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关于PVDF@SiAG/PET膜直接接触膜蒸应用的低导热性的研究

Jun Xiang^1,2, Sitong Wang¹, Nailin Chen¹

¹Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-Utilization, College of Chemical Engineering and Material Science, Tianjin University of Science and Technology (TUST), 13th Avenue 29, TEDA, Tianjin 300457, China.

|September 27, 2023

概括

这项研究开发了一个复合膜,使用聚乙烯二化物/聚乙烯甘二甲 (PVDF/PET) 和气凝 (SiAG) 来改善膜蒸. 新的PVDF@SiAG/PET膜显示了提高蒸应用的热效率和分离性能.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
分离技术分离技术

背景情况:

膜蒸 (MD) 需要提高热效率和疏水性,以提高分离性能和减少热损失.
开发先进的膜材料对于优化MD过程至关重要.

研究的目的:

为了创建一个复合膜,提高热效率和水性,用于膜蒸.
研究纳米化二氧化气凝 (SiAG) 在直接接触膜蒸 (DCMD) 中对聚二二化/聚乙烯基醇二甲 (PVDF/PET) 膜的性能的影响.

主要方法:

使用PVDF/PET的非溶剂相感应方法制造了一种复合性疏水/疏水膜.
纳米化气凝 (SiAG) 被纳入复合膜中.
分析了SiAG添加和运行条件对DCMD透流和热效率的影响.

主要成果:

将SiAG添加到PVDF/PET膜中显著提高了热效率和疏水性.
复合PVDF@SiAG/PET膜在DCMD中表现出增强的分离性能.
对蒸发和传热的潜热的分析证实了SiAG结合的好处.

结论:

开发的PVDF@SiAG/PET复合膜具有高热效率和蒸分离应用的巨大潜力.
通过SiAG修改,可以同时提高热效率和疏水性.
这项研究为推进膜蒸技术提供了一个有前途的方法.

关键词:

疏水性/疏水性膜膜是一种低热导电性的热导电性.膜蒸的蒸方式非溶剂诱导分离阶段的非溶剂.氧化气凝是一种氧化气凝.

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