Method to facilitate flameless combustion absent catalyst or high temperature oxident
    1.
    发明授权
    Method to facilitate flameless combustion absent catalyst or high temperature oxident 有权
    不含催化剂或高温氧化剂的无焰燃烧方法

    公开(公告)号:US06796789B1

    公开(公告)日:2004-09-28

    申请号:US10341942

    申请日:2003-01-14

    IPC分类号: F23L1500

    摘要: A method and apparatus whereby flameless combustion may be precipitated and sustained within the essentially oval combustion chamber of an integrated heater/burner apparatus. The invention provides for an air inlet and fuel source in combination with recirculating flue gas within the apparatus combustion chamber to precipitate and maintain flameless combustion of the combined gases along, and within, a narrowly defined boundary. Air is introduced to the oval combustion chamber via an air inlet. Fuel gas is combined with recirculating flue gases with continued heating of the recirculating flue gas, introduced air or both flue gas and air, until the temperature at the boundary interface between the air and inerted fuel gas exceeds an auto ignition temperature of the boundary interface components. A fuel gas stream absent a flamed portion thereof is combined with the recirculating flue gas and then allowed to diffuse with the air stream in a measure sufficient to sustain flameless combustion and chamber operational temperature of generally between 1500° F. and 1900° F. The essentially oval configuration of the integrated heater/burner allows for increased mass and circulation rates beyond that possible with heaters of the contemporary art and as a consequence thereof provides for uniform, complete and cooler combustion resulting in low NOx emissions.

    摘要翻译: 一种方法和装置,其中无焰燃烧可以在集成的加热器/燃烧器装置的基本上椭圆形的燃烧室内沉淀并维持。 本发明提供了一种空气入口和燃料源,与装置燃烧室内的再循环烟道气结合,以便在狭窄界定的范围内沉淀和维持组合气体的无焰燃烧。 空气通过空气入口引入椭圆形燃烧室。 燃料气体与再循环烟道气结合,继续加热再循环烟道气,引入空气或烟气和空气,直到空气和惰性燃料气体之间的边界界面处的温度超过边界界面组分的自动点火温度 。 没有其燃烧部分的燃料气流与再循环烟道气组合,然后允许与气流一起扩散,足以维持无焰燃烧和通常在1500°F至1900°F之间的室操作温度。 集成加热器/燃烧器的基本上椭圆形构造允许超过当代艺术的加热器可能的质量和循环速率,并且其结果是提供均匀,完整和较冷的燃烧,导致低NOx排放。