Q4. In underground coal combustion in the gas phase several reactions ta place including: Co + ½02 → CO2 H2 + ½02 → H20 CH, + 202 → CO2 + 2H20 If a gas phase composed of the following molar composition: CO2: 15.22%; C 13.54%; H2: 15.01%; CHa: 3.2%; and the balance N2, the gas is burned with 40 excess air. On the basis of 100 mol of aas calculate the amount of gir need

Chemistry: The Molecular Science
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Chapter10: Fuels, Organic Chemicals, And Polymers
Section10.2: U. S/ Energy Sources And Consumption
Problem 10.4E
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Q4. In underground coal combustion in the gas phase several reactions take
place including:
CO + ½02 → CO2
H2 + ½02 → H20
CH, + 202 → CO2 + 2H2O
If a gas phase composed of the following molar composition: CO2: 15.22%; CO:
13.54%; H2: 15.01%; CH4: 3.2%; and the balance N2, the gas is burned with 40%
excess air.
1. On the basis of 100 mol of gas, calculate the amount of air needed per
100 moles of the gas.
2. What will be the analysis of the product gas on a wet basis?
3. If 70% of the methane burnt in the third reaction was converted to CO2
and the remaining to CO, how would it affect the feed rate of air
assuming 40% excess air.
Note: Use atomic balance.
Transcribed Image Text:Q4. In underground coal combustion in the gas phase several reactions take place including: CO + ½02 → CO2 H2 + ½02 → H20 CH, + 202 → CO2 + 2H2O If a gas phase composed of the following molar composition: CO2: 15.22%; CO: 13.54%; H2: 15.01%; CH4: 3.2%; and the balance N2, the gas is burned with 40% excess air. 1. On the basis of 100 mol of gas, calculate the amount of air needed per 100 moles of the gas. 2. What will be the analysis of the product gas on a wet basis? 3. If 70% of the methane burnt in the third reaction was converted to CO2 and the remaining to CO, how would it affect the feed rate of air assuming 40% excess air. Note: Use atomic balance.
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