Where is APC-Isom. used?

Oil RefiningOil Refining

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  • Oil Refining
  • Petrochemicals
  • Gases
  • Alternative Fuels
  • Water

APC - Isomerization

The isomerization advanced control package combines Axens' latest generation multivariable controller MVAC, with on line reactor models and optimizer, in association with inferentials; it is designed to maximize the benefits from isomerization process at the lowest operating cost. As a process licensor, catalyst manufacturer and advanced control technology supplier, Axens combines all the necessary expertise for successful isomerization APC projects.

A six-step control strategy is implemented

  • adjustment of hydrogen make-up for adequate H2/HC ratio at isomerization reactor inlett
  • control of isomerization reactor outlet temperatures at defined optimal targets
  • recycle composition control the recycle composition targets can be adjusted to maximize light isomerate octane_number, or volume_x_octane_number
  • minimization of stabilizer reboiler duty
  • DIH pressure minimization
  • DIH flooding control

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On-line optimization

Assuming on-line feed analyzer is available, the isomerization optimization module will use Axens' reactor models to calculate optimal targets for reactor outlet temperatures. These targets are controlled by MVAC.

Benefits

  • Mixed isomerate octane number increase
  • Reduction of hydrogen make up
  • Optimal use of catalyst
  • Minimization of energy consumption

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