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