1. problem) A continuous fractionated distillation column with a flow rate of 30,000 kg/h for 45% benzeneand 55% toluene, 97% benzene in the upper product and 98% benzene in the lower product by weight. and 55% toluene, 97% benzene in the upper product and 98% benzene in the lower product by weight. will be designed to separate it to contain toluene. Recovery (reflux) rate, 1 mole of product 3.3 for benzene and toluene. Benzene and toluene have a relative volatility value of 2.3. constitutes the ideal system. Molal latent heat values for benzene and toluene are 7360 and 7960 cal/gmol. The molecular weights for benzene and toluene are 78 and 92, respectively. g/mol. The feed has a boiling point of 95C at 1 atm pressure.

a) Calculate the upper and lower product quantities in mol/hr.

b) Calculate the ideal number of stages and feed stage for the following three different cases Determine

i) Liquid at feed boiling point

ii) Feed liquid at 20C (specific heat 0.44 cal/gC)

iii) A mixture containing two-thirds liquid and one-third vapor in the feed

c) 20 lbf/in2 for heating (If steam with a gauge pressure of 1.36 atm is used, heat losses neglecting and assuming that the recovery (reflux) is a saturated fluid, the above How much steam is required per hour for each of the three cases?

d) If cooling water enters the condenser at 30C and leaves at 45C, how many cubic meters per hour is cooling water needed?