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APC - Crude

APC uses a model-based predictive control technology that drives the process towards the desired targets through the manipulation of several variables simultaneously while observing all process constraints. APC has a proven track record in delivering business objectives: reducing energy costs, increasing yields and improving operability.

As a process licensor and catalyst supplier, Axens Horizon is well positioned to offer models and first-hand knowledge of the best strategies for APC projects.

Our Control Strategy for Crude Distillation consists of:

  • Estimation of feed True Boiling Point (TBP) curve, using heat and mass balances
  • Side stream cutpoint calculation, with estimated TBP
  • Product quality estimation, using cutpoint and internal reflux
  • Product draws, pumparounds (P.A.), furnace and top temperature adjustment, to maximize higher value, on-specification products, even during crude switch.
  • P.A. adjustment, for adequate heat removal, maximum heat recovery and desired product separation, subject to loading constraints.
  • Feed maximization, subject to furnace and tower constraints (flooding,…), even during crude switch
  • Pressure minimization

Documentation Center

APC - CDU - Commercial Bulletin cadenas