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Burnup manner and pulverized coal firing equipment and pulverized coal firing burner null
Burnup manner and pulverized coal firing equipment and pulverized coal firing burner null
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机译:燃尽方式和煤粉燃烧设备及煤粉燃烧器null
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摘要
PROBLEM TO BE SOLVED: To provide a combustion device which forms stable combustion flames only by the supply of pulverized coal or a pulverized coal combustion burner even under the condition which burns only nonflammable pulverized coal or under a low load condition. ;SOLUTION: An air nozzle 11, which feeds air in a swirling current, is laid out around the outer periphery of a fuel nozzle 10 which conveys pulverized coal by air. The fuel nozzle 10 forms a first recirculating current around the edge of the nozzle while the swirling current forms a second recirculating current on the outer periphery of a fuel jet, and forms a third recirculating current 22 in the peripheral direction of the second recirculating current 21 and the current 22, which is partially formed integrally with the first recirculating current 20. Since the third recirculating current 22 feeds a high temperature gas of the second recirculating current 21 to the fuel nozzle, it is possible to enhance the stability of flames of pulverized coal.;COPYRIGHT: (C)1997,JPO
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