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assignment help 9825

assignment help 9825.

Question 1

A double effect evaporator in a plant is used to remove water of an aqueous salt (NaCl and H2O) fresh feed solution from 50.0 wt% water to 5.0 wt% water as shown in the Diagram 1 below. The evaporator unit is designed to process 6000.0 metric ton of the aqueous salt fresh feed solution yearly. Assume the plant is operating 250 days yearly and 10 hours daily. After exiting the second evaporator, the aqueous salt solution entered a splitter, where half of the solution was recycled to the stream and the remainder removed from the system.

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i.           Redraw and label Diagram 1 completely with the known and unknown variables.

ii.         Calculate the feed rate (in kg/hr) of the aqueous salt fresh feed solution.

iii.        Solve the total mass flow rate (in kg/hr) of the aqueous salt solution exiting the evaporator number 2.

iv.        Determine the amount of water (in kg/hr) removed from the aqueous salt solution in Evaporator 1 and Evaporator 2

assignment help 9825

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