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Title: Fluidized-bed calciner with combustion nozzle and shroud

A nozzle employed as a burner within a fluidized bed is coaxially enclosed within a tubular shroud that extends beyond the nozzle length into the fluidized bed. The open-ended shroud portion beyond the nozzle end provides an antechamber for mixture and combustion of atomized fuel with an oxygen-containing gas. The arrangement provides improved combustion efficiency and excludes bed particles from the high-velocity, high-temperature portions of the flame to reduce particle attrition.
Authors:
 [1] ;  [2] ;  [1]
  1. (Idaho Falls, ID)
  2. (Shelley, ID)
Publication Date:
OSTI Identifier:
862803
Report Number(s):
US 4017253
DOE Contract Number:
AT(10-1)-1375
Resource Type:
Patent
Research Org:
Aerojet Nuclear Co., Idaho Falls, Idaho (USA). Idaho National Engineering Lab.
Country of Publication:
United States
Language:
English
Subject:
fluidized-bed; calciner; combustion; nozzle; shroud; nozzle; employed; burner; fluidized; bed; coaxially; enclosed; tubular; shroud; extends; nozzle; length; fluidized; bed; open-ended; shroud; portion; nozzle; provides; antechamber; mixture; combustion; atomized; fuel; oxygen-containing; gas; arrangement; provides; improved; combustion; efficiency; excludes; bed; particles; high-velocity; high-temperature; portions; flame; reduce; particle; attrition; combustion efficiency; bed particles; reduce particle; arrangement provides; provides improved; oxygen-containing gas; fluidized bed; fluidized bed; containing gas; shroud portion; tubular shroud; improved combustion; fluidized-bed calciner /432/110/239/422/431/