FCC catalyst cooler
AssigneeUop LLC
InventorsDaniel R. Johnson, Kevin J. Brandner
Life of this patent
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Abstract
A catalyst cooler arrangement for an FCC regenerator improves the operation of the cooler by the use of a full or partial screen arrangement at the cooler outlet of the regenerator to remove material that interferes with the operation of the cooler and especially the distribution of fluidizing gas within the cooler.
Claims8
In an FCC regenerator having a catalyst cooler comprising a shell and tube heat exchanger located external to an FCC regenerator vessel, a regenerator outlet opening defined by the wall of the regenerator vessel for transferring catalyst from the regenerator to the catalyst cooler, a cooler inlet opening defined by the shell of the cooler for receiving catalyst from the regenerator outlet opening, means for contacting catalyst in said cooler with a fluidizing gas, and a fluidizing gas outlet opening defined by said means for contacting and located below said cooler inlet opening, the improvement wherein means for screening objects having any dimension greater than at least 1/2 inch is fixed about the regenerator outlet opening and said means for screening has an arrangement that diverts screened objects away from said means for screening without blocking catalyst flow into said regenerator outlet opening.
The improvement of claim 5 wherein said screen section slopes downwardly to shed objects that contact said sheet of screen material.
Dependencies are inferred from the claim text.