Question

What is the main aim of Automatic control combustion in pulverized fuel firing?

(a) To regulate the powder coal

(b) To draw in air required for combustion

(c) To maintain constant steam pressure

(d) To draw out the ash formed

I had been asked this question by my school principal while I was bunking the class.

Asked question is from Pulverised Fuel Burning in portion Steam Power Plant of Energy Engineering

Answer 1

Correct answer is (c) To maintain constant steam pressure

To elaborate: Automatic control combustion applied to pulverized fuel fired boilers is effective in maintaining an almost constant steam pressure under wide load variations. It also gives fast response to load changes as rate of combustion can be controlled easily and immediately.