Fluid sprinkling – spraying – and diffusing – Processes – Including mixing or combining with air – gas or steam
Patent
1994-10-31
1995-06-27
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Processes
Including mixing or combining with air, gas or steam
239404, 239590, 239591, F23C 110, F23C 700
Patent
active
054273145
ABSTRACT:
An apparatus and method for delivery of particulate fuel eliminates the problem of dense phase flow. The problem stems from the formation of undesirable streams of densely concentrated fuel particles, which streams have a deleterious effect on the combustion. In the distribution method and apparatus of the invention, the particulate fuel is induced to follow a different flow path from that of its transport air, as the fuel and transport air pass through the distribution device. The pattern and density of distribution of particulate fuel in the transport air then becomes controlled by the reentrainment of the fuel into the transport air rather than by flow characteristics of the fuel and transport air entering the nozzle. In the distribution device of the invention, the fuel particles are moved in a direction axially away from the furnace and into a space having a reflector wall against which the fuel particles impinge in a rebounding action. The reflector wall sprays the fuel particles into the path of the primary air in a wide dispersion pattern, which ensures good perimeter distribution.
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Vatsky, J. and Sweeney, T. W., Development of an Ultra-Low NO.sub.x Pulverized Coal Burner, Mar. 1991, Washington, D.C., pp. 1-17.
Attached Flame Low-No.sub.x Burners, (brochure) Burmeister & Wain Energi A/S.
Damper Design, Inc.
Kashnikow Andres
Weldon Kevin P.
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