A catalytic multi stage hydrocarbon conversion process is provided for reducing high metals content, sulfur content and pour point of the catalytically reacted residual oil by the use of {HEAD ~ sequential combination} of {TAIL ~ catalytic compositions} 
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A catalytic multi stage hydrocarbon conversion process is provided for reducing high metals content , sulfur content and pour point of the catalytically reacted residual oil by the use of { HEAD ~ sequential combination } of { TAIL ~ catalytic compositions }
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