Producer gas is a fuel that is produced by burning biomass with an air deficit passed over red-hot coke (amorphous carbon). This gas is nothing but a mixture of gases such as hydrogen (H), carbon monoxide (CO), carbon dioxide (CO₂) and nitrogen (N₂).
The equation of producer gas is as follows -
CO₂ + 2N₂ (air) → CO + 2N₂
ΔH = -27.06 kcal
We know that,
1 Ton = 1000 kg
Mass of coke needed to form producer gas = 1.75 tons = 1750 kg
Given values,
Carbon monoxide (CO) = 25%
Carbon dioxide (CO₂) = 5%
Nitrogen (N₂) = 70%
One mole of carbon dioxide reacts with two moles of nitrogen to form one mole of carbon monoxide and nitrogen (producer gas).
We know that, 1 ton (1000 kg) of coke produces 470 Nm³ of producer gas, i.e.
470 × 4.359 = 2048.73 kg
1000 kg of coke produces = 2048.73 kg of producer gas
∴ 1 kg of coke produces = 2048.73 ÷ 1000 kg of producer gas
∴ 1750 kg of coke produces = 2048.73 × 1750 / 1000 = 3585.28 kg of producer gas.
Percentage yield = 87%
= 3585.28 × 87/100
= 3119.19 kg of producer gas
= 3.44 tons
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