制备了微纤包覆活性炭复合材料,研究了甲苯在结构化固定床上的吸附动力学.通过在固定床的进口端和出口端分别装填颗粒活性炭(1.08 mm)和微纤复合材料形成结构化固定床,测定了甲苯在结构化固定床上的吸附透过曲线,并与颗粒活性炭固定床的实验结果进行比较,探讨了床层高度和气体流量对甲苯在结构化固定床上的吸附透过曲线的影响.结果表明,在相同的条件下,甲苯在结构化固定床层上的透过时间较在颗粒活性炭固定床上的透过时间延长了约20 min,床层利用率提高了12％.甲苯在结构化固定床上的吸附透过时间随着床层高度降低或气体流量增加而缩短.同时,采用Yoon-Nelson模型对甲苯在结构化固定床和颗粒活性炭固定床上的吸附透过曲线进行线性回归分析,实验结果与Yoon-Nelson模型能较好地吻合.
参考文献
| [1] | Lillo-Rodenas M A,Cazorla-Amoros D,Linares-Solano A .Behaviour of activated carbons with different pore size distributions and surface oxygen groups for benzene and toluene adsorption at low concentrations[J].Carbon,2005,43(8):1758,2005. |
| [2] | Qu F,Zhu L Z,Yang K .Adsorption behaviors of volatile organic compounds (VOCs) on porous clay heterostructures (PCH)[J].J Hazard Mater,2009,170(1):7,2009. |
| [3] | Ruhl M J .Recover VOCs via adsorption on activated carbon[J].Chem Eng Prog,1993,89(7):37,1993. |
| [4] | Tatarchuk B J,Rose M F,Krishnagopalan G A.Preparation of mixed fiber composite structures:US,5304330[P].1994-04-19,1994. |
| [5] | Tatarchuk B J,Chang B K,Lu Y,et al.Microfibrous entrapped small reactive particulates and fibers for high contacting efficiency removal of contaminants from gaseous or liquid streams:US,0169820 A1[P].2005-08-04,2005. |
| [6] | Yang H Y,Cahela D R,Tatarchuk B J .A study of kinetic effects due to using microfibrous entrapped zinc oxide sorbents for hydrogen sulfide removal[J].Chem Eng Sci,2008,63(10):2707,2008. |
| [7] | Chang B K,Lu Y,Yang H Y,et al .Facile regeneration vitreous microfibrous entrapped supported ZnO sorbent with high contacting efficiency for bulk H2 S removal from reformate streams in fuel cell applications[J].J Mater Eng Perform,2006,15(4):439,2006. |
| [8] | Yang H Y,Lu Y,Tatarchuk B J .Glass fiber entrapped sorbent for reformates desulfurization for logistic PEM fuel cell power systems[J].J Power Sources,2007,174(1):302,2007. |
| [9] | Karanjikar M R.Low temperature oxidation of carbon monoxide using microfibrous entrapped catalysts for fire escape mask application[D].US:Aubrn University,2005,2005. |
| [10] | Wang M M,Li J F,Chen L,et al .Miniature NH3 cracker based on microfibrous entrapped Ni-CeO2/Al2O3 catalyst monolith for portable fuel cell power supplies[J].Int J Hydrogen Energy,2009,34(4):1710,2009. |
| [11] | Collins J J .The LUB/equilibrium section concept for fixed bed adsorption[J].Chem Eng Prog Symp Ser,1967,63(74):31,1967. |
| [12] | McCabe W L,Smith J C,Harriott P.Unit operations of chemical engineering[M].6th Ed.Singapore:McGrawHill,2001,2001. |
| [13] | Salamatinia B,Kamaruddin A H,Abdullah A Z .Modeling of the continuous copper and zinc removal by sorption onto sodium hydroxide-modified oil palm frond in a fixed-bed column[J].Chem Eng J,2008,145(2):259,2008. |
| [14] | Aksu Z,Gonen F .Biosorption of phenol by immobilized activated sludge in a continuous packed bed:Prediction of breakthrough curves[J].Process Biochem,2004,39(5):599,2004. |
| [15] | Yoon Y H,Nelson J H .Application of gas adsorption kinetics:Ⅰ.A theoretical model for respirator cartridge service life[J].Am Ind Hygiene Association J,1984,45(8):509,1984. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%