Air Products and Chemicals, Inc.

Craig E Steigerwalt

Roger Dean Whitley

Matthew James Labuda

Glenn Paul Wagner

James Michael Occhialini

Timothy Christopher Golden

David Ross Graham

Stephen Clyde Tentarelli

Luigi Depari

Pressure swing adsorption process for producing oxygen comprising (a) providing at least one adsorber vessel having a first layer of adsorbent adjacent the feed end of the vessel and a second layer of adsorbent adjacent the first layer, wherein the surface area to volume ratio of the first layer is in the range of about 0.75 to about 1.8 cm; (b) introducing a pressurized feed gas comprising at least oxygen, nitrogen, and water into the feed end, adsorbing at least a portion of the water in the adsorbent in the first layer, and adsorbing at least a portion of the nitrogen in the adsorbent in the second layer, wherein the superficial contact time of the pressurized feed gas in the first layer is between about 0.08 and about 0.50 sec; and (c) withdrawing a product gas enriched in oxygen from the product end of the adsorber vessel.

Performance stability in rapid cycle pressure swing adsorption systems

System for producing an oxygen-rich gas comprising (a) a primary gas mover including a first and a second compressor, wherein the primary gas mover is characterized by a weight W; (b) a drive motor adapted to drive the first and second compressors; (c) a rechargeable power supply characterized by a weight, W; and (d) a pressure/vacuum swing adsorption unit adapted to separate the pressurized feed air into an oxygen-rich product at a product flow rate Fand an oxygen-depleted waste gas, wherein the adsorption unit comprises a plurality of adsorber beds containing an adsorbent and characterized by a total adsorbent weight W; and wherein the combined weight, W, of the adsorbent, the primary gas mover, and the rechargeable power supply is characterized by the expression0.75where Fis in liters per min (at 23&#xb0; C. and 1 atma pressure), and W, W, and Ware in pounds.

Weight-optimized portable oxygen concentrator

System for producing an oxygen-rich gas comprising (a) a primary gas mover including a first and a second compressor, wherein the primary gas mover is characterized by a weight W; (b) a drive motor adapted to drive the first and second compressors; (c) a rechargeable power supply characterized by a weight, W; and (d) a pressure/vacuum swing adsorption unit adapted to separate the pressurized feed air into an oxygen-rich product at a product flow rate Fand an oxygen-depleted waste gas, wherein the adsorption unit comprises a plurality of adsorber beds containing an adsorbent and characterized by a total adsorbent weight W; and wherein the combined weight, W, of the adsorbent, the primary gas mover, and the rechargeable power supply is characterized by the expression0.75 F&#x3c;W&#x3c;2.02 Fwhere Fis in liters per min (at 23&#xb0; C. and 1 atma pressure), and W, W, and Ware in pounds.

Apparatus for dispersing particles flowing from an orifice comprising a deflecting surface disposed relative to the orifice, wherein the deflecting surface is fixed relative to the orifice, whereby particles flowing from the orifice can impinge upon and can be dispersed by the deflecting surface, wherein the orifice is one of a plurality of orifices disposed in a wall of a conduit, and wherein the conduit has an axis which is oriented between about 45 degrees and about 70 degrees from the vertical such that particles can flow through the conduit and through the orifices by gravity.

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Slatington, PA, United States of America

Craig E Steigerwalt