Title: Adsorbent for separating nitrogen from mixed gas of oxygen and nitrogen, and process for producing nitrogen by using same
Application Number: 02816629 Application Date: 2002.08.29
Publication Number: 1547504 Publication Date: 2004.11.17
Approval Pub. Date: 2006.02.01 Granted Pub. Date: 2006.02.01
International Classifi-cation: B01J20/20,C01B21/04
Applicant(s) Name: Nippon Oxygen Co., Ltd. Address:
Inventor(s) Name: Hayashida Masayoshi, Kawai Masato, Marumo Shinichi
Attorney & Agent: zhu dan
Abstract:
     An adsorbent for separating nitrogen from a mixed gas of oxygen and nitrogen is MSC wherein an oxygen and nitrogen separation ratio alpha and a ratio (t95/t50) of a time t50 required for adsorbing 50% of the oxygen equilibrium adsorption amount and a time t95 required for adsorbing 95% of the oxygen equilibrium adsorption amount satisfy the inequality (t95/t50)<0.4x(alpha-24)alpha>=35. The amount of adsorbent used with respect to a predetermined amount of nitrogen generated can be reduced since a method is carried out which uses this adsorbent to produce nitrogen by separating nitrogen from the mixed gas of oxygen and nitrogen by means of a PSA method. By this means, it is possible to reduce the cost of the apparatus and reduce and miniaturize the scale of the apparatus, and the power consumption amount can be reduced.
Time: 9