| 摘要 |
<p>PURPOSE:To substantially enhance the separating efficiency of nitrogen from oxygen in the air in manufacturing nitrogen by a pressure swing adsorption method by adding magnetic particles to a granular adsorbent consisting of molecular sieve carbons. CONSTITUTION:A magnetic adsorbent for manufacturing nitrogen has magnetic particles 2 of 1-5 micron in diameter, e.g. ferrite magnetic particles and rare earth magnetic particles, adhered to the exterior surface of a granular adsorbent 1 consisting of molecular sieve carbons which are rendered into a pellet of 3-5mm in diameter and 5-7mm in length via an air permeable adhesive agent 4 such as starch paste. Such adsorbent as this has the magnetic field in the exterior surface thereof and in the interior of the granular adsorbent 1 and exhibits an excellent selectivity of adsorption to oxygen gas, thereby increasing the partial pressure of oxygen on the surface of the granular adsorbent 1 and accelerating the diffusion rate into pores in the adsorbent. Therefore, oxygen and nitrogen are separated efficiently due to the influence of magnetism on oxygen.</p> |
