Dependance of naphthenic acid corrosion of SA106B on temperature and turbulence

2nd International Conference on New Material and Chemical Industry

材料科学;化学工业

Shi, Y.F.^1 ; Zheng, Q.K.^1 ; Liu, J.^1 ; Zhang, L.B.^2 ; Pan, Z.W.^1 ; Rao, S.X.^1

School of Mechanical Engineering, Anhui University of Technology, Maanshan

243002, China^1

Huai Hai Industry Group Co. Ltd, Changzhi

046012, China^2

关键词: Average corrosion rates;    Corrosion depth;    Corrosion morphology;    Kinetic mechanism;    Linear relationships;    Naphthenic acid corrosions;    Natural logarithms;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/292/1/012009/pdf
DOI  :  10.1088/1757-899X/292/1/012009

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Analysis about the kinetic mechanism of Naphthenic Acid Corrosion (NAC) indicated that the natural logarithm of corrosion rate (lnr) was proportional to negative reciprocal of temperature(-1/T,K), linear regression on the corrosion data in API581 and experiments both proved the linear relationship between lnr-(-1/T,K) which could be applied to predicate the average corrosion rate under different temperature. Corrosion morphology observations proved the influence of turbulence on NAC, measurements on the maximum corrosion depth in different turbulence area indicated that in 7.5% turbulence area the corrosion depth could be 2-3 times of the corrosion depth in 2% turbulence area, existence of turbulence could lead to serious local NAC.