{HEAD ~ A portion} of the carbon dioxide product stream is utilized in {TAIL ~ the PSA unit} as a cocurrent purge at a pressure preferably above the operating pressure of the carbon dioxide PSA unit to obtain a product of higher purity 
is utilized in
{ HEAD ~ A portion } of the carbon dioxide product stream is utilized in { TAIL ~ the PSA unit } as a cocurrent purge at a pressure preferably above the operating pressure of the carbon dioxide PSA unit to obtain a product of higher purity
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH