Method for adjusting a burner during the start-up phase in a furnace
operated by means of flue gas recirculation
    1.
    发明授权
    Method for adjusting a burner during the start-up phase in a furnace operated by means of flue gas recirculation 失效
    在燃烧气体再循环运行的燃烧器中启动阶段调节燃烧器的方法

    公开(公告)号:US5207569A

    公开(公告)日:1993-05-04

    申请号:US868429

    申请日:1992-04-15

    IPC分类号: F23N1/02

    摘要: A method for adjusting a burner during the start-up phase in a furnace operated with recirculated flue gas (3), the furnace is subjected to a pre-flushing period prior to start-up. The furnace is started with a constant fuel amount (5), the fresh air (2) aspirated from the outside at first being reduced by means of a control. In the beginning, the stoichiometric or near-stoichiometric air balance for combustion is provided by recirculation of the fresh air (4) in the furnace. Following ignition of the burner, an increase of fresh air (2) from the outside will take place as a function of the diminishing fresh air (4) from the furnace. The diminishing fresh air (4) recirculated from the furnace is replaced by also recirculated flue gases (3) in such a way that at the end of the start-up phase only a combustion air mixture consisting of fresh air (2) from the outside and recirculated flue gases (3) is used.

    摘要翻译: 在利用再循环烟道气(3)操作的炉中的启动阶段期间调节燃烧器的方法,该炉在启动之前经历预冲洗期。 炉子以恒定的燃料量(5)开始,首先通过控制减少从外部吸出的新鲜空气(2)。 一开始,用于燃烧的化学计量或接近化学计量的空气平衡是通过在炉中再循环新鲜空气(4)来提供的。 随着燃烧器点燃,随着来自炉子的新鲜空气(4)的减少,将从外部增加新鲜空气(2)。 从炉再循环的减少的新鲜空气(4)也被再循环的烟道气(3)所替代,使得在启动阶段结束时,只有来自外部的新鲜空气(2)组成的燃烧空气混合物 并使用再循环烟道气(3)。

    Firing installation
    2.
    发明授权
    Firing installation 失效
    点火安装

    公开(公告)号:US5423674A

    公开(公告)日:1995-06-13

    申请号:US253158

    申请日:1994-06-02

    IPC分类号: F23C7/00 F23C9/00 F24C5/00

    摘要: A firing installation includes a combustion space fed by premixing burners having combustion air inlet slots along the length of the burner bodies that create a tangentially directed inflow of combustion air. Fresh air guides are positioned along the inlet slots upstream to guide fresh air into the slots, and include an end plate having a plurality of perforations that act as air injection nozzles. Movement of fresh air through the nozzles creates a vacuum that draws combustion air from the combustion space into the inlet slots where it mixes with the fresh air to form a combustion gas mixture.

    摘要翻译: 燃烧装置包括燃烧空间,该燃烧空间通过具有燃烧空气入口狭缝的预燃混合器燃烧器沿燃烧器主体的长度供给,产生切向定向的燃烧空气流入。 新鲜空气引导件沿着入口狭槽上游定位,以将新鲜空气引导到狭槽中,并且包括具有多个穿孔作为空气喷射喷嘴的端板。 新鲜空气通过喷嘴移动产生真空,其将燃烧空气从燃烧空间吸入入口狭缝,在那里与新鲜空气混合以形成燃烧气体混合物。

    Burner and ignitor arrangement
    3.
    发明授权
    Burner and ignitor arrangement 失效
    燃烧器和点火器安排

    公开(公告)号:US5249955A

    公开(公告)日:1993-10-05

    申请号:US902735

    申请日:1992-06-23

    摘要: In a burner for operating an internal combustion engine, a combustion chamber of a gas turbine or firing equipment, which consists essentially of at least two hollow conical partial bodies (1, 2) positioned one upon the other in the flow direction, the ignition of the air/fuel mixture forming in the hollow conical space (14) takes place by means of ignition electrodes (24a, 24b, 25a, 25b) which are placed at a location where there is a low flow velocity of the combustion air (15). This achieves the effect that the flame tongues starting from the electrode ends (25a, 25b) of the ignition electrodes (24a, 24b) can feed a flame front (7) forming at the outlet from the burner continuously and along ordered paths, i.e. paths directed in the flow direction with slight swirl in consequence of the motion of the combustion air (15), so that a stable reverse flow zone (6) forms.

    摘要翻译: 在用于操作内燃机的燃烧器中,燃气轮机或燃烧设备的燃烧室,其基本上由在流动方向上彼此定位的至少两个中空圆锥形部分体(1,2)组成,点火 在空心锥形空间(14)中形成的空气/燃料混合物通过放置在燃烧空气(15)的低流速的位置处的点火电极(24a,24b,25a,25b) 。 这实现了从点火电极(24a,24b)的电极端部(25a,25b)开始的火焰舌片能够连续地沿着有序路径(即,路径)供给形成在燃烧器出口处的火焰前沿(7) 由于燃烧空气(15)的运动而导致在流动方向上具有轻微的漩涡,使得形成稳定的反向流动区(6)。

    Method of operating a firing installation
    4.
    发明授权
    Method of operating a firing installation 失效
    操作安装方法

    公开(公告)号:US5147200A

    公开(公告)日:1992-09-15

    申请号:US619439

    申请日:1990-11-29

    摘要: In a firing installation, fresh air (6) is drawn in and mixed with a fraction of flue gases (7), which are taken from the combustion chamber (1), by means of a fan (5) which acts outside of the casing of the firing installation. The fresh air/flue gas mixture (8) thus formed flows on its way to the combustion chamber (1) through a first heat exchanger (2a) whose caloric preparation is accomplished by the flue gases (7) fed in. In the combustion chamber (1) itself, this mixture flows through a heat exchanger (2) placed there. Before the mixture (9) thus preheated is fed as combustion air to a burner (4), it undergoes a further mixing with flue gases via a number of jet injectors (3), which further increases the temperature of this combustion air (10), with an optimized flue gas fraction.

    摘要翻译: 在点火装置中,新鲜空气(6)被吸入并与从燃烧室(1)中取出的一部分烟道气(7)混合,借助于在壳体外部作用的风扇(5) 的射击安装。 这样形成的新鲜空气/烟道气混合物(8)通过第一热交换器(2a)流入燃烧室(1),第一热交换器(2a)的热量准备由进料的烟道气(7)完成。在燃烧室 (1)本身,这种混合物流过放置在那里的热交换器(2)。 在将如此预热的混合物(9)作为燃烧空气进料到燃烧器(4)之前,经由多个喷射喷射器(3)进一步与烟道气混合,这进一步增加了该燃烧空气(10)的温度, ,具有优化的烟气分数。

    Method for operating a pressure atomization nozzle
    5.
    发明授权
    Method for operating a pressure atomization nozzle 失效
    压力喷射喷嘴的操作方法

    公开(公告)号:US5165606A

    公开(公告)日:1992-11-24

    申请号:US709221

    申请日:1991-06-03

    申请人: Claude Pelet

    发明人: Claude Pelet

    CPC分类号: F23D11/40

    摘要: During the operation of a pressure atomization nozzle, the liquid fuel spray cone from the nozzle (4) is mixed upstream of a first orifice (3) which is placed downstream of the nozzle (4) in the outflow direction with a gaseous medium (7). In this process, the said spray cone is struck radially and/or virtually radially by the gaseous medium (7). In the process, the original spray angle from the nozzle, which is about 40.degree., is reduced to less than half. For this purpose it is sufficient if the gaseous medium (7) has a pressure of 20 mbar. The new spray angle is preserved across the first orifice (3), a second orifice (2) being provided in the outflow direction if required, the said second orifice functioning on the same principle as the first, i.e. in the case of the second orifice too, the mixture already produced is struck radially and/or virtually radially by the remaining proportion of the gaseous medium which was not used at the first orifice (3). The spray cone of the mixture is altered between a solid cone and a hollow cone by altering the spacings (D) between the nozzle (4) and the front wall of the first orifice (3) and between the rear wall of the first nozzle (3) and the front wall of the second orifice (2). In the case of two orifices (3, 2), their swallowing capacity is to be kept approximately equal.

    摘要翻译: 在压力雾化喷嘴的操作期间,来自喷嘴(4)的液体燃料喷雾锥体在第一孔口(3)的上游被混合,第一孔口(3)在喷嘴(4)的下游位于流出方向上与气体介质 )。 在该过程中,所述喷雾锥体被气体介质(7)径向和/或实质上径向地撞击。 在此过程中,喷嘴的原始喷雾角度约为40°,减小到不到一半。 为此,如果气体介质(7)具有20毫巴的压力就足够了。 新的喷射角度被保留在第一孔口(3)上,如果需要,沿着流出方向设置第二孔口(2),所述第二孔口以与第一孔口相同的原理工作,即在第二孔口 已经产生的混合物也通过未在第一孔口(3)处使用的气态介质的剩余比例径向地和/或实质上径向地被撞击。 通过改变喷嘴(4)和第一孔口(3)的前壁之间的间隔(D)和第一喷嘴的后壁之间的间隔(D),混合物的喷雾锥体在实心锥体和中空锥体之间改变 3)和第二孔口(2)的前壁。 在两个孔(3,2)的情况下,其吞咽能力应保持近似相等。