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Dual-reflux pressure swing adsorption (DR-PSA) systems represent new options for producing two pure products from binary gas mixtures using adsorption. Within the constraint of DR-PSA, there are several options: feed to the low- or high-pressure bed and equalize, repressurize and blowdown with either the weakly or strongly adsorbed gas (opposite ends of the adsorption column). Each of these options...
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