超高比表面积活性炭上天然气脱附性能研究  

Natural Gas Desorption Performance on Activated Carbon with Super-high Specific Surface Area

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 [2]中国科学院成都有机化学研究所

出　　处：《天然气技术》2008年第1期61-63,共3页NATURAL GAS TECHNOLOGY

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,考察了影响超高比表面积活性炭上天然气脱附性能的几种因素。结果表明,高比表面积、大的中孔孔容以及科学有效的成型方式是吸附存储天然气用活性炭所需具备的。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。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:△n(%)/△T=0.4%。Taking the activated carbon with super-high specific surface area and the natural gas as an adsorbent and an adsorbing medium, our research explores some impacts on gas desorption performance on activated carbon with super-high specific area. Results indicate that some conditions of high specific surface area, large meso pore volume and effective prototyping pattern are necessary for activated carbon to absorb storage gas. For activated carbon with super-high specific area, its gas desorption rate is in proportion to storage pressure; and pressure effect is stronger in low pressure zone whereas the effect becomes weaker in high pressure zone. In addition, gas desorption rate is in inverse proportion to storage temperature; and temperature effect is weaker in low pressure zone whereas the effect increases in high pressure zone. A linear relationship exists between desorption rate and storage temperature under 3.40 MPa, Δ n ( % ) /Δ T = 0.4 %.

关 键 词：超高比表面积活性炭 脱附量 天然气 吸附剂 压力 温度 

分 类 号：TE82[石油与天然气工程—油气储运工程]