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