Optimization of Vacuum Pressure Swing Adsorption Process for O2 Production

Wednesday, November 10, 2010: 9:30 AM
250 A Room (Salt Palace Convention Center)
Preeti Chandra and James Smolarek, Research and Development, Praxair Inc., Tonawanda, NY

Traditionally process designs for O2 vacuum pressure swing adsorption (VPSA) processes have focused on reduction of capital to lower the product cost. Lower capital costs have been achieved by running faster cycles or better adsorbents to reduce the adsorbent inventory (lower bed size factors) and lower desorption pressures to increase recovery. The other component of product cost is operating cost or power consumption. There has been less focus on process development to achieve reduction in unit power. This paper presents a scenario where a VPSA cycle was optimized for lower power consumption per unit of product at the expense of recovery and bed size factor. Modeling results will be presented and adsorber performance in two different cases will be compared.

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See more of this Session: PSA/TSA
See more of this Group/Topical: Separations Division