COMBINED GAS AND STEAM TURBINE PROCESS

摘要

A combined gas/steam turbine process comprises a charged fluidised-bed furnace having a fluidised bed (1) cooled by water and/or steam or air, a steam generator with connected steam turbine and a gas turbine (6) charged with the flue gas from the fluidised-bed furnace. The process is run in such a way that a coal gasifier (2) is operated in parallel to the fluidised-bed furnace. Compressed air is here heated indirectly in the fluidised bed of the fluidised-bed furnace and a part of the compressed air thus heated is passed through the coal gasifier, while the other part is fed to a combustion chamber (5) upstream of the gas turbine. The purified product gas from the coal gasifier is used as the fuel gas and is fed to the combustion chamber in the same way as the flue gas from the fluidised-bed furnace.