Question: The feed to a rectifying column is (32.0 mathrm{~mol} % mathrm{n})-butane, (56.0 mathrm{~mol} % mathrm{n})-pentane, and (12.0 mathrm{~mol} % mathrm{n})-hexane. Feed rate is (100.0 mathrm{kmol}

The feed to a rectifying column is $32.0 \mathrm{~mol} \% \mathrm{n}$-butane, $56.0 \mathrm{~mol} \% \mathrm{n}$-pentane, and $12.0 \mathrm{~mol} \% \mathrm{n}$-hexane. Feed rate is $100.0 \mathrm{kmol} / \mathrm{h}$ and is a saturated vapor at 7.0 bar. The column operates at 7.0 bar, has a total condenser with a saturated liquid reflux, and CMO can be assumed valid. The distillate product is 99.3 $\mathrm{mol} \% \mathrm{n}$-butane and $\mathrm{D}=30.0 \mathrm{kmol} / \mathrm{h}$.

a. Find bottoms flow rate, reflux ratio L/D, and mole fractions of distillate and bottoms.

b. List your assumptions, if any.

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a To solve this problem we can use the equations derived earlier 1 First we need to find the mole fractions of the components in the distillate and bo... View full answer

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