The emulsion flow path is through successive horizontal emulsion preheating, direct heating, post heating and settling zones of the tank while removing vapor from {HEAD ~ the top} of the zones and water from the bottom of {TAIL ~ the zones} 
The emulsion flow path is through successive horizontal emulsion preheating , direct heating , post heating and settling zones of the tank while removing vapor from { HEAD ~ the top } of the zones and water from the bottom of { TAIL ~ the zones }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL