Flow rate Calculations

To find the flow rates

((100,000 tonne C_9 H_12)/year)×((1,000 kg)/(1 tonne))×((1 mol)/(.12019 kg))×((1 year)/(365 days))×((1 day)/(24 hours))=94.98kmol⁄h of cumene produced

n ̇_1=n ̇_3+((94.98 kmol C_9 H_12)/h)×((1 mol C_9 H_12)/(〖1 mol C〗_3 H_6 ))

n ̇_3=.1n ̇_1

n ̇_1=.1n ̇_1+94.98 kmol⁄h C_3 H_6

n ̇_1=105.5 kmol⁄h

n ̇_3=10.5 kmol⁄h

 

For a ration of fresh feed to recycle feed of 1:3

n ̇_2=((94.98 kmol C_9 H_12)/h)×((1 mol C_9 H_12)/(〖1 mol C〗_6 H_6 ))×((〖4 mol C〗_6 H_6 fed)/(〖1 mol C〗_6 H_6 fresh feed))

n ̇_2=379.9 kmol⁄h