A cage-based hydrate model for industrially relevant systems in offshore energy

David Zhu

doi:10.26182/vc62-y171

A cage-based hydrate model for industrially relevant systems in offshore energy

David Zhu

School of Engineering

Research output: Thesis › Doctoral Thesis

31 Downloads (Pure)

Abstract

Gas hydrates are ice-like cages formed by water molecules that encase small gas molecules. This thesis introduces the Cage Specific Hydrate Equilibrium Electrolyte (CaSH-e) model, a significant improvement in gas hydrate stability predictions. The model uses fewer, more physically justified parameters, with a reduction of 40% compared to existing models while retaining accuracy in predicting the hydrate equilibrium temperature. The model can predict hydrate equilibria of complex gas mixtures and inhibitors like salts and heavy hydrocarbons. This development enhances hydrate management strategies in industrial applications, impacting the safety and design of energy and CO2 transport systems.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Aman, Zach, Supervisor May, Eric, Supervisor Norris, Bruce, Supervisor
Thesis sponsors	Australian Government Research Training Program
Award date	10 Mar 2025
DOIs	https://doi.org/10.26182/vc62-y171
Publication status	Unpublished - 2025

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10.26182/vc62-y171

THESIS - DOCTOR OF PHILOSOPHY - ZHU David Jinher - 2024_
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3 Article

Phase Equilibria and Nucleation Rates of Mixed Methane-Tetrahydrofuran Gas Hydrates for Energy Storage
Mahant, B., Barwood, M. T. J., Zhu, D. J., Li, C., Kumar, R. & May, E. F., 27 Feb 2025, In: Energy and Fuels. 39, 8, p. 3859-3867 9 p.
Research output: Contribution to journal › Article › peer-review
Cage-Specific Hydrate Equilibrium Electrolyte Model
Zhu, D. J., May, P. M., Norris, B. W. E., Aman, Z. M. & May, E. F., 4 Apr 2024, In: Energy and Fuels. 38, 7, p. 5714-5728 15 p.
Research output: Contribution to journal › Article › peer-review
5 Citations (Scopus)
A cage-specific hydrate equilibrium model for robust predictions of industrially-relevant mixtures
Zhu, D. J., Norris, B. W. E., Aman, Z. M. & May, E. F., 31 May 2023, In: Physical Chemistry Chemical Physics. 25, 25, p. 16807-16823 17 p.
Research output: Contribution to journal › Article › peer-review
7 Citations (Scopus)

Cite this

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title = "A cage-based hydrate model for industrially relevant systems in offshore energy",

abstract = "Gas hydrates are ice-like cages formed by water molecules that encase small gas molecules. This thesis introduces the Cage Specific Hydrate Equilibrium Electrolyte (CaSH-e) model, a significant improvement in gas hydrate stability predictions. The model uses fewer, more physically justified parameters, with a reduction of 40% compared to existing models while retaining accuracy in predicting the hydrate equilibrium temperature. The model can predict hydrate equilibria of complex gas mixtures and inhibitors like salts and heavy hydrocarbons. This development enhances hydrate management strategies in industrial applications, impacting the safety and design of energy and CO2 transport systems.",

keywords = "Gas hydrates, hermodynamics, Natural gas, modelling, Industry, Offshore energy",

author = "David Zhu",

year = "2025",

doi = "10.26182/vc62-y171",

language = "English",

school = "The University of Western Australia",

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AU - Zhu, David

PY - 2025

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AB - Gas hydrates are ice-like cages formed by water molecules that encase small gas molecules. This thesis introduces the Cage Specific Hydrate Equilibrium Electrolyte (CaSH-e) model, a significant improvement in gas hydrate stability predictions. The model uses fewer, more physically justified parameters, with a reduction of 40% compared to existing models while retaining accuracy in predicting the hydrate equilibrium temperature. The model can predict hydrate equilibria of complex gas mixtures and inhibitors like salts and heavy hydrocarbons. This development enhances hydrate management strategies in industrial applications, impacting the safety and design of energy and CO2 transport systems.

KW - Gas hydrates

KW - hermodynamics

KW - Natural gas

KW - modelling

KW - Industry

KW - Offshore energy

U2 - 10.26182/vc62-y171

DO - 10.26182/vc62-y171

M3 - Doctoral Thesis

ER -

A cage-based hydrate model for industrially relevant systems in offshore energy

Abstract

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Research output

Phase Equilibria and Nucleation Rates of Mixed Methane-Tetrahydrofuran Gas Hydrates for Energy Storage

Cage-Specific Hydrate Equilibrium Electrolyte Model

A cage-specific hydrate equilibrium model for robust predictions of industrially-relevant mixtures

Cite this