Feasibility study of carbon dioxide separation from gas mixture by vortex tube.

The vortex tube uses energy separation technology to separate inlet gases into hotter and colder mixtures than the inlet state. In this research, a feasibility study is carried out on a vortex tube used to separate CO 2 gas from air-CO 2 gas mixture at atmospheric temperature. Prior to the feasibility experiment, transient response of vortex tube is investigated to determine the time needed to achieve steady state temperature of energy separation. The experimental parameters of gas separation are the pressures and concentrations of CO 2 that is mixed with air. Results show that CO 2 gas separation is proportional to operating pressure. The results also show that the cold mass fraction is a core parameter for gas separation. The percentage mass fraction of separated CO 2 gas at cold exit is 7.4% at 3  bar g and cold mass fraction of 0.6. [ABSTRACT FROM AUTHOR]