An outlet 28 is provided on the products header to withdraw {HEAD ~ reactants} which emerge from {TAIL ~ the tube bundle} for subsequent processing 
emerge from
An outlet 28 is provided on the products header to withdraw { HEAD ~ reactants } which emerge from { TAIL ~ the tube bundle } for subsequent processing
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH