{HEAD ~ A portion} of {TAIL ~ the carbon dioxide product stream} is utilized in 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 ~ A portion } of { TAIL ~ the carbon dioxide product stream } is utilized in 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 REL TAIL TAIL 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 OTH OTH OTH OTH OTH OTH