PROCESS OF COMBUSTING COAL IN A CIRCULATING FLUIDIZED BED

摘要

Granular coal is combusted in a circulating fluidized bed system comprising a combustion chamber, a separator and a recycle line for recycling solids from the separator to the combustion chamber. Gas from carbonization is added to the oxygen-containing combustion gas withdrawn from the combustion chamber and is at least partly combusted in said combustion gas to increase the temperature of the combustion gas to about 850 DEG to 1200 DEG C. The gas from carbonization is produced by the heating of granular coal.