Fluidized-bed calciner with combustion nozzle and shroud

Details Fluidized-bed calciner with combustion nozzle and shroud Fluidized-bed calciner with combustion nozzle and shroud

1975-09-16

1977-04-12

Camby, John J.

Heating

With heating gas conveying, agitating, scattering or...

431 10, 431170, 431351, 2394193, 23288S, 110 8F, F27B 1514, F23M 304

Patent

active

040172538

ABSTRACT:
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.

REFERENCES:
patent: 1308739 (1919-07-01), Richardson et al.
patent: 2582710 (1952-01-01), Martin
patent: 2786742 (1957-03-01), McKinley et al.
patent: 3368804 (1968-02-01), Swain
patent: 3370918 (1968-02-01), Begley
patent: 3638865 (1972-02-01), McEneny et al.
patent: 3790086 (1974-02-01), Masai

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