Coal ash agglomeration device

  • US 3,935,825 A
  • Filed: 02/24/1975
  • Issued: 02/03/1976
  • Est. Priority Date: 02/24/1975
  • Status: Expired due to Term
First Claim
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1. In an apparatus for contacting a mass of fluidized solids with a gaseous medium and withdrawing agglomerated solids from the mass of fluidized solids wherein the apparatus includes a fluidizing chamber, a grate positioned near the bottom of the fluidizing chamber to support said fluid bed and means for passing a gaseous medium through said grate to assist in maintaining the solids in a fluidized state, the improved apparatus for withdrawing agglomerated solids from said mass of fluidized solids which comprises at least one withdrawal chamber having a width less than the width of the fluidizing chamber, positioned below said fluid bed and open at the top to communicate with the fluidizing chamber and, means for introducing a high velocity fluidizing gaseous medium to the bottom portion of said withdrawal chamber, said withdrawal chamber having dimensions sufficient to contain a semi-fixed bed within said chamber, said high velocity gaseous means positioned in said withdrawal chamber to provide a high velocity inverted conical shaped gaseous flow pattern through the semi-fixed bed, the walls of said pattern provided by said semi-fixed bed.

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