Calculate the required molar flow rate of the air

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Reference no: EM1312073

Q1. Natural gas containing a mixture of methane, ethane, propane, and butane is burned in a furnace with excess air.

a. One hundred k mol of a gas containing 94.4 mole% methane, 3.40% ethane, 0.60% propane, and 0.50 percent butane is to be burned with 17% excess air. Calculate the required molar flow rate of the air.

b. Let

nt(kmol/h) = molar flow of the fuel gas

x1, x2, x3, X4, = mole fractions of methane, ethane,

propane, and butane, respectively, in the fuel

Pxs = percent excess air

na (kmol/h) = molar flow rate of the air fed to the furnace

Derive an expression for na in terms of the other variables. Check the formula with the results of part (a).

Reference no: EM1312073

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