The Alphabutol advanced control package combines Axens' latest generation multivariable controller MVAC, with on line reactor models, in association with fractionation inferentials; it is designed to maximize the benefits from Alphabutol process, in an environment with complex, slow and non-linear multivariable interactions.
As process licensor, catalyst manufacturer and advanced control technology supplier, Axens combines all the necessary expertise for successful Alphabutol APC projects.
A 4 step control strategy
o Predictive control of Reactor Temperature. o Incondensable content control in Ethylene Recycle. Optimization of Ethylene purge o Butene-1 product purity control. Optimization of Recycle Column reboiler duty o Optimization of Butene 1 Column reboiler duty
Dimerization reactor model
The Alphabutol control package uses Axens' Dimerization reactor model to calculate on-line kinetic parameters, used for Reactor Temperature control.
Benefits
o Increased performance of reactor temperature control o Ethylene Recycle Purge minimization - 4 % o Reboiler Duty minimization (both columns) - 4 % o Consistent quality of Butene-1 product.
