GASIFICATION OF COAL BY A PILOT FLAME IN A MODIFIED FLUIDIZED-BED

Coal is successfully gasified in the presence of a pilot flame in a modified fluidized bed. Except for the pilot flame, no external heat is required to operate this gasifier. The results showed that increasing the solid-to-air ratio in the feed increased the temperature and the products, carbon monoxide and hydrogen. About 95% of the volatile materials and 80% of the fixed carbon of the feed coal could be gasified by this pilot-flame gasification method. The ash could be efficiently separated during gasification by a distributor within the dead-zone collector of this gasifier.