Medical oxygen concentrator
AssigneePraxair Technology, Inc.
InventorsMark William Ackley, Guoming Zhong
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Abstract
An advanced medical concentrator process and system is provided using fast cycle and advanced adsorbent. Significant improvements achieved results in a smaller, lighter and more efficient system in comparison with the current commercial stationary concentrators. Integrated with a conserver, a small portable concentrator is achieved.
Claims43
A pressure swing adsorption (PSA) process for the production of up to 15 LPM of oxygen from air said process using at least one adsorbent bed and comprising the steps of:
- a) adsorption of nitrogen from said air onto said at least one bed of adsorbent;
- b) recovery of oxygen from said air having a purity of 85 vol. % to 95 vol. %,
- c) desorption of nitrogen from said at least one bed of adsorbent;
- wherein
- said adsorbent has a mass transfer coefficient (MTCN2) that is ≧100 s−1;
- said recovery of oxygen from said air is ≧35%, when said purity is 90 vol. % and
- the bed size factor (BSF) is less than 300 pounds adsorbent/TPDO.
A pressure swing adsorption (PSA) apparatus for the production of up to 15 LPM of oxygen having a purity of 85 vol. % to 95 vol. % from air said apparatus comprising:
- a) at least one bed of adsorbent having a MTCN2 ≧100 s−1;
- b) means for recovering oxygen from said air having a purity of 85 vol. % to 95 vol. %, wherein;
- said apparatus has a BSF of less than 300 pounds adsorbent/TPDO;
- and when said oxygen has a purity of 90 vol. %, it is produced at a recovery of greater than 35%.
Dependencies are inferred from the claim text.