Document Type : Research Paper
Authors
1
Department of Chemical Engineering, Om.C., Islamic Azad University, Omidiyeh, Iran
2
Department of Chemical Engineering, Om.C., Islamic Azad University, Omidiyeh, Iran.
3
Department of Chemical Engineering, Mahs.C., Islamic Azad University, Mahshahr, Iran
10.22050/ijogst.2025.523830.1741
Abstract
Understanding gas hydrate formation conditions is crucial for designing natural gas transmission pipelines. These compounds are studied from both thermodynamic and kinetic perspectives. Despite significant advances in the thermodynamic aspect of hydrates, kinetic investigations still demand further research. Accordingly, in order to determine the equilibrium conditions of natural gas hydrate formation, six independent experiments were conducted using natural gas samples from the NF unit of the Bandar Imam Petrochemical Complex. The tests were carried out in a fixed-volume reactor at temperatures of 278.3, 278.6, 284.8, 290.3, 279.3, and 280.6 K, and pressures of 37.8, 19.3, 28.4, 52.2, 32.7, and 16.2 bar, respectively. The experimental results showed that the mass transfer coefficients were 0.343, 0.236, 0.200, 0.314, 0.297, and 0.166 m/s, while the molecular diffusion coefficients were 2.5968 ×10^(-9), 6.2866×10^(-9), 3.3931×10^(-9), 1.49×10^(-9), 4.28×10^(-9), and 7.42×10^(-9) m²/s, respectively. These findings indicate that an increase in reactor temperature leads to a decrease in mass transfer coefficient and an increase in molecular diffusion coefficient, whereas an increase in pressure results in a rise in mass transfer coefficient and a decrease in molecular diffusion coefficient. These trends are consistent with established empirical correlations
Keywords
Subjects
