Experimental and modeling study of the kinetics of methane hydrate formation and dissociation

doi:10.1016/j.cjche.2020.08.045

摘要/Abstract

摘要： In this work, several experiments were conducted at isobaric and isothermal condition in a CSTR reactor to study the kinetics of methane hydrate formation and dissociation. Experiments were performed at five temperatures and three pressure levels (corresponding to equilibrium pressure). Methane hydrate formation and dissociation rates were modeled using mass transfer limited kinetic models and mass transfer coefficients for both formation and dissociation were calculated. Comparison of results, shows that mass transfer coefficients for methane hydrate dissociation are one order greater than formation conditions. Mass transfer coefficients were correlated by polynomials as relations of pressure and temperature. The results and the method can be applied for prediction of methane production from naturally occurring methane hydrate deposits.

关键词: Methane hydrate, Kinetics, Formation, Dissociation, Mass transfer

Abstract: In this work, several experiments were conducted at isobaric and isothermal condition in a CSTR reactor to study the kinetics of methane hydrate formation and dissociation. Experiments were performed at five temperatures and three pressure levels (corresponding to equilibrium pressure). Methane hydrate formation and dissociation rates were modeled using mass transfer limited kinetic models and mass transfer coefficients for both formation and dissociation were calculated. Comparison of results, shows that mass transfer coefficients for methane hydrate dissociation are one order greater than formation conditions. Mass transfer coefficients were correlated by polynomials as relations of pressure and temperature. The results and the method can be applied for prediction of methane production from naturally occurring methane hydrate deposits.

Key words: Methane hydrate, Kinetics, Formation, Dissociation, Mass transfer

Vafa Feyzi, Vahid Mohebbi. Experimental and modeling study of the kinetics of methane hydrate formation and dissociation[J]. 中国化学工程学报, 2021, 29(1): 365-374.

Vafa Feyzi, Vahid Mohebbi. Experimental and modeling study of the kinetics of methane hydrate formation and dissociation[J]. Chinese Journal of Chemical Engineering, 2021, 29(1): 365-374.

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