Numerical analysis and experimental research on heat transfer equilibrium state of molten salt frozen wall

Bo SUN; Jinhao ZHOU; Qiang DOU; Weiqing HU; Qingnuan LI

doi:10.11889/j.0253-3219.2018.hjs.41.060601

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Numerical analysis and experimental research on heat transfer equilibrium state of molten salt frozen wall

NUCLEAR ENERGY SCIENCE AND ENGINEERING | 更新时间：2021-05-19

- Numerical analysis and experimental research on heat transfer equilibrium state of molten salt frozen wall
- NUCLEAR TECHNIQUES Vol. 41, Issue 6, Article number: 060601(2018)
- 作者机构：
  
  1.中国科学院上海应用物理研究所嘉定园区上海 201800
  2.中国科学院核辐射与核能技术重点实验室上海 201800
  3.中国科学院大学北京 100049
- 作者简介：
- 基金信息：
  
  the Strategic Pilot Science and Technology Project of Chinese Academy of Sciences
- DOI：10.11889/j.0253-3219.2018.hjs.41.060601
  CLC： TL3
- Received：19 May 2017，
  
  Revised：28 September 2017，
  
  Published：10 June 2018
- 稿件说明：
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Bo SUN, Jinhao ZHOU, Qiang DOU, et al. Numerical analysis and experimental research on heat transfer equilibrium state of molten salt frozen wall[J]. Nuclear techniques, 2018, 41(6): 060601
DOI：

Bo SUN, Jinhao ZHOU, Qiang DOU, et al. Numerical analysis and experimental research on heat transfer equilibrium state of molten salt frozen wall[J]. Nuclear techniques, 2018, 41(6): 060601 DOI： 10.11889/j.0253-3219.2018.hjs.41.060601.

摘要

在熔盐堆燃料干法处理流程中，处理设备面临着严重的材质腐蚀问题。熔盐冷冻壁技术被视为保护相关设备耐受化学腐蚀的有效方法。熔盐冷冻壁厚度及温度场分布对防护效果及相关干法工艺参数有重要影响，在中心冷却式冷冻壁实验装置上采用FLiNaK熔盐介质开展了冷冻壁维持的实验研究，采用中心冷棒空气冷却的方式得到了不同壁温下冷冻壁的厚度范围及反应釜内温度场分布。结合数值模拟计算了冷冻壁的传热平衡工况，并与实验值进行对比和分析，得到了较为适宜的冷冻壁厚度的调节工况。冷冻壁厚度控制工艺和釜内温度场分布可为冷冻壁工艺容器的设计提供参考。

Abstract

Background

The molten salt frozen-wall technique is effective to protect the equipment involved during dry reprocessing of spent nuclear fuel in the molten salt reactor from chemical corrosion (serious corrosion).

Purpose

The thickness of frozen wall and the temperature distribution of the molten salt have a great influence on the protective effect and related dry processing parameters.

Methods

Based on the central cooled experimental apparatus of frozen wall

the maintenance of the frozen wall was carried out using FLiNaK molten salt medium.

Results

The thickness of the frozen wall and the distribution of temperature in reactor were obtained by the method of air cooling in the center of the cylinder. The heat transfer equilibrium condition of the frozen wall was calculated by numerical simulation

the computed results agreed well with the experimental results.

Conclusion

The experimental conditions for suitable thickness of frozen wall were obtained. The control technology of the frozen wall thickness and temperature field distribution can provide reference for the design of vessel with frozen wall.

关键词

Keywords

references

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Related Author

Bo SUN

Jinhao ZHOU

Changfeng SHE

Qiang DOU

Dewu LONG

Weiqing HU

Qingnuan LI

YANG Zhen

Related Institution

Shanghai Institute of Applied Physics, Chinese Academy of Sciences

North-Western China Regional Office of Nuclear and Radiation Safety Inspection, National Nuclear Safety Administration

North-Western China Regional Office of Nuclear and Radiation Saftety Inspection, National Nuclear Safety Administration

ShanghaiTech University

Chengdu University of Technology

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