Patent ID: 6883247

Claim:
A gas delivery system comprising: a first stage compressor pressurizing an inlet gas to between 90 and 500 psig; a first absorption bed comprising a molecular sieve material in fluid communication with said first stage compressor, said absorbent bed enriching an exiting gas stream in at least one inlet gas component; a second stage compressor immersed in a liquid heat transfer fluid, compressing the exiting gas stream to a pressurized gas stream having a pressure of between about 5000 and 10,000 psig; a cascade system for storing the pressurized gas stream at a pressure between about 3500 and 5000 psig; a control system in operational control of at least one of said first stage compressor, said absorbent bed, said second stage compressor and said cascade system; and an outlet for delivering said pressurized gas stream.