$3$B$).$ In a continuous solvent extraction process, $100k\frac{g}{h}$ of raw cotton seeds $($stream $1)$ containing $15wt\%$

cellulose, $35wt\%$ meal and $50wt\%$ oil is fed to an extractor $-$ separator column. Hexane $($stream $2)$ is

used to selectively extract the oil from the cotton seeds where $3kg$ Hexane is used per $1kg$ raw cotton

seed. The oil extraction and product $/$ by$-$product separation process is shown in the flow diagram

below $($Figure $3$B$).$

I. Perform overall mass balance and components mass balances.

II$.$ Calculate the mass flowrate of the oil $-$ hexane extract E $($stream $5)$

III. Calculate the composition $($mass fractions$)$ of the oil $-$ hexane extract E $($stream $5)$

IV$.$ Calculate the mass flow rates protein meal $($stream $3)$ and the cellulose material $($stream $4).$

Raw seeds $(100$

$15wt\%$ Cellulos

$35$ wt$\%$ Meal

$50$ wt$\%$ Oil

Pure protein $n$