Question

Why on some boilers the draft system controls have to be positioned abnormally in soot blowers?

(a) To avoid the soot being blown back into boiler

(b) To get a good grip for blowing out the soot from the boiler

(c) due to lack of space in the boiler

(d) To avoid the heat of boiler affecting the soot blowers

I had been asked this question in unit test.

This question is from Soot Blowers in portion Steam Power Plant of Energy Engineering

Answer 1

The correct answer is (a) To avoid the soot being blown back into boiler

The best explanation: On some boilers the automatic draft system controls have to be positioned for abnormally high draft before beginning the soot blowing operation; otherwise the release of stem into the setting may blow soot and smoke into the boiler room.