Corrosion Behavior of Titanium in FGD System

Authors

J-c Lin, Dept. of Machinery, Zhongshan Univ., Taiwan, Taoyuan
T-l Chang, Dept. of Machinery, Zhongshan Univ., Taiwan, Taoyuan
C-t DUNG, Dept. of Machinery, Zhongshan Univ., Taiwan, Taoyuan
S-l Lee, Dept. of Machinery, Zhongshan Univ., Taiwan, Taoyuan
S-d Chyou, Dept. of Machinery, Zhongshan Univ., Taiwan, Taoyuan
S-d Guo, Dept. of Machinery, Zhongshan Univ., Taiwan, Taoyuan

Corresponding Author

C-j Lin

Abstract

In-situ corrosion test of titanium in flue gas desulfurization(FGD) system has been studied. Specimens of commercial Ti alloy have been put in four different locations (i. e , cooler, pre-scruber, absorber and heater) of the FGD system for 271 days. The corrosion rate is very low (i.e.<1 mpy) in all locations. Almost no corrosion can be found in the prescruber(0 mpy), but a sensible corrosion rate is estimated in the heater (0.58 mpy). Examination through SEM, all the specimens are subject to pitting corrosion except those in the prescruber. ESCA analysis indicates that the surface film for the specimen in prescruber is calcium carbonate, but titanium nitrate for the specimen in heater. Cyclic anodic potentiodynamic polarization (CAPP) of titanium in aerated and deaerated green solution provides an interpretation on the corrosion behavior of the titanium in the FGD system.

Keywords

Titanium, Flue gas desulfurization(FGD), Cyclic anodic potentiodynamic polarization(CAPP), ESCA

DOI Link

https://doi.org/10.61558/2993-074X.3251

Publication Date

2001-05-28

Online Available Date

2001-05-28

Revised Date

2001-05-20

Received Date

2001-01-27

Recommended Citation

J-c Lin, T-l Chang, C-t DUNG, S-l Lee, S-d Chyou, S-d Guo. Corrosion Behavior of Titanium in FGD System[J]. Journal of Electrochemistry, 2001 , 7(2): 195-202.
DOI: 10.61558/2993-074X.3251
Available at: https://jelectrochem.xmu.edu.cn/journal/vol7/iss2/13