A liquefied natural gas (lng) fueled combined cycle power...

F - Mech Eng,Light,Heat,Weapons – 01 – K

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F01K 23/10 (2006.01) F02C 6/18 (2006.01) F02C 7/143 (2006.01) F17C 9/02 (2006.01) F17C 9/04 (2006.01)

Patent

CA 2222607

A process and system which improves the capacity and efficiency of a power plant. An LNG supply system (12) fuels the plant. Gasified LNG in a combustor (30) mixes with the air from an air compressor (28) to provide the hot combustion gas for a gas turbine (32). The expanding LNG is used to chill (16) a heat exchange fluid, e.g. water, which heat exchange fluid cools (24) and densifies the intake air for the air compressor (28). Subsequently, the heat exchange fluid is used in another heat exchange step (46) and is then re-chilled and recycled to cool and densify the intake air.

Procédé et système améliorant la puissance et le rendement d'une centrale. Celle-ci comporte un système d'alimentation en gaz naturel liquéfié. Ledit gaz, sous forme gazéifiée, se mélange dans un brûleur à l'air provenant d'un compresseur pour fournir un gaz de combustion chaud destiné à une turbine à gaz. La détente du gaz liquéfié sert à refroidir un fluide caloporteur, par exemple de l'eau, qui à son tour refroidit et densifie l'air d'aspiration entrant dans le compresseur. Le fluide caloporteur sert ensuite dans une autre étape d'échange de chaleur puis il est soumis à un nouveau refroidissement et recyclé pour refroidir et densifier l'air d'aspiration.

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