Combustion turbine fuel inlet temperature management for...

F - Mech Eng,Light,Heat,Weapons – 02 – C

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F02C 7/224 (2006.01) F01K 23/06 (2006.01) F02C 3/22 (2006.01) F02C 3/30 (2006.01) F02C 7/08 (2006.01)

Patent

CA 2459332

Syngas (2) for use as fuel in the combustion turbine (200) of an IGCC process is heated to a maximum temperature of about 350 degrees fahrenheit prior to entering the combustor (16). Noncombustible diluent gas (10) and additional fuel gas with a higher heating value is also added to the syngas to increase the total heating value of the feed to the combustor of the gas turbine. The cooler temperature allows for more mass flow to the combustion turbine, allowing for greater sensible heat in the syngas to offset the latent heat loss due to the cooler temperature.

On réchauffe un gaz de synthèse (2) pour utilisation en tant que combustible dans une turbine de combustion (200) d'un procédé de gazéification intégrée à cycle combiné à une température maximale d'environ 350 degrés Fahrenheit préalablement à son admission dans la chambre de combustion (16). On ajoute également du gaz diluant non combustible (10) et du gaz combustible supplémentaire à puissance calorifique supérieure au gaz de synthèse pour accroître la puissance calorifique d'alimentation à la chambre de combustion de la turbine à gaz. La température moins élevée permet l'alimentation d'un débit massique supérieur à la turbine de combustion, produisant une chaleur sensible plus élevée dans le gaz de synthèse pour compenser la perte de chaleur latente due à la température moins élevée.

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