Agglomeration of Ash in Fluidized Beds Gasifying Coal: The Godel Phenomenon

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Science  21 Feb 1975:
Vol. 187, Issue 4177, pp. 646-648
DOI: 10.1126/science.187.4177.646


In a bed of anthracite or bituminous coke fluidized by air at 10 to 15 meters per second at 1200° to 1400°C, molten ash forms beads on the surface of a coke particle, some exuding from its interior. The beads merge and detach them-selves to grow further as loose fluidized ash agglomerates of low carbon content.