Separation of Carbondioxide from CO2-Air Mixture Using ILM Membrane Containg DGA-TEG

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Davardoost, Farzad | 2013

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 44695 (06)
University: Sharif University of Technology
Department: Chemical and Petroleum Engineering
Advisor(s): Bastani, Dariush
Abstract:
In this research, initially the Triethylene glycol and Diglycol amine liquid membrane which is supported by PVDF, was prepared in order to separate the Carbone dioxide from CO2-Air mixture. A polyvinylidene fluoride (PVDF) membrane was chosen to have chemical resistance to solution. The effect of Pressure, Concentration of TEG and DGA solution and the percentage of carbon dioxide in feed; in rate and permeability of CO2, N2 and O2 and also selectivity of CO2/ N2 , CO2/ O2 and N2/ O2 was investigated. Transport of CO2 was facilitated due to reversible chemical reaction between CO2 and amine solution. The experiments were done in 0.4, 0.6 and 0.8bar and different concentration of solution. Most Permeability and Selectivity of CO2 was reached at concentration of %5 wt TEG, 95%wt DGA and pressure of 0.8bar. It was seen that permeability and selectivity was increased by increasing the pressure; and also results show that by increasing the percentage of carbon dioxide in feed, the permeability and selectivity of CO2 decreases
Keywords:
Gases Separation ; Triethylene Glycol ; Immobilized Liquid Membrane ; Diglycol Amine (DGA) ; Carbon Dioxide Separation

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