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Process Control: Modeling, Design, and Simulation by B. Wayne Bequette

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15.6. Simulations

SIMULINK provides a nice modeling environment for simulating very simple process flow sheets. For rigorous process design and analysis, chemical process flow sheeting packages such as ASPEN PLUS and HYSYS should be used. Flow sheets can quickly be developed using standard “icons” that represent unit operations, such as reactors and separators. This next example illustrates the use of SIMULINK to solve a flow sheet similar to Example 15.1.

Table 15-1. H2 Make-up and Vapor Recycle as a Function of H2 Fraction in Purge Stream
H2 purge frac, y7,HToluene conv., XTH2 make-up, n2Recycle, n8
0.30.71.51518.96
0.40.71.78613.57
0.50.72.17410.11
0.60.72.7787.46

Example 15.6: A Simple Recycle System

Here we consider a slightly different steady ...

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