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公开(公告)号：US4785746A
公开(公告)日：1988-11-22
申请号：US891975
申请日：1986-08-01
CPC分类号： F23D1/005 , B05B7/0466 , F23C3/008 , F23C6/00
摘要： Disclosed is an apparatus for introducing slurry fuels into the combustion zone of high power density combustors, boilers, industrial furnaces or steam generators. Having the general form of an elongate cylinder, the apparatus comprises a central conduit for a flow of particulate carbonaceous fuel suspended in a carrier liquid, and separate annular passageways for an atomizing fluid and a coolant. The slurry flows longitudinally to about the position where it is to be dispersed into the combustion zone, is there divided into a plurality of streams that are deflected to flow individually through a corresponding plurality of radially extending passages and slurry portholes spaced apart around the periphery of the cylindrical structure. Just before these streams leave the injector they are each impinged by a higher-velocity longitudinal flow of atomizing fluid which breaks the filaments of viscous slurry into minute droplets. Each droplet consists of particles of carbonaceous fuel suspended in liquid and is small enough to be heated and ignited closely adjacent the periphery of the injector.
摘要翻译： 公开了一种用于将浆料燃料引入高功率密度燃烧器，锅炉，工业炉或蒸汽发生器的燃烧区的装置。 具有细长圆柱体的一般形式，该装置包括用于悬浮在载体液体中的颗粒状碳质燃料流的中心导管，以及用于雾化流体和冷却剂的单独的环形通道。 浆料纵向流动到其分散到燃烧区域的位置附近，分为多个流，其被偏转以单独流过相应的多个径向延伸的通道和围绕周边间隔开的浆料孔 圆柱形结构。 在这些流离开喷射器之前，它们都被雾化流体的较高速度的纵向流动冲击，其将粘性浆料的细丝断裂成微小的液滴。 每个液滴由悬浮在液体中的碳质燃料颗粒组成，并且足够小，以便与喷射器的周边相邻地加热和点燃。
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公开(公告)号：US4660478A
公开(公告)日：1987-04-28
申请号：US670416
申请日：1984-11-13
CPC分类号： F23C3/008
摘要： In a combustion zone a fuel injector is immersed in a mixture of oxidant and products of combustion having a temperature of about 2000 degrees F. or higher. In order to maintain rapid and stable combustion, it is desirable to avoid excessive absorption of thermal energy from this mixture. To that end, the present invention provides means for impeding transfer of heat to the fuel injector from the adjacent mixture, such that portions of the mixture immediately adjacent the fuel injector may be kept at a temperature of approximately the ash-fusion temperature of the fuel, or higher, while the interior of the fuel injector is kept at a temperature substantially below the ash-fusion temperature. This means for impeding heat transfer preferably comprises at least one material having a thermal conductivity substantially lower than that of the fuel injector and, in a preferred embodiment, consists essentially of slag formed from noncombustible-mineral constituents of the fuel.
摘要翻译： 在燃烧区中，燃料喷射器浸入氧化剂和燃烧产物的混合物中，其温度为约2000华氏度或更高。 为了保持快速和稳定的燃烧，期望避免从该混合物过度吸收热能。 为此，本发明提供了用于阻止从相邻混合物传递到燃料喷射器的装置，使得紧邻燃料喷射器的混合物的部分可以保持在大约燃料的灰熔融温度的温度 或更高，同时燃料喷射器的内部保持在基本上低于灰熔融温度的温度。 这种用于阻止热传递的装置优选地包括至少一种具有基本上低于燃料喷射器的热导率的材料，并且在一个优选实施例中，该材料基本上由燃料的不可燃矿物成分形成的炉渣组成。
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公开(公告)号：US4685404A
公开(公告)日：1987-08-11
申请号：US788929
申请日：1985-10-18
摘要： There is provided a slagging coal combustion system suitable for retrofitting boilers, furnaces and industrial-process heat generators originally designed to burn oil or gas. It comprises a primary combustion chamber into which oxidizer and fuel are injected to provide high-velocity, rotational-flow combustion zones, such that the fuel is burned substoichiometrically, while in flight, with up to 90% of the resultant ash being removed as molten ash. The combustion products pass from the primary chamber to chamber where slag is removed and the gaseous products are passed to end-use equipment. A coal-fired precombustor subsystem feeds partially-heated air as the oxidizer to the primary combustion chamber supply of oxidizer, at any selected temperature within the range from about 1200.degree. F. to about 2000.degree. F. The stoichiometry of this precombustor and the velocity and mass-flow rates of its output stream are independently controllable.
摘要翻译： 提供了一种适合于改装最初设计用于燃烧油或气的锅炉，炉和工业过程热发生器的排渣煤燃烧系统。 它包括主燃烧室，氧化剂和燃料被注入到其中以提供高速旋转流动的燃烧区，使得燃料在飞行中以亚化学计量燃烧，其中高达90％的所得灰被熔化 灰。 燃烧产物从初级室传递到室，其中渣被去除并且气态产物被传递到最终用途设备。 一个燃煤预燃燃烧器子系统将部分加热的空气作为氧化剂进料到主燃烧室的氧化剂供应源，温度范围是从大约1200°F到大约2000°F。这种预燃燃烧器的化学计量和速度 其输出流的质量流量是独立可控的。
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公开(公告)号：US4412808A
公开(公告)日：1983-11-01
申请号：US160790
申请日：1980-06-19
CPC分类号： F23D17/002 , F23D11/12 , F23D14/20
摘要： The present invention resides in a dual fueled burner gun providing reduced production of oxides of nitrogen. The gun operates in a gaseous fueled mode when it is charged with a gaseous fuel or in a liquid fueled mode when it is charged with a liquid fuel. The gun may also operate in a gaseous/liquid fueled mode in which it is charged with both the gaseous and liquid fuels.
摘要翻译： 本发明在于提供减少氮氧化物生产的双燃料燃烧枪。 当气体燃料充满时，枪以气体燃料模式运行，当燃料充满液体燃料时，该喷枪以液体燃料模式运行。 枪还可以以气/液燃料模式操作，在该模式中，气体和液体燃料被充满。
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