A high grade semi-anthracite coal has a complete analysis of 85.86% C, 4.44% H, 2.7% O,...

A high grade semi-anthracite coal has a complete analysis of 85.86% C, 4.44% H, 2.7% O, 1.2% N, 5% ash and 0.8% S. Analysis of the Residue shows 58% C and 42% ash. Air is
supplied dry at 30°C and 750mmHg. Partial orsat analysis of the stack gas (400°C, 755mmHg) shows 8.05% CO2, 2.42% CO and 2.9%H2.Assume the S and N gasified burns to SO2 and NO respectively. Calculate
a. % excess O2
b. Complete orsat analysis of stack gas
c. m3 stack gas/ m3 air

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