| 摘要 |
PURPOSE:To improve the thermal efficiency by installing a high-pressure air heater for heating at least a part of the high-pressure air which flows into a combustor by the generation gas formed in a thermal decomposition furnace for thermally decomposing bilogical fuel. CONSTITUTION:A thermal decomposition furnace 12 for the thermal decomposition of bilogical fuel which has a fluidic layer consisting of biological fuel and thermal decomposition medium and a fluidic layer type combustion furnace 14 which heats the thermal decomposition medium in circulation between the thermal decomposition furnace 12 are provided. The generation gas formed in the thermal decomposition furnace 12 is supplied into the combustor 60 of a gas turbine 80 through a multicyclone 28, cleaning tower 46, gas holder 48, etc., and combusted under the supply of the high-pressure air supplied from an air compressor 82. In this case, the high-pressure air supplied from the air compressor 82 is branch-supplied into two high-pressure air heater 44 and 62, and heated by the sensible heat of the generated gas supplied from the thermal decomposition furnace 12 and the sensible heat of the combustion exhaust gas supplied from the combustion furnace14 and then introduced into the combustor 60.
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