Which is the zone where the water vapors carried in air reacts with carbon in over-feed system?(a) Green coal bed zone(b) Incandescent zone(c) Combustion zone(d) At the ash pitI have been asked this question during a job interview.Origin of the question is Principle of Stoker topic in section Steam Power Plant of Energy Engineering

Which is the zone where the water vapors carried in air reacts with ca

1.	Which is the zone where the water vapors carried in air reacts with carbon in over-feed system?(a) Green coal bed zone(b) Incandescent zone(c) Combustion zone(d) At the ash pitI have been asked this question during a job interview.Origin of the question is Principle of Stoker topic in section Steam Power Plant of Energy Engineering
Answer» The correct option is (B) Incandescent zone For explanation I would say: The water vapor carried with air reacts with Carbon in incandescent zone and FORMS CO, CO2, and H2. Part of CO2 formed reacts with air C passing through incandescent zone and converts into CO. The gases leaving the incandescent region of FUEL bed consist of N2, CO2, CO, H2 and H2O.

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