The gaseous product stream is contacted with {HEAD ~ an absorbent} to produce a gas effluent and {TAIL ~ a liquid effluent} 
The gaseous product stream is contacted with { HEAD ~ an absorbent } to produce a gas effluent and { TAIL ~ a liquid effluent }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL