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.
Six-step control strategy
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
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
adjustment of hydrogen make-up for adequate H2/HC ratio at isomerization reactor inlett
