Method for producing a clean heated fluid

Combustion – Process of combustion or burner operation – In a porous body or bed – e.g. – surface combustion – etc.

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Details

122221, 122 4D, 110 8R, F23D 340, F23D 1900

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active

046767339

ABSTRACT:
The invention relates to a method for combusting a dirty and/or difficult to burn fuel in a fluidized bed combustor. The fluidized bed and freeboard zone of the combustor are cooled by a non-intrusive counterflow cooling system which controls combustion temperatures and produces a clean, hot gas. The combustor is operated with many combinations of features including: low, in bed fuel injection; use of finely divided fuel; slug flow fluidization; and injection of lime or limestone to effect desulferization or raise the ash melting temperature, if desired.

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