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Q2: A tanker carrying toluene is unloaded, using the ship's pumps, to an on-shore storage tank. The ship must unload 1080 tonne within 5 hours to avoid demurrage charges. The density of toluene is 874 kg/m. Estimate the pipeline diameter (from pump to an on- shore storage tank) using Rase method? [15 Marks) Q3: It is desired to produce 1000 kgh of hot vapor stream of benzene to feed a reactor for a certain petrochemical process. The benzene is available from an off-site storage facility at 1 atm pressure and ambient temperature (assume 25C), and the reactor requires the benzene to be at 250C at 10 atm. Two possible process alternatives are being considered to heat and pressurize the feed: (1) pump the liquid benzene to pressure and then vaporize it in a heat exchanger, and (2) vaporize the benzene first and then compress it to the desired pressure. Input Information: Cp of benzene is 2 kJ/kgC at temperature of 137.5 C, benzene density = 800 kg/m, pump and compressor efficiency = 0.75, y = 1.2, R = 8.314 kJ/kmol K, ignore the pressure drop due to friction and difference in elevations. Also ignore the increase in temperature due to compressing and pumping. Alternative 1: 21 Alternative 2: 1. Determine the cooling duty required for both alternatives? 2. Determine the work required for both alternatives? 3. Discuss qualitatively which scheme (if either) is better? [5 Marks) [10 Marks) (5 Marks Pump suction u= 0.028 + 0.1 Pump discharge u= 0.060 + 0.4 v=uA Q = m CP AT (where v is volumeteric flowrate) w=RT;27/67 - 1)/(Pout/Pin ) (7-1)/1 1]/ gaz + AP/P-AP1/P- W=0 Power = (W x m), for a pump Good Luck Eng. Amer