Arrangements for feeding fluidizing gas to a fluidized bed combustion apparatus
AssigneeEnergy Equipment Corporation
InventorMaurice Harman
Life of this patent
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Abstract
Fluidizing gas supply pipes are passed through a wall of a fluidized bed container. The outermost end of the gas supply pipe is welded to a tube plate and the tube plate is in turn cooled by a coolant flowing thereagainst through tubes welded to the surface of the tube plate or the tube plate is spaced from the wall of the container to form a water jacket through which the coolant fluid is arranged to flow.
Claims10
A fluidised bed combustion arrangement comprising a container having walls for housing a bed of inert particulate material, at least one supply tube passing into said container through at least one of said walls to extend into said bed of inert particulate material, each said supply tube having apertures formed along the length thereof and having its outermost end coupled to a fluidising gas supply means operable to pass fluidising gas thereto whereby gas from said fluidising gas supply means passes into said container via said supply tubes and passes via said apertures into said bed of inert particulate material to fluidise said bed, the outermost end of each said supply tube being fixed to a wall of the container of the fluidised bed, cooling means mounted in intimate thermal contact with that portion of said wall adjacent the ends of each of said at least one supply tube, said cooling means including a liquid coolant passing therethrough to cool that portion of said wall adjacent the outermost end of said at least one supply tube.
Dependencies are inferred from the claim text.