F - Mech Eng,Light,Heat,Weapons – 02 – C
Patent
F - Mech Eng,Light,Heat,Weapons
02
C
F02C 1/08 (2006.01) F01K 23/00 (2006.01) F01K 23/10 (2006.01) F02C 3/26 (2006.01) F02C 3/34 (2006.01) F02C 7/224 (2006.01) F02C 9/38 (2006.01)
Patent
CA 2118178
11 Abstract In the method, the raw gas flowing out of the com- bustion chamber - when the temperature is above the melting temperature of the ash - is first cooled by recirculated exhaust gas and/or air and/or oxygen to under the ash melting point temperature but above the gas turbine inlet temperature, is subsequently further cooled to approximately 650-950 °C by giving up heat to the clean gas and by admixture of recirculated exhaust gas and/or air and/or oxygen, is cleaned at this tem- perature by known methods from dust, including alkali metal compounds, SO2 and NOx, is again heated as clean gas to the permissible gas turbine inlet temperature by taking up heat from the raw gas and then flows through a gas turbine and, subsequently, a waste heat steam generator, in which water for operating a steam turbine of one or more pressure stages is preheated, evaporated and superheated. The method is distinguished by particularly high efficiencies for the electrical current generators.
Alstom Energy Systems Gmbh
Robic
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