Process and apparatus for oxygen enrichment in fuel conveying gases
    21.
    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。

    Method and apparatus for optimized CO post-combustion in low NOx combustion processes
    24.
    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。

    Combustion process applicable to the manufacture of cement
    25.
    发明授权
    Combustion process applicable to the manufacture of cement 有权
    燃烧过程适用于水泥的制造

    公开(公告)号:US06375456B1

    公开(公告)日:2002-04-23

    申请号:US09599215

    申请日:2000-06-22

    IPC分类号: F27B1510

    CPC分类号: F27B7/36

    摘要: Combustion process especially applicable to cement works, in which process it is desired to use fuels which are difficult to ignite. To do so, a flame comprising a primary zone and a secondary zone is created. The hot primary zone is created using an oxy-fuel flame, which makes it possible to preheat the fuel which is difficult to ignite so as to raise it to the suitable temperature in the secondary zone where it burns, with air, in order to create the main flame. Applications: cement, metallurgy, glass, etc.

    摘要翻译: 燃烧过程特别适用于水泥工程,其中需要使用难以点燃的燃料。 为此,创建了包括主区和次区的火焰。 使用氧燃料火焰产生热的主区域,这使得可以预热难以点燃的燃料,从而将其升高到与空气一起燃烧的次级区域中的合适温度,以便产生 主要火焰。 应用:水泥,冶金,玻璃等

    Steam-generating combustion system and method for emission control using oxygen enhancement
    27.
    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。

    Process for burning sulfur-containing fuels
    28.
    发明申请
    Process for burning sulfur-containing fuels 有权
    燃烧含硫燃料的工艺

    公开(公告)号:US20050178302A1

    公开(公告)日:2005-08-18

    申请号:US10895153

    申请日:2004-07-20

    摘要: A process for burning a sulfur-containing fuel to produce a flue gas. The process includes introducing a sulfur-containing fuel into a combustion chamber, introducing an oxidant stream into the combustion chamber and mixing it with the sulfur-containing fuel to define a combustion zone, and introducing potassium carbonate into the combustion chamber. The sulfur-containing fuel is burned to produce the flue gas and potassium sulfate.

    摘要翻译: 一种用于燃烧含硫燃料以产生烟道气的方法。 该方法包括将含硫燃料引入燃烧室,将氧化剂流引入燃烧室并将其与含硫燃料混合以限定燃烧区,并将碳酸钾引入燃烧室。 燃烧含硫燃料以产生烟气和硫酸钾。

    Method for operating a boiler using oxygen-enriched oxidants

    公开(公告)号:US06314896B1

    公开(公告)日:2001-11-13

    申请号:US09437526

    申请日:1999-11-10

    IPC分类号: F23C900

    摘要: A method for operating a boiler using oxygen-enriched oxidants includes introducing oxygen-enriched air, or oxygen and air, in which the oxygen concentration ranges from about 21% to about 100% by volume. Fuel and oxygen-enriched air are introduced into the combustion space within the steam-generating boiler. The fuel and oxygen-enriched air is combusted to generate thermal energy. At least a portion of the flue gases are collected and at least a portion are recirculated through the boiler. In the steam-generating boiler, the oxygen-enriched oxidant is introduced at one or more locations within the radiation zone and the convection zone of the boiler. Additionally, flue gas is collected and recirculated into one or more locations within the radiation zone and/or the convection zone of the boiler. The amount of oxygen enrichment and the total gas flow through the boiler is controlled so as to maintain the heat transfer patterns within the boiler at the originally-design specification for operation by air combustion.

    Steam-generating combustion system and method for emission control using oxygen enhancement
    30.
    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。