Simulation of Cross-Current Extraction Processes
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Extraction processes dealing with partially miscible solvents are usually calculated by graphical methods to estimate the number of stages required, flow rates and compositions of the streams. Such procedures may be lengthy. Alternative calculation procedures are usually based on such simplifying assumptions as constant flow rates and linearization of the distribution relations. An algorithm for simulating multiple contact cross-current extraction processes has been developed. The algorithm is based on correlating liquid-liquid equilibrium data. No simplifying assumptions are introduced. Excellent agreement between the simulation results and that of the graphical methods has been obtained.