The exit stream of a beer fermentation system (F) contains ethanol, water and fermentation solids and...

The exit stream of a beer fermentation system (F) contains ethanol, water and fermentation solids and has a mass flow of 1200 ton/day. This stream is fed to a separator from which has to outlets: a stream of 300 ton/day of solids (S) and a stream (A) that is fed to a distillation column. From the top of the column, a flow of 750 ton/day of beer containing 12.5% ethanol and the balance of water is released; the bottom flow contains water with 1% of solids. The beer contains 96% of the ethanol fed to the process.

a) Draw a process diagram.

b) What is the composition of stream F, in mass percentages?

c) Find the mass flow in kg/h and composition the stream (A) entering the distillation column.

Solutions

Expert Solution

in terms of kg/hr the composition of atream a is (converting ton/day into kg/hr we use relation 1ton =10^3 kg and 1 day=24hr)

ethanol=4068.75kg/hr

water=33368.7378kg/hr

solids=62.5kg/hr

Amanda K answered 1 year ago

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