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