Apparatus for cooling fluid solid particles in a regeneration system

Claim 1

In an improved solid particulate material regeneration system comprising collected fluidized mass(es) of said solid particulate material, the improvement which comprises: A. regenerating the solid particulate material by combustion of deposited hydrocarbonaceous material on said solid particulate material in a plurality of separate stages arranged for sequential flow of solid particulate material therethrough under regeneration temperature conditions maintained less than 816° C. (1,500° F.); B. accomplishing said regenerating of solid particulate material in the upper stage of regeneration under conditions providing a flue gas recovered therefrom at an elevated temperature up to about 760° C. (1,400° F.); C. cooling said solid particulate material flowing downwardly counter-current to fluidized gas in a heat-exchange zone to provide partially-cooled solid particulate material, said heat-exchange zone being provided with a plurality of upwardly extending liquid-carrying heat-exchange conduit combinations and a means for charging said fluidizing gas to a lower half and an upper half of said heat-exchange zone, said means comprising a header means located near the upper end of said heat-exchange zone and having suspended from said header means a plurality of vertical aeration conduits, a first portion of said vertical aeration conduits having their lower ends located in said lower half of said heat-exchange zone and a second portion of said vertical aeration conduits having their lower ends located in said upper half of said heat-exchange zone.