Etbe Control

The two fresh feedstreams to the column are ethanol and a C4 stream containing reactive isobutene and nonreactive n-butene. The bottoms is mostly ETBE. The distillate is

Figure 15.13 Steady-state conditions for ETBE.

Figure 15.13 Steady-state conditions for ETBE.

mostly n-butene. Figure 15.13 shows the flowsheet with steady-state conditions. Figures 15.14 and 15.15 give composition and temperature profiles, respectively.

Two alternative control structures are evaluated. They differ only in which fresh feed-stream is selected to set the production rate. In the first, the C4 stream is flow controlled. In the second, the ethanol feedstream is flow controlled.

Was this article helpful?

0 0

Post a comment