{HEAD ~ A waste stream} from {TAIL ~ the liquifier} is recycled to the carbon dioxide PSA unit feed 
from
{ HEAD ~ A waste stream } from { TAIL ~ the liquifier } is recycled to the carbon dioxide PSA unit feed
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH