Carbonaceous slurry combustor

Details Carbonaceous slurry combustor Carbonaceous slurry combustor

1986-08-01

1988-11-22

Yuen, Henry C.

Furnaces

Process

Burning pulverized fuel

110238, 110265, 110262, 431 10, 431284, F23D 100

Patent

active

047857463

ABSTRACT:
Disclosed is an apparatus for introducing slurry fuels into the combustion zone of high power density combustors, boilers, industrial furnaces or steam generators. Having the general form of an elongate cylinder, the apparatus comprises a central conduit for a flow of particulate carbonaceous fuel suspended in a carrier liquid, and separate annular passageways for an atomizing fluid and a coolant. The slurry flows longitudinally to about the position where it is to be dispersed into the combustion zone, is there divided into a plurality of streams that are deflected to flow individually through a corresponding plurality of radially extending passages and slurry portholes spaced apart around the periphery of the cylindrical structure. Just before these streams leave the injector they are each impinged by a higher-velocity longitudinal flow of atomizing fluid which breaks the filaments of viscous slurry into minute droplets. Each droplet consists of particles of carbonaceous fuel suspended in liquid and is small enough to be heated and ignited closely adjacent the periphery of the injector.

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