| 摘要 |
A method of combusting sulfur-containing fuel in a circulating fluidized bed boiler (12) includes the steps of (a) feeding sulfur-containing fuel into a furnace (14) of the circulating fluidized bed boiler, (b) combusting the fuel (16) with oxidant gas (20, 22) consisting essentially of pure oxygen and circulated exhaust gas, so as to form exhaust gas having carbon dioxide and water as its main components, and (c) feeding calcium carbonate (18) containing material into the furnace so as to capture sulfur dioxide into calcium sulfate in the furnace. The temperature in the furnace is maintained above 870 °C. |
