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Table 2 Specifications of the two-column and three-column distillation setup in the ASPEN Plus® simulation

From: Simulation of the downstream processing in the ethanol production from lignocellulosic biomass with ASPEN Plus® and IPSEpro

  Two-column Three-column
Beer/stripper column 1   
  Operational pressure 2.03 bar 3 bar
  Number of stages (actual) 32 25
  Column efficiency 48% 50%*
  Reflux ratio 3 2.3
Beer/stripper column 2   
  Operational pressure - 1.25 bar
  Number of stages (actual) - 25
  Column efficiency - 50%*
  Reflux ratio - 1.4
Rectification column   
  Operational pressure 2.03 bar 0.3 bar
  Number of stages (actual) 60 45
  Column efficiency 57% 75%*
  Reflux ratio 3.2 2.1
  1. * Murphree efficiency.