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