Experimental investigation and simulation of CO2-N2 mixture adsorption on coal-based activated carbon.
Volume Title: 1
1گروه محیط زیست،دانشکده مهندسی شیمی،مهندسی شیمی، دانشگاه امیرکبیر، تهران،ایران
2chemical engineering department, Amirkabir university, Tehran, Iran
In this paper, we report a separation of 12% mol/mol carbon dioxide-nitrogen separation through the pressure swing technique. To this aim, coal-based activated carbon was used as an adsorbent in a fixed bed column at different pressures. A model based on LDF approximation for the mass balance and momentum balance was proposed which can satisfactorily reproduce experimental breakthrough data. The model consists of a set of coupled partial differential equations and these equations are solved by the numerical method of lines in MATLAB software. The effect of operational pressure changes and bed height was investigated on adsorption performance. It was concluded that pressure has a significant effect. The saturation time increases as the pressure rises. Also, changing the bed height from 0.25 m to 0.4 m leads to a higher saturation time