微通道内铜纳米线深度除湿实验研究  

Experimental study on deep dehumidification in microchannels with copper nanowires

作　　者：杨云峰[1] 马学虎[1] 兰忠[1] 郝婷婷[1] YANG Yun-feng;MA Xue-hu;LAN Zhong;HAO Ting-ting(Institute of Chemical Engineering,Liaoning Key Laboratory of Clean Utilization of Chemical Resource,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学化学工程研究所辽宁省化工资源清洁利用重点实验室

出　　处：《高校化学工程学报》2020年第1期44-52,共9页Journal of Chemical Engineering of Chinese Universities

基　　金：国家自然科学基金(51836002,21476037)

摘　　要：深度除湿或微量湿度调控在材料制备加工、化工及微电子等行业都有十分重要的技术需求。利用微通道快速扩散的特点,耦合铜纳米线对低湿空气进一步除湿。对铜纳米线深度除湿过程进行了红外光谱研究,证实了铜纳米线物理吸附深度除湿的微观机理,在此基础上考察了入口湿度、操作温度、流动雷诺数及停留时间对除湿效果的影响,结果表明操作温度及流动雷诺数的降低和停留时间的增加将显著提升铜纳米线的深度除湿能力。利用冷凝相变的方式初步降低气体湿度,构建了“冷凝相变-铜纳米线吸附”的深度除湿系统,通过工艺参数的控制,实现了将相对湿度降至0.1%以下的深度除湿。Deep dehumidification or ultra-low humidity control plays a very important role in material preparation,chemical industry and microelectronics.Efficient diffusion of microchannels was combined with copper nanowires to achieve deep dehumidification.Attenuated total reflection Fourier transform infrared spectrum(ATR-FTIR)was used to study the trapping mechanism of water molecules with copper nanowires under low humidity,which demonstrated that the deep dehumidification was achieved by physisorption.The effects of inlet relative humidity,operating temperature,Re and residence time on dehumidification were investigated,and the results indicate that the reduction of operating temperature and Re,and the increase of residence time can significantly enhance the deep dehumidification ability of copper nanowires.Preliminary dehumidification of moisture was achieved by condensation,and then a condensation-adsorption cascade dehumidification system was constructed.Deep dehumidification with RH<0.1% is achieved by controlling the process parameters.

关 键 词：铜纳米线 微通道 深度除湿 吸附 

分 类 号：TQ028.2[化学工程]