METHOD FOR FIRING COAL IN PYRO-PROCESSES USING DIRECT HEAT RECUPERATION FROM A CROSS FLOW HEAT EXCHANGER

摘要

A METHOD FOR FIRING COAL IN PYRO-PROCESSES USING DIRECT HEAT RECUPERATION FROM A CROSS FLOW HEAT EXCHANGE Coal is placed upon hot mineral solids being cooled by an upward flow of ambient air; the coal is dried, ignited and completely combusted under process conditions associated with cooling after firing. The hot off-gas from cooling is returned directly to the firing section or other sections of the process as heat.