| 摘要 |
PROBLEM TO BE SOLVED: To provide a boiler device to form a heat transfer part in a compact manner, a eliminate a limit of a gas temperature at a furnace outlet, and form a whole in a compact manner. SOLUTION: This boiler device comprises a mill 1 to effect milling of coal, a primary air piping 2 to cause conveyance of milled coal (pulverized coal) by air and feed the milled coal as a flow of pulverized coal to the wake side; a burner 3 to cause combustion of a flow of pulverized coal from the primary air piping 2 together with combustion air through a combustion air piping 30; a furnace 4 in which burners 3 are arranged; a furnace heat transfer wall 31 to absorb heat from combustion gas generated by combustion in the furnace 4 and generate steam; a heat transfer pipe 5 situated in a gas flow passage connected to the furnace 4; an environment device 6, such as a desulfurizing device, to treat exhaust gas from a boiler outlet lowered in temperature through heat absorption of the heat transfer pipe 5; and a chimney 7 to discharge exhaust gas, brought into a harmless state, to the atmosphere by environment device 6. In a so formed boiler device, a high temperature dust collecting device 11 is situated in an upstream side from a rear heat transfer pipe 5 part.
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