| 摘要 |
PROBLEM TO BE SOLVED: To provide a pulverized coal combustion boiler device capable of safely treating a coal pulverizer pyrite in a dry system with a simple constitution. SOLUTION: This pulverized coal combustion boiler device has a coal pulverizer 5 for generating pulverized coal, an exhaust gas recirculating duct 3 for recirculating exhaust gas in a furnace from a furnace bottom part 9 by extracting a part of the exhaust gas generated by burning the pulverized coal 5 in the furnace 1, and a dry furnace bottom ash treating device 8 arranged in the vicinity of the furnace bottom part; and is characterized by arranging a carrying means 7 in the exhaust gas recirculating duct 3 for carrying the pyrite discharged from the coal pulverizer 5 in a dry system up to the dry furnace bottom ash treating device 8. COPYRIGHT: (C)2006,JPO&NCIPI
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