Coal ash agglomeration device

Details Coal ash agglomeration device Coal ash agglomeration device

1975-02-24

1976-02-03

Sprague, Kenneth W.

Furnaces

Ash receiving and handling devices

Fly ash disposers

48 63, 48206, 423659, F23J 100

Patent

active

039358259

ABSTRACT:
An improved apparatus for withdrawing agglomerated solids from a fluidizing chamber housing a main, fluidized bed of finely divided solids which comprises at least one withdrawal chamber having a width less than the fluidizing chamber and positioned below the fluidized bed. This withdrawal chamber has sufficient dimensions (width (or diameter when cylindrical) and depth) to contain a second fluidized or semi-fixed bed within said chamber when a high velocity gas stream is introduced into the bottom portion of the withdrawal chamber. This high velocity gas stream forms an inverted cone in the withdrawal chamber, wherein the walls of the cone are defined by the fluidized or semi-fixed bed within the withdrawal chamber. The velocity of the gas stream is adjusted to selectively remove high density agglomerates downward from the main fluidized bed without removing the fluidized solids in admixture therewith. This apparatus is particularly suited for withdrawing agglomerated ash particles from the fluidized bed of a coal gasification reactor.

REFERENCES:
patent: 2582711 (1952-01-01), Nelson
patent: 2906608 (1959-09-01), Jequier et al.
patent: 3218998 (1965-11-01), Fairman et al.
patent: 3772999 (1973-11-01), Miller, Jr. et al.
patent: 3805713 (1974-04-01), Notary et al.
patent: 3840345 (1974-10-01), Andre
patent: 3867110 (1975-02-01), Schora et al.

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