PREDICTIVE MODEL FOR CO-2 CORROSION ENGINEERING IN WET NATURAL-GAS PIPELINES

被引：236

作者：

DEWAARD, C ^{[1
]}

LOTZ, U ^{[1
]}

MILLIAMS, DE ^{[1
]}

机构：

[1] SHELL INT PETR MAATSCHAPPIJ BV,2501 AN THE HAGUE,NETHERLANDS

来源：

CORROSION | 1991年 / 47卷 / 12期

关键词：

CARBON DIOXIDE; WET GAS; CONDENSATION; IRON CARBONATE; GLYCOL; CORROSION MODEL;

D O I：

10.5006/1.3585212

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Starting from a "worst case" corrosion rate prediction with the deWaard-Milliams equation, correction factors can be applied to quantify the influence of environmental parameters and corrosion product scale formed under various conditions. Equations are proposed for each factor. A low-temperature scale formed in condensing water can cause a reduction in the top-of-the-line corrosion rate in pipelines. At higher temperatures, a more protective scale forms even under high liquid flow rates. The decrease of corrosion rates caused by dissolved Fe is accounted for with a pH correction factor. The effect of the presence of a liquid hydrocarbon phase is included. Equations are presented that enable the effect of glycol injection on corrosion to be calculated along the length of a pipeline. Combinations of effects in the model are discussed.

引用

页码：976 / 985

页数：10

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