Investigating and Modeling the Thermo-Dynamic Impact of Sodium Chloride and Sodium Sulfate on Prevention of the Formation of Methane Hydrate

توضیحات

Abstract
Devising methods to prevent hydrate formation is of the important issues in natural gas industry. Since a great deal of money is annually spent  n using hydrate inhibitors, identification of new inhibitors with higher degrees of efficacy is economically justifiable.The present article attempts to  nvestigate two compounds of NaCl and Na2SO4 as inhibitors of hydrate methane’s formation so as to respond to “what is the inhibitive thermo- ynamic impact of electrolyte compounds of NaCl and Na2SO4 on the formation of methane hydrate?”. To do so, this study not only measures the equilibrium temperature and pressure of methane hydrate formation in the presence of electrolyte solutions of NaCl and Na2SO4 and   mpares the results obtained with the state lacking such inhibitors, but it also assesses the regression and mathematical modeling are utilized  within a basic virtual environment in order to propose a model for prediction of thermo-dynamic equilibrium temperature and pressure of  methane hydrate formation.

Introduction

Gas hydrate is a compound, which is formed in the presence of water and the guest molecule under the condition of low temperature and high  pressure. After being formed, this stable and tough compound leads to creation of a blockage in natural gas pipelines . In 1810 Devi, an English  chemist, for the first time found out the formation of gas chloral hydrate while cooling an aqueous solution of chlorine in the temperature of 10  degrees centigrade. In 1934, Homer and Schmitt found that the hydrate formed created a blockage in gas pipelines. Thenceforth, Diatom and Frost were of the early scientists who conducted and reported on empirical experiments on hydrate formation . More serious studies on these molecules were carried out regarding their crystal structure, properties, and formation conditions as well as ways to inhibit their formation . To  predict the pressure and temperature conditions under which hydrate forms, two major methods, known as Gas Gravity and K-factor, were  proposed by Katz et al. as manual ways to do so. Gas Gravity was presented by Katz et al. . Furthermore, another set of manual calculations has been presented by Bialy and Vichert that is of less utilization compared to the said two methods. First model to calculate hydrate formation  wasproposed by Van der Waals and Platteeuw

Year: 2013

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

By : M.Manteghian  ,H.Ahmadi

File Information: English Language/ 9 Page / size: 0.99 KB

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سال : 1392

ناشر : دومین کنفرانس ملی هیدرات گاز (NICGH)

کاری از : م. مجتهدان، حسن احمدی

اطلاعات فایل : زبان انگلیسی / 9صفحه / حجم : KB 0.99

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