Curtiss-wright Corporation

August H Zoll

Rossa W Cole

In a gas turbine power plant having a pressurized fluidized bed combustor, gas turbine-air compressor subsystem and a gas clean-up subsystem interconnected for fluid flow therethrough, a pipe communicating the outlet of the compressor of the gas turbine-air compressor subsystem with the interior of the pressurized fluidized bed combustor and the gas clean-up subsystem to provide for flow of compressed air, heated by the heat of compression, therethrough. The pressurized fluidized bed combustor and gas clean-up subsystem are vented to atmosphere so that the heated compressed air flows therethrough and loses heat to the interior of those components before passing to the atmosphere.

Method of and apparatus for preheating pressurized fluidized bed

The protective control system for a gas turbine power plant having a pressurized fluidized bed combustor provides check valve means located in the passage supplying compressed air from a compressor to the combustor so as to prevent, upon loss of load or shutdown of the plant, reverse flow of high pressure, high temperature, dirty gaseous fluid from the combustor to the compressor and thereby prevent contamination, surging and damage to the compressor. Also a vent means is provided downstream of the combustion gas clean-up system to effect blowdown or depressurization of the combustor.

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Cedar Grove, NJ, United States of America

August H Zoll