pH prediction in concentrated aqueous solutions under high pressure of acid gases and high temperature

被引：13
作者：
Plennevaux, C. [1 ]
Ferrando, N. [2 ]
Kittel, J.
Fregonese, M. [3 ]
Normand, B. [3 ]
Cassagne, T. [1 ]
Ropital, F.
Bonis, M. [1 ]
机构：
[1] TOTAL, F-64018 Pau, France
[2] IFP Energies Nouvelles, F-69360 Solaize, France
[3] INSA Lyon, MATEIS, CNRS UMR 5510, F-69621 Villeurbanne, France
来源：
CORROSION SCIENCE | 2013年 / 73卷
关键词：
Acid solutions; Modeling studies; Thermodynamic diagrams; CARBON-DIOXIDE CORROSION; VAPOR-LIQUID; MILD-STEEL; MINERAL SOLUBILITIES; INTERNAL CORROSION; MECHANISTIC MODEL; HYDROGEN-SULFIDE; SODIUM-CHLORIDE; CO2; SOLUBILITY; NATURAL-WATERS;
D O I：
10.1016/j.corsci.2013.04.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An extended model for pH prediction in oil and gas environments has been developed. Accurate pH calculations for high pressure and high temperature applications depends mainly on CO2 and H2S partial pressures, the ionic strength, the chemical composition of the solution, and the temperature. Accounting for the non-ideal behaviors of liquid and gas phases allows pH calculations up to 200 degrees C, 2000 bar total pressure, and ionic strengths up to 5 mol L-1. The results are consistent with experimental measurements and with other models reported in the literature. (C) 2013 Elsevier Ltd. All rights reserved.
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页码：143 / 149
页数：7
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