Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1979-12-28
1982-03-23
Spitzer, Robert H.
Gas separation
Means within gas stream for conducting concentrate to collector
55179, 55387, B01D 5304
Patent
active
043210694
ABSTRACT:
A multiple vessel cascade gas enrichment adsorber is provided herein. Two sets of adsorption chambers are provided, each comprising one primary vessel and one secondary vessel, and optionally also a tertiary or further vessel, and each containing a suitable adsorbent, e.g., 5 A molecular sieve adsorbent for air separation, the vessels being connected in a cascading connection through an interstage loop line. Specially designed collector means is provided within each vessel. The individual volumetric size of the subsequent stage vessel or vessels must be smaller than the volumetric size of the first stage vessel. While one adsorber set is engaged in the production of, e.g., oxygen-enriched air, the other is experiencing regeneration through removal of the various adsorbed gases and vapors, including, e.g., nitrogen. The cascading of the adsorbers significantly decreases the time required for regeneration by increasing the tolerance for residual adsorbate on the major portion of the adsorbent. Despite the cyclic nature of the process, the flow of product, e.g., oxygen, is continuous.
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