A laboratory stripping column containing three physical stages is being operated to remove a solute from the liquid stream. The entering liquid stream contains 8.25 mol % solute, while the entering stripping gas stream is devoid of the solute. The flow rate of the liquid is 100 mol/s, while that of the gas is 1000 mol/s. The column is operating at 80% of the flooding velocity and is designed to withstand 5 bar pressure. The column is operated at atmospheric pressure and 25C. The operation can be assumed to be isothermal, and the trays can be assumed to be 100% efficient. The equilibrium diagram (equation given by Y=X?] in solute mole ratios is provided to you. Questions 1. In the lectures, we have discussed design problems and simulation problems. Which category does this problem fall under? Provide a brief justification. [2 MARKS] 2. By showing appropriate steps/plots, calculate the mole fraction of the solute in the outlet liquid and outlet gas streams. The solution might require trial and error. If you are using a tool like excel/Matlab, attach a screenshot of the code/spreadsheet. Explain how you arrived at the solution. (10 MARKS] 3. For question 2, provide the equation of the operating line [2 MARKS] 4. Using the column, the operator expects to achieve a liquid phase solute composition of 3 mol % at the exit of the column. Will the current operation provide this? If it is not possible to achieve this target, suggest what the operator can do with the existing column to meet the target. You can assume that there is capacity to either increase or decrease the gas flow rates and some capacity to heat or cool the liquid and the gas. Before implementation, what checks need to be performed? Provide thoughtful suggestions. [6 MARKS] 0.010 0.009 0.008 0.007 0.006 Mole ratio of solute in gas (Y) 0.005 0.004 0.003 0.002 0.001 0.000 0.00 0.02 0.10 0.04 0.06 0.08 Mole ratio of solute in liquid (X) A laboratory stripping column containing three physical stages is being operated to remove a solute from the liquid stream. The entering liquid stream contains 8.25 mol % solute, while the entering stripping gas stream is devoid of the solute. The flow rate of the liquid is 100 mol/s, while that of the gas is 1000 mol/s. The column is operating at 80% of the flooding velocity and is designed to withstand 5 bar pressure. The column is operated at atmospheric pressure and 25C. The operation can be assumed to be isothermal, and the trays can be assumed to be 100% efficient. The equilibrium diagram (equation given by Y=X?] in solute mole ratios is provided to you. Questions 1. In the lectures, we have discussed design problems and simulation problems. Which category does this problem fall under? Provide a brief justification. [2 MARKS] 2. By showing appropriate steps/plots, calculate the mole fraction of the solute in the outlet liquid and outlet gas streams. The solution might require trial and error. If you are using a tool like excel/Matlab, attach a screenshot of the code/spreadsheet. Explain how you arrived at the solution. (10 MARKS] 3. For question 2, provide the equation of the operating line [2 MARKS] 4. Using the column, the operator expects to achieve a liquid phase solute composition of 3 mol % at the exit of the column. Will the current operation provide this? If it is not possible to achieve this target, suggest what the operator can do with the existing column to meet the target. You can assume that there is capacity to either increase or decrease the gas flow rates and some capacity to heat or cool the liquid and the gas. Before implementation, what checks need to be performed? Provide thoughtful suggestions. [6 MARKS] 0.010 0.009 0.008 0.007 0.006 Mole ratio of solute in gas (Y) 0.005 0.004 0.003 0.002 0.001 0.000 0.00 0.02 0.10 0.04 0.06 0.08 Mole ratio of solute in liquid (X)