Solid fuel combustion system for gas turbine engine

Details Solid fuel combustion system for gas turbine engine Solid fuel combustion system for gas turbine engine

1991-11-25

1993-10-26

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

With combustible gas generator

60 39464, 60732, F02C 328

Patent

active

052555062

ABSTRACT:
A solid fuel, pressurized fluidized bed combustion system for a gas turbine engine includes a carbonizer outside of the engine for gasifying coal to a low Btu fuel gas in a first fraction of compressor discharge, a pressurized fluidized bed outside of the engine for combusting the char residue from the carbonizer in a second fraction of compressor discharge to produce low temperature vitiated air, and a fuel-rich, fuel-lean staged topping combustor inside the engine in a compressed air plenum thereof. Diversion of less than 100% of compressor discharge outside the engine minimizes the expense of fabricating and maintaining conduits for transferring high pressure and high temperature gas and incorporation of the topping combustor in the compressed air plenum of the engine minimizes the expense of modifying otherwise conventional gas turbine engines for solid fuel, pressurized fluidized bed combustion.

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