Draw and label the given streams and derive expressions for the indicated quantities in terms of labeled variables. 1. The feed to an ammonia synthesis reactor contains 25 mole% nitrogen and the balance  hydrogen. The flow rate of the stream is 3000 kg/h. Calculate the rate of flow of nitrogen into  the reactor in kg/h.

Problem 2: Liquid-liquid extraction A liquid feed stream of 1500 kg/h consisting of 35 wt. % acetonitrile (1) and 65% water (2) is to be extracted using isobutyl methyl ketone (3) as the solvent. If the flow rate of the solvent is 500 kg/h, determine the flow rates and compositions of the exit streams using the phase diagram (mass fractions) below. The overall process takes place at a constant temperature of 303 K. Acetonitrile OA 1 Extract Phase 0.2 0.8 0.4 0.6 F 0.6 E 0.4 F M 0.8 0.2 Raffinate Phase Isobutyl 1 methyl ketone 0.2 0.4 0.6 0.8 1° Water Settler,

A stream containing propionic acid and water at 70:30 mass ratio is fed to a mixer at 3.181 kg/s with pure cyclohexane as solvent. What should be the flow rate of the solvent in order to attain 30:70 mass ratio of solute and solvent in the extract (solvent-rich) stream? Prepare graphical and computational solution. Propionic acid 0.0 1.0 0.1 0.9 0.2 0.8 0.3 0.7 +1 0.4 + ++ 0.6 0.5 0.5 0.6 0.4 0.7 0.3 0.8 0.2 0.9 0.1 1.0 0.0 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Cyclohexane Water

A feed of a distillation column contains 40 mol% of n-pentane and 60 mol% of n-hexane will be separated to recover 92 mol% of n-pentane as distillate at the column condition of 1 atm. The column receives a saturated liquid feed with a flow rate of 1,200 kmol/h. A total condenser is used and reflux is a saturated liquid. Bottoms from the column contains 94 mol% of n-hexane from the feed. The carbon steel column is equipped with carbon steel sieve trays which have efficiency of 43%. Determine the design specifications of the distillation column using the appropriate heuristics. Hint: You need to find densities for vapour of distillate by using the chemical engineering principles that you have learnt. Use data in Table 2 and equation below to determine relative volatility of component.