In the production of sunflower oil, sunflower solid containing 13.5 wt% oil and 86.5 wt% solids...

In the production of sunflower oil, sunflower solid containing 13.5 wt% oil and 86.5 wt% solids
are ground and fed to the stirred tank, along with the recycled stream of liquid ethanol,
C2H5OH. The ground sunflowers are suspended in liquid for certain time to allow maximum
extraction of sunflower oil into the ethanol. The stirred tank effluent passes to a filter.
The filter cake contains 75.0 wt% sunflower solids and the balance sunflower oil and ethanol,
the latter two in the same ratio in which they emerge from the stirred tank. The filter cake is
discarded and the liquid filtrate is fed to a heated evaporator in which the ethanol is vaporized
and the oil remains as a liquid product. Subsequently, the ethanol vapor is cooled and
condensed, and the liquid ethanol condensate is recycled to the stirred tank.
By taking a feed ratio of 3 kg ethanol/kg sunflower, construct a complete block diagram with
label. Calculate flowrate and compositions at each stream. State clearly your assumptions
and basis of calculation.
An additional unit operation (heat exchanger) might be added to the process. With brief
explanation, suggest the most suitable location to install the unit. Write down your opinion
and conclusions on how the incorporation of this unit might or might not improve the process
economics.

(23marks)

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Expert Solution

Amanda K answered 3 weeks ago

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