PROCESS AND APPARATUS FOR GENERATING ELECTRIC POWER FROM COAL

摘要

A process for generating electrical energy from the combustion of a solid fuel is described wherein heat obtained from the combustion is used to operate generating means for electrical energy. The improvement comprises combusting a portion of said solid fuel in a fluidized bed combustion zone and the remaining portion of said solid fuel in a cyclone combustion zone, indirectly heat exchanging hot combustion gases produced in said fluidized zone with air to obtain hot air for expansion in a gas turbine, passing waste combustion gases from said fluidized zone to said cyclone zone and indirectly heat exchanging hot combustion gases in said cyclone zone with steam to obtain high pressure, super-heated steam for expansion in a steam turbine.