基于碳分子筛的变压吸附分离N_2/CH_4混合气的试验
|
摘要
采用BELSORP-max型BET分析仪测试绘制了298K、0~100KPa下N2、CH4纯组分在碳分子筛上的吸附等温线;并使用单塔变压吸附装置测试绘制了N2/CH4混合气中CH4的动态吸附穿透曲线;考察了在碳分子筛上吸附压力和停留时间对N2/CH4混合气分离的影响.结果表明:吸附压力设为1.2MPa、停留时间735s是比较合适的吸附分离条件;在吸附初期,CH4优于N2先穿透床层.
The adsorption isotherms of N2 and CH4pure components on carbon molecular sieve at 298 K,0~100KPa was measured by BELSORP-max BET analyzer.The breakthrough curves of N2/CH4 mixed gas in fixed adsorption bed were measured by single tower pressure swing adsorption apparatus.The effect of the separation of N2/CH4 mixture on the carbon molecular sieve was studied.The effects of N2/CH4 mixed gas separation were discussed at different adsorption pressures and retention times on carbon molecular sieve.The results show that:the suitable adsorption pressure and retention time was1.2MPa and 735 srespectively and that CH4 was superior to N2 to penetrate the bed in the early adsorption.
The adsorption isotherms of N2 and CH4pure components on carbon molecular sieve at 298 K,0~100KPa was measured by BELSORP-max BET analyzer.The breakthrough curves of N2/CH4 mixed gas in fixed adsorption bed were measured by single tower pressure swing adsorption apparatus.The effect of the separation of N2/CH4 mixture on the carbon molecular sieve was studied.The effects of N2/CH4 mixed gas separation were discussed at different adsorption pressures and retention times on carbon molecular sieve.The results show that:the suitable adsorption pressure and retention time was1.2MPa and 735 srespectively and that CH4 was superior to N2 to penetrate the bed in the early adsorption.
引文
[1]刘应书,郭广栋,李永玲,等.变压吸附浓缩煤层气吸附剂的选择实验[J].矿业安全与环保,2010,37(4):4-7.
[2]马东祝,李坚,王洪明,等.Sr改性椰壳炭吸附分离CH4/N2的试验研究[J].安全与环境学报,2014,14(5):170-173.
[3]聂李红,徐绍平,苏艳敏,等.低浓度煤层气提纯的研究现状[J].化工进展,2008,27(10):1 505-1 506.
[4]辜敏,鲜学福,张代均,等.变压吸附技术分离CH4/N2气体混合物[J].煤炭学报,2002,27(2):197-198.
[5]章川泉,林文胜,顾安忠,等.CH4/N2混合气体在CMS上的低温吸附分离实验研究[J].低温技术,2008(5):9-12.
[6]慈红英,李明,卢少瑜,等.CH4/N2在炭分子筛上的吸附动力学[J].煤炭学报,2010,35(2):316-319.
[7]张正旺,杨华伟,张东辉,等.新型真空变压吸附法模拟分离N2/CH4/CO2[J].现代化工,2014,34(3):147-151.
[8]马正飞,丁艳宾,赵春风,等.变压吸附法净化含N2气体中微量CO的脱附过程[J].南京工业大学学报,2009,32(4):6-11.
[9]史乃弘.CMS CH4浓缩甲烷碳分子筛吸附剂[J].天然气化工,2014(39):44-47.
[10]郭璞,李明.煤层气中CH4/N2分离工艺研究进展[J].化工进展,2008,27(7):963-982.
[11]A I FatehiI,K F Loughlin,M M Hassan.Separation of Methane-nitrogen Mixtures by Pressure Swing Adsorption Using a Carbon Molecular Sieve[J].Gas Separation&Purification,1995,9(3):199-204.
[12]西南化工研究设计院.变压吸附法富集煤矿瓦斯气中甲烷:中国,85103557[P].1986.
[13]C Simone,A G Carlos.Separation of CH4/CO2/N2 Mixtures by Layered Pressure Swing Adsorption for Upgrade of Natural Gas[J].Chemical Engineering Science,2006,61:3 893-3 906.
[14]P Tremblay,M M Savard.Gas Permeability,Diffusivity and Solubility of Nitrogen,Helium,Methane,Carbon Dioxide and Formaldehyde in Dense Polymeric Membranes Using a New On-line Permeation Apparatus[J].Journal of Membrane Science,2006,282(1-2):245-256.
[15]席芳,林文胜,顾安忠.CH4/N2混合气在炭分子筛上的变压吸附分离[J].煤炭学报,2011,36(6):1 032-1 035.
[16]席芳,林文胜,顾安忠,等.炭分子筛吸附分离CH4/N2混合物的研究进展[J].低温与超导,2010,38(9):41-44.
[17]王骏成,胡明振,孙林兵,等.碳分子筛变压吸附提纯沼气的性能[J].化工进展,2015,34(9):3 452-3 486.
[18]T Gao,W S Lin,A Z Gu,et al.Coalbed Methane Liquefaction Adopting a Nitrogen Expansion Process with Propane Pre-cooling[J].Applied Energy,2010,87(7):2 142-2 147.
[19]T Gao,W S Lin,A Z Gu,et al.Optimization of Coalbed Methane Liquefaction Process Adopting Mixed Refrigerant Cycle with Propane Precooling[J].Journal of Chemical Engineering of Japan,2009,42(12):893-901.
[20]A Fatehi.Separation of Methane Nitrogen Mixtures by Pressure Swing Adsorption Using a Carbon Molecular Sieve[J].Gas Separation&Purification,1995,31(9):199-204.
[21]辜敏,鲜学福.提高煤矿抽放煤层气甲烷浓度的变压吸附技术的理论研究[J].天然气化工,2006,31(6):6-10.
[2]马东祝,李坚,王洪明,等.Sr改性椰壳炭吸附分离CH4/N2的试验研究[J].安全与环境学报,2014,14(5):170-173.
[3]聂李红,徐绍平,苏艳敏,等.低浓度煤层气提纯的研究现状[J].化工进展,2008,27(10):1 505-1 506.
[4]辜敏,鲜学福,张代均,等.变压吸附技术分离CH4/N2气体混合物[J].煤炭学报,2002,27(2):197-198.
[5]章川泉,林文胜,顾安忠,等.CH4/N2混合气体在CMS上的低温吸附分离实验研究[J].低温技术,2008(5):9-12.
[6]慈红英,李明,卢少瑜,等.CH4/N2在炭分子筛上的吸附动力学[J].煤炭学报,2010,35(2):316-319.
[7]张正旺,杨华伟,张东辉,等.新型真空变压吸附法模拟分离N2/CH4/CO2[J].现代化工,2014,34(3):147-151.
[8]马正飞,丁艳宾,赵春风,等.变压吸附法净化含N2气体中微量CO的脱附过程[J].南京工业大学学报,2009,32(4):6-11.
[9]史乃弘.CMS CH4浓缩甲烷碳分子筛吸附剂[J].天然气化工,2014(39):44-47.
[10]郭璞,李明.煤层气中CH4/N2分离工艺研究进展[J].化工进展,2008,27(7):963-982.
[11]A I FatehiI,K F Loughlin,M M Hassan.Separation of Methane-nitrogen Mixtures by Pressure Swing Adsorption Using a Carbon Molecular Sieve[J].Gas Separation&Purification,1995,9(3):199-204.
[12]西南化工研究设计院.变压吸附法富集煤矿瓦斯气中甲烷:中国,85103557[P].1986.
[13]C Simone,A G Carlos.Separation of CH4/CO2/N2 Mixtures by Layered Pressure Swing Adsorption for Upgrade of Natural Gas[J].Chemical Engineering Science,2006,61:3 893-3 906.
[14]P Tremblay,M M Savard.Gas Permeability,Diffusivity and Solubility of Nitrogen,Helium,Methane,Carbon Dioxide and Formaldehyde in Dense Polymeric Membranes Using a New On-line Permeation Apparatus[J].Journal of Membrane Science,2006,282(1-2):245-256.
[15]席芳,林文胜,顾安忠.CH4/N2混合气在炭分子筛上的变压吸附分离[J].煤炭学报,2011,36(6):1 032-1 035.
[16]席芳,林文胜,顾安忠,等.炭分子筛吸附分离CH4/N2混合物的研究进展[J].低温与超导,2010,38(9):41-44.
[17]王骏成,胡明振,孙林兵,等.碳分子筛变压吸附提纯沼气的性能[J].化工进展,2015,34(9):3 452-3 486.
[18]T Gao,W S Lin,A Z Gu,et al.Coalbed Methane Liquefaction Adopting a Nitrogen Expansion Process with Propane Pre-cooling[J].Applied Energy,2010,87(7):2 142-2 147.
[19]T Gao,W S Lin,A Z Gu,et al.Optimization of Coalbed Methane Liquefaction Process Adopting Mixed Refrigerant Cycle with Propane Precooling[J].Journal of Chemical Engineering of Japan,2009,42(12):893-901.
[20]A Fatehi.Separation of Methane Nitrogen Mixtures by Pressure Swing Adsorption Using a Carbon Molecular Sieve[J].Gas Separation&Purification,1995,31(9):199-204.
[21]辜敏,鲜学福.提高煤矿抽放煤层气甲烷浓度的变压吸附技术的理论研究[J].天然气化工,2006,31(6):6-10.