The interaction between separation system synthesis and process synthesis

Abstract The problem of selecting a separation system for a process cannot be uncoupled from the problem of determining the optimum process flow rates, since the optimum flows normally involve a trade-off between raw materials costs and recycle (which includes separations) costs. An efficient way of obtaining a first solution of the coupled problem is to use shortcut procedures to get into the neighborhood of the optimum design conditions and to eliminate undesirable alternatives. Some of the available shortcut procedures and design heuristics are reviewed.

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