METHOD FOR THE RECOVERY OF REGENERATED CATALYST AND FLOW DAMPENER UTILIZED IN THE METHOD

摘要

To obviate pressure surges in the moving bed regenerator column during the recovery of hot regenerated catalyst particles from said regenerator column, the method for the recovery periodically discharges a measured volume of said hot particles from said regenerator column into an enclosed flow dampener situated inside a catalyst hopper of substantially larger volume. The flow dampener utilized in the method comprises an openended standpipe containing a plurality of vertically spaced apart outlet means through which said flow dampener is in open communication with said catalyst hopper; said outlet means being vertically spaced apart to provide a particle hold-up volume between said outlet means substantially equivalent to the aforesaid measured volume, and being individually sized to accomodate particle flow rate up to about 50% of the average low rate at which said particles are discharged into said flow dampener.