天然气在超高比表面积活性炭上脱附性能的研究  

Natural Gas Desorption Performances on the Activated Carbon of Super-high Specific Surface

作　　者：孙玉恒[1] 蒋毅[2] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074 [2]中国科学院成都有机化学研究所,四川成都610041

出　　处：《石油天然气学报》2008年第3期154-156,共3页Journal of Oil and Gas Technology

基　　金：重庆市科技成果孵化基金项目(002-7)

摘　　要：以超高比表面积活性炭为吸附剂,以天然气为吸附介质,研究了不同存储压力、不同存储温度下天然气在超高比表面积活性炭上的脱附性能。结果表明,超高比表面积活性炭的天然气脱附量与存储压力呈正比关系,在低压区,压力影响较强,在高压区,其影响变弱;与压缩存储相比,超高比表面积活性炭上单位体积的天然气脱附量显著提高,其增加比ΔV(%)与存储压力P之间存在幂函数关系:ΔV(%)=A×P-(1/b);天然气脱附量与存储温度呈反比关系,在低压区,温度影响较弱,在高压区,温度影响增强;在3.40MPa下,天然气脱附量与存储温度之间存在线性关系:Δn(%)/ΔT=0.4%。Super-high specific surface activated carbon was used as natural gas adsorbent,the natural gas desorption performances were investigated under different storage pressures and temperatures.The results show that natural gas desorption amount increases rapidly with the increase of pressure at low pressure area and increases slowly at high pressure area.Compared with the compressed storage,the natural gas desorption amount in unit volume on the super-high specific surface activated carbon adsorbent raises obviously.There is a function between the increased rate of the desorption amount ΔV and storage pressure P,namely,ΔV(%)=A×P-(1/b).the natural gas desorption amount decreases evidently with the increasing of temperature,and the variation of the natural gas desorption amount Δn and the variation of temperature ΔT abide to the linear equation:Δn(%)/ΔT =0.4%.

关 键 词：天然气储存 吸附剂 活性炭 气体吸附 吸附量 压力 温度 

分 类 号：TE821[石油与天然气工程—油气储运工程]