Method and apparatus for optimized CO post-combustion in low NOx combustion processes
    1.
    发明申请
    Method and apparatus for optimized CO post-combustion in low NOx combustion processes 失效
    在低NOx燃烧过程中优化CO后燃烧的方法和装置

    公开(公告)号:US20050026097A1

    公开(公告)日:2005-02-03

    申请号:US10808255

    申请日:2004-03-24

    摘要: An improved process for burning a fuel to produce a flue gas is disclosed. The fuel is burned in a main combustion zone in the presence of a main combustion oxidant to produce combustion products. The combustion products are mixed in a post-combustion zone positioned downstream from the main combustion zone. The post-combustion zone is provided with a recirculation zone positioned proximate to the main combustion zone and an injection zone positioned downstream from the recirculation zone. An post-combustion oxidant is injected into the combustion products in the injection zone. At least one of (a) the residence time of the combustion products in the post-combustion zone, (b) the temperature range of the combustion products contained within the injection zone and (c) the oxygen content of the oxidant is controlled to optimize the level of CO and NOx in the flue gas.

    摘要翻译: 公开了一种用于燃烧燃料以产生烟道气的改进方法。 在主燃烧氧化剂存在的情况下,燃料在主燃烧区燃烧以产生燃烧产物。 燃烧产物在位于主燃烧区下游的后燃烧区域中混合。 后燃烧区设置有邻近主燃烧区定位的再循环区和位于再循环区下游的注入区。 将后燃烧氧化剂注射到注入区域中的燃烧产物中。 (a)燃烧产物在后燃烧区域的停留时间,(b)包含在喷射区域内的燃烧产物的温度范围和(c)氧化剂的氧含量的至少一个被控制以优化 烟气中CO和NOx的含量。

    Method and apparatus for optimized CO post-combustion in low NOx combustion processes
    2.
    发明授权
    Method and apparatus for optimized CO post-combustion in low NOx combustion processes 失效
    在低NOx燃烧过程中优化CO后燃烧的方法和装置

    公开(公告)号:US06913457B2

    公开(公告)日:2005-07-05

    申请号:US10808255

    申请日:2004-03-24

    摘要: An improved process for burning a fuel to produce a flue gas is disclosed. The fuel is burned in a main combustion zone in the presence of a main combustion oxidant to produce combustion products. The combustion products are mixed in a post-combustion zone positioned downstream from the main combustion zone. The post-combustion zone is provided with a recirculation zone positioned proximate to the main combustion zone and an injection zone positioned downstream from the recirculation zone. An post-combustion oxidant is injected into the combustion products in the injection zone. At least one of (a) the residence time of the combustion products in the post-combustion zone, (b) the temperature range of the combustion products contained within the injection zone and (c) the oxygen content of the oxidant is controlled to optimize the level of CO and NOx in the flue gas.

    摘要翻译: 公开了一种用于燃烧燃料以产生烟道气的改进方法。 在主燃烧氧化剂存在的情况下,燃料在主燃烧区燃烧以产生燃烧产物。 燃烧产物在位于主燃烧区下游的后燃烧区域中混合。 后燃烧区设置有邻近主燃烧区定位的再循环区和位于再循环区下游的注入区。 将后燃烧氧化剂注射到注入区域中的燃烧产物中。 (a)燃烧产物在后燃烧区域的停留时间,(b)包含在喷射区域内的燃烧产物的温度范围和(c)氧化剂的氧含量的至少一个被控制以优化 烟气中的CO和NO x水平。

    Steam-generating combustion system and method for emission control using oxygen enhancement
    3.
    发明申请
    Steam-generating combustion system and method for emission control using oxygen enhancement 有权
    使用氧气增强的蒸汽发生燃烧系统和排放控制方法

    公开(公告)号:US20050233274A1

    公开(公告)日:2005-10-20

    申请号:US11140868

    申请日:2005-05-31

    摘要: A steam-generating combustion system includes an oxygen enriched gas provided as at least part of an oxidant stream. A combustion chamber receives and combusts a fuel in the oxidant stream and generate steam. The combustion chamber generates flue gas having a flue gas volume which is smaller than a volume of flue gas generated by the combustion chamber when operated with air as the oxidant stream. A flue gas pollutant control system receives the flue gas from the combustion chamber and reduces at least one of particulate matter, SOx, NOx, and mercury. The reduction in flue gas volume allows the implementation of much smaller pollutant control equipment, since the size of the pollutant control units is mainly based on the volume or mass flow rate of flue gas to be treated. Moreover, the system including oxygen-enriched gas in the oxidant will lead to concentrated levels of the pollutants in the flue gas. The high concentrations of pollutants will enhance their absorption in the different pollutant control systems, improving removal efficiency for all species.

    摘要翻译: 蒸汽发生燃烧系统包括作为氧化剂流的至少一部分提供的富氧气体。 燃烧室接收并燃烧氧化剂流中的燃料并产生蒸汽。 燃烧室产生烟道气体,其烟道气体积小于当用空气作为氧化剂流运行时由燃烧室产生的烟道气体积。 烟道气污染物控制系统接收来自燃烧室的烟气,并且减少颗粒物质,SO x,NO x和汞中的至少一种。 烟气体积的减少允许实施更小的污染物控制设备,因为污染物控制单元的大小主要是基于要处理的烟道气体积或质量流量。 此外,包括氧化剂中的富氧气体的系统将导致烟道气中的污染物的浓度水平。 高浓度污染物将增强其在不同污染物控制系统中的吸收,提高所有物种的去除效率。

    Steam generation apparatus and methods
    4.
    发明授权
    Steam generation apparatus and methods 失效
    蒸汽发生装置和方法

    公开(公告)号:US06955051B2

    公开(公告)日:2005-10-18

    申请号:US10661389

    申请日:2003-09-11

    IPC分类号: F22B31/00 F01K7/34

    CPC分类号: F22B31/00 Y02E20/14

    摘要: Steam generation apparatus and methods are presented that are dedicated to oxygen-enriched air combustion of a fuel, wherein the oxygen concentration of the oxygen-enriched air may range from just above 21 percent to 100 percent. One apparatus comprises an oxygen-enriched air preheater through which oxygen-enriched air flows and exchanges heat indirectly with flue gas, creating a preheated oxygen-enriched air stream. The apparatus further comprises a boiler having a radiant section and a convection section, and other heat transfer units adapted to handle reduced flue gas flow rate and higher temperature flue gases than comparable air/fuel combustion boilers, thus allowing a smaller heat transfer surface area, a more compact design and a higher efficiency.

    摘要翻译: 提出了专用于燃料的富氧空气燃烧的蒸汽发生装置和方法,其中富氧空气的氧浓度可以在刚好高于21%至100%的范围内。 一种装置包括富氧空气预热器,富氧空气通过该预热器流动并间接地与烟道气交换热量,产生预热的富氧空气流。 该装置还包括具有辐射部分和对流部分的锅炉,以及适于处理比可比较的空气/燃料燃烧锅炉减少的烟道气流量和较高温度烟道气的其它热传递单元,从而允许较小的传热表面积, 更紧凑的设计和更高的效率。

    Process and apparatus for oxygen enrichment in fuel conveying gases
    5.
    发明授权
    Process and apparatus for oxygen enrichment in fuel conveying gases 有权
    燃料输送气体中富氧的方法和装置

    公开(公告)号:US07066728B2

    公开(公告)日:2006-06-27

    申请号:US10758607

    申请日:2004-01-15

    IPC分类号: F23M3/00

    摘要: An improved process for burning solid fuel particles in a combustion chamber and creating a flue gas is disclosed. The method comprises creating a fuel gas stream by mixing the solid fuel particles with a conveying gas, transporting the fuel gas stream through a fuel duct terminating at the combustion chamber at a fuel exit plane and injecting an oxygen stream through an injection device into said fuel gas at an oxygen injection location selected to create a mixing zone to mix the oxygen stream and the fuel gas stream immediately prior to or coincident with combustion of the fuel. Operating parameters of the process can be varied to optimally reduce NOx emissions.

    摘要翻译: 公开了一种用于在燃烧室中燃烧固体燃料颗粒并产生烟道气的改进方法。 该方法包括通过将固体燃料颗粒与输送气体混合来产生燃料气流,将燃料气流输送通过在燃料出口平面处终止于燃烧室的燃料管道,并将氧气流通过注射装置注入所述燃料 在氧气注入位置处的气体被选择以产生混合区域,以在燃料的燃烧之前或与燃料的燃烧紧密地混合氧气流和燃料气体流。 可以改变工艺的操作参数以最佳地减少NO x发射。

    Steam-generating combustion system and method for emission control using oxygen enhancement
    7.
    发明授权
    Steam-generating combustion system and method for emission control using oxygen enhancement 有权
    使用氧气增强的蒸汽发生燃烧系统和排放控制方法

    公开(公告)号:US07320288B2

    公开(公告)日:2008-01-22

    申请号:US11140868

    申请日:2005-05-31

    IPC分类号: F23J15/00

    摘要: A steam-generating combustion system includes an oxygen enriched gas provided as at least part of an oxidant stream. A combustion chamber receives and combusts a fuel in the oxidant stream and generate steam. The combustion chamber generates flue gas having a flue gas volume which is smaller than a volume of flue gas generated by the combustion chamber when operated with air as the oxidant stream. A flue gas pollutant control system receives the flue gas from the combustion chamber and reduces at least one of particulate matter, SOx, NOx, and mercury. The reduction in flue gas volume allows the implementation of much smaller pollutant control equipment, since the size of the pollutant control units is mainly based on the volume or mass flow rate of flue gas to be treated. Moreover, the system including oxygen-enriched gas in the oxidant will lead to concentrated levels of the pollutants in the flue gas. The high concentrations of pollutants will enhance their absorption in the different pollutant control systems, improving removal efficiency for all species.

    摘要翻译: 蒸汽发生燃烧系统包括作为氧化剂流的至少一部分提供的富氧气体。 燃烧室接收并燃烧氧化剂流中的燃料并产生蒸汽。 燃烧室产生烟道气体,其烟道气体积小于当用空气作为氧化剂流运行时由燃烧室产生的烟道气体积。 烟道气污染物控制系统接收来自燃烧室的烟气,并且减少颗粒物质,SO x,NO x和汞中的至少一种。 烟气体积的减少允许实施更小的污染物控制设备,因为污染物控制单元的大小主要是基于要处理的烟道气体积或质量流量。 此外,包括氧化剂中的富氧气体的系统将导致烟道气中的污染物的浓度水平。 高浓度污染物将增强其在不同污染物控制系统中的吸收,提高所有物种的去除效率。

    Steam generation apparatus and methods

    公开(公告)号:US06619041B2

    公开(公告)日:2003-09-16

    申请号:US10106547

    申请日:2002-03-26

    IPC分类号: F01K734

    CPC分类号: F22B31/00 Y02E20/14

    摘要: Steam generation apparatus and methods are presented that are dedicated to oxygen-enriched air combustion of a fuel, wherein the oxygen concentration of the oxygen-enriched air may range from just above 21 percent to 100 percent. One apparatus comprises an oxygen-enriched air preheater through which oxygen-enriched air flows and exchanges heat indirectly with flue gas, creating a preheated oxygen-enriched air stream. The apparatus further comprises a boiler having a radiant section and a convection section, and other heat transfer units adapted to handle reduced flue gas flow rate and higher temperature flue gases than comparable air/fuel combustion boilers, thus allowing a smaller heat transfer surface area, a more compact design and a higher efficiency.