熔盐冷冻壁应用中关键工艺影响因素研究
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，而冷冻壁厚度的稳定控制是干法处理流程应用冷冻壁技术实现处理工艺目的的关键。基于白行研制的冷冻壁实验装置，模拟了干法处理中熔盐冷冻壁的应用工况，考察了导热油进口温度、熔盐初始温度、加热器功率、冷冻壁初始厚度对冷冻壁厚度变化的影响，得到了各个因素的影响规律，并总结了最佳的应用工艺条件。利用热流量的变化分析了冷冻壁厚度变化的原因：热流量越大，冷冻壁厚度减小量越大，达到平衡时，热流量越大，冷冻壁平衡厚度越小。通过实验数据拟合得到了线热流密度与冷冻壁平衡厚度的关系式，平均相对误差11．2...
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| Published in: | 核技术 Vol. 39; no. 8; pp. 53 - 59 |
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| Main Author: | |
| Format: | Journal Article |
| Language: | Chinese |
| Published: |
中国科学院上海应用物理研究所嘉定园区 上海 201800
2016
中国科学院核辐射与核能技术重点实验室 上海 201800 |
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | 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，而冷冻壁厚度的稳定控制是干法处理流程应用冷冻壁技术实现处理工艺目的的关键。基于白行研制的冷冻壁实验装置，模拟了干法处理中熔盐冷冻壁的应用工况，考察了导热油进口温度、熔盐初始温度、加热器功率、冷冻壁初始厚度对冷冻壁厚度变化的影响，得到了各个因素的影响规律，并总结了最佳的应用工艺条件。利用热流量的变化分析了冷冻壁厚度变化的原因：热流量越大，冷冻壁厚度减小量越大，达到平衡时，热流量越大，冷冻壁平衡厚度越小。通过实验数据拟合得到了线热流密度与冷冻壁平衡厚度的关系式，平均相对误差11．2％。 |
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| Bibliography: | Frozen wall, Dry reprocessing, Molten salt reactor 31-1342/TL Background： During dry reprocessing of spent nuclear fuel in the molten salt reactor, the processing equipment is confronted with serious material corrosion problems. The molten salt frozen-wall technique has been proposed as an effective method to protect the equipment from chemical corrosion whilst stability of frozen wall thickness is the key to success in the application of frozen wall technique for dry reprocessing. Purpose： This paper aims to study the influence of key factors in the application of molten salt frozen wall. Methods： Based on the homemade experimental apparatus of frozen wall, the application of molten salt frozen wall during dry reprocessing was simulated. The influences of inlet temperature of oil, initial temperature of molten salt, heater power and initial thickness of frozen wall on the change of frozen wall in the process were analyzed, as well as the reasons behind the change of the thickness of frozen wall via the change |
| ISSN: | 0253-3219 |
| DOI: | 10.11889/j.0253-3219.2016.hjs.39.080602 |