Question

12.Coal fired in a furnace analyzes 16.6% VCM, 16% ash, 61.4% FC, 6% Moisture, 1.2% N and 1.8% S with a calorific value of 26.75 MJ/kg. Analysis of the Residue shows 44% ash, 8% VCM, 34% FC and 14% H2O. Partial orsat analysis of the stack gas shows 10.77% CO2, 1.62% CO and 0.81% H2. Air supplied is at 27℃, 765 torrs with 80% RH.

Calculate: a) %C and %VCM lost in the Residue;

b) % excess O2;

c) m3 air/kg coal

d) Orsat analysis of the stack gas.

Answer 1

Solution :

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