胡憧憬^1,2， 孙 泽^1,2*， 黄 龙^2,3， 张海军^3,4， 宋兴福^1,2， 于建国^1,2

1. 华东理工大学资源与环境工程学院，上海 2002372. 国家盐湖资源综合利用工程技术研究中心，上海 2002373. 青海盐湖工业股份有限公司，青海 格尔木 8160004. 青海盐湖硝酸盐业股份有限公司，青海 格尔木 816000

收稿日期:2018-03-09修回日期:2018-04-11出版日期:2018-12-22发布日期:2018-12-19
通讯作者:孙泽

基金资助:熔融态相变储能硝酸盐体系中杂质离子竞争结晶、迁移规律研究

Analysis on thermal stability of molten nitrates at high temperatures

Chongjing HU^1,2, Ze SUN^1,2*, Long HUANG^2,3, Haijun ZHANG^3,4, Xingfu SONG^1,2, Jianguo YU^1,2

1. School of Resource and Environment Engineering, East China University of Science and Technology, Shanghai 200237, China2. National Engineering Research Center for Integrated Utilization of Salt Lake Resource, Shanghai 200237, China 3. Qinghai Salt Lake Industry Group Co., Ltd., Golmud, Qinghai 816000, China4. Qinghai Salt Lake Nitrates Industry Group Co., Ltd., Golmud, Qinghai 816000, China

Received:2018-03-09Revised:2018-04-11Online:2018-12-22Published:2018-12-19
Contact:Ze Sun

摘要/Abstract

摘要： 研究了商业化储能二元混合硝酸熔盐Solar salt (60% NaNO3?40% KNO3)的热稳定性和恒温热稳定性，采用热重法分析了其热分解温度，通过恒温实验考察了处于开放空气气氛中的NaNO3, KNO3和Solar salt在不同温度下的热稳定性，研究了NaNO3和KNO3在Solar salt高温不稳定性中的作用. 结果表明，大于500℃时温度越高，熔盐越不稳定，相同温度下不稳定程度NaNO3>Solar salt>KNO3. 温度升高，分解产物NO2?平衡含量增大而达到平衡的时间缩短，O2?含量很低. Solar salt中硝酸盐热分解和挥发的质量损失比接近1:1，NaNO3是造成体系热分解的主要原因，而KNO3起到抗挥发的作用.

引用本文

胡憧憬 孙泽 黄龙 张海军 宋兴福 于建国. 储能硝酸熔盐的热稳定性分析[J]. 过程工程学报, 2018, 18(6): 1315-1322.
Chongjing HU Ze SUN Long HUANG Haijun ZHANG Xingfu SONG Jianguo YU. Analysis on thermal stability of molten nitrates at high temperatures[J]. Chin. J. Process Eng., 2018, 18(6): 1315-1322.

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