High-temperature air combustion burner unit

    公开(公告)号:JP5549747B2

    公开(公告)日:2014-07-16

    申请号:JP2012555833

    申请日:2012-01-27

    Abstract: The burner device for high-temperature air combustion according to the present invention is equipped with a thermal insulation portion (5) that is provided facing a furnace (1) and has a throat (6); a burner nozzle (9) that is provided at the axial center of this throat and that injects a pulverized coal mixed flow (38) into the furnace through the throat; a windbox (8) that is provided so as to house this burner nozzle; an air register (16) that is provided at the distal end of the burner nozzle and that injects low-temperature secondary air from the windbox to the throat; a high-temperature air nozzle (23), one end of which opens into the furnace through the heat insulation portion; and a combustion air switching means (16, 24) that switches between injecting low-temperature secondary air to the throat through the air register and injecting high-temperature secondary air to the furnace interior through the high-temperature air nozzle, in which in steady combustion, low-temperature secondary air is injected to the throat through the air register by the combustion air switching means and a pulverized coal mixed flow is injected from the burner nozzle, and in high-temperature air combustion, high-temperature secondary air is injected to the furnace interior through the high-temperature air nozzle by the combustion air switching means and a pulverized coal mixed flow is injected from the burner nozzle.

    Oxygen burning boiler and method for controlling oxygen burning boiler
    8.
    发明专利
    Oxygen burning boiler and method for controlling oxygen burning boiler 有权
    氧气锅炉和控制氧气锅炉的方法

    公开(公告)号:JP2011021781A

    公开(公告)日:2011-02-03

    申请号:JP2009165492

    申请日:2009-07-14

    Abstract: PROBLEM TO BE SOLVED: To provide a highly reliable oxygen burning boiler, suppressing a cost required for conversion when a coal fired boiler operated as an existing air burning boiler is operated as the oxygen burning boiler, and enabling stable operation for a long time by preventing a damage of the oxygen burning boiler caused by high temperature gas.
    SOLUTION: In the oxygen burning boiler 1, installed are: an oxygen separating device 23 for manufacturing oxygen by separating air and feeding the oxygen to the oxygen burning boiler 1; and a recirculation fan 26 for feeding and recirculating part of exhaust gas discharged from the boiler to the oxygen burning boiler 1. A control device 150 is installed to calculate heat absorption amount obtained by steam in a furnace 1a from measurement values detected by steam, pressure and flow sensors 14c-14f installed in each heat exchanger of the furnace 1a of the oxygen burning boiler 1 and control the operation of the recirculation fan 26 so that the calculated heat absorption amount of the furnace 1a becomes intended set heat absorption amount.
    COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题:为了提供高可靠性的氧气燃烧锅炉,当作为现有空气燃烧锅炉运行的燃煤锅炉作为氧燃烧锅炉运行时,抑制转换所需的成本,并且能够长时间稳定运行 通过防止由高温气体引起的氧燃烧锅炉的损坏的时间。 解决方案:在氧燃锅炉1中,安装有:氧分离装置23,用于通过分离空气并将氧气供给到氧燃锅炉1来制造氧气; 以及再循环风扇26,用于将从锅炉排出的废气的一部分供给到氧燃锅炉1中。安装控制装置150,以计算由炉1a中的蒸汽得到的吸热量,由蒸汽,压力 以及安装在氧燃烧锅炉1的炉1a的各热交换器中的流量传感器14c-14f,并控制再循环风扇26的运转,使得计算出的炉1a的吸热量成为设定的吸热量。 版权所有(C)2011,JPO&INPIT

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