Global Journal of Engineering and Technology Research (GJETR) · Research article · Open access
Mathematical Modelling and Dynamic Simulation of the Ethan Separation Unit in Natural Gas Liquefaction Plant
Ghazwan Hani Hussien, Basma Mohammed Uthman
30 December 2025 · Vol. 1, Issue 4, pp. 210-222
DOI: 10.65150/EP-gjetr/V1E4/2025-07
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What is this article about?
Separation is one of the most important processes in all chemical industries, including the petroleum industry. Ethane gas separation is the simplest example of a gas mixture separation process.
Article at a glance
- Published
- 30 December 2025
- Volume / issue / pages
- Vol. 1, Issue 4, pp. 210-222
- ISSN
- 3051-3782 (online) · 3051-3774 (print)
- Licence
- CC BY 4.0 — free to read and reuse with attribution
- Peer review
- Double-blind, at least two independent reviewers
- Publisher
- EP Journals Group
Abstract
Separation is one of the most important processes in all chemical industries, including the petroleum industry. Ethane gas separation is the simplest example of a gas mixture separation process. A mathematical model and dynamic simulation of the ethane gas separation unit at a natural gas liquefaction (NGL) plant were developed, focusing on developing an accurate mathematical representation that relies solely on temperature as the main dynamic variable, without introducing flow rate or pressure effects. This allows for a flexible and realistic simulation of the system's behaviour. The mathematical model was built using first-order differential equations that describe the temporal relationship between the temperatures at the inlets and outlets of the system components using matrix algebra. Actual operational data recorded from the work site were used, providing the model with a high degree of reliability and validity in simulating the system's actual performance under both steady-state and unsteady-state operating conditions. The simulation was implemented using the MATLAB/Simulink environment to represent the thermal relationships and analyze the dynamic interaction between the system units. The model results demonstrate good agreement with practical applications, making it possible to provide a ready-to-use simulation as a testbed for advanced process monitoring or operational decision support. Through system simulation, the model's ability to accurately and realistically represent system behaviour was demonstrated, matching the actual operational behavior with the help of gain factors. This work represents a qualitative contribution to the field of modelling industrial thermal systems and paves the way for further development toward building more comprehensive models for gas processing units.
Keywords: Modelling, Simulation, Ethane, natural gas liquefaction, Separation, MATLAB
Cite this article
Ghazwan Hani Hussien, & Basma Mohammed Uthman (2025). Mathematical Modelling and Dynamic Simulation of the Ethan Separation Unit in Natural Gas Liquefaction Plant. Global Journal of Engineering and Technology Research, 1(4), 210-222. https://doi.org/10.65150/EP-gjetr/V1E4/2025-07
@article{Ghazwan2025,
title = {Mathematical Modelling and Dynamic Simulation of the Ethan Separation Unit in Natural Gas Liquefaction Plant},
author = {Ghazwan Hani Hussien and Basma Mohammed Uthman},
journal = {Global Journal of Engineering and Technology Research},
year = {2025},
volume = {1},
number = {4},
pages = {210-222},
doi = {10.65150/EP-gjetr/V1E4/2025-07},
url = {https://doi.org/10.65150/EP-gjetr/V1E4/2025-07}
}Questions about this article
Who wrote this article?
Ghazwan Hani Hussien, Basma Mohammed Uthman.
Where and when was it published?
In Global Journal of Engineering and Technology Research, Volume 1, Issue 4, pages 210-222, published by EP Journals Group on 30 December 2025.
Is this article free to read?
Yes. It is open access under a Creative Commons Attribution 4.0 (CC BY 4.0) licence, so anyone can read, share and reuse it with attribution.
What is the DOI of this article?
10.65150/EP-gjetr/V1E4/2025-07 (https://doi.org/10.65150/EP-gjetr/V1E4/2025-07).
How do I cite this article?
APA: Ghazwan Hani Hussien, & Basma Mohammed Uthman (2025). Mathematical Modelling and Dynamic Simulation of the Ethan Separation Unit in Natural Gas Liquefaction Plant. Global Journal of Engineering and Technology Research, 1(4), 210-222. https://doi.org/10.65150/EP-gjetr/V1E4/2025-07
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