Problem $2(19$ points$)$

Read the Experimental section of the artached paper $($Pressurized lliquid extroction of rodlish seed

oll using ethanal os solvent $()|)$ in which essential olls are obtained via solvent eatraction.

a$)(4$ points$)$ Greate a block fow diagram for this process following the process described in

the manuscript $($section $2\mathrm{.}31.$ Oll extraction$).$ Be sure to list major conditions and identify

materiat flows Be sure to indicate what stream has your essential oll.

b$)($A points$)$ Identify in your block flow diagram what steps are reaction, and which are

separation$/$purification$.$

c$)14$ points$)$ Maximum oil vieid of $30\%$ was obtained at $120C$ and $10$MPa with ecthanol

flow of $1mtmi{n}^{-1}$ after $100$min Note that ofl vield is "expressed on a dry basis and

calculated as the ratio between the oil mass obtained and the mass of seeds added to the

extractor "Galculate how much ethanol and radish seeds are required to produce $1$ ton

of essential oil per day

d$)(4$ points$)$ Describe how you can compute the heat and work required for this process Be

sure to ist what information you require to complete this calculation.

e$)(3$ points$)$ Discuss does the paper provide enough information to simulate this process

using a process simulator software like ASPEN ${?}^{**}?$ If not, what additional information do

you require?

Process

PLE $=$ are $5\mathrm{.}25?$ of seeds added to Extract

oven heated to $(120,135$ or $\{$:$150$Celcius$)$

Reactor filled with ethanol till workins

pressure neaches $(5,10$ or $15$MPa

Exprector placed in oven to start

static extraction time $(10$ or $30$nin.

Aftir wime prases extraction stanted with

ethand flow rate kept cons fant or

$4m{L}^{-1}mi{n}^{-1}$ during pro$-$esta $6$ lished timy

After extracts collected ethanal removed

by evaporation in oren with air

circulation