Abstract:
Combustion system comprising a furnace having a thermal load and a combustion atmosphere disposed therein; one or more fuel lances adapted to inject fuel into the combustion atmosphere; and one or more igniters associated with the one or more fuel lances and adapted to ignite the fuel injected by the one or more fuel lances into the combustion atmosphere.
Abstract:
This invention is a directed to combustion apparatus incorporating a combustion chamber, a precombustion chamber and a multi-wall burner and a process for effecting combustion of gases, particularly feed gases containing gases that, on combustion, form solid oxidation products, i.e., solid-forming gases. A pathway is formed between the exterior of the precombustion chamber and the interior of said combustion chamber, whereby said pathway permits introduction of a secondary oxidant into the interior portion of the combustion chamber for facilitating combustion of said solid forming gas.
Abstract:
Burner assembly comprising (a) an elongated body having a periphery, a discharge end adjacent a combustion zone, and an axis, wherein the axis extends into the combustion zone; (b) one or more oxidant nozzles disposed at the discharge end of the elongated body and adapted to discharge a gaseous oxidant into the combustion zone; and (c) one or more fuel nozzles disposed at the discharge end of the elongated body and adapted to discharge a fuel into the combustion zone. At least one of the oxidant and fuel nozzles is characterized by a shape factor, σ, that is greater than about 10, wherein σ is a dimensionless parameter defined as σ=P2/2A where P is the perimeter dimension of the discharge opening and A is the area of the discharge opening.
Abstract translation:燃烧器组件,其包括(a)具有周边的细长主体,与燃烧区相邻的排出端和轴,其中所述轴延伸到所述燃烧区中; (b)一个或多个氧化剂喷嘴,设置在细长体的排放端,并适于将气态氧化剂排放到燃烧区中; 和(c)一个或多个燃料喷嘴,设置在细长主体的排放端,并适于将燃料排放到燃烧区。 氧化剂和燃料喷嘴中的至少一个的特征在于大于约10的形状因子σ,其中σ是定义为σ= P 2 / 2A的无量纲参数,其中P是 排出口的周长尺寸A为排出口的面积。
Abstract:
The present invention relates to a method and furnace for generating straightened flames in a steam methane reformer or ethylene cracking furnace where fuel-staged burners are used. Fuel staging may be used for reducing NOx emissions. Criteria for generating straightened flames are provided. These criteria relate to oxidant conduit geometry and furnace geometry. Techniques for modifying the furnace and/or burners to achieve these criteria are also provided.
Abstract:
Combustion system comprising a furnace having a thermal load and a combustion atmosphere, wherein the thermal load and combustion atmosphere are disposed within the furnace; one or more fuel lances adapted to inject fuel into the combustion atmosphere; and one or more igniters associated with the one or more fuel lances and adapted to ignite the fuel injected by the one or more fuel lances.
Abstract:
A combustion device and combustion method for mixing a fuel and a fluid to form a diluted fuel mixture and passing the diluted fuel mixture through a nozzle. The nozzle comprises a nozzle body having an inlet face, an outlet face, and an inlet flow axis passing through the inlet face and the outlet face, and one or more slots extending through the nozzle body from the inlet face to the outlet face, each slot having a slot axis.