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Which air is supplied separately to ensure complete combustion in pulverized fuel firing system?

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Which air is supplied separately to ensure complete combustion in pulverized fuel firing system?

(a) Primary air

(b) Turbulence air

(c) Secondary air

(d) Blower air

The question was posed to me in an online quiz.

Origin of the question is Pulverised Fuel Burning in portion Steam Power Plant of Energy Engineering

1 Answer

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Best answer
Correct answer is (c) Secondary air

The explanation is: The amount of secondary air required to complete the combustion is blown separately and resulting turbulence in the high pressure combustion chamber helps in through mixing of fuel and air. For better combustion result this type of mixing is done.

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