Question: 2. Diethyl ether ( SG=0.71, viscosity: 0.224cp ), which is the product from a distillation process, is being condensed in a tank shown in the

2. Diethyl ether ( SG=0.71, viscosity: 0.224cp ), which is the

2. Diethyl ether ( SG=0.71, viscosity: 0.224cp ), which is the product from a distillation process, is being condensed in a tank shown in the figure and pumped away as liquid. The total pressure in the condenser is equal to the vapor pressure of diethyl ether which is 450mmHg. Flow rate of the diethyl ether is 120kg/min. Losses in the pipe between the condenser and the pump can be estimated as 15J/kg. (a) If the net positive suction head of the pump is 3m of liquid, what must be the least height of the liquid level in the condenser above the pump inlet? (b) Diethyl ether is going to be sent to a reactor which is operated at 0.5atm gauge pressure and constructed on ground level. The pipe used is 11/2mSch40 galvanized iron. The total friction losses of discharge stream can be taken as 950j/kg. There is a spare pump in the plant that has a power of 2kW with and efficiency of 70%. Regarding the height calculated in part (a), would this pump compensate the duty to transport diethyl ether from condenser to reactor? Discuss your results

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