Apparatus and process for control of nitric oxide emissions from
combustion devices using vortex rings and the like
    51.
    发明授权
    Apparatus and process for control of nitric oxide emissions from combustion devices using vortex rings and the like 失效
    用于控制使用涡环等的燃烧装置的一氧化氮排放的装置和方法

    公开(公告)号:US5181475A

    公开(公告)日:1993-01-26

    申请号:US829430

    申请日:1992-02-03

    CPC classification number: F23C6/047 F23C1/00 F23C2201/101 F23C2201/301

    Abstract: An apparatus and method for reducing nitrogen oxide emissions from the products of combustion is provided in which a vortex generator introduces natural gas, or other fluid fuel into the upper portion of a combustion device. The fuel introduced forms vortices, such as vortex rings, and the fuel reacts with the nitrogen oxide in the combustion products to form ammonia-like compounds, hydrogen cyanide and similar compounds, and nitrogen. The ammonia and cyanide-like fragments react with additional amounts of nitrogen oxide in the combustion products to form nitrogen gas, water vapor and carbon dioxide. The vortex rings can be controlled and will maintain their integrity longer than puffs or simple jets of fuel.

    Abstract translation: 提供一种用于减少来自燃烧产物的氮氧化物排放的装置和方法,其中涡流发生器将天然气或其它流体燃料引入燃烧装置的上部。 引入的燃料形成漩涡,例如涡环,燃料与燃烧产物中的氮氧化物反应形成氨类化合物,氰化氢和类似化合物以及氮气。 氨和氰化物样碎片与燃烧产物中的额外量的氮氧化物反应以形成氮气,水蒸气和二氧化碳。 涡流环可以被控制,并且将保持它们的完整性比抽吸或简单的燃料喷射更长。

    Process for reducing nitric oxide emission during the combustion of
solid fuels
    52.
    发明授权
    Process for reducing nitric oxide emission during the combustion of solid fuels 失效
    在固体燃料燃烧期间减少氮氧化物排放的方法

    公开(公告)号:US5131335A

    公开(公告)日:1992-07-21

    申请号:US752464

    申请日:1991-08-26

    CPC classification number: F23C6/047 F23J7/00 F23C2201/101 F23C2201/301

    Abstract: In a process for reducing the nitric oxide emission during the combustion of solid fuels, the flue gases leaving from a main combustion zone (2) consecutively flow through two reduction zones (6,9). The first reduction zone (6) is operated hypostoichiometrically at temperatures above 1,000.degree. C. and while adding a reducing fuel, while the second reduction zone (9) is operated hyperstoichiometrically at temperatures from 950.degree. C. to 1,000.degree. C. and in the presence of nitric oxide-reducing substances.

    Abstract translation: PCT No.PCT / DE90 / 00985 Sec。 371日期1991年8月26日 102(e)日期1991年8月26日PCT 1990年12月21日PCT PCT。 WO91 / 10097 PCT出版物 日期:1991年7月11日。在固体燃料燃烧期间减少一氧化氮排放的方法中,从主燃烧区(2)离开的烟道气连续流过两个还原区(6,9)。 第一还原区(6)在高于1000℃的温度下进行低等值化学操作,同时加入还原燃料,而第二还原区(9)在950℃至1000℃的温度下以超化学计量运行, 存在一氧化氮还原物质。

    Hybrid fluidized bed and pulverized coal combustion system and a process
utilizing said system
    53.
    发明授权
    Hybrid fluidized bed and pulverized coal combustion system and a process utilizing said system 失效
    混合流化床和粉煤燃烧系统以及利用该系统的方法

    公开(公告)号:US4993332A

    公开(公告)日:1991-02-19

    申请号:US416312

    申请日:1989-09-13

    Abstract: A hybrid combustion system is provided combining advantages of a fluidized bed combustion portion and a pulverized coal combustion portion. The former portion includes a fluidized bed chamber, a coal mill without an air separator, a recycling duct connected to the coal mill, a coal supply duct, and a spray feeder. The fluidized coal combustion portion includes a pulverizing coal mill with air separator, a blowing duct for blowing ground coal, at least one pulverized coal burner and an air recycling duct for recycling combustion air. Fluidized bed combustion takes place in a lower part of the system and pulverized coal combustion takes place above the fluidized bed combustion. Each of the portions may be independently operated of the other. A main combustion chamber is common to both the fluidized bed portion and the pulverized coal portion. A related process is also described.

    Abstract translation: PCT No.PCT / HU88 / 00070 Sec。 371日期:1989年9月13日 102(e)日期1989年9月13日PCT提交1988年10月27日PCT公布。 出版物WO89 / 04940 日期:1989年6月1日。提供了一种混合燃烧系统,其结合流化床燃烧部分和粉煤燃烧部分的优点。 前一部分包括流化床室,没有空气分离器的煤磨机,连接到煤磨机的回收管道,煤供应管道和喷射进料器。 流化煤燃烧部分包括具有空气分离器的粉煤磨机,用于吹入煤的吹风管,至少一个粉煤燃烧器和用于再循环燃烧空气的空气循环管道。 流化床燃烧发生在系统的下部,粉煤燃烧发生在流化床燃烧之上。 每个部分可以彼此独立地操作。 主燃烧室对于流化床部分和粉煤部分是共同的。 还描述了相关过程。

    Method of burning fuel with lowered nitrogen-oxides emission
    55.
    发明授权
    Method of burning fuel with lowered nitrogen-oxides emission 失效
    用降低的氮氧化物排放燃烧燃料的方法

    公开(公告)号:US4329932A

    公开(公告)日:1982-05-18

    申请号:US156092

    申请日:1980-06-03

    CPC classification number: F23C6/047 F23K3/02 F23C2201/301

    Abstract: A method of burning fuel with lowered emission of nitrogen oxides comprises feeding pulverized fuel to the main burner in a combustion furnace and additionally feeding pulverized fuel to the region of the furnace where the first fuel is about to conclude its combustion, using inert gas with or without a low oxygen content as a conveying fluid, while supplying oxygen or air to a region downstream of the region for fuel addition.

    Abstract translation: 一种燃烧氮氧化物排放量较低的燃料的方法包括将粉煤燃料送入燃烧炉中的主燃烧器,并另外将粉煤燃料送入第一燃料即将结束燃烧的炉区,使用惰性气体与 而没有低氧含量作为输送流体,同时向该区域下游的区域供应氧气或空气用于燃料添加。

    High luminosity burner
    56.
    发明授权
    High luminosity burner 失效
    高亮度燃烧器

    公开(公告)号:US3656878A

    公开(公告)日:1972-04-18

    申请号:US3656878D

    申请日:1970-03-26

    CPC classification number: F23C6/047 F23C2201/301

    Abstract: A method and apparatus for burning, at increased luminosity intensities. A fuel such as natural gas whose combustion is normally characterized by a low luminosity flame. A first hydrocarbon fuel which may include a fixed amount of a free radical promoter is burned in a diffusion flame. The products of this combustion, which include soot particles, are burned along with a second fuel such as natural gas. The flame produced in this secondary combustion has a luminosity greater than that produced by the combustion of said second fuel in a single-stage burner.

    Abstract translation: 在增加的光度强度下燃烧的方法和装置。 一种诸如天然气的燃料,其燃烧通常以低亮度火焰为特征。 可以在扩散火焰中燃烧可以包含固定量的自由基促进剂的第一烃燃料。 包括烟灰颗粒在内的这种燃烧的产物与诸如天然气的第二种燃料一起燃烧。 在该次级燃烧中产生的火焰的亮度大于单级燃烧器中所述第二燃料的燃烧产生的火焰。

    LOW-NOx-BURNER
    60.
    发明申请
    LOW-NOx-BURNER 审中-公开

    公开(公告)号:US20170284659A1

    公开(公告)日:2017-10-05

    申请号:US15505768

    申请日:2015-08-11

    Abstract: The invention relates to a burner, particularly Low-NOx-burner, for generating a flame by combustion of a fuel, comprising: a tile (15, 15a, 15b) surrounding an opening (2, 2a, 2b) of the tile (15, 15a, 15b) extending along a burner axis (12), the tile (15, 15a, 15b) further comprising a front side (20) and a rear side (21) facing away from the front side (20), wherein the rear side (21) comprises an air inlet (10, 10a, 10b) connected to said opening for feeding air (A, A′, A″) into said opening (2, 2a, 2b), and wherein said front side (20) comprises a discharge outlet (9, 9a, 9b) connected to said opening (2, 2a, 2b) for discharging a flame (30) generated by the burner (1) into a surrounding area (S), and wherein the tile (15, 15a, 15b) further comprises an inside (22) facing said opening (2, 2a, 2b) as well as an outside (23) facing away from said opening (2, 2a, 2b). According to the invention the burner (1) further comprises at least one oxygen lance (5) extending along the burner axis (12) in a first recess (17) of said tile (15, 15a, 15b), the at least one oxygen lance (5) having an ejection nozzle (6) at an end region of the at least one oxygen lance (5) for ejecting oxygen (O), particularly such that the oxygen (O) is at first ejected into a colder flue gas region (31) surrounding the relatively hotter flame (30) generated by the burner (1). Further, the invention relates to a method for generating a flame (30).

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