化工新型材料

化工新型材料 ›› 2019, Vol. 47 ›› Issue (6) : 189-192.

科学研究

三元混合熔盐的制备与实验研究

张静, 闫全英, 刘莎

作者信息 +

Preparation and experimental study of ternary mixed molten salt

Zhang Jing, Yan Quanying, Liu Sha

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文章历史 +

Received		Published
2018-04-12		2019-06-20
Issue Date	Revised Date
2019-07-05	2018-04-12

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摘要

制备了由氯化钾、碳酸钠、碳酸钾组成的36种不同比例的混合熔盐,利用差式扫描量热仪对试样的熔点及凝固点进行了实验研究,并对优选出的试样进行了稳定性实验。结果表明:氯化钾成分越小,熔盐熔点越小,三元混合熔盐中可以发生共融的配比试样的熔点为570～580℃,凝固点主要集中在550～570℃之间。实验优选出的试样配比为2∶3∶5(氯化钾∶碳酸钠∶碳酸钾),具有568.9℃的较低熔点和545.3℃的较低凝固点,能够有效避免管路系统的堵塞问题。期望对三元混合熔盐在太阳能领域的应用提供参考和依据。

Abstract

36 kinds of mixed salts made of KCl,Na₂CO₃ and K₂CO₃ were prepared.The melting point and solidification point of the samples were studied by DSC,and the stability of the selected samples were also tested.The results showed that the smaller component of KCl,the smaller melting point of molten salt.The melting point of the samples which melted together was 570～580℃,and the freezing point was mainly between 550 and 570℃.The test ratio of the samples were selected from experiments was 2∶3∶5(KCl∶Na₂CO₃∶K₂CO₃).The samples had a low melting point at 568.9℃ and a low freezing point at 545.3℃,which can effectively avoid the blockage of piping system.The research results will provide reference and basis for the application of ternary mixed molten salt in solar energy field.

关键词

三元混合熔盐 / 相变材料 / 熔点 / 凝固点 / 稳定性

Key words

ternary mixed molten salt / phase change material / melting point / solidification point / stability

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三元混合熔盐的制备与实验研究[J]. 化工新型材料, 2019, 47(6): 189-192 DOI:

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