Component analysis of enriched oxygen gas from a small-size PSA medical oxygen generator

Abstract

This paper studied on the component of enriched oxygen gas from a self-developed small-size PSA medical oxygen generator. Through gas chromatography each concentration group of oxygen, nitrogen, argon, carbon dioxide and total hydrocarbon with different outlet flow was investigated, and the fluctuation of each group during continuous operation of 48 h was also measured. The result showed that the key factor to constrain the increase of oxygen purity was micro argon in the air, which can reach to 5.1101% in oxygen-rich gas and didn't change with the variation of zeolite utilization or the increase of operating time, indicating the invalid of current molecular sieve materials. Another major gas nitrogen declined significantly with the improvement of the molecular sieve utilization, which was only account for 0.4643%. Other trace amount of impurity gas such as total hydrocarbon and carbon dioxide were only in ppm level. © 2013 Springer-Verlag.