Improved pressure swing adsorption process

Details Improved pressure swing adsorption process Improved pressure swing adsorption process

B - Operations, Transporting

01

D

B01D 53/04 (2006.01) B01D 53/047 (2006.01) B01D 53/053 (2006.01)

Patent

CA 2160046

An improved PSA process for separating at least one non-preferentially-adsorbable first gas, such as oxygen and argon, from a gas mixture, such as air, containing said first gas and one or more selectively-absorbable second gases. It involves novel steps of simultaneous equalization and evacuation followed by simultaneous feed and product gas repressurization of PSA beds. This results in an overall faster and more efficient cycle with 100% utilization of a pressure-reducing means, such as a vacuum blower, and a reduction in power use of about 15%. The invention involves overlapping of various steps of the PSA cycle to reduce total cycle time and thus improve productivity.

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