The advantages of firing pulverised coal in the furnace lies in the fact that, it_____________________?
Correct answer: C. Accelerates the burning rate and economises on fuel consumption
- A. Permits the use of high ash content coal
- B. Permits the use of low fusion point ash coal
- C. Accelerates the burning rate and economises on fuel consumption
- D. All A., B. and C.
Explanation
Pulverising coal greatly increases its surface area, so combustion is faster and more complete, reducing fuel consumption. Low-fusion-point ash is undesirable because it can cause slagging, so the stated combined advantages do not all apply.
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