| 摘要 |
A method and a device for limiting temperature variations in a plant for combustion in a pressurized fluidized bed, a PFBC - Pressurized Fluidized Bed Combustion - plant, with a combustor (10) in the form of a pressurized fluidized bed, air paths (1) in which a compressor (13) is arranged to pressurize air supplied to the fluidized bed, flue gas paths (2) in which energy contained in the flue gases is extracted with a gas turbine (14), and flue gas economizers (15, 16) by means of which residual heat is extracted from the flue gases, and a feedwater/steam system (3) in which heat is utilized. Temperature variations in pressurized air supplied to the fluidized bed are essentially eliminated with a heat exchanger (17) arranged in the air paths (1). The heat exchanger is connected to the high temperature section of the feedwater/steam system (3) of the PFBC plant. |
