| 摘要 |
PROBLEM TO BE SOLVED: To provide a burner structure capable of eliminating or suppressing a problem of abrasion, and providing the concentration separation of fuel by a simple constitution. SOLUTION: In the burner structure including a fuel pipe 2 carrying primary air and pulverized fuel, a wind box 3 arranged in an outer side of the fuel pipe 2 to supply secondary air, and a nozzle body 4 provided in tip outlet part of the fuel pipe 2 and the wind box 3 to input the pulverized fuel and air into a furnace, a bent pipe 21 bending the fuel pipe 2 by 90 degrees or larger in an upstream side neighborhood of the wind box 3 is provided, and a plurality of straightening vanes 30 preventing the circumferential dispersion of concentrated particles is provided on a fuel pipe straight pipe 22 positioned downstream of the bent pipe 21 and in the wind box 3. COPYRIGHT: (C)2009,JPO&INPIT
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