A fast algorithm for three-phase distillation towers: Ein schneller algorithmus zur berechnung des konzentrationsverlaufs in dreiphasen-destillationskollonnen |
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| Affiliation: | 1. Faculty for Science and Natural Resources, Universiti Malaysia Sabah, 88400 Kota Kinabalu, Sabah, Malaysia;2. Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang, 26300 Gambang, Kuantan, Malaysia;1. Nuclear Fuel Technology, Nuclear Fuel Management, Hot Laboratories Center, Egyptian Atomic Energy Authority, P.O. 13759, Cairo, Egypt;2. Nuclear Chemistry Department, Radioisotopes Production and Radiation Sources Division, Hot Laboratories Centre, Egyptian Atomic Energy Authority, P.O. 13759, Cairo, Egypt;3. Analytical Chemistry Department, Waste Management Division, Hot Laboratories Centre, Egyptian Atomic Energy Authority, P.O. 13759, Cairo, Egypt |
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| Abstract: | A distillation tower algorithm which accounts for two liquid phases on some trays is presented. The major assumptions being made are constant molal overflow, uniform pressure across the tower, ideality of the vapour phase and 100% tray efficiencies. A simplified inside—-out technique is used to achieve convergence to the steady-state solution. In an inner loop vapour and average liquid compositions are calculated. In the outer loop an efficient phase-splitting algorithm developed by the authors is used where necessary to calculate estimates of the liquid-liquid equilibrium compositions. In this outer loop volatility parameters are also updated.Simulation results for example problem 2 by Block and Hegner compare well with those reported by these authors. |
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