Research of Corrosion and Protection on Boiler and Pipelines by Condensing Water

Abstract:

Boiler and pipeline that using steam condensation water will be eroded when the steam condensation water absorb dissolved oxygen and carbon dioxide in the production and recycling process. In order to solve this problem, a preferably management flow and process were developed to slow down the Boiler and pipeline corrosion process by analyzing the microstructure of corrosive Boiler and pipeline with a Electrochemical method. Firstly, rinse the Boiler and pipeline with 5% citric acid at about 90 oC, after that process adding 4~6mg/L anti-filthy corrosion inhibitor to the steam condensation water and adjusting pH at 8.0~9.5 by 30% sodium hydroxide or 50% sulfuric acid. At the same time maintenance water conductivity below 1200μs/cm by discharging condensation water. This method will play an import part in managing Circulating cooling water.

• Periodical: Applied Mechanics and Materials (Volumes 239-240)
• Pages: 1589-1595
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.239-240.1589
• Online since: December 2012
• Authors: Chang Shan Huang, Jin Ying Wu, Hui Wu Xu, Yu Shan Cheng, Min Zhang
• Keywords: Boiler and Pipeline, Condensing Water, Corrosion and Protection, Recycling Use, Scientific Management

References

[1] Daijing Cheng, Yinhe Liu: The steam condensing water recycling and use[M]. Beijing: Chemical industry publishing house, (2007), p.5(in Chinese).

[2] Dianyi Feng, Xiaodong Li: Waste heat boiler maintenance handbook[M]. Beijing: Chemical industry publishing house, (2009), p.117(in Chinese).

[3] Fengping Wang, Wanli Kang: The corrosion electrochemistry principle, the method and apply [M]. Beijing: Chemical industry publishing house, (2008), pp.105-107 (in Chinese).

[4] Xili Chen, Qingchao Xie: Applied Energy Technology, 2007(1), p.44(in Chinese).

[5] Fulian Xue: China Special Equipment Safety, 2005(5), p.60(in Chinese).

[6] Xueyuan Zhang, ChaoDi and Liangcai Lei: The carbon dioxide corrodes and controls[M]. Beijing: Chemical industry publishing house, (2003), p.26(in Chinese).

[7] Gang Wei, Yanhong Xu: Chemical Techno-Economics. Vol. 21(11) (2003) , p.28(in Chinese).

[8] Chunlin Li, Hongwei Yang: Total Corrosion Control. Vol. 19(3)(2005), p.22(in Chinese).

[9] Benxing Zhou: Industry water treatment technology (second edition) [M]. Beijing: Chemical industry publishing house, (2002), p.190, p.467(in Chinese).

[10] Guozhi Qin, Zhiming Tian: Industry clean and application example (second edition) [M]. Beijing: Chemical industry publishing house, (2007), p.29(in Chinese).

[11] TSG G5003-2008, Boiler chemistry clean rule [S](in chinaese).

[12] Changshan Huang, Ming Ding: Heating Ventilating And Air Conditioning, Vol. 36(5)( 2006), p.119(in Chinese).

[13] Zhaoying Dou: Practical chemistry clean technology (second edition)[M]. Beijing: Chemical industry publishing house, (2001), p.37(in Chinese).

[14] Fuchang Chen, Hainan Zheng: Energy Technology, Vol. 27(1)( 2006), p.37 (in Chinese).

[15] Feng Tang, Xianlu Yin, Nianwu Hu: Industrial Boiler, 2008(4), p.32(in Chinese).

[16] Yongtai Sun: Plant Maintenance Engineering, Vol. 19(3)(2009), p.57(in Chinese).

[17] Kangmin Ye: Materials Protection, 1990(1), p.8(in Chinese).

[18] Jing Wang, Bing Tang: Corrosion and protection, 2007(5), p.1(in Chinese).

[19] Ruixuan Han: Water treatment medicinal preparation application handbook[M]. Beijing: Chemical industry publishing house, (2000), p.267(in Chinese).

[20] Changshan Huang, Hongtu Zhang, Jinying Wu: Henan Sscience, 1998(3), p.348(in Chinese).

[21] Changshan Huang, Jinying Wu, Rongjiang Liu: Heating Ventilating And Air Conditioning, 2009(11), p.145(in Chinese).

[22] Changshan Huang, Junqiang Chen, Jinying Wu: Henan Science, 2007(6), p.1040(in Chinese).

[23] Benxing Zhou: In industry cooling aqueous system metal corrosion and protection [M]. Beijing: Chemical industry publishing house, (1995), pp.95-97(in Chinese).