Where does the ignition zone lie in overfeed system?(a) Below the raw fuel undergoing distillation(b) Below the combustion zone(c) In between coke bed and flame zone(d) Between coke bed and green coal bedThis question was addressed to me during an interview for a job.This question is from Principle of Stoker topic in chapter Steam Power Plant of Energy Engineering

Where does the ignition zone lie in overfeed system?(a) Below the raw

1.	Where does the ignition zone lie in overfeed system?(a) Below the raw fuel undergoing distillation(b) Below the combustion zone(c) In between coke bed and flame zone(d) Between coke bed and green coal bedThis question was addressed to me during an interview for a job.This question is from Principle of Stoker topic in chapter Steam Power Plant of Energy Engineering
Answer» The correct OPTION is (a) Below the raw fuel undergoing distillation Explanation: The ignition zone lies directly below the raw fuel undergoing distillation. The GASES leaving the upper surface of the fuel BED CONTAIN combustible volatile matter formed from the raw fuel N2, CO2, O2, H2O and CO if the burning is incomplete.

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