Propylene, hydrogen, and oxygen are reacted in {HEAD ~ a slurry} comprising a catalyst and a solvent to produce a gaseous product stream and {TAIL ~ a liquid product stream} 
to produce
Propylene , hydrogen , and oxygen are reacted in { HEAD ~ a slurry } comprising a catalyst and a solvent to produce a gaseous product stream and { TAIL ~ a liquid product stream }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL