Modelling the effect of methanol, glycol inhibitors and electrolytes on the equilibrium stability of hydrates with the SAFT-VR approach

被引：27

作者：

Dufal, Simon ^{[1
]}

Galindo, Amparo ^{[1
]}

Jackson, George ^{[1
]}

Haslam, Andrew J. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem Engn, Ctr Proc Syst Engn, London SW7 2AZ, England

来源：

MOLECULAR PHYSICS | 2012年 / 110卷 / 11-12期

基金：

英国工程与自然科学研究理事会;

关键词：

hydrates; SAFT; flow assurance; cell theories; electrolytes; ASSOCIATING FLUID THEORY; EQUATION-OF-STATE; PRESSURE PHASE-EQUILIBRIUM; MEAN SPHERICAL MODEL; CARBON-DIOXIDE; DISSOCIATION PRESSURES; HYDROGEN-SULFIDE; GAS-MIXTURES; THERMODYNAMIC PROPERTIES; AQUEOUS-SOLUTIONS;

D O I：

10.1080/00268976.2012.664662

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work we integrate the statistical associating fluid theory for fluids interacting through potentials of variable range (SAFT-VR) into a traditional van der Waals and Platteeuw framework for modelling clathrate hydrates. We incorporate a new water-guest cell potential for the hydrate phase that can be related to the potential adopted in the familiar SAFT-VR equation of state for modelling fluids. We show how the ability of this equation of state to treat a wide range of complex fluids increases the scope of hydrate modelling to incorporate, in a single framework, the presence of various inhibitors (alcohols, glycols) or brines - or, indeed, any fluid for which a model is available (for use within SAFT-VR) or can be conveniently obtained. Agreement with experimental results is good throughout and, in many cases, excellent.

引用

页码：1223 / 1240

页数：18

共 125 条

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