13.4. COMPLETE-MIXING MODEL FOR GAS SEPARATION BY MEMBRANES

13.4A. Basic Equations Used

In Fig. 13.4-1, a detailed process flow diagram is shown for complete mixing. When a separator element is operated at a low recovery (i.e., where the permeate flow rate is a small fraction of the entering feed rate), there is a minimal change in composition. Then the results derived using the complete-mixing model provide reasonable estimates of permeate purity. This case was derived by Weller and Steiner (W4).

Figure 13.4-1. Process flow for complete mixing case.

Using nomenclature similar to that for distillation (P7), using the feed and nonpermeate flow ...

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