QUE (a) What is gas stripping and what conditions favour it? 2 Marks (b) Propane must...

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QUE (a) What is gas stripping and what conditions favour it? 2 Marks (b) Propane must be stripped from an oil stream in a stripping column by using pure steam. The pure oil stream (without Propane) has a flow-rate of 150kmol/h and is loaded with 2.5 mol% Propane. The column is set at the temperature of 350 K and pressure of 1.2 atm. The minimum propane amount to be separated is 90%. (i) In order to determine the flow of the gas stream, some assumptions are used. What are the assumptions Calculate the minimum amount of the gas stream required to carry out the stripping Determine the number of stages for the gas stream 1.7 times minimum by the two methods namely the Kremser equation and Mc Cabe Thiele method and exit gas composition. The Antoine equation below for propane equilibrium data is 3 Marks (ii) 1 Marks (ii) 1872.46 Inp' (mm Hg) =15.726– T(K)-25.16 4 Marks QUE (a) What is gas stripping and what conditions favour it? 2 Marks (b) Propane must be stripped from an oil stream in a stripping column by using pure steam. The pure oil stream (without Propane) has a flow-rate of 150kmol/h and is loaded with 2.5 mol% Propane. The column is set at the temperature of 350 K and pressure of 1.2 atm. The minimum propane amount to be separated is 90%. (i) In order to determine the flow of the gas stream, some assumptions are used. What are the assumptions Calculate the minimum amount of the gas stream required to carry out the stripping Determine the number of stages for the gas stream 1.7 times minimum by the two methods namely the Kremser equation and Mc Cabe Thiele method and exit gas composition. The Antoine equation below for propane equilibrium data is 3 Marks (ii) 1 Marks (ii) 1872.46 Inp' (mm Hg) =15.726– T(K)-25.16 4 Marks

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Assumptions used pure steam and oil are immiscible ... View the full answer