化工学报 ›› 2021, Vol. 72 ›› Issue (S1): 554-559.doi: 10.11949/0438-1157.20201576
LUO Weili(),WANG Wenwen,PAN Quanwen(
),GE Tianshu,WANG Ruzhu
摘要:
研制了一种以活性碳纤维毡为基质、氯化锂(LiCl)为吸湿盐的复合吸附剂,并辅以硅溶胶进行固化成型。该复合吸附剂可用于以水为吸附质的热化学吸附储热系统,并对其微观结构、吸附性能和储热性能进行了表征研究。制备了不同含盐量的复合吸附剂样品,并根据样品的溶液泄漏现象,确定ACFLi30为最佳样品。通过试验测量,获得ACFLi30样品的热导率、孔比表面积、孔体积和孔径等参数。并对多种温湿度工况下的平衡和动态吸附性能进行测试,研究了不同温湿度条件下样品的吸附特性。结果表明样品的吸水量可达1.1 g/g(20℃、75% RH)。利用同步热分析仪测试了复合吸附剂的储热密度,ACFLi30的质量和体积储热密度分别达到1.08 kW·h/kg和588.2 kW·h/m3。与膨胀蛭石和活性氧化铝等基质相比,活性碳纤维毡基质在体积储热密度更具优势。
中图分类号:
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