Abstract
This study is based on high-temperature flue gas containing condensed dust and the dust removal of granular bed. The effects of adhesion temperature, filter plate material (99% and 85% corundum), and dust materials (tin, ferric oxide, and fly ash mixed with sodium chloride) on the desorption stress of dust on the filter surface are explored through desorption stress tests. Results show that the desorption force of tin peaks at 800 °C. Adhesion at <900 °C is not observed for ferric oxide but occurs at >900 °C for fly ash blended with sodium chloride. The mixture adheres on the filter surface at >800 °C, and desorption force increases as adhesion temperature and sodium chloride proportion increase. Large desorption stress occurs on the extremely rough surface of the filter material.
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