During combustion of coal on grate, clinker formation is increased by the___________________?
Correct answer: D. All A., B. & C.
- A. Use of thick fire bed
- B. Low fusion point of ash (< 1100° C)
- C. Use of preheated primary air
- D. All A., B. & C.
Explanation
A thick fire bed, low ash-fusion temperature and preheated primary air all raise local bed temperature or increase the amount of ash that softens and sticks together. Hence each condition promotes clinker formation.
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