|
| Performance of Zinc Alloy High Temperature Anode in FPSO Process Water Tank |
| Received:March 24, 2023 Revised:June 26, 2023 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2023.08.004 |
| KeyWord:zinc alloy high temperature anode process water tank electrochemical performance catholic protection |
| Author | Institution |
| CHEN Ya-lin |
Qingdao NCS Testing and Protection Technology Co., Ltd., Shandong Qingdao , China |
| ZHENG Zhi-jian |
Qingdao NCS Testing and Protection Technology Co., Ltd., Shandong Qingdao , China |
| WANG Qi |
Marine Science Research Institute of Shandong Province, Shandong Qingdao |
| HUANG Wei-guo |
Tianjin Branch of CNOOC China Co., Ltd., Tianjin , China |
| ZHUANG Ze-jing |
Qingdao NCS Testing and Protection Technology Co., Ltd., Shandong Qingdao , China |
| YIN Peng-fei |
Qingdao NCS Testing and Protection Technology Co., Ltd., Shandong Qingdao , China |
| ZHANG Jie |
Qingdao NCS Testing and Protection Technology Co., Ltd., Shandong Qingdao , China |
|
| Hits: |
| Download times: |
| Abstract: |
| The work aims to study the electrochemical performance of zinc alloy sacrificial anode provided by shipowner in simulated process water tanks. According to the electrochemical test method in NACE TM 0190-2012, the working potential and electrochemical capacity of the zinc alloy anode were tested in different simulated environments. Combined with the potentiodynamic polarization test of the bulkhead material, the electrochemical performance of the anode in the process water tank, and whether it met the requirements of cathodic protection were evaluated. The working potential and electrochemical capacity of the anode samples in 55 ℃ simulated solution were satisfactory. All the indexes met the requirements of NACE TM 0190-2012 for zinc alloy anode in normal temperature environment. When the test temperature was 80 ℃, the electrochemical capacity of the samples decreased slightly, and the working potential were significantly positively shifted. The environmental temperature also had an obvious effect on the bulkhead material. At high temperature, the self-corrosion potential of bulkhead samples were negatively shifted, and the self-corrosion current were increased. In 55 ℃ process water tank environment, the zinc alloy anode meets the need of cathodic protection of bulkhead. However, at the extreme high temperature of 80 ℃, the anode is not suitable for long-term service. There is a risk of insufficient protection. In addition, in practice, regular monitoring of the coating status and cathodic protection potential is recommended. |
| Close |
|
|
|