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