摘要
碳纳米管具有良好的传热能力,能够迅速转移出水合物生成过程中产生的热量。同时碳纳米管巨大比表面积能为水合物提供更多的成核位点。因此,碳纳米管被广泛应用在水合物技术中以解决水合物生成较慢的问题。本文研究了多壁碳纳米管对CH_4-CO_2-TBAB水合物生成过程的影响。研究表明,在生成水合物的混合气体体系中加入多壁碳纳米管,不同浓度的多壁碳纳米管的存在对混合气体水合物的相平衡曲线均没有影响;但能显著降低生成水合物所需要的诱导时间,且随着碳纳米管浓度的增加,诱导时间逐渐变短;并且生成水合物的气体消耗量增加,并且碳纳米管浓度越大,气体消耗量越大。这说明碳纳米管的加入能增加水合物体系的储气能力。
Carbon nanotubes have good ability to transfer heat and can rapidly transfer heat generated during the hydrate formation process.At the same time,the large surface area of carbon nanotubes can provide more nucleation sites for hydrates.Therefore,carbon nanotubes are widely used in hydrate technology to solve the problem of slow formation of hydrate.This paper studied the effect of multi-walled carbon nanotubes on the formation of CH4-CO2-TBAB hydrate.The result showed that the addition of different concentrations multi-walled carbon nanotubes does not affect the phase balance curve of the mixed gas hydrates.However,it can reduce the induction time for hydrates formation significantly,and the induction time becomes shorter gradually with the increases of carbon nanotubes concentration.Further,the gas consumption of the hydrate formation increases,and the larger the concentration of the carbon nanotubes,the larger the gas consumption.This shows that the addition of carbon nanotubes can increase the gas storage capacity of the hydrate system.
作者
盛淑美
章冶
李栋梁
梁德青
吴小平
SHENG Shu-Mei;ZHANG Ye;LI Dong-Liang;LIANG De-Qing;WU Xiao-Ping(CAS Key Laboratory of Gas Hydrate,Guangzhou 510640,China;Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development,Guangzhou 510640,China;Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China;Guangzhou Center for Gas Hydrate Research,Chinese Academy of Sciences,Guangzhou 510640,China;Nano Science and Technology Institute,University of Science and Technology of China,Suzhou 215123,China;School of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026,China)
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
2019年第1期51-56,共6页
Natural Gas Chemical Industry
基金
国家自然科学基金(51474197
51661165011)
国家重点研发计划项目课题(2016YFC0304002)
关键词
多壁碳纳米管
水合物生成
促进作用
multi-walled carbon nanotubes
hydrates
promotion effect
作者简介
盛淑美(1992-),女,硕士研究生;通讯作者:李栋梁,研究员,Tel:020-87057653,Email:ldl@ms.giec.ac.cn。
