Pulverized coal is burned in which form?

• A. Fluidized Bed
• B. Gas Flame
• C. Suspension
• D. Pellet Stove

Answer: (C)

Pulverized coal is ground into very fine particles and blown with air to form a cloud inside the furnace. This cloud of coal dust dispersed in the combustion air is called a suspension. The tiny particles have a large surface area, which allows rapid, uniform combustion and a stable, controllable flame ideal for large boilers. Other methods use different fuel forms—fluidized beds keep fuel in a bed that behaves like a fluid, gas flames use gas instead of solid coal, and pellet stoves burn wood pellets—not pulverized coal. So, the burning form for pulverized coal is a suspension.