Question

Which type of firing technique is employed for pulverised coal?

(a) Oxidation firing

(b) Reduction firing

(c) Front wall firing

(d) Raku firing

This question was posed to me in final exam.

I would like to ask this question from Pulverised Coal topic in section Fuels and Combustion of Engineering Chemistry II

Answer 1

Correct choice is (c) Front wall firing

For explanation I would say: The pulverised coal is burnt along the front side of the burner. It can be done in more three ways, i.e. side wall firing, U-flame firing and corner firing respectively. U-flame firing is not used so much as it produces a very long flame.