At present,the pulverization system of 600 MW supercritical boilers in China mostly adopts a double inlet and double outlet steel ball coal mill positive pressure direct blowing system.In the preliminary design stage,each furnace will be equipped with two 100%capacity sealed fans.In practical operation,it was found that only a small amount of modification to the original sealed air and primary air systems is needed to eliminate the sealed fans.Once this plan is successfully implemented,it not only has significant energy-saving effects,but can also be widely promoted in similar units.
NETL
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