A two-step distillation and mixing process is shown in the figure. The system operates at steady-state conditions and there are no chemical reactions. The known flow rates and compositions are shown in the table.
(a) Develop the equations to calculate the unknown flow rates and compositions.
(b) Solve for the unknowns.
Stream
Mass Flow (kg/h)
Composition, mass%
A
B
1
Feed
100
50.0
2
Distillate
90.0
10.0
3
Concentrate
4
Diluent
30.0
70.0
5
Product
90
26.0