Multiple sets of reactions may be assigned to trays in the distillation column.Reactive distillation allows rigorous modeling of reactions when using the Chemical or Liquid-Liquid Column Algorithms. Sets of reactions, defined in the Reaction Data Sets Window, may be assigned to any stages in the column.
User subroutines or In-line procedures may be utilized in place of the built in reaction kinetics to solve for reaction rates. Calculator blocks may be used to supply various reaction parameters dynamically during flowsheet calculations by using the Define system.
Features
Major features of reactive distillation are summarized below.
Multiple sets of reactions may be assigned to trays in the distillation column.
Mixed simultaneous kinetic, conversion and equilibrium reactions, in the liquid and vapor phases, may occur on any tray(s).
The column may be configured with a single tray to serve as a two-phase reactor model.
Setting the bottoms product rate to zero in a Chemical column allows modeling a boiling pot reactor or a column situated on top of a boiling pot reactor.
A single nonvolatile component (often a catalyst) may be included in a boiling pot reactor model.
The effective reaction volume may be specified for any stages in the column.
The volume of one or more reactive stages in the column may be used as a specification variable
Homotopy Option is available for converging difficult specifications.
Reaction parameters can be manipulated parametrically by a Controller or Optimizer to match plant data.
Vapor phase components that polymerize may be marked for more rigorous modeling of their reactions.
Distillation Column Unit Operation - Technical Information
Liquid-Liquid Extraction Unit Operation - Technical Information