This invention further relates to {TAIL ~ an improved method} for integrating {HEAD ~ catalyst} presulfiding with a residuum hydroconversion process 
This invention further relates to { TAIL ~ an improved method } for integrating { HEAD ~ catalyst } presulfiding with a residuum hydroconversion process
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH