Effect of Salt Deposits on Corrosion Behavior of Ni-Based Alloys in Supercritical Water Oxidation of High-Salinity Organic Wastewater

被引：13

作者：

Li, Yanhui ^{[1
]}

Wang, Shuzhong ^{[1
]}

Yang, Jianqiao ^{[1
]}

Zhang, Yan ^{[2
]}

Xu, Donghai ^{[1
]}

Guo, Yang ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Energy & Power Engn, Key Lab Thermo Fluid Sci & Engn MOE, 28 Xianning West Rd, Xian 710049, Shaanxi, Peoples R China

[2] Changan Univ, Shaanxi Key Lab Land Consolidat, Sch Earth Sci & Resources, Middle Sect Nan Erhuan Rd, Xian 710064, Shaanxi, Peoples R China

来源：

JOURNAL OF ENVIRONMENTAL ENGINEERING | 2019年 / 145卷 / 11期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Corrosion; Nickel-based alloy; Salt deposit; Supercritical water oxidation; High-salinity organic wastewater; HIGH-TEMPERATURE; SODIUM-CHLORIDE; STAINLESS-STEEL; SOLUBILITY; NICKEL; C-276;

D O I：

10.1061/(ASCE)EE.1943-7870.0001554

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this study, the corrosion behavior of nickel-based alloys 625, 825, and 800 with a salt deposit layer was investigated in supercritical water containing a dissolved oxygen of 5,000 ppm at 400 degrees C. Scanning electron microscopy, energy-dispersive spectroscopy, atomic force microscope, X-ray diffraction, and laser Raman spectroscopy were used to investigate the morphologies and compositions of samples. Control experiments were performed to investigate the effects of a salt deposit layer. The presence of one salt deposit layer on the sample surface resulted in the occurrence of an acidic and oxidizing microenvironment between the alloy surface and the salt deposit layer, evidently enhancing the corrosion of nickel-based alloys. A comparison of the corrosion resistances among Alloys 825, 800, and 625 indicated that Alloy 825 is the best. Additionally, a suggestion for materials selection in supercritical water oxidation plants for high-salinity organic wastewater treatment was proposed.

引用

页数：9

共 44 条

[41] Effect of ammonium chloride on corrosion behavior of Ni-based alloys and stainless steel in supercritical water gasification process [J].

Yang, Jianqiao ;

Wang, Shuzhong ;

Xu, Donghai ;

Guo, Yang ;

Yang, Chuang ;

Li, Yanhui .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2017, 42 (31) :19788-19797

[42] Supercritical water oxidation treatment of textile sludge [J].

Zhang, Jie ;

Wang, Shuzhong ;

Li, Yanhui ;

Lu, Jinling ;

Chen, Senlin ;

Luo, XingQi .

ENVIRONMENTAL TECHNOLOGY, 2017, 38 (15) :1949-1960

[43] Corrosion behavior of Hastelloy C-276 in supercritical water [J].

Zhang, Qiang ;

Tang, Rui ;

Yin, Kaiju ;

Luo, Xin ;

Zhang, Lefu .

CORROSION SCIENCE, 2009, 51 (09) :2092-2097

[44] A Review of Challenges and Recent Progress in Supercritical Water Oxidation of Wastewater [J].

Zhang, Sijie ;

Zhang, Zhonghua ;

Zhao, Rui ;

Gu, Junjie ;

Liu, Jie ;

Ormeci, Banu ;

Zhang, Jinli .

CHEMICAL ENGINEERING COMMUNICATIONS, 2017, 204 (02) :265-282

← 1 2 3 4 5 →