New 13X zeolite for propylene/propane separation by vacuum swing adsorption

被引：61

作者：

Campo, M. C. ^{[1
]}

Ribeiro, A. M. ^{[1
]}

Ferreira, A. ^{[1
]}

Santos, J. C. ^{[1
]}

Lutz, C. ^{[2
]}

Loureiro, J. M. ^{[1
]}

Rodrigues, A. E. ^{[1
]}

机构：

[1] Univ Porto, Dept Chem Engn, Fac Engn, Lab Separat & React Engn,Associate Lab LSRE LCM, P-4200465 Oporto, Portugal

[2] ARKEMA FRANCE, Grp Rech Lacq, Serv Adsorpt, F-64170 Lacq, France

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2013年 / 103卷

关键词：

13X; Propylene; Adsorption; VSA; Simulation; METAL-ORGANIC FRAMEWORK; PROPANE/PROPYLENE SEPARATION; MOLECULAR SIMULATION; PROPANE; SELECTIVITY; ISOBUTANE;

D O I：

10.1016/j.seppur.2012.10.009

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Adsorption equilibrium isotherms for propane and propylene on a new 13X zeolite from CECA were measured at three temperatures (323, 373, 423 K) up to 5 bar. Maximum capacities of 3.47 and 3.08 mol/kg were found for propylene and propane, respectively. These values are significantly higher than those reported in literature. Adsorption isotherms were fitted with Toth equation. Heats of adsorption were calculated as a function of loading from experimental data with Van't Hoff equation leading to 53 kJ/mol and 35 kJ/mol for propylene and propane, respectively; values were also obtained from fitting with Toth equation. Single and binary breakthrough curves were measured and simulated with a mathematical model for fixed bed adsorbers. A 5-step VSA cycle was also simulated to produce 99.5% propylene from a 25:75 propane/propylene mixture; experimental validation confirms a good prediction. Propylene was obtained with a purity of 99.54%, a recovery of 85% and a productivity of 1.46 mol(C3H6)/kg(ads)/h. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：60 / 70

页数：11

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