Selective Transport of Propylene by Silver Ion Complex Through an Immobilized Liquid Membrane

Takht Ravanchi, M.; Kaghazchi, T.; Kargari, A.

Selective Transport of Propylene by Silver Ion Complex Through an Immobilized Liquid Membrane

Document Type : Full article

Authors

M. Takht Ravanchi ¹

T. Kaghazchi ²

A. Kargari ³

¹ Center of Excellence for Petrochemical Engineering, Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran.

² Center of Excellence for Petrochemical Engineering, Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran

³ Petrochemical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), Mahshahr Campus, Mahshahr, Iran

Abstract

The separation of hydrocarbon mixture using facilitated transport membrane (an immobilized liquid membrane type) was investigated. A 50:50 (vol. %) propylene- propane mixture was used as a sample of the hydrocarbon mixture. The effect of trans-membrane pressure (in the range of 50-120 kPa) and carrier concentration (in the range of 0-20 wt.% AgNO 3 ) on separation performance was studied experimentally and mathematically. It was observed that increasing trans-membrane pressure and carrier concentration supports the separation factor and propylene permeation rate. On the other hand, increasing trans-membrane pressure and decreasing carrier concentration supports the propane permeation rate. Hence, the greater the trans-membrane pressure and carrier concentration, the more purified the product obtained. It was found that at trans-membrane pressure of 120kPa and carrier concentration of 20wt. %, the highest separation factor (270) and propylene permeation rate (7*10-7 mol/s) was obtained. The average deviation between the experimental and modeling results was found to be 5.3% for propylene permeation rate and 0.03% for propane permeation rate.

Keywords

Facilitated Transport

Immobilized Liquid Membrane

Modeling

Propylene

Propane

Silver Nitrate