Consider the benzene purification column, T-101, in Figure 1.5 for the toluene hydrodealkylation process. The column feed

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Consider the benzene purification column, T-101, in Figure 1.5 for the toluene hydrodealkylation process. The column feed contains noncondensables, mainly methane and a small amount of hydrogen, that must be vented from the system. The vent is taken off the top of the reflux drum, V-104. Sketch a control system in which the valve on this vent line is used to control the pressure of the column. Explain what happens when

1. The column pressure begins to drop

2. The amount of noncondensables fed to the column suddenly increases

Figure 1.5

V-101 Toluene Feed Drum Toluene KEY Temperature (C) Pressure (bar) Mass Flow (1000 kg/h) Hydrogen 3 10.0 25

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Analysis Synthesis And Design Of Chemical Processes

ISBN: 9780134177403

5th Edition

Authors: Richard Turton, Joseph Shaeiwitz, Debangsu Bhattacharyya, Wallace Whiting

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