Control methods and valve arrangement for start-up and...

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

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F02C 3/26 (2006.01) F01D 21/00 (2006.01) F02C 3/20 (2006.01) F02C 9/16 (2006.01)

Patent

CA 2117004

A power plant having a system for converting coal to power in a gas turbine comprises a coal fed pressurized circulating bed for converting coal to pressurized gases, a gas turbine having a compressor for pressurizing air for the pressurized circulating bed and expander for receiving and expanding hot combustion gases for powering a generator, a first fast acting valve for controlling the pressurized air, a second fast acting valve means for controlling pressurized gas from the compressor to the expander.

L'invention porte sur une centrale dotée d'un système de conversion du charbon pour alimenter en énergie une turbine à gaz. Elle comprend un lit fluidisé circulant et pressurisé, alimenté en charbon, qui convertit le charbon en gaz pressurisés; une turbine à gaz dotée d'un compresseur qui pressurise l'air provenant du lit circulant pressurisé et un expanseur qui reçoit et expanse les gaz chauds de combustion servant à alimenter une génératrice; une première soupape à action rapide servant à réguler l'air pressurisé; une seconde soupape à action rapide servant à réguler les gaz pressurisés qui passent du compresseur à l'expanseur.

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