The absorber-stripper configuration is common for gas plants. If we are to apply advanced process control (APC) systems on a gas plant, it better to address the control problem—maximizing recover..
The absorber-stripper configuration is common for gas plants. If we are to apply advanced process control (APC) systems on a gas plant, it better to address the control problem—maximizing recovery of propane or propylene (C3) while minimizing C2 at propane contamination limits. Absorber/strippers work like the rectifying and stripping sections of any distillation column, but the presence of lean-oil makes it more complex. The absorber preferentially absorbs and returns C3 to the stripper, whereas the stripper preferentially evaporates C2 in the absorber. However, it is impossible to absorb C3 without some C2, and likewise, it is impossible to boil C2 without evaporating some C3. That
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