Gas separation: processes – Solid sorption – Including reduction of pressure
Patent
1996-02-23
1997-08-12
Spitzer, Robert
Gas separation: processes
Solid sorption
Including reduction of pressure
95102, 95103, 95105, 95117, 95130, 95139, B01D 53053
Patent
active
056560672
ABSTRACT:
A vacuum swing adsorption process for separating a feed gas mixture into a more strongly adsorbable component and a less strongly adsorbable component in a process employing two vacuum pumps and three adsorbent beds containing an adsorbent selective for the more strongly adsorbable component using countercurrent depressurization and cocurrent ambient feed repressurization simultaneous with product end to product end pressure equalization and a common-shaft machinery arrangement which allows the expansion energy contained in the countercurrent depressurization and cocurrent ambient feed repressurization streams to be recovered and utilized to reduce overall process power consumption. Addition of three valves and an expander element will also allow expansion energy in the product purge and pressure equalization streams to be recovered. Oxygen product can be recovered from air at low cost using the process.
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Agrawal Rakesh
Watson Charles Franklin
Webley Paul Anthony
Wehrman Joseph Gerard
Air Products and Chemicals Inc.
Chase Geoffrey L.
Spitzer Robert
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