THREE-DIMENSIONAL MODELING AND SIMULATION OF AN ASH MELTING FURNACE FOR DESIGN OF SLUDGE MELTING FURNACES

概要

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A three-dimensional, three-phase model for the melting of solid particles in a coke moving-bed furnace was made for the improvement of the design and operation of sludge melting furnaces. The melting characteristics of ash particles were studied as the first approximation, instead of sludge particles, owing to the uncertainty of the physical and chemical properties of the latter. The simultaneous transfer of momentum, heat and chemical components with variable physical properties was simulated in this model. The Patankar’s SIMPLER method was employed for the numerical computation. The solutions were visualized on arbitrarily chosen cross-sections of the furnace using a color graphic display system. The numerical experiment for ash-melting characteristics using this code can provide valuable information necessary for the design and operation of practical sludge melting furnaces. This numerical prediction, based on the test operating data of a commercial furnace, is successful in determining whether the furnace can melt sludge with a reasonable rate of coke consumption.
社団法人化学工学会の論文
1993-08-20