Thermodynamics and Kinetics Study of Gas Hydrates in Presence of Ionic Liquids

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Sahraei, Vahab | 2011

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 41748 (06)
University: Sharif University of Technology
Department: Chemical and Petroleum Engineering
Advisor(s): Ghotbi, Cyrus; Taghikhani, Vahid; Nazari, Khodadad
Abstract:
Gas hydrates are ice-like clathrate compounds. Methane, carbon dioxie and natural gas compounds can form gas hydrate and plug pipelines, in order to preventing of gas hydrate formation, inhibitors like electrolytes are added to the natural gas pipelines. In this work a model proposed to predict the hydrate formation conditions in presence of some inhibitors such as NaCl, KCl, NaBr, KBr, [BMIM][BF4] and [BMIM][Br]. So a new equation of state that can be applied to both electrolyte and associating solutions called GV-SAFT-MSA is developed. Two dialkylimidazolium ionic liquids [BMIM][BF4] and [BMIM][MS] have been investigated for their potential application as novel gas hydrate inhibitors. The predictions of the developed thermodynamic model are compared to the experimental data and the results of our experimental data. Good agreement is observed between the experimental data and the model predictions.
Keywords:
Hydrates ; Electrolyte Solution ; Ionic Liquids ; Experimental Method ; Statistical Assosiating Fluids Theory (SAFT) ; State Equation ; Parrish and Prausnitz Model

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