A cyclone furnace is a type of coal combustor commonly used in large industrial boilers.
Developed in the early 1942 by Babcock & Wilcox to take advantage of coal grades not suitable for pulverized coal combustion, cyclone furnaces feed coal in a spiral manner into a combustion chamber for maximum combustion efficiency.
During coal combustion in a furnace, volatile components burn without much difficulty. Fuel carbon “char” particles (heavier, less volatile coal constituents) require much higher temperatures and a continuing supply of oxygen. Cyclone furnaces are able to provide a thorough mixing of coal particles and air with sufficient turbulence to provide fresh air to surfaces of the coal particles.
Cyclone furnaces were originally designed to take advantage of four things
#Lower fuel preparation time and costs
#Smaller more compact furnaces
#Less fly ash and convective pass slagging
#Flexibility in fuel types
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