CO2-CH4 Quest Replacement in Methane Hydrate: Kinetic Study

Publish Year: 1399
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

OGPCONF06_056

تاریخ نمایه سازی: 4 مرداد 1399

Abstract:

In this study a new kinetic model is proposed for CO2-Methane replacement in hydrate structure. The work is a novel method to predict production of naturally occurring methane hydrate deposits and CO2 storage take occur simultaneously. This kinetic model is developed based on the mechanism proposed for replacement in the hydrate structure in the presence of excess water as a slurry phase of methane hydrate. According to this mechanism, partial breakage of methane hydrate cages, methane-CO2 substitution and formation of mixed CO2/CH4 hydrate proceed simultaneously. Pure methane hydrate dissociation, pure CO2 hydrate formation and CO2/CH4 mixed hydrate formation kinetic parameters are evaluated experimentally and applied in the proposed model. Sensitivity analysis on the developed kinetic model indicates that CO2 hydrate formation would be the rate controlling step in CO2-CH4 replacement mechanism.

Authors

Vafa Feyzi

Ahvaz Petroleum Faculty, Petroleum University of Technology (PUT), Ahvaz, Iran

Vahid Mohebbi

Ahvaz Petroleum Faculty, Petroleum University of Technology (PUT), Ahvaz, Iran