Oxygen enrichment from air by using the interception effect of gradient magnetic field on oxygen molecules

This Letter reports a novel method to enrich oxygen from air by using the interception effect of gradient magnetic field on oxygen molecules. The effect of oxygen enrichment is relevant to the inlet air flow and the outlet air flow. The experimental results indicate that there is an optimal ratio between the inlet air flow and the outlet air flow. Under the conditions in this study, it should be about 2.0. Both too high and too low ratio result in a low increment of oxygen concentration. This phenomenon can be explained by considering the balance between the inertia force and the magnetizing force. Different ratio makes that the gas crossing the gradient magnetic field has a different macroscopic velocity of flow, namely, inertia force. The further experimental research shows that the effect of oxygen enrichment can be improved by extending the length of the borders of the gradient magnetic field under the constant inlet air flow and outlet air flow.