A more precise method to evaluate kinetic leakage of anion exchange resin used in condensate polishing of power plant

doi:10.1016/j.cjche.2021.03.035

中国化学工程学报 ›› 2021, Vol. 40 ›› Issue (12): 160-166.DOI: 10.1016/j.cjche.2021.03.035

• Process Systems Engineering and Process Safety • 上一篇下一篇

A more precise method to evaluate kinetic leakage of anion exchange resin used in condensate polishing of power plant

Tianping Wang, Xuxiang Jia, Chunsong Ye

Department of Water Quality Engineering, School of Power & Mechanical Engineering, Wuhan University, Wuhan 430072, China

收稿日期:2020-06-19 修回日期:2021-01-01 出版日期:2021-12-28 发布日期:2022-01-14
通讯作者: Chunsong Ye,E-mail:csye@whu.edu.cn

A more precise method to evaluate kinetic leakage of anion exchange resin used in condensate polishing of power plant

Tianping Wang, Xuxiang Jia, Chunsong Ye

Department of Water Quality Engineering, School of Power & Mechanical Engineering, Wuhan University, Wuhan 430072, China

Received:2020-06-19 Revised:2021-01-01 Online:2021-12-28 Published:2022-01-14
Contact: Chunsong Ye,E-mail:csye@whu.edu.cn

摘要/Abstract

摘要： Sulfate mass transfer coefficient (MTC) is a sensitive parameter to evaluate the kinetic leakage of anion exchange resin used in condensate polishing system of thermal and nuclear power plant. However, a sufficiently precise determination method has not been well established. In this paper, the final expression of sulfate MTC derived based on plug flow reactor model is the same as Harries’ model, which is widely acknowledged in this field. In the determining system we constructed, in-situ calibration of the concentration of sulfate and its cation conductivity was conducted and sulfate MTCs of four typical strongly basic anion exchange resin samples were determined. The systematic error is 8.26% and the calibrated curve used for quantifying sulfate is obtained. The repeatability and reproducibility standard deviation are 0.05×10^-4 m·s^-1 and 0.07×10^-4 m·s^-1 respectively, which are lower than previous works. By controlling test condition accurately, this study has developed a more precise sulfate MTC determining method. This method provides a basis for further research.

关键词: Sulfate mass transfer coefficient (MTC), Anion exchange resin, Kinetic leakage, Condensate polishing, Power plant

Abstract: Sulfate mass transfer coefficient (MTC) is a sensitive parameter to evaluate the kinetic leakage of anion exchange resin used in condensate polishing system of thermal and nuclear power plant. However, a sufficiently precise determination method has not been well established. In this paper, the final expression of sulfate MTC derived based on plug flow reactor model is the same as Harries’ model, which is widely acknowledged in this field. In the determining system we constructed, in-situ calibration of the concentration of sulfate and its cation conductivity was conducted and sulfate MTCs of four typical strongly basic anion exchange resin samples were determined. The systematic error is 8.26% and the calibrated curve used for quantifying sulfate is obtained. The repeatability and reproducibility standard deviation are 0.05×10^-4 m·s^-1 and 0.07×10^-4 m·s^-1 respectively, which are lower than previous works. By controlling test condition accurately, this study has developed a more precise sulfate MTC determining method. This method provides a basis for further research.

Key words: Sulfate mass transfer coefficient (MTC), Anion exchange resin, Kinetic leakage, Condensate polishing, Power plant

Tianping Wang, Xuxiang Jia, Chunsong Ye. A more precise method to evaluate kinetic leakage of anion exchange resin used in condensate polishing of power plant[J]. 中国化学工程学报, 2021, 40(12): 160-166.

Tianping Wang, Xuxiang Jia, Chunsong Ye. A more precise method to evaluate kinetic leakage of anion exchange resin used in condensate polishing of power plant[J]. Chinese Journal of Chemical Engineering, 2021, 40(12): 160-166.

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A more precise method to evaluate kinetic leakage of anion exchange resin used in condensate polishing of power plant

A more precise method to evaluate kinetic leakage of anion exchange resin used in condensate polishing of power plant

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