Dense and sock catalyst loading compared

John T. Wooten Catalyst Handling Service Wilmington, Del. Dense loading is preferable to sock loading in several instances. The advantages of dense loading include increased density, capacity, run length, reactor integrity, and product quality. Sock loading, as a result of its tendency to create void spaces, may not maximize a reactor's capacity. Sock loading, on the other hand, because it is more tolerant to particulate matter in the feed and distributes catalyst in a less dense state, may be preferable to dense loading in some situations. Sock loading often comes at a lower cost. For those refiners who do not require or cannot handle the increased capacities that dense lo...

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