碳纳米管-水合物法储甲烷性能研究  

EXPERIMENTAL INVESTIGATION OF CH_4 ADSORPTION STORAGE BY CARBON NANOTUBES AND HYDRATE METHOD

作　　者：臧小亚[1,2] 梁德青[1] 吴能友[1] 

机构地区：[1]中国科学院广州能源研究所,中科院可再生能源与天然气水合物重点实验室,广东广州510640 [2]中国科学院研究生院,北京100049

出　　处：《工程热物理学报》2010年第5期725-728,共4页Journal of Engineering Thermophysics

基　　金：国家重点基础研究发展计划项目(No.2009CB219504);国家自然科学基金(No.50876107);NSFC-广东联合基金(No.U0933004);中国科学院知识创新工程重要方向项目(No.KGCX2-YW-805)资助

摘　　要：单壁碳纳米管由于其本身的多孔特性能成为甲烷等清洁气体的良载体,同时水合物法储气也是有效安全输运甲烷的新兴技术手段。本文分别研究了单壁碳纳米管干法和水合物法两种方法储存甲烷的过程及机理,并对两种方法储气效果进行了比较。结果表明,单壁碳纳米管在8.9 MPa的压力下,温度为0.5℃时,干法储甲烷的质量分数为2.79%,碳纳米管-水合物法储甲烷的质量分数为5.11%,储气量提高80%;在干法储甲烷的过程中,吸附过程很不稳定,会伴随有脱附现象的产生,而碳纳米管-水合物法储甲烷的过程相对比较稳定。Signal-walled carbon nanotubes（SWNTs） is used for clean gas storage sorbent because of its porosity.Simultaneously,natural gas hydrate storage is also a new effectual way for methane preservation and transportation.Methane gas adsorption process and mechanism about dry SWNTs and wet SWNTs（SWNTs ＋ hydrate method） were both investigated.The results indicate that when temperature was 0.5℃and pressure was 8.9 MPa,the methane gas absorption rate of dry SWNTs and wet SWNTs were 2.79%and 5.11%respectively.The adsorption reaction was not stable in the adsorption process of dry SWNTs.But in the adsorption process of wet SWNTs,there was no desorption accompany with adsorption reaction.

关 键 词：碳纳米管 水合物 甲烷 储气 

分 类 号：TQ013.2[化学工程]