| 摘要 |
PROBLEM TO BE SOLVED: To prevent generation of slagging in a pulverized coal burner. SOLUTION: A nozzle body 6 opened toward a furnace 1 and blowing out pulverized coal along with combustion air 14 has an outer tube nozzle 31, and inner tube nozzle 32 provided concentrically with the outer tube nozzle in an interior of the outer tube nozzle. Tips 31c, 32c of the outer tube nozzle and the inner tube nozzle are shaped like straight pipes, the combustion air including the pulverized coal is blown out through a fuel conductive space 10 formed between the outer tube nozzle and the inner tube nozzle, and each of combustion auxiliary air 27 and combustion auxiliary air 26 is blown out from each of an interior of the inner tube nozzle and a periphery of the outer tube nozzle. COPYRIGHT: (C)2008,JPO&INPIT
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