A continuous guess of is required, however, a higher number of trials might be required if the first guess is very poor. Given: Drum pressure, Pd 250 kPa and drum temperature, Td 30 Calculate Ki from DePriester charts at P 250 and T 30 We find: K1 60 K2 1 K3 0 K4 0 Calculate from the equation: (1) Pick 0 as first guess 0(1 60) 0(1 1) 0(1 0) 0(1 0) 1 (60 1)(0) 1 (1 1)(0) 1 (0 1)(0) 1 (0 1)(0) We are looking for a value of for which 0 or close to zero. 1 DEPARTMENT OF CHEMICAL MATERIALS ENGINEERING ChE 316 Equilibrium Stage Processes Spring 2019 2 DEPARTMENT OF CHEMICAL MATERIALS ENGINEERING ChE 316 Equilibrium Stage Processes Spring 2019 Solutions: Solution of Q1. Is a single equilibrium stage sufficient to meet the requirement? Use the following equilibrium curve.
The spent should not contain more than 5 NH3.
The process is assumed to be isothermal at 1 atm. So that NH3 can be desorbed from the aqueous solution. In order to obtain this mixture 829 aqueous 13 NH3 solution is contacted with 499 of a 1 mixture. System 538 of a 10 mixture is required to produce nitrogen oxides. Table: Partial Pressure of Ammonia over Solutions at 20 NH3 Partial Pressure, kPa g 4 0 9 0 15 0 22 0 30 0 4. If 15 mole of gas of Y 0 are contacted with 20 mole of solution of X 0, what are the compositions of the resulting phases? The process is assumed to be isothermal at 1 atm. Using these data and neglecting the vapor pressure of water and the solubility of air in water, construct an equilibrium diagram at 101 kPa using mole ratios YA mol air and XA mole H2O as coordinates. System The partial pressure of ammonia (A) in mixtures in equilibrium with their aqueous solutions at 20 is given in the Table below.
What is the highest temperature at which the flash drum can operate (still have vapor and liquid chart for equilibrium data (Wankat, 3. Multicomponent Flash A feed that is 45 35 and 20 is fed at a rate of 1 to a flash drum operating at 200 kPa. the DePriester chart for equilibrium data, Figure from Wankat 60, 1, , 0) 2. F 150 Drum pressure 250 kPa, and drum temperature is C. Multicomponent Flash A feed that is 50 methane (1), 10 butane (2), 15 (3), and 25 nhexane (4) is flashed distilled. Preview text DEPARTMENT OF CHEMICAL MATERIALS ENGINEERING ChE 316 Equilibrium Stage Processes Spring 2019 Seminar 2 (May 22nd 2019) 1.
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