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(Solved): 1. In an ammonia-air mixture at 20kmol/h, calculate the number of theoretical stages (by graph and ...
1. In an ammonia-air mixture at , calculate the number of theoretical stages (by graph and by equation) that will decrease the amount of ammonia from to using pure liquid water at and 303.15 . 2. In a multi-stage absorber, find the number of theoretical stages (by graph and by equation) when an inlet air containing acetone at by mole is mixed with water at to absorb of the acetone. The process is to operate isothermally at and a total pressure of 101.3 kPa. 3. The humidity of an air stream is dry air at . This air stream is cooled and humidified to saturation. What are the final values of and T? For saturation, what will be the values of and ? Find the latent heat at saturation and humid heat.
Expert Answer
o calculate the number of theoretical stages in each of the given scenarios, we can use the McCabe-Thiele graphical method and the Lewis-Whitman equation. Let's go through each problem step by step:Ammonia-Air Absorption: We'll use the McCabe-Thiele graphical method to determine the number of theoretical stages required to decrease the amount of ammonia from 6% to 2% using pure liquid water.Given:Ammonia-air flow rate: Inlet ammonia concentration: 6%Outlet ammonia concentration: 2%Water flow rate: Water conditions: 101.325 kPa, 303.15 KUsing the McCabe-Thiele method:Draw the equilibrium curve based on the given conditions.Draw the operating line with a slope equal to the ratio of the water and air flow rates (L/V ratio).Count the number of stages required to intersect the operating line at the desired ammonia concentration.