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