Mass Transfer Mass Transfer

Table. Operating conditions of a flash drum:

25 n-propanol, np wt%

75 Isopropanol, ip wt%

F: 233 kgmole/hr

T: 86 C

P: 101. 325 kpa

Problem 3. A flash drum is separating a feed consisting of np wt% n-propanol and ip wt% isopropanol with F kg-moles/hr at TC and PkPa. Use the Rachford-Rice equation shown below to find V/F. V. Land then find x and y. Do not use the Newtonian convergence method (Newton's Rule). Determine K values from Raoult's law using Antoine equation for vapor pressure. (K-1)2 v=0 1:1 +(K-1) The Antoine constants are: n-propanol: A-7.84767, B-1499 2. C-204.64 isopropanol: A-8.11778, B-1580.9. C-219.61 Where the form of the Antoine equation is LogicVp) - A-B/T +C) VP in mm Hg and T in C. Source: J.A. Dean (Ed.). Lange's Handbook of Chemistry, 13th ed., McGraw-Hill, NY, 1985, pp. 10-2811. Table. Operating conditions of a flash drum Problem 3. A flash drum is separating a feed consisting of np wt% n-propanol and ip wt% isopropanol with F kg-moles/hr at TC and PkPa. Use the Rachford-Rice equation shown below to find V/F. V. Land then find x and y. Do not use the Newtonian convergence method (Newton's Rule). Determine K values from Raoult's law using Antoine equation for vapor pressure. (K-1)2 v=0 1:1 +(K-1) The Antoine constants are: n-propanol: A-7.84767, B-1499 2. C-204.64 isopropanol: A-8.11778, B-1580.9. C-219.61 Where the form of the Antoine equation is LogicVp) - A-B/T +C) VP in mm Hg and T in C. Source: J.A. Dean (Ed.). Lange's Handbook of Chemistry, 13th ed., McGraw-Hill, NY, 1985, pp. 10-2811. Table. Operating conditions of a flash drum