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خانه مقالات-Article مقالات شیمی-Chemistry Articles Kinetic investigation of methane hydrate in the presence of Imidazolium Based Ionic Liquid solutions
Kinetic investigation of methane hydrate in the presence of[taliem.ir]

Kinetic investigation of methane hydrate in the presence of Imidazolium Based Ionic Liquid solutions

رایگان!

Methane hydrate formation experiments in the presence of the various imidazolilium based ionic liquid solutions with 0.5wt% concentration  including 1-buthyl-3-methylimidazolium methyl sulfate ([BMIM][MeSO4]) , 1-ethyl-3-methylimidazolium hydrogen sulfate ([EMIM][HSO4]), 1- ethyl-3-methylimidazolium ethyl sulfate ([EMIM][EtSO4]), 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF4]) and 1-(2- hydroxyethyl)-3-methylimidazolium tetrafluoroborate ([OH-EMIM][BF4]) were conducted in a high pressure reactor at the same temperature. The induction time, gas consumption and temperature were measured.The results of experiments were indicated that [EMIM][EtSO4] and [BMIM][MeSO4] had the kinetic inhibiton effects meanwhile the other ionic liquids could be able to apply as the kinetic promoters

توضیحات محصول

ABSTRACT

Methane hydrate formation experiments in the presence of the various imidazolilium based ionic liquid solutions with 0.5wt% concentration  including 1-buthyl-3-methylimidazolium methyl sulfate ([BMIM][MeSO4]) , 1-ethyl-3-methylimidazolium hydrogen sulfate ([EMIM][HSO4]), 1- ethyl-3-methylimidazolium ethyl sulfate ([EMIM][EtSO4]), 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF4]) and 1-(2- hydroxyethyl)-3-methylimidazolium tetrafluoroborate ([OH-EMIM][BF4]) were conducted in a high pressure reactor at the same temperature. The induction time, gas consumption and temperature were measured.The results of experiments were indicated that [EMIM][EtSO4] and [BMIM][MeSO4] had the kinetic inhibiton effects meanwhile the other ionic liquids could be able to apply as the kinetic promoters

INTRODUCTION

Gas hydrates are ice-like crystalline compounds in which gas molecules with suitable size are trapped inside cages, that forming from water  molecules through hydrogen bonding . Four essential factors are necessary for gas hydrate formation containing gas molecules (guests),  water molecules (hosts), and proper conditions including low temperature/high pressures .The research on gas hydrates have been  performed in two opposite directions . The researchers have focused over the last decade, not only on the inhibition of gas hydrates  formation, which is related to petroleum and gas industries, but also they have studied to find some means for promoting hydrate formation.  The thermodynamic and low dosage kinetic inhibitors are applied to prevent hydrate blockage in pipelines. Although, the thermodynamic  inhibitors including alcohols, glycols and electrolytes effectively cause to inhibit the formation of gas hydrates, but large concentrations are  required (10-50% of the water phase) so that, using of these inhibitors has become more costly . Low dosage kinetic inhibitors (LDHIs)  including anti-agglomerants (AAs) and kinetic hydrate inhibitors (KHIs) as a new group of inhibitors have been proposed to prevent hydrate  formation. They not only do not change the thermodynamic conditions of gas hydrate formation but also they are able to prevent and delay hydrate nucleation and slow the rate of hydrate growth. On the other hand, gas hydrates have been considered recently as a new means for storage and transport of natural gas . By using enough amounts of kinetic or thermodynamic promoters, the mass transfer between gas and water is extended, thus the hydrate formation rate can be efficiently increased.

Year: 2013

Publisher :  2nd National Iranian Conference on Gas Hydrate (NICGH)

By : M. Zare , A. Haghtalab , A. N. Ahmadi , K. Nazari , Ali Mehdizadeh

File Information: English Language/ 10 Page / size: 602 KB

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سال : 1392

ناشر : دومین کنفرانس ملی هیدرات گاز (NICGH)

کاری از : مهدی زارع، احمد حقالاب، علی ناصر احمدی، ناصری، علی مهدی زاده

اطلاعات فایل : زبان انگلیسی / 10 صفحه / حجم : KB 602

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