Manner null in order to maintain the nominal operating temperature of the flue gas in the PFBC power plant

摘要

The invention relates to a method for maintaining a nominal working temperature of the flue gases in a PFBC power plant during partial load operation of the plant by arranging firing of a complementary fuel in the flue gases downstream of the uppermost tubes in the bed. This firing is achieved by injecting a fuel, mixing it well into the flue gases, and igniting it. By the combustion of the complementary fuel, the temperature of flue gases leaving the combustor is raised to the nominal working temperature of the flue gases. During continuous combustion of a complementary fuel downstream of the uppermost tubes in the bed, this method also makes possible an optimization of temperature levels for the bed and the flue gases by allowing these levels to deviate somewhat from one another.