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