碳基吸附剂提纯CH_4/CO_2混合气中CH_4的研究  

Purification of CH_4 from CH_4/CO_2 Mixture Using Carbon-based Adsorbents

作　　者：杨海燕[1,2] 李文哲[1] 高海云[1] 

机构地区：[1]东北农业大学工程学院,哈尔滨150030 [2]东北农业大学理学院,哈尔滨150030

出　　处：《农业机械学报》2013年第5期154-157,共4页Transactions of the Chinese Society for Agricultural Machinery

基　　金：'十二五'国家科技支撑计划资助项目(2011BAD15B00);科技部国际科技合作项目(2010DFB60680-1)

摘　　要：在常温(25℃)低压(0.2 MPa)下,测定市售碳基吸附剂(活性炭和碳分子筛)对CH4与CO2混合气的动态吸附分离性能,并与13X分子筛性能进行比较。结果表明:碳分子筛能较好地分离CH4与CO2,但分离选择性不如13X分子筛。然而碳分子筛可以通过抽真空法或惰气吹扫法完全再生,这一性能优越于13X分子筛。碳质吸附剂的再生耗能低于以13X为代表的沸石分子筛,更有利于成为变压吸附法净化沼气的吸附剂。The removal of CO2 from a CO2/CH4 mixture using commercial carbon-based adsorbents was researched at ambient temperature （25℃） under low pressure （0.2 MPa）. The performance in separating CO2 from its mixture with CH4 using carbon-based adsorbents was compared with 13X molecular sieve. The results indicated carbon molecular sieve could separate the mixture well but its selectivity was lower than 13X molecular sieve. However, carbon molecular sieve could be well regenerated, which was much better than 13X molecular sieve. These results suggested that carbon-based molecular sieve might be more suitable than zeolites for CO2 removal from biogas in a pressure swing adsorption cycle.

关 键 词：沼气 变压吸附 吸附剂 再生 

分 类 号：S216.4[农业科学—农业机械化工程] X701[农业科学—农业工程]