Integrated gas turbine power generation system and process

Claim 1

A power generation system comprising: a circulating fluidized bed reactor including a combustion chamber, a particle separator connected to the outlet for combustion gases in the combustion chamber, and a substantially vertical channel, disposed between the lower end of the particle separator and the lower end of the combustion chamber, for conveying separated solid particles from the particle separator back into the combustion chamber; a gas turbine cycle including a gas compressor for compressing oxidizing gas, a heat transfer means for heating the compressed gas from the compressor, and a gas turbine connected through a duct to the heat transfer means, said heat transfer means including heat exchange passages disposed inside said substantially vertical channel for leading the compressed gas inside said passages in indirect contact with particles separated in the particle separator and flowing by gravity downwards outside said passages in a closed system without additional fluidization from the upper part of the channel to the lower part of said channel; and a duct leading expanded oxidizing gas from the gas turbine to the lower part of the combustion chamber.