The method is used to condition, activate, or presulfide fresh or regenerated catalyst prior to its addition to {HEAD ~ the hydroconversion reactor} utilizing {TAIL ~ product streams} from the hydroconversion process 
utilizing
The method is used to condition , activate , or presulfide fresh or regenerated catalyst prior to its addition to { HEAD ~ the hydroconversion reactor } utilizing { TAIL ~ product streams } from the hydroconversion process
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 HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH