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    • 8. 发明公开
    • BOILER DEVICE
    • 锅炉设备
    • EP2664847A1
    • 2013-11-20
    • EP12734688.0
    • 2012-01-12
    • BABCOCK-HITACHI K.K.
    • ORII, AkihitoOKAZAKI, Hirofumi
    • F23C7/02F23C6/04F23L9/02
    • F23C7/02F23C6/04F23C7/004F23C2201/101F23C2900/06041F23C2900/07021F23D1/00F23D2201/20F23D2900/01001F23L9/02F23M5/08
    • Areliable and cost-effective boiler equipped with a sound air supply nozzle which enables the following is provided: even when there is a gap between the nozzle provided in a through hole communicating with the interior of a furnace and the through hole, a strong swirl flow along the inner surface of the furnace wall can be formed; and burnout due to radiant heat can be suppressed. The air supply nozzle has the through hole in the furnace wall comprised of a water pipe, the nozzle supplying air is inserted into the through hole, and there is the gap between the nozzle and the through hole. The air supply nozzle is so configured that the position of the tip of the nozzle is located at a distance of 0.8 times the nozzle inside diameter or more away from the furnace wall inner surface and a tangential velocity component is given to gas jetting out of the nozzle.
    • 配备有良好的空气供应喷嘴的可靠且具有成本效益的锅炉提供如下:即使当设置在与炉内部连通的通孔中的喷嘴与通孔之间存在间隙时,强旋流 沿炉壁内表面可形成; 并且可以抑制由辐射热引起的燃尽。 供气喷嘴在炉壁上具有由水管构成的通孔,供给喷嘴的空气插入通孔中,并且在喷嘴和通孔之间存在间隙。 供气喷嘴构成为,喷嘴前端的位置位于喷嘴内径的0.8倍以上,离开炉壁内表面的位置,对喷出的气体赋予切向速度分量 喷嘴。
    • 9. 发明公开
    • A METHOD OF REDUCING NITROGEN OXIDES OF A PULVERIZED COAL BOILER USING INNER COMBUSTION TYPE BURNERS
    • 用于减少有内BURNING燃烧器氮氧化物使用防尘燃煤锅炉
    • EP2253884A1
    • 2010-11-24
    • EP08757456.2
    • 2008-06-18
    • Yantai Longyuan Power Technology Co. Ltd.
    • WANG, YupengTANG, HongMIAO, YuwangNIU, TaoMA, HuaijunLIU, PengWANG, XinguangZHANG, XiaoyongZHANG, YubinZHANG, ChaoqunDONG, YongshengCUI, Xingyuan
    • F23C5/00F23D1/00
    • F23D1/00F23C5/08F23C6/04F23C2201/101F23C2900/03005F23D2201/10F23D2201/20
    • A method for decreasing nitrogen oxides of a pulverized coal boiler using burners (2) of internal combustion type comprising: designing or changing all or part of burners of the pulverized coal boiler as internal combustion type burners (2), in which the ignition sources may be plasma generators (1) or ignition devices such as small oil guns etc., and the power thereof can be adjusted for controlling the ignition intensity in the burners (2). The burners (2) are interiorly divided into several stage combustion chambers (5) and are provided with pulverized coal concentrators (4) which do deep fuel staging in the burners (2). During the operation of the boiler, the ignition sources always keep in a working state, and the pulverized coal in the burners (2) is ignited stage by stage and is burnt in advance; decreasing the secondary air amount in the primary combustion zone (22) so that the primary combustion zone (22) is in a relatively strong reducing atmosphere and a high temperature and oxygen-deficient condition for inhibiting the generation of NOx is created; and supplying the remaining air from the upper of furnace of the boiler in the form of over-fire air, so that a deep air staging is carried out in the total furnace. Thus, the NOx generation of combustion can be effectively controlled on the premise of not decreasing the boiler efficiency.
    • 一种用于降低使用的燃烧器的煤粉锅炉的氮氧化物的方法(2)的内燃类型包括:设计或改变煤粉锅炉内燃式燃烧器的燃烧器的全部或部分(2),其中,所述点火源可以 是等离子发生器(1)或点火装置:如小油枪等,并且它们的功率可以用于控制在燃烧器(2)的点火强度进行调整。 燃烧器(2)在内部分成若干阶段燃烧室(5),并且设置有煤粉集中器(4),其在燃烧器做深燃料分级(2)。 锅炉的手术过程中,点火源始终保持处于工作状态,并且在燃烧器的粉煤(2)是由阶段点燃阶段和提前燃烧; 减少在初级燃烧区(22),二次空气量为所做的主燃区(22)是相对较强的还原性气氛和高的温度和氧不足型的条件被创建用于抑制NOx的产生; 供应和从上中火上风的形式锅炉的炉的剩余空气,所以也深深的空气分级是在总炉中进行。 因此,NO x生成的燃烧可以有效地控制在不降低锅炉效率的前提下。