For example, the mixture of propyne and propadiene may have been obtained from the bottom effluenet of {HEAD ~ a propane/propene splitter} which contains significant amounts of {TAIL ~ propane}, propene, propyne and propadiene 
For example , the mixture of propyne and propadiene may have been obtained from the bottom effluenet of { HEAD ~ a propane / propene splitter } which contains significant amounts of { TAIL ~ propane } , propene , propyne and propadiene
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH