Abstract
A fibrous, layered Al2O3/SiO2-based ceramic candle filter has been tested for pressurized fluidized bed combustion (PFBC) hot gas cleaning at the Otaniemi PFBC test rig. The fuels used have been bituminous coal and peat. The exhaust gas from a pressurized fluidized bed reactor was passed through two cyclones before entering the ceramic filter unit, which was operated at a temperature range from 853 to 1013 K (580 to 740 °C) and at a pressure range from 0.6 to 1.0 MPa. Total exposure time of the two candle filter elements was about 340 hours.
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