B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/047 (2006.01)
Patent
CA 2255526
The present invention relates to the the recovery of low purity oxygen gas from the top of an adsorber vessel into a receiver tank to be used as a purge reflux gas. Recovery of void gas results in improved process efficiency. The invention may also employ a simultaneous evacuation from the top of the adsorber to remove the lower purity void gas while the main waste evacuation step is conducted. This simultaneous co-current top void gas recovery and counter-current waste evacuation from both ends of the adsorber allows for an overall increase in product recovery of between 3-5% over conventional processes.
Praxair Technology Inc.
Sim & Mcburney
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