{HEAD ~ An improved method} is described for presulfiding and preconditioning {TAIL ~ a residuum hydrotreating or hydrocracking catalyst} as an integrated part of the hydroconversion process in which catalyst is added on stream intermittently or continuously without interruption of the hydroconversion process 
is described for preconditioning
{ HEAD ~ An improved method } is described for presulfiding and preconditioning { TAIL ~ a residuum hydrotreating or hydrocracking catalyst } as an integrated part of the hydroconversion process in which catalyst is added on stream intermittently or continuously without interruption of the hydroconversion process
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