In addition to dense loading activities, CatFlow® is a technology developed and patented by Petroval to unload a reactor catalyst bed via a horizontal dump nozzle in the absence of a sloped dump nozzle (45°).
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Since dense loading reduces the void space within a catalyst bed, it is unavoidable that the bed pressure drop (dP) will increase. This increase is quite significant, of the order of about 80%.
Downstream the preheat train – where PETROVAL tube inserts can be installed in heat exchangers – the unit Heater is another potential bottleneck for a unit.