公开(公告)号：US4660478A

公开(公告)日：1987-04-28

申请号：US670416

申请日：1984-11-13

申请人： Douglas B. Sheppard ,  Albert Solbes ,  Gabriel D. Roy

发明人： Douglas B. Sheppard ,  Albert Solbes ,  Gabriel D. Roy

IPC分类号： F23D1/02 ,  F23C3/00

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。

公开(公告)号：US4785746A

公开(公告)日：1988-11-22

申请号：US891975

申请日：1986-08-01

申请人： Gabriel D. Roy ,  Douglas B. Sheppard

发明人： Gabriel D. Roy ,  Douglas B. Sheppard

IPC分类号： B05B7/04 ,  F23C3/00 ,  F23C6/00 ,  F23D1/00

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。