output: Thesis › Doctoral Thesis

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Abstract

The liquefied natural gas (LNG) industry utilises process simulators for plant design and optimisation. Unfortunately, their predictions are known to become increasingly inaccurate with increasing pressure and decreasing temperature. Improved phase equilibrium predictions to determine the amounts of vapour, liquid and (unwanted) solids present at these conditions are needed. This thesis presents new data and improved models for phase equilibrium in mixtures and conditions relevant to LNG production. The models are implemented within a new software tool "ThermoFAST" which improved vapour-liquid and solid equilibrium predictions for multicomponent systems by factors of 1.9 and 6.9, respectively, relative to standard industry tools.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	May, Eric, Supervisor Hughes, Thomas, Supervisor Johns, Michael, Supervisor
Thesis sponsors	Australian Government Research Training Program
Award date	16 Sept 2018
DOIs	https://doi.org/10.26182/5bc411e7ccc0d
Publication status	Unpublished - 2018

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THESIS - DOCTOR OF PHILOSOPHY - BAKER Corey James - 2018
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Cite this

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AB - The liquefied natural gas (LNG) industry utilises process simulators for plant design and optimisation. Unfortunately, their predictions are known to become increasingly inaccurate with increasing pressure and decreasing temperature. Improved phase equilibrium predictions to determine the amounts of vapour, liquid and (unwanted) solids present at these conditions are needed. This thesis presents new data and improved models for phase equilibrium in mixtures and conditions relevant to LNG production. The models are implemented within a new software tool "ThermoFAST" which improved vapour-liquid and solid equilibrium predictions for multicomponent systems by factors of 1.9 and 6.9, respectively, relative to standard industry tools.

KW - Liquefied natural gas

KW - Solid-Fluid Equilibrium

KW - Vabour-Liquid Equilibrium

KW - Thermodynamic Modelling

KW - Solid Retrograde Behaviour

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DO - 10.26182/5bc411e7ccc0d

M3 - Doctoral Thesis

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Phase equilibrium measurements and advanced modelling for optimising liquefied natural gas production

Abstract

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