Graphite dust deposition in the HTR-10 steam generator--颗粒学报PARTICUOLOGY

Peng, W., Zhen, Y., Yang, X., & Yu, S. (2013). Graphite dust deposition in the HTR-10 steam generator. Particuology, 11(5), 533–539. https://doi.org/10.1016/j.partic.2013.01.005

Graphite dust deposition in the HTR-10 steam generator

Wei Peng^*, Yanan Zhen, Xiaoyong Yang, Suyuan Yu

Institute of Nuclear and New Energy Technology of Tsinghua University, The Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Beijing 100084, China

10.1016/j.partic.2013.01.005

Volume 11, Issue 5, October 2013, Pages 533-539

Received 19 September 2012, Revised 11 December 2012, Accepted 12 January 2013, Available online 22 May 2013.

E-mail: pengwei@tsinghua.edu.cn

Highlights

• Both thermophoretic and turbulent deposition of graphite dust are studied in steam generator.

• Thermophoretic deposition is the main mechanism for particles less than 3 μm.

• Turbulent deposition is the main mechanism for particle larger than 4 μm.

Abstract

Graphite dust has an important effect on the safe operation of a high-temperature gas-cooled reactor (HTR). The present study analyzes temperature and flow field distributions in the HTR-10 steam generator. The temperature and flow field distributions are then used to study thermophoretic deposition and turbulent deposition. The results show that as the dust diameter increases, the thermophoretic deposition decreases, while the turbulent deposition first decreases and then increases. The thermophoretic deposition is higher at higher reactor powers, with turbulent deposition growing more rapidly at higher reactor power. For small particles, the thermophoretic deposition effect is greater than the turbulent deposition effect, while for large particles, the turbulent deposition effect is dominant.

Graphical abstract

Keywords

Graphite dust; High-temperature gas-cooled reactor; Steam generator; Deposition

文章导读